User Manual for Hoymiles models including: HRSD-2C Rapid Shutdown, HRSD-2C, Rapid Shutdown, Shutdown

USER MANUAL


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User-Manual HRSD-2C Global EN V202312
Open Energy for All

Region: Global V202312

Rapid Shutdown
USER MANUAL
HRSD-2C HT10
HT10-Kit
hoymiles.com

Rapid Shutdown User Manual
Legal Notice
Hoymiles has made every effort to ensure the accuracy and completeness of this manual. However, the content of this manual is continually reviewed and amended, due to product enhancements or feedback from real-world usage.
Hoymiles retains the right to modify this manual without prior notice at any time. Please refer to Hoymiles official website at www.hoymiles.com or scan the QR code for the latest version.

Warranty
To ensure reliability and warranty compliance, follow the installation instructions in this manual. You can access the current warranty conditions at www.hoymiles.com.

Contact Information
If you have technical queries or any questions concerning Hoymiles products, please contact us.

Floor 6, Building 5, Housheng 99 Road, Gongshu District, Hangzhou 310015 P. R. China

hoymiles.com

Europe

France

service.fr@hoymiles.com

Germany

service.de@hoymiles.com

Italy

service.it@hoymiles.com

Netherlands

service.nl@hoymiles.com

Spain

service.es@hoymiles.com

Other EU countries

service.eg@hoymiles.com

Latin America

Brazil

service.br@hoymiles.com

Spanish-speaking countries

service.mx@hoymiles.com

North America

USA

service.us@hoymiles.com

Cannada

service.ca@hoymiles.com

Asia Pacific

Australia & New Zealand

service.au@hoymiles.com

Asia & Pacific

service.asia@hoymiles.com

Before contact, make sure the following information at hand: · Model of the product · Brief description of the problem

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

Rapid Shutdown User Manual
Using This Manual

Symbols

Symbol · A) ...

List Installation steps in a defined order

Tool and Related Documents
To quickly select HRSD or Transmitter, use Rapid Shutdown Compatibility Calculator. For more information or related documents, refer to the product page at hoymiles.com.
Revision History

Issues V202205
V202310
V202312

Original issue
· Added the rating in "3. Safety Instructions" · Added "4. Cable Length and Routing" · Updated illustrations in 5.1, 5.2, and 5.3 of "5. Installation" · Added "6. Troubleshooting" · Updated "7. Technical Specifications"
· Updated "7.1 HRSD-2C"

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

Rapid Shutdown User Manual
CONTENTS

1. Products

01

1.1 HRSD-2C

01

1.2 HT10

02

1.3 HT10-Kit

03

2. System Overview

04

3. Safety Instructions

05

3.1 Safety Symbols

05

3.2 Safety Instructions

05

4. Cable Length and Routing

07

4.1 Configuration of Cable Lengths

07

4.2 Routing Instruction

09

5. Installation

10

5.1 HRSD-2C

10

5.2 HT10

13

5.3 HT10-Kit

16

5.4 Recommended Conduit Drilling Guide

19

6. Troubleshooting

20

6.1 Term

20

6.2 Troubleshooting Guide

20

7. Technical Specifications

22

7.1 HRSD-2C

22

7.2 HT10

23

7.3 HT10-Kit

24

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

Rapid Shutdown User Manual
1. Products 1.1 HRSD-2C

Features

· Meets SunSpec RSD, NEC 2017&NEC 2020 690.12 requirements · Uses Active Bypass to reduce heat generation in shade and other situations · Uses graphene heat spreader to improve heat dissipation · Plug & play, no configuration required · Lower power consumption and wider operating voltage range · Able to avoid crosstalk with special communication modulation technique

As part of Hoymiles Rapid Shutdown Solution for PV system, HRSD-2C is connected with two modules. It meets NEC 2017, NEC 2020, UL 1741 and SunSpec Rapid Shutdown requirements, guaranteeing PV system safety.
The HRSD device enables proper operation of the PV system when it is installed and receives a "permission to operate'` signal from the Hoymiles Transmitter. In an emergency, PV system would enter module-level rapid shutdown mode by simply disconnecting the AC power of Transmitter or using an external initiator.

