APsmart RSD-D Instruction Manual
TABLE OF CONTENTS
IMPORTANT SAFETY INSTRUCTIONS----------------------------------------------------------------------1
RSD PRODUCTS-----------------------------------------------------------------------------------------------2
TRANSMITTER PRODUCTS----------------------------------------------------------------------------------3
SYSTEM WIRING DIAGRAM---------------------------------------------------------------------------------4
RSD-D INSTALLATION----------------------------------------------------------------------------------6
TRANSMITTER-PLC INSTALLATION -----------------------------------------------------------------------9
TECHNICAL DATA—RSD-D----------------------------------------------------------------------------12
TECHNICAL DATA—TRANSMITTER-PLC-----------------------------------------------------------------13
TECHNICAL DATA—TRANSMITTER-PLC-OUTDOOR KIT----------------------------------------------14
User Manual
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IMPORTANT SAFETY INSTRUCTIONS
This manual contains important instructions to be followed during installation and maintenance of the
APsmart RSD-D and Transmitter. To reduce the risk of electrical shock and ensure the safe installation
and operation of the APsmart RSD-D and Transmitter, the following symbols appear throughout this
document to indicate dangerous conditions and important safety instructions.
Safety Instructions
·Do NOT disconnect the PV module from the RSD-D without first disconnecting the AC power.
·Only qualified professionals should install and/or replace the APsmart RSD-D.
·Perform all electrical installations in accordance with local codes.
·Before installing or using the RSD-D, please read all instructions and cautionary markings in the
technical documents.
·Be aware that the body of the operating RSD-D is a heat sink and can reach high temperature.
To reduce risk of burns, do not touch the body of the RSD-D.
·Do NOT attempt to repair the RSD-D. If it fails, contact APsmart Customer Support to obtain an
RMA number and start the replacement process. Damaging or opening the RSD-D will void the
warranty.
The power supply of the Transmitter-PLC and inverter MUST be on the same AC branch circuit as the
inverter to meet rapid shutdown requirements.
Qualified personnel:
Person adequately advised or supervised by an electrically skilled person to enable him or her to
perceive risks and to avoid hazards which electricity can create. For the purpose of the safety information
of this manual, a "qualified person" is someone who is familiar with requirements for safety, electrical
systems and EMC and is authorized to energize, ground, and tag equipment, systems, and circuits in
accordance with established safety procedures. The inverter and balance of system may only be
commissioned and operated by qualified personnel.
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RSD PRODUCTS
RSD-D
·Meets NEC 2017 & 2020 (690.12) requirements
·Executes rapid shutdown of system when Transmitter-PLC signal is absent
·Meets SunSpec requirements
·Dual-input channel
The RSD-D meets SunSpec requirements, maintaining normal function by continually receiving a
heartbeat signal from the APsmart Transmitter. The RSD-D executes rapid system shutdown when
the Transmitter signal is absent. Users can manually execute rapid shutdown using the Transmitter
breaker switch.
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TRANSMITTER PRODUCTS
Transmitter-PLC
Transmitter-PLC-Outdoor Kit
·Meets NEC 2017&2020 (690.12) requirements
·Switching off Transmitter-PLC results in
rapid shutdown of the output of PV modules
·Meets SunSpec requirements
·Equipped with single/dual core
·Optional 85-264VAC power supply
·Optional 180-550VAC power supply
·Meets NEC 2017&2020 (690.12) requirements
·Switching off Transmitter-PLC results in
rapid shutdown of the output of PV modules
·Meets SunSpec requirements
·Equipped with single/dual core
·Optional 85-264VAC power supply
·Optional 180-550VAC power supply
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SYSTEM WIRING DIAGRAM
The APsmart Rapid Shutdown System Transmitter-PLC is part of a rapid shutdown solution when paired
with the APsmart RSD-D, a PV module rapid shutdown unit. While powered on, the Tansmitter-PLC sends
a signal to the RSD-D units to keep the PV modules connected and supplying energy.
