SECU-A Series
User Manual
Low Voltage Lithium Battery

JIANGSU GOODWE POWER SUPPLY TECHNOLOGY CO., LTD
No. 90 Zijin Rd., New District, Suzhou, 215011, China
www.goodwe.com
service@goodwe.com

https://www.linkedin.com/company/jiangsu-goodwe-power-supply-technology-co-ltd-/
https://www.semsportal.com/home/pvmaster
https://www.semsportal.com/home/AppDownload
http://en.goodwe.com

Statement

This document contains safety information and instructions on installing, connecting and commissioning. Please finish reading this document before taking any actions on the system.
This manual introduces the installation and commissioning of the SECU-A5.4L battery. Please read through the manual and follow the instructions to use the SECU-A5.4L battery.
This document is valid for the ******* from firmware version ******.
This document only contains brief information and may deviate from the real system.
Any failure to follow this document instruction will make any manufacturer’s warranty, guarantee or liability null and void unless you can prove that the damage was not due to non-compliance.
SECU-A5.4L battery is used with GoodWe ESA/ES/EM/SBP/BP series products. The battery is designed for indoor use. But in an ESA system, the battery is protected by the ESA enclosure, which could be used outdoors.
The system is not suitable for supplying life-sustaining medical devices. Please ensure that no personal injury would lead due to the power outage of the system.
Alterations to the GoodWe system, e.g., changes or modifications are not allowed unless the written permission of GoodWe is achieved.
The enclosed document is an integral part of this system. Keep the documentation in a convenient, dry place for future reference and observe all instructions contained therein.
The instructions in this document may only be performed by qualified persons who must have the following skills:

• Knowledge of how batteries work and are operated
• Knowledge of how an inverter works and is operated
• Knowledge of, and adherence to the locally applicable connection requirements, standards and directives* (*the local standard for Australia is AS/NZS 5139:2019)
• Knowledge of, and adherence to this document and the associated system documentation, including all safety instructions
• Training in dealing with the hazards associated with the installation and operation of electrical equipment and batteries
• Training in the installation and commissioning of electrical equipment
  The battery must be stored, installed or operated under a secured environment, including:
• The ambient temperature shall be -10 ℃ ~ 50 ℃
• Keep it away from corrosive liquids or the environment
• Keep it dry, away from any inductive liquid
• No high flammable or explosive materials nearby

Symbols Explanation

	Observe the documents Observe all documents with the system.
	Grounding conductor This symbol indicates the position for connecting a grounding conductor.
	WEEE designation Do not dispose of the system together with household waste but in accordance with the disposal regulations for electronic waste applicable at the installation site.
	CE mark The system complies with the requirements of the applicable EU directives.
	Please it straight up, without inclination or upside down.
	Handle with care
	Keep it dry
	Keep the battery away from open flame or ignition sources.
	Beware of electrical voltage.
	Beware of a danger zone This symbol indicates that the system must be additionally grounded if additional grounding or equipotential bonding is required at the installation site.
	Keep the battery modules away from children.
	Do not short circuit.
	No more than five (5) identical packages being stacked on each other.

Product Overview

Note:
The two COM ports on the battery are of the same function.
The two Power Cable Connector + or – on the battery are of the same function.

Cable Connection

Power Cable Connection

Note:

• The battery is designed for GoodWe ESA, ES, EM, SBP, BP series energy storage systems. Before installation, make sure the battery is not damaged and the battery breaker is switched OFF. And whole energy storage system is isolated from both AC and DC power.
• Before installation and cable connection, make sure the battery is not damaged and the battery breaker is switched OFF. And whole ESA cabinet is isolated from both AC and DC power.
• Battery packs shall be connected in parallel.
• Each SECU-A5.4L unit has two sets of Power Cable Connector – and ﹢, which functions the same. Any of the two sets could be used for power connection.
• Please make sure the positive and negative pole on both the battery and inverter sides are not reversed, otherwise, the inverter or battery could be damaged.
• The unused battery connectors must be sealed with a connector cover.
• When replacing or expanding the battery system, it is prohibited to connect the battery to the system, please contact the after-sales service for processing.
• Please refer to the inverter user manual for specific connectors on each inverter. We just take SBP and ESA series inverter as examples to introduce the connection in this manual.

