Download MD-P1 and MD-P1D Model Power Meters User Guide

MD-P1 and MD-P1D Model
Power Meters
User Guide
125-201
2014-09-19
Building Technologies
125-201, Rev AA
Copyright Notice
Copyright Notice
Notice
Document information is subject to change without notice by Siemens Industry, Inc.
Companies, names, and various data used in examples are fictitious unless otherwise
noted. No part of this document may be reproduced or transmitted in any form or by
any means, electronic or mechanical, for any purpose, without the express written
permission of Siemens Industry, Inc.
All software described in this document is furnished under a license agreement and
may be used or copied only in accordance with license terms.
For further information, contact your nearest Siemens Industry, Inc. representative.
Copyright 2014 by Siemens Industry, Inc.
To the Reader
Your feedback is important to us. If you have comments about this manual, please
submit them to: [email protected]
Product or company names mentioned herein are the trademarks of their respective
owners.
Printed in USA
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Table of Contents
Introduction .......................................................................................................................... 5
Product Description .............................................................................................................. 5
Safety Summary and Specifications ..................................................................................... 6
Sommaire des informations de sécurité .......................................................................... 8
MD Power Meter Technical Specifications ...................................................................... 9
Maintenance ....................................................................................................................... 11
Installation .......................................................................................................................... 12
Mounting the MD-P1 and MD-P1D Power Meters ............................................................. 12
Connecting the MD-P1 and MD-P1D Power Meters .......................................................... 13
Completing the Wiring Connections - RS-485, Voltage Leads and CTs ....................... 14
Setting the P1 Address ....................................................................................................... 17
Powering the MD-P1 and MD-P1D Power Meters ............................................................. 19
MD-P1 and MD-P1D Power Meters Single-Phase Connections ........................................ 19
Typical 230V Single-Phase Panel Setup....................................................................... 19
Typical 115V Single-Phase Panel Setup....................................................................... 19
System Values ............................................................................................................... 20
Checking Phases ................................................................................................................ 20
Verifying the MD-P1 and MD-P1D Power Meters Setup Using the LEDs .................... 20
MD-P1 and MD-P1D Power Meters Wiring Diagrams........................................................ 21
Supported P1 Applications ................................................................................................. 26
MD-P1 Point Map by Application Number with Point Map Comparison............................. 27
Appendices ........................................................................................................................ 36
Appendix A - Decimal to Hexadecimal Conversion Table .................................................. 36
Appendix B - CT Wire Lead Polarity ................................................................................... 38
Appendix C - MD-P1D with Visual Display ......................................................................... 38
Appendix D - Monitoring and Servicing the MD-P1 and MD-P1D Model Power Meters.... 40
ViewPoint Service Software Tool Functionality ............................................................. 40
Obtaining and Installing ViewPoint Software ................................................................ 40
Connecting and Communicating via a USB Cable ........................................................ 40
Initial Meter Setup.......................................................................................................... 41
Appendix E - Installing Firmware Updates for the MD-P1 and MD-P1D Power Meter ...... 47
Downloading and Installing Firmware ........................................................................... 48
Comms Setup Screen ................................................................................................... 49
Verifying Installation with ViewPoint Software .............................................................. 50
Appendix F - Measuring Consumption (kWh), Demand, and Other Applications .............. 52
Calculating Total Consumption Example ...................................................................... 53
Measuring and Calculating Demand (kW)..................................................................... 58
Trending Data ................................................................................................................ 59
Collecting Energy Data .................................................................................................. 59
Peak Demand Limiting .................................................................................................. 59
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Data Reliability ............................................................................................................... 62
Power Failure................................................................................................................. 62
Frequently Asked Questions - FAQs ................................................................................... 63
Glossary .............................................................................................................................. 63
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Introduction
Product Description
Introduction
Product Description
The MD-P1 and MD-P1D Power Meters monitor the voltage, current, power, energy
and many other electrical parameters on single and three-phase electrical systems.
The meters use direct connections to each phase of the voltage, and use current
transformers to monitor each phase of the current. Information on energy use,
demand, power factor, line frequency and more are derived from the voltage and
current inputs.
The communications interface to the meters is an RS-485 serial connection that uses
the Siemens P1 FLN protocol for sending commands and retrieving data. An APOGEE
Building Management and Control System is usually connected to the MD-P1 or MDP1D Power Meter. This APOGEE system unit provides data recording and trend
logging plus a human interface or display.
Up to 20 MD-P1 or MD-P1D Power Meters may be connected to a single P1 network
for monitoring and recording power usage at multiple locations within a single site.
The MD-P1D Meter, with an integral 2-line × 16 LCD display provides visual feedback
of volts, amps, and Kw, (see Appendix C).
Table 1: Product Numbers
Product Number
Description
P1 Power Meter Bundled Kits
MD-P1-3-CTSC-100A
P1 Meter with three 100A, split-core current transformers with 1" windows
MD-P1-3-CTSC-200A
P1 Meter with three 200A, split-core current transformers with 1" windows
MD-P1-3-CTSC-400A
P1 Meter with three 400A, split-core current transformers with 1.25" windows
MD-P1-3-CTSC-600A
P1 Meter with three 600A, split-core current transformers with 2" windows
MD-P1-3-RC-16
P1 Meter with three 4000A, 16” Rogowski Coil CTs, with 5" diameter windows
MD-P1-3-RC-36
P1 Meter with three 4000A, 36” Rogowski Coil CTs with 10” diameter windows
P1D Power Meter, with Display, Bundled Kits
MD-P1D-3-CTSC-100A
P1D Meter with display, and three 100A, split-core current transformers with 1" windows
MD-P1D-3-CTSC-200A
P1D Meter with display, and three 200A, split-core current transformers with 1" windows
MD-P1D-3-CTSC-400A
P1D Meter with display, and three 400A, split-core current transformers with 1.25" windows
MD-P1D-3-CTSC-600A
P1D Meter with display, and three 600A, split-core current transformers with 2" windows
MD-P1D-3-RC-16
P1D Meter with display, and three 4000A, 16” Rogowski Coil CTs with 5” diameter windows
MD-P1D-3-RC-36
P1D Meter with display, and three 4000A, 36” Rogowski Coil CTs with 10” diameter windows
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Introduction
Safety Summary and Specifications
Figure 1: MD-P1 Power Meter
Figure 2: MD-P1D Power Meter with Display
Safety Summary and Specifications
This general safety information must be used by both the Logger operator and
servicing personnel. Siemens Industry, Inc. assumes no liability for user’s failure to
comply with these safety guidelines.
The MD-P1 and MD-P1D Power Meters are Over-Voltage Category III devices.
Conforms to UL Std 61010-1
and IEC61010-2-030
Certified to CSA Std C22.2 No.
61010-1
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Safety Summary and Specifications
Symbols on Equipment
WARNING
This meter may contain life threatening voltages.
Qualified personnel must disconnect all high voltage wiring before using or servicing
the meter.
CAUTION
Denotes caution.
See manual for a description of the meanings.
WARNING
Shock Hazard
Follow these steps in sequence when connecting the MD Model Power Meter to
prevent a shock hazard:
1. De-energize the circuit to be monitored.
2. Connect the Current Transformers to the phases being monitored.
3. Connect the voltage leads to the different phases. Use proper safety equipment
(gloves and protective clothing) as required for the voltages being monitored.
WARNING
Do not exceed 600 Volts
This meter is equipped to monitor loads up to 600V. Exceeding this voltage will cause
damage to the meter and danger to the user. Always use a Potential Transformer
(PT) for loads in excess of 600V. The MD-P1 and MD-P1Dl Power Meters are 600
Volt Over Voltage Category III devices.
WARNING
Sensor Limitations
Use only shunted Current Transformers (CTs).
Do not use other CTs. Only use shunted CTs with a 333 mV maximum output only.
Serious shock hazard and logger damage can occur if unshunted CTs are used. The
UL listing covers the use of the following Siemens CTs that are UL Recognized and
have been evaluated to IEC 61010-1: SCT-HSC-050-U, SCT-HMC-0100-U, and SCTHMC-0200-U.
Equipment protected throughout by double insulation (IEC 536 Class II).
FCC COMPLIANCE
This device has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in
a commercial environment. This equipment generates, uses, and can radiate radio
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Introduction
Safety Summary and Specifications
frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at user’s own expense.
Operation is subject to the following two conditions: (1) This device may not cause
harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
No accessories are approved for use with the MD-P1 or MD-P1D Power Meters other
than those specified in Siemens Industry’s product literature and price sheets. If the
meter appears to be damaged or defective, first disconnect all power to the meter.
Then, call or email Technical Support for assistance.
Sommaire des informations de sécurité
Ces informations de sécurité sont destinées à être utilisées à la fois par l'opérateur de
l'enregistreur et le personnel de service. Siemens Industry, Inc. n'assume aucune
responsabilité en cas non-respect des directives en matière de sécurité par l’utilisateur.
The MD Power Meter est un appareil protégé contre les surtensions de catégorie III.
Conforme à UL Std 61010-1
IEC 6106-2-030
Certifié CSA Std C22.2 No. 61010-1
Symboles sur l’appareil
CAUTION
Signifie prudence.
Voir le manuel pour une description de la signification.
WARNING
Indique une haute tension.
Risque de choc électrique. Des tensions mettant en danger la vie des personnes
peuvent être présentes. Personnel qualifié uniquement.
CAUTION
Ce compteur peut contenir des tensions pouvant mettre en danger la vie des
personnes.
Un personnel doit débrancher les câbles de haute tension avant d’utiliser ou de
dépanner le compteur.
WARNING
Ne pas utiliser cet appareil à des fins autres que celles indiquées.
Tout autre utilisation peut annuler ses moyens de protection.
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Safety Summary and Specifications
WARNING
Risque d’électrocution
Pour raccorder un MD Model Power Meter à une prise de courant alternatif, suivez
cette séquence pour empêcher tout risque l’électrocution.
1. Mettre hors tension le circuit à surveiller.
2. Connectez le transformateur de courant aux phases à surveiller.
3. Connectez les fils de tension aux différentes phases. Utiliser des équipements de
protection (gants et des vêtements de protection) nécessaires pour les tensions
surveillées.
WARNING
Ne pas dépasser 600 V.
Ce compteur peut contrôler des charges jusqu'à 600 V. Le dépassement de cette
tension peut endommager le compteur et mettre l'utilisateur en danger. Veuillez
toujours utiliser un transformateur de tension pour des charges supérieures à 600 V.
Le MD Power Meter est un appareil à 600 V avec protection contre les surtensions de
catégorie III.
WARNING
Limites du détecteur
N’utilisez que des transformateurs de tension shuntés.
Ne pas utiliser d’autres transformateurs de tension. N’utilisez que des
transformateurs de tension shuntés d’une puissance maximale 333 mV. De sérieux
risques d’électrocution et des dommages à l'enregistreur peuvent se produire si des
transformateurs de tensions non shuntés sont utilisés. La certification UL couvre
l’utilisation des transformateurs de tension de Siemens agréés UL et évalués sous
IEC 61010-1 suivants :
SCT‐HSC‐020‐U, SCT‐HSC‐050‐U, SCT‐HMC‐0100‐U, SCT‐HMC‐0200‐U.
