Checks and maintenance
Operating Manual PSENmlock mini, PSEN mlm 1 sa 1.1/2.1/2.2
1005802-EN-02-Draft
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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 Pl d, at least once a year
Visual inspection
} Check the safety switch and actuator for damage.
Replace the damaged safety switch and actuator.
} Check that the safety switch and actuator are firmly secured.
Tighten the fixing screws using the appropriate torque.
} 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.
} (Optional) Check that the seal on the auxiliary release is intact. If the seal is not intact,
use varnish to seal the auxiliary release at the area marked.
Function test
} When inserted into the safety switch, the actuator is detected and the safety gate LED
lights up a constant yellow.
} 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
position)
If one of these conditions is not met, the signal at the safety outputs will be low.
Series connection of the safety channels
Before commissioning and after each change, check that the safety function is guaranteed
when the gates are opened. To do this, open each gate individually and check the status at
the inputs on the evaluation device:
} Close all the gates.
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