3.TROUBLESHOOTING AND ACTION TROUBLESHOOTING B-65285EN/03
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3.4.6 Alarm Code 09
The temperature of the heat sink of the SPM main circuit has risen
abnormally. This alarm is issued for SPM-15i and later. With SPM-2.2i
to SPM-11i, however, Alarm 12 is issued for the same cause.
(1) If this alarm is issued during cutting (the heat sink temperature is
(a) If this alarm is issued when the load meter reads a value
below the continuous rating of the amplifier, check the
cooling state of the heat sink.
<1> If the cooling fan is stopped, check the power supply
(connector CX1A/B). If the cooling fan is still
inoperative, replace the SPM with a new one.
<2> When the ambient temperature is higher than the
specified temperature, lower the ambient temperature
to satisfy the specification.
(b) When this alarm is issued because the load meter reads a
value above the continuous rating of the amplifier, improve
the use method.
(c) When the heat sink on the back of the amplifier is too dirty,
clean the heat sink, for example, by blowing air. Consider the
use of a structure that prevents the heat sink from being
directly exposed to coolant.
(2) If this alarm is issued under a light load (the heat sink temperature
(a) When the frequency of acceleration/deceleration is too high
Set such a use condition that the average including output at
acceleration/deceleration does not exceed the continuous
(b) The parameters specific to the motor are not set correctly.
Referring to "FANUC AC SPINDLE MOTOR αi series
Parameter Manual (B-65280EN)," check the motor-specific
(3) Poor installation of the control printed-circuit board
Be sure to push the faceplate as far as it will go. (This alarm may
be displayed if one of the connectors for connection between the
control printed-circuit board and power printed-circuit board is
(4) If this alarm is issued when the heat sink temperature is low
Replace the SPM.