BONFIGLIOLI active Applications Manual

06/05 13
06/05 13
4.2.3 Starting the drive
The order of events until the actual start of the drive can be parameterized via various
time constants.
1. The inverter gets the start com-
mand via digital input or serial bus.
2. With the start command (time Ta)
the safety contactor is switched without
delay.
3. After expiry of
Time t1 800 the
magnetizing of the motor starts. If a
safety contactor is used, this time must
be set longer than its reaction time.
4. After the end of the magnetizing
(time Tb) and the expiry of
Time t2
801 the current monitoring is acti-
vated.
5. After expiry of
Time t3 802 the
signal for the release of the brake be-
comes active.
6. After expiry of
Time t4 803 the
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.
T
a
T
b
t
2
t
1
t
3
t
4
start command
activation
safety contactor
activation
holding brake
motor current
monitoring
motor current
reference
frequency
frequency
threshold

BONFIGLIOLI active Specifications

General

Brand	BONFIGLIOLI
Model	active
Category	DC Drives
Language	English