Connection of the Components
5.11 Brake Connection
Guide for the SINUMERIK 840D sl machine configuring
5-74 Manual, 07/2006 Edition, 6FC5397-6CP10-0BA0
5.11 5.11 Brake Connection
5.11.1 General Notes
The motors are optionally available with integrated holding brake. The holding brake
prevents the axes from making unwanted movements in the switched off state.
Warning
The use of the motor holding brake as operational brake is not permitted!
Warning
When holding brakes are used, the user must observe the special technological and
machine-specific regulations and standards to ensure the person and machine protection.
In addition, the residual risks must be evaluated, for example, the effects of hanging axes.
5.11.2 Connection of the Brake Directly on the Motor Module
A brake control is integrated in the Motor Module. The maximum output current is 24 VDC
2 A.
The power for the BR+/BR- connection terminals is supplied directly from the integrated 24
VDC power supply busbar.
The connection of the brake supply cable is made at the appropriate terminal blocks
provided on the Motor Module. The brake cables are normally integrated in the
preassembled motor supply cable that is also shielded.
The maximum cable length of the brake supply cable is 50 meters.
● Connection for the device size 3 A to 30 A or 2 x 3 A to 2 x 18 A
The connection is made to the shared -X1 motor connection terminal: BR+/BR- terminal,
max. connectable cross-section 1.5 mm
2
● Connection for device size 45 A to 200 A
The connection is made to a separate -X11 brake connection terminal: BR+/BR- terminal,
max. connectable cross-section 1.5 mm
2
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