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Grid-tie Transformerless Solar Inverter
M80U
M60U
Operation and Installation Manual
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Table of Contents
1　Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 08
1.1　Information of the Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 08
1.1.1
Legal Provisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 08
1.1.2
1.2　1.2.1
Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 08
General Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 09
Condition of Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 09
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2　Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.1　Valid Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
1.2.2
Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3　Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.1　Mechanical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.2　Electrical Installation for AC Wiring . . . . . . . . . . . . . . . . . . . . . . . . 25
2.2　3.2.1
3.2.2
3.2.3
3.3　3.3.1
3.3.2
3.3.3
3.3.4
3.3.5
3.4　3.4.1
3.4.2
Required Protective Devices and AC Wiring Installation for M80U_120 / M60U_120 . . . 26
Required Protective Devices and AC Wiring Installation for M80U_121 / M60U_121 . . . 28
Required Protective Devices and AC Wiring Installation for M80U_122 / M60U_122 . . . 30
Electrical Installation for DC Wiring . . . . . . . . . . . . . . . . . . . . . . . . 32
DC Wiring Installation for M80U_120 / M60U_120 . . . . . . . . . . . . . . . . . 32
DC Wiring Installation for M80U_121 / M60U_121 . . . . . . . . . . . . . . . . . 35
DC Wiring Installation for M80U_122 / M60U_122 . . . . . . . . . . . . . . . . . 37
Grounding bar for M80U_120 / M60U_120　. . . . . . . . . . . . . . . . . . . . . 39
Grounding bar for M80U_122 / M60U_122 . . . . . . . . . . . . . . . . . . . . . 40
Communication Module Connections . . . . . . . . . . . . . . . . . . . . . . . 41
Accessing the Communication Module . . . . . . . . . . . . . . . . . . . . . . 42
RS-485 Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
EPO Function & Digital Input . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
3.4.4
Dry Contact connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
4　Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
3.4.3
4.1　4.2　4.2.1
4.2.2
4.2.3
4.2.4
4.2.5
4.2.6
4.2.7
Display Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
First startup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Home Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Power meter / String monitoring (M80/60U_122) . . . . . . . . . . . . . . . . . . 50
Energy Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Inverter Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
General Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Install Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
3
4.2.8
4.2.9
4.2.10
Inverter ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Dry Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
5　Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
5.1　Replace Surge Protection Device (SPD) . . . . . . . . . . . . . . . . . . . . . . 56
5.2　Replace Internal String Fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
5.3　5.4　5.4.1
Smart Fans Replacement and Filters Cleaning . . . . . . . . . . . . . . . . . . 65
De-Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Disassemble the Wiring box compartment . . . . . . . . . . . . . . . . . . . . . 72
6　Error message and Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . 75
7　Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
4
Figure
Figure 2-1 : Components of M80/60U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 2-2 : Overview of M80 series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 2-3 : Overview of M60 series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 2-4 : Rating labels of M80/60U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 2-5 : Wiring box layout of M80U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Figure 2-6 : Wiring box layout of M60U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Figure 3-1 : Mounting bracket dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Figure 3-2 : Required position for at least 8 screws . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 3-3 : Prohibited position for screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 3-4 : Permitted mounting positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 3-5 : Prohibited mounting positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 3-6 : Required mounting clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 3-7 : Specification of fixing WB for wall-mounting installation . . . . . . . . . . . . . . . 24
. . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Figure 3-8 : Wire stripping guide for AC terminals
Figure 3-9 : Location for AC terminal (120 model) . . . . . . . . . . . . . . . . . . . . . . . . 27
Figure 3-10 : Wire stripping guide for AC terminals . . . . . . . . . . . . . . . . . . . . . . . 28
Figure 3-11 : Two optional Locations for AC terminal (121 Model) . . . . . . . . . . . . . . . . 29
Figure 3-12 : Wire stripping guide for AC terminals . . . . . . . . . . . . . . . . . . . . . . . 30
Figure 3-13 : Location for AC terminal (122 Model) . . . . . . . . . . . . . . . . . . . . . . . 31
Figure 3-14 : Wiring Box layout for M80U_120 / M60U_120 . . . . . . . . . . . . . . . . . . . . 33
Figure 3-15 : Location and string wiring to DC fuse holders for M80U_120 / M60U_120 (shown for MPPT 1) . . . 34
Figure 3-16 : Wiring Box layout for M80U_121 / M60U_121 . . . . . . . . . . . . . . . . . . . . 35
Figure 3-17 : Location for DC terminals for M80U_121 / M60U_121 . . . . . . . . . . . . . . . . 36
Figure 3-18 : Wiring Box layout and Bottom view of inverter chassis showing location
of MC4 connectors used to connect array wiring (DC) to M80U_122 . . . . . . . . 37
Figure 3-19 : Wiring Box layout and Bottom view of inverter chassis showing location
of MC4 connectors used to connect array wiring (DC) to M60U_122 . . . . . . . . 38
Figure 3-20 : Grounding bar location for M80U_120 / M60U_120 . . . . . . . . . . . . . . . . 39
Figure 3-21 : Specification of fixing the grounding bar for WB . . . . . . . . . . . . . . . . . . 40
Figure 3-22 : Communication Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Figure 3-23 : Process of Ammembling the Communication Module . . . . . . . . . . . . . . . 42
Figure 3-24 : Multiinverter connection illustration . . . . . . . . . . . . . . . . . . . . . . . . 44
Figure 3-25 : EPO function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Figure 3-26 : Dry Contact connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Figure 4-1 : Panel indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Figure 4-2 : Country, language and ID settings for first startup . . . . . . . . . . . . . . . . . . 49
Figure 4-3 : Home page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Figure 4-4 : Power meter page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
5
Figure 4-5 : Energy log Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Figure 4-6 : Event log Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Figure 4-7 : Inverter information page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
. . . . . . . . . . . . . . . . . . . . . . . . . . . 52
.
.
. . . . . . . . . . . . . . . . . . . . . . . . . . 53
Figure 4-9 : Install settings page displays
Figure 4-10 : Inverter ID page display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Figure 4-11 : Insulation page display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Figure 4-8 : General settings page display
Figure 4-12 : Dry Contact function page display . . . . . . . . . . . . . . . . . . . . . . . . . 55
Figure 5-1 : AC and DC SPD modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Figure 5-2 : Remove front cover of wiring box compartment for M80U . . . . . . . . . . . . . . 58
Figure 5-3 : Remove front cover of wiring box compartment for M60U . . . . . . . . . . . . . . 59
Figure 5-4 : The alarms indicate AC and DC SPD Fail . . . . . . . . . . . . . . . . . . . . . . 60
Figure 5-5 : Pull out the connectors and remove the screws as shown in arrows . . . . . . . . 60
Figure 5-6 : LED indicator on "finger-safe" fuse holder for M80/60_120 models . . . . . . . . . . 61
Figure 5-7 : Combiner fuse holders and fuse access for 120 models . . . . . . . . . . . . . . 62
. . . . . . . . . . . . . . . . . . . . . . . 63
Figure 5-8 : Fuse holder location of M80/60U_122
Figure 5-9 : Pull out the fuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Figure 5-10 : Smart fans location on Power Module compartment . . . . . . . . . . . . . . . . 65
Figure 5-11 : Smart fan location inside on WB chassis . . . . . . . . . . . . . . . . . . . . . . 65
Figure 5-12 : 12 cm potted fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Figure 5-13 : Disassembling fan inside the wiring box compartment . . . . . . . . . . . . . . . 67
Figure 5-14 : Removal of filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Figure 5-15 : Disassembling fans inside the power module compartment (showing one side only) . . . 69
Figure 5-16 : Disassembling the bottom filter . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Figure 5-17 : The ON/OFF positions of DC Switches . . . . . . . . . . . . . . . . . . . . . . 72
Figure 5-18 : Remove AC, DC, and communication cables and then unscrew 6 screws . . . . . 73
Figure 5-19 : Remove 8 screws and then separate WB from PM . . . . . . . . . . . . . . . . 74
Figure 7-1 : Thermal Derating curve of M80U . . . . . . . . . . . . . . . . . . . . . . . . . . 86
6
Table
Table 2-1 : Packing list of M80U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 2-2 : Rating label explanation of M80/60U . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 2-3 : Wiring box layout description of M80U . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 2-4 : Wiring box layout description of M60U . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 3-1 : RS-485 Terminal block wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Table 3-2 : Vcc and Bus Termination switch settings . . . . . . . . . . . . . . . . . . . . . . . 44
Table 3-3 : Definition of digital input & EPO function . . . . . . . . . . . . . . . . . . . . . . . 45
Table 4-1 : LED indicator . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Table 4-2 : Dry Contact Trigger Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Table 5-1 : SPD Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Table 6-1 : Error Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Table 6-2 : Warning Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Table 6-3 : Fault Message . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Table 7-1 : Specifications for M80U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Table 7-2 : Specifications for M60U . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
7
Safety
1　Safety
1.1 Information of the Inverter
1.1.1 Legal Provisions
Copyright – DELTA ELECTRONICS, INC. - All rights reserved.
This manual accompanies our product for use by the end users. The technical
instructions and illustrations contained in this manual are to be treated as
confidential and no part may be reproduced without the prior written permission
of DELTA ELECTRONICS, INC. Service engineers and end users may not
divulge the information contained herein or use this manual for purpose other
than those strictly connected with correct use of the product. All information and
specifications are subject to change without notice.
DELTA ELECTRONICS, INC. shall have no obligation to both personal injury
and property damage hereinafter with respect to any actions -- (a) the product
has been installed and repaired improperly; (b) the product has been misuse
without following the instructions on this user manual; (c) the product has failed
due to incorrect unpacking.
1.1.2 Target Group
This user manual of the solar inverter is prepared for a person who is well-trained
for installing, commissioning, using, and doing maintenance. The well-trained
person must have the following basic and advanced skills:
• The fundamentals of electricity, wiring, electrical components and electrical
schematic symbols.
• Knowledge of how a solar inverter works and is operated.
• Training in the installation and commissioning of electrical devices and installations.
• Training in how to deal with the dangers and risks associated with installing
and using electrical devices and installations.
• Compliance with this manual and all safety information.
Please read the user manual before working on the product.
