Parameterization
Parameterized as
Notes
Switch-off delay for stop
category 1
Enabled
Or disabled
Test pulses (output disa‐
bled)
Enabled
Or disabled
7.5
Dual-channel assignment of the safe outputs
For the dual-channel assignment of the safe outputs, two adjacent outputs of
the same plug are used. This assignment cannot be parameterized, refer to
.
K1
K2 (R)
GND
OUT1_Ch2
K1 (R)
M
GND
K2
OUT1_Ch1
Fig. 7-3:
Dual-channel assignment of the outputs
K1 (R) and K2 (R) represent the forced N/C contacts to the state monitoring
of the relay (read-back contacts).
●
Connect these contacts via safe digital outputs.
●
Analyze the readback and thus the state of the switching elements in
the safe application program.
Loss of the safety function due to parasitic
voltage
WARNING
Connect the ground of the actuator to the respective ground terminal point of
the corresponding output on the IndraControl S20 plug. Using an external
ground is not permitted.
The error detection time does not have to be considered for a dual-channel
assignment.
Key data
Actuator
Dual-channel
Attainable SIL/SILCL/Cat./PL
SIL 3/SILCL 3/cat. 4/PL e
Switch on the test pulses to improve the device diagnostics and in
case of long off-intervals.
Device diagnostics and module
behavior in case of error
Bosch Rexroth AG
DOK-CONTRL-S20*SSDO*8*-AP02-EN-P
38/85
IndraControl S20 Module With Safe Digital Outputs S20-SSDO-8/3
Connection examples of the safe outputs