Équipement protégé par double isolation (IEC 536 Classe II)
MD Power Meter Technical Specifications
Specification
Description
Service Types
Single Phase, Three Phase-Four Wire (WYE), Three PhaseThree Wire (Delta)
3 Voltage Channels
80 to 346 Volts AC Line-to-Neutral, 600V Line-to-Line, CAT III
Current Channels (3)
0 to 4,000+ Amps depending on CT. 0.525 Vac maximum
Maximum Current Input
158% of CT rating to maintain accuracy
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Safety Summary and Specifications
Specification
Description
Measurement Type
True RMS using high-speed digital signal processing (DSP)
Line Frequency
50/60 Hz
Meter Power
From L1 Phase to L2 Phase. 80 to 346 Vac CAT III 50/60 Hz
90 mA maximum. Non-user replaceable 0.5 Amp internal fuse
protection.
Waveform Sampling
12 kHz for voltage or current
Channel Sampling Rate
500 milliseconds
Parameter Update Rate
0.5 seconds
Measurements
Volts, Amps, kW, kWh, kVA, kVAR, kVARh, kVAh, Power Factor
(PF), All parameters for each phase and for system total.
Accuracy
0.2% (<0.1% typical) ANSI, C12.20-2010 Class 0.2
Resolution
0.01 Amp, 0.1 Volt, 0.01 watt, 0.01 VAR, 0.01 VA, 0.01 Power
Factor depending on scalar setting
LED Indicators
Bi-color LEDs (red and green): 1 LED to indicate communication,
3 LEDs for correct CT-to-phase installation. One Digital Channel
indicator.
Pulse Output
Open Collector, 5 mA maximum current, 30V maximum open
voltage, optically isolated
Communication
Data Format
P1 FLN over RS-485 Network
Maximum Distance
1200 meters
Baud Rate
4800 baud (fixed, no adjustment)
Data Bits
8
Parity
None
Stop Bit
1
RS 485 Transceiver unit
load size
1/8 Load
Mechanical
Operating Temperature
20°F to 140°F (-7°C to 60°C)
Humidity
5% to 95% non-condensing
Enclosure
ABS plastic, 94-V0 flammability rating
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Maintenance
Mechanical
Weight
12.0 ounces (340 g), exclusive of CTs
Dimensions
9.5” × 3. 3” × 1.6” (24.2 × 8.5 × 4.0 cm)
Ingress Protection
IP 20
Safety
Regulatory Agencies
UL Listed to UL Standard 61010-1 an IEC61010-2-030
cUL certified to CAN/CSA Standard C22.2 No. 61010-1
CE Low Voltage and EMC Directives
Maintenance
There is no required maintenance with the MD-P1 or MD-P1D Power Meters
CAUTION
Do not use cleaning agents of any kind (including water) on the MD-P1 or MD-P1D
Power Meters.
Only accessories specified in Siemens product literature or price sheets are approved
for use with MD-P1 or MD-P1D Power Meters.
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Mounting the MD-P1 and MD-P1D Power Meters
Installation
Figure 3: Power Meter Components and Connections.
WARNING
Remove the meter from all power sources before mounting.
Mounting the MD-P1 and MD-P1D Power Meters
The MD-P1 and MD-P1D Power Meters must be installed in an approved electrical
panel or enclosure using proper installation practices according to the NEC and local
electrical codes.
1. To mount the meter use the two tabs provided at each end of the case or mount on
a 35 mm Top Hat mounting DIN rail (EN 50022).
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Connecting the MD-P1 and MD-P1D Power Meters
Figure 4: Mounting Options.
2. Securely mount the meter near a dedicated circuit disconnect breaker.
Connecting the MD-P1 and MD-P1D Power Meters
All wiring added must be rated for 600V CAT III applications.
The MD-P1 and MD-P1D Power Meters have the following wiring connections:
 An RS-485 connection with plus, minus and shield for the P1 network wiring.
 Four connections for voltage sources (L1, L2, L3, and Neutral). These connections
are on the red wiring connector.
The MD-P1 and MD-P1D Power Meters are self-powered from L1 and L2.
– Up to three current transducers (CTs) can be used with the three green 3-input
wiring connectors (one CT per each green connector).
– Digital output port. The port can be used to output kWh, kVARh, or kVAh
pulses to external devices, or to toggle on and off to control a remote device or
relay.
– USB port. This is located on the side of the meter, and can be connected to a
PC Service Tool with a USB type AB cable.
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Connecting the MD-P1 and MD-P1D Power Meters
Figure 5: Power Meter Connections.
Completing the Wiring Connections - RS-485, Voltage
Leads and CTs

Mechanically secure FLN cable where it enters electrical utility panel.
WARNING
The FLN cable within electric panels and switchgear should be jacketed, shielded,
twisted triad wire BELDEN 1121A. The jacket insulation rating should be 600V.
DO NOT connect FLN cable to field panel yet.
WARNING
At this time, DO NOT connect the FLN cable to the FLN trunk.
Doing so may damage FLN devices or cause personal injury.
1. Remove the black RS-485 connector from the MD-P1 or MD-P1D Power Meter and
wire the FLN cable to the RS-485 connector. Connect positive (+), and negative (-)
wires to the FLN connector using the daisy-chain method (see Figure 6). Keep
length of exposed wire to a minimum.
2. Connect the COMMON wire to the RS-485 connector (S) terminal (see Figure 6).
3. Tape back one of the FLN cable shields and connect the other shield to the Utility
Panel Ground.
4. If the MD-P1 or MD-P1D is the last FLN device, install the end of line terminator on
the positive (+) and negative (-) terminals. See APOGEE Wiring Guidelines for
Field Panels and Equipment Controllers (125-3002) for additional information.
5. Tape or shrink wrap all FLN wire terminations and insulate any other exposed FLN
wiring. Ensure that insulation complies with local and national electrical codes.
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6. Plug the terminal block back into the MD-P1 or MD-P1D Power Meter and
mechanically secure the FLN wire terminations to the power meter to prevent
accidental removal.
Figure 6: Connecting and Insulating FLN Cable on MD-P1/D FLN Connector.
WARNING
Carefully insulate all FLN lines, including shield, to prevent accidental contact to high
voltage conductors.
After wiring FLN cable, remove all scraps of wire or foil shield from electrical utility
panel.
7. Energize the MD-P1 or MD-P1D Power Meter. It is powered through the red power
connector (see wiring connections in Figure 3).
8. Verify proper power meter operation. For normal operation, the RS-485 LED blinks.
9. Close the electric equipment housing.
10. Using a voltmeter, check for high voltage. There should be no significant voltage
(no more than 5V AC or DC) from either FLN leg to ground. If voltage is higher than
5V, check for incorrect wiring.
WARNING
To avoid personal injury or damage to FLN trunk devices, verify no significant voltage
(no more than 5V) exists on the FLN. The MD-P1 and MD-P1D Power Meters are
designed to be located inside high voltage switchgear. They measure electrical use,
and connect directly to the FLN.
11. Insert the CT wires into the green connector/s.
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Connecting the MD-P1 and MD-P1D Power Meters
Figure 7: Wiring Connections.
12. Attach the CTs on the power meter's connections labeled CT 1, CT 2 and CT 3.
13. Place the CTs on the phase wires of the load to be monitored and corresponding to
the phase of the voltage leads. The CT labeled CT 1 must be placed on L1 phase
voltage wire, CT 2 must be on the L2 voltage and CT 3 on the L3 voltage. See
Checking Phases for information about the CT LEDs and verifying the CT
installation.
When using the MD-P1 or MD-P1D Model Power Meter with Rogowski Coils (or CTs),
unused CT input(s) should be shorted with a jumper wire if all three coils are not
connected. An unconnected CT input may not show "zero" current due to stray pickup
on the open input.
WARNING
USE ONLY SHUNTED CURRENT TRANSFORMERS (CTs). DO NOT USE 5A
SECONDARY CTs OR UNSHUNTED CTs.
Do not use other CTs. Only use shunted CTs with a 333 mV maximum output.
Serious shock hazard and meter damage can occur if unshunted CTs are used
Use only the following Siemens Industry CTs that are UL listed/Recognized and have
been evaluated to IEC 61010-1. See Figure 7.
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Setting the P1 Address
14. Connect electrical power to the power meter's red power connection plugs using 14
AWG THHN (or equivalent) wires, after a building-installed, dedicated circuit
disconnect breaker, as close as possible to the breaker. Mark the breaker as the
disconnect for the meter. See Wiring Diagrams for specifics of the wiring
connections.
Follow local electrical codes during this installation.
CAUTION
Do not strap or mount an MD-P1 or MD-P1D Power Meter less than two inches from
current carrying conductors.
The magnetic field around the conductors may affect the electronics in the meter.
The MD-P1 and MD-P1D Power Meters have an internal non-user replaceable 0.5
Amp internal fuse protection.
WARNING
Do not exceed 600 Vac Phase-to-Phase CATIII.
The MD-P1 and MD-P1D Power Meters are rated for measurement category III.
These measurements are performed in the building installation. Examples are:
measurements on distribution boards, circuit breakers, wiring including cables,
busbars, junction boxes, switches, socket outlets in a fixed installation, and
equipment for industrial use. Other equipment could include stationary meters with a
permanent connection to the fixed installation.
Setting the P1 Address
The MD-P1 and MD-P1D Power Meters communicate over an RS-485 serial
communication network using Siemens P1-FLN protocol ONLY. These meters are
designed to operate at a fixed 4800 baud rate.
To communicate on the Siemens APOGEE BMS network, the meter must have a
specific network address. The P1 network address switches are located on the front of
the meters (see Figure 8). The network address for the device is manually set using
these two rotary switches; noting the most significant bit (MSB) and least significant bit
(LSB) markings.
These network addresses must be entered in hexadecimal format, not decimal format
(see Appendix A - Decimal to Hexadecimal Conversion Table).
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Setting the P1 Address
Figure 8: Address Switches Location.
Table 2: P1 Address Decimal to Hexadecimal Conversion.
Decimal
Hex
Decimal
Hex
Decimal
Hex
Decimal
Hex
0
00
8
08
16
10
24
18
1
01
9
09
17
11
25
19
2
02
10
0A
18
12
26
1A
3
03
11
0B
19
13
27
1B
4
04
12
0C
20
14
28
1C
5
05
13
0D
21
15
29
1D
6
06
14
0E
22
16
30
1E
7
07
15
0F
23
17
31
1F
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Powering the MD-P1 and MD-P1D Power Meters
Powering the MD-P1 and MD-P1D Power Meters
The MD-P1 and MD-P1D Power Meters are self-powered from the L1 and L2 lines.
When 80 to 600 Vac or Vdc is placed across the L1 and L2 wires, the three phasing
LEDs begin to flash in sequence.
For accurate measurements, the neutral conductor must be installed.
MD-P1 and MD-P1D Power Meters Single-Phase
Connections
The MD-P1 and MD-P1D Power Meters can be used to monitor single-phase loads.
There are several guidelines to keep in mind about this type of connection:
1. The power meter is powered from a potential between L1 and L2. This can be
phase-to-phase (230V) or phase-to-neutral (115V). With a single-phase 230V
panel, the L1 and L2 voltage leads are connected between the L1 and L2 voltage
sources. With a 115V circuit, the L1 voltage lead is connected to the L1 “hot lead,”
and the L2 voltage lead is connected to neutral.
2. Each CT must be paired with the correct voltage source. The current and voltage
must be in-phase for accurate measurements. For instance, CT 1 would monitor
branch circuit supplied by voltage source L1, and so on.
3. The neutral must be connected because MD-P1 and MD-P1D Power Meters use
line-to-neutral measurements for all calculations.
Typical 230V Single-Phase Panel Setup
Provide wiring from the red terminal block to the panel:
 L1 Terminal to Voltage L1 (black)
 L2 Terminal to Voltage L2 (red)
 White Neutral voltage lead to Neutral.