8
Safety
1.2 General Safety
IMPORTANT SAFETY INSTRUCTIONS : SAVE THESE INSTRUCTIONS !
- Please read these instructions carefully and save them for later use.
To prevent any personal injury and any property damage, also ensure longterm
operation of the solar inverter, it is imperative this section be read carefully and
all the safety instructions understood before using this inverter.
This user manual provides important instructions for Delta grid-tie transformerless
solar inverter. The product is designed, tested, verified, and certified according
to international safety requirements, regulations, and standards but precautions
must be observed when installing and operating the product.
The inverter installation must be performed by an authorized electrician in accordance
with the local and the National Electrical Code® ANSI/NFPA 70 or the Canadian
Electrical Code® CSA C22.1 and OSHA requirements. Our Product is suitable
for both indoor and outdoor use.
ATTENTION : NO GALVANIC ISOLATION
- The design of this inverter is transformerless. There is no isolation transformer
between the AC and DC sides, i.e., the product does not require galvanic isolation.
Any PV array connected must have the PV circuits isolated from ground, i.e., do not
bond either side of the array to ground!
If a grounded PV array is connected to the inverter, the error message INSULATION
(E34) will appear on the display.
- It is prohibited to reference the L1, L2, or L3 terminal to ground.
1.2.1 Condition of Use
- The M80/60U is a transformerless solar inverter with dual independent MPP
tracking inputs, each of which converts the variable direct current of the solar
array into a utility frequency grid-compliant balanced three-phase current and
feeds it into the utility grid.
- The Photovoltaic modules used must be compatible with the inverter. PV
modules with a high parasitic capacitance to ground may only be utilized if the
capacitive coupling does not exceed 8μF.
- The inverter must only be operated in countries for which it is approved by
Delta and the grid operator.
9
Safety
1.2.2 Symbols
This section describes the definition of the symbols in this manual.
In order to prevent both personal injury and property damage, and to ensure
long-term operation of the product, please read this section carefully and follow
all the safety instructions while you use the product.
DANGER!
- This warning indicates an immediate hazard which will lead to death or
serious injury.
WARNING !
- This warning indicates a hazardous condition which may lead to death or
serious injury.
CAUTION !
- This warning indicates a hazardous condition which may lead to minor injury.
ATTENTION
- This warning indicates a condition of potential damage to property and/or the
environment.
10
Safety
INFORMATION
- An exclamation mark enclosed in a double circle indicates additional important
information is contained in the following section and the user should follow the
instructions to prevent any hazards.
DANGER : ELECTRICAL HARZARD!!
- This warning indicates an immediate electrical hazard that unheeded can lead
to death or serious injury.
CAUTION : HOT SURFACES, DO NOT TOUCH!
- This warning indicates a potential burn hazard.
- Use care when touching surfaces when operating the product.
- Do not perform any task until the product cools down sufficiently.
- This icon indicates that a prescribed time delay must elapse before engaging in an
indicated action.
- Patientez le délai requis avant d’entreprendre l’action indiquée.
- This symbol indicates the location of an equipment grounding conductor (EGC)
terminal.
- (PE) Équipement conducteur de terre.
11
Introduction
2　Introduction
The M80/60U are designed to enable the highest levels of efficiency and provide
longest operating life of photovoltaic inverter by use of state-of-the-art high frequency
and low EMI switchmode technology. It is suitable for indoor or outdoor use. The
inverter installation must be performed by an authorized electrician in accordance
with the local and the National Electrical Code® ANSI/NFPA 70, NEC 690.5,
UL 1741, IEEE 1547, IEEE 1547.1, OSHA requirements and the Canadian
Electrical Code® CSA C22.1.
ATTENTION : NO GALVANIC ISOLATION
- This product uses a transformerless design, and is not provisioned with an
isolation transformer, and therefore has no galvanic isolation.
PV array circuits connected must be floating with respect to ground, i.e.,
must not be referenced (bonded) to ground.
If grounded PV arrays are connected to the inverter, the inverter will not
connect to the grid and the error message INSULATION (E34) will appear on
the display.
- It is prohibited to connect terminals L1, L2, or L3 to ground.
2.1 Valid Model
The user manual is valid for the following device types :
• M80U_120
• M60U_120
• M80U_121
• M60U_121
• M80U_122
• M60U_122
This user manual must be followed during installation, operation, and maintenance.
The M80/60 Series have 3 models as shown in Figure 2-2. Delta reserves the
right to make modifications to the content and technical data in this user manual
without prior notice.
12
Introduction
2.2 Product Overview
The components of M80/60U is shown as Figure 2-1.
①
②
③
④
For 122 model
⑤
⑥
⑦
⑧
Figure 2-1 : Components of M80/60U
M80U / M60U
Object
Qty
Description
1
Delta Solar Inverter
1 pc
Solar inverter
2
Gland
1 pc
Communication port cover
3
User Manual
1 pc
Important instructions for solar inverter
Safety instructions should be followed
during installation and maintenance
4
Mounting Bracket
1 pc
Wall mounting bracket
(include packing for wiring box)
5
Screw
5 pcs
Inverter with wall mount screws
6
MC4 connector
7
Al Alloy Busbar
1 pc
PE Grounding (122 model only)
8
Screw
3 pcs
PE Grounding screws (122 model only)
18 pairs
For M80U_122 model
12 pairs
For M60U_122 model
Table 2-1 : Packing list of M80/60U
13
Introduction
M80U_120
Air Outlets /
Smart Fans
LCD/LED Display and
Control Buttons
AC Switch
Chassis access for AC
Wiring; 2" TSO*
Rating Label
Communication
Connections
Air Inlets
Chassis access for DC
wiring; 1¼" TSO*, 4 places
DC Switches,
1 per MPPT
M80U_121
Air Outlets /
Smart Fans
LCD/LED Display and
Control Buttons
AC Switch
Chassis access for AC Wiring;
Side: 2½" TSO*
Bottom: 2" TSO*
Communication
Connections
Rating Label
Air Inlets
Chassis access for DC Wiring;
Side: 2½" TSO*
Bottom: 2" TSO*
M80U_122
Air Outlets /
Smart Fans
LCD / LED Display
and Buttons
AC Switch
1¼" gland for DC Grounding
2½" gland for AC Wiring
Rating Label
Communication
Connections
MC4 type DC connector
18 pairs
Air Inlets
DC Switch
*TSO = Trade Size Opening
Figure 2-2 : Overview of M80 series
14
Introduction
M60U_120
Air Outlets /
Smart Fans
LCD/LED Display and
Control Buttons
AC Switch
Chassis access for AC
Wiring; 2" TSO*
Rating Label
Communication
Connections
Air Inlets
Chassis access for DC
wiring; 1¼" TSO*, 4 places
DC Switches,
1 per MPPT
M60U_121
Air Outlets /
Smart Fans
LCD/LED Display and
Control Buttons
Chassis access for AC Wiring;
Side: 2½" TSO*
Bottom: 2" TSO*
Communication
Connections
Rating Label
Air Inlets
Chassis access for DC Wiring;
Side: 2½" TSO*
Bottom: 2" TSO*
M60U_122
Air Outlets /
Smart Fans
LCD/LED Display and
Control Buttons
AC Switch
1¼" gland for DC Grounding
Chassis access for AC Wiring;
Bottom: 2½" TSO*
Rating Label
Communication
Connections
Air Inlets
MC4 type DC connector
12 pairs
DC Switches
1 per MPPT
*TSO = Trade Size Opening
Figure 2-3 : Overview of M60 series
15
Introduction
Figure 2-4, below, shows the certification and rating labels of M80/60U, and
Table 2-2, defines the symbol markings on these labels.
M80U
M60U
Figure 2-4 : Rating labels of M80/60U
16
Introduction
Symbol
Definition
FCC designation
Please read the user manual for further information
Danger : Electrical Hazard
Danger : Electrical Hazard for the isolation duration
Warning of the hot surface of the inverter
ETL Listed Mark approved by Intertek Lab
Table 2-2 : Rating label explanation of M80/60U
In the following pages, Figures 2-5 and 2-6 illustrate the layout of wiring box
options of the M60U/M80U and Tables 2-3 and 2-4, respectively, describes the
detail of each figure.
The Wiring Box area includes terminals for connection of the inverter input (DC)
wiring, output (AC) wiring, RS-485 communication and other signal wiring, as
well as DC & AC surge protection devices (SPD), DC switches, and fuse holders
for some models.
17
Introduction
⑱
M80U_120
⑳
⑲
⑰
⑯
⑦
⑭
IN 2
IN 1
23
⑨
⑮
22
⑫
①
④⑬
⑱
⑲
⑧
M80U_121
⑰
⑩
IN 1
②
⑥
⑧
IN 2
⑪
①
M80U_122
⑦
⑱
⑯
⑳
⑤
⑲
⑰
⑯
⑦
⑭
23
IN 2
IN 1
⑧
⑫
⑬
②
21
③
⑮
24
Figure 2-5 : Wiring box layout of M80U
NO.
1
2
3
4
5
6
7
8
Component
NO.
Component
NO.
Component
2” cable opening for AC
2½” cable opening for AC
¼” cable opening for DC grounding
1¼” cable opening for DC
2” cable opening for DC
2½” cable opening for DC
AC switch
DC grounding bar
9
10
11
12
13
14
15
16
AC grounding bar
95mm 2 DC terminal for IN 1
95mm 2 DC terminal for IN 2
Fuse holder type DC IN1
Fuse holder type DC IN2
DC switch for IN1
DC switch for IN2
Type II AC SPD
17
18
19
20
21
22
23
24
Type II DC SPD
Internal AC terminal
Internal DC terminal
Wiring box fan
MC4 connectors
Communication port
Grounding (M6 threaded stud)
Ground bar location
Table 2-3 : Wiring box layout description of M80U
18
Introduction
⑰
M60U_120
⑲
⑱
⑯
⑮
⑦
⑬
IN 2
IN 1
21
⑭
⑪
①
⑰
④⑫
⑱
M60U_121
⑯
②
⑥
IN 2
①
M60U_122
⑨
IN 1
⑧
⑰
⑤
⑮
⑲
⑩
⑱
⑯
⑮
⑦
⑬
IN 2
IN 1
⑪
22
⑫
②
⑳
③
⑭
23
Figure 2-6 : Wiring box layout of M60U
NO.
