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Mitsubishi Electric FR-F720P-0.75K Instruction Manual Page 119

Fr-f700p series.
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Parameter list
Parameter
Name
Operation setting at fault occurrence — Regenerative avoidance operation (Pr.665, Pr.882
to Pr.886)
Acceleration/deceleration time/pattern adjustment — Regenerative avoidance operation
(Pr.665, Pr.882 to Pr.886)
Regeneration
882
avoidance operation
selection
Regeneration
883
avoidance operation
level
Regeneration
avoidance at
884
deceleration detection
sensitivity
Regeneration
avoidance
885
compensation
frequency limit value
Regeneration
886
avoidance voltage
gain
Regeneration
avoidance frequency
665
gain
*1
The initial value differs according to the voltage level. (200V / 400V)
*2
Performing IPM parameter initialization changes the settings.
Useful functions — Free parameter (Pr.888, Pr.889)
888
Free parameter 1
889
Free parameter 2
112
Incre-
Initial
Range
ments
Value
0
1
1
0
2
DC380V
0.1V
300 to 800V
/760V
*1
1
0
0 to 5
0 to 30Hz
0.01Hz
6Hz
*2
9999
0.1%
100%
0 to 200%
0.1%
100%
0 to 200%
(Refer to page 43)
1
9999
0 to 9999
1
9999
0 to 9999
Description
Regeneration avoidance function invalid
Regeneration avoidance function is always
valid
Regeneration avoidance function is valid only
during a constant speed operation
Set the 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
Set sensitivity to detect the bus voltage
change.
1 (Low) → 5 (High)
Set the limit value of frequency which rises at
activation of regeneration avoidance function.
Frequency limit invalid
Adjust responsiveness at activation of
regeneration avoidance. Setting a larger value
in 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.
Parameters you can use for your own
purposes.
Used for maintenance, management, etc. by
setting a unique number to each inverter when
multiple inverters are used.
: enabled
× : disabled
×
×
×
×

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