CT1 will monitor L1 loads and CT2 will monitor L2 loads. Based on the above
guidelines, CT3 can be used if the blue L3 voltage lead is connected to either L1 or L2.
If voltage leads L3 and CT3 are in-phase, the MD-P1 and MD-P1D Power Meters will
provide correct kW readings. If the blue L3 voltage lead is connected to the L2 voltage
source, then CT3 can monitor any L2 branch circuit. Or, if the blue L3 voltage lead is
connected to the L1 voltage source, then CT3 can monitor any L1 branch circuit.
Typical 115V Single-Phase Panel Setup
Provide wiring from the red terminal block to the panel:
 L1 Terminal to Voltage L1 (black)
 L2 Terminal to Voltage L2 (red)
 White N voltage lead to neutral.
The power supply is across the black (L1) and the red (L2) lead; therefore, the red (L2)
lead must also be connected to the neutral line.
CT1 will monitor the L1 load. CT3 can be used if the blue L3 voltage lead is connected
to L1. CT3 could then monitor any L1 branch circuit.
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Checking Phases
System Values
System values are the sum of L1 + L2 + L3 measurements. System values may not be
meaningful since two different devices or loads can be monitored by a single MD-P1 or
MD-P1D Power Meter element.
When paired with the correct voltage phase, each CT provides individual kW/kWh
readings for that CT channel.
Checking Phases
The CT phase-checking LEDs are a unique feature of the MD-P1 and MD-P1D Power
Meters that simplify installation by ensuring proper CT-to-phase installation and
avoiding faulty data collection. The power meters automatically adjust for CT
orientation—reducing set-up time and nearly eliminating installation errors.
Verifying the MD-P1 and MD-P1D Power Meters
Setup Using the LEDs
The MD-P1 and MD-P1D Power Meter have three bi-color LEDs for each element.
These LEDs provide the following information:
 All LEDs are green — the system power factor is greater than 0.55 and the CTs
are properly placed on the corresponding voltage phases.
 Any one LED is red — there is a phasing connection error.
 Two LEDs are red and one is green — two CTs are reversed.
 All three LEDs are red — all CTs are incorrectly connected.
If the total system power factor is less than 0.55, the LEDs are red even if connected
properly. This situation is rare but can occur if, for example, the load to be monitored
is a lightly loaded electric motor where it is common for the power factor to be less
than 0.55 and the corresponding LEDs will be red.
20
Siemens Industry, Inc.
125-201
2014-09-19
Installation
MD-P1 and MD-P1D Power Meters Wiring Diagrams
The following table describes error conditions and the appropriate correction:
Table 3: LED Error Resolution.
CT1
CT2
CT3
Error Description
Correction
Green Green Green Setup is correct and the system Connect the CTs.
power factor is greater than 0.55,
or all CTs are disconnected.
Red
Red
Red
All CTs are incorrectly
connected,
-orthe system power factor is less
than 0.55.
Rotate the CT connections by one
position by moving CT1 to CT2,
CT2 to CT3, and CT3 to CT1, until
all LEDs are green.
The system power factor is less
than 0.55, but the CTs are
connected properly indicating a
light load.
Green Red
Red
CT2 and CT3 are reversed.
Switch the position of the CTs
flashing red.
Red
Red
Green CT1 and CT2 are reversed.
Switch the position of the CTs
flashing red.
Red
Green Green CT1 is swapped with either CT2
or CT3.
Green Red
Green CT2 is swapped with either CT1
or CT3.
Switch CT1 with CT2,
or switch CT1 with CT3.
Switch CT2 with CT1,
or switch CT2 with CT3.
Green Green Red
CT3 is swapped with either CT1
or CT2.
Switch CT3 with CT1,
or switch CT3 with CT2.
Red
CT1 and CT3 are reversed
Switch the position of the CTs
flashing red.
Green Red
MD-P1 and MD-P1D Power Meters Wiring Diagrams
The MD-P1 and MD-P1D Power Meters can be wired using any one of the following
five common wiring setups. These diagrams will assist you in properly connecting your
power meter for the setup desired.
NOTE:
All wire colors are U.S. Standard, and differ from Canadian standards.
For Canadian installations, reverse the red and black wires (L1 = Red, L2 = Black).
WARNING
DO NOT EXCEED 600 Vac PHASE-TO-PHASE CAT III.
When complete, close the enclosure cover, if equipped.
21
Siemens Industry, Inc.
125-201
2014-09-19
Installation
MD-P1 and MD-P1D Power Meters Wiring Diagrams
WARNING
Hazardous voltages exist.
MD-P1 and MD-P1D Power Meters should only be wired by qualified personnel.
Figure 9: Two-Wire Single Phase.
22
Siemens Industry, Inc.
125-201
2014-09-19
Installation
MD-P1 and MD-P1D Power Meters Wiring Diagrams
Figure 10: Three-Wire Single-Phase.
23
Siemens Industry, Inc.
125-201
2014-09-19
Installation
MD-P1 and MD-P1D Power Meters Wiring Diagrams
Figure 11: Three-Wire Delta.
24
Siemens Industry, Inc.
125-201
2014-09-19
Installation
MD-P1 and MD-P1D Power Meters Wiring Diagrams
Figure 12: Four-Wire Wye.
25
Siemens Industry, Inc.
125-201
2014-09-19
1
Supported P1 Applications
MD-P1 and MD-P1D Power Meters Wiring Diagrams
Supported P1 Applications
The MD-P1 and MD-P1D Power Meters are factory pre-programmed for the following
applications when ordered in a kit with the appropriate current CTs:
Application
Usage
2771
50 Amp CTs
2772
1000 Amp CTs
2773
100 Amp CTs (default for MD-P1x-3-CTSC-100A)
2774
200 Amp CTs (default for MD-P1x-3-CTSC-200A)
2775
400 Amp CTs (default for MD-P1x-3-CTSC-400A)
2776
600 Amp CTs (default for MD-P1x-3-CTSC-600A)
2777
4000 Amp Rogowski Coil (default for MD-P1x-3-RC-xx)
2779
Universal (scaling must be set at the job site)
If an MD-P1 or MD-P1D Power Meter is ordered as a spare, it will leave the factory
configured for Application 2779.
26
Siemens Industry, Inc.
125-201
2014-09-19
Siemens Industry, Inc.
MD-P1 Point Map by Application Number with Point Map Comparison
Table 4: MD-P1 Point Map by Application Number with Point Map Comparison to DEM1000, DEM2000
P1
Point
Point
Type
P1 Name
Type
No.
Units
Default
Value
Detail
Slope
for P1
Apps
Interce
pt for
P1
Apps
MD-P1
Series**
Apps
27712777
MD-P1
DEM1000*
DEM2000*
Series** Apps 710-716 Apps 717-723
App
2779
LAI
3
ADDRESS
99
MD-P1 rotary hex switch (MSB and
LSB) on front of meter
1
0
∙
∙
∙
∙
2
LAO
4
APPLICATION
Application
Number
P1 Application Number based on
selected CT Current Range
(can only change via WCIS tool)
1
0
∙
∙
∙
∙
3
LAI
3
FREQUENCY
Hz
0
Measured Line Frequency
0.1
0
∙
∙
4
LAI
3
KW DEM MAX
kW
0
System Maximum Power Demand
or Peak Demand
- returns max demand value read
since startup or reset of demand
register
0.1
0
∙
∙
5
not used
not used
LAI
3
KW DEM MIN
kW
0
System Minimum PowerDemand
- returns min demand value read
since startup or reset of demand
register
0.1
0
∙
∙
7
LAI
3
KW
kW
0
System Total True Power =
ABS(kW L1) + ABS(kW L2) +
ABS(kW L3)
0.1
0
∙
∙
8
LAI
3
CONSUMPTN LO
kWh
0
System Total Net True Energy LSW
=ABS(kWh L1) + ABS(kWh L2) +
ABS(kWh L3)
1.0
0
∙
∙
∙
∙
9
LAI
3
CONSUMPTN HI
kWh
0
System Total Net True Energy
MSW
=ABS(kWh L1) + ABS(kWh L2) +
ABS(kWh L3)
1.0
0
∙
∙
∙
∙
Supported P1 Applications
6
MD-P1 Point Map by Application Number with Point Map Comparison
1
27
125-201
2014-09-19
28
Point
Type
Type
No.
P1 Name
Units
Default
Value
Slope
for P1
Apps
Interce
pt for
P1
Apps
MD-P1
Series**
Apps
27712777
MD-P1
DEM1000*
DEM2000*
Series** Apps 710-716 Apps 717-723
App
2779
125-201
2014-09-19
10
LAI
3
DEMAND
kW
0
System Average Power Demand
- returns new value every min., will
compare and post to min/max
registers
0.1
0
∙
∙
11
LAI
3
POWER FACTOR
PF
0
System Total Displacement Power
Factor
0.01
0
∙
∙
∙
12
LAI
3
CURRENT
A
0
System Average Current for All
Phases
0.01 for
2771,
2773,
2774
0.02 for
2775.
2776
0.05 for
2772,
2777
1.0 for
2779
0
∙
∙
∙
13
LAI
3
VOLTAGE LL
V
0
Average Line to Line Voltage for all
Phases
0.1
0
∙
∙
∙
14
LAI
3
VOLTAGE LN
V
0
Average Line to Neutral Voltage for
all Phases
0.1
0
∙
∙
∙
15
LAI
3
APPARENT PWR
kVA
0
System Total Apparent Power
= unsigned value of ABS(kVA
L1)+ABS(kVA L2)+ABS(kVA L3)
0.1
0
∙
∙
∙
16
LAI
3
REACTIVE PWR
kVAR
0
System Total Reactive Power
= unsigned value of ABS(kVAR
L1)+ABS(kVAR L2)+ABS(kVAR L3)
0.1
0
∙
∙
∙
17
LAI
3
VOLTAGE A B
V
0
Individual Phase L1 to Phase L2
Voltage
0.1
0
∙
∙
∙
18
LAI
3
VOLTAGE B C
V
0
Individual Phase L2 to Phase L3
Voltage
0.1
0
∙
∙
∙
19
LAI
3
VOLTAGE A C
V
0
Individual Phase L1 to Phase L3
Voltage
0.1
0
∙
∙
∙
∙
∙
Supported P1 Applications
Detail
MD-P1 Point Map by Application Number with Point Map Comparison
Siemens Industry, Inc.
P1
Point
Siemens Industry, Inc.
P1
Point
Point
Type
Type
No.
P1 Name
20
LAO
4
OVRD TIME
21
LAI
3
VOLTAGE A N
22
LAI
3
23
LAI
24
Units
Default
Value
Detail
Slope
for P1
Apps
Interce
pt for
P1
Apps
MD-P1
Series**
Apps
27712777
MD-P1
DEM1000*
DEM2000*
Series** Apps 710-716 Apps 717-723
App
2779
1
0
∙
∙
∙
V
0
Individual Phase L1 to Neutral
Voltage
0.1
0
∙
∙
∙
VOLTAGE B N
V
0
Individual Phase L2 to Neutral
Voltage
0.1
0
∙
∙
∙
3
VOLTAGE C N
V
0
Individual Phase L3 to Neutral
Voltage
0.1
0
∙
∙
∙
LAI
3
CURRENT A
A
0
Individual Phase L1 Current
0
∙
∙
∙
25
LAI
3
CURRENT B
A
0
Individual Phase L2 Current
∙
∙
∙
26
LAI
3
CURRENT C
A
0
Individual Phase L3 Current
0.01 for
2771,
2773,
2774
0.02 for
2775.
