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Fanuc Servo Alarm List



Below is a list for your fanuc servo alarm more easily in the repair of CNC machine. For more detail you can open the manual book CNC Machining



ALARM on PCB

RAM Parity Alarm : AL-16

ROM Parity Alarm : AL-18

A/D Converter : AL- 19, 20

SIC LSI : AL- 32, 52, 53

CPU Test Alarm : AL- 74, 75

Initial Test Alarm : AL- 79



ALARM on PSM

Overvoltage in DC Link : AL-11

Undervoltage in DC Link : AL-51

Undervoltage in PCB : AL-b1

Input Circuit Overcurrent : AL-30

Insufficient charging in DC: AL-33

Regenerative Energy : AL-57, b2

Over load : AL-58

Stop of Cooling Fan : AL-59

Other Alarm : AL-98



ALARM on SPM

DC Link Fuse Blow :AL-03

Excessive load (OH) : AL- 09

Overcurrent in DC Link : AL- 12

Stop of Cooling Fan : AL-56

Stop of Cooling Fan : AL-88

Insufficient charging in DC : AL-97



ALARM for SENSOR

Excessive Speed : AL-02

: AL-07

Temperature : AL-06

Position Sensor Polar : AL-21

Position Coder : AL-27, 41, 42, 46, 47

Motor Sensor : AL- 73, 81, 82, 83

Spindle Sensor : AL-84, 85, 86, 87

Differential mode : AL-43, 49

Common alarm : AL-31



ALARM on Motor and Other

Motor overheat : AL-01

Switch Circuit : AL-15, 55

Short Time Over Load : AL-29

Over Load : AL-54

Position Deviation Error : AL-36

Energy of Back EMF : AL-b3

Parameter Miss Setting : AL-34, 35, 37

: AL-49, 50, 57



Communication ALARM

Communication with CNC : AL-24

Amp : AL-66

Amp-Module : AL-b0

Communication Data Alarm : AL-C0, C1, C2

Are you interested in my other articles Fanuc Parameter Backup.



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