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WX9 ASD Installation and Operation Manual
End Frequency
Program
Special
Frequency Control
This parameter sets the lowest frequency that the drive will recognize during
deceleration before going to 0.0 Hz.
Direct Access Number — F243
Parameter Type —
Numerical
Factory Default —
0.0
Changeable During Run —
Yes
Minimum — 0.0
Maximum — Upper-Limit Freq. (
Units — Hz
Dead Band of 0Hz Frequency Setting Signal
Program
Special
Special Parameters
This parameter sets an output frequency threshold that, until the commanded
frequency surpasses this setting, the ASD will output 0.0 Hz to the motor.
Note:
This setting will override the
Start Frequency
this setting has a higher value.
Direct Access Number — F244
Parameter Type —
Numerical
Factory Default —
0.0
Changeable During Run —
Yes
Minimum — 0.0
Maximum — 5.0
Units — Hz
DC Injection Braking Start Frequency
Program
Protection
DC Braking
During deceleration, this is the frequency at which
DC Injection Braking
will
start.
DC Injection Braking
DC Injection Braking
is a braking system used with three-phase motors.
Unlike conventional brakes, there is no physical contact between the rotating
shaft and a stationary brake pad or drum. When braking is required, the drive
outputs a DC current that is applied to the windings of the motor to quickly
brake the motor. The braking current stops when the time entered at
DC
Injection Braking Time
times out.
The intensity of the DC current used while braking determines how fast the
motor will come to a stop and may be set at
DC Injection Braking Current
F251)
. The intensity setting is entered as a percentage of the full load current
of the ASD.
DC Injection Braking
is also used to preheat the motor or to keep the rotor
from spinning freely when the motor is off by providing a pulsating DC current
into the motor at the
Carrier Frequency
. This feature may be enabled at
Motor Shaft Fixing Control
(
F254)
.
Direct Access Number — F250
Parameter Type —
Numerical
Factory Default —
0.0
Changeable During Run —
Yes
Minimum — 0.0
Maximum — 120.0
Units — Hz
DC Injection Braking Current
Program
Protection
DC Braking
This parameter sets the percentage of the rated current of the drive that will be
used for
DC Injection Braking
. A larger load will require a higher setting.
Direct Access Number — F251
Parameter Type —
Numerical
Factory Default —
50.00
Changeable During Run —
Yes
Minimum — 0.00
Maximum — 100.0
Units — %
Summary of Contents for WX9 ASD
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