The 'RS485 module (1 port, DIN rail)' PN2009-A1 provides one fault status relay output ('X5'). The relay reports regular operation and fault. A fault can be a detected earth fault on the isolated side or a power supply fault.
Fault relay connector - 'X5'
Pin | Designator | Connection |
|---|---|---|
1 | NC | Connected to C if fault occurs (normally open) |
2 | C | Common |
3 | NO | Connected to C in regular mode (normally closed) |