KFAS: Fanuc CNC Parts, Service, & Repair

Phone: (281) 769-2671F

E-mail:  service@kfasllc.com

Alarm List for A06B-6111-Hxxx A06B-6141-Hxxx A06B-6112-Hxxx 

Alpha-i SPM is equipped with LED Status  to indicate alarm condition. 

FANUC SPINDLE AMPLIFIER MODULE ALARM CODES LIST

Alarm Codes A0
Faulty SPM control PCB

Alarm Codes A1
Faulty SPM control PCB

Alarm Code b0
    An error occurred in communication between amplifier modules (SPM and
    PSM).
    Troubleshooting when this alarm is issued
    (a) The cable is defective. If the connection is correct, replace the
    (b)The SPM or PSM is defective. Replace the SPM, PSM,
        SPM control printed-circuit board, or PSM control printed-circuit
        board.

Alarm Codes C0,C1, and C2
    An error occurred in serial communication data between the CNC and
    spindle amplifier module.
    Troubleshooting when this alarm is issued
        (a)The SPM is defective. Replace the SPM or SPM control printed-
            circuit board.
        (b)The CNC is defective. Replace the board or module related to
            the serial spindle.


Alarm Code 01
Spindle motor overheat
Faulty thermostat in spindle motor or faulty feedback cable.†
Spindle motor overload, spindle motor cooling fan failure

Alarm Code 02
Excessive speed deviation
SPM overload
Faulty speed sensor and / or spindle feedback cable
Faulty SPM

Alarm Code 03
DC Link fuse blown.
Replace SPM

Alarm Code 07
Excessive Speed
Incorrect speed detector parameter setting

Alarm Code 09
SPM overload/ overheat
Check SPM internal and external cooling fan
Send in SPM to us for wash & test service

Alarm Code 11
Over-voltage in DC link section
Faulty incoming power or PSM

Alarm Code 12
Over-current in DC link section
Defective motor, power cable or SPM
Check motor and power cable then replace SPM

Alarm Code 13
CPU Internal data memory abnormality
Faulty SPM

Alarm Code 15
Spindle switch/output switch alarm
Improper spindle switching sequence
Faulty spindle power MCC or control circuit

Alarm Code 16
RAM checksum error
Faulty SPM

Alarm Code 18
ROM checksum error
Faulty SPM

Alarm Code 19
Excessive U phase current detection in SPM
Faulty SPM

Alarm Code 20
Excessive V phase current detection in SPM
Faulty SPM

Alarm Code 24 (Normal if the CNC control is turned off)
Serial transfer data stopped
Faulty command cable between the CNC and spindle.
Faluty SPM control PCB.
Faulty spindle control circuit on CNC.

Alarm Code 25
Serial transfer data stopped†
Faulty command cable between the CNC and spindle.†
Faluty SPM control PCB.†
Faulty spindle control circuit on CNC.

Alarm Code 26
The Cís contouring control speed detection signal (detector on the motor) is abnormal
Faulty speed sensor, feedback cable for c axis contouring control.

Alarm Code 27
Position coder signal disconnection
Faulty position coder and / or feedback cable.

Alarm Code 28
Speed detection error of C's contouring control
Faulty feedback sensor/ cable.

Alarm Code 29
Excessive load
SPM overload. Check operating conditions

Alarm Code 30
Input circuit over current
Faulty incoming power / AC reactor†
Faulty PSM

AL-31
The motor can not rotate at a specified speed.
Faulty speed sensor and / or spindle feedback cable
Faulty SPM

AL-32
Faulty SPM control PCB

AL-33
Insufficient DC link section charging
Faulty PSM

AL-34
The spindle parameter setting is invalid.†
Improper spindle parameter setting.

AL-35
Excessive gear ratio data setting
Incorrect gear ratio parameter setting.

AL-36
Error counter overflow
Gear ratio and / or position gain parameters are too large

AL-37
Speed detector parameter setting error

AL-39
Detection error of 1-rotation signal for C's contouring control†
Faulty feedback sensor/ cable.†
Incorrect parameter setting for Cís contouring control detector.

AL-40
Detection error of 1-rotation signal for C's contouring control
Faulty feedback sensor/ cable.
Incorrect parameter setting for Cís contouring control detector.

AL-41
Detection error of 1-rotation signal for C's contouring control
Faulty feedback sensor/ cable.
Incorrect parameter setting for Cís contouring control detector.

