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Soft Stall Selection |
Soft Stall Selection
Program Protection Settings | Soft Stall Selection |
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This parameter Enables/Disables the Soft Stall and Overload Trip functions. The Soft Stall function reduces the output frequency of the ASD when the current requirements of the motor exceed the Thermal Protection #1 setting; thus, reducing the output current.
If the current drops below the Thermal Protection #1 level setting within a specified time, the output of the ASD will accelerate to the programmed frequency setpoint.
If the current does not drop below the Thermal Protection #1 level setting within the specified time, a trip will be incurred if the Trip function is enabled at this parameter.
Soft Stall is highly effective in preventing motor overload trips when used on fans, blowers, pumps, and other centrifugal loads which require less torque at lower frequencies.
This parameter may be configured for a V/f motor or a standard motor.
Note: The Soft Stall setting may affect acceleration times and patterns.
Settings:
V/f Motor — (Soft) Stall Only
V/f Motor — Disable Trip/Disable Stall
V/f Motor — Enable Trip/Enable Stall
V/f Motor — Trip Only
Standard Motor — (Soft) Stall Only
Standard Motor — Disable Trip/Disable Stall
Standard Motor — Enable Trip/Enable Stall
Standard Motor — Trip Only
Parameter Type — Selection List
Factory Default — Trip Only
Changeable During Run — No
S-Pattern Lower Limit Adjustment
Program | ⇒ | Fundamental Parameters | Fundamental #1 | Parameter Type — Numerical | |
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Lower Limit Adjustment |
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| Factory Default — 25.00 | ||
Sets the time added to the lower portion of | Changeable During Run — Yes | ||||
(decreases the accel rate at the ramp start). |
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| Minimum — 0.00 |
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| Maximum — 50.00 |
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Program |
| Fundamental Parameters | Fundamental #1 | Parameter Type — Numerical | |
Upper Limit Adjustment |
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| Factory Default — 25.00 | ||
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Sets the time added to the upper portion of | Changeable During Run — Yes | ||||
(decreases the decel rate at the ramp end). |
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W7 ASD Installation⇒and Operation Manual ⇒⇒ |
| Minimum — 0.00 | |||
| Maximum — 50.00 | ||||
| Units — % | ||||
| 125 |