180
Q9 Plus ASD Installation and Operation Manual
Over-Voltage Limit Operation Level
Program
Protection
Stall
This parameter sets the upper limit of the DC bus voltage threshold that, once
exceeded, will cause an
Over-Voltage Stall
.
While running or during deceleration, the
Over-Voltage Stall
function
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.
Direct Access Number — F626
Parameter Type —
Numerical
Factory Default —
(ASD-Dependent)
Changeable During Run —
No
Minimum — 100
Maximum — 150
Units — %
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-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
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
.
Direct Access Number — F628
Parameter Type —
Numerical
Factory Default —
0.03
Changeable During Run —
No
Minimum — 0.01
Maximum — 10.00
Units — Seconds
Regenerative Power Ridethrough Control Level
Program
Protection
Under-Voltage/Ridethrough
This parameter is activated during regeneration. It is used to set the low end of
the DC bus voltage threshold that, once the bus voltage drops below this
setting, activates the setting of
F302
(Ridethrough Mode).
Activation may be the result of a momentary power loss or an excessive load on
the bus voltage.
During a
Ridethrough
, regenerative energy is used to maintain the control
circuitry settings for the duration of the
Ridethrough
; it is not used to drive the
motor.
The motor(s) of the system are stopped and then restarted automatically or may
continue seamlessly if so configured.
See
F302
for additional information on this parameter.
Note:
This parameter setting may increase deceleration times.
Direct Access Number — F629
Parameter Type —
Numerical
Factory Default —
(ASD-Dependent)
Changeable During Run —
No
Minimum — (ASD-Dependent)
Maximum — 100
Units — %
F626
F629
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