2776
0.05 for
2772,
2777
1.0 for
2779
∙
∙
∙
27
LAI
3
KW AVG POS
kW
0
System Average Positive Power
Draw
= positive kW System / (Time since
Reset/3600sec/Hour (resettable)
0.1
0
∙
∙
28
LAI
3
KW AVG NEG
kW
0
System Average Negative Power
Draw
= negative kW System / (Time
since Reset/3600sec/Hour
(resettable)
0.1
0
∙
∙
29
LDO
2
DAY.NGT
0
0 = DAY (off text = "DAY"); 1 =
NIGHT (on text = "NIGHT")
1
0
∙
∙
30
LAI
3
KW MAX
0
System Maximum Instantaneous
Power Draw
= system highest 500ms power
draw value since reset (resettable)
0.1
0
∙
∙
kW
∙
Supported P1 Applications
P1 Override Time
MD-P1 Point Map by Application Number with Point Map Comparison
29
125-201
2014-09-19
0
30
Point
Type
P1 Name
Type
No.
Units
Default
Value
Detail
Interce
pt for
P1
Apps
MD-P1
Series**
Apps
27712777
MD-P1
DEM1000*
DEM2000*
Series** Apps 710-716 Apps 717-723
App
2779
125-201
2014-09-19
31
LAI
3
KW MAX POS
kW
0
System Maximum Instantaneous
Positive Power Draw
= system max 500ms positive
power draw value since reset
(resettable)
0.1
0
∙
∙
32
LAI
3
KW MAX NEG
kW
0
System Maximum Instantaneous
Negative Power Draw
= system max 500ms negative
power draw value since reset
(resettable)
0.1
0
∙
∙
33
LAI
3
KW MIN
kW
0
System Minimum Instantaneous
Power Draw
= system lowest 500ms power draw
value since reset (resettable)
0.1
0
∙
∙
34
LAI
3
KW MIN POS
kW
0
System Minimum Instantaneous
Positive Power Draw
= system min 500ms positive power
draw value since reset (resettable)
0.1
0
∙
∙
35
LAI
3
KW MIN NEG
kW
0
System Minimum Instantaneous
Negative Power Draw
= system min 500ms negative
power draw value since reset
(resettable)
0.1
0
∙
∙
36
LAI
3
KW A
kW
0
Individual instantaneous Phase L1
True Power
0.1
0
∙
∙
37
LAI
3
KW B
kW
0
Individual instantaneous Phase L2
True Power
0.1
0
∙
∙
38
LAI
3
KW C
kW
0
Individual instantaneous Phase L3
True Power
0.1
0
∙
∙
39
LAI
3
KVAR A
kVAR
0
Individual instantaneous Phase L1
Reactive Power
0.1
0
∙
∙
40
LAI
3
KVAR B
kVAR
0
Individual instantaneous Phase L2
Reactive Power
0.1
0
∙
∙
Supported P1 Applications
Slope
for P1
Apps
MD-P1 Point Map by Application Number with Point Map Comparison
Siemens Industry, Inc.
P1
Point
Siemens Industry, Inc.
P1
Point
Point
Type
Type
No.
P1 Name
Units
Default
Value
Detail
Slope
for P1
Apps
Interce
pt for
P1
Apps
MD-P1
Series**
Apps
27712777
MD-P1
DEM1000*
DEM2000*
Series** Apps 710-716 Apps 717-723
App
2779
3
KVAR C
kVAR
0
Individual instantaneous Phase L3
Reactive Power
0.1
0
∙
∙
42
LAI
3
KVAR DEM MAX
kVAR
0
System Maximum Instantaneous
Reactive Power Demand
= maximum demand value read
since startup or reset of demand
register
0.1
0
∙
∙
43
LAI
3
KVAR DEM NOW
kVAR
0
System Average Reactive Power
Demand
returns new value every minute, will
compare and post to min/max
registers
0.1
0
∙
∙
44
LAI
3
KVARH NET LO
kVARh
0
System Total Net Reactive Energy
LSW
= unsigned value of ABS(kVARh
L1)+ABS(kVARh L2)+ABS(kVARh
L3)
1
0
∙
∙
45
LAI
3
KVARH NET HI
kVARh
0
System Total Net Reactive Energy
MSW
= unsigned value of ABS(kVARh
L1)+ABS(kVARh L2)+ABS(kVARh
L3)
1
0
∙
∙
46
LAI
3
KVAR SYS NET
kVAR
0
System Net Total Reactive Power
= signed net value of ABS(kVAR
L1)+ABS(kVAR L2)+ABS(kVAR L3)
0.1
0
∙
∙
47
LAI
3
KWH NT P LO
kWh
0
System Net Lowest Positive True
Energy
1
0
∙
∙
48
LAI
3
KWH NT P HI
kWh
0
System Net Highest Positive True
Energy
1
0
∙
∙
49
LAI
3
KWH NT N LO
kWh
0
System Net Lowest Negative True
Energy
1
0
∙
∙
50
LAI
3
KWH NT N HI
kWh
0
System Net Highest Negative True
Energy
1
0
∙
∙
Supported P1 Applications
LAI
MD-P1 Point Map by Application Number with Point Map Comparison
31
125-201
2014-09-19
41
32
Point
Type
Type
No.
P1 Name
Units
Detail
Default
Value
Interce
pt for
P1
Apps
MD-P1
Series**
Apps
27712777
MD-P1
DEM1000*
DEM2000*
Series** Apps 710-716 Apps 717-723
App
2779
51
LAI
3
KW NET POS
kW
0
System Net Positive Power
0.1
0
∙
∙
52
LAI
3
KW NET NEG
kW
0
System Net Negative Power
0.1
0
∙
∙
53
LAI
3
KVAH LO
kVAh
0
System Total Apparent Energy LSW
= unsigned value of ABS(kVAh
L1)+ABS(kVAh L2)+ABS(kVAh L3)
1
0
∙
∙
54
LAI
3
KVAH HI
kVAh
0
System Total Apparent Energy MSW
= unsigned value of ABS(kVAh
L1)+ABS(kVAh L2)+ABS(kVAh L3)
1
0
∙
∙
55
not used
not used
56
not used
not used
57
not used
not used
58
not used
not used
59
not used
not used
60
not used
not used
61
not used
not used
125-201
2014-09-19
62
LAI
3
KVA NET POS
kVA
0
System Net Positive Instantaneous
Positive Total Apparent Power
= signed net value of ABS(poskVA
L1)+ABS(poskVA L2)+ABS(poskVA
L3)
0.1
0
∙
∙
63
LAI
3
KVA NET NEG
kVA
0
System Net Positive Instantaneous
Negative Total Apparent Power
= signed net value of ABS(negkVA
L1)+ABS(negkVA
L2)+ABS(negkVA L3)
0.1
0
∙
∙
64
LAI
3
KVA A
kVA
0
Individual Phase L1 Apparent
Power
0.1
0
∙
∙
Supported P1 Applications
Slope
for P1
Apps
MD-P1 Point Map by Application Number with Point Map Comparison
Siemens Industry, Inc.
P1
Point
Siemens Industry, Inc.
P1
Point
Point
Type
Type
No.
P1 Name
Units
Default
Value
Detail
Slope
for P1
Apps
Interce
pt for
P1
Apps
MD-P1
Series**
Apps
27712777
MD-P1
DEM1000*
DEM2000*
Series** Apps 710-716 Apps 717-723
App
2779
3
KVA B
kVA
0
Individual Phase L2 Apparent
Power
0.1
0
∙
∙
66
LAI
3
KVA C
kVA
0
Individual Phase L3 Apparent
Power
0.1
0
∙
∙
67
LAI
3
KVA DEM MAX
kVA
0
System Maximum Instantaneous
Appparent Power Demand
= maximum demand value read
since startup or reset of demand
register
0.1
0
∙
∙
68
LAI
3
KVA DEM NOW
kVA
0
System Average Apparent Power
Demand
returns new value every minute, will
compare and post to min/max
registers
0.1
0
∙
∙
69
LAO
4
DATA SCALAR
3
A Value of 0-6 that changes the
scaling of certain registers.
1
0
70
LAO
4
DEMAND WIN
15
Demand window size in minutes;
default is 15 minutes.
1
0
∙
∙
71
LAO
4
VOLT MULT
1
Multiply volts values by this scalar.
Use with Step-down Transformer.
Affects all parameters that use volts
(such as, kW).
1
0
∙
∙
72
LDO
2
CTA TYPE
1
Select 1 = mV CT (on text = "MV")
or 2 = Rogowski CT (off text =
"ROGO")
1
0
∙
73
LDO
2
CTB TYPE
1
Select 1 = mV CT (on text = "MV")
or 2 = Rogowski CT (off text =
"ROGO")
1
0
∙
74
LDO
2
CTC TYPE
1
Select 1 = mV CT (on text = "MV")
or 2 = Rogowski CT (off text =
"ROGO")
1
0
∙
75
LAO
4
CTA VALUE
100
Fractional part of NV_CT1
1
0
∙
min
A
∙
Supported P1 Applications
LAI
MD-P1 Point Map by Application Number with Point Map Comparison
33
125-201
2014-09-19
65
34
Point
Type
Type
No.
P1 Name
Units
Detail
Default
Value
Interce
pt for
P1
Apps
MD-P1
Series**
Apps
27712777
MD-P1
DEM1000*
DEM2000*
Series** Apps 710-716 Apps 717-723
App
2779
76
LAO
4
CTB VALUE
A
100
Fractional part of NV_CT2
1
0
∙
77
LAO
4
CTC VALUE
A
100
Fractional part of NV_CT3
1
0
∙
not used
78
not used
79
LAO
4
PULSE1 CONF.
0
0 = No pulses, Port may be used as
an on/off, open/closed switch. Ports
used to output kWh (1), kVARh (2),
or kVAh (3) pulses to external
devices.
1
0
∙
∙
80
LDO
2
PULSE1 REL
0
0 = normally open (off text =
"LOW"); 1 = normally closed (on
text = "HIGH")
1
0
∙
∙
not used
81
not used
82
LAI
3
TSRHOUR
hrs
0
The number of hours that meter
has been powered up since the
accumulation point has been
cleared by point 98 - CLEAR ACUM
1
0
∙
∙
83
LAI
3
TSRDAY
day
0
The number of days that meter has
been powered up since the
accumulation point has been
cleared by point 98 - CLEAR ACUM
1
0
∙
∙
84
LAI
3
DATA TICK
sec
0
Internal sample count (gets cleared
every minute): may be used to
determine if sample read is a newer
sample than last read.
1
0
∙
∙
not used
85
not used
86
LAO
4
CTA PHASE SH
deg
1.1
Phase Shift × 100 +/-
0.01
0
∙
87
LAO
4
CTB PHASE SH
deg
1.1
Phase Shift × 100 +/-
0.01
0
∙
88
LAO
4
CTC PHASE SH
deg
1.1
Phase Shift × 100 +/-
0.01
0
∙
125-201
2014-09-19
89
not used
not used
Supported P1 Applications
Slope
for P1
Apps
MD-P1 Point Map by Application Number with Point Map Comparison
Siemens Industry, Inc.
P1
Point
Siemens Industry, Inc.
P1
Point
Point
Type
Type
No.
