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M70A
Delta M70A User Manual
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7 Installation
Connecting the communication card
Installation and Operation Manual for Solar Power Inverter M70A
EU V1.1 EN 2020-02-20
70
1.1.1.1
W
iring for a single inverter
1.
Connect the DA
T
A+ wire to terminal 5 and the DA
T
A– wire
to terminal 6.
2.
Set the DIP
switch for the RS485 termination resistor
(DIP
2) to the
ON
position.
69
71
Table of Contents
Default Chapter
3
Table of Contents
3
1 About this Manual
6
Purpose of this Manual
6
Target Audience of this Manual
6
How to Use this Manual
6
Warning Notices and Warning Symbols
7
Writing and Labeling Conventions
7
2 Basic Safety Instructions
8
3 Intended Purpose
9
4 Product Overview
10
Scope of Delivery
10
Inverter
10
Sub-1G Antenna
11
Accessories to be Ordered Separately
11
Overview of Components and Connections
12
Leds
14
AC-Side Components
15
AC Cable Gland
15
AC Connection Terminal
16
Type-2 AC Surge Protection Devices
16
DC-Side Components
17
DC Connector Panel
17
DC Isolating Switches
18
Type 2 DC Surge Protection Devices
19
Communication Connection
19
Grounding Connection
20
External Grounding Connection
20
Internal PE Connection
21
Cooling System
21
Air Inlet, Air Outlet and Fan Module
21
Internal Fans
22
Internal Heat Sinks
22
Sub-1G Antenna
23
Wi-Fi Module
23
Type Plate and Other Markings
24
5 Planning the Installation
26
Installation Location
26
Requirements for the Wall or Mounting System
26
Mounting Alignment
26
Outdoor Installations
26
Lifting and Transporting the Inverter
26
Installation Clearances
27
Characteristic Curves
29
Dimensions
33
Grid Connection (AC)
34
Important Safety Instructions
34
Residual Current Circuit Breaker
34
Integrated Residual Current Monitoring Unit
34
AC Surge Protection Devices
34
Permissible Grounding Systems
34
Grounding the Inverter
35
Requirements for the Grid Voltage
36
Special Tools Required
36
Notes on Calculating the Cable Cross-Section
36
AC Terminal Block Specifications
36
Specification for Copper Cable
36
Specification for Aluminum Cable
36
Handling Aluminum Conductors During Installation Work
36
Instructions Regarding Selection and Utilization of Al-Cu Compression Joints
37
Connecting the Solar Modules (DC)
37
Safety Precautions
37
Special Tools Required
38
Polarity of the DC Voltage
38
DC Cable Requirements
38
Connection of the Module Strings
39
Mains and System Protection
40
Device Communication and System Monitoring
41
Introduction
41
Communication Card
41
Communication Cable Requirements
42
Cable Gland for the Communication Connection
42
Connection of a Data Logger Via RS485
42
Connection of a DC1 Data Collector from Delta
43
Connecting an External Alarm Unit
44
Connecting a Ripple Control Receiver
45
External Power-Off
45
Connecting a PC
46
Connecting to a Mobile Device
46
Use of Combined Type 1+2 DC Surge Protection Devices
47
6 Planning the Commissioning
48
Introduction
48
Commissioning Options
48
Commissioning Software
48
Delta Service Software (DSS)
48
Mydeltasolar App with Direct Connection to Inverter
48
Mydeltasolar App with DC1 Data Collector from Delta
48
7 Installation
49
Safety Precautions
49
Sequence of Installation and Commissioning Steps
50
Mounting the Inverter
51
Wall Mounting (Suspended)
51
Grounding the Inverter Housing
54
Grounding Via the Outer Grounding Screw
54
Grounding Via the PE Screw of the AC Connection
55
Preparing Electrical Installation
56
Installing the Type 1+2 Combined DC Surge Protection Devices before Commissioning (Optional)
60
Connecting the Communication Card
64
Connections on the Communication Card
64
Threading the Communication Cable
65
Connecting a Data Logger Via RS485
67
Connecting an External Alarm Unit
74
Connecting a Ripple Control Receiver
75
Connecting the External Power-Off (EPO)
75
Connecting a PC Via RS485 (Optional)
76
Installing the Sub-1G Antenna (Optional)
77
Installing the Wi-Fi Module before Commissioning (Optional)
80
Connecting to the Grid (AC)
84
Specification for Copper Cable
84
Specification for Aluminum Cable
84
AC Cable Gland
85
Connection Examples
87
Connecting the Solar Modules (DC)
88
Completing Electrical Installation
89
8 Commissioning
92
Prerequisites for Commissioning
92
Commissioning with the Commissioning Software
92
Commissioning Troubleshooting
95
Commissioning with the Delta Service Software (DSS)
97
Commissioning with the Mydeltasolar App
97
Direct Connection between Mobile Device and Inverter
97
Mobile Device Connected to Inverter Via DC1 Data Collector
97
9 Error Events and Troubleshooting
98
Error
99
Warnings
100
Faults
101
10 Maintenance
104
Safety Instructions
104
Periodic Maintenance
105
Replacing Components
105
Making Preparations for Maintenance Work - Disconnecting the Inverter from the Grid (AC) and Solar Modules (DC)
106
Clean/Replace Internal Fan 1
112
Clean/Replace Internal Fan 2
116
Cleaning/Replacing the Fan Module
121
Cleaning the Air Outlets
125
Replacing the DC Surge Protection Devices
127
Replacing the AC Surge Protection Devices
132
Replacing the Sub-1G Antenna
136
Finishing the Maintenance Work - Connecting the Inverter to the Grid (AC) and Solar Modules (DC)
139
11 Technical Data
144
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Delta M70A Specifications
General
Brand
Delta
Model
M70A
Category
Inverter
Language
English
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