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What is the purpose of the F0.4 signal in a FANUC
Signal : F0.4 Symbol : SPL Description : Feed hold signal Detail : CNC will inform the PLC that feed hold is given by user. The F0.4 (SPL) flag is typically activated when the operator presses the feed hold button on the CNC panel to temporarily stop the machine’s motion. In response, the PLC wouldRead more
Signal : F0.4
Symbol : SPL
Description : Feed hold signal
Detail : CNC will inform the PLC that feed hold is given by user.
The F0.4 (SPL) flag is typically activated when the operator presses the feed hold button on the CNC panel to temporarily stop the machine’s motion. In response, the PLC would typically:
- Pause or hold the feed motion of the machine.
- Stop all movements related to the current machining operation (e.g., cutting, positioning).
- Allow the operator to inspect or adjust the machine settings.
- Provide the option to resume the feed or perform further actions when the operator deactivates the feed hold.
See lessWhat is the purpose of the F0.0 signal in a FANUC PLC ladder program?
Signal : F0.0 Symbol : RWD Description : Rewind signal Detail : CNC will inform the PLC that reset and rewind command is given by user. When the F0.0 (RWD) signal is activated, the PLC is expected to initiate actions that are defined for a reset and rewind operation. These actions might include: CleRead more
Signal : F0.0
Symbol : RWD
Description : Rewind signal
Detail : CNC will inform the PLC that reset and rewind command is given by user.
When the F0.0 (RWD) signal is activated, the PLC is expected to initiate actions that are defined for a reset and rewind operation. These actions might include:
- Clearing or resetting certain program variables or flags.
- Rewinding the process or machine to a predefined home position.
- Initiating a process restart or safe operation mode depending on the machine’s configuration.
See lessSP9021 Position Sensor Polarity Error Drive alarm 21
The polarity parameter setting of the position sensor is wrong. Check and correct the parameters. (Parameter No. 4000#0, 4001#4) If external encoder check timing belt near spindle
The polarity parameter setting of the position sensor is wrong.
Check and correct the parameters. (Parameter No. 4000#0, 4001#4)
If external encoder check timing belt near spindle
See lessHow do I troubleshoot the SP9020 Excess Offset Current V error in Fanuc machines?
SP9020 SSPA:20 EXCESS OFFSET CURRENT V Abnormality in an Spindle Amplifier component is detected. (The initial value for the V phase current detection circuit is abnormal.) Amplifier indicates 20 When encountering the SP9020 SSPA:20 Excess Offset Current V error message, indicating that there is anRead more
When encountering the SP9020 SSPA:20 Excess Offset Current V error message, indicating that there is an abnormality in a spindle amplifier component and that the initial value for the V phase current detection circuit is abnormal, it suggests an issue with the spindle amplifier’s ability to accurately detect and manage current in the V phase. Here’s how to troubleshoot and resolve this issue:
Steps to Troubleshoot and Resolve the SP9020 Error
- Power Cycle the CNC Machine:
- Turn off the CNC machine completely and wait for a few minutes before turning it back on. This can sometimes reset transient errors.
- Inspect Electrical Connections:
- Check all wiring and connections associated with the spindle amplifier, especially those connected to the V phase. Ensure that they are secure, clean, and free from corrosion or damage.
- Examine the Spindle Amplifier:
- Visually inspect the spindle amplifier for any signs of physical damage such as burnt components, loose solder joints, or other visible issues. If damage is detected, the amplifier may need to be replaced.
- Measure the V Phase Current:
- Using a multimeter, measure the current flowing through the V phase circuit. Compare these readings to the expected values to identify any discrepancies that could indicate a fault.
- Check the Spindle Motor:
- Inspect the spindle motor for potential issues, including short circuits, open windings, or other faults that could impact current detection in the amplifier.
- Review Configuration and Parameters:
- Verify that all parameters related to current detection in the CNC’s control settings are correctly configured. Incorrect settings could lead to abnormal readings.
- Replace the Spindle Amplifier:
- If all other checks do not resolve the issue, replacing the spindle amplifier may be necessary. Ensure to follow manufacturer guidelines for replacement.
- Consult Technical Documentation:
- Refer to the Fanuc technical manuals or service guides for specific instructions on diagnosing and addressing this error, or contact Fanuc support for further assistance.
See lessHow do I troubleshoot the SP9019 Excess Offset Current U error in Fanuc machines?
SP9019 SSPA:19 EXCESS OFFSET CURRENT U Abnormality in an Spindle Amplifier component is detected. (The initial value for the U phase current detection circuit is abnormal.) When encountering the SP9019 SSPA:19 Excess Offset Current U error message indicating that there is an abnormality in a spindleRead more
When encountering the SP9019 SSPA:19 Excess Offset Current U error message indicating that there is an abnormality in a spindle amplifier component and that the initial value for the U phase current detection circuit is abnormal, it suggests an issue with the spindle amplifier’s ability to detect and manage current properly. Here’s how to address this issue:
Steps to Troubleshoot and Resolve the Issue
- Power Cycle the Machine: Turn off the CNC machine completely, wait for a few minutes, and then turn it back on. This can sometimes reset temporary errors.
