BECKHOFF TwinSAFE User Manual
Page 128
Circuit examples
126
Application Guide TwinSAFE
2.21 Drive option AX5805 with stop function SS2 (Category 4,
PL e)
The protective door is connected with a combination of break and make contacts to an EL1904 safe input
terminal. Testing and checking for discrepancy are activated for the input signals. The output is linked on
the AX5805.
The feedback signals are checked via the control and status word returned by the drive option.
AX5805
AX5805
AX5805
AX5805
AX5000
AX5000
AX5000
AX5000
Logical connection in
the EL6900
CLOSED
OPEN
S1
S2
2.21.1 Parameters of the safe input and output terminals
EL1904 (applies to all EL1904 used)
Parameter
Value
Sensor test channel 1 active
Yes
Sensor test channel 2 active
Yes
Sensor test channel 3 active
Yes
Sensor test channel 4 active
Yes
Logic channel 1 and 2
Single Logic
Logic channel 3 and 4
Single Logic