PNOZ s5
Operating Manual PNOZ s5
21397-EN-10
15
Important for detection of shorts across contacts:
As this function for detecting shorts across contacts is not failsafe, it is tested by Pilz during
the final control check. If there is a danger of exceeding the cable runs, we recommend the
following test after the installation of the device:
1. Unit ready for operation (output contacts closed)
2. Short circuit the test terminals S12, S22 for detecting shorts across the inputs.
3. The unit's fuse must be triggered and the output contacts must open. Cable lengths in
the scale of the maximum length can delay the fuse triggering for up to 2 minutes.
4. Reset the fuse: remove the short circuit and switch off the supply voltage for approx. 1
minute.
NOTICE
If you connect contact expansion modules to a base unit with a universal
power supply, you will need to limit the conventional thermal current at the
contact expansion modules' safety contacts to 70% of the stated current
(see technical details for contact expansion module).
Preparing for operation
Operating modes and delay time
The operating mode and delay time are set via the rotary switches on the unit. You can do
this by opening the cover on the front of the unit.
NOTICE
Do not adjust the rotary switch during operation, otherwise an error mes-
sage will appear, the safety contacts will open and the unit will not be ready
for operation until the supply voltage has been switched off and then on
again.
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