Commissioning
5.6 Function commissioning
SINAMICS V20 Inverter
Operating Instructions, 07/2012, A5E03728167
77
Connecting the motor holding brake
The motor holding brake can be connected to the inverter via digital outputs (DO 1 / DO 2).
An additional relay is also required to allow the digital output to enable or disable the motor
holding brake.
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WARNING
If the inverter controls the motor holding brake, then a commissioning may not be carried
out for potentially hazardous loads (e.g. suspended loads for crane applications) unless the
load has been secured.
It is not permissible to use the motor holding brake as operating brake. The reason for this
is that generally it is only designed for a limited number of emergency braking operations.
5.6.2.6 Setting the ramp time
Functionality
The ramp-function generator in the setpoint channel limits the speed of setpoint changes.
This causes the motor to accelerate and decelerate more smoothly, thereby protecting the
mechanical components of the driven machine.
Setting ramp-up / down time
The ramp-up and ramp-down times can be set independently of each other by P1120 and
P1121.
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