Lifetime Warning Output Function - Hitachi WJ200 Series Instruction Manual

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 Terminal
Code Symbol
39
WAC
WAF
40
Valid for inputs:
Required settings
Notes:
Function Name State
Capacitor life
warning signal
Cooling fan warning
signal
11, 12, AL0 – AL2
ON Calculated lifetime of the electrolytic capacitor is
expired
OFF Electrolytic capacitor is normal
ON Calculated lifetime of the cooling fan is expired
OFF Cooling fan is normal
Example for terminal [11] (default output
configuration shown – see
Inverter output
terminal circuit
Example for terminal [AL0], [AL1], [AL2] (requires
output configuration – see
Inverter logic
circuit board
AL0
Power
supply
See I/O specs on
Description
page 3-90):
WAC
CM2 11
RY
page 4-52 and 3-90):
WAC
AL1 AL2
Load
page 4-6