Fanuc AC Spindle Motor Alpha i-Beta i Series Parameters
60 fault codes documented
Serial Communication Error during Activation
A serial communication error occurred while the Series 16i system was being activated after power-on. This indicates a problem in the communication link to the spindle amplifier, preventing normal startup.
Spindle Amplifier Not Activated (16i)
The serial spindle amplifier for Series 16i was not activated normally at power-on time. This suggests an issue with the amplifier's internal readiness or its startup sequence.
Spindle Not Set for Control
A command for using the spindle was executed for Series 15i before the spindle to be controlled was correctly set up. This indicates an incorrect sequence in machine operation or parameter setup, preventing spindle control.
Motor Overheat
The spindle motor has exceeded its safe operating temperature limit, leading to an overheat condition. This can cause damage to the motor windings.
Excessive Velocity Error
The spindle motor's actual velocity deviated excessively from the commanded velocity. This can be caused by mechanical load, incorrect tuning, or encoder issues.
DC Link Fuse Blown
The DC link fuse on the spindle amplifier is blown, indicating an overcurrent event or a short circuit in the DC bus. This results in complete loss of power to the motor.
Converter Main Power Supply Open Phase
An open phase condition is detected in the main power supply to the converter unit of the spindle amplifier. This indicates a loss of one or more phases in the AC input.
Temperature Sensor Disconnected
The temperature sensor connected to the spindle amplifier is disconnected. This prevents accurate monitoring of motor temperature, leading to a potential overheat risk.
Overspeed
The spindle motor speed has exceeded the programmed or safe operating limit. This can be caused by incorrect speed commands, parameter settings, or a malfunctioning speed sensor.
Main Circuit Overload / IPM Overheat
The main circuit of the spindle amplifier is overloaded, or the IPM (Intelligent Power Module) has overheated. This indicates excessive current draw or insufficient cooling for the power module.
Low Power Supply Input Voltage
The input voltage to the low-power supply section of the spindle amplifier is below the acceptable threshold. This can cause unstable operation or prevent the amplifier from powering on.
Converter: DC Link Overvoltage
The DC link voltage in the converter section of the spindle amplifier has exceeded its safe limit. This typically occurs during deceleration when regenerative energy is not properly dissipated, or due to high input voltage.
DC Link Overcurrent / IPM Alarm
An overcurrent condition is detected in the DC link of the converter, or an alarm is issued by the IPM (Intelligent Power Module). This usually indicates a short circuit in the motor, power module failure, or sudden high load.
Amplifier ID Not Registered
The identification data for the spindle amplifier is not registered in the system. This prevents the CNC from recognizing and communicating with the amplifier.
Speed Range Switching / Spindle Switching Alarm
An error occurred during speed range switching or spindle switching operation. This can be caused by incorrect parameter settings, mechanical issues with the switching unit, or timing problems.
Amplifier ID Data Error
An error is detected in the identification data of the spindle amplifier. This prevents proper recognition and communication with the amplifier.
Position Sensor Polarity Setting Incorrect
The polarity setting for the position sensor is incorrect. This can lead to incorrect position feedback and unstable spindle control.
Spindle Amplifier Current Overload
The spindle amplifier is experiencing an overcurrent condition. This can be caused by excessive load on the motor, a short circuit, or incorrect current limits.
Position Coder Disconnected
The position coder (encoder) feedback cable is disconnected or the sensor is faulty. This results in loss of position feedback, making position control impossible.
Short-Time Overload
The spindle motor has experienced a short-duration overload condition, exceeding its temporary torque limits. This can occur during heavy cutting or rapid acceleration/deceleration.
Overcurrent in Converter Input Circuit
An overcurrent condition is detected in the input circuit of the converter unit. This indicates excessive current draw from the main power supply or a fault in the input stage.
Motor Lock Alarm
The spindle motor is detected to be in a locked or stalled condition, preventing rotation. This can be due to excessive mechanical load, a brake issue, or a fault in the motor itself.
