Delta RPI153FA0E0000, RPI203FA0E0000 Installation And Operating Manual
RPI M15A
RPI M20A
Installation and Operating Manual
Europe generalUnited Kingdom
Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
2
This manual applies to the following inverter models:
● RPI M15A
● RPI M20A
with model numbers:
RPI153FA0E0000, RPI203FA0E0000
and
with rmware versions:
DSP: 2.24 / RED: 1.60 /COMM: 2.36
The model number is located on the type plate for the inverter.
The rmware versions are listed on the display in the Inverter
Information menu.
© Copyright – Delta Energy Systems (Germany) GmbH – All
rights reserved.
This manual is intended for use by tters.
The information contained in this manual may not be reproduced
without prior written consent from Delta Energy Systems. The
information contained in this manual may not be used for any
purpose that is not directly connected with the use of the inverter.
All information and specications are subject to change without
prior notice.
If you should detect discrepancies between the descriptions in
this manual and the information on the inverter display, please
download the version of the manual that corresponds to the rmware version of your inverter from www.solar-inverter.com.
Delta Energy Systems (Germany) GmbH
Tscheulinstraße 21
79331 Teningen
Germany
3
Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
Contents
Contents
1. About this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.1 Purpose of this manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.2 Target group of this manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.3 Warning notices and warning symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.4 Writing and identication conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
2. Basic safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3. Intended use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
4. Product overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.1 Scope of delivery. . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
4.2 Overview of components and connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.3 Display, buttons, status LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.4 Electrical terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.4.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.4.2 Grounding connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.4.3 AC terminal (AC OUTPUT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.4.4 Terminal for RS485, dry contacts and external power off (RS485) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.4.5 DC disconnector (DC SWITCH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.4.6 DC terminals (DC INPUT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.5 Fans and air outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.6 Mounting holes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.7 Information on the type plate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5. Operating behaviour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.1 General mode of operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.2 MPP tracking. . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.3 Anti-islanding device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.4 Temperature control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.5 Inuence of DC input voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.6 Functions for inuencing the operating behaviour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5.7 Power grid imbalance compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
6. Planning the installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.1 Installation location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.2 Mounting position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
6.3 Outside installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.4 Environmental conditions and air circulation. . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . 24
6.5 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
6.6 Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
6.7 AC connection (grid) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
6.8 DC connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.8.1 Symmetric and asymmetric conguration of the DC inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
6.8.2 Separate and parallel connected DC inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6.8.3 Connecting to ungrounded solar modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
6.8.4 Connecting to grounded solar modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
6.8.5 Connecting the DC strings to the DC inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
6.9 Connecting to a data logger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.10 Dry contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.11 Connecting a ripple control receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.12 Using an external grid and system protection device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
6.13 Connecting a PC to the inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
6.14 What you need . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.14.1 To assemble the inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
6.14.2 To connect the inverter to the grid (AC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
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Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
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6.14.3 To connect the inverter to the solar modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
6.14.4 To ground the inverter housing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.14.5 To wire up the RS485 and the dry contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6.14.6 To connect a PC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
6.14.7 Other parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
7. Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . 45
7.1 Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
7.2 Sequence of installation steps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
7.3 Installing the inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
7.4 Grounding the inverter housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
7.5 Connecting a data logger via RS485. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
7.5.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
7.5.2 Wiring a single inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7.5.3 Wiring several inverters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.6 Connecting the dry contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
7.6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
7.6.2 Wiring dry contacts with no 12 V
DC
supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
7.6.3 Wiring dry contacts with an internal 12 V
DC
supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
7.7 Connecting the external power off (EPO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
7.7.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
7.7.2 Cabling the external power off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