1
2
3
4
5
6
7
8
Component
NO.
Component
2” cable opening for AC
2½” cable opening for AC
¼” cable opening for DC grounding
1¼” cable opening for DC
2” cable opening for DC
2½” cable opening for DC
AC switch
95mm2 AC terminal
9
10
11
12
13
14
15
16
95mm 2 DC terminal for IN 1
95mm 2 DC terminal for IN 2
Fuse holder type DC IN1
Fuse holder type DC IN2
DC switch for IN1
DC switch for IN2
Type II AC SPD
Type II DC SPD
NO.
17
18
19
20
21
22
23
Component
Internal AC terminal
Internal DC terminal
Wiring box fan
MC4 connectors
Communication port
Grounding (M6 threaded stud)
Ground bar location
Table 2-4 : Wiring box layout description of M60U
19
Installation
3 Installation
CAUTION !
- The unit should not be installed in direct sunlight.
WARNING !
- Do not install the unit near or on flammable surfaces.
- Please mount the unit tightly on a solid / smooth surface.
The chapter contains instructions for (1) Mechanical installation; (2) Electrical
Installation; (3) Communication setup.
3.1 Mechanical Installation
This unit is designed to be either wall-mounted using the included bracket or
mounted horizontally on a tilted frame such that the top of the inverter is raised
to an angle of 15deg or greater from horizontal plane.
To wall mount the inverter, use the following the procedure:
1. Ensure the wall chosen for the installation location can provide solid support
of the inverter weight.
2. Using the mounting bracket as a template, determine the locations for the
eight required mounting screws, per Figure 3-2. Ensure the bracket is installed
vertically, oriented as shown in Figure 3-1, such that the inverter switch box
will be located at the bottom.
3. Affix the wall mounting bracket to a wall providing solid support; use at least 8
5/16in (M8) Phillips head screws. Refer to Figure 3-2 for correct installation.
such that it iinstallation is perpendicular to the floor and the AC and DC terminal
are located at the bottom of the bracket.
4. Hang the inverter on the wall mounting bracket and secure.
5. Figure 3-7 shows the installation detail for fixing the wiring box.
CAUTION !
- The mounting bracket shipped with the unit is specially designed and is the only
certified mounting device for mounting the inverter.
- Use a minimum of eight 5/16in (M8) Phillips head screws to affix the mounting
bracket to mounting surface. See Figure 3-2.
20
Installation
691mm [27.2in]
205mm [8.1in]
818mm [32.2in]
875mm [34.5in]
400mm [15.7in]
50mm [2.0in]
246mm [9.7in]
410mm [16.1in]
Figure 3-1 : Mounting bracket dimensions
21
Installation
Necessary for vertical fixing
Necessary for horizontal fixing
Figure 3-2 : Required position for at least 8 screws
Figure 3-3 : Prohibited position for screws
22
Installation
Make sure the lowest point of the inverter
chassis must be ≥ 12” (30cm) from floor surface
and not susceptible to water immersion.
Max. 90
90
TYP SUPPORT
STRUCTURE
≧12”
(≧30cm)
ROOF DECK
Figure 3-4 : Permitted mounting positions
> 75
Figure 3-5 : Prohibited mounting positions
O : Permitted / X : Prohibited
23
Installation
> 33cm
[12.99in]
> 60cm
[23.62in]
> 50cm
[19.69in]
Wall
> 80cm
[31.49in]
> 5cm
[1.97in]
Inverter #1
Inverter #2
> 50cm
[19.69in]
Figure 3-6 : Required mounting clearances
CAUTION !
- Failure to comply with above mounting instructions including permitted
orientations and designated clearances may result in derated power output
and may void the warranty. To avoid these issues follow the instructions above!
Secure the inverter with the provided screws.
Figure 3-7 : Specification of fixing WB for wall-mounting installation
24
Installation
3.2 Electrical Installation for AC Wiring
DANGER : ELECTRICAL HARZARD!!
- To avoid shock hazard during cabling, insure any live grid connections are removed
from the inverter.
WARNING !
- Installation and commissioning must be performed by a well-trained person
(e.g.a licensed electrician) in accordance with local, state, and National Electrical
Code ANSI / NFPA 70 requirements.
- Input and output circuits of this unit are isolated from the enclosure System
grounding must be done in accordance with the National Electrical Code (NEC).
- Compliance to the local electrical code is the installer's responsibility.
- Inverter warranty void if the DC input voltage exceeds 1000 Vdc.
CAUTION : INVERTER AND EQUIPMENT DAMAGE MAY OCCUR !
- Ampacity of the AC conductors must comply with all requirements of NEC Section
310 or equivalent.
- Wiring method for the AC Installation must comply with the local electrical code.
- Failure to follow the instructions may result in damage to the inverter and AC
conductors.
CAUTION : POINT OF CONNECTION !
- The M80/60U solar Inverters must be connected to a 3-phase 480 Vac utility service.
NEC 705.12(D)(1) requires that the inverter (every fixed appliance) must be
connected to a separate, dedicated circuit breaker (or other approved OCPD)
with no other outlets or devices connected to the same circuit (not shared by
any other appliance).
ATTENTION
- This inverter may be damaged due to moisture or dust intrusion.
DO NOT OPEN the power module section of the inverter.
25
Installation
3.2.1 Required Protective Devices and AC Wiring
Installation for M80U_120 / M60U_120
North American electrical codes require a dedicated over-current device such
as a circuit breaker in line between the inverter and AC source.
Model
Upstream circuit breaker
M80U
≧125A
M60U
≧100A
Below is procedure for preparing AC conductors for connection to the AC terminals
(M80U_120/M60U_120) :
• Ensure the AC conductors used are Cu and sized to the correct ampacity per
NEC or other local code.
• Strip off all wires for 14 mm [0.55in].
• The cross-sectional area for each AC conductor is 1~2/0 AWG.
Conductor cross-section:
1~2/0 AWG (35 ~ 70mm²)
L1
L2
Conduit
to/from
AC Grid
L3
N
Conductor cross-section:
4~14 AWG (2 ~ 20mm²)
PE
Stripping length:
14 ~16mm [0.55~0.63in]
Figure 3-8 : Wire stripping guide for AC terminals
26
Installation
AC switch
After inserting
conductor, torque
terminal screw to
30.6 lbf-in (3.5 N.m)
140mm [5.51in] bending space
L1
L2
L3
N
PE
AC chassis entry accommodates
up to 2" trade size conduit
(e.g., EMT)
EMT
After inserting
conductor, torque
terminal screw to 43.7 lbf-in (5 N.m)
Figure 3-9 : Location for AC terminal (120 model)
Figure 3-9 illustrates the location of the AC conduit entry and connections for
AC terminal block:
- Insert stripped phase conductor into appropriate switch terminal.
- Tighten each phase terminal lug to a torque value of 30.6 lbf-in (3.5 N.m).
- Insert the EGC conductor into the ground bar located on the rear wall of the
WB chassis.
- Tighten the EGC conductor in the ground bar lug to a torque value of 43.7 lbf-in
(5 N.m).
- The bending space is 140 mm [5.51in] which meets the safety standard.
27
Installation
3.2.2 Required Protective Devices and AC Wiring
Installation for M80U_121 / M60U_121
In NA to meet code requirements, a dedicated circuit breaker (or other OCPD)
must be located at the interconnection point of the AC source.
Model
Upstream circuit breaker
M80U
≧125A
M60U
≧100A
Below is procedure for preparing AC conductors for connection to the AC terminals
(M80U_121/M60U_121) :
Ensure the AC conductors used are Cu and sized to the correct ampacity per
NEC or other local code.
• Strip off all wires for 14 mm [0.55in].
• The cross-sectional area for each AC conductor is 1~2/0 AWG.
Conductor cross-section:
1~2/0 AWG (35 ~ 70mm²)
L1
L2
Conduit
to/from
AC grid
L3
N
PE
Stripping length:
22 ~24mm [0.87~0.94in]
Figure 3-10 : Wire stripping guide for AC terminals
- Ensure the correct conductor is connected to the appropriate terminal.
- After conductor is inserted, tighten L1~N terminal with a torque value of
30.6 lbf-in (3.5 N.m), PE terminal with 61.2 lbf-in (7 N.m).
- There are two options for connecting the AC conduit to the inverter (see Figure 3-11):
• Bottom feed (up to a 2" trade size conduit)
• Side feed (up to 2½" trade size conduit)
28
Installation
AC Terminal block
L1
L2
After inserting
conductor, torque
terminal screw to
30.6 lbf-in (3.5 N.m)
L3
Conduit
from AC
Panel
N
PE
160mm [6.3in] bending space
Insert conductors and tighten
screw to torque of 61.2 lbf-in (7 N.m)
Side entry option using 2-½" (max)
trade size raceway
AC Terminal block
L1
L2
After inserting
conductor, torque
terminal screw to
30.6 lbf-in (3.5 N.m)
L3
N
PE
Bottom entry option using
2" (max) trade size raceway
Insert conductors and tighten
screw to torque of 61.2 lbf-in (7 N.m)
EMT
Figure 3-11 : Two optional Locations for AC terminal (121 Model)
29
Installation
3.2.3 Required Protective Devices and AC Wiring
Installation for M80U_122 / M60U_122
In NA to meet code requirements, a dedicated circuit breaker (or other OCPD)
must be located at the interconnection point of the AC source.
Model
Upstream circuit breaker
M80U
≧125A
M60U
≧100A
Below is procedure for preparing AC conductors for connection to the AC terminals
(M80U_122/M60U_122) :
• Ensure the AC conductors used are Cu and sized to the correct ampacity per
NEC or other local code.
• Strip off all wires for 14 mm [0.55in].
• The cross-sectional area for each AC conductor is 1~2/0 AWG.
Conductor cross-section:
1~2/0 AWG (35 ~ 70mm²)
L1
L2
Conduit
to/from
AC grid
L3
N
PE
Stripping length:
14 ~16mm [0.55~0.63in]
Figure 3-12 : Wire stripping guide for AC terminals
30
Installation
After inserting
conductor, torque
terminal screw to
61.2 lbf-in (7 N.m)
AC switch
Bottom AC entry
Up to 2 ½ " trade size
conduit (e.g,. EMT)
L1
L2
L3
N
PE
140mm [5.51in] bending space
After inserting
conductor, torque
terminal screw to
30.6 lbf-in (3.5 N.m)
EMT
Figure 3-13 : Location for AC terminal (122 Model)
Figure 3-13 illustrates the location of the AC conduit entry and connections for
AC terminal block:
- Ensure the correct conductor is connected to the appropriate terminal.
