Fuji Electric FRENIC-HVAC User Manual page 477

H77 Service Life of DC Link Bus Capacitor (Remaining time)
H77 displays the remaining time before the service life of DC link bus capacitor expires in
units of ten hours.
At the time of a printed circuit board replacement, transfer the service life data of the DC link
bus capacitor to the new board.
- Data setting range: 0 to 4380 (in units of ten hours, 0 to 43,800 hours)
H78 Maintenance Interval (M1)
H94 Cumulative Motor Run Time 1
H78 specifies the maintenance interval in units of ten hours.
The maximum setting is 9999 × 10 hours.
- Data setting range: OFF (Disable)
 Maintenance timer -- MNT (E20 to E24 and E27, data = 84)
When the cumulative motor run time 1 (H94) reaches the setting specified by H78, the
inverter outputs the maintenance timer signal MNT (if assigned to any digital terminal with
any of E20 to E24 and E27) to remind the user of the need of the maintenance of the
machinery.
 Cumulative motor run time 1 (H94)
Operating the keypad can display the cumulative run time of the 1st motor. This feature is
useful for management and maintenance of the machinery. Using H94 can modify the
cumulative run time to the desired value to be used as an arbitrary initial data on which the
replacement timing of machine parts or inverter is based. Specifying "blank" clears the
cumulative run time of the motor.
<Biannual maintenance>
If the maintenance interval counter reaches the specified value, set a new value for
the next maintenance in H78 and press the
restart counting. This function is exclusively applied to the 1st motor.
1 to 9999 (99990 hours, in units of ten hours)
6-167
6.3 Details of Function Codes
key to reset the output signal and