Download m20 shaft – general overview and set

M20 Shaft Power Monitor
PRODUCT TRAINING
Topics
1.
What is an M20 Shaft Power Monitor
2.
How does it measure Shaft HP
3.
Benefits of Shaft Power measurement
4.
Competing technologies
5.
Features
6.
M20 Installation and Setup
7.
Limitations
8.
Conclusion
Fundamentals
• More than 500,000 Emotron monitors installed worldwide
• Emotron has been manufacturing Load Monitors longer than any other company
• 62% of Emotron’s Monitors are installed to Pumps
• The only monitor to measure shaft power (BHP)
• The only monitor to have automatic setup (AutoSet)
What is an M20?
What is an M20?
“An electronic system that monitors the Shaft HP of a motor and provides
protection against abnormal process conditions - using the motor as a sensor”
To detect abnormal conditions here
We measure “shaft power” here
How does the M20 measure Shaft HP?
SHAFT POWER (HP)
MOTOR POWER LOSSES
MOTOR POWER IN
SHAFT POWER = POWER IN – POWER LOSSES
Motor Losses
Where do the losses come from and how big are they?
Magnetic losses
Fan (Windage)
Electrical losses
Many motors are only 70 to 80%
efficient due to these losses.
Bearing friction
The M20 continually calculates these
losses and subtracts them from the
measured motor input power.
Benefits of measuring Shaft HP?
• Manufacturers typically express load data in BHP not Input Power, e.g., Pump Curve
• The varying losses of the motor are discounted
• Improved accuracy & reliability
• Protection parameters are set against the working load only
• The HP displayed is the ‘actual’ HP required by the application
• The displayed BHP can be useful when looking at the pump curve
Other features – Displayed Data
Window 01 – Motor Load
Window 02 – Motor Supply Voltage
Either:
• HP
• HP%
Window 03 – Motor Operating Amps
• kW
• kW%
Window 04 – Locks all settings
Other features – Analog Output
Can be set for either:
0-20 mA
4-20 mA
20-0 mA
20-4 mA
Competing technologies
Examples of technologies available to measure Motor Load
Load Controls PMP-25
Integra Motor Minder
Unipower HPL 420
Current Monitoring (Integra)
Pro’s
•Simple
•Low Cost
Con’s
• Only Effective if Motor is Loaded at 70-80%
• Better for Overload than Underload
AMPS
AMPS
LOAD
60-70%
Motor Input Power Monitoring
Pro’s
•Accurate measurement of load to motor
•Detects Overload and Underload
•Works well on lightly loaded motors
Con’s
•Does not consider motor losses
AMPS
•Does not determine actual BHP
• Load Controls is mounted externally
and can lead to unintended tampering
VOLTS
POWER
LOAD
M20’s key features
 Shaft power measurement*
 Four levels of protection*
 Autoset*
 Derives supply from Line Voltage*
 Electronic locking of parameters*
 Smallest footprint of any power monitor available*
 Readout of HP, %HP, kW, %kW, Volts and Amps*
 Programmable relay configurations
 Just three models cover all motor voltages up to 690 VAC
 Medium voltage (up to 6900V) applications with special Transformer*
 Programmable analogue signal proportional to the motors shaft power*
 Motors up to 800 HP can be monitored
 Remote Reset / AutoSet / Pre-Alarm blocking input *
* Unique features
Reliable and simple protection of a Mag Drive Pump
Shaft Power
90%
74%
Time
Response Delay
Examples of abnormal pumping conditions detected by M20
Closed suction valve – Underload
Dry running – Underload (or overload)*
Dead Heading – Underload (or overload)*
Cavitation – Underload & Overload
Blocked impeller – Overload
Bad Bearings – Overload
Worn Impeller – Underload
Plugged Filter – Underload (or overload)*
* Pump specific
Typical pump types that can be monitored
Mag Drive Lobe
Centrifugal
Mag Drive Centrifugal
Progressive Cavity
Gear (Positive Displacement)
How to determine Part Numbers
M20 …
There are just three M20 models to choose from ……
Description / Motor Supply Voltage
Part Number
M20 / 1 x 100-240 and 3 x 100-240 VAC
01-2520-20
M20 / 3 x 380-500 VAC
01-2520-40
M20 / 3 x 525-690 VAC
01-2520-50
Current Transducers …
There are just four CT’s to choose from ……
Motor FLA
0.1 – 10 Amps
10.1 – 25 Amps
25.1 – 50 Amps
CTM 010
CTM 025
CTM 050
CTM 100
X
X
X
50.1 – 100 Amps
For applications that are greater than 100 Amps FLA, please contact H2flow Controls
X
M20 - Mounting options
NEMA 4X Enclosure
Note:
When the M20 is installed in the NEMA 4X
enclosure, the Current Transducer cannot
be installed more than 6 cable feet from it
M20 - Mounting options
Panel Mount Kit
M20 electrical installation
START
Control Voltage
R1 (terminal 7) = Main alarm for
overload and / or underload
STOP
K1 Auxiliary Contact
Analogue output:
4 - 20 mA
20 – 4 mA
0 – 20 mA
20 – 0 mA
(Programmable)
1
2 3 4
01
Remote Reset /
AutoSet
5
6
7
R2 (terminal 8) = Pre-Alarm for
overload and / or underload
8
35
%
Pre-Alarm
9
11
13
Control Voltage common
K1 (Motor Starter)
Current
Transformer
L1
L2
L3
M
3~
Setting up a M20 ….
