ABB ACS880 Series, Firmware Manual

Page: 295 / 764

Def / Type
FbEq 16b / 32b Description Name / Range /
Selection No.
- / uint16 Activates/deactivates the DC hold and
post-magnetization functions. See section
DC
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.
DC current control 21.8
1 = Enable DC hold. See section DC hold (page 106) .
Note: The DC hold function has no effect if the start
signal is switched off.
DC hold b0
1 = Enable post-magnetization. See section
Post-magnetization (page 107) .
Note: Post-magnetization is only available when
ramping is the selected stop mode (see parameter
21.3
Stop mode ).
Post magnetization b1
Reserved b2…15
1 = 1 0000h…FFFFh
5.00 rpm / real32 Defines the DC hold speed. See parameter 21.8 DC
current control , and section DC hold (page 106) .
DC hold speed 21.9
- / - DC hold speed. For scaling, see parameter 46.1 . 0.00 ... 1000.00 rpm
30.0 % / real32 Defines the DC hold current in percent of the motor
nominal current. See parameter
21.8 DC current control ,
and section DC magnetization (page 106) .
DC current reference 21.10
1 = 1 % / 10 = 1 % DC hold current. 0.0 ... 100.0 %
0 s / uint32 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 control .
Post magnetization
time 21.11
1 = 1 s / 1 = 1 s Post-magnetization time. 0...3000 s
Parameters 295