P1 Name
LDO
2
SERVICE TYPE
91
LAO
4
FREQ SET
92
LAO
4
93
LAO
94
LAO
Detail
Default
Value
Slope
for P1
Apps
Interce
pt for
P1
Apps
MD-P1
Series**
Apps
27712777
MD-P1
DEM1000*
DEM2000*
Series** Apps 710-716 Apps 717-723
App
2779
A value of 0x0000 configures the
meter for WYE (off text = "WYE");
A value of 0x0001 configures the
meter for DELTA (on text =
"DELTA")
1
0
∙
∙
Hz
60
Line frequency setting for metering:
50 = 50 Hz, 60 = 60Hz, 400 = 400
Hz
1
0
∙
∙
SNAP MV
per
0.04
The amperage (current) value as a
percentage of the CT value that will
"snap" to 0 amps when the
amperage is < (snap % * CT Value)
0.01
0
∙
∙
4
SNAP RO
per
0.17
Similar to the SNAP mV percentage
above, this is used for Rogowski
coils (by default it is .17%)
0.01
0
∙
∙
4
SNAP VOLT
V
10
Defined in volts, not a percentage
of the maximum voltage input.
1
0
∙
∙
1
0
∙
∙
1
0
∙
∙
95
not used
not used
96
not used
not used
97
not used
not used
98
LDO
2
CLEAR ACUM
0
99
LAO
4
ERROR STATUS
0
* DEM P1 Applications 710 to 723
** MD-P1 Series P1 Applications 2772 to 2779
Resets all 'H' registers,
accumulated meter data (kWh,
kWh, and so on) stored in flash to
CAM Default value. (off text =
"ACC", on text = "CAM")
Supported P1 Applications
0
MD-P1 Point Map by Application Number with Point Map Comparison
90
Units
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Appendices
Appendix A - Decimal to Hexadecimal Conversion Table
Appendices
Appendix A - Decimal to Hexadecimal Conversion Table
Decimal values are used for the MD Model Power Meter addresses. The hex value is
the corresponding value set on the upper and lower rotary network address switches
on the MD Model Power Meter.
 Upper rotary network address switch = high (first) digit
 Lower rotary network address switch = low (second) digit
Table 5: Decimal to Hexadecimal Conversion.
Decimal Hex Decimal
Hex
Decimal
Hex Decimal Hex Decimal Hex Decimal Hex
1
01
44
2C
87
57
130
82
173
AD
216
D8
2
02
45
2D
88
58
131
83
174
AE
217
D9
3
03
46
2E
89
59
132
84
175
AF
218
DA
4
04
47
2F
90
5A
133
85
176
B0
219
DB
5
05
48
30
91
5B
134
86
177
B1
220
DC
6
06
49
31
92
5C
135
87
178
B2
221
DD
7
07
50
32
93
5D
136
88
179
B3
222
DE
8
08
51
33
94
5E
137
89
180
B4
223
DF
9
09
52
34
95
5F
138
8A
181
B5
224
E0
10
0A
53
35
96
60
139
8B
182
B6
225
E1
11
0B
54
36
97
61
140
8C
183
B7
226
E2
12
0C
55
37
98
62
141
8D
184
B8
227
E3
13
0D
56
38
99
63
142
8E
185
B9
228
E4
14
0E
57
39
100
64
143
8F
186
BA
229
E5
15
0F
58
3A
101
65
144
90
187
BB
230
E6
16
10
59
3B
102
66
145
91
188
BC
231
E7
17
11
60
3C
103
67
146
92
189
BD
232
E8
18
12
61
3D
104
68
147
93
190
BE
233
E9
19
13
62
3E
105
69
148
94
191
BF
234
EA
20
14
63
3F
106
6A
149
95
192
C0
235
EB
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Appendices
Appendix A - Decimal to Hexadecimal Conversion Table
Decimal Hex Decimal
Hex
Decimal
Hex Decimal Hex Decimal Hex Decimal Hex
21
15
64
40
107
6B
150
96
193
C1
236
EC
22
16
65
41
108
6C
151
97
194
C2
237
ED
23
17
66
42
109
6D
152
98
195
C3
238
EE
24
18
67
43
110
6E
153
99
196
C4
239
EF
25
19
68
44
111
6F
154
9A
197
C5
240
F0
26
1A
69
45
112
70
155
9B
198
C6
241
F1
27
1B
70
46
113
71
156
9C
199
C7
242
F2
28
1C
71
47
114
72
157
9D
200
C8
243
F3
29
1D
72
48
115
73
158
9E
201
C9
244
F4
30
1E
73
49
116
74
159
9F
202
CA
245
F5
31
1F
74
4A
117
75
160
A0
203
CB
246
F6
32
20
75
4B
118
76
161
A1
204
CC
247
F7
33
21
76
4C
119
77
162
A2
205
CD
248
F8
34
22
77
4D
120
78
163
A3
206
CE
249
F9
35
23
78
4E
121
79
164
A4
207
CF
250
FA
36
24
79
4F
122
7A
165
A5
208
D0
251
FB
37
25
80
50
123
7B
166
A6
209
D1
252
FC
38
26
81
51
124
7C
167
A7
210
D2
253
FD
39
27
82
52
125
7D
168
A8
211
D3
254
FE
40
28
83
53
126
7E
169
A9
212
D4
255
---
41
29
84
54
127
7F
170
AA
213
D5
---
---
42
2A
85
55
128
80
171
AB
214
D6
---
---
43
2B
86
56
129
81
172
AC
215
D7
---
---
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Appendices
Appendix B - CT Wire Lead Polarity
Appendix B - CT Wire Lead Polarity
Table 6: CT Polarity.
CT Type
CT Lead +
CT Lead -
Rogowski
White
Brown
Split Core mV
White
Black
For Rogowski CTs, the arrow points toward the load (for example, motor).
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Appendices
Appendix C - MD-P1D with Visual Display
Appendix C - MD-P1D with Visual Display
The MD-P1D Power Meter features a backlit digital display. It has two rows of 16
characters that auto cycle between informational screens every two to three seconds,
with real-time values updated every second. A hold button (located on the side of the
meter near the USB jack) will stop the cycle until it is pressed again or a set timeout is
reached The following flowchart shows the information displayed during the cycles.
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Appendices
Appendix D - Monitoring and Servicing the MD-P1 and MD-P1D Model Power Meters
Appendix D - Monitoring and Servicing the MD-P1 and MDP1D Model Power Meters
There are multiple tasks that are typically completed with your Siemens MD-P1 and
MD-P1D Power Meters before being installed.
ViewPoint Service Software Tool Functionality
The ViewPoint Service software is designed to operate on a laptop computer and
interface to the MD-P1 or MD-P1D Power Meters through a USB cable connection.
ViewPoint software is compatible with Windows® 7 (32- or 64-bit), Vista (32- or 64-bit),
XP or 2000.
When ViewPoint is connected to the power meter using a USB cable, power is
provided to operate the meter from the USB port. No additional power wiring is needed
for this setup and service mode. The service software tool will support a few commonly
used service functions such as:
 Upload MD-P1 and MD-P1D Power Meter settings into ViewPoint for viewing within
the service tool.
 Inspect the meter name, serial number and firmware revision.
 Inspect Current Transformer (CT) values and parameters.
 Inspect key real time measurement values (only if connected to load).
 Perform firmware upgrades for MD-P1 and MD-P1D Power Meters.
Obtaining and Installing ViewPoint Software
The ViewPoint software is free to MD-P1 an MD-P1D Power Meter users. To download
and install the software:
1. Start Internet Explorer and navigate to http://www.dentinstruments.com/siemens/
2. Log in with User: siemens, password: mdpowermeter.
3. Click the <ViewPointInstaller_3> link.
4. Choose Save, and save the file to the location of your choice.
5. Open the file you saved from Step 4.
6. When asked if you want to run the software, click Run.
7. Click Install. (NOTE: A USB driver is installed when you install the ViewPoint
software).
8. Check or uncheck Run Viewpoint, Show Readme, or Create Desktop Shortcut as
desired.
9. Click Finish.
Connecting and Communicating via a USB Cable
It is recommended to use a Type AB USB cable between a personal computer and a
MD-P1 or MD-P1D Power Meter to set up the meter. The USB cable will also power
the meter when connected to a computer. When using a USB cable with a computer,
each USB port on the computer generates a unique comm port in the ViewPoint
software, such as Com3 or Com4 (see Figure 3.)
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Appendices
Appendix D - Monitoring and Servicing the MD-P1 and MD-P1D Model Power Meters
Commercially Available Examples: CablesToGo UPC 757120281023, Grainger
5XFV4, Best Buy SKU 9457928
A USB driver is installed when you install the ViewPoint software.
ViewPoint communicates with the MD-P1 or MD-P1D Power Meter through a USB
connection, using Modbus protocol in the service software communication with the
meter. The USB connector on the meter can be used to power the unit during
configuration.
Initial Meter Setup
Start ViewPoint software on your computer. Connect one end of the USB AB cable to
your computer’s USB port and one end to the MD-P1 or MD-P1D Power Meter’s USB
port on the side of the device (see Figure 3).
Once communication is established between the computer and the power meter, you
can configure the meter for the field. The Communications screen (upper left tab)
should display first.
Communications Screen
Figure 13: Communications Screen.
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Appendices
Appendix D - Monitoring and Servicing the MD-P1 and MD-P1D Model Power Meters
To upload the MD-P1 or MD-P1D Power Meter information into the ViewPoint
software:
1. From the pull down menu at the top right of this screen (Dec) PS24 select (Hex)
PS3/PS3037.
2. From the PC COM Port drop-down menu, select USB.
-
The screen will update, with less information available to match MD-P1 or MDP1D functionality.
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Appendices
Appendix D - Monitoring and Servicing the MD-P1 and MD-P1D Model Power Meters
3. Click the Connect button at the lower right corner of the screen.
-
The meter’s key data will be uploaded into the ViewPoint Service Software
Tool, displaying the connected meter’s data on this screen including:
 Model Number
 Meter Serial Number
 Meter Firmware Revision
-
The status box will contain information confirming valid connection to the
meter.
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Appendices
Appendix D - Monitoring and Servicing the MD-P1 and MD-P1D Model Power Meters
NOTE: There are no commands issued here, just data validation.
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Appendices
Appendix D - Monitoring and Servicing the MD-P1 and MD-P1D Model Power Meters
Meter Setup Screen
To verify the Current Transformer values that are pre-programmed as part of the
meter's application, click the Meter Setup tab at the top of the ViewPoint Service
software screen.
This screen may initially be mostly blank To upload your connected meter's CT
selections defined by its programmed application, click on the Retrieve Meter Setup
button at the bottom of the screen. The screen will update with information that is CTdependent. Below is an example of what the screen may look like:
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Appendices
Appendix D - Monitoring and Servicing the MD-P1 and MD-P1D Model Power Meters
There are three selections that must be verified on this screen:
1. Redefine the demand window, between 1 and 60 minutes by entering the desired
number of minutes into the Demand Window box at the top of the screen.
2. Change the frequency from 60 Hz to 50 Hz in the Line Frequency menu box at the
top of the screen.
3. Redefine a WYE, DELTA, or Single Phase wiring configuration for the meter by
clicking the correct button at the top of the screen.
• Siemens Industry recommends using three CTs in a WYE connection for Delta
loads.
•A WYE connection automatically displays all three CTs. Any changes made to CT1
also apply to CT2 and CT3.
•A Delta connection displays only the two available CTs. Any changes made to CT1
also apply to CT3.
• There are no other valid commands to be used here--just data display for
verification.
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Appendices
CAUTION
DO NOT attempt to change CT values from this screen.
CT values can only be updated by using the Siemens WCIS Programming Tool to
modify the MD-P1 Model Power Meter application number.
CAUTION
DO NOT CHANGE ANY VALUES IN THESE CT REGISTERS.
Updating CT values using ViewPoint software can make the power meter inoperable.
