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MIcrOSWITcH (OPTION)
4.3 Microswitch (option)
A microswitch can only be retrofitted if the brake is prepared for it. That is why
the variant must be ordered already ex factory.
The microswitch can be used for armature position monitoring or as wear control.
4.3.1 Microswitch as armature position monitoring (default setting)
A microswitch can be used to monitor the switching state of the armature (brake open/
closed). The user is responsible to connect the electrical equipment and to evaluate the
signals! The drive control must not allow the motor to start until the armature was attract-
ed by the magnet, i. e., the lining can rotate freely.
The microswitch is factory-mounted to the brake as well as factory-set and secured.
cAUTION
Malfunction of the brake!
Changing the settings of the microswitch may cause drive / brake mal-
functions.
In case of any malfunction affecting the switching function, check the microswitch set
-
tings and, if necessary, replace the microswitch (see sections below).
4.3.1.1 Checking the microswitch setting for armature position monitoring
cAUTION
Loss of braking efficiency!
Before checking the microswitch settings, mechanically secure the load
against unintended movements and disconnect the brake from load!
By repeatedly switching the brake, check the two switching states:
►
Brake energised: ON signal (microswitch closed)
►
Brake de-energised: OFF signal (microswitch open)
4.3.2 Microswitch as wear control
The wear of the brake can be monitored by a microswitch. The switching point of the
microswitch is set below the wear limit, by way the microswitch emits a signal before
brake malfunction.
The user is responsible to connect the electrical equipment and to evaluate the signals.
The microswitch is factory-mounted to the brake as well as factory-set and secured.
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