Power cable connection of SECU-A5.4L with ES, EM, SBP, and BP inverters
When SECU-A5.4L is used with ES, EM, SBP, and BP series inverters，the power cable needs to be prepared by the user, the recommended conductor cross-sectional area is 25mm2.

Power cable connection of single unit of SECU-A5.4L with ESA inverter

• Before installation and cable connection, make sure the whole ESA cabinet is isolated from both AC and DC power.
• The cables between the battery and the inverter are connected in the same way. Please refer to the “Cable connection of SECU-A5.4L with ES, EM, SBP and BP inverters”.
• Open battery enclosure and install batteries and another component by sequence as below:

Communication Cable Connection

Communication cable connection of SECU-A5.4L with ES, EM, SBP, and BP inverters When SECU-A5.4L is used with ES, EM, SBP, and BP series inverters，the network cable needs to be prepared by the user.

Communication cable connection of SECU-A5.4L with ESA inverter
In the battery enclosure, the battery cable and communication cable are present inside. Connect directly these cables on the battery to the right position:

Note:

1. The two COM ports on the battery are of the same function.
2. Battery packs shall be connected in parallel.
3. The cables between the battery and the inverter are connected in the same way. Please refer to the “Cable connection of SECU-A5.4L with ES, EM, SBP and BP inverters”.

Battery Commissioning

Calibrating the DIP switch

• The DIP switches shall be configured differently between a single-piece battery and 2 battery paralleling systems.
• We just take the SBP series inverter system as an example, the calibration method of the DIP switch for the ESA series inverter system is the same.

Single Unit Of SECU-A5.4L System

2~6 Units Of SECU-A5.4L System

Powering on the battery system

1.  Check all cables are connected correctly.
2. Turn on the battery break.
3. Turn on all battery switches within 30 seconds in the system. If it exceeds 30 seconds, there will be an error alarm.

Battery Switch

Note: Please follow the instruction to turn on/off the battery in case of any damage on battery modules.

Setting the parameters of SECU-A5.4L On the PV Master app

To make sure the battery communicates to the inverter unit successfully, users have to use PV
Master to choose the right battery option on PV Master:
APP Installation And Connection:

Select “SECU-A5.4L” on the battery page in PV Master Application
Notes:

1. Select wrong battery will lead to BMS communication failure
2. Select a wrong number of batteries the input and output current will be limited and the parameter indicated by the converter is inconsistent with the actual value of the battery.
3. For the complete commissioning of the whole ESA system, please go to ESA instruction.

Observing the indicator status.

LED Indication

Operation Indicator
	SOC < 5%
	5%≤ SOC ≤25%
	25%≤ SOC ≤50%
	50%≤ SOC ≤75%
	75%≤ SOC ≤95%
	95%≤ SOC ≤100%

Error Code and Warning Code

Warning Status

Operation LED	SOC LED	Warning Description
Green Blink 3 seconds		Cell Temperature Difference
		Battery High Temperature
		Discharge Under Low Temperature
		Charge Overcurrent
		Discharge Overcurrent
		Battery Over Voltage
		Battery Under Voltage
		Charge Under Low Temperature

Note: If Battery Under Voltage happens during working status, by pressing battery switch for 5 times in 10 seconds, BMS will compulsively close MOS, so that the inverter will detect battery open-circuit voltage to charge the battery.
Error Status

