Toshiba Q9+ Installation & Operation Manual page 201

Over-Voltage Limit Operation Level
Program Protection Stall
This parameter sets the upper limit of the DC bus voltage thresh-
old that, once exceeded, will cause an Over-Voltage Stall.
While running or during deceleration, the Over-Voltage Stall func-
tion increases the output frequency of the ASD for a specified
time in an attempt to prevent an Over-Voltage Trip.
If the Over-Voltage Stall 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.
Under-Voltage Trip
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-volt-
age condition persists for a time greater than the
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
Under-Voltage (Trip Alarm) Detection Time
Program Protection Under-Voltage/Ridethrough
This parameter sets the time that the under-voltage condition
must exist to cause an Under-Voltage Trip.
This parameter is enabled at F627.
https://www.toshiba.com/tic/
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F626
Direct Access Parameter Information
Q9 Plus ASD Install/Op Manual
F628
F629
Direct Access Number —
Parameter Type — Numerical
Factory Default — (ASD-Depen-
dent)
Changeable During Run — No
Minimum — 100
Maximum — 150
Units — %
Direct Access Number —
Parameter Type — Selection List
Factory Default — Disabled
Changeable During Run — No
setting.
Direct Access Number —
Parameter Type — Numerical
Factory Default — 0.03
Changeable During Run — No
Minimum — 0.01
Maximum — 10.00
Units — Seconds
F626
F627
F628
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