ABB ACS880 Firmware Manual page 295

No. Name / Range /
Selection
21.8 DC current control
b0 DC hold
b1 Post magnetization
b2...15 Reserved
0000h...FFFFh
21.9 DC hold speed
0.00 ... 1000.00 rpm
21.10 DC current reference
0.0 ... 100.0 %
21.11 Post magnetization
time
0...3000 s
Description
Activates/deactivates the DC hold and
post-magnetization functions. See section
magnetization (page 106).
Note:
• DC hold is only available with speed control in DTC
motor control mode (see page 42).
• DC magnetization causes the motor to heat up.
In applications where long DC magnetization
times are required, externally ventilated motors
should be used. If the DC magnetization period is
long, DC magnetization cannot prevent the motor
shaft from rotating if a constant load is applied
to the motor.
1 = Enable DC hold. See section
Note: The DC hold function has no effect if the start
signal is switched off.
1 = Enable post-magnetization. See section
Post-magnetization (page
Note: Post-magnetization is only available when
ramping is the selected stop mode (see parameter
Stop mode).
Defines the DC hold speed. See parameter
current control, and section
DC hold speed. For scaling, see parameter 46.1.
Defines the DC hold current in percent of the motor
nominal current. See parameter
and section DC magnetization (page
DC hold current.
Defines the length of time for which
post-magnetization is active after stopping the motor.
The magnetization current is defined by parameter
21.10 DC current reference.
See parameter 21.8 DC current
Post-magnetization time.
DC
DC hold (page 106).
107).
21.8 DC
DC hold (page 106).
21.8 DC current control,
106).
control.
Parameters 295
Def / Type
FbEq 16b / 32b
- / uint16
21.3
1 = 1
5.00 rpm / real32
- / -
30.0 % / real32
1 = 1 % / 10 = 1 %
0 s / uint32
1 = 1 s / 1 = 1 s