Default Re: fanuc OM AL-02 alarm on spindle drive

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Default Re: fanuc OM AL-02 alarm on spindle drive
Alarm 01 (AL-01) Motor Overheat
Causes
Damaged motor fan, overload, motor cooler is dirty, loose connection.
Remedy
Replace parts, clean cooler, check connections, review cutting conditions.

Alarm 02 (AL-02) Excessive Speed Deviation
Causes
Overload, transistor module is damaged, loose connections, error with speed feedback signal, blown fuse.
Remedy
Replace parts, check connections, review cutting conditions.

Alarm 03 (AL-03) Blown Fuse in DC Link Section
Causes
Indicates that the fuse F4 in DC link is blown (models 30S and 40S).
Remedy
Check power transistors and replace fuse.

Alarm 04 (AL-04) Input fuse blown / Input power open phase
Causes
Defective transistor module, blown fuse.
Remedy
Replace parts, replace fuse.

Alarm 05 (AL-05) Control Power Supply Fuse Blown
Causes
Defective PCB, Abnormal power supply voltage.
Remedy
Check power supply, replace PCB, replace fuse.

Alarm 07 (AL-07) Excessive Speed
Causes
Incorrect parameter setting.
Remedy
Reset parameter value.

Alarm 08 (AL-08) High Input Voltage
Causes
AC power supply too high, incorrect setting of toggle switch for voltage setting.
Remedy
Change setting from 200V to 230V.

Alarm 09 (AL-09) Heat sink is overheated
Causes
Cooling fan is defective, overload, dust and dirty.
Remedy
Replace fan, review cutting conditions, clean parts.

Alarm 10 (AL-10) Input Power Voltage Low
Causes
Drop in input power, momentary power failure.
Remedy
Correct case and reset alarm.

Alarm 11 (AL-11) Overvoltage of DC Link Circuit
Causes
High power impedance, PCB or transistor module are defective.
Remedy
Check AC power, replace damaged parts.

Alarm 12 (AL-12) Overcurrent flows to DC Link Circuit
Causes
Output terminals or internal motor of motor is shorted, defective PCB or transistor module.
Remedy
Check connections, replace damaged parts.

Alarm 13 (AL-13) CPU Inter Data Memory Alarm
Replace PCB

Alarm 15 (AL-15)
Cause
Spindle switch /output switch alarm.
Remedy
Check sequence.

Alarm 16 (AL-16) RAM Abnormality
Causes
Defective RAM or PCB.
Remedy
Replace RAM, replace PCB.

Alarm 18 (AL-18) Program ROM sum check error
Causes
Defective ROM.
Remedy
Replace ROM.

Alarm 19 (AL-19)
Causes
Defective A/D convertor or PCB, loose connections.
Remedy
Replace A/D convertor, replace PCB, check connections.

Alarm 20 (AL-20)
Causes
Defective PCB, loose connections.
Remedy
Replace PCB, check connections.

Alarm 24 (AL-24)
Causes
CNC power off, defective optical cable.
Remedy
Turn power on, clean or replace optical cable, replace LSI, replace PCB.

Alarm 25 (AL-25)
Cause
See Alarm 24
Remedy
See Alarm 24

Alarm 26 (AL-26)
Cause
Defective signal level/line of spindle motor for C axis control, defective detector circuit for C axis control, incorrect parameter setting.
Remedy
Check signal level, connect signal cable securely, replace detector circuit, set correct parameter value.

Alarm 27 (AL-27)
Causes
Position coder signal line defective, incorrect parameter setting.
Remedy
Connect signal cable securely, replace signal cable, set correct parameter values.

Alarm28 (AL-28)
Cause
Defective signal level/line of spindle motor for C axis control, defective detector circuit for C axis control.
Remedy
Check signal level, connect signal cable securely, replace detector circuit.

Alarm 29 (AL-29)
Cause
Overload.
Remedy
Review cutting conditions.

Alarm 30 (AL-30)
Cause
Defective power transistor, defective PCB.
Remedy
Replace power transistor, replace PCB.

Alarm 31 (AL-31)
Cause
Motor constrained, defective motor speed reversion signal/signal cable
Remedy
Connect cable securely, replace cable.