- After conductor is inserted, tighten L1~N terminal with a torque value of 30.6 lbf-in
(3.5 N.m), PE terminal with 61.2 lbf-in (7 N.m).
- The bending space is 140 mm [5.51in] which meets the safety standard.
31
Installation
3.3 Electrical Installation for DC Wiring
DANGER : ELECTRICAL HARZARD!!
- PV array converts sunlight into electric power with high DC voltage and high
DC current which can cause dangerous electrical shock hazard!
- Use an opaque material to cover the PV array before wiring or cabling.
- Ensure the correct polarities are connected when DC cabling is applied.
WARNING !
- The risk of electric shock and fire.
- Use only PV modules that are UL Listed to1000V or higher.
- Ensure the two DC switches are placed in the "OFF" position, and the PV array
is disconnected when DC conductors are connected.
ATTENTION
- The PV Array positive or negative leads must not be connected to ground.
3.3.1 DC Wiring Installation for M80U_120 / M60U_120
Please read the following instructions for connecting DC terminals
(M80U_120 / M60U_120) :
• Ensure the AC conductors used are Cu and sized to the correct ampacity per
NEC or other local code
• Strip off all wires for 14 mm [0.55in].
• The cross-sectional area for each DC conductor is 8~14 AWG.
• Ensure the correct conductor is connected to the correct fuseholder.
• Tighten each individual screw terminal screw to a torque value of 24.5 lbf-in
(2.8 N.m).
• Four 1¼” chassis access holes (KOs) can be utilized to connect conduits from
PV array DC wiring into the inverter, as shown in Figure 3-15.
ATTENTION
- Ensure all terminals are tightened to the specified torque value of
24.5 lbf-in (2.8 N.m).
32
Installation
M80U_120
+
-
+
+
IN 1
+
+
IN 1
-
+
-
-
+
-
IN 2
-
+
M60U_120
-
+
-
+
IN 2
-
Figure 3-14 : Wiring Box layout for M80U_120 / M60U_120
33
Installation
M80U_120
+
-
+
-
+
Allowable DC conductor
size 8~14 AWG
Tighten fuse holder screws
to a torque value of 24.5 lbf-in (2.8 N.m)
-
EMT
EMT
-
+
1¼” trade size chassis access, 2 pl,
for connection of DC conduits
M60U_120
+
EMT
-
Allowable DC conductor
size 8~14 AWG
Tighten fuse holder screws
to a torque value of 24.5 lbf-in (2.8 N.m)
1¼” trade size chassis access, 2 pl,
for connection of DC conduits
EMT
Figure 3-15 : Location and string wiring to DC fuse holders for M80U_120 / M60U_120
(shown for MPPT 1)
34
Installation
3.3.2 DC Wiring Installation for M80U_121 / M60U_121
Please read the following instructions for attaching DC terminals
(M80U_121 / M60U_121) :
• These models are designed to be utilized with external combiner boxes and do
not have any internal DC combining capability
• Specific size of DC conductors must be determined from NEC or other local
codes.
• The range of conductor sizes accommodated by each DC terminal is 1~2/0 AWG,
Cu only.
• Ensure the correct conductor is connected to its associated terminal.
• Tighten each terminal block screw to a torque value of 70 lbf-in (8 N.m).
• The bending space is 160 mm [6.3in] which meets the safety standard.
• For the 121 model, two mounting options for installing the DC connection are
available, bottom entry or entry. Both options have a 2½" chassis access hole
(KO). Side entry is shown in Figure 3-17.
ATTENTION
- Ensure the DC terminal block screws are tightened to a torque value of
70 lbf-in (8 N.m).
+
+
-
IN 1
IN 2
PE
Figure 3-16 : Wiring Box layout for M80U_121 / M60U_121
35
Installation
DC Terminal Block
Side entry shown using one
2½" (max) EMT for DC array wiring
IN1+
IN1-
EMT
IN2+
IN2PE
160mm [6.3in] bending space
- Stripping length : 22 ~ 24mm [0.87~0.94in]
- Allowable conductor size : 1 ~ 3/0 AWG (35 ~ 95mm²)
- To secure conductor, tighten the terminal screw to a torque of 70 lbf-in (8 N.m).
Figure 3-17 : Location for DC terminals for M80U_121 / M60U_121
36
Installation
3.3.3 DC Wiring Installation for M80U_122 / M60U_122
M80U_122
IN 1
IN 2
Fuse Board 1
Fuse Board 2
+01 +02 +03 +04 +05 +06 +07 +08 +09
+01 +02 +03 +04 +05 +06 +07 +08 +09
-01 -02 -03 -04 -05 -06 -07 -08 -09
-01 -02 -03 -04 -05 -06 -07 -08 -09
+01 -01 +04 -04 +07 -07
+01 -01 +04 -04 +07 -07
+02 -02 +05 -05 +08 -08
+02 -02 +05 -05 +08 -08
+03 -03 +06 -06 +09 -09
+03 -03 +06 -06 +09 -09
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
IN 1
IN 2
Figure 3-18 : Wiring Box layout and Bottom view of inverter chassis showing location
of MC4 connectors used to connect array wiring (DC) to M80U_122
37
Installation
M60U_122
IN 1
IN 2
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
+
-
IN 1
IN 2
Figure 3-19 : Wiring Box layout and Bottom view of inverter chassis showing location
of MC4 connectors used to connect array wiring (DC) to M60U_122
38
Installation
3.3.4 Grounding bar location for M80U_120 / M60U_120
Figure 3-20 shows the AC/DC grounding bar location for M80U_120 / M60U_120.
The wire gauge of the ground cable: 6AWG~4AWG
The torque of the grounding cable: 26 lbf-in (3 N.m)
Figure 3-20 : Grounding bar location for M80U_120 / M60U_120
39
Installation
3.3.5 Grounding bar for M80U_122 / M60U_122
After installing the unit, please use screws of accessory.
The torque of the screw: 22 lbf-in (2.5 N.m)
The wire gauge of the ground cable: 6AWG~4AWG
The torque of the grounding cable: 26 lbf-in (3 N.m)
②
②
①
①
Figure 3-21 : Specification of fixing the grounding bar for WB
40
Installation
3.4 Communication Module Connections
The communication module of M80/60U provides VCC, RS-485, dry contact,
EPO, and Digital Input terminals for use in various applications. Details for each
are presented below.
Dry Contact
RS-485 Bus Termination & VCC Switches
EPO*1 &
Digital Inputs*6
VCC & RS-485
Figure 3-22 : Communication Module
41
Installation
3.4.1 Accessing the Communication Module
The communication module consists of an assembly with a PCB and a plastic
carrier. It is located in a slot through the bottom of the wiring box chassis.
It is accessed from the bottom exterior of the wiring box. The carrier is secured
to the chassis by two self-retaining screws. See Figure 3-23.
To access the communication module, loosen the two self-retaining screws to
loosen the carrier from the chassis. Once loosened completely, the card/carrier
module can be withdrawn from the wiring box chassis by gently pulling the
carrier straight out from the chassis.
After pulling the desired signal cable(s) through the wiring glad provided or a
connected conduit, and connected electrically as shown in the following sections,
the module can be reinstalled by reversing the above directions. Ensure the
assembly is oriented into the chassis so as to allow the edge connector to
engage properly.
Figure 3-23 : Process of Ammembling the Communication Module
42
Installation
3.4.2 RS-485 Connection
The pin definition for the RS-485 terminal block is shown in Table 3-1.
- Pins 1 and 2 provide a 12DC bus for use with accessories such as R3 Power Monitor.
- Pins 3 and 5 are both connected to the DATA+ input.
- Pins 4 and 6 are both connected to the DATA- input.
These connections allow easy daisy-chaining of multiple inverters.
A 120ohm bus termination resistor is located on the communication board and
is controlled by Switch 2 as shown in Table 3-2.
Different RS-485 connection scenarios require different set up for the 120ohm
bus termination resistor.
• When several inverters are cascaded (i.e., "daisy-chained") only the last inverter
in the chain must have its bus termination resistor switched ON.
• If the length of any RS-485 bus is greater than 2000'(610m), the use of Belden
3105A cable (or eq.) is recommended to insure communication quality.
(When using R3 Monitor, a 4wire cable is required; Belden 3108A is recommended.)
Pin
Function
1
VCC (+12V)
2
GND
3
DATA+
4
DATA-
5
DATA+
6
DATA-
1 23 4 5 6
Table 3-1: RS-485 Terminal block wiring
43
Installation
Terminal Resistor
(Last inverter in chain must have
Switch 2 in ON position.)
Data Format:
Baud rate: 19200
Data bits: 8
Stop bit: 1
Parity: N/A
RS485/USB
or
RS485/RS232
Figure 3-24 : Multiinverter connection illustration
Switch 1
Switch 2
ON
VCC ON
Bus Termination Resistor ON
OFF
VCC OFF
Bus Termination Resistor OFF
Table 3-2 : Vcc and Bus Termination switch settings
44
Installation
3.4.3 EPO Function & Digital Input
Communication Module has an emergency power off function (EPO), and EPO
enable can be found in the Install Settings page.
Figure 3-25 : EPO function
A digital curtailment control is available that can be set to limit the inverter's
available active output power. The control settings for this function are made by
placing a hardware short (jumper) between two terminals of the terminal block
shown in Table 3-3, below.
Short
Inverter’s action
V1 & K0
Emergency power off (EPO)
V1 & K1
0% active power
V1 & K2
Maximum 30% rated power
V1 & K3
Maximum 60% rated power
V1 & K4
Maximum 100% rated power
V1 & K5
Reserved
V1 & K6
Reserved
Table 3-3 : Definition of digital input & EPO function
45
Installation
3.4.4 Dry Contact connection
The M80/60U series provides a dry control contact pair that may be used to control
external devices based on the status of operation of the inverter.