7.8 Connecting to the grid (AC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
7.9 Connecting to the solar modules (DC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
7.10 Attaching warning labels to the inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7.11 Connecting a PC via RS485 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
8. Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
9. Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
9.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
9.2 Display language. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . 73
9.3 Display contrast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
9.4 Display brightness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
9.5 Automatic switch-off of display illumination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
9.6 Date . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
9.7 Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
9.8 Baud rate for RS485 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
9.9 Inverter ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
9.10 CO
2
savings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
9.11 Currency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
9.12 Insulation mode and insulation resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
9.13 Reconnection time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
9.14 Ramp-up power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
9.15 Dry contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
9.16 External power off (EPO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
9.17 AC connection type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
9.18 Country/Grid type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
9.19 Residual current monitoring unit (RCMU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108
9.20 DC injection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
9.21 Resetting the inverter to default settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
9.22 Active power limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
9.23 Controlling the power by means of frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
9.24 Constant cos φ. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
9.25 Cos φ (P). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
9.26 Constant reactive power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
9.27 Q (U) – Reactive power by means of voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 134
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9.28 FRT - Fault ride through . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
10. Statistics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
10.1 Where can I nd what information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
10.2 Standard information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
10.3 Power meter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
10.4 Energy log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
10.5 Event log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
10.6 Inverter information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
11. Error messages and troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
11.1 Errors. . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
11.2 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
11.3 Malfunctions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 151
12. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
12.1 Regular checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
12.2 Cleaning/replacing fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 154
12.3 Cleaning air outlets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
13. Shutdown, storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
14. Technical data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
1 About this manual
Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
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1. About this manual
1.1 Purpose of this manual
This manual is a component part of the inverter and will assist
you during the installation, commissioning and operation of the
inverter.
Read this manual before starting work on the inverter.
Always follow the safety instructions and work instructions in this
manual. In this way you will make sure that the inverter can be
safely installed, commissioned and operated.
Keep this manual in a safe place close to the inverter so that it
will be readily available when working on the inverter.
Delta Energy Systems is not liable for damage arising from noncompliance with the safety instructions and work instructions in
this manual.
1.2 Target group of this manual
This manual is aimed at tters who are trained and approved for
the installation, commissioning and operation of solar inverters in
grid-connected solar installations.
1.3 Warning notices and warning symbols
In this manual, the following warning notices and warning symbols are used to describe potential dangers and measures to
reduce these dangers.
Always follow the instructions that are given in these warning
notices.
Warning levels
DANGER
Indicates a dangerous situation which, if not avoided, will
always result in death or severe injuries.
WARNING
Indicates a dangerous situation which, if not avoided,
may result in death or severe injuries.
CAUTION
Indicates a dangerous situation which, if not avoided,
may result in slight or moderate injuries.
ATTENTION
Indicates potential material damage that the inverter
may cause to other property.
A Notice contains information on the efcient use of the
inverter or of this manual.
If required, the warning notices are supplemented by warning
symbols indicating the source of the danger.
High voltages or currents
Hot surfaces
Heavy weight
General danger
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Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
1 About this manual
1.4 Writing and identication conventions
Certain contents in this manual are specially identied.
Identication of work instructions
Work instructions that must be carried out in a specic order are
numbered. Numbered work instructions must always be carried
out in the specied order.
1. First work step
→ If required, the result of the work step is described here.
This serves as a check that the work step has been
performed correctly.
2. Second work step
3. Third work step
If a work instruction consists of only a single work step or if the
work steps may be carried out in any order, the work steps are
identied as follows:
► Work step
► Work step
Identication of parts of the inverter
Buttons:
ENT
.
LEDs: A
lArm LED
LED Meaning
LED is permanently lit.
LED is ashing.
LED is off.
Identication of information shown on the display
Names of menus or menu entries: User settings
Names of parameters: Cos phi
2 Basic safety instructions
Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
8
2. Basic safety instructions
● In order to meet the safety requirements of IEC 62109-5.3.3
and to avoid personal injury and material damage, the in-
verter must be installed and operated in accordance with the
safety instructions and work instructions in this manual. Delta
Energy Systems is not liable for damage arising from noncompliance with the safety instructions and work instructions
in this manual.
