Yaskawa PC NC - Manual (Page 232)

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YASNAC PCNC Operating Manual Appendix 2: Alarm Tables
2.3 TROUBLESHOOTING
Alarm No. : 1098 Fan is Faulty
ALARM CAUSE CHECK ITEM COUNTER MEASURE
Fan is faulty.
Check fan. Ensure connections are If the fan is faulty, replace it. Contact your
good. Check for obstruction. Yaskawa representative.
Alarm No. : 1099 High Temperature
ALARM CAUSE CHECK ITEM COUNTER MEASURE
Ambient temperature of the NC rack Open NC door and check that the cooling If the fan is faulty, replace it. Contact your
exceeded the specified value* due to fan motor is operating. Yaskawa representative.
cooling fan failure. Make sure that air is blowing out through
the ventilation port of the cooling duct. If cooling fan is block remove obstruction.
* : 70 degC +/- 3 degC Check to make sure ventilation port of
When measured above CPS-18 cooling duct is not obstructed.
Allow the power supply unit to cool by
Internal temperature of the power supply turning OFF the power with the NC unit Change the power supply unit. Contact
unit is high. door opened. If the alarm occurs even your Yakawa representative.
after the power supply unit has been
cooled for 30 minutes, the power supply
unit is faulty.
Ambient temperature of the NC unit is high.* Measure ambient temperature. This is not the failure of the NC unit.
Remove the cause.
* Allowable temperature range for If the NC unit is subject to direct sunlight,
‘operation is 0 - 40 degC. the NC unit temperature will exceed the
allowable limit.