Start/Stop; Select - ABB ACS150 User Manual

84
Parameters in the Long Parameter mode
Index Name/Selection

21 START/STOP

2101 START FUNCTION
1 = AUTO
2 = DC MAGN
4 = TORQ BOOST
6 = SCAN START
7 = SCAN+BOOST
2102 STOP FUNCTION
1 = COAST
2 = RAMP
2103 DC MAGN TIME
0.00...10.00 s
2104 DC HOLD CTL
0 = NOT SEL
2 = DC BRAKING
Actual signals and parameters
Description
Start and stop modes of the motor
Selects the motor starting method.
Frequency reference ramps immediately from 0 Hz.
The drive pre-magnetises the motor with DC current before the start.
The pre-magnetising time is defined by parameter
Note: Starting to a rotating machine is not possible when DC MAGN is
selected.
WARNING! The drive will start after the set pre-magnetising time has passed
even if the motor magnetisation is not completed. Ensure always in
applications where a full break-away torque is essential, that the constant
magnetising time is long enough to allow generation of full magnetisation and
torque.
Torque boost should be selected if a high break-away torque is required.
The drive pre-magnetises the motor with DC current before the start.
The pre-magnetising time is defined by parameter
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 2110 TORQ BOOST CURR.
Note: Starting to a rotating machine is not possible when TORQ BOOST is
selected.
WARNING! The drive will start after the set pre-magnetising time has passed
although the motor magnetisation is not completed. Ensure always in
applications where a full break-away torque is essential, that the constant
magnetising time is long enough to allow generation of full magnetisation and
torque.
Frequency scanning flying start (starting to a rotating machine). Based on
frequency scanning (interval
FREQ) to identify the frequency. If frequency identification fails, DC
magnetisation is used (see selection DC MAGN).
Combines frequency scanning flying start (starting to a rotating machine) and
torque boost. See selections SCAN START and TORQ BOOST. If frequency
identification fails, torque boost is used.
Selects the motor stop function.
Stop by cutting off the motor power supply. The motor coasts to a stop.
Stop along a ramp. See parameter group
Defines the pre-magnetising time. See parameter
After the start command, the drive automatically pre-magnetises the motor
the set time.
Magnetising time. Set this value long enough to allow full motor
magnetisation. Too long time heats the motor excessively.
Activates the DC braking function.
Inactive
DC current braking function active.
If parameter 2102 STOP FUNCTION is set to COAST, DC braking is applied
after the start command is removed.
If parameter 2102 STOP FUNCTION is set to RAMP, DC braking is applied
after the ramp.
2103
2103
2008 MAXIMUM FREQ...2007
22 ACCEL/DECEL.
2101
Def
1 = AUTO
DC MAGN TIME.
DC MAGN TIME.
MINIMUM
1 = COAST
START FUNCTION. 0.3
0 = NOT SEL