ABB ACQ80-04 Firmware Manual page 95

No. Name/Value
Const time
Automatic
Torque boost
Automatic+boost
21.22 Start delay
0.00...60.00 s
21.23 Smooth start
Disabled
Enabled always
Start only
Description
The drive pre-magnetizes for 500ms the motor before start.
This mode should be selected if constant pre-magnetizing
time is required. This setting also guarantees the highest
possible break-away torque when the pre-magnetizing time is
set long enough.
Note: This mode cannot be used to start into a rotating motor.
WARNING! The drive will start after the set pre-
magnetizing time has passed even if motor
magnetization is not completed. In applications where
a full break-away torque is essential, ensure that the constant
magnetizing time is long enough to allow generation of full
magnetization and torque.
The drive automatically selects the correct output frequency
to start a rotating motor. This is useful for flying starts: if the
motor is already rotating, the drive will start smoothly at the
current frequency.
Note: Cannot be used in multimotor systems.
The drive pre-magnetizes for 500ms the motor before the
start.
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.
This mode should selected if a high break-away torque is
required.
Note: This mode cannot be used to start into a rotating motor.
WARNING! The drive will start after the set pre-
magnetizing time has passed even if motor
magnetization is not completed. In applications where
a full break-away torque is essential, ensure that the constant
magnetizing time is long enough to allow generation of full
magnetization and torque.
Automatic start with torque boost.
Automatic start is performed first and the motor is
magnetized. If the speed is found to be zero, torque boost is
applied.
Defines the start delay. After the conditions for start have
been fulfilled, the drive waits until the delay has elapsed and
then starts the motor. During the delay, warning
delay is shown.
Start delay can be used with all start modes.
Start delay
Selects the forced current vector rotation mode at low
speeds. When the smooth start mode is selected, the rate of
acceleration is limited by the acceleration and deceleration
ramp times. If the process driven by the permanent magnet
synchronous motor has high inertia, slow ramp times are
recommended.
Can be used for permanent magnet synchronous motors
only.
Disabled.
Enabled always.
Enabled when starting the motor.
Parameters 95
Def/FbEq16
1
2
3
4
10.00
AFE9 Start
1 = 1
Disabled
0
1
2