The terminal block for this function is shown in Figure 3-26. The terminals marked
in the figure identify the dry contact connection. The operation of the dry contact
is normally open. The functionality of this contact can be customized by users via
settings available in the Settings Menu.
Dry Contact
Position Not used
Figure 3-26 : Dry Contact connection
46
Commissioning
4 Commissioning
CAUTION : HOT SURFACES, DO NOT TOUCH!
- Be careful of hot surfaces when operating the product!
- Do not perform any task until the unit cools down or appropriate personal
protection gear is worn.
4.1 Display Introduction
M80/60 series include a 4x20 character type LCD display and 2 LED lights
( located on the left-hand side of the LCD ) to indicate inverter’s status as shown
in Figure 4-1. Please refer to Table 4-1 for more information about inverter’s
statuses and LED indicator.
The following section will introduce the functions that can be adjusted by users
through the LCD panel. When adjusting settings, LCD panel will change the
display cursor from “►” to “
”.
Function
Para
Power Meter
4.2.2
Energy Log
4.2.3
Event Log Inverter
4.2.4
Information
4.2.5
General Settings
4.2.6
Install Settings
4.2.7
Inverter ID
4.2.8
Insulation
4.2.9
Dry Contact
4.2.10
47
Commissioning
ENT : Enter Menu or Confirm
LED Indicator (RED)
UP : Move UP
LED Indicator (GRN)
Down : Move Down
EXIT : Exit Menu
Figure 4-1 : Panel indicator
Condition
Standby or Countdown
Green LED
FLASH *
Red LED
OFF
Power ON
ON
OFF
Error or Fault
OFF
ON
Night time (No DC)
OFF
Bootloader mode
* ON 1s / OFF 1s
OFF
FLASH *
Table 4-1 : LED indicator
48
Commissioning
4.2 First startup
At the time of initial startup, an appropriately sized PV array and an AC grid
source must be available and connected to the inverter. Procedure is as follows:
• Complete the appropriate system pre-commissioning procedure(s).
• Initially, ensure both DC switches in WB ar in OFF position, and interconnect
the inverter to the AC grid by turning on internal and any external AC switches
as required.
• Verify the inverter control system is powered by noting that the LCD display
panel has become active.
• During the initial startup, when the LCD display become active, the inverter
control will start the First Start-up routine which allows installer to set Language
and Country code. Figure 4-2 below, illustrates the display flow charts of the
inverter startup.
• Using display and programming keys, set desired language and the country
(Grid Code) associated with the installation location and wait for the AFCI Self
Test to complete.
• Verify AFCI self test result is a pass.
• Close both DC switches, and await inverter to complete its self test sequence,
which takes approximately two minutes.
• Verify via the display there are no errors, faults or warning indications displayed
on the home page.
• If there is sufficient power available from PV array, inverter will connect to grid
and begin exporting power to the grid.
Figure 4-2 below, illustrates the display flow charts of the inverter startup.
First Startup
Select Language,
►English
Deutsch
Français
ENT
Select Grid Code,
►IEEE1547 480V
RULE 21
EXIT
ENT
Are you sure to
set Grid Code
: :
EXIT
Are you sure to
set protol :
► Delta/Solivia prot.
Sunspec prot.
►Yes /
Are you sure to set
ID : 1
Setting ID:
ID = 001
Yes / ►No
Yes / ►No
XXX
ENT
XXXXXXX
No
AFCI
Self Testing . . .
AFCI Self Test
Result:
Fail
Press ENT or EXIT to Home page
Figure 4-2 : Country, language and ID settings for first startup
The following sections indicate inverter status and settings as shown on the LCD
display.
49
Commissioning
4.2.1 Home Page
When inverter is being operated normally, the LCD will display the homepage
as shown in Figure 4-3, user can get the information about output power,
inverter status, E-today, date and time.
Press "any" key in home page will be directed to the main menu. Press EXIT at
main menu or wait 5 minutes without any operation, the display will return to
homepage.
Inverter Status
Output Power
Today Energy
20. Jan 2016 16:30
Status: :
On Grid
Power:
83.00 kW
E-Today:
192 kWh
Day -Time
Figure 4-3 : Home page
4.2.2 Power meter / String monitoring (M80/60U_122)
This page displays voltage, current and power measurements from both the AC
and DC side. Two sub pages are accessed using display keys as shown.
AC L1
L2
L3
V 277 277 277 V
I 50.5 50.5 50.5 A
P 13989 13989 13989 W
or
PF
Power.
Frequency:
:
E-Today:
IDC1
7 : 1.6
8 : 1.6
9 : 1.6
IDC2
7 : 1.0
8 : 1.6
9 : 1.6
Figure 4-4 : Power meter page
50
ENT
(A)
4 : 1.6
5 : 1.6
6 : 1.6
or
ENT
ENT
(A)
or
IDC2
1 : 1.4
2 : 1.6
3 : 1.5
ENT
DC1
DC2
545
545 V
40.0
40.0 A
21800 21800 W
or
(A)
4 : 1.6
5 : 1.7
6 : 1.7
or
ENT
0.9
41966 kW
60.00 Hz
147 kWh
or
DC
V
I
P
IDC1
1 : 1.6
2 : 1.6
3 : 1.6
ENT
(A)
Commissioning
4.2.3 Energy Log
User can view the inverter’s life energy and life runtime via Energy Log page.
Energy Log
Life Energy:
Runtime:
600 MWh
7302 Hrs
Figure 4-5 : Energy log Page
4.2.4 Event Log
Event Log display has two sub-pages as noted below and shown in Figure 4-6:
• Error Events page displays all the events (Error and Fault) and can show 30
records at a time.
• Grid Report page only displays the error that occurred at grid side, and it can
show 5 records at a time.
►Error Events
Grid Report
ENT
EXIT
or
EXIT
Error Events
►Grid Report
ENT
EXIT
ENT
29. 18/01/2016 15:30
AC Freq High
30. 17/01/2016 09:30
AC Volt Low
ENT
Figure 4-6 : Event log Page
51
Clear Event Logs ?
Yes / ►No
No Event
ENT
5. 18/01/2016 15:30
AC Freq High
Empty
Press ▲,▼&ENT > 5s Yes
or
1. 20/01/2016 15:30
No Gird
2. 19/01/2016 09:30
AC Volt Low
or
EXIT
No Event
1. 20/01/2016 15:30
AC Freq High
2. 19/01/2016 09:30
AC Volt Low
Empty
Press ▲,▼&ENT > 5s Yes
or
ENT
Clear Event Logs ?
Yes / ►No
Commissioning
4.2.5 Inverter Information
This page contains data associated with the inverter to include serial number,
installation date, inverter ID (RS-485 address), and firmware version.
Additional parameters are accessed via connected menus accessed using the
up/dn keys. Programmed settings (e.g., Inverter ID, baud rate) are adjusted
using the settings menu. The complete list of inverter information items can be
seen in Figure 4-7, below.
S/N: RN11179CB0
Install: 11/01/2016
DSP 1.80
Red. 1.65
Comm. 1.65 ID: 002
or
ENT
Country:
Insulation:
Baud Rate:
IEEE1547 480V
1200k
19200bps
or
AC connection:
Max. Power:
Dry Cont A:
Dry Cont B:
ENT
3P3W
83000VA
Insu.
Insu.
or
ENT
EPO:
Normal Close
► Grid Settings
Active Pwr Settings
React Pwr Settings
or
ENT
► FRT Settings
Figure 4-7 : Inverter information page
4.2.6 General Settings
This menu allows setting of Language, Date and Time, and RS-485 baud rate
via sub-menus in this page. Use up/dn down arrow keys to navigate to desired
menu, and then press ENT to open associated submenu choices.
► Language
Date and Time
Baud Rate
Figure 4-8 : General settings page display
52
Commissioning
4.2.7 Install Settings
CAUTION !
- The settings in Install Settings page can only be adjusted by qualified
installers or engineers. Changing these settings may result in damage
to the inverter and other equipment.
To enter Install Settings page, users must enter a valid password, which must be
obtained from Delta. There are three sets of password with different permissions:
user level, installer level, and manufacturer level.
The following sub-sections will introduce the parameters settings accessible from
the User and Installer level menus of the Install Settings page.
User Level:
► Inverter ID: 002
Insulation
Grid Code
Grid Settings
► DC Injection
Dry Cont.
PID Function*
RCMU*
Insulation
ON
- Inverter ID
- Insulation
- Grid Code
- Dry Cont.
- PID Function
- EPO
- AC Connection
- Max. Power
Installer Level:
Normal Open
► EPO
3P3W
AC Connection
ON
Anti-islanding
83000W
Max. Power
- Inverter ID
- Insulation
- Grid Code
- Grid Settings
- Dry Cont.
- PID Function
- EPO
- AC Connection
- Max. Power
► AFCI:
Return to Factory
Manufacturer Level:
ON
- All Settings
* PID: This function is not available in U.S.
* RCMU: Residual Current Monitoring.
Figure 4-9 : Install settings page displays
53
Commissioning
4.2.8 Inverter ID
Inverter ID is the RS-485 address which is assigned to the inverter and used
when the RS-485 communication system is operating, e.g., connected to a PC
or data logger. If several inverters are connected to the RS-485 bus, each must
have a distinct Inverter ID.
► Inverter ID: 002
Insulation
Grid Code
Grid Settings
ENT
Setting ID:
ID = 002
EXIT
Figure 4-10 : Inverter ID page display
4.2.9 Insulation
Prior to connecting to grid, the inverter control will measure the impedance
between the floating PV array(s) and ground (PE), also known as isolation
resistance, RISO. This measurement is compared to an internal limit and used
to determine if any ground fault is present in the array prior to connection of the
inverter to the grid.
The inverter will not connect to the grid if the measured resistance is smaller
than 100kΩ.
► Mode: ON
Resistance: 100kΩ
ENT
► ON
OFF
EXIT
Figure 4-11 : Insulation page display
54
Commissioning
4.2.10 Dry Contact
Users can choose the trigger condition of dry contact. There are 8 options in the
setting page: Disable, On Grid, Fan Fail, Insulation, Alarm, Error, Fault, and
Warning. Please refer to Table 4-2 for more details about these options.
Setting
Dry Contact Trigger Timing
Disable
No action.
