DE-STA-CO F5-B AC Inverter Drive - Manual (Page 41)

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* Braking time depends on the actual frequency.
Adjustment range: 0...9
Resolution: 1
Factory setting: 1
Note: Enter-Parameter
DC-braking Mode 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 on the next page,
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.21 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 Reserved - No Function
8 Reserved - No Function
9 Activates before the acceleration ramp when a direction signal
is given. The time is dependent on CP.21.
If the supply voltage drops to190 V and CP.17=230 V, the inverter will still
provide rated voltage to the motor up until 190V. The output voltage can
not be increased further beyond the input therefore the motor will operate
in field weakening. To calculate at which frequency this will occur use the
following formula:
f = (60Hz/ 230 V)*190 V= 50 Hz
CP.17 = 230V V
supply
= 190V
* Both scenarios above, it is assumed no boost (CP.6=0%).
Adjustment of the Drive