Hitachi NEXT Series Instruction Manual page 41

■ Details of instantaneous power interruption (IPI) detection
This air compressor detects three types of power failure, brief IPI: less than one seconds, IPI: 1 to 5 seconds and power
interruption: more than 5 seconds.
Vtype detects the IPI by both PC board and DCBL controller. Therefore this is possible to detect the power failure
2 times at once.
No. Item
Brief instantaneous power
1 interruption approx. 1
second or less
Instantaneous power
2 interruption approx. 1 to 5
seconds
3 Power failure
(Note 1) Vtype records both 03 and 04.
(Note 2) Fixed speed type does not record the history.
(Note 3) Vtype records 2 times of 04 by PC board and DCBL controller. In addition, if IPI occurs and recovers before DC
power de-energizes, 09 (lack voltage) is indicated in E6 area (for DCBL controller) of digital monitor.
Air-Cooled
IMPORTANT
When IPI restart occurs frequently, the air compressor
shutdowns by fan motor overload with indication of
OVERLOAD SUB in LCD monitor and E0.53 in digital
monitor. Reset and restart the air compressor after 30
seconds or more.
History record
Code
Fixed speed type
04 (Note 3)
○
03 (Note 1)
○
04 (Note 2)
-
4. TROUBLESHOOTING [Protective Device]
Phenomenon
Vtype
Voltage drop
○
Voltage drop to
○
recorded with 04 0V,operation stop
Power interruption
for 5 second or
○
more
Action
Stop the operation and
restart
Restart after power
recovers.
Stop the operation and
restart
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