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

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Rapid Shutdown User Manual
1.2 HT10

Features

· Complied with NEC 2017&NEC 2020 690.12 requirements · Complied with SunSpec RSD requirements · Equipped with single/dual Core · Achieves rapid shutdown through Transmitter power-off or external initiation

Hoymiles Transmitter HT10 is part of Hoymiles Rapid Shutdown Solution and works with HRSD for modulelevel rapid shutdown. While powered on, the HT10 uses PLC technology to continuously send a "permission to operate" signal to HRSD, enabling the PV system to start producing power.
In case of emergency, the PV system would enter module-level rapid shutdown mode by simply disconnecting the AC power of Transmitter or using an external initiator.

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

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Rapid Shutdown User Manual
1.3 HT10-Kit

Features

· Module-level rapid shutdown with Hoymiles HRSD · Achieves rapid shutdown through Transmitter power-off or external initiation · Equipped with single/dual Core · Complied with NEC 2017&NEC 2020 690.12 and SunSpec RSD requirements

· Weatherproof outdoor enclosure · Equipped with single- / three-phase power supply

Hoymiles Transmitter HT10-Kit is part of Hoymiles Rapid Shutdown Solution and works with HRSD for module-level rapid shutdown.
While powered on, the HT10-Kit uses PLC technology to continuously send a "permission to operate" signal to HRSD, enabling the PV system to start producing power. In case of emergency, the PV system would enter module-level rapid shutdown mode by simply disconnecting the AC power of Transmitter or using an external initiator.
Hoymiles Transmitter Outdoor Kit includes one Transmitter, single or dual Core, single- or three-phase power supply, and outdoor enclosure.

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

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Rapid Shutdown User Manual
2. System Overview
RSD

Transmitter

RSD

Inverter
Transmitter
-V +V DC OK
DC OK PE L2 L1

Inverter
· The HRSD-2C requires a Transmitter or an inverter with a built-in transmitter for operation.
· Hoymiles recommends that Transmitter power supply be on the same AC branch circuit as the inverter to meet rapid shutdown requirements.
· When power is supplied to the Transmitter, the HRSD-2C turns ON and allows full PV module voltage. The HRSD-2C constantly receives a "permission to operate" signal from the Transmitter. When the power supply to the Transmitter is disconnected, this "permission to operate" signal ceases, and every HRSD-2C enters shutdown mode with output reduced to 0.9 V-1.1 V. In this way, PV array enters rapid shutdown in the event of AC grid loss.

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

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Rapid Shutdown User Manual
3. Safety Instructions 3.1 Safety Symbols
This manual contains IMPORTANCE, NOTICE, WARNING, and DANGER notes. These instructions demand increasingly great attention as the severity levels rise.
The instructions do not cover all the possible conditions and situations that may occur. It is important to use common sense, caution and care during installation, maintenance and operation.

Symbols DANGER WARNING

Meaning
This indicates a hazardous situation that can result in high level electric shocks and other serious physical injuries.
This indicates a hazardous situation that may result in serious physical injuries.

NOTICE

This indicates a situation that can result in product damages.

IMPORTANCE This indicates complementary information.

3.2 Safety Instructions

DANGER
· No flammable and combustible material should be seen where HRSD is installed.
· Do not touch any live parts in the system, including the PV array, when the system has been connected to the electrical grid.
· Do not connect or disconnect under load. Turning off the Inverter and/or the HRSD may not reduce the risk. Internal capacitors within the Inverter can remain charged for several minutes after all power sources are disconnected. Verify that capacitors have discharged by measuring the voltage across inverter terminals before disconnecting wiring if service is required. Wait 30 seconds after rapid shutdown activation before disconnecting DC cables or turning off DC disconnect.
· Do not remove the cover of the products in case of electric shock. Only professionals should carry out decommission and repair.
WARNING
· All the installation MUST comply with local regulations and technical rules.
· Do not attempt to install in inclement weather.
· Only professionals should install and/or replace the HRSD and the Transmitter. The professionals must be qualified, trained and skilled, and shall strictly adhere to this Manual during installation, operation and maintenance.
· The Transmitter must be powered off during HRSD installation.
· Before installing or using an HRSD or a Transmitter, please read related technical notes (see Tool and Related Documents ) and all the instructions and warnings on the inverter system itself as well as on the PV array.
· Do not operate the HRSD if it is physically damaged. Check existing cables and connectors and ensure they are in good condition and appropriate in rating. Do not operate the HRSD with damaged or substandard wiring or connectors.
· To install the HRSD, connect the input cables to the PV module first, and then connect the HRSD output cables in series.

