Fuji Electric FRENIC-HVAC User Manual page 468

5) Turn OFF the inverter, and the following operations are automatically performed.
The inverter measures the discharging time of the DC link bus capacitor and saves the
result in function code H47 (Initial capacitance of DC link bus capacitor).
The conditions under which the measurement has been conducted will be automatically
collected and saved.
During the measurement, "Capacitor capacitance measurement" is shown on the screen of
the keypad.
6) Turn ON the inverter again.
Confirm that H42 (Capacitance of DC link bus capacitor) and H47 (Initial capacitance of
DC link bus capacitor) hold right values. Select PRG > 3(INV Info) > 4(Maintenance) in
Programming mode and confirm that the relative capacitance (ratio to full capacitance) is
100%.
If the measurement has failed, "Failed" is entered into both H42 and H47.
Remove the factor of 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 DC link bus capacitor if the above conditions are met. Periodically check the
relative capacitance of the DC link bus capacitor (%) with PRG > 3(INV Info) >
4(Maintenance) in Programming mode.
The condition given above tends to produce a rather large measurement error. If
this mode gives you a lifetime alarm, set H98 (Protection/maintenance function)
back to the default setting (Bit 3 (Select life judgment threshold of DC link bus
capacitor) = 0) and conduct the measurement under the condition at the time of
factory shipment.
 Cumulative Run Time of Capacitors on Printed Circuit Boards (H48)
Function code
H48
When replacing capacitors on printed circuit boards, clearing or modifying H48 data is
required. For details, refer to the materials for maintenance.
 Cumulative Run Time of Cooling Fan (H43)
Function code
H43
When replacing the cooling fan, clearing or modifying H43 data is required. For details, refer
to the maintenance related documents.
H44 Startup Counter for Motor 1
H44 counts the number of inverter startups and displays it in decimal format. Check the
displayed number on the maintenance screen of the keypad, and use it as a guide for
maintenance timing for parts such as belts. To start the counting over again, e.g. after a belt
replacement, set the H44 data to "0000."
Name
Cumulative run time Displays the cumulative run time of capacitor on the
of capacitors on printed circuit board in units of ten hours.
printed circuit boards
• Data setting range: 0 to 9999
Name
Cumulative run time Displays the cumulative run time of cooling fan in units
of cooling fan of ten hours.
• Data setting range: 0 to 9999
6-158
Description
(0 to 99990 hours in increments of
10 hours)
Description
(0 to 99990 hours in increments of
10 hours)