Delta RPI M30A_120 Specification sheet

RPI M30A_120 / M30A_121
Operation and Installation Manual
Grid-tie Transformerless Solar Inverter
The power behind competitiveness
www.deltaww.com
English 1
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155
䨾ḑᳫ㑅
䳿榒ᳫ㑅

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Table of Contents
1 General Information
1.1 About this Manual
1.2 Product Description
1.3 Additional Information
2 Product Overview
2.1 Unpack the Inverter
2.2 Checking Unit and Accessories
2.3 Product Label
2.4 Exterior Objects
3 Installation
4 Wiring
4.1 Preparation Before Wiring (M30A_120)
4.2 Preparation Before Wiring (M30A_121)
4.3 AC Grid Connection: 3-Phase+PE or 3-Phase+N+PE
4.3.1 Required Protective Devices and Cable Cross-sections
4.3.2 Permitted earthing systems
4.4 DC Connection from PV Array
4.5 Multiple Inverter Combinations
4.5.1 Three-Phase Parallel Combination System
4.5.2 Communication Module Connections
4.5.3 RS-485 Connection
4.5.4 EPO Function & Digital Input & DRMs
4.5.5 Dry Contact Connection
5 Turn On PV Inverter
5.1 LCD Flow Chart
5.2 First startup
5.2.1 Home Page
5.2.2 Power Meter
5.2.3 Energy Log
5.2.4 Event Log
5.2.5 Inverter Information
5.2.6 General Settings
5.2.7 Install Settings
5.2.7.1 Inverter ID
5.2.7.2 Insulation
5.2.7.3 Country
5.2.7.4 Grid Settings
5.2.7.5 Dry Contact
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3

5.2.7.6 PID
5.2.7.7 EPO
5.2.7.8 AC connection
5.2.7.9 Max. Power
5.2.8 Active / Reactive power
5.2.8.1 Power Limit
5.2.8.2 Power vs. Frequency
5.2.8.3 P(V)
5.2.8.4 Constant cosphi
5.2.8.5 Cosphi (P)
5.2.8.6 Constant Q
5.2.8.7 Q(V)
5.2.9 FRT (Fault ride through)
6 Maintenance
6.1 Replace Surge Protection Device (SPD)
6.2 Replace Internal String Fuse
6.3 Clean Fan
6.4 Replace Fan
6.5 Clean Air Inlets
7 Error message and Trouble Shooting
8 De-Commissioning
9 Technical Data
APPENDIX
Appendix A: I-V curve limitation
Appendix B: Torque List
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4

Figure 1-1 : Solar system operation illustration
Figure 2-1 : Unpack the inverter
Figure 2-2 : Packing list of M30A_120
Figure 2-3 : Packing list of M30A_121
Figure 2-4 : Product label
Figure 2-5 : Inverter’s exterior objects
Figure 2-6 : Input / output interface
Figure 3-1 : Mounting bracket dimension
Figure 3-2 : Recommended installation
Figure 3-3 : Screw the mounting bracket
Figure 3-4 : Attach to the bracket and fasten with screws
Figure 3-5 : Proper installation gap
Figure 3-6 : M30A Air flow
Figure 4-1 : Floating string with separate connection
Figure 4-2 : Force M30A_120 operate in parallel mode
Figure 4-3 : Minus grounding of M30A_120 with fuse
Figure 4-4 : Plus grounding of M30A_120 with fuse
Figure 4-5 : Floating string of M30A_121
Figure 4-6 : Plus or minus grounding wiring of M30A_121
Figure 4-7 : Wrong connection – 1
Figure 4-8 : Wrong connection – 2
Figure 4-9 : Wrong connection – 3
Figure 4-10 : Wrong connection – 4
Figure 4-11 : Striping the wires
Figure 4-12 : Cord end terminal
Figure 4-13 : Bi-metal sleeves
Figure 4-14 : AC plug illustration for M30A
Figure 4-15 : The rubber rings of AC plug
Figure 4-16 : DC Wiring illustration
Figure 4-17 : Three-phase parallel combinations
Figure 4-18 : Communication module
Figure 4-19 : Multi-inverter connection illustration
Figure 4-20 : EPO functions
Figure 4-21 : EPO & Digital input & DRMs parallel connection
Figure 4-22 : Dry contact port & Assignments
Figure 5-1 : Panel indicator
Figure 5-2 : Country and language settings for first startup
Figure 5-3 : Home page
Figure 5-4 : Power meter page
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5

