GX9 ASD Installation and Operation Manual 189
Over-Speed Detection Frequency Upper Band
Program Protection Abnormal Speed Settings
This parameter sets the upper level of the Base Frequency range that, once
exceeded, will cause an Over-Speed Detected alert.
This parameter functions in conjunction with the settings of F622 and F624.
Direct Access Number — F623
Parameter Type — Numerical
Factory Default — 0.0 (Disabled)
Changeable During Run — Yes
Minimum — 0.0 (Disabled)
Maximum — 30.0
Units — Hz
Over-Speed Detection Frequency Lower Band
Program Protection Abnormal Speed Settings
This parameter sets the lower level of the Base Frequency range that, once the
output speed falls below this setting, will cause a Speed Drop Detected alert.
This parameter functions in conjunction with the settings of F622 and F623.
Direct Access Number — F624
Parameter Type — Numerical
Factory Default — 0.0 (Disabled)
Changeable During Run — Yes
Minimum — 0.0 (Disabled)
Maximum — 30.0
Units — Hz
Over-Voltage Limit Operation Level (fast)
Program Protection Stall
This parameter sets the upper DC bus voltage threshold that, once exceeded,
will cause an Over-Voltage Stall. An Over-Voltage Stall increases the output
frequency of the drive during deceleration for a specified time in an attempt to
prevent an Over-Voltage Trip.
If the over voltage condition persists for over 250 µS, an Over-Voltage Trip
will be incurred.
Note: This feature may increase deceleration times.
Direct Access Number — F625
Parameter Type — Numerical
Factory Default — (ASD-dependent)
Changeable During Run — Yes
Minimum — 50.00
Maximum — 250.0
Units — %
Over-Voltage Limit Operation Level
Program Protection Stall
This parameter sets the upper DC bus voltage threshold that, once exceeded,
will cause an Over-Voltage Stall. An Over-Voltage Stall increases the output
frequency of the ASD during deceleration for a specified time in an attempt to
prevent an Over-Voltage Trip.
If the over-voltage condition persists for over 4 mS, an Over-Voltage Trip will
be incurred.
This parameter is enabled at F305.
Note: This parameter setting may increase deceleration times.
Direct Access Number — F626
Parameter Type — Numerical
Factory Default — (ASD-Dependent)
Changeable During Run — Yes
Minimum — 50.00
Maximum — 250.00
Units — %
Under-Voltage Trip Selection
Program Protection Under-Voltage/Ridethrough
This parameter Enables/Disables the Under-Voltage Trip function.
With this parameter Enabled, the ASD will trip if the under-voltage condition
persists for a time greater than the F628 setting.
A user-selected contact may be actuated if so configured.
If Disabled the ASD will stop and not trip; the FL contact is not activated.
Settings:
0 — Disabled
1 — Enabled
Direct Access Number — F627
Parameter Type — Selection List
Factory Default — Disabled
Changeable During Run — No
F623 F627
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