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Mitsubishi FR-D720-5.5K - Page 103

Mitsubishi FR-D720-5.5K
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94
Parameter list
Regeneration avoidance function
882
Regeneration
avoidance
operation
selection
10
0 Regeneration avoidance function invalid

1
Regeneration avoidance function is always
valid
2
Regeneration avoidance function is valid
only during a constant speed operation
883
Regeneration
avoidance
operation level
0.1V
400VDC/
780VDC
∗1
300 to
800V
Bus voltage level at which regeneration
avoidance operates.
When the bus voltage level is set to low,
overvoltage error will be less apt to occur.
However, the actual deceleration time
increases.
The set value must be higher than the
"power supply voltage
×
" ∗2.
∗1 The initial value differs according to the
voltage class. (100V, 200V class/400V class)
∗2 For Single-phase 100V power input model,
power input voltage
×
2
×

885
Regeneration
avoidance
compensation
frequency limit
value
0.01Hz 6Hz
0 to 10Hz
Limit value of frequency which rises at
activation of regeneration avoidance
function.

9999 Frequency limit invalid
886
Regeneration
avoidance voltage
gain
0.1% 100% 0 to 200%
Responsiveness at activation of
regeneration avoidance.
A larger setting of Pr. 886 will improve
responsiveness to the bus voltage change.
However, the output frequency could
become unstable.
When vibration is not suppressed by
decreasing the Pr. 886 setting, set a
smaller value in Pr. 665.

665
Regeneration
avoidance
frequency gain
0.1% 100% 0 to 200% 
Free parameter
888
Free parameter 1
1 9999 0 to 9999
Parameters for your own purposes.
Used for maintenance, management, etc.
by setting a unique number to each
inverter when multiple inverters are used.
Data is held even if the inverter power is
turned OFF.
××
889
Free parameter 2
1 9999 0 to 9999 ××
——
891
Refer to Pr.52.
Adjustment of
terminal FM output
(calibration)
C0
(900)
FM terminal
calibration
——
Calibrates the scale of the meter
connected to terminal FM.
×
——
C2(902)
to
C7(905)
C22(922)
to
C25(923)
Refer to Pr. 125 and Pr. 126.
Buzzer control
of the operation
panel
990
PU buzzer control
11
0 Without buzzer

1 With buzzer
The parameter number in parentheses is the one for use with the parameter unit (FR-PU04/FR-PU07).
Function
Parameter
Name
Incre-
ments
Initial
Value
Range Description
Parameter
Copy
Parameter
Clear
All Parameter
Clear
Related
Parameter
2
2

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