Allen Bradley Kinetix 6500 Drive Fault Codes List (2026)

Allen Bradley Kinetix 6500 Drive Fault Codes List (2026) – Complete guide to Allen Bradley Kinetix 6500 fault codes for 2026. Troubleshoot EtherNet/IP connection errors, IP address scrolling, CIP Safety faults, and perform diagnostics via Studio 5000.

The Allen Bradley Kinetix 6500 is a modular servo drive that brings Integrated Motion on EtherNet/IP (CIP Motion) to the proven 2094 power rail architecture. It consists of a control module plugged into a standard power module. Because it relies on Ethernet rather than fiber optics (Sercos), the troubleshooting process in 2026 is distinct from the older Kinetix 6000, particularly regarding network configuration and safety.

Kinetix 6500 Fault Codes Reference Table

Below is the complete list of error codes. The 7-segment display typically scrolls the code. Note that “E-Codes” usually refer to the power structure, while scrolling text often refers to network status.

Fault Code and MeaningCause and Remedy
FLT S02…MTR COMMUTATION
Illegal Hall State

Cause:

State of Hall feedback inputs is incorrect due to improper connections.



Remedy:

  • Check Hall wiring at motor feedback (MF) connector.

  • Check 5V power supply to the encoder.


FLT S03…MTR OVERSPEED FL
Motor Overspeed

Cause:

Motor speed has exceeded 125% of maximum rated speed.



Remedy:

  • Check cables for noise.


FLT S04…MTR OVERSPEED UL
(Kinetix 6500 only)
Motor Overspeed

Cause:

Motor speed has exceeded user velocity limits.



Remedy:

  • Check tuning.


FLT S05…MTR OVERTEMP FL nn
Motor Overtemperature

Cause:

High motor ambient temperature and/or Excessive Current. The nn sub-code is defined as follows:

01: Motor Thermostat or Thermistor (Motor wiring error).

02: Encoder Temperature Sensor (Incorrect motor selection).



Remedy:

  • Operate within (not above) the continuous torque rating for the ambient temperature.

  • Lower ambient temperature or increase motor cooling.

  • If 01: Check motor wiring at motor feedback (MF) connector.

  • If 02: Verify the proper motor has been selected.


FLT S06…MTR OVERTEMP UL nn
(Kinetix 6500 only)
Motor Overtemperature

Cause:

High motor ambient temperature and/or Excessive Current (User Limit).

01: Motor Thermostat or Thermistor.

02: Encoder Temperature Sensor.



Remedy:

  • Operate within (not above) the continuous torque rating for the ambient temperature.

  • Lower ambient temperature or increase motor cooling.

  • Check motor wiring at motor feedback (MF) connector.

  • Verify the proper motor has been selected.


FLT S07…MTR OVERLOAD FL
Motor Thermal Protection

Cause:

The machine duty cycle requires an RMS current exceeding the continuous rating of the motor. (Exceeded 110% of rating).



Remedy:

  • Change the command profile to reduce speed or increase time.


FLT S08…MTR OVERLOAD UL
(Kinetix 6500 only)
Motor Thermal Protection

Cause:

The machine duty cycle requires an RMS current exceeding the continuous rating of the motor. (Exceeded user programmable limit).



Remedy:

  • Change the command profile to reduce speed or increase time.


FLT S10…INV OVERCURRENT
IPM Fault

Cause:

The IPM fault output indicates that the power transistors were turned off. Potential causes:

– Motor cables shorted.

– Motor winding shorted internally.

– The drive temperature is too high.

– Operation above continuous power/environmental ratings.

– The drive has a short circuit, overcurrent, or failed component.



Remedy:

  • Verify continuity of motor power cable and connector.

  • Disconnect motor power cables from the motor. If the motor is difficult to turn by hand, it may need to be replaced.

  • Check for clogged vents or defective fan.

  • Make sure cooling is not restricted by insufficient space around the unit.

  • Verify ambient temperature is not too high.

  • Operate within the continuous power rating. Reduce acceleration/deceleration rates.