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

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Rapid Shutdown User Manual
· For parallel string connections, first connect the HRSD to the PV modules, then connect all outputs of HRSD in series, and finally pass one side (+ or -) of the string through the transmitter to turn the system ON.
· Do not touch the body of the running HRSD because it can reach high temperatures during heat dissipation. · To disconnect the HRSD, remove the output cables of the HRSD string first, and then disconnect the input cables from the
PV modules.
NOTICE
· Do not mix DC connectors from different manufacturers. Damages caused by it will void the Hoymiles warranty. · Improper installation may lead to HRSD damage, which is not covered under warranty. · Human-made damages caused by improper handling or opening the product will void the warranty. · Be sure to verify that the voltage and current specifications of the PV module match with those of the HRSD. · Cables of the HRSD inputs and the PV module outputs cannot be extended. · Never apply an external voltage source to a module or string equipped with HRSD.
IMPORTANCE
· To reduce the system risk, it is recommended that string inverters be able to perform Arc Fault Protection and DC Insulation Resistance Detection during the operation.
· HRSD is shipped in the OFF position and will measure 0.9 V to 1.1 V when the "permission to operate" signal is not present.
· Max. cable length from inverter (+) to inverter (-): 2625 ft. (800 m) · Recommended max. number of strings connected to HRSD: 30 modules1 · Hoymiles recommends that Transmitter power supply be on the same AC branch circuit as the inverter to meet rapid
shutdown requirements. · Max. current per Core of Transmitter: 75 A or 150 A · Max. number of strings per Core2: 5 (75 A Core) or 15 (150 A Core) · During the PV system operation, check that the Transmitter Power LED 1 is lit and the Signal LED 2 is blinking. · Place rapid shutdown system label no more than 1m (3 ft.) from the Transmitter, initiator (AC disconnect) or service panel. 1. Source: SunSpec RapidShutdown Specification. Please refer to local regulations before installation. 2. With  6 mm DC cable diameter (without DC connector) (Refer to 7.2 or 7.3 for details.)

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

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Rapid Shutdown User Manual

4. Cable Length and Routing 4.1 Configuration of Cable Lengths

HRSDs can be mounted on both the long and short sides of the PV module frame. Choose the suitable HRSDs

A

A

based on the installation scenario.

NOTICE · To securely fasten the HRSD to
the PV module frame, ensure A is 15 mm at minimum for clipping.

Scenario One: Long-side Installation For PV modules with short output cables, choose HRSDs with input cables of the suitable length shown below.
HRSD-2C input cable: 1.6 m (5.25 ft.)

IP68 / NEMA6P IN 1

IP68 / NEMA6P IN 1

C US IN 2

C US IN 2

PV Module output cable:  0.2 m (0.66 ft.)

* The proportions of the HRSDs have been modified to improve the depiction of the structure. For PV modules with long output cables, choose HRSDs with input cables of the suitable length shown below.
HRSD-2C input cable: 0.45 m (1.48 ft.)

IP68 / NEMA6P IN 1

IP68 / NEMA6P IN 1

C US IN 2

C US IN 2

PV Module output cable:  1.35 m (4.43 ft.)

* The proportions of the HRSDs have been modified to improve the depiction of the structure.

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

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Rapid Shutdown User Manual
Scenario Two: Short-side Installation For PV modules with short output cables, choose HRSDs with input cables of the suitable length shown below.

IP68 / NEMA6P

C US

IN 1

IN 2

HRSD-2C input cable: 1.6 m (5.25 ft.)

IP68 / NEMA6P

C US

IN 1

IN 2

PV Module output cable:  0.2 m (0.66 ft.)

* The proportions of the HRSDs have been modified to improve the depiction of the structure.

For PV modules with long output cables, choose HRSDs with input cables of the suitable length shown below.

IP68 / NEMA6P IN 1

C US IN 2

IP68 / NEMA6P

C US

IN 1

IN 2

HRSD-2C input cable: 0.45 m (1.48 ft.)

PV Module output cable:  1.35 m (4.43 ft.)
* The proportions of the HRSDs have been modified to improve the depiction of the structure.