Figure 5-5 : Energy log Page
Figure 5-6 : Event log Page
Figure 5-7 : Inverter information page
Figure 5-8 : General settings page
Figure 5-9 : Install settings page
Figure 5-10 : Inverter ID page
Figure 5-11 : Insulation page
Figure 5-12 : Country page
Figure 5-13 : Grid Settings page
Figure 5-14 : Dry Contact page
Figure 5-15 : PID function settings
Figure 5-16 : EPO page
Figure 5-17 : AC connection
Figure 5-18 : Max. Power page
Figure 5-19 : Active / Reactive power page
Figure 5-20 : Power Limit page
Figure 5-21 : Power vs Frequency page
Figure 5-22 : Power vs Frequency parameters
Figure 5-23 : P(V) page
Figure 5-24 : Constant cosphi page
Figure 5-25 : Cosphi (P) page
Figure 5-26 : Cosphi (P) page
Figure 5-27 : Constant Q parameters
Figure 5-28 : Q(V) page
Figure 5-29 : Q(V) parameters
Figure 5-30 : FRT page
Figure 5-31 : FRT Parameters
Figure 6-1 : Remove / Reassemble front cover
Figure 6-2 : Recognize the connectors
Figure 6-3 : Loosen the 6 screws
Figure 6-4 : Pull out the SPD unit
Figure 6-5 : Pull out the fuse
Figure 6-6 : Replace the fuse
Figure 6-7 : Disassembling fan panel
Figure 6-8 : Removal of a fan
Figure 6-9 : Removal of air outlets
)LJXUH0$7KHUPDO'HUDWLQJ&XUYHFRVij 
)LJXUH0$7KHUPDO'HUDWLQJ&XUYHFRVij 
)LJXUH0$7KHUPDO'HUDWLQJ&XUYHFRVij 
Appendix A : I-V curve limitation for fuse
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6

Table
Table 2-1 : Packing list of M30A_120
Table 2-2 : Packing list of M30A_121
Table 2-3 : Model name
Table 4-1 : Maximum current rating of each DC connector
Table 4-2 : Recommended upstream protection
Table 4-3 : AC input cable requirement
Table 4-4 : Maximum rating of input power
Table 4-5 : Cable size
Table 4-6 : Definition of RS-485 pin
Table 4-7 : Terminal resister setting
Table 4-8 : Definition of digital input & EPO functions
Table 4-9 : Definition of DRMs for Australia (AU 2015) and New Zealand (NZ 2016)
Table 5-1 : LED indicator
Table 5-2 : Dry Contact Trigger Setting
Table 7-1 : Error Message
Table 7-2 : Warning Message
Table 7-3 : Fault Message
Table 9-1 : Specifications for RPI M30A
Appendix B : Torque List
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7

Safety Instructions
This manual uses the following instructions for conveying important safety related
information.
DANGER!
- To avoid risk of electrical shock, do not open the solar inverter.
Death and serious injury will occur if this hazardous situation is not avoided.
WARNING：BURN HAZARD!
- The unit may reach high temperatures and the device surface can become hot.
Sufficient cooling time is necessary for optimal yield.
- Machine and equipment damage may occur if this hazardous situation is not
avoided.
CAUTION !
WARNING !
- Death and serious injury may occur if this hazardous situation is not avoided.
- Repair work on the device should ONLY be carried out by the manufacturer.
- No user serviceable parts inside.
- In Australia, installation and maintenance work shall be conducted by qualified
electrician and shall comply with Australian Regulations.
8

