Siemens SINAMICS G120 Operating Instructions Manual page 137

OFF2
Motor excitation
Figure 5-13
Commissioning the control logic of a motor holding brake
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
1. Before commissioning, secure any dangerous loads (e.g. loads on inclined conveyor
2. Suppress the motor holding brake control, e.g. by disconnecting the control cables
3. When opening the motor holding brake, ensure that a torque is established that prevents
CU240S and CU240E Control Units, FW 3.2
Operating Instructions, 03/2009, A5E02440075B AA
Inaktiv
Active
finished
P0346
1
0
Open
Closed
Brake Release Time
Function diagram, motor holding brake after an OFF2 command
WARNING
belts)
the load from briefly dropping.
– Check the magnetizing time P0346; the magnetizing time is pre-assigned when
commissioning the system and must be greater than zero
– For V/f operation (P1300 = 0 to 3), set the boost parameters P1310, P1311.
t
t
t
t
t
Brake Closing Time
Functions
5.10 Technological functions
137