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

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Rapid Shutdown User Manual
4.2 Routing Instruction
To ensure effective communication, · minimize the distance between positive and negative cables within the same string. · up to 10 Transmitters' DC cables can pass through a single cable tray.

PV -
Minimize the PV + Distance
String Inverter

PV modules and HRSDs

Note: This diagram only shows one output loop's wiring schematic in the PV system.

PV arrays and HRSDs

Cable Tray

PV 1 PV 2 -

Transmitter NO. 1
PV 1 + PV 2 + Transmitter NO. 10

PV 9 + PV 10 +

PV 9 PV 10 -

Number of Transmitter  10

String Inverter

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

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Rapid Shutdown User Manual
5. Installation 5.1 HRSD-2C

WARNING

· The Transmitter must be powered off during HRSD-2C installation. · To disconnect the HRSD-2C, remove the output cables of the HRSD string first, and then discon-
nect the input cables from the PV modules.

NOTICE

· The HRSD-2C has two inputs. If you are connecting it to one PV module, connect HRSD-2C Input 1 first, and then short jump the HRSD-2C Input 2 - and Input 2 + together.
· Cables of the HRSD inputs and the PV module outputs cannot be extended.

·
IMPORTANCE · ·

HRSD-2C output Voltage is 0.9 V to 1.1 V when Transmitter "permission to operate" signal is not present. Max. cable length from inverter (+) to inverter (-): 2625 ft. (800 m) Max. number of strings recommended: 30 modules* *Source: SunSpec RapidShutdown Specification. Please refer to local regulations before installation.

A) Buckle HRSD-2C on the PV module frame.

Mounting Brackets

NOTICE
· Maintain a minimum of 1.5 cm (0.59 inch) clearance distance between the roof and the HRSD-2C enclosure to ensure. ventilation and heat dissipation.

· Avoid exposing the HRSD-2C and its DC connectors to sunlight, rain, or snow. Don't place them between PV modules due to potential gaps.

push

IP68 / NEMA6P

C US

IN 1

IN 2

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

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Rapid Shutdown User Manual B) Connect the PV modules to the HRSD-2C.

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

11

Rapid Shutdown User Manual C) Connect the outputs of HRSD-2C in series.

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

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Rapid Shutdown User Manual

5.2 HT10

WARNING

· Before powering on the Transmitter, ensure that the HRSD has been installed.

NOTICE

· Improper installation may lead to HT10 damage, which is not covered under warranty.

· ·
· · IMPORTANCE
· · ·

PSU and the DIN rail are not provided by Hoymiles. Hoymiles recommends that Transmitter power supply be on the same AC branch circuit as the inverter to meet rapid shutdown requirements. During the PV system operation, check that the Power LED 1 is lit and the Signal LED 2 is blinking. Place rapid shutdown system label no more than 1m (3 ft.) from the Transmitter, initiator (AC disconnect) or service panel. Max. current per Core: 75 A or 150 A Max. cable length from inverter (+) to inverter (-): 2625 ft. (800 m) Max. number of strings per Core*: 5 (75 A Core) or 15 (150 A Core) * With  6 mm DC cable diameter (without DC connector) (Refer to 7.2 or 7.3 for details.)

A) - Mount Transmitter HT10 and power supply on DIN rail. - Connect the Core to the Transmitter. If there's only one Core to connect, start with Core 1.

INITIATOR -

Transmitter 75A Core

 Transmitter  75 A Core

INITIATOR -

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

 Transmitter

Transmitter 150A Core 1 150A Core 2

 150 A Core 1  150 A Core 2

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Rapid Shutdown User Manual B) - Pass either positive homerun or negative homerun through the Core. - Connect wires to the DC side of the power supply.
+
*Either positive or negative homerun runs through the Core.
PV 1 + PV 1 PV 2+ PV 2 -

PV 1 + PV 1 -
PV 2 + PV 2 -

PV 1 + PV 2 PV 3 PV 4 +
© 2023 Hoymiles Power Electronics Inc. All rights reserved.

