ABB ACS880 Firmware Manual page 155

No. Name/Value
21.08 DC current control
Bit Value
0 1 = Enable DC hold. See section
Notes:
• The DC hold function has no effect if the start signal is switched off.
• The DC hold function can only be activated in speed control mode.
• The DC hold function cannot be activated if parameter
to Scalar.
1 1 = Enable post-magnetization. See section
Note: Post-magnetization is only available when ramping is the selected stop mode (see
parameter
2...15 Reserved
0000h...FFFFh
21.09 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
21.13 Autophasing mode
Turning
Standstill 1
Standstill 2
Description
Activates/deactivates the DC hold and post-magnetization
functions. See section
Note: 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 hold
21.03 Stop mode).
DC magnetization selection.
Defines the DC hold speed. See parameter
control, and section DC hold
DC hold speed.
Defines the DC hold current in percent of the motor nominal
current. See parameter
DC magnetization (page 48).
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
See parameter 21.08 DC current
Post-magnetization time.
Selects the way autophasing is performed during the ID run.
See section Autophasing
This mode gives the most accurate autophasing result. This
mode can be used, and is recommended, if the motor is
allowed to rotate during the ID run and the start-up is not
time-critical.
Note: This mode will cause the motor to rotate during the ID
run.
Faster than the Turning
will not rotate.
An alternative standstill autophasing mode that can be used if
the Turning mode cannot be used, and the
gives erratic results. However, this mode is considerably
slower than Standstill 1.
DC magnetization (page 48).
(page 48).
99.04 Motor control mode
Post-magnetization
21.08 DC current
(page 48).
21.08 DC current control, and section
21.10 DC current reference.
control.
on page 45.
mode, but not as accurate. The motor
Standstill 1
Parameters 155
Def/FbEq16
00b
is set
(page 49).
1 = 1
5.00 rpm
See par.
46.01
30.0%
1 = 1%
0 s
1 = 1 s
Turning
0
1
2
mode