● The inverter may only be installed and commissioned by
tters who are trained and approved in the installation and
commissioning of grid-connected solar inverters.
● All repairs to the inverter must be carried out by Delta Energy
Systems. Otherwise the guarantee will be void.
● Warning notices and warning symbols that have been at-
tached to the inverter by Delta Energy Systems must not be
removed.
● The inverter has a high leakage current. The grounding cable
must be connected before putting the inverter into operation.
● Do not disconnect any cables when the inverter is under
load, as there is a risk of arcing.
● To prevent damage caused by lightning strikes, observe the
regulations that are applicable in your country.
● The surface of the inverter can become very hot in operation.
Do not touch any part of the inverter except for the display
unless you are wearing safety gloves.
● The inverter is very heavy. The inverter must be lifted and
carried by at least two people.
● Only SELV-compliant (EN 60950) devices may be connected
to the RS485 ports.
● To ensure protection class IP65, all connections must be
adequately sealed. Unused connectors must be sealed with
cover caps.
DANGER
Electric shock
During operation there is a potentially lethal voltage present inside the inverter. Even after the
inverter has been disconnected from all power
sources, this voltage is present in the inverter for
up to a further 80 seconds.
Therefore always perform the following work
steps before working on the inverter
1. Turn the DC disconnector to the OFF posi-
tion.
2. Disconnect the inverter from all AC and DC
sources and make sure that none of the connections can be inadvertently re-established.
3. Wait at least 80 seconds to allow the internal
capacitors to discharge.
DANGER
Electric shock
There is a potentially lethal voltage present
on the DC terminals of the inverter. The solar
modules start to produce current as soon as light
falls on them. This occurs even if the light is not
falling directly on the solar modules.
► Never disconnect the inverter from the solar
modules when it is under load.
► Turn the DC disconnector to the OFF posi-
tion.
► Disconnect the connection to the grid so that
the inverter cannot supply any energy to it.
► Disconnect the inverter from all AC and DC
sources. Make sure that none of the connections can be inadvertently re-established.
► Protect the DC cables from being inadvert-
ently touched.
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Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
3 Intended use
3. Intended use
The inverter may only be used for its intended purpose.
The intended use of the inverter is dened as follows:
● Use in static solar installations that are connected to the
public power grid, to convert the direct current generated
by the solar modules in the solar installation into alternating
current which is fed into the public power grid.
● Use in compliance with the power values and ambient
conditions stipulated by the manufacturer.
The following uses are considered to be not as intended:
● Use in isolated “island” operation, i.e., with no connection to
the public power grid. The inverter has functions to prevent
island operation.
● Use in mobile solar installations
3 Intended use
Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
10
Deschap RPI M15A M20A EC_Decl EN 20151.doc
EC Declaration of Conformity
Producer: Delta Energy Systems (Germany) GmbH
Address: Tscheulinstr. 21, 79331 Teningen, Germany
Product
Description: Solar Inverter for Grid operation
Model:
RPI-M15A, RPI-M20A
The product described above in the form as delivered is in conformity with the provisions of
the following European Directives:
2004/108/EC Council Directive on the approximation of the laws of the Member States relating
to electromagnetic compatibility
EN 61000-6-3:2007+A1:2011 / EN 61000-6-4:2007+A1:2011
EN 61000-3-11:2000 / EN 61000-3-12:2005
EN 61000-6-2:2005 / EN 61000-6-1:2007
EN 61000-4-2:2009 /EN 61000-4-3:2010
EN 61000-4-4:2012 /EN 61000-4-5:2006
EN 61000-4-6:2009
EN 61000-4-8:2010
EN 61000-4-11:2004
2006/95/EC Council Directive on the approximation of the laws of the Member States related
to electrical equipment designed for use within certain voltage limits
IEC 62109-1:2010, IEC 62109-2:2011
Teningen, Jan 16th 2015
Patrick Schahl Andreas Hoischen
Product
Management
LOB SPE
Head of LOB
SPE
Name, Fu nction
Signature
Name, Fu nction
This declaration certifies the conformity to the specified directives but contains no assurance of properties. The
safety documentation accompanying the product shall be considered in detail.
