KEB COMBIVERT F5 series Installation Manual & Operation Manual page 27

Special Adjustments
DC-braking Mode
DC-braking Time
During DC-braking, the motor is not decelerated by a controlled ramp. Quick
braking without regen voltage can be achieved by applying a DC voltage
to the motor winding. Parameter values listed below, determine how the
DC-braking is triggered.
Value DC-Braking Activation
0 Deactivated
1 Activates when direction signal is removed and the output frequency
has reached 0Hz. The braking time is dependent on CP.23 or until
the next direction of rotation.
2* Activates as soon as the direction signal is removed.
3* Activates as soon as the direction signal is removed or
changed.
4* Activates as soon as the direction signal is removed and if the
real frequency goes below 4 Hz.
5* Activates when the real frequency goes below 4 Hz.
6* Activates as soon as the set value goes below 4 Hz.
7* Activates when input I4(terminal 13) is switched.
8 Activates as long as input I4 is switched.
9 Activates before the acceleration ramp when a direction signal is
given. The time is dependent on CP.23.
* Braking time depends on the actual frequency.
Adjustment range:
Resolution:
Factory setting:
Note:
If the braking time depends on the actual frequency (CP.22 = 2...7), it is
calculated as follows:
CP.23 x f
t = –––––––––
Brake
100 Hz
Otherwise the braking time corresponds to CP.23.
Adjustment range:
Resolution:
Factory setting:
0...9
Enter-Parameter
real
0.00...100.00 s
0.01 s
10.00 s
1
7
f
100 Hz
f
actual
t
CP.23
Brake
t
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