HX7+ ASD Installation and Operation Manual
119
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 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
Motor Shaft Fixing Control
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 — Enabled (box checked)
1 — Disabled
Direct Access Number — F253
Parameter Type —
Check Box
Factory Default —
Disabled
Changeable During Run —
Yes
Summary of Contents for HX7+ ASD
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