ABB ACS355 User Manual page 219

All parameters
No. Name/Value
TORQ BOOST Torque boost should be selected if a high break-away
SCAN START
SCAN +
BOOST
2102 STOP
FUNCTION
COAST
RAMP
SPEED COMP Speed compensation is used for constant distance braking.
Description
torque is required. Used only when parameter
MOTOR CTRL MODE
The drive pre-magnetizes the motor with DC current before
the start. The pre-magnetizing time is defined by parameter
2103 DC MAGN TIME.
Torque boost is applied at start. Torque boost is stopped
when output frequency exceeds 20 Hz or when it is equal to
the reference value. See parameter
CURR.
Note: Starting the drive connected to a rotating motor is not
possible when TORQ BOOST
WARNING! The drive will start after the set pre-
magnetizing time has passed although the motor
magnetization is not completed. In applications where a full
break-away torque is essential, always ensure that the
constant magnetizing time is long enough to allow
generation of full magnetization and torque.
Frequency scanning flying start (starting the drive
connected to a rotating motor). Based on frequency
scanning (interval 2008 MAXIMUM FREQ...2007 MINIMUM
FREQ) to identify the frequency. If frequency identification
fails, DC magnetization is used (see selection
Combines scanning start (starting the drive connected to a
rotating motor) and torque boost. See selections
START and TORQ BOOST. If frequency identification fails,
torque boost is used.
Used only when parameter
setting is SCALAR: FREQ.
Selects the motor stop function.
Stop by cutting off the motor power supply. The motor
coasts to stop.
Stop along a ramp. See parameter group
ACCEL/DECEL.
Speed difference (between used speed and maximum
speed) is compensated by running the drive with current
speed before the motor is stopped along a ramp. See
section Acceleration and deceleration ramps
Actual signals and parameters 219
setting is SCALAR: FREQ.
2110 TORQ BOOST
is selected.
9904 MOTOR CTRL MODE
22
Def/FbEq
4
9904
6
DC MAGN).
7
SCAN
COAST
1
2
3
on page 139.