Refer to the following parameter settings for DC braking.


This parameter sets the level of the DC brake current output to the motor during start-up and stop. When you set the DC brake current percentage, the rated current is regarded as 100%. Start with a low DC brake current level, and increase it slowly until the proper brake torque is reached. However, to avoid burning out the motor, the DC brake current can NOT exceed the rated current. Therefore, DO NOT use the DC brake for mechanical retention, otherwise injury or accident may occur.


The motor may continue rotating after the drive stops output due to external forces or to the inertia of the motor itself. If you use the drive with the motor rotating, it may cause motor damage or trigger drive protection due to over-current. This parameter outputs DC current, generating torque to force the motor stop to get a stable start before motor operation. This parameter determines the duration of the DC brake current output to the motor when the drive starts up. Setting this parameter to 0.0 disables the DC brake at start-up.


The motor may continue rotating after the drive stops output due to external forces or the inertia of the motor itself. This parameter outputs DC current, generating torque to force the drive to stop after the drive stops output to make sure that the motor stops.


This parameter determines the start frequency of the DC brake before the drive ramps to stop. When this setting is less than Pr.01-09 (Start-up Frequency), the start frequency of the DC brake starts from the minimum frequency.

The DC brake sequence diagram is as follows.


Use the DC brake before running the motor when the load is movable at stop, such as with fans and pumps. The motor is in free operating status and in an unknown rotation direction before the drive starts up. Execute the DC brake before you start the motor.

Use the DC brake at stop when you need to brake the motor quickly or to control the positioning, such as with cranes or cutting machines.