This manual is to provide the explanation and procedures for installing, operating,
maintaining, and troubleshooting of RPI M30A_120 / M30A_121 solar inverters.
This device is a 3-phase grid-tied solar inverter which does not support off-grid
functionality.
The operation of solar inverter is shown as the Figure 1-1.Inverters convert
the DC input power supplied from the PV Array into 3-phase AC output power
to Grid.
PID (Potential Induced Degradation) suppression function can provide longer
life of PV panel.
Figure 1-1 : Solar system operation illustration
For more detailed or other related product information, please visit
http://www.deltaww.com
PV Array Electrical GridSolar Inverter
3PH
AC Distribution
box
Surge arrestor
AC breaker
3 phase, N, PE
1 General Information
1.1 About this Manual
1.2 Product Description
1.3 Additional Information
General Information
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Figure 2-1 : Unpack the inverter
The unpacking procedure of RPI M30A_120 / M30A_121 is shown as Figure 2-1.
Unforeseeable events causing damage or movement may occur during shipment.
Please check following items upon receiving your inverter.
• Check the damage on the packaging.
• Check if all the accessories are in the package.
The standard accessories are shown in following tables and figures:
For RPI M30A_120, Please refer to Figure 2-2 and Table 2-1.
For RPI M30A_121, Please refer to Figure 2-3 and Table 2-2.
• Check the model number and the serial number on the packaging is identical
with the model number and serial number on the unit itself.
If there is any visible damage to the inverter/accessories or any damage to the
packaging, please contact your inverter supplier.
2 Product Overview
2.1 Unpack the Inverter
2.2 Checking Unit and Accessories
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Product Overview

Figure 2-2 : Packing list of M30A_120
RPI M30A_120
Object Qty Description
1 PV Inverter 1 pc
1 pc
1 pc
1 pc
RPI series solar inverter
2 User Manual
The Instruction to provide the information of safety,
Installation, specification, etc.
3 AC Plug
Mounting Bracket
Connector for AC connection
Wall mounting bracket to mount the solar inverter
on the wall.
4
5
DC Plug 8 sets Connector for DC connection
Table 2-1 : Packing list of M30A_120
①
②
⑤
④③
⑦⑥
※These products does not provide grounding fuse. Users can choose 1000V / 1A
Midget size grounding fuse if needed.
6 Holder 1 pc Holder for Grounding Fuse
7 Bus-bar 2 pcs Bus-bar for DC+ or DC- Parallel Connection.
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Product Overview

Figure 2-3 : Packing list of M30A_121
RPI M30A_121
Object Qty Description
1 PV Inverter 1 pc
1 pc
1 pc
1 pc
RPI series solar inverter
2 User Manual
The Instruction to provide the information of safety,
Installation, specification, etc.
3 AC Plug
Mounting Bracket
Connector for AC connection
Wall mounting bracket to mount the solar inverter
on the wall.
4
5
DC Plug 6 sets Connector for DC connection
Table 2-2 : Packing list of M30A_121
①
②
⑤④
③
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Product Overview

RPI M30A _121 RPI M30A _120
Please refer to Figure 2-4 for the location of product label. You can identify the
model number and the specifications by the information on the label.
RPI M30A_120 / M30A_121 series have 2 models. The differences between them
are having surge protection devices (SPD) and internal strings fuse or not.
For more detail information, please see the Table 2-3.
Figure 2-4 : Product label
Model Name Part Number
RPI303FA0E1000
RPI303FA0E1100
SPD
X
Internal Fuse
X
RPI M30A_120
RPI M30A_121
Table 2-3 : Model name
2.3 Product Label
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Product Overview

Display
Air inlet
Label
Input /
Output Interfaces
The Inverter’s exterior objects are shown in Figure 2-5. The detailed input /
output interfaces illustration is shown in Figure 2-6. Different models have
different number of DC input strings.
Figure 2-5 : Inverter’s exterior objects
2.4 Exterior Objects
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Product Overview