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Appendices
Appendix E - Installing Firmware Updates for the MD-P1 and MD-P1D Power Meter
Appendix E - Installing Firmware Updates for the MD-P1
and MD-P1D Power Meter
MD-P1 and MD-P1D Power Meter firmware updates are available from DENT
Instruments, typically contained in a Zip file that can be downloaded, unzipped and
installed using ViewPoint. The MD-P1 and MD-P1D Power Meters require ViewPoint
4.07 or later.
Check the DENT Instruments website for the latest version of firmware:
http://www.dentinstruments.com/downloads_data_logger_power_meter_drivers_softwar
e.html
Downloading and Installing Firmware
1. Download the Zip file containing the firmware. Extract the Zip file to a folder on the
computer.
2. Connect the computer to the MD-P1 or MD-P1D Power Meter using the USB port.
See Installing the ViewPoint Software and Communicating with the MD Model
Power Meter for additional information.
3. Select the Firmware tab in ViewPoint. Click Browse to locate the extracted
firmware files. Click Update to start the firmware update. See Using the ViewPoint
Software.
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Appendices
Appendix E - Installing Firmware Updates for the MD-P1 and MD-P1D Power Meter
When the update completes, ViewPoint displays a message window confirming a
successful update.
Comms Setup Screen
This ViewPoint screen is desined for use with MD-BM BACnet/Modbus style power
meters and is not applicable for the MD-P1 of MD-P1D Power Meter. It is strongly
recommended not to use this screen for these power meters.
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Appendices
Appendix E - Installing Firmware Updates for the MD-P1 and MD-P1D Power Meter
CAUTION
DO NOT make changes on this ViewPoint screen.
Doing so may make the MD-P1 or MD-P1D Power Meter inoperable. Contact
Siemens Technical Support for assistance before making meter register adjustments.
Verifying Installation with ViewPoint Software
In addition to verifying your connections with the PhaseChek LEDs on the front of the
meter, you can use the ViewPoint software to check connections. Any computer
running ViewPoint software can display information about the meter's real time values
for local verification of operation.
Real-Time Values Screen
Click on the Real-Time Values tab at the top of the ViewPoint screen to display current
measured values.
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Appendices
Appendix E - Installing Firmware Updates for the MD-P1 and MD-P1D Power Meter
The Real-Time Values screen shows current readings to verify that the system is
configured properly. The tables display the real-time values of Volts, Amps, Kw, KVA,
KVAR, and Power Factor (PF) for Phase L1, Phase L2, and Phase L3. This screen
also displays the CT type connected to the MD-P1 or MD-P1D Power Meter and the
CT value.
Values displayed for Volts, Amps, Kw, and so on should make sense; meaning that the
values in the table are relevant for the service being measured. This indicates the MDP1 or MD-P1D Power Meter setup is correct. It may also be useful to use a handheld
amp meter to test the current and compare its readings to the values provided on the
Real-Time Values screen.
To acquire new measurement values click Update to retrieve a new set of values for
the MD-P1 or MD-P1D Power Meter. For Auto-Update, select the checkbox to
automatically update values approximately every 20 seconds.
Using the Optional Visual Display to Verify Real-Time Values
(MD-P1D Model Only)
The MD-P1D Power Meter has a two line × 16-character backlit visual display that
enables you to read real-time values directly from the meter. It has two rows of 16
characters that auto cycle between informational screens every two to three seconds,
with real-time values updated every second. Click the Hold button (located on the side
of the meter) to stop the cycle until it is clicked again, or until a set timeout is reached.
Some information such as protocol, CT type, Volts, Aps, Kw, PF and so on, is
displayed during each cycle. See Appendix E for complete cycle information.
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Appendices
This Real-Time Values data is for data monitoring and verification only.
Read/Write Registers Screen
This ViewPoint screen is designed for use with MD-BMS BACnet/Modbus style meters,
and is not applicable for MD-P1 or MD-P1D Power Meters. It is strongly recommended
that you do not use these screens for these meters.
CAUTION
DO NOT make changes on this ViewPoint screen.
Doing so may make the MD-P1 or MD-P1D Power Meter inoperable. Contact
Siemens Technical Support for assistance before making meter register adjustments.
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Appendices
Appendix F - Measuring Consumption (kWh), Demand, and Other Applications
Appendix F - Measuring Consumption (kWh), Demand, and
Other Applications
The kWh reading has been split into two points to provide an accurate reading.
CONSUMPTN LO (Point 8) and CONSUMPTN HI (Point 9) are accumulators that
totalize kWh. The sum of CONSUMPTN LO and CONSUMPTN HI provides the total
accumulated kWh for all three phases. These points are always increasing and cannot
be reset or commanded to zero.
Calculating Total Consumption Example
Conceptually, total consumption for any time period is the difference between the
reading taken at the start of the time period and the reading taken at the end of the
time period. Use the following calculation technique to retain accuracy for calculating
total consumption. In this method, the difference (that is, end – start) for accumulator
points is taken before summation of the total consumption.
(HILAST – HISTART)
+
(LOLAST – LOSTART)
=
CONSUMPTIONPERIOD
January 99
(2620 – 1310)
+
(300 – 160)
=
1310 + 140 = 1450
February 99
(3920 – 2620)
+
(100 – 300)
=
1310 + (–200) = 1110
The following PPCL reads the MD-P1 and MD-P2 accumulators at the start of the
specified time period (for example, month, week, and day) and stores them in virtual
analog points. To calculate the consumption for a specified time period, a test is
conducted where the most recent (that is, last) accumulator value is tested against the
low accumulator reading taken at the start of the time period. The resulting calculated
value can be displayed on an Insight graphic to assist building operators in monitoring
the energy consumption in their facilities.
00010
C ENERGY MANAGEMENT PROGRAM TO CALCULATE MONTHLY, WEEKLY AND DAILY USAGE
00012
C
00030
C THIS SOFTWAWRE IS OWNED AND MAINTAINED BY SIEMENS BUILDING TECHNOLOGIES, INC.
00032
C ALL RIGHTS RESERVED. ANY MODIFICATIONS WITHOUT THE EXPRESS, WRITTEN
00034
C CONSENT FROM SIEMENS BUILDING TECHNOLOGIES, INC. MAY VOID THE WARRANTY.
00036
C
00040
C SEE DRAWING D#, PAGE P#, JOB zzz-#-####
00042
C FOR CONFIGURATION AND SEQUENCE OF OPERATION.
00044
C
00050
C VER DATE ENG/SPEC COMMENTS
00052
C A 06-13-2000 CSAL INITIAL PROGRAMMING
00054
C 0 ??-??-2000 CSAL RELEASED AND PUBLISHED
00198
C
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Appendices
Appendix F - Measuring Consumption (kWh), Demand, and Other Applications
00200
C PHYSICAL INPUTS
00202
C
00204
C\NAME FOR THE DEM HIGH ACC. VALUE IS (POINT 9) ........(PLAI,DEM:COMSUMPTN HI)\
DEM:CONSUMPTN HI\
00206
C\NAME FOR THE DEM LOW ACC. VALUE IS (POINT 8) ........(PLAI,DEM:COMSUMPTN LO)\
DEM:CONSUMPTN LO\
00208
C \NAME FOR THE DEM INSTANT DEMAND VALUE (POINT 10) ........ (PLAI,DEM:DEMAND)\
(PLAI,DEM:DEMAND)\DEM:DEMAND\
00210
C
00212
C VIRTUAL ANALOG OUTPUTS
00214
C
00216
C \NAME FOR THE HI ACC. READING (MONTH) .................(VLAO,CMH)\CMH\
00218
C \NAME FOR THE LO ACC. READING (MONTH) .................(VLAO,CML)\CML\
00220
C \NAME FOR THE HI ACC. READING (WEEKLY) .................(VLAO,CWH)\CWH\
00222
C \NAME FOR THE LO ACC. READING (WEEKLY) .................(VLAO,CWL)\CWL\
00224
C \NAME FOR THE HI ACC. READING (DAILY) .................(VLAO,CDH)\CDH\
00226
C \NAME FOR THE LO ACC. READING (DAILY) .................(VLAO,CDL)\CDL\
00228
C \NAME FOR THE CONSUMPTION FOR JANUARY .................(VLAO,JAN)\JAN\
00230
C \NAME FOR THE CONSUMPTION FOR FEBRUARY .................(VLAO,FEB)\FEB\
00232
C \NAME FOR THE CONSUMPTION FOR MARCH .................(VLAO,MAR)\MAR\
00234
C \NAME FOR THE CONSUMPTION FOR APRIL .................(VLAO,APR)\APR\
00236
C \NAME FOR THE CONSUMPTION FOR MAY .................(VLAO,MAY)\MAY\
00238
C\NAME FOR THE CONSUMPTION FOR JUNE .................(VLAO,JUN)\JUN\
00240
C \NAME FOR THE CONSUMPTION FOR JULY .................(VLAO,JUL)\JUL\
00242
C \NAME FOR THE CONSUMPTION FOR AUGUST .................(VLAO,AUG)\AUG\
00244
C \NAME FOR THE CONSUMPTION FOR SEPTEMBER .................(VLAO,SEP)\SEP\
00246
C \NAME FOR THE CONSUMPTION FOR OCTOBER .................(VLAO,OCT)\OCT\
00248
C \NAME FOR THE CONSUMPTION FOR NOVEMBER .................(VLAO,NOV)\NOV\
00250
C \NAME FOR THE CONSUMPTION FOR DECEMBER .................(VLAO,DEC)\DEC\
00252
C \NAME FOR THE CONSUMPTION FOR MONDAY .................(VLAO,MON)\MON\
00254
C \NAME FOR THE CONSUMPTION FOR TUESDAY .................(VLAO,TUE)\TUE\
00256
C \NAME FOR THE CONSUMPTION FOR WEDNESDAY .................(VLAO,WED)\WED\
00258
C \NAME FOR THE CONSUMPTION FOR THURSDAY .................(VLAO,THU)\THU\
00260
C \NAME FOR THE CONSUMPTION FOR FRIDAY .................(VLAO,FRI)\FRI\
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Appendices
Appendix F - Measuring Consumption (kWh), Demand, and Other Applications
00262
C \NAME FOR THE CONSUMPTION FOR SATURDY .................(VLAO,SAT)\SAT\
00264
C \NAME FOR THE CONSUMPTION FOR SUNDAY .................(VLAO,SUN)\SUN\
00266
C \NAME FOR THE CONSUMPTION FOR WEEK .................(VLAO,WEK)\WEK\
00984
C
00986
C ------- SET UP THE NAME OF THE MECHANICAL SYSTEM-------
00988
C APOGEE INSTRUCTIONS: REPLACE %X% WITH MECHANICAL SYSTEM. THE Y AND Z
00990
C DEFINE STATEMENTS ARE FOR THE ACTUAL POINTS IN THE DEM DEVICE.
00992
C NON-APOGEE PANEL: DELETE OR “COMMENT OUT” LINES 1000-1020 AND
00994
C USE “SEARCH AND REPLACE” TO CHANGE %X% TO MECHANICAL SYSTEMS AND
00996
C REPLACE %Y% AND %Z% WITH THE DEM APPLICATION POINTS.
00998
C
01000
DEFINE(X,”%X%”)
01010
DEFINE(Y,”DEM:CONSUMPTN HI”)
01020
DEFINE(Z,”DEM:CONSUMPTN LO”)
01988
C
01990
C ------- MONTHLY CONSUMPTION -------
01992
C IF IT IS THE FIRST DAY OF THE MONTH AND THE TIME IS 12:00AM,
01994
C THEN SET THE VIRTUAL METER CONSUMPTION POINTS EQUAL TO THE
01996
C ACTUAL DEM VALUES. OTHERWISE, SKIP AND CALCULATE THE MONTHLY VALUE.