Serial Communication LSI RAM Error
A RAM error is detected in the Serial Communication LSI. This indicates a problem with the internal memory of the communication interface.
Converter: DC Link Precharge Failure
The precharge circuit for the DC link in the converter failed to operate correctly. This can prevent the DC bus from charging to the proper voltage during startup.
Parameter Data Out of Specifiable Range
A parameter value is set outside its allowable or specifiable range. This can lead to unpredictable behavior or incorrect control calculations.
Duplicate Motor Number Setting (15i)
The same motor number (other than 0) is set more than once in parameter No. 5841 for Series 15i. This creates a conflict in spindle motor identification, which can lead to control issues.
Invalid Spindle Number Setting (15i)
A spindle number greater than the total number of physical spindles is set in parameter No. 5850 for Series 15i. This indicates an incorrect count or assignment of spindles.
Serial Spindle Amplifier Disconnected (15i)
The cable connected to the serial spindle amplifier for Series 15i is disconnected, or no serial spindle amplifier is connected. This prevents communication and control of the spindle.
Spindle/Motor Number Mismatch (15i)
The correspondence between spindle numbers and motor numbers for Series 15i is incorrect. This can lead to the wrong motor being controlled or general system malfunction.
CRC Communication Error (CNC-Spindle, 15i)
A CRC (Cyclic Redundancy Check) communication error occurred during data exchange between the CNC and the serial spindle amplifier for Series 15i. This indicates data corruption or signal integrity issues in the communication link.
Framing Error (CNC-Spindle, 15i)
A framing error occurred in communication between the CNC and the serial spindle amplifier for Series 15i. This typically indicates a mismatch in communication protocol or timing parameters.
Receive Error (CNC-Spindle, 15i)
A receive error occurred in communication between the CNC and the serial spindle amplifier for Series 15i. This indicates an issue with the data reception at the CNC or potentially corrupted incoming data.
Communication Error (CNC-Spindle Amplifier, 15i)
A general communication error occurred between the CNC and the serial spindle amplifier for Series 15i. This is a broad indication of communication failure, requiring further investigation into the communication link.
Communication Error (Serial Spindle Amplifiers, 15i)
A communication error occurred between serial spindle amplifiers (e.g., between motor numbers 1 and 2, or 3 and 4) for Series 15i. This indicates a problem in the inter-amplifier communication chain.
Parameter 5841 Out of Allowable Range (15i)
The value set in parameter No. 5841 (Motor number of each spindle) for Series 15i is outside the allowable range. This can lead to incorrect spindle operation or identification issues.
Spindle Control Initialization Not Terminated (15i)
Spindle control initialization for Series 15i was not terminated. This indicates that the spindle system did not complete its startup sequence successfully.
No Amplifier Number Set (15i)
No amplifier number could be set for a serial spindle amplifier for Series 15i. This can happen if the amplifier is not detected or there's a configuration issue preventing its assignment.
Serial Spindle Amplifier Communication Timeout (15i)
A time-out was detected in communication with a serial spindle amplifier for Series 15i. This indicates a delay or failure in receiving a response from the amplifier within the expected timeframe.
Incorrect Serial Spindle Amplifier Communication Sequence (15i)
The communication sequence with a serial spindle amplifier for Series 15i was incorrect. This suggests a protocol mismatch or timing issue in the communication exchange.
SIC-LSI Faulty (Spindle Amplifier Side, 15i)
The SIC-LSI (Serial Interface Converter-LSI) on the serial spindle amplifier side for Series 15i is faulty. This indicates a hardware error on the amplifier's communication interface.
SIC-LSI Write Error (Spindle Amplifier Side, 15i)
An error occurred when data was written to the SIC-LSI on the serial spindle amplifier side for Series 15i. This indicates a data integrity or hardware writing issue within the amplifier's communication interface.
