Fanuc Spindle Alarms for Troubleshooting

A06B-6079-H106

Alarm # Led Display Content of FANUC SPINDLE Alarms
8 4 2 1

1

     

o

Motor Overheat

2

   

o

  Speed deviates from commanded speed

3

   

o

o

Regenerative fault

6

 

o

o

  Excess Motor Speed Analog

7

 

o

o

o

Excess Motor Speed Digital

8

o

      Voltage higher than specified

9

o

   

o

Radiator for power semiconductor overheat

10

o

 

o

  +15Volt Supply is low

11

o

 

o

o

DC Link voltage is high

12

o

o

    DC Link current is high

13

o

o

 

o

CPU and peripheral parts are defective

14

o

o

o

  ROM is defective

Alarm List for A06B-6044-Hxxx

Alarm List for the following Drives:

Alarm # Led Display Content of Alarms
8 4 2 1

1

     

o

Motor Overheat

2

   

o

  Speed deviates from commanded speed

3

   

o

o

Fuse F7in DC link is blown out.

4

 

o

    Fuses F1,F2,F3 for AC input blown out.

5

 

o

 

o

Fuses AF2 or AF3 on PCB are blown out.

6

 

o

o

  Excess Motor Speed Analog

7

 

o

o

o

Excess Motor Speed Digital

8

o

      Voltage higher than specified (24v)

9

o

   

o

Radiator for power semiconductor overheat

10

o

 

o

  +15Volt Supply is low

11

o

 

o

o

DC Link voltage is high

12

o

o

    DC Link current is high

13

o

o

 

o

CPU and peripheral parts are defective

14

o

o

o

  ROM is defective

15

o

o

o

o

Option circuit fault.

Digital AC Spindle Drive

Alarm List for A06B-6055-Hxxx

Alarm List for the following drives:

  • Model 3 thru 22    A06B-6055-Hxxx

 

Alarm Display Alarm Content

AL-01

Motor Overheated

AL-02

Speed deviates from commanded speed

AL-03

Fuse F7in DC link is blown out.

AL-04

Fuses F1,F2,F3 for AC input blown out.

AL-06

Excess Motor Speed Analog

AL-07

Excess Motor Speed Digital

AL-08

Voltage higher than specified (24v)

AL-09

Radiator for power semiconductor overheat

AL-10

+15v power supply is abnormally low

AL-11

DC Link voltage is high

AL-12

DC Link current is high

AL-13

Data memory for CPU abnormal

AL-16

RAM in NVRAM is abnormal

AL-17

ROM in NVRAM is abnormal

AL-18

Check sum alarm of ROM

AL-19

Excessive alarm of U phase current detection circuit offset

AL-20

Excessive alarm of V phase current detection circuit offset

AL-21

Excessive alarm of velocity command circuit offset.

AL-22

Excessive alarm of velocity detection circuit offset.

AL-23

Excessive alarm of ER circuit offset.

AL-14

ROM is abnormal

AL-15

Spindle selection control circuit is abnormal.

Alarm List for A06B-6059-Hxxx

Alarm List for the following drives:

  • Model 1S thru 3S   A06B-6059-Hxxx

 View Fanuc Spindle Amp Alarm Codes for Alpha Series here. 

Alarm # Meaning

AL-01

Motor Overheat

AL-02

Speed deviates from commanded speed

AL-03

24v Fuse is blown. (before PCB edition 09A)

AL-04

 

AL-05

 

AL-06

Excess Motor Speed Analog

AL-07

Excess Motor Speed Digital

AL-08

Over voltage

AL-09

Overheat of radiator

AL-10

Low voltage of input power.

AL-11

Excessive high voltage of DC link

AL-12

Abnormal current of DC link

AL-13-15

 

AL-16-23

Defective arithmetic circuit and peripheral circuit

No indication

Defective ROM

Alarm List for A06B-6059-Hxxx

Alarm List for the following drives:

  • Model 6S-26S    A06B-6059-Hxxx
Alarm # Meaning

AL-01

Motor Overheat

AL-02

Speed deviates from commanded speed

AL-03

24v Fuse is blown. (before PCB edition 09A)

AL-04

Open phase of input power.

AL-05

 

AL-06

Excess Motor Speed Analog

AL-07

Excess Motor Speed Digital

AL-08

Over voltage

AL-09

Overheat of radiator

AL-10

Low voltage of input power.

AL-11

Excessive high voltage of DC link

AL-12

Abnormal current of DC link

AL-13

Defective arithmetic circuit

AL-14

Defective ROM

AL-15

Defective optional circuit.

AL-16-23

Defective arithmetic circuit and peripheral circuit

No indication

Defective ROM

Dealing with FANUC spindle alarms?

Let MRO help you troubleshoot and repair your spindle amplifier, with our professional repair services! Or, if you need a replacement FANUC part, we have you covered with our extensive selection of FANUC parts.

Updated on March 20, 2024 by Joe Kaminski

Joe Kaminski

Joe Kaminski is an industrial automation specialist at MRO Electric. He has a background in industrial engineering and supply chain management. Joe has worked in the automation industry for over 10 years providing support to some of the largest companies in the world. For more info, visit www.mroelectric.com.

4 thoughts to “Fanuc Spindle Alarms for Troubleshooting”

  1. Buen día
    Tengo un spindle amplifier module A06B-6112-H002 #H550 y me aparece la alarma 20 y un mensaje: SPINDLE SERIAL LINK START FAULT
    Es problema del amplificador?

  2. We have a Denichi CNC lathe that gets code 2033 “spindle overload” and code 2039 CPU Error after approx. 8 minutes of run time. then shuts down. Any clues as to what this might be?

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