PV 1 + PV 1 -
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Rapid Shutdown User Manual C) - Connect the serially connected outputs of HRSD-2C to the inverter with a DC cable. - Turn on AC power to Transmitter HT10 power supply to activate the "permission to operate" signal.
GRID

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

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Rapid Shutdown User Manual
5.3 HT10-Kit

WARNING

· Before powering on the Transmitter, ensure that the HRSD has been installed. · Ground 180-550 VAC PSU with isolation class I. Grounding is not necessary for an 85-264 VAC PSU
with isolation class II.

NOTICE

· Improper installation may lead to HT10-Kit damage, which is not covered under warranty.

·
· · IMPORTANCE · · ·

Hoymiles recommends that Transmitter power supply be on the same AC branch circuit as the inverter to meet rapid shutdown requirements. During the PV system operation, check that the Power LED 1 is lit and the Signal LED 2 is blinking. Place rapid shutdown system label no more than 1m (3ft) from the Transmitter, initiator (AC disconnect) or service panel. Max. current per Core: 75 A or 150 A Max. cable length from inverter (+) to inverter (-): 2625 ft. (800 m) Max. number of strings per Core*: 5 (75 A Core) or 15 (150 A Core) * With  6 mm DC cable diameter (without DC connector) (Refer to 7.2 or 7.3 for details.)

A) - Mount HT10 and power supply on DIN rail. - Connect DC leads from power supply to HT10. - Connect the Core to the Transmitter. If there's only one Core to connect, start with Core 1.

GND +12 V

INITIATOR -

N L

-V +V

-V +V DC OK
DC OK

PE L2 L1
PE L2 L1
© 2023 Hoymiles Power Electronics Inc. All rights reserved.

 Transmitter
 85-264 VAC DIN Rail PSU
 75 A Core

+12 V GND INITIATOR INITIATOR + LED 2 LED 1

LED 2 CORE 2 CORE 1

 Transmitter
 180-550 VAC DIN Rail PSU
 150 A Core 1
 150 A Core 2

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Rapid Shutdown User Manual B) - Pass either positive homerun or negative homerun through the Core.

*The waterproof accessories are not supplied and need to be prepared by the installer.

*Either positive or negative homerun runs through the Core.

*AC Wires for PSU

-V +V DC OK
DC OK
PE L2 L1

*Either positive or negative homerun runs through the Core.

NOTICE · For common mistakes, refer to 5.2 HT10, on page 14.

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

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Rapid Shutdown User Manual
C) - Connect ground wires. - Ground all conduit connections.

NOTICE

· The non-metallic enclosure does not provide grounding between conduit connections. Use grounding-type bushings and jumper wires.

D) - Connect the serially connected outputs of HRSD-2C to the inverter with a DC cable. - Turn on AC power to Transmitter HT10-Kit power supply to activate the "permission to operate" signal.

-V +V DC OK
DC OK
PE L2 L1

GRID

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

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Rapid Shutdown User Manual
5.4 Recommended Conduit Drilling Guide

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

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Rapid Shutdown User Manual

6. Troubleshooting 6.1 Term
· PV module string: a group of panels wired into a single input on your inverter. · Voc: Stands for open-circuit voltage, which is the maximum voltage the PV module can produce when it is
not connected to a load.
6.2 Troubleshooting Guide 6.2.1 PV module string has no DC voltage (0 V)

Problem

The output voltage of one or more PV module strings is displayed as 0.0 V on the inverter monitoring platform.

Possible Cause

There is an open circuit condition within the PV module string due to the wiring issues in the connectors, or there is an operation abnormal of HRSD.

Troubleshooting Procedure

Step 1

Find the failed PV module string and disconnect the inverter from it. Check each connector in the faulty string for accidental disconnections or loose connections. If
any looseness or disconnection issues are found, replug the connectors and check whether the string voltage displayed on the inverter monitoring platform has returned to normal. If the voltage has not returned to normal, move on to Step 2.

Step 2

Visually check the HRSD for a bulging cover or any visible damage. If there are visible signs of damage around the HRSD, contact the distributor for a replacement. Otherwise, reconnect the inverters to the PV module strings and observe the voltage changes of the PV module string.

Step 3

If the string output is still 0 V, refer to 6.2.3 HRSD has no output voltage (0 V).

6.2.2 PV module string has less output voltage than expected

Problem

The voltage displayed on the inverter monitoring platform is significantly lower than the expected Voc × n*. *n: Here, n refers to the number of PV modules in each string.

