External Demand Response - Sungrow SG2K5-S User Manual

User Manual
Inverter provides various parameter configurations for optimal operation. You
can set the country via the iSolarCloud App or the cloud server, in case you
require further, please contact Sungrow.

Communication interface
You can choose the RS485 terminal for connecting a communication module
to the PV system, such as Wi-Fi module.
 It is recommended to use the communication module from
Sungrow. Using a device from other companies may lead to
communication failure or other unexpected damage.
 Further information on the communication module can be found in
the respective Quick Installation Guide.

Earth fault alarm
If an earth fault occurs, the error code will be displayed on the LCD screen.
The buzzer inside the inverter will beep to signal an external alarm.

Protective function
The protective functions are integrated in the inverter, including short circuit
protection, grounding insulation resistance surveillance, residual current
protection, anti-islanding protection, DC overvoltage / over-current protection,
etc.

2.4.2 External Demand Response

The inverter provides a RJ45 port for connecting to a demand response
enabling device (DRED). The DRED asserts demand respond modes (DRMs).
The inverter detects and initiates a response to the supported demand
response commands within 2 s. The following table lists the DRMs supported
by the inverter.
Tab. 2-3 Demand Response Modes (DRMs)
Mode Explanation
DRM0 The inverter is in the state of standby.
DRM5 The export power to the grid is 0.
DRM6 The export power to the grid is no more than 50% of the rated power.
DRM7 The export power to the grid is no more than 75% of the rated power.
The export power to the grid is 100% of the rated power, but subject
DRM8
to the constraints from other active DRMs.
2 Product Introduction
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