PMUT X1P
Operating Manual PMUT X1P
20587-EN-06
20
Faults – Interference
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Failure of the supply voltage during the muting cycle or simultaneity time is exceeded:
Operation of the key switch resets the simultaneity requirement. The muting cycle is re-
started.
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High signal at semiconductor output Y34 (muting lamp 1 defective): Switching from
muting lamp ML1 to muting lamp ML2 during muting may cause the safety contacts to
latch. In this case it will no longer be possible to start the PMUT X1P simply by operat-
ing the key switch. Alternatively, follow the instructions below:
– Operate key switch and interrupt ESPE
or
– Operate additional safety contact at S51-S52 or S61-S62
or
– Disconnect the unit from the supply.
To guarantee the availability of the muting controller, change the defective muting lamp
ML1 as quickly as possible.
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Earth fault S43, S33, S34, Y1, Y2, S11,S12 to GND: the supply voltage fails and the
safety contacts open. Once the cause of the fault has been removed and supply
voltage is maintained, the unit will be ready for operation after approximately 5 s.
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Contact malfunctions: If the contacts have welded, reactivation will not be possible after
the input circuit has opened.
Dimensions in mm
* With spring-loaded terminals
