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11.2.1 Switch-Off Threshold
The
standstill of the drive is recognized. This percentage parameter value is applied 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.
No.
637 Switch-Off Threshold
Attention! If the motor builds up a stopping torque, it may be possible that the
11.2.2 Holding Time
The
6. Controlling to zero speed results in the motor heating up and should only be done
for a short period in the case of internally ventilated motors.
No.
638 Holding Time
11.3
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
be done for a short period in the case of internally ventilated motors.
No.
631 Braking Current
The setting of the parameter
behavior. Contact-controlled operation of the direct current brake is activated by enter-
ing the value zero for the
Time controlled:
The direct current brake is controlled by the status of signals Start clockwise and Start
anticlockwise. The current set by the parameter
time set by the parameter
status of both signals Start clockwise and Start anticlockwise are logical 0 (low) or
logical 1 (high).
100
100
Switch-off Threshold Stop Function
Maximum Frequency
419.
Parameter
Description
switch-off threshold stop function is not reached due to the slip fre-
quency and the standstill of the drive is not recognized. In this case,
increase the value of the
Holding Time Stop Function
Parameter
Description
Direct current brake
Braking current
Parameter
Description
Braking Time
Braking Time
Operating Instructions ACTIVE
Operating Instructions ACTIVE
637 defines the frequency as from which a
Min.
0.0 %
Switch-off Threshold Stop Function
638 is considered in stopping behaviors 1, 3, 4 and
Min.
0.0 s
631 results in the motor heating up and should only
Min.
0.00 A
Braking Time
632 defines the time-controlled stopping
632.
Braking Current
632 has expired. During the braking time the
Settings
Max.
Fact. sett.
100.0 %
1.0 %
637.
Settings
Max.
Fact. sett.
200.0 s
1.0 s
Settings
Max.
Fact. sett.
√2⋅I
√2⋅I
FIN
FIN
631 flows until the
06/07
06/07
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