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July 2022
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Electrical installation
Figure 13: Terminals for connecting the relay outputs (blue border)
RELAY 3 (Relay 3): Device error
Terminal designation
Description
Connection
8 COM
Relay 3 COM
common connection
see page 9
"Load capacity
9 NC
Relay 3 NC
normally closed
10 NO
Relay 3 NO
de-energised open
Relay 3 Function Reporting of unit faults:
If a device error occurs or the device is switched off, relay 3 has dropped out (connection from COM
to NC). In addition, the symbol R3 is not marked in the display.
Relay 3 is energised in the fault-free device state (connection from COM to NO), this serves to
protect against wire breakage. In addition, the symbol R3 is marked in black in the display.
The switching behaviour of relay 3 is inverted. This makes it possible to
detect a switched-off device as well as a wire breakage.