11
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4 Product overview
4. Product overview
4.1 Scope of delivery
Part Quantity Picture/Description Part Quantity Picture/Description
Inverter 1
AC plug 1
Amphenol C16-3
Mounting plate 1
Installation
quick start and
basic safety
instructions
1
Installationsk urz anleitung
RPI M15A
RPI M20A
Deutschland Ö sterreich Schweiz
DC plugs
4
Multi-contact MC4 for DC+ for
4/6 mm
2
(32.0017P0001-UR)
4
Multi-contact MC4 for DC– for
4/6 mm
2
(32.0016P0001-UR)
Before starting the installation work, check the
delivery for completeness and all components for
damage.
Do not use any damaged components.
Keep the packaging.
4 Product overview
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12
4.2 Overview of components and connections
1
2
3
4
5
6 6
Fig. 4.1: Overview of components and connections
Component/Connection Description
1 Display, buttons, status LEDs
Refer to “4.3 Display, buttons, status LEDs”, page 13
2 Air outlets
Refer to “4.5 Fans and air outlets”, page 17
3 Electrical terminals
Refer to “4.4 Electrical terminals”, page 14
4 Type plate
Refer to “4.7 Information on the type plate”, page 19
5 Fan
Refer to “4.5 Fans and air outlets”, page 17
6 Mounting holes
Refer to “4.6 Mounting holes”, page 18
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Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
4 Product overview
4.3 Display, buttons, status LEDs
20
15
10
5
0
4 8 12 16 20 24
kW 2013.06.21
kWh
kWh kg
2013.06.21
Stunde
E-Stunde:
E-Tag: Ersparnis CO2:
Beenden
Jahr
21. Jun 2013 09:30
Ertrag - Tag
Component Description Use
LEDs
S
tAtuS Multi-coloured LED; indicates the current operating status.
Buttons
EX IT
Exit
Exit the current menu.
Cancel the setting of a parameter. Changes are not adopted.
Down
Move down through the menu.
Reduce the value of a settable parameter.
Up
Move up through the menu.
Increase the value of a settable parameter.
ENT
Enter
Select a menu entry.
Open a settable parameter for editing.
Finalize the setting of a parameter. Changes are adopted.
4 Product overview
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14
4.4 Electrical terminals
4.4.1 Overview
1 2 3 4 5
Fig. 4.2: Overview of the electrical terminals
Component/Connection Identication on the
inverter
Description
1 Grounding connection
Refer to “4.4.2 Grounding connection”, page 15
2 AC terminal AC OUTPUT
Refer to “4.4.3 AC terminal (AC OUTPUT)”, page 15
3
Connector for RS485, dry contacts and
digital inputs
RS485
Refer to “4.4.4 Terminal for RS485, dry contacts and external
power off (RS485)”, page 16
4 DC disconnector DC SWITCH
Refer to “4.4.5 DC disconnector (DC SWITCH)”, page 16
5 DC terminals DC INPUT
Refer to “4.4.6 DC terminals (DC INPUT)”, page 17
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Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
4 Product overview
4.4.2 Grounding connection
Fig. 4.3: Position of the grounding connection on the inverter
The inverter housing can be grounded by means of the grounding connection.
M4 screw, spring washer, at washer and serrated washer are
tted to the inverter.
4.4.3 AC terminal (AC OUTPUT)
Fig. 4.4: Position of the AC terminal on the inverter
The inverter is connected to the public grid by means of the AC
terminal.
Purpose:
● To supply alternating current to the public grid.
● To supply power to the display when no supply voltage is
available from the solar modules.
Usable grid types
● Grids with 3 phases and a neutral conductor: 3P4W
(L1, L2, L3, N, PE)
● Grids with 3 phases, no neutral conductor: 3P3W
(L1, L2, L3, PE).
Required plug type:
Amphenol C16-3 (C016 20E004 800 2)
The AC plug is included in the delivery.
