• COM port connection
1. Pin definition for COM
Item
Pin
Drycontact
Pin Definition
NOTE: Pin 3 cannot be short-circuited with any other pin in case of the possible damage
of an inverter.
* You can control the inverter and other external devices through the COM interface.
Professional users can use pins 4 and 5 to realize data acquisition and external control
functions. The communication protocol is Modbus RTU. For details, please contact us.
2. Situation of external equipment controlled by the inverter
USB to RS485
converter
3. Cable connection steps
1
2
60
1
2
Drycontact
+13V
_A(in)
_B(in)
Data Read
Wire stripper
COM
3
4
485A
485B
Crimping tool for RJ45
5
6
Drycontact
GND
_A(out)
Adapter Box
1) White with orange stripes
2) Orange
3) White with green stripes
4) Blue
5) White with blue stripes
6) Green
7) White with brown stripes
8) Brown
7
8
Drycontact
_B(out)
COM