78
HX7+ ASD Installation and Operation Manual
Soft Stall
Program
Protection
Overload
This parameter
Enables/Disables
the
Soft Stall
function. When enabled, the
Soft Stall
function reduces the output frequency of the ASD when the current
requirements of the motor exceed the
Electronic Thermal Protection #1
setting (
); thus, reducing the output current.
If the current drops below the level setting within a specified time, the output of
the ASD will accelerate to the programmed frequency setpoint. If not, a trip
will be incurred.
The
Soft Stall
feature is available when the (Program
Protection
Overload
(check box) parameter is enabled only.
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.
Note:
The
Soft Stall
setting may affect acceleration times and patterns.
Settings:
0 — Disabled
1 — Enabled (check box to enable)
Direct Access Number — F017
Parameter Type —
Check Box
Factory Default —
Disabled
Changeable During Run —
No
Summary of Contents for HX7+ ASD
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Page 235: ...226 HX7 ASD Installation and Operation Manual Figure 43 66 163 kVA 18 Pulse Enclosure ...
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