Fanuc

Fanuc alarm: 405 - SERVO ALARM: (ZERO POINT RETURN FAULT)

CNC Machine Control Manufacturer
Fanuc
Control Model
16/18/21, 16i/18i/21i, 160i/180i/210i, , 0i
405 - SERVO ALARM: (ZERO POINT RETURN FAULT)

Alarm Description

Position control system fault. Due to an NC or servo system fault in the reference position return, there is the possibility that reference position return could not be executed correctly. Try again from the manual reference position return.

Additional Suggestions & Alarm Clarification

None currently

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Post troubleshooting recommendations for (Fanuc alarm: 405 - SERVO ALARM: (ZERO POINT RETURN FAULT)) error message below.

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

CNC Machine Control Manufacturer
Fanuc
Control Model
16/18/21, 16i/18i/21i, 160i/180i/210i, , 0i
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 servo interface module and servo amp 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: CARD/SOFT MISMATCH

CNC Machine Control Manufacturer
Fanuc
Control Model
16/18/21, 16i/18i/21i, 160i/180i/210i, , 0i
403 - SERVO ALARM: CARD/SOFT MISMATCH

Alarm Description

The combination of the axis control card and servo software is illegal. The possible causes are as follows: a A correct axis control card is not provided. a Correct servo software is not installed on flash memory.

Additional Suggestions & Alarm Clarification

None currently

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Post troubleshooting recommendations for (Fanuc alarm: 403 - SERVO ALARM: CARD/SOFT MISMATCH) error message below.

Fanuc alarm: 402 - SERVO ALARM: SV CARD NOT EXIST

CNC Machine Control Manufacturer
Fanuc
Control Model
16/18/21, 16i/18i/21i, 160i/180i/210i, , 0i
402 - SERVO ALARM: SV CARD NOT EXIST

Alarm Description

The axis control card is not provided.

Additional Suggestions & Alarm Clarification

None currently

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Post troubleshooting recommendations for (Fanuc alarm: 402 - SERVO ALARM: SV CARD NOT EXIST) error message below.

Fanuc alarm: 401 - SERVO ALARM: n-TH AXIS VRDY OFF

CNC Machine Control Manufacturer
Fanuc
Control Model
16/18/21, 16i/18i/21i, 160i/180i/210i, , 0i
401 - SERVO ALARM: n-TH AXIS VRDY OFF

Alarm Description

The n-th axis (axis 1-8) servo amplifier READY signal (DRDY) went off. Refer to procedure for troubleshooting.

Additional Suggestions & Alarm Clarification

None currently

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Post troubleshooting recommendations for (Fanuc alarm: 401 - SERVO ALARM: n-TH AXIS VRDY OFF) error message below.

Fanuc alarm: 400 - SERVO ALARM: n-TH AXIS OVERLOAD

CNC Machine Control Manufacturer
Fanuc
Control Model
16/18/21, 16i/18i/21i, 160i/180i/210i, , 0i
400 - SERVO ALARM: n-TH AXIS OVERLOAD

Alarm Description

The n-th axis (axis 1-8) overload signal is on. Refer to diagnosis display
No. 201 for details.

Additional Suggestions & Alarm Clarification

None currently

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Post troubleshooting recommendations for (Fanuc alarm: 400 - SERVO ALARM: n-TH AXIS OVERLOAD) error message below.

Fanuc alarm: 495 - SERVO ALARM: 5, 6TH AXIS ZEROPOINT RETURN

CNC Machine Control Manufacturer
Fanuc
Control Model
, 0/00/0-mate,
495 - SERVO ALARM: 5, 6TH AXIS ZEROPOINT RETURN

Alarm Description

This is a position control circuit error. It is likely that a return to the
reference position failed because of an error in the NC or the servo
system. Retry a return to the reference position.

Additional Suggestions & Alarm Clarification

None currently

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Post troubleshooting recommendations for (Fanuc alarm: 495 - SERVO ALARM: 5, 6TH AXIS ZEROPOINT RETURN) error message below.

Fanuc alarm: 494 - SERVO ALARM: 5, 6TH AXIS VRDY ON

CNC Machine Control Manufacturer
Fanuc
Control Model
, 0/00/0-mate,
494 - SERVO ALARM: 5, 6TH AXIS VRDY ON

Alarm Description

The axis card ready signal (MCON) for axes 5 and 6 is off, but the servo amplifier ready signal (DRDY) is not. Alternatively, when the power is applied, the DRDY is on, but the MCON is not. Ensure that the axis card and servo amplifier are connected.

Additional Suggestions & Alarm Clarification

None currently

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Post troubleshooting recommendations for (Fanuc alarm: 494 - SERVO ALARM: 5, 6TH AXIS VRDY ON) error message below.

Fanuc alarm: 491 - SERVO ALARM: 5, 6TH VRDY OFF

CNC Machine Control Manufacturer
Fanuc
Control Model
, 0/00/0-mate,
491 - SERVO ALARM: 5, 6TH VRDY OFF

Alarm Description

5-axis, 6-axis servo amplifier READY signal (DRDY) went off.

Additional Suggestions & Alarm Clarification

None currently

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Post troubleshooting recommendations for (Fanuc alarm: 491 - SERVO ALARM: 5, 6TH VRDY OFF) error message below.

Fanuc alarm: 490 - SERVO ALARM: 5TH AXIS OVER LOAD

CNC Machine Control Manufacturer
Fanuc
Control Model
, 0/00/0-mate,
490 - SERVO ALARM: 5TH AXIS OVER LOAD

Alarm Description

5-axis, 6-axis overload signal is on. Refer to diagnosis display No. 724 or 725 for details.

Additional Suggestions & Alarm Clarification

None currently

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Post troubleshooting recommendations for (Fanuc alarm: 490 - SERVO ALARM: 5TH AXIS OVER LOAD) error message below.

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