3.TROUBLESHOOTING AND ACTION TROUBLESHOOTING B-65285EN/03
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3.3.5 Overheat Alarm
(Alarm identification method)
#7 #6 #5 #4 #3 #2 #1 #0
<1> Alarm 1 OVL
LVA OVC HCA HVA DCA FBA OFA
<2> Alarm 2 ALD EXP
OVL ALD EXP Alarm description Action
1 1 0 Motor overheat 1
1 0 0 Amplifier overheat 1
(Action)
Action 1: If this alarm is issued after a long-time of continuous
operation, it is considered that the motor and amplifier are
overheated. Stop operation for a while, then make a check.
If this alarm is still issued after the power is off for about 10
minutes then is turned on again, the thermostat is
considered to be faulty. If this alarm is issued intermittently,
increase the time constant or increase stop time in the
program to suppress the rise in temperature.
3.3.6 Invalid Servo Parameter Setting Alarm
The invalid servo parameter setting alarm is issued when a setting out
of the specifiable range is specified, or an overflow has occurred in an
internal calculation. When an invalid parameter is detected on the servo
side, alarm 4 #4 (PRM) = 1 results.
(Alarm identification method)
#7 #6 #5 #4 #3 #2 #1 #0
<4> Alarm 4
DTE CRC STB PRM
For details and action required when the invalid servo parameter setting
alarm is issued on the servo side, refer to the FANUC AC SERVO
MOTOR αis/αi series Parameter Manual (B-65270EN).
(Reference information)
Method of checking details of an invalid parameter detected on the
servo side
(For Series 15i)
A number is indicated in the item "Details of invalid parameter" on
the servo alarm screen (Fig. 3.3.1(b)).
(For Series 16i, 18i, 21i, 0i, and Power Mate i)
A number is indicated in No. 352 of the diagnosis screen.