  • Remove all power and motor connections, and perform a continuity check from the DC bus to the U, V, and W motor outputs.


FLT S11…INV OVERTEMP FL
Inverter Overtemperature

Cause:

Inverter thermal switch tripped.

– IAM or AM power module fan failed.

– The cabinet ambient temperature is above rating.

– The machine duty cycle requires an RMS current exceeding the continuous rating of the inverter.

– The airflow access to the drive system is limited or blocked.



Remedy:

  • Replace the failed module.

  • Check the cabinet temperature.

  • Change the command profile to reduce speed or increase time.

  • Check airflow and re-route cables away from the drive system.


FLT S13…INV OVERLOAD FL
Inverter Thermal Protection

Cause:

The machine duty cycle requires an RMS current exceeding the continuous rating of the inverter (Temperature exceeded 110% of rating).



Remedy:

  • Change the command profile to reduce speed or increase time.


FLT S14…INV OVERLOAD UL
(Kinetix 6500 only)
Inverter Thermal Protection

Cause:

The thermal model for the power transistors indicates that the temperature has exceeded the user-programmable limit.



Remedy:

  • Change the command profile to reduce speed or increase time.


FLT S16…GROUND CURRENT
Ground Fault

Cause:

Excessive ground current was detected in the converter.

– Wiring error.

– Motor internal ground short.

– Internal malfunction.



Remedy:

  • Check motor power wiring.

  • Check input power wiring.

  • Replace motor.

  • Disconnect motor power cable from drive and enable drive with current limit set to 0. If fault clears, then a wiring error or motor internal anomaly exists. If fault remains, call your sales representative.


FLT S18…CONV OVERTEMP FL
Converter Overtemperature

Cause:

Converter thermal switch tripped. Excessive heat exists in the power circuitry.



Remedy:

  • Reduce acceleration rates.

  • Reduce duty cycle (ON/OFF) of commanded motion.

  • Increase time permitted for motion.

  • Use larger IAM power module.

  • Check for clogged vents or defective fan.

  • Make sure cooling is not restricted by insufficient space around the unit.


FLT S20…CONV OVERLOAD FL
Converter Thermal Protection

Cause:

Excessive current is being drawn by the power circuitry (exceeded rating).



Remedy:

  • Reduce acceleration rates.

  • Reduce duty cycle (ON/OFF) of commanded motion.

  • Increase time permitted for motion.

  • Use larger IAM power module.


FLT S21…CONV OVERLOAD UL
(Kinetix 6500 only)
Converter Thermal Protection

Cause:

Excessive current is being drawn by the power circuitry (exceeded user-programmable limit).



Remedy:

  • Reduce acceleration rates.

  • Reduce duty cycle (ON/OFF) of commanded motion.

  • Increase time permitted for motion.

  • Use larger IAM power module.


FLT S22…AC POWER LOSS
AC Power Loss

Cause:

Axis was enabled when main (three-phase) power was removed.



Remedy:

  • Disable axis before removing power.


FLT S23…AC PHASE LOSS nn
AC Phase Loss

Cause:

Faulty AC line control equipment. Some, but not all AC input phases are detected as absent.

01: L1 is missing.

02: L2 is missing.

03: L3 is missing.



Remedy:

  • Check input AC voltage on all phases.


FLT S25…PRECHARGE FAILURE
Pre-charge Failure

Cause:

– Low AC input voltage.

– Internal malfunction.



Remedy:

  • Check input AC voltage on all phases.

  • Call your sales representative.


FLT S29…SHUNT OVERLOAD FL
Shunt Thermal Protection

Cause:

The thermal model for the shunt circuitry indicates that the temperature has exceeded its rating.



Remedy:

  • Use a properly sized shunt or modify duty cycle of the application.

  • System uses internal shunt and requires external shunt for additional capacity.


FLT S30…SHUNT OVERLOAD UL
(Kinetix 6500 only)
Shunt Thermal Protection

Cause:

The thermal model for the shunt circuitry indicates that the temperature has exceeded a user-programmable limit.



