Direct Access Parameter Information
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139
Over-Voltage Limit Operation (Stall)
Program
Protection
Stall
This parameter enables the Over-Voltage Limit function. This fea
-
ture, in conjunction with the setting of
, is used to set the
upper DC bus voltage threshold 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 threshold level setting of parameter
is
exceeded for over 4 mS, an Over-Voltage Trip will be incurred.
The effects of this parameter may be further enhanced by the
setting of
.
Note: This parameter setting may increase deceleration times.
Note: Over-voltage alarms will display OP to convey Over
Potential.
Settings:
0 — On (OP Stall)
1 — Off
2 — On (Quick Deceleration)
3 — On (Dynamic Quick Deceleration — NOT USED)
Direct Access Number —
F305
Parameter Type —
Selection List
Factory Default —
ON (Quick
Deceleration)
Changeable During Run —
No
Supply Voltage Correction
Program
Protection
Base Frequency Voltage
This parameter Enables/Disables the Voltage Compensation
function.
When Enabled, this function provides a constant V/f ratio during
periods of input voltage fluctuations.
Settings:
0 — Disabled (Output Voltage Unlimited)
1 — Enabled (Supply Voltage Compensation)
2 — Disabled (Output Voltage Limited)
3 — Enabled (Supply Voltage Compensation w/Output Voltage
Limited)
Direct Access Number —
F307
Parameter Type —
Selection List
Factory Default —
(ASD-Depen
-
dent)
Changeable During Run —
No
Dynamic Braking Resistance (not used)
Program
Protection
Dynamic Braking
This parameter is used to input the resistive value of the Dynamic
Braking Resistor being used.
Light-duty and heavy-duty resistors vary from a few ohms to sev
-
eral hundred ohms. The appropriate resistance size will be type
-
form- and application-specific.
Note: Using a resistor value that is too low may result in system
damage.
Direct Access Number —
F308
Parameter Type —
Numerical
Factory Default —
(ASD-Depen
-
dent)
Changeable During Run —
No
Minimum — 0.5
Maximum — 1000.0
Units —
Содержание DN-68249-003
Страница 1: ...ADJUSTABLE SPEED DRIVES Q9 DN 68249 003 INSTALLATION OPERATION MANUAL April 2020 ...
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Страница 3: ...Document Number 68249 003 April 2020 Q9 Plus ASD Installation Operation Manual ...
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Страница 12: ...Table of Contents Q9 Plus ASD Install Op Manual iv https www toshiba com tic ...
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