RSD-D units automatically enter rapid shutdown mode when the Transmitter-PLC is switched off and
resume energy production when power is restored to the Transmitter-PLC. This solution complies with
NEC 690.12 specifications for 2017 & 2020 and supports the SunSpec signaling for rapid shutdown.
The Transmitter-PLC includes one or two cores and an optional power supply: 85-264VAC for
residential, 180-550VAC for commercial.
The Transmitter-PLC Outdoor Kit includes a Transmitter-PLC with one or two cores, outdoor enclosure,
85-264VAC or 180V-550VAC power supply. It could be used in a residential or commercial project.
①RSD-D
②Transmitter-PLC
③Inverter
*PV2+
*PV2-
*PV1+
*PV1-
*Only (+) or (-) through core
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①RSD-D
②Transmitter-PLC-Outdoor Kit
③Inverter
①RSD-D
②Inverter*
*Inverter in diagram includes an integrated SunSpec-certified Rapid Shutdown Transmitter.
*PV2+
*PV1+
*Only (+) or (-) through core
*PV2+
*PV1+
*Only (+) or (-) through core
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RSD-D INSTALLATION
INSTALLATION NOTES
Installation MUST comply with local regulations and technical rules：
①Perform all electrical installations in accordance with local codes.
②Be aware that only qualified professionals should install and/or replace the RSD-D.
③Before installing or using an RSD-D, please read all instructions and warnings in the technical
documents and on the inverter system itself as well as on the PV array.
④Be aware that installation of this equipment includes the risk of electric shock.
⑤Do not touch any live parts in the system, including the PV array, when the system has been
connected to the electrical grid.
⑥Ensure the PV module and inverter have been disconnected before installing an RSD-D.
①Be sure to verify the voltage and current specifications of your PV module match with those of
the RSD-D.
②The maximum open circuit voltage of the PV module must not exceed the specified maximum
input voltage of the APsmart RSD-D.
Additional installation components from APsmart
·DC extension cable (sold separately)
Required parts and tools to complete the installation
In addition to your PV array and its associated hardware, you will need a torque wrench and a Phillips
screwdriver.
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Mounting brackets
Step 1: Install the RSD-D.
Buckle RSD-D onto the PV module frame.
A. Back buckle
B. Front buckle
OUTPUT- OUTPUT+
INPUT2+ INPUT1+
INPUT2- INPUT1-
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Step 2. Connect the input 1 port of the RSD-D to the PV module
junction box, and connect the input 2 port of RSD-D to the other
PV module junction box.
WARNING: When connecting the RSD-D to only one PV module, use INPUT1 port ONLY, then
connect a DC extension cable to both terminals of INPUT2 to short the unused side, otherwise the
RSD-D may be damaged.
Step 3: Connect the output ports of two adjacent RSD-Ds in
series and then connect to the inverter with a self-made DC
extension cable.
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TRANSMITTER-PLC INSTALLATION
Transmitter-PLC power supply must be on same AC branch circuit as inverter to meet rapid shutdown
requirements.
During operation, the Power LED should be lit and the Signal LED should be blinking. If the Transmitter-
PLC fails to work, the Signal LED will not be blinking. If the Power LED is also not lit, check the power
supply first.
Note: Install the RSD-D before powering on the Transmitter-PLC.
• Mount Transmitter-PLC and power supply on DIN rail
• Connect DC leads from power supply to Transmitter-PLC
• Connect single/dual core(Core 1 and Core 2) to Transmitter-PLC
Place rapid shutdown system label no more than 1m (3ft) from Transmitter-PLC or AC disconnect if not at
same location.
Note: If there is only one core needed, connect using Core 1 terminal.
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Note: Install the RSD-D before powering on the Transmitter-PLC.
• Pass either positive or negative cables through cores (either both positive cables or both negative cables.
Do not use one positive and one negative cable.)