Remedy:

  • Use a properly sized shunt or modify duty cycle of the application.

  • System uses internal shunt and requires external shunt for additional capacity.


FLT S31…SHUNT MODULE
Shunt Module Fault

Cause:

– Over-temperature fault indicator on Bulletin 2094 shunt module is steady red.

– Shunt-fault indicator on Bulletin 2094 shunt module is steady red.

– Bulletin 2094 shunt module is missing from power rail.



Remedy:

  • Refer to Temperature Fault Status Indicator in manual.

  • Refer to Shunt Fault Status Indicator in manual.

  • Install missing module on power rail.

  • Fill empty slot with slot-filler module.


FLT S33…BUS UNDERVOLT FL
Bus Undervoltage

Cause:

DC bus voltage for 460V system is below 275V.



Remedy:

  • Verify voltage level of the incoming AC power.

  • Check AC power source for glitches or line drop.

  • Install an uninterruptible power supply (UPS) on your AC input.

  • Disable follower axis before removing power.


FLT S34…BUS UNDERVOLT UL
(Kinetix 6500 only)
Bus Undervoltage

Cause:

The DC bus voltage is measured below a user limit when the DC bus was expected to be charged.



Remedy:

  • Verify voltage level of the incoming AC power.

  • Check AC power source for glitches or line drop.


FLT S35…BUS OVERVOLT FL
Bus Overvoltage

Cause:

– Excessive regeneration of power.

– DC bus voltage for 460V system is over 820V.



Remedy:

  • Change the deceleration or motion profile.

  • Use a larger system (motor and drive).

  • Install shunt module.


FLT S38…FUSE BLOWN
Blown Fuse (Bus Loss)

Cause:

A blown fuse was detected in the power structure.



Remedy:

  • Call your Rockwell Automation sales representative to return module for repair.


FLT S41…MTR AQB STATE FL
Motor Feedback State Error

Cause:

The number of illegal state transitions of the AQB encoder signals has exceeded a factory limit.

The motor feedback wiring is open, shorted, or missing.



Remedy:

  • Use shielded cables with twisted pair wires.

  • Route the feedback away from potential noise sources.

  • Check the system grounds.

  • Replace the motor/encoder.


FLT S41…AUX AQB STATE FL
Aux Feedback State Error

Cause:

The auxiliary feedback wiring is open, shorted, or missing.



Remedy:

  • Use shielded cables with twisted pair wires.

  • Route the feedback away from potential noise sources.

  • Check the system grounds.

  • Replace the motor/encoder.


FLT S43…MTR FDBK LOSS FL
Feedback Loss

Cause:

The motor feedback wiring is open, shorted, or missing.



Remedy:

  • Check motor encoder wiring.

  • Run Hookup test in the Logix Designer application.


FLT S45…MTR FDBK COMM FL
Feedback Serial Comms

Cause:

Communication was not established with an intelligent encoder.



Remedy:

  • Verify motor selection.

  • Verify the motor supports automatic identification.

  • Verify motor encoder wiring.


FLT S47…MTR ENC SELF TEST nn
Feedback Self Test

Cause:

The Hiperface feedback device has detected an internal error. Sub-codes include:

01: Alignment Data, 02: Angular Offset, 06: Checksum Error, 29: Transmitter Current Critical, 30: Encoder Temperature Critical, etc.



Remedy:

  • Check motor feedback cable for proper connectivity and continuity.

  • Check motor phasing (U, V, W).

  • Review Electrical Noise Reduction.

  • Cycle control power.

  • Reduce shock and vibration to motor.

  • Upgrade firmware (Revision 2.045+ for 6200, 2.010+ for 6500).

  • Replace motor if fault continues.


FLT S50…POS HW OTRAVEL
Hardware Overtravel – Positive

Cause:

Dedicated overtravel input is inactive. Axis moved beyond the physical travel limits in the positive direction.



Remedy:

  • Check wiring.

  • Verify motion profile.

  • Verify axis configuration in software.


