Hitachi SJ Series, User Manual

Page: 479 / 786

13-16
Chapter 13 Monitor Functions
13.12 Checking the Result of Life
Diagnosis
13.12.1 Checking the life monitor
• Want to check the life of Inverter.
• Want to know the timing to be maintained.
• The life diagnostic monitor monitors the status of
following two items.
1: The lives of capacitors on the main circuit
board
2: Reduced rotation speed of the cooling fan.
• As for signals, a capacitor life prewarning signal
(029 [WAC]) and a fan life advance notice signal
(030 [WAF]) can be output.

Parameter
• For operation of cooling fan, see “12.18 Controlling
the Cooling Fan of the
Inverter”.
• The lives of capacitors are calculated once a ten
minutes. If the power supply is repeatedly turned
ON and OFF faster than this cycle, the inverter will
be incapable of diagnosing the lives of capacitors
normally.
• If the selection of the cooling fan operation is set to
other than 00, the fan will stop automatically
depending on the condition. The life diagnosis isn’t
carried out while the fan is in the automatic stop
mode.
Item Parameter Data Description
Life diagnostic
monitor
[dC-16] LL~HH
The monitors shows H at the end of the life
spans.
The monitor on the right indicates the lives of
the capacitors on the circuit board, whereas
that on the left indicates the life of the cooling
fan.
Capacitor life advance
notice
[CC-01]~[CC-07] 029
[WAC]: This signal is output when the lives of
the capacitors on the circuit board are neared.
Fan life advance
notice
[CC-01]~[CC-07] 030
[WAF]: This signal is output when the cooling
fan rotation speed is decreased.
Selection of the
cooling fan operation
[bA-70]
00
Always ON
01
The fan is turned ON during operation and
continues rotating after the operation is
stopped.
02
Running depending on the temperature. The
fan runs as the fin temperature rises.
Q
A
A
!