Fuji Electric FRENIC-HVAC User Manual page 465

H42, H43 Capacitance of DC Link Bus Capacitor, Cumulative Run Time of Cooling Fan
H48 Cumulative Run Time of Capacitors on Printed Circuit Boards
 Life prediction function
The inverter has the life prediction function for some parts which measures the discharging
time or counts the voltage applied time, etc. The function allows you to monitor the current
lifetime state on the LCD monitor and judge whether those parts are approaching the end of
their service life.
The life prediction function can also issue early warning signals if the lifetime alarm
command LIFE is assigned to any of the digital output terminals by any of E20 through E24
and E27.
The predicted values should be used only as a guide since the actual service life is influenced
by the ambient temperature and other usage environments.
Object of life
prediction
DC link bus
capacitor
Electrolytic
capacitors on
printed circuit
boards
Cooling fans
H47 (Initial Capacitance of DC Link Bus Capacitor
Prediction function End-of-life criteria
Measurement of 85% or lower of the
discharging time initial capacitance at
shipment
Measures the
discharging time of the (See "[ 1 ] Measuring
DC link bus capacitor the capacitance of DC
when the main power link bus capacitor in
is shut down and comparison with initial
calculates the one at shipment" on
capacitance. the next page.)
85% or lower of the
reference capacitance
under ordinary
operating conditions at
the user site
(See "[ 2 ] Measuring
the capacitance of DC
link bus capacitor
under ordinary
operating conditions"
given later.)
ON-time counting Exceeding 43,500
hours (five years)
Counts the time
elapsed when the
For inverters of 150
voltage is applied to
HP or above:
the DC link bus
Exceeding 87,000
capacitor, while
hours (10 years)
correcting it according
to the capacitance
measured above.
Counts the time Exceeding 43,500
elapsed when the hours (five years)
voltage is applied to
For inverters of 150
the capacitors, while
HP or above:
correcting it according
Exceeding 87,000
to the ambient
hours (10 years)
temperature.
Counts the run time of Exceeding 43,500
the cooling fans. hours (five years)
For inverters of 150
HP or above:
Exceeding 87,000
hours (10 years)
6-155
6.3 Details of Function Codes
H98 (Protection/Maintenance Function)
Prediction
timing
At periodic PRG > 3 > 4[2/7]
inspection 3. Inverter
information
(H98: Bit 3 = 0)
4. Maintenance
information (2 of
7 page)
⇒ Cap (capacity)
During ordinary
operation
(H98: Bit 3 = 1)
During ordinary PRG > 3 > 4[2/7]
operation 3. Inverter
information
4. Maintenance
information (2 of
7 page)
⇒ Enet
(Energization
period)
⇒ Remt
(Remaining time)
During ordinary PRG > 3 > 4[3/7]
operation 3. Inverter
information
4. Maintenance
information (3 of
7 page)
⇒ Enet
(Energization
During ordinary
period)
operation
⇒ Life
(Indication of
life)
)
On the LCD
monitor