AL-42
Position coder signal abnormal
Faulty position coder and/ or feedback cable

AL-43
Position coder signal abnormal
Faulty position coder and/ or feedback cable

AL-44
Faulty SPM control PCB

AL-46
Position coder signal abnormal
Faulty position coder and/ or feedback cable

AL-47
Position coder signal abnormal
Faulty position coder and/ or feedback cable

AL-48
Position coder 1-rotation signal abnormality
Faulty position coder and/ or feedback cable

AL-49
Spindle synchronization control error

AL-50
Spindle synchronization control error

AL-51
Under voltage at DC link section†
Check incoming voltage & PSM

AL-52
ITP signal abnormality 1
CNC control error. Faulty SPM

AL-53
ITP signal abnormality 2
CNC control error. Faulty SPM

AL-54
Overload current alarm
SPM overload.
Check operating conditions of the spindle.

AL-55
Power line abnormality in spindle switching/output switching
Faulty spindle power MCC
Check the magnetic contactors connected to motor power cable
U, V, W.

AL-56
Cooling fan error
Replacement cooling Fan
Send in PSM to us for Wash & Test

Alarm Code 57
Control circuit is erroneous
Faulty SPM control PCB
Replace SPM control PCB†

Alarm Code 58
The temperature of PSM heat sink has risen abnormally.
PSM Cooling Fans†
Check PSM external cooling fan.
Send in PSM to us for Wash & Test

Alarm Code 59
PSM internal cooling fan error
Replace PSM Cooling fan (internal)
PSM Cooling Fans†
Send in PSM to us for Wash & Test

Alarm Code 73
The signal of the motor sensor is disconnected.
    (1) If this alarm is issued when the motor is deactivated
        (a) The setting of a parameter is incorrect. Refer to "FANUC
            AC SPINDLE MOTOR i series Parameter Manual (B-65280EN),
            and check the parameter for sensor setting.
        (b) The cable is disconnected. Replace the cable.
        (c)The sensor is not adjusted correctly. Adjust the sensor
            signal. If the sensor signal cannot be adjusted correctly, or
            the sensor signal is not observed, replace the connection
            cable and sensor.
        (d)The SPM is faulty. Replace the SPM or SPM control
            printed circuit board.
    (2) If this alarm is issued when the cable is moved (as in the case
            where the spindle moves). The conductor may be broken. Replace
            the cable. If coolant has penetrated into the connector, clean the
            connector.
    (3) If this alarm is issued when the motor rotates
        (a)The shielding of the cable between the sensor and the
            SPM is faulty. Referring to, "Connection," in "FANUC
            SERVO AMPLIFIER i series Descriptions (B-65282EN),"
            check the shielding of the cable.
        (b)The signal cable is bundled with the servo motor power
            lead. If the cable between the sensor and the SPM is
            bundled with the servo motor power lead, separate them
            from each other.

Alarm Code 74
    The CPU test failed to end normally. When this alarm is issued, replace
    the SPM or SPM control printed circuit board.

Alarm Code 75
    An error occurred in the CRC test. When this alarm is issued, Replace the
    SPM or SPM control printed circuit board.

Alarm Code 79
    An abnormal operation was detected in the initial test. When this alarm is
    issued, replace the SPM or SPM control printed circuit board.

Alarm Code 81
The position where the one-rotation signal of the motor sensor is
generated is incorrect.
    (1) If the external one-rotation signal is used
        (a) The settings of parameters are incorrect. Check that the
            gear ratio data matches the specification of the machine.

        Fanuc-15i PRM 3171 3173 Fanuc 16i/18i/21i PRM 4171 4173
    Denominator of gear ratio between motor sensor and spindle
    Fanuc-15i PRM 3172 3174 Fanuc 16i/18i/21i PRM 4172 4174
    Numerator of gear ratio between motor sensor and spindle
        (b) Slippage between the spindle and motor. Check that
            there is no slippage between the spindle and motor. The
            external one-rotation signal is not applicable to V-belt
            connection.
     (2)Troubleshooting in other cases
        (a) The setting of a parameter is incorrect. Refer to "FANUC
            AC SPINDLE MOTOR i series Parameter Manual (B-
            65280EN)," and check the parameter for sensor setting.