M20 - Set up
1.
Set the unit of measurement (HP, HP%, kW or kW%)
2.
Set the M20’s function
3.
Program the motor HP and Full Load amps
4.
Set the motor start delay
5.
Set the trip response delay
6.
Set the M20 for single or 3 phase operation
7.
Set up the relay logic
8.
Start the pump and apply normal load
9.
Press Autoset
10. Adjust trip points manually if required
Step 1.
- Set the unit of measurement:
Options:
HP
• HP
• %HP
• kW
%
AutoS
et
Reset
+
Next
Enter
• %kW
Press these two buttons simultaneously until the desired
unit of measurement is displayed.
Step 2.
- Set the M20’s function:
Options:
• Overload with Pre-Alarm
05
• Underload with Pre-Alarm
• Overload & Underload with Pre-Alarm
Note: For most Centrifugal Pumps, it is best to set the M20
for ‘Underload with Pre-Alarm’
In Window 05, select the monitors function:
Overload with Pre-Alarm
Underload with Pre-Alarm
Overload & Underload
With Pre-Alarms
Step 3.
- Set the Motor’s HP rating:
5.0
41
From the motors nameplate, set in Window 41 - the motors HP rating
Step 4.
- Set the Motor’s Full Load Current:
42
6.5
From the motor’s nameplate, set in Window 42 - the motors Full Load Current
Step 5.
- Set the Motor Start Delay timer:
2.0
31
In Window 31, set the motors start delay timer:
(adjustable from 1 to 999 seconds)
Step 6a.
- Set the Min Alarm Response Delay timer:
Alarm level
(Window 14)
3.0
34
Alarm
Min Alarm Response Delay (34)
In Window 34, set the Min Alarm Response delay timer:
(adjustable from 0.1 to 90 seconds). Once the load drops below the alarm set point, this timer will
start. At the end of the delay, the M20’s main alarm relay will trip. For most Mag Drive Centrifugal
Pumps, a time of 2 to 3 seconds is reasonable.
Step 6b.
- Set the Max Alarm Response Delay timer:
Alarm
3.0
Alarm level (11)
32
Max Alarm Response Delay ( 32)
In Window 32, set the Min Alarm Response delay timer:
(adjustable from 0.1 to 90 seconds). Once the load drops below the alarm set point, this timer will
start. At the end of the delay, the M20’s main alarm relay will trip. For most Mag Drive Centrifugal
Pumps, a time of 2 to 3 seconds is reasonable.
Step 7.
- Set M20 for Single or Three Phase Motor Supply:
3 PH
43
In Window 43, set the M20 to operate on either a single or 3 phase supply
Step 8a.
- Set the R1 to Latched or Unlatched:
ON
61
In Window 61, set R1 to either Latched (ON) unlatched (OFF). For most
control wiring configurations, this should be set to (ON).
Step 8b.
- Set the Relay configuration (R1):
NC
63
In Window 63, set R1 to either normally open (NO) or normally closed (NC).
Step 8c.
- Set the Relay configuration (R2):
NC
64
In Window 64, set R2 to either normally open (NO) or normally closed (NC)
Step 9.
- Activate the AutoSet procedure:
a) Start the pump
b) Run the Pump with all valves open
and the in a ‘normal’ condition. Press
the AutoSet key for 3-seconds until the
word Set appears in the display
Step 10.
- Manually adjust Alarm set points if necessary:
a) Create an “abnormal” condition, e.g., close a suction
valve and confirm an underload alarm is activated.
b) If necessary, manually adjust the Alarm levels.
Window 14 is the Main Underload Alarm level.
Window 13 is the Pre-Alarm Underload level.
Summary
M20 Limitations
• Application must be driven by an AC Induction Motor
• Monitoring VFD driven applications must be viewed with care
• Motors larger than 800 HP cannot be monitored
• A M20 must be used for each motor
• M20 must be installed within 6 feet of Current Transducer
M20 – Conclusion
Most advanced load monitor available
Smallest load monitor available
Only monitor to offer shaft power measurement
Only monitor to offer Autoset
Emotron has supplied more monitors than any other company
More than 500,000 Emotron monitors in the market
Emotron monitors have been around longer than any other monitors
H2flow Contact Information
Technical:
Inside Sales / Ordering
Order Status
Ken Schmanski
Carol McKenzie
Rich Griffith
[email protected]
[email protected]
[email protected]
C: 314-604-6690
Tel: 419-464-9502
Tel: 419-724-2344
Web: www.h2flow.net
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