Toshiba WX9 ASD Installation & Operation Manual page 127

F252
DC Injection Braking Time
Program Protection DC Braking
This parameter is used to set the on-time duration of the DC Injection
Braking.
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
Motor Shaft Fixing Control
Program Protection DC Braking
This parameter Enables/Disables a continuous DC injection at half of the
amperage setting of DC Injection Braking Current
motor. This feature is useful in preheating the motor or to keep the rotor from
spinning freely.
Motor Shaft Stationary Control starts after the DC injection brake stops the
motor. It continues until ST – CC is opened, power is turned off, an
Emergency Off command is received, or this parameter is changed.
Enabling this feature will also require a non-zero entry at DC Injection
Braking Start Frequency (F250).
Settings:
0 — Disabled
1 — Enabled
Select Function for 0Hz Command Stop
Program Special Special Parameters
This parameter selects the go-to-zero method to be used by the ASD when the
ASD is commanded to go to 0.0 Hz.
Settings:
0 — Standard (DC Injection Braking)
1 — 0 Hz Command
WX9 ASD Installation and Operation Manual
(F251) into a stopped
Direct Access Number — F252
Parameter Type — Numerical
Factory Default — 1.00
Changeable During Run — Yes
Minimum — 0.00
Maximum — 10.00
Units — Seconds
Direct Access Number — F253
Parameter Type — Selection List
Factory Default — Disabled
Changeable During Run — Yes
Direct Access Number — F254
Parameter Type — Selection List
Factory Default — Disabled
Changeable During Run — Yes
Direct Access Number — F255
Parameter Type — Selection List
Factory Default — Standard (DC
Injection Braking)
Changeable During Run — No
F255
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