Hitachi WJ Series

Chapter 10 Monitor Functions
10-3-3
10.3.3 Monitor the Results of Lifetime Diagnosis
 How to check the life of the inverter?
 How to know the maintenance timing?
Life assessment monitor [d022]
 Displays the status of the end-of-life components by the position where 7 segment LED on the
keypad are lit.
 Life assessment monitor shows the status of following two items.
 1: Life of electrolytic capacitors on board (excluding main circuit smoothing capacitor).
 2: Life of cooling fan
 Life diagnosis can be output as output signals by "Capacitor life warning [WAC] (039)" and
"Cooling-fan life warning [WAF] (040)" of the output terminal function. For details, see "9.11.7
Outputting a Warning for Capacitor Life on the Control Board" and "9.11.8 Outputting a Warning
for Cooling Fan Life".
 The life of the electrolytic capacitors on the board is calculated once per 10 minutes. If the
power supply is repeatedly turned ON/OFF shorter than this cycle, the life cannot be diagnosed
normally.
 Models of single-phase 200 V class 0.75 kW or less, three-phase 200 V class 0.75 kW or less,
and three-phase 400 V class 0.4 kW or less are not equipped with a cooling fan, so the cooling
fan life diagnosis function does not work.
Code
Item
Description
Data
[d022]
Life assessment
monitor
Displays the status of the end-of-life components.
1: Electrolytic capacitors on board
2: Cooling fan
―
Life warning
Normal
1
2
Q
A
!