Toshiba Q9 Installation And Operation Manual page 145

F626
Over-Voltage Stall Level
Program  Protection
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 more than 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
This parameter Enables/Disables the Under-Voltage Trip function.
With this parameter Enabled, the ASD will trip in the event of an under-voltage
condition.
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
ASD Overload
No Path — Direct Access Only
This parameter is used to protect the ASD from an over-current condition. The
standard overload rating of the Q9 ASD is 110% operation for 60 seconds.
This setting allows for the overload protection to be switched from the standard
overload detection means (Thermal Detection and Overload) to thermal detection
only.
Settings:
0 — Thermal Detection + Overload
1 — Thermal Detection Only
The Thermal Detection Only selection is used when multiple devices are
installed horizontally as described on
V/I Input-Loss Detection Level
Program  Special Controls
This parameter is enabled by providing a non-zero value here. This function
monitors the V/I input signal and if the V/I input signal falls below the level
specified here and remains there for a period of 0.3 seconds or more a trip will be
incurred (E-18).
This value is entered as 0% to 100% of the V/I input signal range.
Q9 ASD Installation and Operation Manual
pg. 13.
Direct Access Number — F626
Parameter Type — Numerical
Factory Default — (ASD-Dependent)
Changeable During Run — Yes
Minimum — 100
Maximum — 150
Units — %
Direct Access Number — F627
Parameter Type — Selection List
Factory Default — Disabled
Changeable During Run — No
Direct Access Number — F631
Parameter Type — Selection List
Factory Default — Thermal Detection +
Overload
Changeable During Run — No
Direct Access Number — F633
Parameter Type — Numerical
Factory Default — 0 (Disabled)
Changeable During Run — No
Minimum — 1
Maximum — 100
Units — %
F633
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