Siemens SINAMICS S120 Equipment Manual page 377

Cable shields and unused power cable conductors (e.g. brake conductors) must be
connected to PE potential to prevent capacitive cross-talk charges.
Non-observance can cause lethal shock voltages.
It is essential to apply the shield for the motor holding brake. Furthermore, only Motion-
Connect cables must be used for integrated motor holding brakes, as otherwise insulation
of the wires is not guaranteed. Risk of electric shock.
CAUTION
Only cables from Siemens must be used for DRIVE-CLiQ connections.
CAUTION
Connecting cables to temperature sensors must always be installed with shielding. The
cable shield must be connected to the chassis potential at both ends over a large surface
area. Temperature sensor cables that are routed together with the motor cable must be
twisted in pairs and shielded separately.
Note
A stabilized DC power supply is required to operate motors with a built-in holding brake. The
voltage is supplied via the internal 24 V busbars. The voltage tolerances of the motor holding
brakes and the voltage drops of the connection cables must be taken into account.
The DC power supply should be set to 26 V. This ensures that the voltage supply for the
brake remains within the permissible range when the following conditions are fulfilled:
• Using Siemens three-phase motors
• Using Siemens MOTION-CONNECT power cables
• Motor cable lengths: max. 100 m
CAUTION
The DC link side covers are supplied as standard with the components; they can also be
ordered separately, if required (order no.: 6SL3162-5AA00-0AA0).
Booksize power units
Manual, (GH2), 06/2008, 6SL3097-2AC00-0BP6
WARNING
DANGER
Motor Modules Booksize Compact
5.2 Safety information
377