ABB ACS280 Firmware Manual page 137

No. Name/Value
Automatic
21.02 Magnetization time
0...10000 ms
21.03 Stop mode
Coast
Ramp
Torque limit
Description
Automatic start guarantees optimal motor start in
most cases. It includes the flying start function
(starting into a rotating motor) and the automatic
restart function. The drive motor control program
identifies the flux as well as the mechanical state of
the motor and starts the motor instantly under all
conditions.
99.04 Motor control mode
Note: If parameter
Scalar
, no flying start or automatic restart is possible
21.19 Scalar start mode
unless parameter
Automatic
.
Defines the pre-magnetization time when
21.01 Start mode
• parameter
vector motor control mode), or
21.19 Scalar start mode
• parameter
time
(in scalar motor control mode).
After the start command, the drive automatically
premagnetizes the motor for the set time. To ensure
full magnetizing, set this parameter to the same value
as, or higher than, the rotor time constant. If not
known, use the rule-of-thumb value given in the table
below:
Motor rated power
< 1 kW
1 to 10 kW
10 to 200 kW
200 to 1000 kW
Note: This parameter cannot be changed while the
drive is running.
Constant DC magnetizing time.
Selects the way the motor is stopped when a stop
command is received.
Additional braking is possible by selecting flux
braking (see parameter
Stop by switching off the output semiconductors of
the drive. The motor coasts to a stop.
WARNING! If a mechanical brake is used, make
sure it is safe to stop the drive by coasting.
Stop along the active deceleration ramp. See
23 Speed reference ramp
parameter group
Frequency reference chain
Stop according to torque limits (parameters
30.20
and ). This mode is only possible in vector
motor control mode.
is set to
is set to
Const time
is set to
Const
is set to
Constant magnetizing time
> 50 to 100 ms
> 100 to 200 ms
> 200 to 1000 ms
> 1000 to 2000 ms
97.05 Flux braking
).
28
or
.
30.19
Parameters 137
Default
FbEq 16
2
500 ms
(in
1 = 1 ms
Ramp
0
1
2