5.4 Details of Function Codes
5-195
Details of
Function Codes
F codes
E codes
C codes
P codes
H42 to H48
A codes
b codes
r codes
J codes
d codes
U codes
y codes
Chapter 5 Function Code
- Keep the surrounding temperature at 25°C±10°C.
2) Turn on the main circuit power.
3) Confirm that the cooling fan is rotating and the inverter is in stopped state.
4) Turn off the main circuit power.
5) The inverter automatically starts the measurement of the capacitance of the main circuit capacitor. Make
sure that "…." appears on the LED monitor.
If "…." does not appear on the LED monitor, the measurement has not started. Check the
conditions listed in 1).
6) After the LED monitor indication turns off, the power is turned on again.
7) Move to the program mode menu No. 5 "Maintenance information" and check the electrostatic
capacitance ratio (%) of the main circuit capacitor.
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[2] Measuring method of the capacitance of the main circuit capacitor at the power shut-down under standard
operating status
When bit 3 of H98 data is 1, the inverter automatically measures the capacitance of the main circuit capacitor
under ordinary operating conditions when the power is turned off. To execute this measurement, it is
necessary to measure the reference capacitance of the capacitor in the following setting procedure.
Table 5.4-129
Function
Code
Name Contents
H42
Capacitance of main
circuit capacitor
- Measured value when the capacitance of the main
circuit capacitor is measured
- Start of initial value measurement mode under
standard operation (0000)
- Measurement failure (0001)
H47
Initial value of main circuit
capacitor
- Initial value of main circuit capacitor
- Start of initial value measurement mode under
standard operation (0000)
- Measurement failure (0001)
When replacing parts, clear or modify the H42 and H47 data. For details, see the maintenance related
documents.
----------------------------------------- Reference capacitance setup procedure -----------------------------------------
1) Change the function code H98 (Criteria for end of service life of main circuit capacitor) to the user
measurement standard (bit 3 = 1).
2) Turn the inverter to the stop state.
3) Make the inverter to the power shut-off status under the standard operation status.
4) Set both function codes H42 (measurement value of the main circuit capacitor) and H47 (initial value of
the main circuit capacitor) to "0000."
5) Turn off the inverter power supply (the following operations are automatically executed when the power
is turned off).
The inverter measures the discharging time of the main circuit capacitor and saves the result in function
code H47 (initial capacitance of main circuit capacitor).
The conditions under which the measurement has been conducted will be automatically collected and
saved.
During the measurement, "…." will appear on the LED monitor.
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