ABB ACS880 - Page 256

Def / Type
FbEq 16b / 32b
DescriptionName / Range /
Selection
No.
- / uint16Activates/deactivates the DC hold and post-magnetization
functions. See section DC magnetization (page 68).
Note:
• DC hold is only available with speed control in DTC
motor control mode (see page 26).
• 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.
DC current control21.8
1 = Enable DC hold. See section DC hold (page 68).
Note: The DC hold function has no effect if the start signal
is switched off.
DC holdb0
1 = Enable post-magnetization. See section
Post-magnetization (page 69).
Note: Post-magnetization is only available when ramping
is the selected stop mode (see parameter 21.3 Stop mode).
Post magnetizationb1
Reservedb2…15
1 = 10000h…FFFFh
5.00 rpm / real32
Defines the DC hold speed. See parameter 21.8 DC current
control, and section DC hold (page 68).
DC hold speed21.9
- / -
DC hold speed. For scaling, see parameter 46.1.
0.00 ... 1000.00 rpm
30.0 % / real32Defines the DC hold current in percent of the motor nominal
current. See parameter 21.8 DC current control, and
section DC magnetization (page 68).
DC current reference21.10
1 = 1 % / 10 = 1 %DC hold current.0.0 ... 100.0 %
0 s / uint32Defines 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 control.
Post magnetization
time
21.11
1 = 1 s / 1 = 1 sPost-magnetization time.0...3000 s
256 Parameters