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SVPM (Combo Unit) Alarm Codes

SVPM (Combination units) Alarm Codes List

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When there’s an error with your CNC machine tool and an alarm is thrown, production halts and you’re stuck scrambling to find a solution. Refer to the table below to figure out what’s happening with your servo/spindle combination unit (SVPM) and what you must do to get it fixed.

If you need help identifying an alarm code, please give us a call for free over-the-phone support and determine if you have failed components that need repair or full replacement.

Speak with an experienced FANUC technician at Tri Star CNC Services to get to the root of the problem and get it fixed.

FANUC SVPM Alarm Codes

Alarm CodeDescription

Status 1 Spindle Unit

Status 2 Servo Unit

 

1, 01

Not applicable

Motor overheat

2, 02

Not applicable 

Excessive speed deviation

3, 03

Not applicable

DC link fuse is blown

4, 04

Not applicable 

Open phase in the converter main power supply

6, 06

Not applicable 

Temperature sensor disconnected

7, 07

Not applicable 

Excessive speed

9, 09

Not applicable 

Main circuit overload/IPM overheat

11

Not applicable 

Converter: DC link overvoltage

12

Not applicable 

IPM alarm

18

Not applicable 

Program sum check error

19

Not applicable 

Excessive offset of the phase U current detection circuit

20

Not applicable 

Excessive offset of the phase V current detection circuit

21

Not applicable 

Position sensor polarity setting incorrect

24

Not applicable 

Serial transfer data error

27

Not applicable 

Position coder disconnected

29

Not applicable 

Short-period overload

30

Not applicable 

Overcurrent in the converter input circuit

31

Not applicable 

Motor lock alarm

32

Not applicable 

Serial communication LSI RAM error

33

Not applicable 

Converter: DC link precharge failure

34

Not applicable 

Parameter data out of the specifiable range

35

Not applicable 

Gear ratio parameter error

36

Not applicable 

Error counter overflow

37

Not applicable 

Speed detector parameter error

41

Not applicable 

Position coder one-rotation signal detection error

42

Not applicable 

Position coder one-rotation signal not detected

46

Not applicable 

Position sensor one-rotation signal detection error during thread cutting

47

Not applicable 

Position coder signal error

50

Not applicable 

Excessive speed command calculation value during spindle synchronization

51

Not applicable 

Converter: DC link undervoltage

52

Not applicable 

ITP signal error I

53

Not applicable 

ITP signal error II

54

Not applicable 

Current overload alarm

58

Not applicable 

Converter: main circuit overload

73

Not applicable 

Motor sensor disconnected

75

Not applicable 

CRC test alarm

79

Not applicable 

Abnormal initial test operation

81

Not applicable 

Motor sensor one-rotation signal detection error

82

Not applicable 

Motor sensor one-rotation signal not detected

83

Not applicable 

Motor sensor signal error

84

Not applicable 

Spindle sensor disconnected

85

Not applicable 

Spindle sensor one-rotation signal detection error

86

Not applicable 

Spindle sensor one-rotation signal not detected

87

Not applicable 

Spindle sensor signal error

A, A1, A2

Not applicable 

Program ROM error

b0

Not applicable 

Communication error between amplifier and module

b1

Not applicable 

Converter: control power supply low voltage

C0, C1, C2

Not applicable 

Communication data alarm

 Not applicable

2

Inverter: control power supply undervoltage

Not applicable 

5

Inverter: DC link undervoltage

Not applicable 

b

Inverter: motor current alarm (L axis)

Not applicable 

C

Inverter: motor current alarm (M axis)

Not applicable 

d

Inverter: motor current alarm (N axis)

Not applicable 

8. (dot)

Inverter: IPM alarm (L axis)

Not applicable 

9. (dot)

Inverter: IPM alarm (M axis)

Not applicable 

A. (dot)

Inverter: IPM alarm (N axis)

Not applicable 

F

Inverter: cooling fan stopped of the radiator

Not applicable 

6

Inverter: overheat

Not applicable 

P

Communication error between amplifier and module

Not applicable 

U

FSSB communication error (COP10B)

4, 04

- (dash)

Input power supply is abnormal (open phase)

11

- (dash)

DC voltage at the DC link is abnormally high

30

- (dash)

The main circuit power module (IPM) has detected an abnormal condition.

33

- (dash)

The main circuit capacitor was not recharged within the specified time

51

- (dash)

In the main circuit, the DC voltage (DC link) has dropped.

58

- (dash)

Temperature of the main circuit heat sink has risen abnormally

59

- (dash)

Internal cooling circuit faulty

b1

- (dash)

Power supply voltage decrease


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