- Check Connections: Inspect all electrical connections related to the spindle amplifier, especially those connected to the U phase. Ensure that all connectors are secure, clean, and free from corrosion.
- Examine the Spindle Amplifier: Check the spindle amplifier for any visible signs of damage, such as burnt components or physical wear. If the amplifier is damaged, it may need to be replaced.
- Measure Phase Currents: Use a multimeter to measure the actual current flowing through the U phase and compare it to the expected values. An abnormal reading could indicate a fault in the amplifier or motor.
- Verify Settings and Parameters: Ensure that the machine’s parameters related to the spindle and current detection circuits are set correctly. Incorrect settings could lead to abnormal readings.
- Inspect the Motor: Check the spindle motor for any issues, such as short circuits or open windings. An abnormal motor condition can affect current detection.
- Replace the Spindle Amplifier: If all other checks are inconclusive and the error persists, replacing the spindle amplifier may be necessary to restore normal operation.
- Consult Technical Documentation or Support: Refer to the Fanuc technical manuals for specific diagnostic procedures related to the SP9019 error, or contact Fanuc support for further assistance.
See lessHow do I troubleshoot the SP9018 SUMCHECK error in the spindle alarm on Fanuc controllers?
Abnormality in an Spindle Amplifier control circuit component is detected. (Program ROM data is abnormal.) Replace the Spindle Amplifier control printed circuit board. When encountering an error stating "Abnormality in a Spindle Amplifier control circuit component is detected. (Program ROM data is aRead more
Abnormality in an Spindle Amplifier control circuit component is detected. (Program ROM data is abnormal.) Replace the Spindle Amplifier control printed circuit board.
When encountering an error stating “Abnormality in a Spindle Amplifier control circuit component is detected. (Program ROM data is abnormal.) Replace the Spindle Amplifier control printed circuit board”, it indicates a fault within the spindle amplifier’s control circuit, specifically related to the Program ROM data. Here’s how to address the issue:
Steps to Address the Issue
- Power Cycle the CNC Machine: Turn off the machine and wait for a few minutes before turning it back on. This may clear temporary errors or glitches in the system.
- Check Connections: Inspect all connectors and wiring associated with the spindle amplifier and its printed circuit board (PCB) for loose connections or damage. Ensure that everything is securely connected.
- Inspect the Environment: Ensure that the machine is operating in a clean environment. Dust, heat, or moisture can affect sensitive components and lead to data corruption.
- Backup and Document Settings: If possible, back up any important parameters or settings before proceeding with replacement. This ensures you can restore them after installing the new PCB.
- Replace the Spindle Amplifier Control PCB: If the error persists after checking connections and rebooting, the spindle amplifier control PCB may be faulty. Follow manufacturer guidelines to safely replace the PCB.
- Recalibrate and Test: After replacing the PCB, recalibrate the spindle system as necessary and run tests to ensure proper functionality.
- Consult Technical Support: If you’re uncertain about the process or if issues persist, reach out to Fanuc technical support or a qualified technician for further assistance.
See lessWhat should I check if I get an SP9017 Serial Spindle Alarm on my Fanuc controller?
Abnormality in spindle amplifier ID data is detected. Replace the Spindle Amplifier. Steps to Troubleshoot and Confirm the Cause Reboot the CNC: Power down the CNC completely, wait a few minutes, and power it back up. Sometimes, temporary system glitches cause ID reading errors that a restart can clRead more
Abnormality in spindle amplifier ID data is detected. Replace the Spindle Amplifier.
Steps to Troubleshoot and Confirm the Cause
- Reboot the CNC: Power down the CNC completely, wait a few minutes, and power it back up. Sometimes, temporary system glitches cause ID reading errors that a restart can clear.
- Inspect and Secure Connections: The communication between the CNC controller and the spindle amplifier relies on stable connections. Check all cables and connections related to the spindle amplifier to ensure they are properly seated and free of dust or corrosion.
- Verify Power Supply and Environmental Conditions: Ensure the spindle amplifier is receiving a stable power supply and that the CNC’s environment is free from excess dust, heat, or humidity, which could interfere with normal operations.
- Check for Software or Parameter Errors: In rare cases, ID data errors could be related to software or parameter issues within the controller. Ensure your machine’s software is up to date and that all parameters related to the spindle amplifier are correct.
- Replace the Spindle Amplifier: If all connections are secure and the issue persists, the spindle amplifier may have an internal fault, such as damaged circuitry or memory, which necessitates replacement to restore function.
- Consult Fanuc or CNC Technician: If you’re uncertain about the error or if replacing the amplifier is challenging, consult with Fanuc technical support or a certified CNC technician.
See less