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Parameters 173
21.08
DC current control
Activates/deactivates the DC hold and post-magnetization
functions. See section
DC magnetization
on page
77
.
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.
0b0000
0b0000…0b1111
DC magnetization selection.
1 = 1
21.09
DC hold speed
Defines the DC hold speed in speed control mode. See
parameter
21.08
DC current control
, and section
DC hold
on page
77
.
5.00 rpm
0.00…1000.00 rpm
DC hold speed.
See par.
46.01
21.10
DC current reference
Defines the DC hold current in percent of the motor
nominal current. See parameter
21.08
DC current control
,
and section
DC magnetization
on page
77
.
After 100 s post-magnetization time, the maximum
magnetization current is limited to the magnetization
current corresponding to the actual flux reference.
30.0%
0.0…100.0%
DC hold current.
1 = 1%
21.11
Post magnetization
time
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
21.08
DC current control
0 s
0…3000 s
Post-magnetization time.
1 = 1 s
21.13
Autophasing mode
Selects the way autophasing is performed.
See section Autophasing on page 59.
Turning
Turning
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. The load
torque must be less than 5%.
0
No.
Name/Value
Description
Default
FbEq 16
Bit
Value
0
1 = DC hold. See section
DC hold
on page
77
.
Note:
The DC hold function has no effect if the start signal is switched off.
1
1 = Post-magnetization. See section
Post-magnetization
on page
78
.
Note:
Post-magnetization is only available when ramping is the selected stop mode (see
parameter
21.03
Stop mode
).
2…15
Reserved
ACS380 FW.book Page 173 Friday, May 4, 2018 4:18 PM
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