Figure 2-6 : Input / output interface
DC1 DC2
String1
String2
String3 String4
String5
String6
AC Connector
380/400Vac, 3Ph
Fan * 3
Manual
Switch
Communication
- RS-485 *2
- EPO *1
- Dry Contact *2
- Digital Input*6
RPI M30A _121
RPI M30A _120
AC Connector
380/400Vac, 3Ph
Fan * 3Manual
Switch
Communication
- RS-485 *2
- EPO *1
- Dry Contact *2
- Digital Input*6
DC1 DC2
String1
String2
String3
String4
String5
String6
String7
String8
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Product Overview

This unit is designed to be wall-mounted. Please ensure the installation is
perpendicular to the floor and the AC plug at the bottom. Do not install the device
on a slanting wall.
To mount the inverter on the wall, please follow the procedure below:
1. Screw the mounting bracket on the wall with 12 M6 Phillips head screws.
Please refer to Figure 3-3.
* Upper 6 screws must be locked at least.
2. Attach the inverter to the mounting bracket.
3. Fix the inverter with 2 M6 Phillips head screws.
Please refer to Figure 3-4.
3 Installation
- The unit should not be installed in direct sunlight.
CAUTION !
WARNING !
- Do not install the unit near or on flammable surfaces.
- Please mount the unit tightly on a solid / smooth surface.
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Installation

Figure 3-1 : Mounting bracket dimension
Figure 3-2 : Recommended installation
12-ĭ6.5
460.0
400.0
82.0 82.0 82.0 82.0 82.0 25.0
14.1
127.7
31.0
4-R10.0
30.0
105°
90
Not
Recommended
Not
Recommended
Keep >30 cm from floor and
water if installed this way
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Installation

14
30
3
30
97.8
192.8
129°
M6 Screw *6
M6 Screw *6
Wall
Figure 3-3 : Screw the mounting bracket
Figure 3-4 : Attach to the bracket and fasten with screws
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Installation

>30cm
>20cm
>50cm
>30cm
>30cm
Figure 3-5 : Proper installation gap
- The bracket supplied with the unit is specially designed and should be the only
mounting device used for the unit.
- It is recommended to install the inverter in a suitable location which offers
non-obscured and safe access, in turn ensuring easy access for service and
maintenance.
- Please leave an appropriate gap in between units when installing several solar
inverter systems as shown in Figure 3-5.
- Please install solar inverter at an eye level to allow easy observation for operation
and parameter setting.
- Ambient temperature -25° C~60° C. (power de-rating above 40° C)
CAUTION !
Figure 3-6 : M30A Air flow
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Installation

• M30A_120 has 15A DC fuse in each Plus and Minus DC connector, the maximum
current of each string should not exceed 10A.
• For model with fuses, PV arrays can connect to the inverter directly, but
parallel connection at external DC distribution box is not recommended due
to the limits of DC fuse. Please refer to Figure 4-1 for the detail wiring illustrations.
• If you want inverter working at parallel input mode (only 1 MPPT), please
install 2 bus bar kits in the inverter as shown in Figure 4-2. The outer wiring
at DC side is same as Figure 4-1.
• When grounding the solar array, an isolation transformer is required because
the RPI series does not have galvanic isolation between the DC-input and
AC-output. In addition, Users must install a 1000V/1A midget size grounding
fuse and 1 or 2 bus bar kits in the inverter.
Wiring illustrations please refer to Figure 4-3, Figure 4-4.
• When solar array is grounded,the PID function can not be enable,and the
insulation have to be setting “Plus Grounded” or “Minus Grounded”.
• It must to keep DC and AC power off when disconnected the DC connector
even if turn off the manual switch that in the button cover.
• Different DC connections type need different settings of insulation detection.
Please refer to 5.2.7 Install Settings for further information.
4 Wiring
4.1 Preparation Before Wiring (M30A_120)
WARNING：SHOCK HAZARD!
- Whenever a PV array is exposed to sunlight, a shock hazard may exist due to
output wires or exposed terminals. To reduce the risk of shock during installation,
cover the array with an opaque (dark) material and ensure that the Disconnect
Device in the inverter is set to OFF before commencing any wiring.
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Wiring