2 block formation and safety loops – BECKHOFF TwinSAFE User Manual
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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