SIC-LSI Read Error (Spindle Amplifier Side, 15i)
An error occurred when data was read from the SIC-LSI on the serial spindle amplifier side for Series 15i. This indicates a data integrity or hardware reading issue within the amplifier's communication interface.
Spindle Amplifier Alarm Cannot Be Cleared (15i)
An alarm on the spindle amplifier side for Series 15i could not be cleared. This may indicate a persistent fault or an issue preventing the alarm reset command from being processed.
Spindle Amplifier Reinitialization Error (15i)
An error occurred during spindle amplifier reinitialization for Series 15i. This suggests a problem with the amplifier's internal reinitialization process, which may affect its ability to restart correctly.
Automatic Parameter Setting Failed (15i)
Automatic parameter setting for the spindle amplifier (Series 15i) failed. This means the system could not correctly configure the spindle parameters automatically.
SIC-LSI Faulty (CNC Side, 15i)
The SIC-LSI (Serial Interface Converter-LSI) on the CNC side for Series 15i is faulty. This indicates a hardware error on the CNC's serial communication interface.
Incorrect Spindle/Motor Assignment (15i)
The assignment of spindles and spindle motors for Series 15i is incorrect. This can lead to improper control or system conflicts due to mismatched configuration.
Serial Spindle Amplifier Disconnected (30i)
The cable connected to the serial spindle amplifier for Series 30i is disconnected, or no serial spindle amplifier is connected. This prevents communication and control of the spindle.
CRC Communication Error (CNC-Spindle, 30i)
A CRC (Cyclic Redundancy Check) communication error occurred during data exchange between the CNC and the serial spindle amplifier for Series 30i. This indicates data corruption or signal integrity issues in the communication link.
Framing Error (CNC-Spindle, 30i)
A framing error occurred in communication between the CNC and the serial spindle amplifier for Series 30i. This typically indicates a mismatch in communication protocol or timing parameters.
Receive Error (CNC-Spindle, 30i)
A receive error occurred in communication between the CNC and the serial spindle amplifier for Series 30i. This indicates an issue with the data reception at the CNC or potentially corrupted incoming data.
Communication Error (CNC-Spindle Amplifier, 30i)
A general communication error occurred between the CNC and the serial spindle amplifier for Series 30i. This is a broad indication of communication failure, requiring further investigation into the communication link.
Communication Error (Serial Spindle Amplifiers, 30i)
A communication error occurred between serial spindle amplifiers (e.g., between an odd-numbered amplifier and even-numbered amplifier) for Series 30i. This indicates a problem in the inter-amplifier communication chain.
Communication Data Error (CNC Side, 30i Range)
A communication data error was detected on the CNC side for Series 30i (codes SP1245 to SP1247). This indicates data corruption during transfer to the CNC.
Spindle Control Software Error (30i Range 1)
An error occurred with the spindle control software for Series 30i (codes SP1976 to SP1979). This indicates an internal software issue requiring system diagnosis.
SIC-LSI Faulty (Spindle Amplifier Side, 30i Range)
The SIC-LSI (Serial Interface Converter-LSI) on the serial spindle amplifier side for Series 30i (codes SP1980 to SP1984) is faulty. This indicates a hardware error on the amplifier's communication interface.
SIC-LSI Faulty (CNC Side, 30i Range)
The SIC-LSI (Serial Interface Converter-LSI) on the CNC side for Series 30i (codes SP1985 to SP1987) is faulty. This indicates a hardware error on the CNC's serial communication interface.
Spindle Control Software Error (30i Range 2)
An error occurred with the spindle control software for Series 30i (codes SP1988 to SP1989). This indicates an internal software issue requiring system diagnosis.
Incorrect Spindle Motor Assignment (30i)
Spindle motor assignment for Series 30i is incorrect. This can lead to improper control or system conflicts due to mismatched configuration.
RAM Error (16i, 30i)
A RAM error is detected in the spindle amplifier for Series 16i or 30i. This indicates a problem with the amplifier's internal memory.