Commissioning
The following applications require special settings of the motor holding brake. In these
cases, the motor holding brake control may only be commissioned by experienced
personnel:
• All applications that involve moving and transporting people
• Hoisting gear
• Elevators
• Cranes
● Before commissioning, secure any dangerous loads (e.g. loads on inclined conveyors)
● Suppress the motor holding brake control, e.g. by disconnecting the control cables
● When opening the motor holding brake, ensure that a torque is established that prevents
● Assigning parameters for the opening and closing times of the motor holding brake.
● Reestablish the control of the motor holding brake.
SINAMICS G120C Inverter
Operating Instructions, 01/2011, FW 4.4, A5E02999804A AB
WARNING
the load from briefly dropping.
– Check the magnetizing time p0346; the magnetizing time is pre-assigned during
commissioning and must be greater than zero
– V/f control (p1300 = 0 to 3):
Set the boost parameters p1310 and p1311.
Define the motor torque when switching on using p1351 and p1352.
– Vector control (p1300 ≥ 20):
Define the motor torque when switching on using p1475.
It is extremely important that electromechanical brakes are controlled with the correct
timing in order to protect the brakes against long-term damage. The exact values can be
found in the technical data of the connected brake. Typical values:
– Depending on the brake size, brake opening times lie between 25 ms and 500 ms.
– Depending on the brake size, brake closing times lie between 15 ms and 300 ms.
r0052.12 ("Motor holding brake open") controls the brake.
8.9 Application-specific functions
Functions
219