5.4 Details of Function Codes
5-196
6) Turn on the inverter again.
Confirm that function code H42 (capacitance of main circuit capacitor) and H47 (initial capacitance of
main circuit capacitor) hold right values. Shift to Menu #5 of the program mode "Maintenance
Information" and confirm that the electrostatic capacitance ratio (%) of the main circuit capacitor is 100%.
If the measurement has failed, "0001" is set to both function codes H42 (capacitance of main
circuit capacitor) and H47 (initial capacitance of main circuit capacitor). Remove the factor o
the failure and conduct the measurement again.
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Hereafter, each time the inverter is turned off, it automatically measures the discharging time of the main
circuit capacitor if the above conditions are met. Periodically shift to the program mode menu #5
"Maintenance Information" and check the electrostatic capacitance ratio (%) of the main circuit capacitor.
The condition given above tends to produce a rather large measurement error. When the service
life is predicted in this mode, the main circuit capacitor service life judgment criteria is returned to
the factory default, measure again according to the conditions for shipping from the factory.
Cumulative Run Time of Electrolytic Capacitors on Printed Circuit Boards (H48)
Table 5.4-130
Function
Code
Name Contents
H48
Cumulative Run Time of
Capacitors
on Printed Circuit Boards
Displays the cumulative run time of capacitor on the
printed circuit board in units of ten hours.
- Data setting range: 0 to 9999 (0 to 99990 hours)
When replacing capacitors on printed circuit boards, clearing or modifying H48 data is required. For details,
see the maintenance related documents.
Cumulative Run Time of Cooling Fan (H43)
Table 5.4-131
Function
Code
Name Contents
H43
Cumulative run time of
cooling fan
Displays the cumulative run time of cooling fan in
units of ten hours.
- Data setting range: 0 to 9999 (0 to 99990 hours)
When replacing the cooling fan, clearing or modifying H43 data is required. For details, see the maintenance
related documents.
H44
Startup Counter for Motor 1
H44 counts the number of inverter startups and displays it in hexadecimal format. Check the start-up count
on the maintenance screen of the keypad and use the number as a guide for maintenance timing for parts
such as belts. To start the counting over again, e.g. after a belt replacement, set "0000."
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