Motor Holding Brake - Siemens SINAMICS V90 Operating Instructions Manual

4.7

Motor holding brake

The motor holding brake is used to prevent the moving load from unwanted motions (for
example, falling under the influence of gravity) when the servo system is deactivated (for
example, the servo power is shut off). The servo motor can move because of its own weight
or an external force even the motor power has been cut off.
The holding brake is built in the servo motors with brakes.
For 400 V variant servo drive, a motor holding brake interface (X7) is integrated in the front
panel. You can connect it to a servo motor with brake to use the function of motor holding
brake directly.
For 200 V variant servo drive, no specific interface is integrated. To use the function, you
need to connect the drive to a third-party device via the control/status interface (X8).
Note
• Use this brake for the "hold" purpose only, that is, to hold the stalling state only. Never
use this for the "brake" purpose to stop the load in motion. Use the holding brake only to
hold a stopped motor.
• The holding brake is activated at the same time when the motor power is cut off.
Motor holding brake interface - drive side (for the 400 V variant servo drive only)
Maximum conductor cross-section: 1.5 mm
Input voltage tolerance: 24 V ± 10%
Brake connector - motor side
Low inertia motor, shaft height: 20 mm, 30 mm and 40 mm
SINAMICS V90, SIMOTICS S-1FL6
Operating Instructions, 04/2017, A5E37208830-003
Illustration Signal
B+
B-
Illustration Pin No.
1
2
24 V, motor brake voltage positive
0 V, motor brake voltage negative
2
Signal
Brake+ Phase Brake+
Brake- Phase Brake-
4.7 Motor holding brake
Description
Description
Connecting
113