On Grid
Inverter is connecting to grid.
Fan Fail
Fan Fail occurs.
Insulation
Insulation test fail.
Alarm
Any error, fault, or warning occurs.
Error
Any Error occurs.
Fault
Any Fault occurs.
Warning
Any Warning occurs.
Table 4-2 : Dry Contact Trigger Setting
DC Injection
► Dry Cont.
RCMU
EPO
ENT
ON
Normal Close
► Dry Cont.
Insulat.
ENT
EXIT
EXIT
EXIT
► Disable
On Grid
Fan Fail
Insulat.
ENT
► Alarm
Error
Fault
Warning
ENT
Figure 4-12 : Dry Contact function page display
55
Maintenance
5　Maintenance
Please check the unit regularly. If there are any impaired or loose parts, please contact
your solar installer. Ensure that there are no fallen objects in the path of the heat outlet.
WARNING !
- Prior to beginning any maintenance procedures switch AC and DC power off
to avoid risk of electrical shock!
5.1 Replace Surge Protection Device (SPD)
M80/60 series models have the surge protection device (SPD) at both AC and
DC side as shown in Figure 5-1. Table 5-1 summarizes the specifications of AC
and DC SPD.
Figure 5-1 : AC and DC SPD modules
Specification of SPD
Working voltage :
• AC module: 895VRMS
• DC module:1175V (DC)
Working Current (8/20μs): 10kA
Rated Current (I max - 8/20μs): 20kA
Operating Temperature Range: -40℃ 85℃
Manufacturer: Sichuan Zhongguang Lightning Protection Technologies Co., Ltd
Table 5-1 : SPD Specifications
56
Maintenance
The surge protection devices (SPD), located on both AC and DC input terminals,
are designed to protect sensitive circuit elements of the inverter from damage
caused by lightning and other electrical transients/surges.
If a warning message “AC Surge” or “DC Surge” appears on display panel,
follow the procedure below to replace the SPD.
• Switch AC and DC power off and wait until LCD display turns off.
• Loosen the 4 screws on the front cover of wiring box compartment and remove
cover. The AC and DC SPD units are located as shown in Figure 5-2, 5-3.
• Determine which SPD unit is damaged. See Figure 5-4.
AC SPD: “AC Surge” with show on the corner of the LCD panel.
DC SPD: “DC Surge” with show on the corner of the LCD panel.
• To remove the defective SPD, refer to Figure 5-5 and use the following procedure:
• Disengage the white wiring connector from the SPD PCB (3-pin on AC SPD or
the 2-pin on DC SPD.
• Remove four Phillips head screws at the front (terminal block) side of the SPD
PCB.
• Remove the single Phillips head screw located on the left (DC) or right (AC)
side of the SPD PCB.
• Lift and remove the entire SPD PCB and replace with new unit.
• Install the new SPD using the above procedure in reverse order. Tighten the five
screws to a torque value of 15 lbf-in (1.7 N.m).
• Reassemble the inverter, using care not to damage the waterproof seal.
57
Maintenance
M80U_120
AC SPD
DC SPD
M80U_121
DC SPD
AC SPD
M80U_122
AC SPD
DC SPD
Figure 5-2 : Remove front cover of wiring box compartment for M80U
58
Maintenance
M60U_120
AC SPD
DC SPD
M60U_121
DC SPD
AC SPD
M60U_122
AC SPD
DC SPD
Figure 5-3 : Remove front cover of wiring box compartment for M60U
59
Maintenance
Figure 5-4 : The alarms indicate AC and DC SPD Fail
AC SPD
DC SPD
Figure 5-5 : Pull out the connectors and remove the screws as shown in arrows
60
Maintenance
5.2 Replace Internal String Fuse
The M80/60U_120 models are provisioned with internal 10 mm x 38 mm string
combiner fuses and associated fuse holders located in the wiring box. Because
of the TL design, all strings are floating with respect to ground, and two fuses
are required per string input connected in series with the positive and negative
string leads. The specifications of the fuses used and the fuse holders are
described below.
Please note that the fuse holders described below are not considered as load
break devices; therefore before opening any fuse holder, ensure that both of
the DC switches are in their open position.
CAUTION !
- Failure to open DC switches before opening a fuse holder may result in
arc fault within the fuse holder, which can lead to personal injury and/or
a fire hazard!
Combiner Fuses
- Item : String Fuse (source 2)
- Part number : 0SPF015.T
- Rated current: 15 A
- Rated voltage : 1000 V
- Manufacturer : Littelfuse
- Item : String Fuse (source 1)
- Part number : 10GPV15U0
- Current rating: 15 A
- Rated voltage : 1000 V
- Manufacturer : Hollyland
①
②
LED indicating
when Fuse is interrupted
Finger-safe fuse
holder
Figure 5-6 : LED indicator on "finger-safe" fuse holder for M80/60_120 models
61
Maintenance
M80/60U_120 Model
The M80/60U_120 wiring box is equipped with 32 DINrail mounted combiner fuses
which support connection of up to 16 strings. The fuses are carried within Dead
Front Fuse Holders (see Figure 5-6), which are designed to be "Finger Safe",
i.e., opening a fuse holder disconnects the fuse at both ends, allowing safe removal
by hand. The fuse holders also feature a "blown fuse" LED indicator that provides
the user a visual determination of any open fuses. This design provides optimum
safety to personnel who replace the string fuses. Figure 5-7 shows the detail
for removing/replacing string fuses for this model.
Fuse replacement Procedure
Check the combiner fuses if the power generation of inverter is abnormal.
1. Switch AC and DC power off and wait until LCD display turn off.
2. Loosen the 4 screws on the front cover. (Figure 5-2)
Use caution: Though the DC switches are off, the fuse holders are energized
by the PV array.
3. Pull out the fuse holder door and check the fuse. (Figure 5-7)
4. Check fuse continuity and replace the fuse if necessary.
5. Reassemble the inverter, using care not to damage the waterproof seal around
the cover.
Figure 5-7 : Combiner fuse holders and fuse access for 120 models
62
Maintenance
The M80/60U_122 is equipped with fuses mounted in enclosed "pull-out" fuse
holders located inside the wiring box compartment.
The following figure shows the detail for string fuse replacement.
ATTENTION
- Fuse still exists high voltage from PV when the DC switch is disconnected.
Figure 5-8 : Fuse holder location of M80/60U_122
-
-
Item : String Fuse (source 1)
Part number : 10GPV15U0
Rate amp : 15 A
Rate voltage : 1000 V
Manufacturers : Hollyland
63
Item : String Fuse (source 2)
Part number : 0SPF015.T
Rate amp : 15 A
Rate voltage : 1000 V
Manufacturers : Littelfuse
Maintenance
Please check the fuses if the power generation of inverter is abnormal.
1. Switch AC and DC power off and wait until LCD display turn off.
2. Loosen the 4 screws on the front cover. (Figure 5-3)
3. Pull out the fuse holder and check the fuse. (Figure 5-9)
4. Replace the fuse if necessary.
5. Reassemble the inverter. Please be careful the waterproof tape for ensure
the protection degree.
ATTENTION
- Fuse still exists high voltage from PV when the DC switch is disconnected.
Figure 5-9 : Pull out the fuse
64
Maintenance
5.3 Smart Fans Replacement and Filters Cleaning
This section provides the instructions for smart fans replacement and filters
cleaning for M80/60 series models. Figure 5-10, 5-11, 5-12 illustrates the
locations of smart fans.
M80/60 models have smart fans installed in two locations on the inverter:
• Wiring Box compartment (WB)
• Power Module compartment (PM)
Air Outlets
/ Smart Fans inside PM
Figure 5-10 : Smart fans location on Power Module compartment
M80U_120
M80U_121
M80U_122
Fan inside WB
Figure 5-11 : Smart fan location inside on WB chassis
65
Maintenance
The fans utilized are designed for long service life that provides high reliability.
They feature detection of "FAN-FAIL", which is interfaced to the inverter control
and triggering of a FAN-FAIL alarm will cause power de-rating behavior for safe
operation. The Cooling Fan kit is easy to remove and cleaned. As a result, the
replacement of fans is also smart.
Waterproof connectors
12 cm potted fan with filter
Hand Grip
Figure 5-12 : 12 cm potted fan
ATTENTION
- Periodic Filter Cleaning - Cleaning the fans and filter depends on the quality
of the environment.
- Under normal duty use, the smart fans and filters need to be cleaned every
6 months
- For very dusty locations, it may be necessary to clean the fans and filters
monthly or quarterly.
66
Maintenance
1.Wiring Box compartment (WB):
The WB compartment is provisioned with a single fan as shown in Figure 5-13.
Procedure to remove WB Compartment Fan
(1) Remove the two thumb screws shown in Figure 5-13 and store outside the
fan cabinet.
(2) Disconnect the fan power connector (white body shown in Figure 5-13)
seen at the right front of the fan cover.
(3) Lift the entire fan assembly from the WB.
(4) Clean assembly or replace with a new fan.
(5) Reassemble.
Figure 5-13 : Disassembling fan inside the wiring box compartment
67
Maintenance
Power Module (PM) compartment features a 12" potted fan tray provisioned with
three separate fans mounted in the Power Module chassis. Two filters are
located behind removable covers, adjacent to the fan tray, one on each side of
the chassis. Figure 5-14 shows air outlets on right and left side of the PM
compartment.
Figure 5-14 : Removal of filters
68
Maintenance
Procedure to remove PM fan tray and filters - refer to Figure 5-15.
(1) On the right and left side of the PM, remove four screws (each side) which
secure the filter panels (photo 1).
(2) Disconnect the fan power connector. (white body in photo 2)
(3) On the right side, remove the four screws securing the fan tray (photos 2,3)
Repeat (3) for left side.
(4) From the right side of the PM, grasp the fan tray by the grip and pull straight
out.
(5) Photo 5 shows a front view of the PM fan tray.
①
②
③
④
⑤
Figure 5-15 : Disassembling fans inside the power module compartment (showing one side only)
69
Maintenance
Procedures to remove bottom filter.
(1) Directly pull out the filter from aside. (both sides are available)
(2) Make sure the hook is latched with the rail when putting back the filter.