FLT S51…NEG HW OTRAVEL
Hardware Overtravel – Negative

Cause:

Dedicated overtravel input is inactive. Axis moved beyond the physical travel limits in the negative direction.



Remedy:

  • Check wiring.

  • Verify motion profile.

  • Verify axis configuration in software.


FLT S52…POS SW OTRAVEL
(Kinetix 6200 only)
Software Overtravel – Positive

Cause:

Axis position exceeded maximum software setting.



Remedy:

  • Verify motion profile.

  • Verify overtravel settings are appropriate.


FLT S54…POSN ERROR
Excessive Position Error

Cause:

Position error limit was exceeded due to:

– Improperly sized drive or motor.

– Mechanical system out of specifications.



Remedy:

  • Increase the feed forward gain.

  • Increase following error limit or time.

  • Check position loop tuning.

  • Verify sizing of system.

  • Verify mechanical integrity of system within specification limits.

  • Check motor power wiring.


FLT S55…VEL ERROR nn
Excessive Velocity Error

Cause:

The velocity error has exceeded a limit for a period of time.

– Improperly sized drive or motor.

– Mechanical system out of specifications.



Remedy:

  • Increase velocity error limit or time.

  • Check velocity loop tuning.

  • Verify sizing of system.

  • Verify mechanical integrity.

  • Reduce acceleration.


FLT S56…OVERTORQUE
(Kinetix 6500 only)
Overtorque Limit

Cause:

Motor torque has exceeded a user-programmable setting.

– Overly aggressive motion profile.

– Mechanical binding.

– Mechanical system out of specifications.



Remedy:

  • Verify motion profile.

  • Verify Overtorque settings are appropriate.

  • Verify sizing of system.

  • Verify torque offset.

  • Verify mechanical integrity.


FLT S60…ILLEGAL MODE
Illegal Control mode

Cause:

Axis 1 was configured for dual feedback or load feedback with Axis 2 also configured for Feedback Only operation, but with different feedback attribute values.



Remedy:

  • Use Aux Feedback for one axis only.

  • Verify Axis 1 and Axis 2 have identical feedback configuration for aux feedback.


FLT S61…ENABLE INPUT
Drive Enable Input

Cause:

– An attempt was made to enable the axis through software while the Drive Enable hardware input was inactive.

– The Drive Enable input transitioned from active to inactive while the axis was enabled.



Remedy:

  • Disable the Drive Enable Input fault.

  • Verify that Drive Enable hardware input is active whenever the drive is enabled through software.


FLT S62…CONTROLLER
(Kinetix 6500 only)
Controller Initiated Exception

Cause:

User configured software overtravel. The controller has requested the drive to generate an exception.



Remedy:

  • Move axis out of soft overtravel range.

  • Clear soft overtravel fault.

  • Check soft overtravel configuration.

  • Consult controller documentation.


FLT M01…SELF SENSING

Self-sensing Startup Fault: The self-sensing commutation start-up algorithm failed.

Cause: Extremely light or heavy load on the motor. Mechanical obstruction.


Remedy:

  • Clear faults and re-try.

  • Reduce friction.

  • Check for mechanical obstruction.


FLT M02…MOTOR VOLTAGE

Motor Voltage Mismatch: Motor voltage incompatible with drive voltage.

Cause:

  • Check the Logix Designer configuration.

  • Wrong motor connected to drive.




Remedy:

  • Correct the Logix Designer configuration.

  • Connect appropriate motor to drive.


FLT M04…MTR FDBK FILTER nn

Motor Feedback Filter: Excessive levels of noise have been detected by the digital feedback filter.
01: Sine or A channel
02: Cosine or B channel

Cause: The motor feedback wiring is open, shorted, or missing.


Remedy:

  • Use shielded cables with twisted pair wires.

  • Route the feedback away from potential noise sources.

  • Check the system grounds.

  • Replace the motor/encoder.


FLT M04…AUX FDBK FILTER nn

Aux Feedback Filter

Cause: The auxiliary feedback wiring is open, shorted, or missing.


