Hitachi X200 Series - Manual (Page 120)

DC Bus AVR for deceleration Settings
This function is to achieve stable DC bus voltage in case of deceleration. DC bus voltage
raises due to regeneration during deceleration. When this function is activated
(B133=01), inverter controls the deceleration time so that the DC bus voltage not to go
up to the overvoltage trip level, and leads to the tripless operation during deceleration.
Please note that the actual deceleration time may be longer in this case.
“B” Function Defaults
Func.
Code
Name /
SRW Display
Description
Run
Mode
Edit
-FE
(EU)
-FU
(USA) Units
DC bus AVR for decel.
P-gain
B055
VpnP 0000.2s
Proportional gain adjustment for
DC bus AVR function. Range is:
0.2 to 5.0
U 0.2 0.2 −
DC bus AVR for decel.
I-time
B056
VpnI 0000.2s
Integration time adjustment for
DC bus AVR function. Range is:
0.0 to 150.0
U 0.2 0.2 sec
DC bus AVR for decel.
D-time
B057
VpnD 0000.2s
Derivative time adjustment for
DC bus AVR function. Range is:
0.0 to 100.0
U 0.0 0.0 sec
DC bus AVR selection B133
Vpn AVR OFF
00 …Disabled
01 …Enabled
U 00 00 −
Threshold voltage of DC bus
AVR setting
B134
Vpn LVL 00380V
Setting of threshold voltage of
DC bus voltage to start DC bus
AVR function. Range is:
200V class
…330 to 395
400V class …660 to 790
U 380
/760
380
/760
V
Threshold voltage to start DC bus AVR (B134)
DC bus AVR
t
t
DC bus voltage
Freq
Normal
operation
Confi
guri
ng Driv
e
Parameters
3−46