• Connect wires to AC side of power supply
Max number Of Strings Per Core :
DC cable Diameter
Φ5.9mm
Φ6.35mm
Φ7mm
Φ8.6mm
Number Of Strings Per Core (without connector)
≤15
≤15
≤14
≤10
Max string length : 30 modules
Max current per core : 150A
Max cable length from inverter(+) to inverter(-) : 1000ft (300m)
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Drilling Guide for .75" Conduit
Drilling Guide for 1" Conduit
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TECHNICAL DATA—RSD-D
Model
RSD-D
Input Data (DC)
Input Operating Voltage Range
8-80V Per Channel
Maximum Cont. Input Current (Imax)
15A Per Channel
Output Data (DC)
Output Operating Voltage Range
16-160V
Maximum Output Current
15A
Maximum System Voltage
1000V/1500V
Mechanical Data
Operating Ambient Temperature Range
-40 oF to +167 oF (-40 °C to + 75 °C)
Dimensions (without cable & connectors)
5.5" x 2" x 0.8"(140 mm x 50.6 mm x 20 mm)
Cable Length
Input 500mm/Output 2200mm
Cable Cross Section Size
TUV:4mm²/UL:12AWG
Connector
MC4 or Customize
Enclosure Rating
NEMA Type 6P/IP68
Over Temperature Protection
Yes
Features & Compliance
Communication
PLC
Safety Compliance
NEC 2017 & 2020 (690.12); UL1741; CSA C22.2 No. 330-
17; IEC/EN62109-1
EMC Compliance
FCC Part15; ICES-003
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TECHNICAL DATA—TRANSMITTER-PLC
Model
Main electrical data
Transmitter-PLC
Main electrical data
Input Voltage
12VDC
Input Current
0.8A
Communication
PLC
Power Supply
Residential（optional）
85-264VAC Input, 12VDC Output, 90 mm x 17.5 mm x 58.4 mm
Commercial（optional）
180-550VAC Input, 12VDC Output, 125.2 mm x 32 mm x 102 mm
Core data 29mm Core 11mm Core
Max. Current 150A Per core 75A Per core
Max. System Voltage 1500VDC
Internal Opening for Wires/Outside Dimensions ~29mm/65mm ~11mm/35mm
Max. Supported PV Modules per String 30 modules
30 modules
30 modules
Number Of Strings Per Core
DC Cable Diameter(without connector)
Φ5.9mm
Φ6.35mm
Φ7mm
Φ8.6mm
29mm Core
≤15
≤15
≤14
≤10
11mm Core
≤6
≤5
≤4
≤2
Environmental
Temperature
-40℃～+100℃
Structure data
Dimensions (W x H x D)
90 mm x 35 mm x 40 mm
Enclosure Environmental Rating
IP30
Features & Compliance
Safety Compliance
NEC 2017 & 2020 (690.12); UL1741; CSA C22.2 No. 330-17
EMC Compliance
FCC Part15; ICES-003
User Manual
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TECHNICAL DATA—TRANSMITTER-PLC-OUTDOOR KIT
Model
Main electrical data
Transmitter-PLC-Outdoor Kit
Main electrical data
Input Voltage
12VDC
Input Current
0.8A
Communication
PLC
Power Supply
Residential（optional）
85-264VAC Input, 12VDC Output, 90 mm x 17.5 mm x 58.4 mm
Commercial（optional）
180-550VAC Input, 12VDC Output, 125.2 mm x 32 mm x 102 mm
Core data
29mm Core
Max.Current
150A Per core
150A Per core
Max. System Voltage
1500VDC
1500VDC
Internal Opening for Wires/Outside Dimensions
~29mm/65mm
Max. Supported PV Modules per String
30 modules
30 modules
30 modules
Number Of Strings Per Core
DC Cable Diameter(without connector)
Φ5.9mm
Φ6.35mm
Φ7mm
Φ8.6mm
29mm Core
≤15
≤15
≤14
≤10
Environmental
Temperature
-40℃～+60℃
Structure data
Dimensions (W x H x D)
198.5 mm x 298 mm x 179 mm
Enclosure Environmental Rating
IP30
Features & Compliance
Safety Compliance
NEC 2017 & 2020 (690.12); UL1741; CSA C22.2 No. 330-17
EMC Compliance
FCC Part15; ICES-003
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