Learning Advanced Features
194
Group
Code
Name
LCD
Display
Parameter Setting
Setting
Range
Unit
77
Press
regener
ation
prevent
ion P
gain
RegenA
vd
Pgain
50.0(%)
0 .0–
100.0%
%
78
Press
regener
ation
prevent
ion I
gain
RegenA
vd Igain
500(ms)
20–
30000m
s
ms
Press Regeneration Prevention
Setting Details
Code
Description
Ad.74 RegenAvd Sel
Frequent regeneration voltage from a press type load during constant
speed motor operation may force excessive activation of the dynamic
brake unit which may damage or shorten the brake life. To prevent this
situation, select Ad.74 (RegenAvd Sel) to control DC link voltage and disable
the brake unit operation.
Ad.75 RegenAvd Level
Set brake operation prevention level voltage when the DC link voltage goes
up due to regeneration.
Ad.76 CompFreq Limit
Set the frequency limit of the inverter output when in regeneration
prevention.
Ad.77 RegenAvd Pgain,
Ad.78 RegenAvd Igain
Set the P gain and I gain in the DC link voltage supress PI controller. These
will control how fast the inverter responds to the increased DC link voltage.
(Vdc)
(Hz)
Ad.75
Ad.76
DC voltage
Output frequency
Cmd freq.
Regeneration prevention level
Regeneration prevention On
Compensation freq. limit
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