Connecting The Motor Holding Brake - Siemens Sinamics CU240D-2 DP Operating Instructions Manual

4.2.14

Connecting the motor holding brake

Electric shock from live parts in the motor terminal box
The temperature sensor and motor holding brake connections of the converter are at DC
link negative potential. Touching live parts on the motor cable and in the motor terminal box
can result in death or severe injury.
• Power down the converter and disconnect all power cables from the converter before
• Insulate cables in the motor terminal box that are not used.
NOTICE
Device damage when earthing the connections for temperature sensor and motor holding
brake
The temperature sensor and motor holding brake connections are at DC link negative
potential. Earthing any connection of the motor cable will damage the device.
• Insulate cables in the motor terminal box that are not used.
• Do not earth cables that are not used.
The brake is connected to the converter using Pin 4 - Brake (-) and Pin 6 - Brake (+) of the
motor connector.
The converter supplies 180 V DC to the brake.
The brake supply is suitable for brakes which require 400 V AC with rectifier. If there is a
rectifier module in the motor terminal box, you have to remove it and connect the brake
output of the converter directly to the brake coil.
Figure 4-16
Converter with the control units CU240D-2
Operating Instructions, 04/2018, FW V4.9 SP10, A5E34262100B AF
WARNING
connecting or disconnecting the motor temperature sensor or the motor holding brake.
Principle of connectiong the motor holding brake to the converter
Installation
4.2 Electrical Installation
61