4 Product overview
Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
16
4.4.4 Terminal for RS485, dry contacts and external power off (RS485)
Fig. 4.5: Position of the RS485 connector on the inverter
Available connections:
Connection Connection type
2x RS485 (DATA+ and DATA–) Terminal block
1x VCC (12 V, 0.5 A) Terminal block
1x dry contacts Terminal block
1x external power off (EPO) RJ45
4.4.5 DC disconnector (DC SWITCH)
Fig. 4.6: Position of the DC disconnector on the inverter
The inverter is disconnected from the solar modules when the
DC disconnector is in the OFF position.
The inverter is connected to the solar modules when the DC
disconnector is in the ON position.
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Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
4 Product overview
4.4.6 DC terminals (DC INPUT)
Fig. 4.7: Position of the DC terminals on the inverter
The solar modules are connected to the DC terminals.
Required plug type:
● Multi-contact MC4 32.0017P0001-UR for DC+
● Multi-contact MC4 32.0016P0001-UR for DC–
4 pairs of DC plugs are included in the delivery.
4.5 Fans and air outlets
Fig. 4.8: Position of the fans on the inverter
Fig. 4.9: Position of the air outlets on the inverter
Ambient air is drawn in by the fans and fed through the inverter
for cooling. The warmed air is returned to the environment via the
air outlets.
4 Product overview
Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
18
4.6 Mounting holes
Fig. 4.10: Position of the mounting holes on the inverter
The mounting holes are used to bolt the inverter to the wall or to
the mounting system.
The mounting holes are a t for M6 bolts.
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Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
4 Product overview
4.7 Information on the type plate
Fig. 4.11: M15A type plate Fig. 4.12: M20A type plate
Symbols on the type plate
Symbol Description
80 seconds
Potentially lethal electric shock
When the inverter is in operation, there is a potentially lethal voltage inside which persists for a
further 80 seconds after the power supply is disconnected.
Never open the inverter housing. The inverter does not contain any parts that can be serviced or
repaired by the operator or the tter. Opening the inverter housing will invalidate the guarantee.
Before starting any work on the inverter, read the supplied manual and follow the instructions
contained therein.
Hot surfaces.
The inverter housing can become very hot during operation.
The inverter does not contain a transformer.
The inverter meets the Australian standard for electrical safety and the EMC standard. Applies
only to Australia and New Zealand.
4 Product overview
Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
20
Information on the type plate
M15A M20A
Solar inverter Solar inverter This is a solar inverter.
Model: RPI M15A Model: RPI M20A Delta model name
Part number: RPI802FA0E1000 Part number: RPI103FA0E1000 Delta part number
DC input DC input
200-1000Vdc 200-1000Vdc DC input voltage range
MPPT 355-820Vdc MPPT 470-820Vdc
MPP input voltage range at full power (with symmetrically congured DC inputs)
1000Vdc max 1000Vdc Maximum DC input voltage
22A*2 max 22A*2 max Maximum DC input current (22 A on each of DC1 and DC2)
AC Output AC output
220/380, 230/400 Vac 220/380, 230/400 Vac Nominal AC voltage
50/60 Hz 50/60 Hz Nominal AC frequency
15kVA nom 20kVA nom Nominal reactive power
15.75kVA max 21kVA max Maximum reactive power
24A max 32A max Maximum AC current
3P3W or 3P4W 3P3W or 3P4W
The inverter can be connected to 3-phase grids with no neutral
conductor (3P3W, 3 phases + PE) and 3-phase grids with a neutral conductor (3P4W, 3 phases + N + PE).
cosφ 0.8ind~0.8cap cosφ 0.8ind~0.8cap Setting range of the cos φ displacement factor
IP Code: IP65 (Electronics) IP Code: IP65 (Electronics) Protection class for the internal electronics according to EN 60529
Protective Class: I Protective Class: I Protection class according to EN 61140
Overvoltage Category: III Overvoltage Category: III Overvoltage category according to IEC 62109-1
Assembled in China Assembled in China Made in China
VDE 0126-1-1/A1 VDE 0126-1-1/A1 The inverter meets the requirements of VDE 0126-1-1/A1.
