4 Electrical installation
38 Festo – GDCP-CMMS-AS-G2-HW-EN – 1310NH – English
4.8.2 Connecting the screening of the motor cable
If third-party cables are used: Place the complete screening o f the motor-side cable flat
on the plug or motor housing. Maximum length 40 mm.
• Place the complete screening of the motor cable at the screening connection terminal of the related
motor controller so that the leaked current can flow back into the controller causing it.
• Do not use the c omplete screening as strain relief.
For further instructions regarding EMC-compliant wiring of the motor Chapter 4.2.1.
4.8.3 Connection of a holding brake
Holding brakes are not appropriate for braking the motor. They only ser ve for functional
holding of the motor shaft. Additional me asures are required for use in safety-oriented
applications.
Warning
The holding brake integrated in the motor, or an external holding brake c ontrolled by
the motor c ontroller, is not suitable for protecting personnel!
• Provide additional support to protect vertical axes from falling or slipping down
when the motor is switched off through
– mechanical locking of the vertical axis
– an external brake/catch/clamping device or
– sufficient counterbalance of the axis.
• Connect the holding brake to the terminals BR+ [X6.2] and BR- [X6.1]. The brake is supplied from the
logic supply of t he motor controller.
Note
If the motor is warm and there is a n insufficient supply voltage (outside tolerance val-
ues), the holding brake cannot open fully. Result: premature wearing of the brake.
• Make sure the nominal voltage tolerances are maintained at the terminals of the
holding brake ( Tab. A.13, logic supply).
• Observe the maximum output current provided by the motor controller ( Tab. A.13).
In the event of a high power requireme nt, a relay must be connected between the controller and
holding brake.
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