NORD Drivesystems BU0100 - Manual (Page 14)

NORDAC SK 150E
14 Technical modifications observed BU 0100 GB
P 1
P 2
P 3
P 4
P 2
Operating mode "01"
These and the subsequent operating
modes work with an "increased initial
breakaway torque" during start-up.
That means, an increased (in some
cases, possibly also a reduced)
torque is realized during start-up at
the motor for an adjustable time. The
drive subsequently begins as starting
ramp whose initial torque and time
can again be set. For instance, an
initial breakaway torque can be
generated.
As can be seen in the graphic, a
torque (or voltage) set with P3 can be
realized at the motor immediately after release [RUN-R]. After the time set at P4, the torque (voltage at motor)
is reduced to the value set at P1. The starting ramp begins here and reaches the maximum moment (full
voltage at motor) after the time set in P2. This time also applies to the run-down ramp after removing the
release [RUN-R].
Operating mode "10"
This operating mode only differs from
the previous "01" by the switch-off
characteristics. After removing the
release [RUN-R], the voltage is
switched off at the motor causing the
drive to coast to a stop. The brake
applies only after the time set at P2
elapses.
Operating mode "11"
Again, this operating mode differs
from the previous "10" only in the
point in time when the brake becomes
active. If at "10" some time first
elapses then here the brake applies
immediately after removing the
release [RUN-R]. The drive cannot
coast to a stop.
P 1
P 2
P 3
P 4
Brake
Time
RUN-R
Brake
System
voltage
Time
RUN-R
P 1
P 2
P 3
P 4
P 2
System
voltage
System
voltage
RUN-R
Brake
Time