Electrical Connections
57
■ COM Communication denition
COM communication interface is mainly provided for customization the sec-
ond step of development use. The inverter supports the control of external
equipment or external equipment control through communication. For exam-
ple, the inverter adjusts the working mode of the heat pump and so on.
1. Application occasion
COM is a standard communication interface, through which the monitoring
data of the inverter can be directly obtained. Also, external communication
devices can be connected to carry out the secondary development of the in-
verter. For specic technical docking, please contact us.
1.1 External communication
Data Read
RS485
2.Pin denition for DRM
Pin 1 2 3 4 5 6 7 8
Pin
Definition
DRM1/5 DRM2/6 DRM3/7 DRM4/8 RG/0 CL/0 X X
1.2 Inverter communication to control external equipment
Adapter
Box
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