Remedy: See remedy for Motor Feedback Filter above.
FLT M05…MTR FDBK BATT LOSS

Motor Encoder Battery Loss: Battery voltage low; absolute position lost.

Cause: Weak battery or poor battery connection.


Remedy:

  • Replace battery.

  • Check battery connection.


FLT M06…MTR FDBK BATT LOW

Motor Encoder Battery Caution: Battery voltage below caution level.

Cause: Weak battery.


Remedy: Replace battery.
FLT M07…MTR INCR LOSS

Motor Incremental Position Loss: Incremental position vs absolute position out of tolerance.

Cause: The motor feedback wiring is open, shorted, or missing.


Remedy:

  • Check motor encoder wiring.

  • Run Hookup test in the Logix Designer application.


FLT M07…AUX INCR LOSS

Aux Incremental Position Loss

Cause: The auxiliary feedback wiring is open, shorted, or missing.


Remedy: Check auxiliary encoder wiring.
FLT M10…CTRL OVERTEMP FL

Control Module Overtemperature: Temperature exceeded limit.

Cause: Cabinet ambient temperature has exceeded 50 °C (122 °F).


Remedy: Reduce cabinet ambient temperature.
FLT M11…CTRL OVERTEMP UL

Control Module Overtemperature: Temperature exceeded user limit.

Cause: Cabinet ambient temperature has exceeded user limit.


Remedy: Reduce cabinet ambient temperature.
FLT M12…POWER CYCLE FL

Pre-charge Overload: Pre-charge circuit exceeded limit due to excessive power cycling.

Cause: The DC bus power has been cycled too frequently.


Remedy: Limit power cycles to two per minute maximum.
FLT M13…POWER CYCLE UL

Pre-charge Overload: Approaching user-defined limit due to excessive power cycling.

Cause: The DC bus power has been cycled too frequently.


Remedy: Limit power cycles to two per minute maximum.
FLT M14…CURR FDBK OFFSET

Excessive Current Feedback Offset.

Cause: Current feedback hardware fault detected.


Remedy: Replace the power module.
FLT M15…REGEN PWR SUPPLY

Regenerative Power Supply Fault.

Cause: Regen unit faulted. Hardware Regeneration OK input deactivated while drive enabled.


Remedy: Reset faulted regen unit.
FLT M19…DC BUS LIMIT

DC Bus Limited Position Error.

Cause: Excessive load drawn from DC bus by application.


Remedy:

  • Modify application to reduce loading on DC Bus.

  • Increase converter size to provide additional bus capacity.


FLT M25…COMMON BUS

DC Common Bus Fault.

Cause: Improper configuration or connection. AC Power detected while configured for Common Bus Follower.


Remedy: Check IAM power configuration and wire accordingly.
FLT M26…RUNTIME ERROR

Runtime Drive Error.

Cause: The drive firmware encountered an unrecoverable runtime error.


Remedy:

  • Cycle control power.

  • Replace Module.


FLT M27…BACKPLANE COMM

Backplane COM: Communication problem detected.

Cause:

  • Electrical Noise.

  • Poor module connection.

  • Faulty module.




Remedy:

  • Cycle control power.

  • With power off, reseat power module in rail and control module in power module.

  • Replace module.


FLT M28…SAFETY COMM

Internal Safety Communication.

Cause: Communication with the safety hardware within the drive malfunctioned.


Remedy:

  • Cycle control power.

  • Replace module.


FLT M64…SENSOR ASSIGNMENT

No Quick View message.

Cause:

  • Home/Registration input function requested but not assigned.

  • Multiple inputs assigned same function.




Remedy: Assign proper function to the four available digital inputs.
FLT M68…IPIM

IPIM Module Fault.

Cause: A fault has occurred in one or more IPIM modules on the power rail.


Remedy: Refer to troubleshooting chapter in Kinetix 6000M User Manual (2094-UM003).
INIT FLT S03…NVMEM CHKSUM

User Non-volatile Memory Checksum.

Cause: Non-volatile memory is corrupt due to control board software error.


Remedy:

  • Cycle power or reset the drive.

  • Contact Rockwell Automation to return module for repair.


