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4.3 Outputs – back of case
Both a line A and a line B output interface are com-
bined in an output field on the back of the case. It
comprises both D-sub 9 connectors for the connec-
tion of the interface, the switches for the configura-
tion of the outputs and the signal LEDs for monitor-
ing the status of both interfaces.
The switches of both output interfaces have the following pin configuration:
Pin RS422 RS232
1 - -
2 Rx+ Rx
3 Tx+ Tx
4 - -
5 GND GND
6 - -
7 Tx- -
8 Rx- -
9 - -
Both output interfaces can be configured as follows:
Switch Status Meaning
1 Ax
RS422 (OFF) Output Ax is operated as RS422 interface.
RS232 (ON) Output Ax is operated as RS232 interface.
2 Disable Rx Ax
OFF The backward channel from Ax to input A is disabled.
ON The backward channel from Ax to input A is activated.
3 Bx
RS422 (OFF) Output Bx is operated as RS422 interface.
RS232 (ON) Output Bx is operated as RS232 interface.
4 Disable Rx Bx
OFF The backward channel from Bx to input B is disabled.
ON The backward channel from Bx to input B is activated.
4.4 Supply
The power supply connector has the following pin configuration:
Terminal Description
1 DC In+ Input for external DC supply 24-65V
2 DC In- Earth connection for external DC supply
In order to guarantee safe operation with regard to EMC, the device may be optionally
connected to earth via the functional earth port.
4.5 Alarm relay
The alarm relay contacts are configured as follows:
Terminal Connection Description
3 Alarm relay opener Opens on alarm
4 Alarm relay closer Closes on alarm
5 Alarm relay changeover Joint pickup
The relay contacts can carry the following loads:

30W (max. 60 VDC or max. 1A) or

60VA (max. 30 VAC or max. 1A)
Functional earth port