F252 | F256 | |
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DC Injection Braking Time | Direct Access Number — F252 | |
Program ⇒ Protection ⇒ DC Braking | Parameter Type — Numerical | |
This parameter setting is used to set the | Factory Default — 1.0 | |
Changeable During Run — Yes | ||
Braking. | ||
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| Minimum — 0.0 | |
| Maximum — 20.0 | |
| Units — Seconds |
Forward/Reverse DC Injection Braking Priority
Program ⇒ Protection ⇒ DC Braking
This parameter setting 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
Motor Shaft Fixing Control
Program ⇒ Protection ⇒ DC Braking
This parameter Enables/Disables a continuous DC injection at half of the amperage setting of F251 into a stopped 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 and 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
Settings:
0 — Disabled
1 — Enabled
Direct Access Number — F254
Parameter Type — Selection List
Factory Default — Disabled
Changeable During Run — Yes
0 Hz Command Output | Direct Access Number — F255 | |
Program ⇒ Special ⇒ Special Parameters | Parameter Type — Selection List | |
This parameter is used to set the | Factory Default — Standard (DC | |
Injection Braking) | ||
the event that the ASD is commanded to go to zero Hz. | Changeable During Run — No | |
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Settings: |
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0 — Standard (DC Injection Braking) |
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1 — 0 Hz Command |
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Time Limit For | Direct Access Number — F256 | |
Program ⇒ Fundamental ⇒ Frequency Settings | Parameter Type — Numerical | |
This parameter sets the time that the ASD is allowed to operate below the | Factory Default — 0.0 | |
Changeable During Run — Yes | ||
Lower Limit setting before an alarm and subsequent fault is incurred. | ||
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| Minimum — 0.0 | |
| Maximum — 600.0 | |
| Units — Seconds |
H9 ASD Installation and Operation Manual | 125 |