INIT FLT M01…ENCODER DATA

Smart Encoder Data Corruption Fault.

Cause: Faulty intelligent encoder.


Remedy:

  • Cycle power or reset the drive.

  • Replace motor if faulting continues.


INIT FLT M02…MTR DATA RANGE nn

Motor Data Range Error.
See manual for specific sub-code (nn) definitions (01-16).

Cause: Faulty intelligent encoder or incorrect motor file.


Remedy:

  • Cycle power or reset the drive.

  • Check validity of the motion database.

  • Replace motor if faulting continues.


INIT FLT M03…MTR ENC STARTUP

Motor Feedback Communication Startup.

Cause:

  • Incorrect motor selected or connected.

  • Faulty wiring.




Remedy:

  • Check motor selection.

  • Check motor encoder wiring.


INIT FLT M03…AUX ENC STARTUP

Auxiliary Feedback Communication Startup.

Cause:

  • Incorrect motor selected or connected.

  • Faulty wiring.




Remedy:

  • Check motor selection.

  • Check motor encoder wiring.


INIT FLT M04…MTR ABS SPEED

Motor Absolute Encoder Overspeed Fault.

Cause: High motor speed while power was off.


Remedy: Clear faults and re-home.
INIT FLT M05…MTR ABS TRAVEL

Motor Absolute Encoder Power-off Travel.

Cause: Large travel distance while power was off.


Remedy: Clear faults and re-home.
INIT FLT M06…MTR ABS STARTUP

Motor Absolute Startup Speed.

Cause: Mechanical movement of machine causing excessive rotation of motor during powerup.


Remedy: Allow machine motion to stop before powerup.
INIT FLT M07…COMMUTATION OFFSET

Uninitialized Commutation Offset.

Cause: Third party motors do not contain Rockwell Automation motor data.


Remedy: Run Commutation Test from the Logix Designer application.
INIT FLT M12…INVALID KCL REV

Invalid KCL revision.

Cause: The FPGA image is incompatible with hardware operation.


Remedy:

  • Flash control module with correct firmware.

  • Replace module.


INIT FLT M13…INVALID BSP REV

Invalid BSP revision.

Cause: The board support package is incompatible with hardware operation.


Remedy:

  • Flash control module with correct firmware.

  • Replace module.


INIT FLT M14…SAFETY FIRMWARE

Invalid Safety Firmware.

Cause: Loaded Safety firmware is not a valid revision for the drive firmware.


Remedy: Flash control module with correct revision of safety firmware.
INIT FLT M19…VOLTAGE MISMATCH

Voltage Mismatch on Power Rail.

Cause: 230V and 460V modules have been installed on the same power rail.


Remedy: Replace the mismatched AM module with one that matches the IAM module.
INIT FLT M20…UNKNOWN MODULE

Unknown Axis on Backplane.

Cause: Faulty Module.


Remedy:

  • Recycle control power.

  • Replace module.


INIT FLT M21…FACTORY CFG

Factory Configuration Invalid.

Cause: Defective memory in module.


Remedy: Replace defective module.
INIT FLT M22…ILLEGAL ADDRESS

Illegal Node Switch Setting.

Cause: IAM node switch set such that an AM node address is greater than 254.


Remedy: Select IAM node address that permits all AM node addresses to be less than 254.
INIT FLT M23…SERIES MISMATCH

Series Mismatch on Power Rail.

Cause: Sercos and EtherNet/IP control modules exist on the same power rail.


Remedy: Replace the mismatched control module.
INIT FLT M24…OPEN SLOT

Open Power Rail Slot.

Cause: Missing module or bent pins on module.


Remedy:

  • Check control pin on back of module.

  • Install slot filler module in open slot.


INIT FLT M32…MTR KEYING nn

Motor Keying Fault.

Cause: Incorrect motor selected from motor database.


Remedy: Verify motor selection in Axis Properties configuration.
INIT FLT M33…ENABLE UNASSIGNED

Enable Input Not Assigned.

Cause: Enable function requested but not assigned to a digital input.


