Hitachi WJ200 Series

3−78
DC Bus AVR (Automatic Voltage Regulation) for Deceleration Settings
This function is to achieve stable DC
bus voltage in case of deceleration. DC
bus voltage rises due to regeneration
during deceleration. When this
function is activated (B130=01 or 02),
inverter controls the deceleration time
so that the DC bus voltage not to go up
to the overvoltage trip level, and leads
to the trip-less operation during
deceleration.
Please note that the actual
deceleration time can be longer in this
case.
“b” Function
Run
Mode
Edit
Defaults
Func.
Code
Name Description Lnitial data Units
B130
Deceleration overvoltage
suppression enable
00…Disabled
01…Enabled
02…Enabled with accel.
U
00
−
B131
Decel. overvolt. suppress
level
DC bus voltage of suppression.
Range is:
200V class…330 to 395
400V class…660 to 790
U
380
/760
V
b132
Decel. overvolt. suppress
const.
Accel. rate when b130=02.
Set range: 0.10 ~ 30.00 sec.
U
1.00 sec
B133
Decel. overvolt. suppress
proportional gain
Proportional gain when b130=01.
Range is: 0.00 to 5.00

0.20
−
B134
Decel. overvolt. suppress
integral time
Integration time when b130=01.
Range is: 0.00 to 150.0

1.0 sec
Threshold voltage to start DC bus AVR (B131)
DC bus AVR
t
t
DC bus voltage
Freq
Normal
operation