VDE-AR-N 4105 VDE-AR-N 4105 The inverter meets the requirements of VDE-AR-N 4105.
IP65 IP65 Protection class IP65
CE marking. With this marking, Delta declares that the inverter
meets the stipulations of the applicable EU directives.
21
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5 Operating behaviour
5. Operating behaviour
5.1 General mode of operation
The inverter converts the direct current generated by the solar
modules into alternating current which is then fed into the public
grid.
5.2 MPP tracking
MPP tracking is an automatic function which continuously
ensures that the inverter is always operating in the maximum
output range possible under the current ambient conditions. The
DC input voltage is used as the reference for this.
The inverter has 2 MPP trackers, one for each of DC1 and DC2.
The solar modules that are connected to the two DC inputs do
not need to have the same output. Within certain limits, module
strings with differing outputs can be connected (see “14. Technical data” page 162).
5.3 Anti-islanding device
In the event of a grid failure, the integrated anti-islanding device
shuts the inverter down.
5.4 Temperature control
The specic values for the technical parameters described in
this section can be found in the chapter “14. Technical data”
page 162.
The inverter has two operating temperature ranges that are
important for its operating behaviour.
● Operating temperature range
● Operating temperature range without limiting
The operating temperature range is greater than the operating
temperature range without limiting.
If the ambient temperature lies within the operating temperature
range without limiting, the inverter works at the maximum possible output power. If the ambient temperature is higher, but still
within the operating temperature range, the output power will be
continually reduced with rising ambient temperature. If the ambient temperature rises above the operating temperature range,
the AC output will be switched off and the inverter will no longer
feed energy into the public grid.
The inverter is cooled by means of fans.
5.5 Inuence of DC input voltage
The specic values for the technical parameters described in
this section can be found in the chapter “14. Technical data”
page 162.
The maximum DC input voltage must never be exceeded. Measure the DC input voltage and use an overvoltage protector on the
DC side to prevent higher DC input voltages. The maximum open
circuit voltage occurs at the lowest ambient temperatures that
can be assumed.
The DC input voltage range is used to dene the DC input voltages for which the inverter will supply power to the public grid.
The MPP input voltage range is used to dene the DC input voltages for which the MPP trackers are activated.
The MPP input voltage range at full power is used to dene the
DC input voltages for which the inverter can deliver the maximum
output power. However the actual output power still depends on
other conditions such as, for example, the ambient temperature.
5.6 Functions for inuencing the operating
behaviour
The inverter provides various functions which can be used to
inuence the operating behaviour.
● Active power control
● Reactive power control
● Insulation and grounding monitoring
A detailed description of these functions can be found in the
chapter “9. Settings” page 72.
5.7 Power grid imbalance compensation
The inverter has an integrated power grid imbalance compensator. This ensures that the supplied power is always distributed
evenly across all the phases.
6 Planning the installation
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22
6. Planning the installation
This chapter is intended only as an aid to planning the installation work. The implementation
of the installation work and the associated dangers are described in the chapter “Installation”.
6.1 Installation location
Fig. 6.1: Installation location – condition of the wall
► The inverter is very heavy. The wall must be able to bear the
heavy weight of the inverter.
► Always use the mounting plate that is supplied with the
inverter.
► Use mounting materials (wall plugs, screws, etc.) that are
suitable for the wall or the mounting system as well as the
heavy weight of the inverter.
► To prevent malfunctions, mount the inverter on a vibration-
free wall.
► When the inverter is used in residential areas or in buildings
with animals, possible noise emissions may cause a disturbance. Therefore take care when choosing the mounting
location.
► Mount the inverter on a re-resistant wall.
✔
✘ ✘
?
?
?
?
Fig. 6.2: Mounting location – installation height
► Mount the inverter so that the information on the display can
be read without difculty and the buttons can be operated.
