4−76
Lifetime Warning Output Function
Capacitor life warning signal- The inverter checks the operating life of the capacitors
on the internal circuit board on the basis of the internal temperature and cumulative
power on time. You can also monitor the state of the capacitor life warning signal
(WAF) in d022. If the WAC signal is given out, it is recommended to replace the main
PCB and control PCB.
Cooling fan warning signal- The inverter gives out the cooling fan speed-drop signal
(WAF) when it detects the rotation speed of the cooling fan drops down to approx. 75%
of the full speed. If “01” has been selected for the cooling fan control (b092), the inverter
will not give out the WAF signal even when the cooling fan is stopped. If the signal is
given out, check the cooling fan cover for clogging. You can also monitor the state of
WAF signal in d022.
Option
Code
Terminal
Symbol
Function Name State Description
39
WAC
Capacitor life
warning signal
ON Calculated lifetime of the electrolytic capacitor is
expired
OFF Electrolytic capacitor is normal
40
WAF Cooling fan warning
signal
ON Calculated lifetime of the cooling fan is expired
OFF Cooling fan is normal
alid for inputs:
11, 12, AL0 – AL2 Example for terminal [11] (default output
configuration shown – see page 3-90):
Example for terminal [AL0], [AL1], [AL2] (requires
output configuration – see page 4-52 and 3-90):
See I/O specs on page 4-6
Required settings
Notes:
RY
Inverter output
terminal circuit
CM2 11
WAC
AL1
Power
supply
Load
AL0 AL2
Inverter logic
circuit board
WAC
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