Danfoss iC7 Series Application Manual page 185

Application Guide | iC7 Series Industry
The application software enables configuration of DC braking for induction motor control.
By default, the DC brake is disabled and parameter 5.6.2.1 DC Start Time is set to 0.
The following settings can be configured:
Speed at which DC braking starts by setting the required speed with parameter 5.7.2.3 DC Brake Speed.
l
Percentage of the brake current to be applied to the motor with parameter 5.7.2.2 DC Brake Current.
l
Duration for which the DC brake is active for a DC-braking current injection with parameter 5.7.2.1 DC-Brake Time.
l
The following illustration shows a DC-braking scenario.
DC Brake Current %
Current
Speed
Frequency
Run Request
Motor control
Figure 66: DC Braking and DC Stop
DC stop and stop delay
Besides the DC brake, the application software allows the configuring of DC stop, which can be used for DC hold or magnetization
purposes. DC stop is configured with parameters 5.7.2.5 DC Stop Current % and 5.7.2.4 DC Stop Time. By default, DC stop is disabled and
the parameter 5.7.2.4 DC Stop Time is set to 0.
DC stop is always applied at zero speed and as the last activity before the drive begins to coast.
Speed
Run Request
Figure 67: DC Stop and Stop Delay
© 2024.05
DC Stop
Current %
DC Brake
DC Brake Time
DC Stop Time
DC stator current control
Current
Stop Zero
Speed Time
Flux control
Time
0
DC Stop
Current %
DC Stop
Time
DC stator current control
AB480436531518en-000601 / 136R0283 |
Parameter Descriptions
185