4.5.1. RS-485 Connection
The pin definition of RS-485 is shown in table 4-6. Different RS-485
connection needs different set up of the terminal resistor.
•
When single inverter is installed, the terminal resistor on its communication
module should be switched ON.
• When multi-inverters in chain as shown in Figure 4-17, only the first and
last inverter’s terminal resistor must be switched ON.
Please refer to table 4-7 for the terminal resister setting.
Pin Function
1 VCC (+12V)
2 GND
3 DATA+
4 DATA-
5 DATA+
6 DATA-
Table 4-6 Definition of RS 485 pin
Figure 4-17 Multi-inverter connection illustration
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