Starting The Drive - BONFIGLIOLI ACTIVE Applications Manual

4.2.3
The order of events until the actual start of the drive can be parameterized via various
time constants.
1.
2.
3.
4.
5.
6.
06/05
06/05

Starting the drive

The inverter gets the start com-
mand via digital input or serial bus.
With the start command (time Ta)
the safety contactor is switched without
delay.
Time t1
After expiry of
magnetizing of the motor starts. If a
safety contactor is used, this time must
be set longer than its reaction time.
After the end of the magnetizing
(time Tb) and the expiry of
801 the current monitoring is acti-
vated.
Time t3
After expiry of
signal for the release of the brake be-
comes active.
Time t4
After expiry of
drive starts. The reference speed is in-
creased with the set ramp gradient.
This time should be set to the reaction
time when releasing the mechanical
brake.
start command
activation
safety contactor
motor current
800 the
monitoring
motor current
Time t2
activation
holding brake
802 the
reference
frequency
803 the
frequency
threshold
t
t t t
1
2 3 4
T T
a b
13
13