Yaskawa Yasnac PC NC - Manual (Page 222)

YASNAC PC NC Operating Manual Appendix 2: Alarm Tables
A2 - 18
APPENDIX 2.3 TROUBLESHOOTING
Alarm No.: 1098 Fan is Faulty
Alarm No.: 1099 High Temperature
Alarm No.: 2061 to 2068 (Reference Point Return Error)
ALARM CAUSE CHECK ITEM COUNTER MEASURE
Fan is faulty. Check fan. Ensure connections are
good. Check for obstruction. If the fan is faulty, replace it. Contact
your Yaskawa representative.
ALARM CAUSE CHECK ITEM COUNTER MEASURE
Ambient temperature of the NC rack
exceeded the specified value* due to
cooling fan failure.
*: 70 degC +/- 3 degC
When measured above CPS-18
Open NC door and check that the cool-
ing fan motor is operating.
Make sure that air is blowing out
through the ventilation port of the cool-
ing duct.
Check to make sure ventilation port of
cooling duct is not obstructed.
If the fan is faulty, replace it.
Contact your Yaskawa representative.
If cooling fan is block remove obstruc-
tion.
Internal temperature of the power sup-
ply unit is high. Allow the power supply unit to cool by
turning OFF the power with the NC unit
door opened. If the alarm occurs even
after the power supply unit has been
cooled for 30 minutes, the power supply
unit is faulty. Change the power supply unit. Contact
your Yaskawa representative.
Ambient temperature of the NC unit is
high.** Allowable temperature range
for operation is 0 - 40 degC. Measure ambient temperature. If the
NC unit is subject to direct sunlight, the
NC unit temperature will exceed the
allowable limit. This is not the failure of the NC unit.
Remove the cause.
ALARM CAUSE CHECK ITEM COUNTER MEASURE
The reference point return start point is
at the zero point side of the decelera-
tion limit switch. If reference point return is started from a
point located at the reference point side
of DECLS an alarm occurs
#3073 D0 (1st Axis)
#3073 D1 (2nd Axis)
#3073 D2 (3rd Axis)
#3073 D3 (4th Axis)
#3073 D4 (5th Axis)
Return the axis to a position on the
DECLS side or away from it, then exe-
cute reference point return again.
Approach feedrate is too fast. Compare the setting for the approach
feedrate parameter with the parameter
list. Change the setting for parameters
pm2521 to pm2525 to an appropriate
value.