Operation LED	SOC LED	Error Description	Solution
Red Blink 3 seconds		Temperature Sensor Failure	Reboot battery or contact aftersales
		MOS Fault
		Breaker Open	Turn Off battery and contact aftersales
		DIP Switch Status	Keep same of DIP switch status and reboot battery
		Slave Communication	Reconnect communication cable
		NO SN	Contact aftersales
		Master Communication Loss	Reconnect communication cable
		Firmware Inconsistency	Contact aftersales
		Multi-Master Unit	Turn off and reboot all batteries in 30s
		MOS Over temperature	Turn off battery for 2 hours

Battery Parameters

Safety Instructions

The system has been designed and tested under international safety requirements. However, to prevent personal injury and property damage and ensure the long-term operation of the system, do read this section carefully and observe all safety information at all times.
Battery Module Leakage
If the battery modules leak electrolytes, please avoid contacting the leaking liquid or gas. If one is exposed to the leaked substance, do these actions:
Inhalation: Evacuate the contaminated area, and seek for medical help immediately.
Eye contact: Rinse your eyes with clean water for at least 15 minutes and seek for medical help immediately.
Skin contact: Wash the affected area thoroughly with soap and clean water, and seek for medical help immediately.
Ingestion: Induce vomiting, and seek for medical help immediately.
Firefighting Measures

• In case of a fire, please make sure that a carbon dioxide extinguisher or Novac1230 or FM-200 is nearby. Water cannot be used to extinguish the fire. (ABC is not effective for this battery firefighting)
• Full protective clothing and self-contained breathing apparatus are required for the firefighters to extinguish the fire.
  Warning: Under >150 ℃ environment, there is the possibility that the battery could explode Handling and Storage Guide The battery modules and its components shall be protected from damage when it is in transporting and handling Please take the weight of the battery module system into account during transportation and the battery module shall be lifted carefully
• Do not impact, pull, drag or step on the battery modules, or insert unrelated objects into any part of the battery modules The battery module shall be kept away from a fire, water, strong oxidizers or solvents
• The battery modules cannot be stored in high temperatures (> 60 ℃ ) or stored directly under the sun, or in any high humidity environment.
• Do not use the battery modules if it is defective, or appears cracked, broken.
• Do not attempt to open, disassemble, repair, tamper with, or modify the battery modules without official permission from Good We.
  Warning: battery module damage may lead to electrolyte explosive air leakage, please contact technical support immediately.

Warning of Electric Shock
It is dangerous to get an electric shock when live components or DC cables are touched.
Disconnect the battery from the voltage source before working on the device. Make sure of no any manual operation under load. And do not touch non-insulated parts or cables. And wear suitable protective equipment for all work on the system.
Warning: If the battery is wetted, make sure it is not touched by hand, and contact technical support
Surge Protection
Overvoltages can be further conducted into the building or other connected devices in the same network via network cables or other cables if there is no surge protection.
Ensure that the system is integrated into the existing surge protection.

Disclaimer

→ All the information in this document is the property of GoodWe No part of this document could be reproduced in any way for business use. Internal use is allowed.
→ GoodWe makes no representations or warranties express or implied, with respect to this document or any of the equipment and/or software it may describe, including (with no limitation) any implied warranties of utility, merchantability, or fitness for any particular purpose. All such representations or warranties are expressly disclaimed. Neither GoodWe nor its distributors or ealers
shall be liable for any indirect, incidental, or consequential damages under any circumstances.
→ The exclusion of implied warranties may not apply in all cases under some statutes, and thus the above exclusion may not apply.
→ Specifications are subject to change without notice. Every effort has been made to make this document complete, accurate, and up-to-date. However, GoodWe may need to make some improvements under certain circumstances without advance notice. GoodWe shall not be responsible for any loss caused by this document including, but not limited to omissions errors, typographical errors, arithmetical errors or listing errors in this document.

Documents / Resources

GOODWE SECU-A Series Low Voltage Lithium Battery [pdf] User Manual SECU-A Series, Low Voltage Lithium Battery

References

• User Manual