BECKHOFF TwinSAFE - Manual (Page 64)

Circuit examples
62 Application Guide TwinSAFE
2.10.1 Parameters of the safe input and output terminals
EL1904 (upper EL1904 on the drawing)
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
EL1904 (lower EL1904 on the drawing)
Parameter Value
Sensor test channel 1 active No
Sensor test channel 2 active No
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
EL2904 (applies to all EL2904 used)
Parameter Value
Current measurement active Yes
Output test pulses active Yes
2.10.2 Block formation and safety loops
2.10.2.1 Block 1
EL1904
S1
S2
EL1904
S3
S4
K1
K2
EL6900 EL2904