        (b) A sensor (MZi sensor or BZi sensor) is not adjusted
            correctly. Adjust the sensor signal. If the sensor signal
            cannot be adjusted correctly, or the sensor signal is not
            observed, replace the connection cable and sensor.
        (c) The shielding of the cable between the sensor and SPM is
            faulty. Referring to "Connection," in "FANUC SERVO
            AMPLIFIER i series Descriptions (B-65282EN)," check the
            shielding of the cable.
        (d) The signal cable is bundled with the servo motor power
            lead. If the cable between the sensor and SPM is bundled
            with the servo motor power lead, separate them from each
            other.
        (e) The SPM is faulty. Replace the SPM or SPM control
            printed circuit board.

Alarm Code 82
    The one-rotation signal of the motor sensor is not generated.
    Troubleshooting when this alarm is issued
        (a) The setting of a parameter is incorrect. Refer to "FANUC AC
                SPINDLE MOTOR i series Parameter Manual (B-65280EN)," check
                the parameter for sensor setting.

        (b) The MZi sensor or BZi sensor is not adjusted correctly. Adjust
                the sensor. If the sensor cannot be adjusted or the signal is not
                observed, replace the connection cable and sensor.
        (c) The external one-rotation signal is faulty. Check the check pin
                EXTSC1 on the spindle check board. If the signal is not generated
                per rotation, replace the connection cable and position coder. (
        (d) The SPM is faulty. Replace the SPM or SPM control printed
                circuit board.

Alarm Code 83
    The SPM checks the pulse counts of phases A and B each time a one-
    rotation signal is generated. The alarm is issued when a pulse count beyond the
    specified range is detected.
   (1) If this alarm is issued when the cable is moved (as in the case
    where the spindle moves) The conductor may be broken. Replace
    the cable. If coolant has penetrated into the connector, clean the
    connector.
    (2)Troubleshooting in other cases
        (a)The setting of a parameter is incorrect. Refer to "FANUC    
            AC SPINDLE MOTOR i series Parameter Manual (B-
            65280EN)," check the parameter for sensor setting.
        (b)The MZi sensor or BZi sensor is not adjusted correctly.
            Adjust the sensor. If the sensor cannot be adjusted or the
            signal is not observed, replace the connection cable and
            sensor.
        (c)The shielding of the cable between the sensor and SPM is
            faulty. Referring to "Connection," in "FANUC SERVO
            AMPLIFIER i series Descriptions (B-65282EN)," check the
            shielding of the cable.
        (d) The signal cable is bundled with the servo motor power
            lead. If the cable between the sensor and SPM is bundled
            with the servo motor power lead, separate them from each
            other.
        (e) The SPM is faulty. Replace the SPM or SPM control
            printed circuit board.

Alarm Code 84
    The spindle sensor signal was disconnected. Refer to Alarm Code 73 for
    this alarm trouble shooting.

Alarm Code 85
    The one-rotation signal of the spindle sensor occurred in an incorrect
    location. Refer to Alarm Code 81 for this alarm trouble shooting.

Alarm Code 86
    No spindle sensor one-rotation signal occurred. Refer to Alarm Code 82
    for this alarm trouble shooting.

Alarm Code 87
    A spindle sensor signal is abnormal. Refer to Alarm Code 83 for this alarm
    trouble shooting.

Alarm Code 88
    The heat sink cooling fan is not running. If this alarm is issued, replace the
    SPM heat sink cooling fan.

Alarm Codes A, A1, and A2
    The control program is not running. An error was detected when the
    control program was running.

    (1) If this alarm is issued when the spindle amplifier power is
        switched on
        (a) Wrong software specification
        (b)Defective printed-circuit board Replace the SPM or SPM
            control printed-circuit board.
    (2) If this alarm is issued when the motor is active.
        (a) Influence by noise Referring to "Installation" in "FANUC
            SERVO AMPLIFIER i series Descriptions (B-65282EN),"
            check the grounding wire. If the spindle sensor signal wire is
            bundled together with any motor power wire, separate them.

Alarm Code b0
    An error occurred in communication between amplifier modules (SPM and
    PSM).
    Troubleshooting when this alarm is issued
    (a) The cable is defective. If the connection is correct, replace the
    (b)The SPM or PSM is defective. Replace the SPM, PSM,
        SPM control printed-circuit board, or PSM control printed-circuit
        board.

Alarm Codes C0,C1, and C2
    An error occurred in serial communication data between the CNC and
    spindle amplifier module.
    Troubleshooting when this alarm is issued
        (a)The SPM is defective. Replace the SPM or SPM control printed-
            circuit board.
        (b)The CNC is defective. Replace the board or module related to
            the serial spindle.