Behavior Of The Outputs In The Event Of Enabled Switch-Off Delay For Stop Category 1 - Bosch Rexroth IndraControl S20 Manual

DOK-CONTRL-S20*PSDO*8*-AP02-EN-P
IndraControl S20 Module With Safe Digital Outputs S20-PSDO-8/3
6.3 Behavior of the outputs in the event of enabled switch-off
delay for stop category 1
Switching off outputs
By the safe controller
After a bus error
After a short circuit, cross-circuit, failure
of the supply voltage or hardware fault
Fig. 6-2 Switching off of the outputs according to the trigger event and the parameterization
The time until the outputs are actually switched off depends on the parameteriza-
tion of the switch-off delay and the event that causes the outputs to be switched off.
Influence of set switch-off
delay
Yes
Yes
No
WARNING
Stop category 1 results in delayed switch-off.
• Note the following for stop category 1:
– The affected outputs are only set to the safe state once the switch-off
delay has elapsed.
In the event of an error (excluding bus errors) the affected outputs are switched off
immediately (without delay). In this case, only stop category 0 is supported.
WARNING
Selecting the wrong switch-off delay can result in incorrect safety distances being
designed.
• When designing the safety distances, take the selected switch-off delay into
consideration.
For switch-off, please take into consideration the following:
– Switch-off can be interrupted by switching the output on again.
– If the parameterization of the module is modified, the modified
parameterization does not take effect until all the outputs have been
switched off.
– If the parameterization is modified before switch-off is complete, a
diagnostic message is generated.
– If the parameterization is modified, this can result in delayed startup due
to the switch-off delay.
• Carry out a validation every time the parameterization is modified.
Bosch Rexroth AG
Parameterization of the module
Switching off outputs
Once the set switch-off delay has elapsed
Once the set switch-off delay has elapsed
Immediately (only stop category 0)
Delayed switch-off
Incorrect/insufficient safety distances
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