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Single-phase Microinverter User Manual
8. Compliance Consideration
8.1 Earth Fault Alarm Notification
This inverter complies with IEC 62109-2 clause 13.9 in terms of earth fault alarm monitoring.
If an Earth Fault Alarm occurs, the LED on the microinverter will light up solid red every 0.5 second.
An external indication of earth fault alarm can be provided by connecting the PV System to Hoymiles
monitoring app/portal. For details of how to configure monitoring, please refer to document “HMP Operating
Guide (Webpage) V2.0” and “HMP Operation Guide (APP)”.
8.2 Power Quality Response Modes
This inverter supports the following power quality response modes as per AS 4777.2:2015: Power derating for
voltage variation (Volt-Watt mode).
The inverter output power varies in response to the voltage at its terminal. This mode can be enabled via
gridprofile module on Hoymiles monitoring platform. Please refer to document “HMP Operating Guide
(Webpage) V2.0” and “HMP Operation Guide (APP)” or contact Tech Support for more information.
And please refer to “Technical Note-How to set Hoymiles 3Gen Grid Profile V1.1” for more details about the
gridprofile.
8.3 DRM
DRM is provided to support several demand response modes by giving control signals as below.
This microinverter can support DRM0/5/6/7/8 when installed with DTU-Pro. The DRM interface on Hoymiles
gateway DTU-Pro is as follows.