Delta M50A-260 - Page 68

7 Installation
Connecting the communication card
68
Installation and Operation Manual M50A_260 RPI503M260000 Product version L and M EU V1.3 EN 2023-08-14
RS485 connection diagram for a DC1 data collector with multiple inverters
The DC1 data collector from Delta does not have an integrated RS485 termination resistor. Depending on where the DC1 is located in
the RS485 bus, an external RS485 termination resistor may need to be connected, see Fig. 7.4, p. 68.
RS485-1
120Ω
RS485-1
3
4
3
4
Termination resistor =
ON
Termination resistor =
OFF
Termination resistor =
OFF
Termination resistor =
ON
Termination resistor =
ON
Termination resistor =
OFF
Fig. 7.4: RS485 connection diagram for a DC1 data collector with multiple inverters