Remedy: Assign an available digital input as Enable.
INIT FLT M34…OTRAVEL UNASSIGNED

Overtravel Input Not Assigned.

Cause: Overtravel function requested but not assigned to a digital input.


Remedy: Assign an available digital input for the desired overtravel function.
INIT FLT M35…NAND FLASH nn

Storage failure.

Cause: Faulty memory component.


Remedy:

  • Recycle control power or reset the drive.

  • Replace control module if problem persists.


NODE FLT 01…LATE CTRL UPDATE

Control Update Fault.

Cause:

  • Excessive network traffic.

  • Noisy environment.




Remedy:

  • Remove unnecessary network devices.

  • Change network topology.

  • Segregate signal wiring from power wiring.

  • Use shielded cables / Add snubbers.


NODE FLT 02…PROC WATCHDOG

Processor Watchdog Fault.

Cause: The watchdog circuit monitoring processor operation detected a problem.


Remedy:

  • Recycle control power or reset the drive.

  • Replace control module if problem persists.


NODE FLT 03…HARDWARE nn

Hardware Fault.
01: Invalid slot ID
02: Cannot read slot ID
03/04: Memory failures

Cause:

  • Faulty power rail or power module.

  • Faulty memory component.




Remedy:

  • Recycle control power or reset the drive.

  • Replace power module or control module if problem persists.


NODE FLT 04…DATA FORMAT ERROR

Data Format Error.

Cause: Faulty memory component.


Remedy:

  • Recycle control power or reset the drive.

  • Replace control module if problem persists.


NODE FLT 06…LOST CTRL CONN

Lost Controller Connection.

Cause:

  • Faulty Ethernet cable or disconnected.

  • Controller lost power.




Remedy:

  • Check Ethernet connection.

  • Check controller operation.


NODE FLT 08…LOGIC WATCHDOG

Custom Logic Update Timeout.

Cause: Faulty control module.


Remedy:

  • Recycle control power or reset the drive.

  • Replace control module if problem persists.


NODE FLT 09…IP ADDRESS

Duplicate IP Address.

Cause: Incorrect node switch setting (Identical IP on subnet).


Remedy: Select a node address not already in use on the network.
NODE FLT 128…DRAM TEST

DRAM Test Fault.

Cause: Faulty memory component.


Remedy:

  • Recycle control power or reset the drive.

  • Replace Control module if problem persists.


NODE FLT 129…FPGA CONFIG

FPGA Configuration Fault.

Cause: Faulty component.


Remedy: Replace module.
NODE FLT 133…SERCOS ADDRESS

Duplicate Sercos Node Address.

Cause: This axis and one or more other axes have identical sercos addresses.


Remedy: Check Node Switch configuration and adjust for no overlap.
NODE FLT 139…SERCOS RING

Sercos Ring Fault.

Cause: Loose or damaged sercos cable.


Remedy: Check that fiber-optic cable is present and connected properly.
NODE ALARM 01…CTRL UPDATE

Control Connection Update Alarm.

Cause:

  • Excessive network traffic.

  • Noisy environment.




Remedy:

  • Remove unnecessary network devices.

  • Use shielded cables / Add snubbers.


NODE ALARM 05…CLOCK SYNC

Clock Jitter Alarm.

Cause:

  • Switched to grandmaster clock of different frequency.

  • Lost connection to grandmaster clock.




Remedy:

  • Drive auto-corrects upon time synchronization.

  • Restore network connections.


NODE ALARM 128…NODE SWITCH

No Quick View message.

Cause: Node Switches adjusted after powerup.


Remedy: Return node switches to power-up setting.
INHIBIT S01…ENABLE INPUT

Axis Enable Input Fault – Start Inhibit.

Cause: Enable input is inactive while axis is in Starting/Running/Testing/Hold state.


Remedy:

  • Confirm that the digital input assigned to Enable is active.

  • Check module enable input wiring.

  • Check digital input assignments.


INHIBIT S02…MOTOR NOT CONFIGURED

Motor Not Configured.

