F622

F627

Abnormal Speed Detection Time

Program Protection Abnormal Speed Settings

This parameter sets the time that an overspeed condition must exist to cause a trip.

This parameter functions in conjunction with the settings of F623 and F624.

Direct Access Number — F622

Parameter Type — Numerical

Factory Default — 0.01

Changeable During Run — Yes

Minimum — 0.01

Maximum — 100.00

Units — Seconds

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 Overspeed 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 — 30.00

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 — 0.00 (Disabled)

Changeable During Run — Yes

Minimum — 0.00 (Disabled)

Maximum — 30.00

Units — Hz

Overvoltage Limit Operation Level

Program Protection Stall

This parameter sets the upper DC bus voltage threshold that, once exceeded, will cause an Overvoltage Stall. An Overvoltage Stall increases the output frequency of the drive during deceleration for a specified time in an attempt to prevent an Overvoltage Trip.

If the overvoltage condition persists for over 4 mS, an Overvoltage Trip will be incurred.

This parameter is enabled at F305.

Direct Access Number — F626

Parameter Type — Numerical

Factory Default — (ASD-dependent)

Changeable During Run — Yes

Minimum — 100

Maximum — 150

Units — %

Note: This parameter setting may increase deceleration times.

Undervoltage Trip

Program Protection Undervoltage/Ridethrough

This parameter Enables/Disables the Undervoltage Trip function.

With this parameter Enabled, the ASD will trip if the undervoltage 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

H9 ASD Installation and Operation Manual

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Image 195
Toshiba H9 operation manual F622 F627