Sungrow EMS200 User Manual (English)

Questions and Answers:

C
Courtney HarrisSep 8, 2025
What causes Battery Group DC V-Diff too Large on Sungrow EMS200 Controller?
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  Keith PageSep 8, 2025
  If the Sungrow Controller displays a Battery Group DC V-Diff too Large error, and you have multiple BCPs or the system in which battery DC sides are directly connected in parallel, and "Battery Direct Connect Voltage Value" is greater than the set value, check whether the parameter is set to an appropriate value. Also, check whether the system voltage difference between battery racks whose DC sides are connected in parallel is relatively large.
N
Nicholas GrimesSep 10, 2025
How to fix Sungrow EMS200 Controller power-on failure?
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  Patrick OliverSep 10, 2025
  If the Sungrow Controller fails to power on, check whether the power cable connecting the local controller is firmly in place. If it is, replace the power source. If the issue persists, the local controller may be faulty, so contact us.
A
adaughertySep 12, 2025
What causes PCS Direct Grid V-Diff too Large Alarm on Sungrow EMS200 Controller?
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  Peter Simpson DVMSep 12, 2025
  If the Sungrow Controller displays a PCS Direct Grid V-Diff too Large Alarm, and multiple PCSs are directly connected in parallel on the AC side with differing battery voltages on the DC side exceeding the set value, check whether the parameter is set to an appropriate value. Also, check whether "Balance Control Enable" is enabled and whether voltage equalization is invalid.
M
Michael WhiteSep 13, 2025
What causes Air Condition Temperature Abnormal on Sungrow EMS200?
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  Christopher JonesSep 13, 2025
  If the Sungrow Controller displays an Air Condition Temperature Abnormal, and the actual temperature in the battery container is higher than "Air Condition T Uplimit Value" or Air Condition T Lowlimit Value ", check whether the air conditioner in the battery container is faulty. Also, check whether the parameters such as "Air Condition T Uplimit Value" or Air Condition T Lowlimit Value ". are appropriately set.

Sungrow EMS200 Specifications

General

Model	EMS200
Operating Temperature Range	-25°C to +60°C
Protection Class	IP20
Weight	3.5 kg
Storage Temperature	-40°C to +70°C
Relative Humidity	5% to 95% (non-condensing)
Type	Energy Management System
Communication Protocols	CAN, RS485, Ethernet
Battery Compatibility	Lithium-ion, Lead-acid