Hitachi L2002 用户手册

“B” Group: Fine Tuning Functions

Configur

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Use parameter B004 to disable or enable the instantaneous power failure / undervoltage 
alarm. When the alarm is enabled, parameter settings B001 (Selection of Automatic 
Restart Mode) and B002 (Allowable Under-voltage Power Failure Time) are not valid. 

B001 Selection of automatic 

restart mode

Select inverter restart method, 
four option codes:
00... Alarm output after trip,
        no automatic restart
01... Restart at 0Hz
02... Resume operation after
        frequency matching
03... Resume previous freq. 
after freq. matching, then 
decelerate to stop and display 
trip info.

✘ ✔

00

00

—

IPS POWR     ALM

B002 Allowable under-

voltage power failure 
time

The amount of time a power 
input under-voltage can occur 
without tripping the power 
failure alarm. Range is 0.3 to 
25 sec. If under-voltage exists 
longer than this time, the 
inverter trips, even if the restart 
mode is selected.

✘ ✔

1.0

1.0

sec.

IPS Time 0001.0s

B003 Retry wait time before 

motor restart

Time delay after under-voltage 
condition goes away, before 
the inverter runs motor again.
Range is 0.3 to 100 seconds.

✘ ✔

1.0

1.0

sec.

IPS Wait 0001.0s

B004 Instantaneous power 

failure / under-voltage 
trip alarm enable

Two option codes:
00... Disable
01... Enable

✘ ✔

00

00

sec.

IPS TRIP    OFF

B005 Number of restarts on 

power failure / under-
voltage trip events

Two option codes:
00... Restart 16 times
01... Always restart

✘ ✔

00

00

sec.

IPS RETRY   16