6.2 Mounting position
Fig. 6.3: Mounting position
► Mount the inverter vertically.
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Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
6 Planning the installation
6.3 Outside installations
Fig. 6.4: Outside installations
► The inverter is classied IP65 and can be installed inside and
outside. Nevertheless, the inverter should be protected from
direct solar irradiation, rain and snow by means of a roof. If,
for example, the inverter becomes too hot as a result of solar
irradiation, the output will be reduced. This is normal operating behaviour for the inverter and is necessary to protect the
internal electronics.
6 Planning the installation
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24
6.4 Environmental conditions and air circulation
^
>30 cm >30 cm
>50 cm
>20 cm
>30 cm
Fig. 6.1: Mounting clearances and air circulation
► Ensure adequate air circulation. Warm air must be able
to escape upwards. Leave sufcient space around each
inverter.
► Do not install inverters directly one above another as this
might cause mutual heating.
► Take note of the operating temperature range without limit-
ing and the operating temperature range. If the operating
temperature range without limiting is exceeded, the inverter
limits the AC power that is fed into the grid. If the operating
temperature range is exceeded, the inverter stops supplying
the grid. This is normal operating behaviour for the inverter
and is necessary to protect the internal electronics.
► In areas with many trees or meadows, pollen can block the
air inlets and outlets and impede the air ow.
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Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
6 Planning the installation
6.5 Characteristics
0.70
0.75
0.50
0.55
0.60
0.65
0.80
0.85
0.90
0.95
1.00
1.05
1.10
3025 35 40 45 50 55 60
P/Pn cos φ 0.9
820 V
DC
635 V
DC
355 V
DC
Ambient temperature [ °C]
Fig. 6.2: M15A characteristic “Power limiting as a function of ambient temperature, cos φ = 0.90”
6 Planning the installation
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0.70
0.75
0.50
0.55
0.60
0.65
0.80
0.85
0.90
0.95
1.00
1.05
1.10
3025 35 40 45 50 55 60
P/Pn cos φ 0.95
820 V
DC
635 V
DC
355 V
DC
Ambient temperature [ °C]
Fig. 6.3: M15A characteristic “Power limiting as a function of ambient temperature, cos φ = 0.95"
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Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
6 Planning the installation
0.70
0.75
0.50
0.55
0.60
0.65
0.80
0.85
0.90
0.95
1.00
1.05
1.10
3025 35 40 45 50 55 60
P/Pn cos φ 1.00
820 V
DC
635 V
DC
355 V
DC
Ambient temperature [ °C]
Fig. 6.4: M15A characteristic “Power limiting as a function of ambient temperature, cos φ = 1.0
6 Planning the installation
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0.70
0.75
0.50
0.55
0.60
0.65
0.80
0.85
0.90
0.95
1.00
1.05
1.10
3025 35 40 45 50 55 60
P/Pn cos φ 0.9
820 V
DC
635 V
DC
470 V
DC
Ambient temperature [ °C]
Fig. 6.5: M20A characteristic “Power limiting as a function of ambient temperature, cos φ = 0.90”
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6 Planning the installation
0.70
0.75
0.50
0.55
0.60
0.65
0.80
0.85
0.90
0.95
1.00
1.05
1.10
3025 35 40 45 50 55 60
P/Pn cos φ 0.95
820 V
DC
635 V
DC
470 V
DC
Ambient temperature [ °C]
Fig. 6.6: M20A characteristic “Power limiting as a function of ambient temperature, cos φ = 0.95"
6 Planning the installation
Installation and Operating Manual for RPI M15A M20A Solar Inverter V1.0 2016-03-18
30
0.70
0.75
0.50
0.55
0.60
0.65
0.80
0.85
0.90
0.95
1.00
1.05
1.10
3025 35 40 45 50 55 60
P/Pn cos φ 1.00
820 V
DC
635 V
DC
470 V
DC
Ambient temperature [ °C]
Fig. 6.7: M20A characteristic “Power limiting as a function of ambient temperature, cos φ = 1.0
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