Def / Type
FbEq 16b / 32b
DescriptionName / Range /
Selection
No.
500 ms / uint16Defines the pre-magnetization time when
•
parameter 21.1 Start mode is set to Constant time
(in DTC motor control mode), or
•
parameter 21.19 Scalar start mode is set to Const
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:
Constant magnetizing timeMotor rated power
≥ 50 to 100 ms< 1 kW
≥ 100 to 200 ms1 to 10 kW
≥ 200 to 1000 ms10 to 200 kW
≥ 1000 to 2000 ms200 to 1000 kW
Note: This parameter cannot be changed while the drive
is running.
Magnetization time21.2
1 = 1 ms / 1 = 1 msConstant DC magnetizing time.0...10000 ms
Coast / uint16Selects the way the motor is stopped when a stop
command is received.
Additional braking is possible by selecting flux braking (see
parameter 97.5 Flux braking).
Note: This parameter has no effect in a follower drive in a
master/follower configuration.
Stop mode21.3
0Stop by switching off the output semiconductors of the
drive.
The motor coasts to a stop.
WARNING!
If a mechanical brake is used, ensure it is safe to
stop the drive by coasting.
Coast
1Stop along the active deceleration ramp. See parameter
group 23 Speed reference ramp (page 271).
Ramp
2
Stop according to torque limits (parameters 30.19 and
30.20).
Torque limit
Ramp stop (Off1);
Coast stop (Off2)
(95.20 b1); Eme ramp
stop (Off3) (95.20 b2)
/ uint16
Selects the way the motor is stopped when an emergency
stop command is received.
The source of the emergency stop signal is selected by
parameter 21.5 Emergency stop source.
Emergency stop
mode
21.4
252 Parameters
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