Configuration / operation
10.2 Explanation of the device's functions
3SK1 safety relays
182
Manual, 04/2013, A5E02526190021A/RS-AA/01
When using a 3SK1 safety relay with instantaneous and time-delayed contacts, the two following
safety notes must always be observed:
NOTICE
In the event of external faults such as:
•
Cross-circuit fault
•
Short circuit to ground
•
Current-source short circuit
and to access the configuration mode for copying a delay time after a reset, the following
device behavior must always be taken into account:
The outputs of stop category 0 switch instantaneously, while the outputs of stop category 1
have a time delay.
The sequence cannot be interrupted.
Exception: Switching off the power supply.
NOTICE
If the safe state is restored during the time delay, (e.g. the protective door is closed) and
the START button is actuated, the enabling circuits switch to the active position
immediately after the delay time has elapsed. The actuation of the START button is saved.
NOTICE
Observe the following in the case of protective doors with tumblers:
If the voltage Us is disconnected on devices with time-delayed outputs between switching
the instantaneous outputs and the time-delayed outputs, the delay time expires when the
voltage Us is restored, and the time-delayed contacts change their switch positions.
Summary of Contents for SIRIUS 3SK1
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Page 10: ...Table of contents 3SK1 safety relays 10 Manual 04 2013 A5E02526190021A RS AA 01 ...
Page 186: ...Commissioning 3SK1 safety relays 186 Manual 04 2013 A5E02526190021A RS AA 01 ...
Page 258: ...Accessories 3SK1 safety relays 258 Manual 04 2013 A5E02526190021A RS AA 01 ...
Page 260: ...Appendix A 1 Correction sheet 3SK1 safety relays 260 Manual 04 2013 A5E02526190021A RS AA 01 ...
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