HX7+ ASD Installation and Operation Manual
173
Over-Voltage Stall Level
Program
Protection
Stall
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 over 4 mS, an
Over-Voltage Trip
will
be incurred.
Note:
This feature may increase deceleration times.
Direct Access Number — F626
Parameter Type —
Numerical
Factory Default — (ASD dependent)
Changeable During Run —
Yes
Minimum — 50.0
Maximum — 250.0
Units — %
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
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 active.
Settings:
0 — Disabled
1 — Enabled (box checked)
Direct Access Number — F627
Parameter Type —
Check Box
Factory Default —
Disabled
Changeable During Run —
No
Undervoltage Detection Time
Program
Protection
Undervoltage/Ridethrough
This parameter sets the time that the undervoltage condition must exist to cause
an
Undervoltage
trip when this function is enabled at
Direct Access Number — F628
Parameter Type —
Numerical
Factory Default —
0.03
Changeable During Run —
No
Minimum — 0.00
Maximum — 10.00
Units — Seconds
Undervoltage Stall level
Program
Protection
Undervoltage/Ridethrough
This parameter sets the low end of the DC bus voltage threshold that, once it
drops below this setting, will activate the setting of
Ridethrough Mode
).
Activation may be the result of a momentary power loss or an excessive load on
the bus voltage. Once activated, the system will attempt to maintain the bus
voltage level set here until the motor stops.
Note:
This feature may decrease deceleration times.
Direct Access Number — F629
Parameter Type —
Numerical
Factory Default — (ASD dependent)
Changeable During Run —
Yes
Minimum — 50.00
Maximum — 100.0
Units — %
Содержание HX7+ ASD
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