ABB ACS880 Firmware Manual page 207

No. Name/Value
21.08 DC current control
Bit Value
0 1 = Enable DC hold. See section
Note: The DC hold function has no effect if the start signal is switched off.
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
0000b...0011b
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
21.12 Continuous
magnetization
command
Off
On
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Description
Activates/deactivates the DC hold and post-magnetization
functions. See section DC magnetization
Notes:
• These functions are only available in speed control in DTC
motor control mode (see page 22).
• 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 21.08 DC current
DC magnetization (page 63).
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
See parameter 21.08 DC current
Post-magnetization time.
Activates/deactivates (or selects a source that
activates/deactivates) continuous magnetization. See section
Continuous magnetization
The magnetization current is calculated on the basis of flux
reference (see parameter group
Notes:
• This function is only available when ramping is the selected
stop mode (see parameter
speed control in DTC motor control mode (see page 22).
• Continuous magnetization causes the motor to heat up. In
applications where long magnetization times are required,
externally ventilated motors should be used.
• Continuous magnetization may not be able to prevent the
motor shaft from rotating during a long period if a constant
load is applied to the motor.
0 = Normal operation
1 = Magnetization active
0.
1.
(page 63).
(page 63).
Post-magnetization (page 64).
21.08 DC current
(page 63).
control, and section
reference.
control.
(page 64).
97 Motor control).
21.03 Stop mode), and only in
Parameters 207
Def/FbEq16
0000b
1 = 1
5.00 rpm
See par.
46.01
30.0%
1 = 1%
0 s
1 = 1 s
Off
0
1