Cause: The motor has not been properly configured for use.


Remedy: Verify motor configuration in the Logix Designer application.
INHIBIT S03…FEEDBACK NOT CONFIGURED

Feedback Not Configured.

Cause: The feedback has not been properly configured for use.


Remedy: Verify feedback configuration in the Logix Designer application.
INHIBIT S04…COMMUTATION NOT CONFIGURED

Commutation Not Configured – Standard Start Inhibit.

Cause:

  • PM motor commutation not configured.

  • Commutation test offset differs from controller value by 15° or more.




Remedy:

  • Verify proper motor feedback commutation alignment.

  • Run commutation test.

  • Download project or power-cycle drive.


INHIBIT M05…SAFE TORQUE OFF

Start Inhibit – Safe Torque Off.

Cause: The safety function has disabled the power structure.


Remedy:

  • Check safety input wiring.

  • Check state of safety devices.


INHIBIT M07…SAFETY NOT CONFIGURED

Start Inhibit – Safety Not Configured Inhibit.

Cause: Drive firmware was uploaded.


Remedy: Reapply safety configuration signature by using Apply File from the Safety Main web page.
ALARM S52…POS SW OTRAVEL

Software Overtravel – Positive.

Cause: Axis position exceeded maximum software setting.


Remedy:

  • Verify motion profile.

  • Verify overtravel settings are appropriate.


ALARM S53…NEG SW OTRAVEL

Software Overtravel – Negative.

Cause: Axis position exceeded maximum software setting.


Remedy:

  • Verify motion profile.

  • Verify overtravel settings are appropriate.


ALARM M13…POWER CYCLE UL

Pre-charge Overload.

Cause: The DC bus power has been cycled too frequently.


Remedy: Limit power cycles to two per minute maximum.

How to Read Kinetix 6500 Faults

Diagnosing the Kinetix 6500 involves checking the network status and the axis properties in the software. Here is the standard workflow for 2026:

  • The Scrolling Display: The display on the control module is your first indicator.
    • Scrolling IP Address: If the drive scrolls an IP (e.g., 192.168…), it is communicating on the network but may not be “owned” by a PLC yet.
    • Display “Standby”: The drive is owned and ready.
    • Faults: “E” codes (Hardware) or “FLT” (Motion/Network) will scroll.
  • Studio 5000 Logix Designer: As a CIP Motion drive, detailed diagnostics are found in the Controller Organizer.
    • Right-click the Axis and select Properties > Faults & Alarms.
    • Check the Module Info tab for the Kinetix 6500 module in the I/O tree to see if there is an “Electronic Keying” mismatch or “Connection Timeout.”
  • Web Server: Type the IP address scrolling on the display into a web browser. The internal web page provides a comprehensive “Fault Log” and diagnostic history without needing to go online with the PLC.

Frequently Asked Questions (FAQ)

Q: Can I upgrade a Kinetix 6000 to a 6500?

A: Yes, this is a common retrofit. Since they share the same 2094 Power Rail and IAM/AM power modules, you can often remove the Kinetix 6000 (Sercos) control module from the front of the drive and snap in a Kinetix 6500 (EtherNet/IP) control module. You will then need to rewrite the PLC logic from Sercos Motion to CIP Motion.

Q: How do I set the IP Address on a Kinetix 6500?

A:

  • Rotary Switches: Located behind the small door. Set to hundreds/tens/ones.
    • 001-254: Sets the last octet of 192.168.1.xxx.
    • 000: Enables “Admin Mode” or DHCP/BOOTP (Software assignment).
  • If the display scrolls “0.0.0.0”, the drive is waiting for a DHCP server to assign an address.

Q: What is the “Safety Reset” procedure?

A: The Kinetix 6500 supports CIP Safety (Networked STO and Safe Speed). If a safety fault occurs (e.g., Safe Speed Exceeded):

  • A standard “Motion Axis Fault Reset” (MAFR) will not clear it.
  • You must trigger a Safety Reset instruction in the Safety Task of your GuardLogix controller to acknowledge the error before the drive will run again.