Yaskawa i80M Maintenance Manual - Manual (Page 96)

4.2 TROUBLESHOOTING BY ALARM CODES (Cent’d)
4.2.4 ALARM 1099 (TEMPERATURE ALARM INSIDE THE PANEL)
Table 4.6
Cause of Trouble
Ambient temperature of
NC rack exceeded the
specified value (70 “C 3 “C)
by measuring at top of
or as a
result of fan failure.
Failure of power supply
unit
or CPS-16F)
(
Temperature detector is
built inside the power
supply unit.
)
Ambient temperature of
NC panel is too high.
(Applicable temperature
range is O +40 ‘C. )
Check Method
Open NC panel door and ensure that
the fan runs normally.
Ensure that air comes out of exhaust
port at the cooling duct.
Ensure that air intake port of cooling
duct is not blocked.
●
Turn OFF power supply, open the
door of NC panel and cool it for
about 30 min.
If the alarm still lights.
●
Measure the ambient temperature.
●
The temperature may rise if NC
panel is exposed to direct rays of the
sun.
Solution
Replace the fan if faulty.
Call our service person-
nel Yaskawa representa-
tive
If cooling duct is
clogged, remove the
cause of clogging and
restart the operation.
l’he power supply unit
be NC placed.
Yaskawa
(Y ASREP).
●
Reduce the effects of
temperature rise by
shielding the NC unit,
etc.