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No.
Name/Value
0 ... 30000 ms
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%
Description
With zero speed delay:
The drive receives a stop command and decelerates along a
ramp. When actual motor speed falls below the value of
parameter
21.06 Zero speed
function activates. During the delay the function keeps the
speed controller live: the inverter modulates, motor is
magnetized and the drive is ready for a quick restart. Zero
speed delay can be used e.g. with the jogging function.
Speed
Delay
Zero speed delay.
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 43).
• 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
current
control, and section
DC hold speed.
Defines the DC hold current in percent of the motor nominal
current. See parameter
section
DC magnetization
DC hold current.
limit, the zero speed delay
Speed controller remains
active. Motor is decelerated to
true zero speed.
Time
(page 103).
(page 104).
Post-magnetization
21.08 DC
DC hold
(page 104).
21.08 DC current
control, and
(page 103).
Parameters 245
Def/FbEq16
1 = 1 ms
0000b
(page 104).
1 = 1
5.00 rpm
See par.
46.01
30.0%
1 = 1%
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