Possible Cause

This issue may be related to various factors, such as power supply failure in the transmitter, signal interference between the transmitter and the HRSD, internal malfunction or power supply failure in the HRSD, wiring issues in the PV module string, or damage to the PV modules.

Troubleshooting Procedure

Step 1

Confirm the following installation are correct: · The current passing through the Core aligns with the data specified in the Transmitter's user manual. · The cable length (the PV+ to PV- loop of each PV string) should not exceed 2625 ft.
(800 m).
· The homeruns passing through the Core must be of the same polarity, either all positive or all negative.

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

Cable length: < 2625 ft. (800 m)
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Rapid Shutdown User Manual

Step 2 Step 3

Check and ensure the power supply to the Transmitter is functioning properly. Observe whether the power indicator LED 1 is solid. If LED 1 is solid, proceed to Step 3. Otherwise, manually test the power supply with a multimeter to check whether the voltage is 12 V. If the voltage is 12 V, move on to Step 3. If not, replace the power supply.
Check and ensure the signal indicator of the Transmitter is functioning properly. Observe whether the signal indicator LED 2 is flashing. If the LED 2 is flashing, proceed to Step 4. If the LED 2 is solid, it means that the Transmitter has not sent a "Permission to Operate" signal. Restart the transmitter and observe whether the LED 2 returns to flashing. If it does, proceed to Step 4. If the LED 2 is still solid, contact Hoymiles technical support team.

power indicator
LED 11
signal indicator
LLEEDD 12
signal indicator
LED22

Step 4 Step 5

Check whether there are loose connections between PV modules and HRSD. If there are loose connections, reconnect the connectors. Otherwise, proceed to Step 5.
Check if the PV modules and the HRSD are functioning properly. If the Transmitter is functioning and generating a "Permission to Operate" signal, follow the steps below to check the PV modules and the HRSD. (If you don't have the necessary equipment, skip the following steps.)
1. Use a camera or a handheld temperature gun to check if there is a module with an abnormally low-temperature reading in the PV module string. 2. Use a multimeter to sequentially test the voltage on OUT+ and OUT- of each HRSD.
· If an HRSD's OUT+ and OUT- give the same voltage, it indicates that this HRSD has no output voltage and should be replaced.
· If there is a certain voltage difference between the OUT+ and OUT- of the HRSD, it indicates that this HRSD is working normally. Disconnect this HRSD and measure the PV module's output voltage. If the PV module has no output voltage, it means that the issue may be the PV module and it needs to be replaced.

6.2.3 HRSD has no output voltage (0 V)

Problem

The output voltage of a certain HRSD is measured at 0 V.

Possible Cause

There is an internal malfunction in this equipment.

Troubleshooting Procedure

Step 1

Check and ensure the rapid shutdown system is connected properly.

Step 2 Step 3

Check if the PV modules are functioning properly.Disconnect the HRSD from the PV module and use a multimeter to measure the output voltage of the PV module. If the output voltage is normal (depending on the specification of your PV plant, the standard of 'normal ' might be different), it indicates that the issue may be the HRSD. Proceed to measure the output voltage of the HRSD with a multimeter. Otherwise, replace the PV module.
Check if the HRSD is functioning properly. Check and ensure that the PV modules are functioning properly and the PV modules and HRSDs are correctly connected. Once these have been confirmed, measure the output voltage of the HRSD with a multimeter. If the output voltage is still 0 V, it means that there is an internal malfunction in HRSD. Contact Hoymiles Technical Support Team to replace the HRSD.

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

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Rapid Shutdown User Manual
7. Technical Specifications 7.1 HRSD-2C

Model

HRSD-2C

HRSD-2C-B

Electrical Data

Output voltage range

16-160 V

16-130 V

Input voltage range

8-80 V

8-65 V

Maximum current

15 A

20 A

Maximum short circuit current

25 A

Maximum system voltage

1000 V / 1100 V (1500 V optional)

Communication type

SunSpec PLC

Shutdown output voltage

1 V

Power consumption

200 mW

Mechanical Data

Input connectors Input cable length1

MC4 / MC4 EVO2, optional 0.45 m (1.48 ft.) / 1.6 m (5.23 ft.), optional

Output connectors Output cable length2 Dimensions

MC4 / MC4 EVO2, optional

2.7 m (+) / 0.1 m (-) 8.86 ft. (+) / 0.33 ft. (-)

