WARNING
Accidental motor starting
In an unsecured motor circuit, the motor can start accidentally when the microswitch is closed.
This can result in injury and/or material damage.
• Secure the motor circuit accordingly.
In brake modules with microswitches, the microswitch monitors the operating state of the
spring-applied single-disk brake module. The brake module is either open or closed.
• For example, integrate the microswitch into the control circuit for controlling the machine or
the motor.
The microswitch prevents the machine or motor from starting against a closed brake module
if it is integrated correctly.
When ordering, the microswitch is available as an option. It is not possible to subsequently
mount a microswitch.
When the brake module is supplied, the microswitch is adjusted in the factory.
Manual opening of the brake module
WARNING
Accidental drive acceleration after manually operating the brake control module
If you manually open the spring-applied single-disk brake module, the load torque will
accelerate an unbalanced drive. This can result in injury and/or material damage.
• Take special care when inching the brake module open or closed. Make sure that no danger
is posed by the load torque.
Examples of situations in which manual operation of the brake module is necessary include
• Maintenance on the machine or the motor
• Failure of the regular power supply during UPS operation
The spring-applied single-disk brake module can be manually opened via an externally
mounted mechanical manual brake release (accessory).
If you use a commercially available UPS power supply, e.g. a UPS battery system, the brake
module can be opened electrically during a failure of the regular power supply.
• Observe the voltage stated on the nameplate of the brake module when installing a UPS
power supply.
Motor components and options
5.2Options
1PH8 SIMOTICS M main motors
192 Conguration Manual, 12/2022, A5E51895839A
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