Switch-Off Threshold; Holding Time; Direct Current Brake - BONFIGLIOLI ACTIVE CUBE 201 Operating Instructions Manual

13.2.1

Switch-Off Threshold

The
Switch-Off Threshold.
recognized. This percentage parameter value is relative to the set
The switch-off threshold is to be adjusted according to the load behavior of the drive and the device
output, as the drive must be controlled to a speed below the switch-off threshold.
Parameter
No. Description
637 Switch-Off Threshold
WARNING
If the motor builds up a stopping torque, it may be possible that the switch-off
threshold stop function is not reached due to the slip frequency and the standstill of
the drive is not recognized. In this case, increase the value of the
Threshold
13.2.2

Holding Time

The 638 is considered in stopping behavior 1, 3, 4 and 6. Control to Zero speed
Holding Time
results in the motor heating up and should only be done for a short period in the case of internally
ventilated motors.
Parameter
No. Description
638 Holding time stop function
13.3

Direct current brake

Stopping behaviors 3, 6, 7 and the search run function include the direct current brake. Depending
on the setting of the stop function, a direct current is impressed into the motor either directly or,
when it is at a standstill, after the demagnetization time. The impression of the
631 results in the motor heating up and should only be done for a short period in the case of
internally ventilated motors.
Parameter
No. Description
631 Braking current
I : Rated value of frequency inverter
FIN
The setting of the parameter
Contact-controlled operation of the direct current brake is activated by entering the value zero for
the 632.
Braking Time
Time controlled:
The direct current is controlled by the status of the signals Start clockwise and Start anticlockwise.
The current set by the parameter
632 has elapsed.
Braking Time
For the duration of the braking time, the control signals Start clockwise and Start anticlockwise are
logical 0 (Low) or 1 (High).
138
637 defines the frequency as from which a standstill of the drive is
Min.
0.0 %
637.
Min.
0.0 s
Min.
0.00 A
632 defines the time-controlled stopping behavior.
Braking Time
Braking Current
Operating Instructions ACU
Maximum Frequency
Setting
Max.
100.0 %
Setting
Max.
200.0 s
Setting
Max.
2I
FIN
631 flows until the time set by the parameter
419.
Factory setting
1.0 %
Switch-Off
Factory setting
1.0 s
Braking Current
Factory setting
2I
FIN
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