02000
IF (DAYOFM .EQ. 1 .AND. CRTIME .EQ. 0.0) THEN GOTO 2010 ELSE GOTO 3000
02010
“%X%CMH” = “%Y%”
02020
“%X%CML” = “%Z%”
02994
C
02996
C CALCULATE THE PROPER MONTH
02998
C
03000
IF (MONTH .NE. 1) THEN GOTO 3020
03010
SAMPLE(60) “%X%JAN” = (“%Y%” – “%X%CMH”) + (“%Z%” – “%X%CML”)
03020
IF (MONTH .NE. 2) THEN GOTO 3040
03030
SAMPLE(60) “%X%FEB” = (“%Y%” – “%X%CMH”) + (“%Z%” – “%X%CML”)
03040
IF (MONTH .NE. 3) THEN GOTO 3060
03050
SAMPLE(60) “%X%MAR” = (“%Y%” – “%X%CMH”) + (“%Z%” – “%X%CML”)
03060
IF (MONTH .NE. 4) THEN GOTO 3080
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03070
SAMPLE(60) “%X%APR” = (“%Y%” – “%X%CMH”) + (“%Z%” – “%X%CML”)
03080
IF (MONTH .NE. 5) THEN GOTO 3100
03090
SAMPLE(60) “%X%MAY” = (“%Y%” – “%X%CMH”) + (“%Z%” – “%X%CML”)
03100
IF (MONTH .NE. 6) THEN GOTO 3120
03110
SAMPLE(60) “%X%JUN” = (“%Y%” – “%X%CMH”) + (“%Z%” – “%X%CML”)
03120
IF (MONTH .NE. 7) THEN GOTO 3140
03130
SAMPLE(60) “%X%JUL” = (“%Y%” – “%X%CMH”) + (“%Z%” – “%X%CML”)
03140
IF (MONTH .NE. 8) THEN GOTO 3160
03150
SAMPLE(60) “%X%AUG” = (“%Y%” – “%X%CMH”) + (“%Z%” – “%X%CML”)
03160
IF (MONTH .NE. 9) THEN GOTO 3180
03170
SAMPLE(60) “%X%SEP” = (“%Y%” – “%X%CMH”) + (“%Z%” – “%X%CML”)
03180
IF (MONTH .NE. 10) THEN GOTO 3200
03190
SAMPLE(60) “%X%OCT” = (“%Y%” – “%X%CMH”) + (“%Z%” – “%X%CML”)
03200
IF (MONTH .NE. 11) THEN GOTO 3220
03210
SAMPLE(60) “%X%NOV” = (“%Y%” – “%X%CMH”) + (“%Z%” – “%X%CML”)
03220
IF (MONTH .NE. 12) THEN GOTO 4000
03230
SAMPLE(60) “%X%DEC” = (“%Y%” – “%X%CMH”) + (“%Z%” – “%X%CML”)
03988
C
03990
C ------- DAY OF WEEK CONSUMPTION -------
03992
C IF IT IS 12:00 AM, THEN SET THE VIRTUAL METER CONSUMPTIION
03994
C POINTS EQUAL TO THE ACTUAL DEM VALUES. OTHERWISE, SKIP AND
03996
C CALCULATE THE DAILY VALUE.
03998
C
04000
IF (CRTIME .EQ. 0.0) THEN GOTO 4010 ELSE GOTO 5000
04010
“%X%CDH” = “%Y%”
04020
“%X%CDL” = “%Z%”
04994
C
04996
C CALCULATE THE PROPER DAY.
04998
C
05000
IF (DAY .NE. 1) THEN GOTO 5020
05010
SAMPLE(60) “%X%MON” = (“%Y%” – “%X%CDH”) + (“%Z%” – “%X%CDL”)
05020
IF (DAY .NE. 2) THEN GOTO 5040
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05030
SAMPLE(60) “%X%TUE” = (“%Y%” – “%X%CDH”) + (“%Z%” – “%X%CDL")
05040
IF (DAY .NE. 3) THEN GOTO 5060
05050
SAMPLE(60) “%X%WED” = (“%Y%” – “%X%CDH”) + (“%Z%” – “%X%CDL”)
05060
IF (DAY .NE. 4) THEN GOTO 5080
05070
SAMPLE(60) “%X%THU” = (“%Y%” – “%X%CDH”) + (“%Z%” – “%X%CDL”)
05080
IF (DAY .NE. 5) THEN GOTO 5100
05090
SAMPLE(60) “%X%FRI” = (“%Y%” – “%X%CDH”) + (“%Z%” – “%X%CDL”)
05100
IF (DAY .NE. 6) THEN GOTO 5120
05110
SAMPLE(60) “%X%SAT” = (“%Y%” – “%X%CDH”) + (“%Z%” – “%X%CDL”)
05120
IF (DAY .NE. 7) THEN GOTO 6000
05130
SAMPLE(60) “%X%SUN” = (“%Y%” – “%X%CDH”) + (“%Z%” – “%X%CDL”)
05998
C
05990
C ------- WEEKLY CONSUMPTION -------
05992
C IF IT IS THE LAST DY OF THE WEEK AND IT IS 12:00 AM, THEN SET THE
05994
C VIRTUAL METER CONSUMPTION POINT EQUAL TO THE ACTUAL DEM VALUES.
05996
C OTHERWISE, SKIP AND CALCULATE THE WEEKLY VALUE.
05998
C
06000
IF (DAY .EQ. 7.0 .AND. CRTIME .GE. 23.99) THEN GOTO 6010 ELSE GOTO 7000
06010
“%X%CWH” = “%Y%”
06020
“%X%CWL” = “%Z%”
06994
C
06996
C CALCULATE THE PROPER WEEK.
06998
C
07000
SAMPLE(60) “%X%WEK” = (“%Y%” – “%X%CWH”) + (“%Z%” – “%X%CWL”)
10000
GOTO 1000
Another variation of these applications is to create a PPCL which captures energy
consumption (for example, daily, hourly) in a single virtual point. This virtual point can
be trended and building operators can use the Insight Dynamic Plotter to monitor
dynamic and/or historical energy consumption.
NOTES:
1. The slope and intercepts of %X%CMH and %X%CML are the same as
accumulator points (%Z%, %Y%).
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2. The slope (that is, resolution) for monthly readings should be determined by
identifying the maximum billed consumption or using the following equations
(assume PF = 1.0):
kWref = (CTref. Amps × Voltsref)/1000
for 1-Phase Power
kWref = (CTref. Amps × Voltsref × SQRT(3) × PF)/1000 for 3-Phase Power
kWh = kWref * 24 hours/day × 31 Days
for kWh per Month
kWh = kWref * 24 hours/day × 7 Days
for kWh per Week

For firmware revisions earlier than 2.0, do not use the $LOC resident point for
intermediate calculations; the maximum value of the $LOC resident point is 32,767.
Maximum
Physical Unit (V2)
Slope
(Resolution)
Intercept
(V1)
32,766.00
1
0
327,660.00
10
0
163.83
0.05
0
1638.30
0.5
0
163,830
5
0
1,638,300
50
0
32,766.00
1
0
Measuring and Calculating Demand (kW)
DEMAND represents the instantaneous 3-phase total demand (kW) and functions as a
logical analog input. In applications where the demand fluctuates, increase the COV
parameter for DEMAND to reduce COV traffic. If the power meter is reading whole
building kW, the largest number of COVs occurs when the building transitions from
unoccupied to occupied status. For example, using a 300A power meter with a COV
limit of 0.064 results in changes of values being observed for every change greater
than 0.064 kW (such as every time a 1.0 HP motor, one 100W light bulb, or a personal
computer is energized).
In general, select the COV for the kW based on the range of the CT. For example, if a
1% COV is needed for a 300 Amp service (300 Amps × Sqrt (3) × 480V/1000 = 249.6
kW ), select a COV of the slope × 20 (provides a COV every 0.064 slope × 20 kW =
1.28 kW). Unless a very high resolution is required, a COV limit of slope × 20 is
adequate for most applications.
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Appendix F - Measuring Consumption (kWh), Demand, and Other Applications
The following table lists kW loads for various motor horsepower ratings:
Horsepower
kW
Horsepower
kW
1
0.746
10
7.46
2
1.49
25
18.86
5
3.73
50
37.3
Trending Data
If scheduling trend data at the Insight workstation, schedule data collection at regular
intervals. Size the field panel trend definition appropriately to prevent trend data from
being lost due to roll over. Select the number of samples based on field panel memory
and network traffic limitations. It is possible to upload trend data to the workstation
using the full trend buffer option or by a scheduled collection time.
Collecting Energy Data
Many methods can be used to collect data for energy monitoring, reporting, and
controlling applications. These methods vary based on intended application, desired
accuracy, and field panel memory requirements. The best tradeoff between accuracy
and field panel memory requirements is to trend the kWh values every 15 minutes
(trend both CONSUMPTN LO and CONSUMPTN HI points). Use this data to calculate
total consumption for various time-of-use periods and also to calculate the average
demand over a 15-minute period. In this case, DEMAND is used for only real-time load
monitoring applications (graphics, alarming, and so on) and does not need to be
trended. Applications requiring greater accuracy for demand billing or allocation
purposes can collect peak demand calculations with timestamps using the rolling or
fixed demand methods. In projects where field panels have severe memory limitations,
the 15-minute interval can be extended to 30 or 60 minutes with generally acceptable
results.
Peak Demand Limiting
Electric utilities base their charges to commercial users on a combination of total
electricity used during the billing period (known as consumption, kWh and the peak
electrical demand required to meet the need of the facility (known as demand, kW).
The utility determines the demand charge of a facility by continually measuring
electricity usage for successive short time intervals (usually 15 minutes). The highest
demand (average kW) during one of these intervals becomes the basis for the demand
charges. Since 40% or less of an electric bill can be based on demand charge, it is
beneficial to limit the peak electrical demand of the facility.
The following PPCL can be used for peak demand limiting applications:
00010
C ELECTRIC SUBMETER
00012
C THE SYSTEM WILL BE DDC CONTROLLED USING ELECTRIC ACTUATION.
00014
C NOTICE: ALL ACTUATORS ARE SET UP IN THE PROGRAM TO WORK AS 0% - 100%
00016
C
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00018
C PROGRAM WARRANTY
00020
C \WHAT ARE YOUR INITIALS ? (III)\III\
00022
C \WHAT IS TODAYS DATE (MM-DD-YY) \XX-XX-XX\
00024
C \WHAT IS THE JOB # (E-1111)\#-####\
00026
C \WHAT PAGE # DOES THE PROGRAM GO WITH ? (P#)\P#\
00028
C \WHAT IS THE DRAWING # FOR THIS PROGRAM ? (D#)\D#\
00030
C \WHAT IS THE SYSTEM NAME AND NUMBER? (SYSS)\SYSS\
00032
C
00034
C THIS SOFTWARE IS OWNED AND MAINTAINED BY SIEMENS BUILDING TECHNOLOGIES, INC.
00036
C ALL RIGHTS RESERVED. ANY MODIFICATIONS WITHOUT THE EXPRESS, WRITTEN
00038
C CONSENT FROM SIEMENS BUILDING TECHNOLOGIES, INC. MAY VOID THE WARRANTY.
00040
C
00042
C SEE DRAWING D#, PAGE P#, JOB zzz-#-####
00044
C FOR CONFIGURATION AND SEQUENCE OF OPERATION.