①
②
Figure 5-16 : Disassembling the bottom filter
70
Maintenance
5.4 De-Commissioning
If it is necessary to put the device out of operation for maintenance and / or
storage, please follow the instructions below.
DANGER : ELECTRICAL HARZARD!!
To avoid any serious injuries, please follow the procedures:
- Switch off Manual Switch to shut down the inverter.
- Switch off AC circuit breaker to disconnect with electricity grid.
- Switch off the PV array switch to disconnect from the PV array.
- Use proper voltmeter to confirm that the AC and DC power are disconnected
from the unit.
- Remove the AC terminal immediately to completely disconnect from electricity grid.
- Remove the DC terminals to disconnect from PV Array.
- Remove the communication module RS-485 connection from the computer.
CAUTION : HOT SURFACES, DO NOT TOUCH !
- Please be careful of hot surfaces if the inverter is just shutting down.
- Do not perform any task until the product cool down sufficiently.
CAUTION : POSSIBILE INJURY !
- The inverter weighs more than 84 kg (185 lb). The risk of injury may happen
when the inverter is carried incorrectly or dropped during transported or when
attaching or removing it from the wall mounting bracket.
ATTENTION
- Please be careful of the screws and nuts after removing them. Do not leave
them at any corner inside the wiring box compartment.
71
Maintenance
5.4.1 Disassemble the Wiring box compartment
In order to decommission the inverter of its service life, please follow the
following instructions.
In order to disassemble the wiring box compartment (WB) if neccessary, please
follow the following instructions.
1. Please make sure turning off the AC and DC switches of the inverter.
2. Double-check the inverter is shutted down and there is no electrical hazard.
3. Figure 5-17 shows the correct way to turn off the DC swiches.
ON
ON
OFF
OFF
I : Switch is ON
O : Switch is OFF
DC Switches
AC Switches
ON
OFF
Figure 5-17 : The ON/OFF positions of DC Switches
72
Maintenance
Verify that both the AC and DC power is turned off.
4. Open the wiring box compartment lid.
5. Then remove AC, DC, communication cables.
6. Unscrew those screws shown in Figure 5-18.
AC cables
DC cables
Communication
cables
Figure 5-18 : Remove AC, DC, and communication cables and then unscrew 6 screws
73
Maintenance
7. Unscrew 8 screws and use hands to grip tightly to separate the wiring box
compartment from the power module compartment as shown in Figure 5-19.
8. Make sure the packing has been installed.
Figure 5-19 : Remove 8 screws and then separate WB from PM
74
Error message and Trouble Shooting
6　Error message and Trouble Shooting
While Delta Electronics endeavors to build electronic products to very high
standards of reliability, there will arise instances where the inverter may not
operate properly. When such a condition is encountered, please follow the
instructions in the Troubleshooting Guide (Tables 6-1, 6-2, and 6-3) to attempt
to clear the fault.
If fault continues to appear or if it is listed more than once in the inverter Error
log, it may be necessary to call Delta Technical Service Hot Line. A service
call checklist with necessary information for a call to the hotline is provided at
the end of the Troubleshooting guide.
ERROR
Message
Possible cause
Action
AC Freq
High
(E01)
1. Actual utility frequency is over
the OFR setting
2. Incorrect country setting
3. Detection circuit malfunction
1. Check the utility frequency
2. Check country setting
3. Contact our customer service for
technical support
AC Freq
Low
(E02)
1. Actual utility frequency is under
the UFR setting
2. Incorrect country or Grid setting
3. Detection circuit malfunction
1. Check the utility frequency
2. Check country & Grid setting
3. Contact our customer service for
technical support
Non-linear load in Grid and near
to inverter
Grid connection of inverter need to be
far away from non-linear load if necessary
HW Con.
Fail
(E08)
1. Wrong connection in AC terminal
2. Detection circuit malfunction
1. Check the AC connection in accordance
with the user manual
2. Contact our customer service for
technical support
No Grid
(E09)
1. AC breaker is OFF
2. Disconnect in AC terminal
1. Switch on AC breaker
2. Check the connection in AC terminal and
make sure it connects to inverter
AC Volt
Low
(E10, E15,
E20)
1. Actual utility voltage is under
the UVR setting
2. Incorrect country or Grid setting
3. Wrong connections in AC terminal
4. Detection circuit malfunction
1. Check the utility voltage within the suitable
range
2. Check country & Grid setting
3. Check the connection in AC terminal
AC Volt
High
(E11, E13,
E16, E18,
E21, E23)
1. Actual utility voltage is over the
OVR setting
2. Utility voltage is over the Slow
OVR setting during operation
3. Incorrect country or Grid setting
4. Detection circuit malfunction
1. Check the utility voltage within the suitable
range
2. Check country & Grid setting
3. Contact our customer service for
technical support
1. Actual Solar1 voltage is over
1000Vdc
2. Detection circuit malfunction
1. Modify the solar array setting, and
make the Voc less than 1000Vdc
2. Contact our customer service for
technical support
Grid Quality
(E07)
Solar1
High
(E30)
75
Error message and Trouble Shooting
ERROR
Message
Possible cause
Action
Solar2
High
(E31)
1. Actual Solar2 voltage is over
1000Vdc
2. Detection circuit malfunction
1. Modify the solar array setting, and
make the Voc less than 1000Vdc
2. Contact our customer service for
technical support
Insulation
(E34)
1. PV array insulation fault
2. Large PV array capacitance
between Plus to Ground or
Minus to Ground or both.
3. Detection circuit malfunction
1. Check the insulation of Solar inputs
2. Check the capacitance, dry PV panel
if necessary
3. Contact our customer service for
technical support
Table 6-1 : Error Message
Warning
Message
Possible cause
Action
Solar1
Low
(W01)
1. Actual Solar1 voltage is under
the limit
2. Some devices were damaged
inside the inverter if the actual
Solar1 voltage is close to "0"
3. Detection circuit malfunction
1. Check the Solar1 voltage connection
to the inverter terminal
2. Check all switching devices in boost1
3. Contact our customer service for
technical support
Solar2
Low
(W02)
1. Actual Solar2 voltage is under
the limit
2. Some devices were damaged
inside the inverter if the actual
Solar2 voltage is close to "0"
3. Detection circuit malfunction
1. Check the Solar2 voltage connection
to the inverter terminal
2. Check all switching devices in boost2
3. Contact our customer service for
technical support
HW FAN
(W11)
1. One or more fans are locked
2. One or more fans are defective
3. One ore more fans are
disconnected
4. Detection circuit malfunction
1. Remove the object that stuck in the
fan(s)
2. Replace the defective fan(s)
3. Check the connections of all fans
4. Contact our customer service for
technical support
AC Surge
DC Surge
1. Inverter was struck by lighting.
2. One or more SPD are defective
3. One or more SPD are
disconnected
4. Detection circuit malfunction
1. Check inverter’s status
2. Replace the defective SPD
3. Check the connections of SPDs
4. Contact our customer service for
technical support
Table 6-2 : Warning Message
76
Error message and Trouble Shooting
FAULT
Message
Possible cause
Action
DC
Injection
(F01, F02,
F03)
1. Utility waveform is abnormal
2. Detection circuit malfunction
1. Check the utility waveform.
Grid connection of inverter need to be
far away from non-linear load if necessary
2. Contact our customer service for
technical support
Temperature
(F05)
1. The ambient is over 60℃
(The installation is abnormal)
2. Detection circuit malfunction
1. Check the installation ambient and
environment
2. Contact our customer service for
technical support
Temperature
(F07)
1. Ambient temperature is
<-30 ℃
2. Detection circuit malfunction
1. Check the installation ambient and
environment
2. Contact our customer service for
technical support
HW NTC1
Fail
(F06)
1. Ambient temperature
>90 ℃ or <-30 ℃
2. Detection circuit malfunction
1. Check the installation ambient and
environment
2. Contact our customer service for
technical support
HW NTC2
Fail
(F08)
1. Ambient temperature
>90 ℃ or <-30 ℃
2. Detection circuit malfunction
1. Check the installation ambient and
environment
2. Please contact our customer service
HW NTC3
Fail
(F09)
1. Ambient temperature
>90 ℃ or <-30 ℃
2. Detection circuit malfunction
1. Check the installation ambient and
environment
2. Contact our customer service for
technical support
HW NTC4
Fail
(F10)
1. Ambient temperature
>90 ℃ or <-30 ℃
2. Detection circuit malfunction
1. Check the installation ambient and
environment
2. Contact our customer service for
technical support
Relay Test
Open
(F13)
1. Driver circuit for relay is
defective
2. Relay(s) is defective
3. Detection circuit malfunction
(Inverter voltage)
1. Check the input voltage, must >150Vdc
2. Replace the defective relay
3. Contact our customer service for
technical support
HW DSP
ADC1
(F15)
1. Insufficient input power
2. Auxiliary power circuitry
malfunction
3. Detection circuit malfunction
1. Check the input voltage, must >150Vdc
2. Check the auxiliary circuitry inside the
inverter
3. Contact our customer service for
technical support
77
Error message and Trouble Shooting
FAULT
Message
HW DSP
ADC2
(F16)
HW DSP
ADC3
(F17)
HW Red
ADC1
(F18)
Possible cause
Action
1. Check the input voltage, must >150Vdc
1. Insufficient input power
2. Auxiliary power circuitry
malfunction
3. Detection circuit malfunction
2. Check the auxiliary circuitry inside the
inverter
3. Contact our customer service for
technical support
1. Check the input voltage, must >150Vdc
1. Insufficient input power
2. Auxiliary power circuitry
malfunction
3. Detection circuit malfunction
2. Check the auxiliary circuitry inside the
inverter
3. Contact our customer service for
technical support
1. Check the input voltage, must >150Vdc
1. Insufficient input power
2. Auxiliary power circuitry
malfunction
3. Detection circuit malfunction
2. Check the auxiliary circuitry inside the
inverter
3. Contact our customer service for
technical support
HW Red
ADC2
(F19)
1. Insufficient input power
2. Auxiliary power circuitry
malfunction
3. Detection circuit malfunction
1. Check the input voltage, must >150Vdc
2. Check the auxiliary circuitry inside the
inverter
3. Contact our customer service for
technical support
HW Eff.
