Stopping The Drive - BONFIGLIOLI ACTIVE Applications Manual

4.2.4
Stopping the drive up to standstill of the drive can be parameterized via various time
constants. The parameterized
nals
1.
2.
3.
4.
5.
14
14

Stopping the drive

Start clockwise
STR and
If the internal reference frequency
(output of the ramp function) is smaller
Frequency threshold
than the
(time Tc), the sequence of the shut-
down function starts. The percentage is
Maximum frequency
set relative to the
419.
Time t13
After 806 the signal of
the holding brake is deactivated. To re-
duce wear and tear, this time should be
set in such a way that the drive is at a
standstill before the brake closes.
If the signal is to be deactivated when
the drive is still rotating, this time is to
Frequency
be set to zero and the
threshold
809 increased if need be. A
long reaction time of the mechanical
brake in closing can thus be compen-
sated.
Time t12
After expiry of
current monitoring is deactivated. This
time constant should be at least equal
to the reaction time of the mechanical
brake in closing.
Time t11
After expiry of
blocked. The current in the motor goes to zero.
Time t15
After expiry of
vated. As the deceleration time of a relay is normally distinctly longer than the time
needed for the current reduction, this time can remain at the figure zero (factory
setting) in most cases.
Stopping behavior
630 as a function of the digital sig-
Start Anti-clockwise
STL is to be observed.
start command
809
activation
safety contactor
motor current
monitoring
motor current
activation
holding brake
reference
frequency
frequency
threshold
805 the
804 the power parts of the frequency inverter are
807 the signal to close the safety switch is deacti-
t
t t t
13 12 11 15
T
c
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