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Fanuc alarm: 404 - SERVO ALARM: n-th AXIS VRDY ON

CNC Machine Control Manufacturer
Fanuc
Control Model
, 0/00/0-mate,
404 - SERVO ALARM: n-th AXIS VRDY ON

Alarm Description

Even though the n-th axis (axis 1-8) READY signal (MCON) went off, the servo amplifier READY signal (DRDY) is still on. Or, when the power was turned on, DRDY went on even though MCON was off. Check that the axis card and servo amplifierr are connected.

Additional Suggestions & Alarm Clarification

None currently

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Post troubleshooting recommendations for (Fanuc alarm: 404 - SERVO ALARM: n-th AXIS VRDY ON) error message below.

Fanuc alarm: 403 - SERVO ALARM: 3, 4TH AXIS VRDY OFF

CNC Machine Control Manufacturer
Fanuc
Control Model
, 0/00/0-mate,
403 - SERVO ALARM: 3, 4TH AXIS VRDY OFF

Alarm Description

3-axis, 4-axis servo amplifier READY signal (DRDY) went off.

Additional Suggestions & Alarm Clarification

None currently

Help Others
Post troubleshooting recommendations for (Fanuc alarm: 403 - SERVO ALARM: 3, 4TH AXIS VRDY OFF) error message below.

Fanuc alarm: 402 - SERVO ALARM: 3, 4TH AXIS OVERLOAD

CNC Machine Control Manufacturer
Fanuc
Control Model
, 0/00/0-mate,
402 - SERVO ALARM: 3, 4TH AXIS OVERLOAD

Alarm Description

3-axis, 4-axis overload signal is on. Refer to diagnosis display No. 722 or 723 for details.

Additional Suggestions & Alarm Clarification

None currently

Help Others
Post troubleshooting recommendations for (Fanuc alarm: 402 - SERVO ALARM: 3, 4TH AXIS OVERLOAD) error message below.

Fanuc alarm: 401 - SERVO ALARM: 1, 2TH AXIS VRDY OFF

CNC Machine Control Manufacturer
Fanuc
Control Model
, 0/00/0-mate,
401 - SERVO ALARM: 1, 2TH AXIS VRDY OFF

Alarm Description

1-axis, 2-axis servo amplifier READY signal (DRDY) went off.

Additional Suggestions & Alarm Clarification

None currently

Help Others
Post troubleshooting recommendations for (Fanuc alarm: 401 - SERVO ALARM: 1, 2TH AXIS VRDY OFF) error message below.

Fanuc alarm: 400 - SERVO ALARM: 1, 2TH AXIS OVERLOAD

CNC Machine Control Manufacturer
Fanuc
Control Model
, 0/00/0-mate,
400 - SERVO ALARM: 1, 2TH AXIS OVERLOAD

Alarm Description

1-axis, 2-axis overload signal is on. Refer to diagnosis display No. 720 or 721 for details.

Additional Suggestions & Alarm Clarification

None currently

Help Others
Post troubleshooting recommendations for (Fanuc alarm: 400 - SERVO ALARM: 1, 2TH AXIS OVERLOAD) error message below.

Fanuc alarm: 319/329/339/349/359/369/379/389 - SPC ALARM: n AXIS PULSE CODER

CNC Machine Control Manufacturer
Fanuc
Control Model
, 0/00/0-mate,
319/329/339/349/359/369/379/389 - SPC ALARM: n AXIS PULSE CODER

Alarm Description

The n axis pulse coder has a fault.

Additional Suggestions & Alarm Clarification

Reference Daignostics 760-767 and 770-777

Help Others
Post troubleshooting recommendations for (Fanuc alarm: 319/329/339/349/359/369/379/389 - SPC ALARM: n AXIS PULSE CODER) error message below.

Fanuc alarm: 318/328/338/348/358/368/378/388 - APC alarm: nth-axis battery low 2

CNC Machine Control Manufacturer
Fanuc
Control Model
, 0/00/0-mate,
318/328/338/348/358/368/378/388 - APC alarm: nth-axis battery low 2

Alarm Description

Please reference Alarm 308

Additional Suggestions & Alarm Clarification

First replace the batteries if they drain quickly you must determine which pulse coder or cable is shorted and drawing the battery down. (APC)=Absolute pulse coder

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Post troubleshooting recommendations for (Fanuc alarm: 318/328/338/348/358/368/378/388 - APC alarm: nth-axis battery low 2) error message below.

Fanuc alarm: 317/327/337/347/357/367/377/387 - APC alarm: nth-axis battery low 1

CNC Machine Control Manufacturer
Fanuc
Control Model
, 0/00/0-mate,
317/327/337/347/357/367/377/387 - APC alarm: nth-axis battery low 1

Alarm Description

Please reference Alarm 307

Additional Suggestions & Alarm Clarification

First replace the batteries if they drain quickly you must determine which pulse coder or cable is shorted and drawing the battery down. (APC)=Absolute pulse coder

Help Others
Post troubleshooting recommendations for (Fanuc alarm: 317/327/337/347/357/367/377/387 - APC alarm: nth-axis battery low 1) error message below.

Fanuc alarm: 316/326/336/346/356/366/376/386 - APC alarm: nth-axis battery voltage 0

CNC Machine Control Manufacturer
Fanuc
Control Model
, 0/00/0-mate,
316/326/336/346/356/366/376/386 - APC alarm: nth-axis battery voltage 0

Alarm Description

Please reference Alarm 306

Additional Suggestions & Alarm Clarification

1. First replace the batteries to see if problem goes away. 2. If they drain quickly you must determine which pulse coder or cable is shorted and drawing the battery down. (APC)=Absolute pulse coder. 3. If the alarm occurs immediately after power on when a cable or encoder was disconnected from the battery. Power down and up again to clear battery voltage 0 alarm.

Help Others
Post troubleshooting recommendations for (Fanuc alarm: 316/326/336/346/356/366/376/386 - APC alarm: nth-axis battery voltage 0) error message below.

Fanuc alarm: 315/325/335/345/355/365/375/385 - APC alarm: nth-axis pulse error

CNC Machine Control Manufacturer
Fanuc
Control Model
, 0/00/0-mate,
315/325/335/345/355/365/375/385 - APC alarm: nth-axis pulse error

Alarm Description

Please reference Alarm 305

Additional Suggestions & Alarm Clarification

Absolute pulse coder (APC)-, Sometimes can occur on power up for machines with a scale enabled instead of an encoder or even related to excessive slop in the drive system such as rotary tables.

Help Others
Post troubleshooting recommendations for (Fanuc alarm: 315/325/335/345/355/365/375/385 - APC alarm: nth-axis pulse error) error message below.
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