00046
C
00048
C VER DATE ENG/SPEC COMMENTS
00050
C A 07-20-98 CSAL INITIAL PROGRAMMING
00052
C 0 11-30-98 CSAL PROGRAM TESTED AND COMPLETED MODIFICATIONS
00098
C
00100
C PHYSICAL INPUTS
00102
C
00104
C \NAME FOR THE DEM INSTANT DEMAND VALUE (POINT 10) ........ (PLAI,DEM:DEMAND)\
(PLAI,DEM:DEMAND)\DEM:DEMAND\
00106
C
00108
C VIRTUAL ANALOG OUTPUTS
00110
C
00112
C \NAME FOR THE PEAK DEMAND LIMIT SET POINT 1 ...............(VLAO,SP1)\SP1\
00114
C \NAME FOR THE PEAK DEMAND LIMIT SET POINT 2 ...............(VLAO,SP2)\SP2\
00116
C \NAME FOR THE METER DEMAND (KW) IS ...... ..................(VLAO,KW)\KW\
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00118
C \NAME FOR THE METER AREA IS ..................... ..........(VLAO,ARE)\ARE\
00120
C \NAME FOR THE HISTORICAL FORECAST IS ................ ........(VLAO,HST)\HST\
00122
C \NAME FOR THE CALCULATION INTERVAL IS ............... ........(VLAO,CLC)\CLC\
00124
C \NAME FOR THE SLIDING WINDOW INTERVAL IS ....................(VLAO,WND)\WND\
00126
C \NAME FOR THE PLOT SECTION (TIME VS. DEMAND) ............(VLAO,PLT)\PLT\
00128
C \NAME FOR THE END TIME OF PEAK DEMAND LIMIT 1 IS .......(VLAO,TM1)\TM1\
00130
C \NAME FOR THE END TIME OF PEAK DEMAND LIMIT 2 IS ........(VLAO,TM2)\TM2\
00132
C \NAME FOR TOTAL KW AVAILABLE FOR PDL STATEMENT ......(VLAO\KW1)\KW1\
00134
C \NAME FOR PDL STATEMENT TARGET .................. ............(VLAO\TG1)\TG1\
00136
C
00138
C VIRTUAL DIGITAL OUTPUTS
00140
C
00142
C \NAME FOR THE OUTPUT POINT FOR EXCEEDING THE DEMAND LIMIT ...(VLDO,EX)\EX\
00984
C
00986
C-------SET UP THE NAME OF THE MECHANICAL SYSTEM-------
00988
C APOGEE INSTRUCTIONS: REPLACE %X% WITH MECHANICAL SYSTEM.
00990
C NON-APOGEE PANEL: DELETE OR "COMMENT OUT" LINE 1000 AND
00992
C USE "SEARCH AND REPLACE" TO CHANGE %X% TO MECHANICAL SYSTEM
00994
C NAME (MAXIMUM OF 3 CHARACTERS) IN THE PROGRAM.
00996
C NOTE: BRIEF: TOGGLE REGULAR EXPRESSIONS OFF (CNTRL F6) TO FIND %.
00998
C
01000
DEFINE(X,”%X%”)
01010
DEFINE(U,”DEM:DEMAND”)
01094
C
01096
C SUBMETER ACTUAL READING
01098
C
01100
%X%KW = $PDL
01194
C
01196
C MONITOR OF THE SUBMETER
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01198
C
01200
PDLMTR (”%X%ARE”, ”%X%HST”, ”%X%CLC”, ”%X%WND”, ”%X%PLT”,0,”%U%”,-1)
01294
C
01296
C SET THE DEMAND LIMIT
01298
C
01300
PDLSET(”%X%ARE”, ”%X%EX”, ”%X%SP1”, ”%X%TM1”, ”%X%SP2”, ”%X%TM2”)
01394
C
01396
C POWER CONSUMPTION TARGETS
01398
C
01400
PDLDPG(”%X%ARE”, ”%X%KW1”, ”%X%TG1”)
10000
GOTO 1000
The PDLMTR statement can use a demand (for example kW, kVa) from the power
meter for peak demand limiting applications. The summation of power meter
accumulator (HI and LO) points should not be used for peak demand limiting
applications due to summation round-off error in analog point.
You can use the power meter in the APOGEE Peak Demand Limiting (PDL)
Application to gain this benefit. For more information on the PDL application, see the
APOGEE Field Panel User’s Manual (125-3000).
Data Reliability
Many power meter/field panel applications require “high data reliability”. This means
that trend data collection must be configured to reduce the risk of data loss. To reduce
the risk of data loss, schedule trend data collection for regular intervals (for example,
every two hours) or use the Trend Buffer Full option to upload trend data to the Insight
workstation. To facilitate long-term data collection, schedule trend data conversions
daily at the Insight workstation in order to store trend data in the .CSV file format on
hard disk. At a later date, the .CSV files can be imported into a report application to
develop load profiles, cost allocation, or tenant billing reports.
Power Failure
On power failure, the power meter retains the last observed kWh value in nonvolatile
memory. All other values are instantaneous in nature and not stored during power
failure.
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Frequently Asked Questions - FAQs
Glossary
Frequently Asked Questions - FAQs
One (or more) of the phase verification LEDs is red. What does this mean?
Any number of red lights indicates the MD-P1 or MD-P1D Power Meter are wired
incorrectly. Review the table in the Phase Verification section of this manual for a
description of the indicator lights.
How are the MD-P1 and MD-P1D Power Meters powered?
The MD-P1 and MD-P1D Power Meters are line-powered. An internal power supply
attached between L1 and L2 provides power to the units. Power lines are internally
fused.
Can the MD-P1 and MD-P1D Power Meters be used to monitor single-phase loads?
The MD-P1 and MD-P1D Power Meters can be used to monitor single-phase loads.
See the Installation section for detailed setup information.
How many MD-P1 or MD-P1D Power Meters can be connected together?
Up to 20 MD-P1 or MD-P1D Power Meters can be connected together on a P1 FLN
network.
How is hexadecimal (HEX) to decimal converted?
Use the Decimal to Hexadecimal Conversion table in Appendix A of this manual. Meter
addressing is in hexadecimal.
What is true RMS?
RMS stands for "Root-Mean-Square." True RMS is the power from AC voltage/current
that will produce the equivalent amount of heat in a resistor as a DC voltage/current,
whether sinusoidal or not. For example, if a resistive heating element is rated at 15 kW
of heat at 240 Vac RMS, then the heat would be the same if we applied 240V of DC
instead of AC. A meter without true RMS will incorrectly read distorted waveforms.
How accurate are the MD-P1 and MD-P1D Power Meters?
The MD-P1 or MD-P1D Power Meter’s accuracy is better than 1%.
What is the lead length for Rogowski Coil CTs?
The maximum lead length for the Rogowski Coils is 100 feet (30 meters).
How do I update the firmware?
Currently, the MD-P1 and MD-P1D Power Meters must be in USB mode to use
ViewPoint to update the firmware (either through the software switch or the rotary
switches). See Appendix E.
Glossary
Word
Description
Amp Multiplier
A multiplier that changes amperage so that a meter can read higher
measurements.
Analog Value
A type of BACnet object that is a floating point number. On the MD-P1
and MD-P1D Model Power Meters, Analog Value objects are used to
represent the electrical measurements.
BACnet
Building Automation Control networks. A communications protocol that
allows building automation and control devices and their association
properties (objects) to be automatically discovered.
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Frequently Asked Questions - FAQs
Glossary
Word
Description
CAM
Clear All Measurements
Data Scalar
A scalar is used to multiply the raw data value to convert information
read from the registers
Demand Window
The Demand Window is how long the meter calculates your demand
for recording a value. For example if your Demand Window is set to 15
minutes, the meter will calculate your total demand every minute for 15
minutes. At the end of the 15 minutes it will sum all 15 values, and then
record that value as the demand.
Digital Output
The MD-P1 and MD-P1D Power Meters have an output port. The port
can be used to output kWh, kVARh,or kVAh pulses to external devices,
or to toggle on and off to control a remote device or relay.
Discovery
In BACnet, devices and the objects they expose can be found through
a discovery process. This means that devices and objects do not need
to be manually added if a BACnet client supports discovery.
Falling edge
Transition of the input signal from high to low.
Hexadecimal
In mathematics and computer science, hexadecimal (or hex) is a
numeral system with a radix, or base, of 16. It uses sixteen distinct
symbols, most often the symbols 0 to 9 to represent values zero to
nine, and A, B, C, D, E, F (or a through f) to represent values ten to
fifteen.
kVAh
Kilovolt-Ampere Hour
kVARh
Kilovolt Ampere Reactive Hours
kWh
Kilowatt Hour
LSW
(Modbus mode only) Least Significant Word. Unit of data with the loworder bytes at the right.
MS/TP
Master-Slave/Token Passing is a model of communication used by
BACnet where one device (the master node) has unidirectional control
of the RS-485 serial bus. The token is passed from master node to
master node to allow a master node to send frames over the bus.
MSW
(Modbus mode only) Most Significant Word. Unit of data with the highorder bytes at the left.
Net
When a register/object has the word “net” in its description, the net
equals the sum of all individual signed measurements.
Object
A BACnet object is a standard data structure that on the MD Model
Power Meter represents electrical measurements.
Power Factor
The power factor of the AC electric power system is defined as the
ratio of the real power flowing to the load to the apparent power, and is
a number between 0 and 1 (frequently expressed as a percentage, for
example, 0.5 pf = 50% pf). Real power is the capacity of the circuit for
performing work in a particular time. Apparent power is the product of
the root mean squared current and root mean squared voltage of the
circuit. Due to energy stored in the load and returned to the source, or
due to a non-linear load that distorts the wave shape of the current
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Frequently Asked Questions - FAQs
Glossary
Word
Description
drawn from the source, the apparent power can be greater than the
real power.
Pulse Input
Used for counting, accumulating, and scaling pulses received from
non-DENT external pulse initiating meters such as gas, water, or other
electrical meters.
Pulse Output
Pulse output is used to generate pulses for external devices such as
data loggers that can accept pulses. The MD-P1 and MD-P1D Power
Meters can generate pulses based on accumulated value(s) such as
system kWh, system kVARh, and system kVAh.
Rising edge
Transition of the input signal from low to high.
RMS
Root-Mean-Square. True RMS is the AC voltage/current that produces
the equivalent amount of heat in a resistor as a DC voltage/current,
whether sinusoidal or not. The MD Model Power Meter measures true
RMS.
RS-485
EIA-485 is used as the physical layer underlying many standard and
proprietary automation protocols used to implement Industrial Control
Systems, including BACnet/Modbus/P1.
RTU
A Remote Terminal Unit (RTU) is a microprocessor controlled
electronic device which interfaces objects in the physical world to a
distributed control system, or a SCADA system by transmitting
telemetry data to the system and/or altering the state of connected
objects based on control messages received from the system.
SCADA
Supervisory Control And Data Acquisition. It generally refers to an
industrial control system: a computer system monitoring and controlling
a process.
Service
A BACnet service is a message that the MD-P1 and MD-P1D Power
Meters must respond to. In BACnet these include WhoIs, I-Am, and
ReadProperty.
Volts Multiplier
A multiplier that changes voltage so that a meter can read
measurements higher than 600V.
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Issued by
Siemens Industry, Inc.
Building Technologies Division
1000 Deerfield Pkwy
Buffalo Grove IL 60089
Tel. +1 847-215-1000
Document ID
125-201
Edition
2014-09-19
© 2014 Copyright Siemens Industry, Inc.
Technical specifications and availability subject to change without notice.
125-201(AA)
MD-P1 and MD-P1D Model Power Meters