Direct Access Parameter Information
W7B ASD Installation & Operation Manual
https://www.toshiba.com/tic/
99
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 3-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 in
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
. 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
.
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 — %
DC Injection Braking Time
Program
Protection
DC Braking
This parameter is used to set the on-time duration of the DC Injection
Braking.
Direct Access Number —
F252
Parameter Type —
Numerical
Factory Default —
1.00
Changeable During Run —
Yes
Minimum — 0.00
Maximum — 10.00
Units — Seconds
Forward/Reverse DC Injection Braking Priority
Program
Protection
DC Braking
This parameter determines if DC Injection braking is to be used during a
change in the direction of the motor.
Settings:
0 — Disabled
1 — Enabled
Direct Access Number —
F253
Parameter Type —
Selection List
Factory Default —
Disabled
Changeable During Run —
Yes
Summary of Contents for W7 DN-57442-006
Page 1: ...ADJUSTABLE SPEED DRIVES W7 DN 57442 006 INSTALLATION OPERATION MANUAL June 2020 ...
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Page 3: ...Document Number 57442 006 Date June 2020 W7 ASD Installation and Operation Manual ...
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