Toshiba H7 - Page 166

H7 ASD Operation Manual 159
Abnormal Speed Detection Filter Time
Program ⇒ Protection Parameters ⇒ Abnormal Speed Settings
This parameter sets the time that an overspeed condition must exist to cause a
trip.
Direct Access Number — F622
Parameter Type — Numerical
Factory Default — 10.0
Changeable During Run — No
Minimum — 0.01
Maximum — 100.0
Units — Seconds
Overspeed Detection Frequency Range
Program ⇒ Protection Parameters ⇒ Abnormal Speed Settings
This parameter sets the upper level of the Base Frequency range that, once
exceeded, will cause an Overspeed Detected alert.
Direct Access Number — F623
Parameter Type — Numerical
Factory Default — 0.0
Changeable During Run — Ye s
Minimum — 0.0
Maximum — 30.0
Units — Hz
Speed Drop Detection Frequency Range
Program ⇒ Protection Parameters ⇒ Abnormal Speed Settings
This parameter sets the lower level of the Base Frequency range that, once
exceeded, will cause a Speed Drop Detected alert.
Direct Access Number — F624
Parameter Type — Numerical
Factory Default — 0.00
Changeable During Run — Ye s
Minimum — 0.00
Maximum — 30.00
Units — Hz
Overvoltage Stall Level (fast)
Program ⇒ Protection Parameters ⇒ 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 250 µS, an Overvoltage Trip will
be incurred.
Note: This feature may increase deceleration times.
Direct Access Number — F625
Parameter Type — Numerical
Factory Default — (drive dependent)
Changeable During Run — Ye s
Minimum — 50.00
Maximum — 250.0
Units — %
F622 F625
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