2.9 m (+) / 0.1 m (-) 9.51 ft. (+) / 0.33 ft. (-)

133 x 58 x 16 mm (5.24 x 2.28 x 0.63 inch)

Environmental

Operating temperature range Outdoor rating

-40°C to +85°C (-40°F to +185°F) IP68 / NEMA6P

Compliance

Safety

UL1741, CSA C22.2 No. 330-17, IEC/EN 62109-1

EMC

FCC Part15 Class B, ICES-003, IEC/EN 61000-6-1/-2/-3/-4

*1 The former matches PV module output cables of 1.35 m (4.43 ft.) at minimum, and the latter matches those of 0.2 m (0.66 ft.) at minimum. 2 Fits PV module in portrait installation. Contact Hoymiles if horizontal installation is needed.

25

133

2700 / 2900

100

16

IP68 / NEMA6P IN 1

C

US

IN 2

58 450 / 1600

Unit : mm

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

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Rapid Shutdown User Manual

7.2 HT10

Electrical Transmitter input voltage Transmitter input current Communication type

12 VDC (+/-2%) 1 A
SunSpec PLC

Core Number of configure Core Max. current per Core

1 75 A

1 150 A

2 150 A

DC cable diameter

 6 mm  6.45 mm  7 mm  6 mm  6.45 mm  7 mm  6 mm  6.45 mm  7 mm

Max. number of strings per Core*

5

4

3

15

12

10

15

12

10

Mechanical Dimensions Mounting type Environmental Operating temperature range Outdoor rating

93 x 36.5 x 53 mm (3.66 x 1.44 x 2.09 inch) DIN35 Rail
-40°C to +85°C (-40°F to +185°F) IP30 / NEMA1

Compliance Safety EMC

UL1741, CSA C22.2 No. 330-17 FCC Part15 Class B, ICES-003

* The maximum number of strings per Core is determined by the DC cable current and diameter. The total current should not exceed the Core's maximum allowed current, and the total cable diameter should not exceed the Core's diameter. If the actual cable diameter exceeds the reference diameter, the maximum number of strings per Core will be reduced accordingly.

When installed inside an inverter, HT10 needs to be powered with the following power curve at least.
Voltage: 12 VDC (+/-2%) Power Standby: 0.2 W Duty Cycle: 16% Max. Power: 3W

Unit : mm 36.5

93 64
200 47
200

Transmitter
© 2023 Hoymiles Power Electronics Inc. All rights reserved.

28 Core-150 A

17
Core-75 A
23

Rapid Shutdown User Manual
7.3 HT10-Kit

Electrical

Transmitter input voltage

12 VDC (+/-2%)

Transmitter input current

1 A

Input voltage range

85-264 VAC

180-550 VAC

180-550 VAC

Communication type

SunSpec PLC

Core

Number of configure Core

1

1

2

Max. current per Core

75 A

150 A

150 A

DC cable diameter

 6 mm  6.45 mm  7 mm  6 mm  6.45 mm  7 mm  6 mm  6.45 mm  7 mm

Max. number of strings per Core*

5

4

3

15

12

10

15

12

10

Mechanical

Dimensions

93 x 36.5 x 53 mm (3.66 x 1.44 x 2.09 inch)

Mounting type

DIN35 Rail

Environmental

Operating temperature range

-40°C to +85°C (-40°F to +185°F)

Outdoor rating

IP65

Compliance

Safety

UL1741, CSA C22.2 No. 330-17

EMC

FCC Part15 Class B, ICES-003

* The maximum number of strings per Core is determined by the DC cable current and diameter. The total current should not exceed the Core's maximum allowed current, and the total cable diameter should not exceed the Core's diameter. If the actual cable diameter exceeds the reference diameter, the maximum number of strings per Core will be reduced accordingly.

179

198.5

18

32
-V +V DC OK
DC OK

36.5

298 90 125.2 93 64
200 47
200

Unit : mm

PE L2 L1

Power Supply Power Supply Transmitter

(85-264 V)

(180-550 V)

28 Core-150 A

© 2023 Hoymiles Power Electronics Inc. All rights reserved.

17 Core-75 A
24



References

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