Checks And Maintenance - Pilz PSEN ml b 1.1 Operating Manual

Checks and maintenance

11 Checks and maintenance
It is not necessary to perform maintenance work on the product in normal operation. Please
return any faulty products to Pilz.
Regular inspection of the switch function is required to guarantee the trouble-free, long-
term function.
If the interlock and guard locking system is only used rarely (opening and closing the safety
gate and activating/deactivating the guard locking device), a manual function test is re-
quired.
The correct function of the device should be checked at regular intervals and after each er-
ror.
Test intervals in accordance with EN ISO 14119:
}
for SIL CL 3/PL e at least once per month
}
for SIL CL 2/PL d at least every year
The Appendix contains a
Visual inspection
}
Check that the seal on the security screw on the auxiliary release is intact. If the seal is
not intact, insert the security screw is inserted and use varnish to seal the security screw.
}
Check the safety switch and actuator for damage.
} Check that the safety switch and actuator are firmly secured.
}
Check the offset of the safety switch and actuator.
– Max. lateral offset
– Max. angular offset
– Max. vertical offset
}
Check that the wiring is correct.
}
Remove any dirt from the safety switch and actuator.
Function test
}
The actuator is detected and at the signal output/ diagnostic output Y32 there is a high
signal after detection of the actuator.
} The guard locking device can be activated/deactivated when the safety inputs S31 and
S41 are activated.
} Under these conditions there is a high signal at safety outputs 12 and 22:
– The actuator is detected
– Guard locking pin has successfully been activated (guard locking pin is in the locked
If one of these conditions is not met, the signal at the safety outputs will be low.
Escape release
} Test whether the button of the escape release pin can be detected and reached.
}
Check the function of the escape release.
Operating Manual PSEN ml b 1.1/2.1/2.2
1003884-EN-12
Check list [
position)
78], which should help you perform the test.
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