Siemens Sinamics G110M Operating Instructions Manual page 255

● Grinding machines
● Conveyor belts
DC braking is not permissible in applications involving suspended loads, e.g. lifting
equipment/cranes and vertical conveyors.
Function
NOTICE
Motor overheating as a result of DC braking
The motor will overheat if you use DC braking too frequently or use it for too long. This may
damage the motor.
• Monitor the motor temperature.
• Allow the motor to adequately cool down between braking operations.
• If necessary, select another motor braking method.
With DC braking, the inverter outputs an internal OFF2 command for the time that it takes to
de-energize the motor p0347 - and then impresses the braking current for the duration of the
DC braking.
The DC-braking function is possible only for induction motors.
4 different events initiate DC braking
DC braking when falling below a starting speed
DC braking when a fault occurs
Distributed converter for SIMOGEAR geared motors
Operating Instructions, 09/2017, FW V4.7.9, A5E31298649B AH
Advanced commissioning
6.18 Elektrically braking the motor
Requirement:
p1230 = 1 and p1231 = 14
Function:
1. The motor speed has exceeded the
starting speed.
2. The inverter activates the DC braking as
soon as the motor speed falls below the
starting speed.
Requirement:
Fault number and fault response are assigned
via p2100 and p2101.
Function:
1. A fault occurs, which initiates DC braking
as response.
2. The motor brakes along the down ramp to
the speed for the start of DC braking.
3. DC braking starts.
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