Setting Parameters
09/01 AWB8230-1412GB
82
DC braking (DC-Break)
To activate DC braking, apply a stop signal (PNU A51 to A55). By
applying a pulsed DC voltage to the motor stator, a braking torque
is induced in the rotor and acts against the rotation of the motor.
With DC braking, a high level of stopping and positioning accuracy
can be achieved.
Caution!
DC braking results in additional heating of the motor. You
should therefore configure the braking torque (PNU A54)
as low and the braking duration (PNU A55) as short as
possible.
PNU Name Adjustable in
RUN mode
Value Function WE
A51 DC braking active/
inactive
– 00 DC braking is not used (is inactive) 00
01 DC braking is used (is active)
A52 DC braking starting
frequency
0.5 to 10 Hz DC braking is active if the frequency is less than the frequency
entered here.
0.5
A53 DC braking waiting
time
0.0 to 5 s When the frequency set with PNU A52 is reached, the motor
coasts for the time duration entered here before DC braking is
activated.
0.0
A54 DC braking torque
0 to 100 % Adjustment range for the level of braking torque. 0
A55 DC braking duration
0.0 to 60 s The time during which DC braking is active. 0.0
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