(F20)
1. The calibration is incorrect
2. Current feedback circuit is
defective
1. Check the accuracy of current and power
2. Check the current feedback circuit
inside the inverter
HW
COMM1
(F23)
1. DSP is idling
2. The communication
connection is disconnected
3. The communication circuit
is malfunction
1. Contact our customer service for
technical support
2. Check the connection interface RS-485
3. Check the communication card
HW
COMM2
(F22)
1. Red. CPU is idling
2. The internal communication
connection is disconnected
Contact our customer service for
technical support
Ground Cur.
(F24)
1. PV array insulation fault
2. Large PV array capacitance
between Plus to Ground or
Minus to Ground
3. Either side of boost driver
or boost choke malfunction
4. Detection circuit malfunction
1. Check the insulation of Solar inputs
2. Check the capacitance (+ <-> GND &
- <-> GND), must < 2.5uF. Install a
external transformer if necessary
3. Contact our customer service for
technical support
78
Error message and Trouble Shooting
FAULT
Message
Possible cause
Action
1. Power line is disconnected
HW Con. Fail
inside the inverter
(F26)
2. Current feedback circuit is
defective
1. Check the power lines inside the inverter
2. Contact our customer service for
technical support
RCMU Fail
(F27)
1. RCMU is disconnected
2. Detection circuit malfunction
1. Check the RCMU connection inside the
inverter
2. Contact our customer service for
technical support
RLY Short
(F28)
1. One or more relays are
sticking
2. The driver circuit for the
relay malfunction
Contact our customer service for
technical support
RLY Open
(F13, F29)
1. One or more relays are
abnormal
2. The driver circuit for the
relay malfunction
3. The detection accuracy is
not correct for Vgrid and Vout
Contact our customer service for
technical support
Bus Unbal.
(F30)
1. Not totally independent or
parallel between inputs
2. PV Array short to Ground
3. Driver for boost is defective
or disconnected
4. Detection circuit malfunction
1. Check the inputs connections
2. Check the PV Array insulation
3. Contact our customer service for
technical support
1. Driver for boost is defective
2. Voc of PV array is over
1000Vdc
HW Bus OVR
(F31, F33, F35) 3. Surge occurs during
operation
4. Detection circuit malfunction
Contact our customer service for
technical support
1. Surge occurs during
operation
AC Cur. High
2. Driver for inverter stage is
Contact our customer service for
(F36, F37, F38,
defective
technical support
F39, F40, F41)
3. Switching device is defective
4. Detection circuit malfunction
1. Test current loop is broken
HW CT A Fail
2. CTP3 is defective
(F42)
3. Detection circuit malfunction
79
Contact our customer service for
technical support
Error message and Trouble Shooting
FAULT
Message
Possible cause
Action
1. Test current loop is broken
HW CT B Fail
2. CTP4 is defective
(F43)
3. Detection circuit malfunction
Contact our customer service for
technical support
1. Test current loop is broken
HW CT C Fail
2. CTP5 is defective
(F44)
3. Detection circuit malfunction
Contact our customer service for
technical support
HW AC OCR
(F45)
1. Large Grid harmonics
2. Switching device is defective
3. Detection circuit malfunction
1. Check the utility waveform. Grid connection
of inverter need to be far away from
non-linear load if necessary
2. Check all switching devices in inverter
stage
3. Contact our customer service for
technical support
AFCI Circuit
Fail
(F58)
1. AFCI is not installed.
2. AFCI self-test is fail.
Check the AFCI detection circuit board for
making sure it is conneted correctly
The inverter detects Arcing
occurs.
Check cables for replacement
DC Cur. High
(F60, F61,
F70, F71)
1. Switching device in boost
is defective
2. Driver for boost is defective
3. Input current detection
circuit malfunction
1. Check all switching device in boost
2. Check the driver circuit for boost inside
the inverter
3. Check input current detection circuit
HW DC RLY
(F76)
One or more DC relays are
abnormal
Please contact our customer service for
technical support
AFCI Fault
(F59)
Table 6-3 : Fault Message
80
Error message and Trouble Shooting
Calling for Help
In order for Delta Hotline personnel to efficiently handle your service request, certain
information must be made availble to the service technician.
Prior to calling the Delta Service Hotline, the information listed below must be assembled:
Service Call Checklist
1. Installation Information
a. Location of the install
b. How many inverters
c. Date of Commissioning (if known)
2. Check the Product Label or use LCD display to view and record:
a. Model number
b. Serial number
c. Production date
3. State of the LCD:
a. Is the display active (powered)?
b. What is the state of the inverter?
c. What is the error message or code?
d. Can the Error Log be accessed?
i. If, so, please list code number, date and time for any log entry in 24 hr period prior
to appearance of error code on LCD screen
4. Status of LED warning lights.
a. What LED color(s) are lighted, if any?
b. Are the LEDs flashing on and off, or lighted continuously?
5. System configuration:
a. What is brand and model of photovoltaic modules?
b. What is number of PV modules per string
c. Number of strings in each array
d. What is maximum array voltage and current values
6. System condition:
a. Can the fault or error be reproduced? If so, how?
b. Is the fault cyclical in nature? If so, how often?
c. Was the fault apparent at the time of installation? If so, has it worsened?
d. Describe the atmospheric conditions at the time the fault/error appears or appeared.
Delta Technical Hotline can be reached at 1-877-440-5851 or 1-626-369-8021.
81
Technical Data
7　Technical Data
Model
M80U_121
M80U_120
M80U_122
DC Input
Max. input power
88 kW
Recommended PV power
106 kW
1100 V *1
Occasionally maximum voltage
Operating voltage range
200 - 1000 V
Start voltage
> 250 V
MPP voltage, rated power
600 - 800 V
710 V
Rated voltage
2
MPP tracker
Max. input current /
Each MPPT
140 / 70A
Dual/ Single *2
MPPT mode
Connection type
16 pairs of 8-14 AWG
fuse holder
1-3/0 AWG terminal
block for 2 MPPTs
18 pairs of
MC4 connector
Type II SPD
15A string fuses
DC switch
String monitoring
AC Output
Max. output power
83 kW
Max. output current
100 A
Rated voltage
3 Ph 480V Δ
Operating voltage range
±10%
Operating frequency range
Power factor
3 Ph 480V Δ or Y
50/60Hz ± 5Hz
1 at rated power, 0.8 ind ~ 0.8 cap adjustable
Type II SPD
Protection
< 3%
THD
Connection type
1-2/0 AWG terminal block
Night time consumption
<3W
*1 The max withstand voltage is 1100Vdc. (inverter stop output when input is over 1000Vdc)
*2 Single MPPT mode is available only for M80U_121 version.
: Available
: Not Available
82
Technical Data
Model
M80U_120
M80U_121
M80U_122
Efficiency
Peak Effieiency
98.8 %
Euro Effieiency
98.5 %
CEC Effieiency
98.5 %
Information
Communication port
RS-485
Display
20 x 4 LCD
Regulation
UL 1741, UL 1998, IEEE 1547, IEEE 1547.1
CSA C22.2
EN 61000-6-2, EN 61000-6-3, IEC 62109-1/-2
General Data
Operating temp. range
-25~60℃
Protection Level
NEMA 4X
Operating elevation
< 3000 m
Cooling
Forced air cooling plus Smart Fans control
Dimension (W x H x D) (in)
Weight (lb)
24.2 x 35.4 x 10.8
180.6
171.8
Table 7-1 : Specifications for M80U
83
24.2 x 37.4 x 10.8
185.2
Technical Data
Model
M60U_121
M60U_120
M60U_122
DC Input
Max. input power
68 kW
Rcommended PV power
82 kW
Occasionally maximum voltage
1100 V *
Operating voltage range
200 - 1000 V
Start voltage
> 250 V
MPP voltage, rated power
520 - 800 V
710 V
Rated voltage
2
MPP tracker
Max. input current /
Each MPPT
Connection type
120 / 60A
12 pairs of 8-14 AWG
fuse holder
1-3/0 AWG terminal
block for 2 MPPTs
12 pairs of
MC4 connector
Type II SPD
15A string fuses
DC switch
AC Output
Max. output power
66 kW
Max. output current
80 A
Rated voltage
3 Ph 480V Δ
Operating voltage range
±10%
Operating frequency range
Power factor
3 Ph 480V Δ or Y
50/60Hz ± 5Hz
1 at rated power, 0.8 ind ~ 0.8 cap adjustable
Protection
Type II SPD
THD
< 3%
Connection type
1-2/0 AWG terminal block
Night time consumption
<3W
* The max withstand voltage is 1100Vdc. (inverter stop output when input is over 1000Vdc)
About 1000Vdc above application, please refer to appendix.
84
: Available
: Not Available
Technical Data
Model
M60U_120
M60U_121
M60U_122
Efficiency
Peak Effieiency
98.8 %
Euro Effieiency
98.5 %
CEC Effieiency
98.5 %
Information
Communication port
RS-485
Display
20 x 4 LCD
Regulation
UL 1741, UL 1998, IEEE 1547, IEEE 1547.1
CSA C22.2
EN 61000-6-2, EN 61000-6-3, IEC 62109-1/-2
General Data
Operating temp. range
-25~60℃
Protection Level
NEMA 4X
Operating elevation
< 3000 m
Cooling
Forced air cooling plus Smart Fans control
Dimension (W x H x D) (in)
Weight (lb)
24.2 x 35.4 x 10.8
180.6
171.8
Table 7-2 : Specifications for M60U
85
24.2 x 37.4 x 10.8
185.2
Technical Data
P/P*
P*=80kW
115 %
110 %
105 %
100 %
95 %
90 %
85 %
80 %
600V
700V
800V
75 %
70 %
65 %
60 %
55 %
50 %
25
30
35
40
45
50
Figure 7-1 : Thermal Derating curve of M80U
86
55
60
http://www.delta-americas.com/solarinverters
Delta Products Corporation
15700 Don Julian Road
City of Industry, CA 91745
Sales Email:
[email protected]
Support Email: [email protected]
Sales Hotline: 1-877-440-5851 or 1-626-369-8021
Fax:
1-626-709-5896
Support Hotline: 1-877-442-4832
Support (Intl.) : 1.626.369.8019
Mondays to Fridays from 8:30 am to 5 pm (apart from Holidays)
Version 1.02 | 2016 | Nov.