Yaskawa A1000 Error Code CE

Yaskawa PLC & VFD Minor Communication

Model: A1000 | Code: CE

Applicable Systems
GA700 GA500 A1000 V1000 J1000

Symptoms

The drive shows a warning or alarm. The digital operator displays CE, indicating a communication error. The drive has detected a communication timeout or data error on the fieldbus network.

Possible Causes

  • Fieldbus cable disconnected or damaged
  • Fieldbus communication option card failure
  • Master (PLC) stopped communicating or restarted
  • Network configuration mismatch (baud rate, address, protocol)

Troubleshooting Steps

  1. Step 1: Check the fieldbus option card status LED for fault indicators
    Option card shows a healthy status (green LED)
  2. Step 2: Inspect the fieldbus cabling between the drive and the network
    Cable is connected, not damaged, and properly terminated
  3. Step 3: Verify the drive communication parameters (address, baud rate, protocol)
    Parameters match the network master configuration
  4. Step 4: Check that the PLC or supervisory system is online and communicating
    PLC is running and sending data to the drive

How to Reset

To reset: 1) Restore communication (fix cables, restart PLC, fix configuration). 2) The alarm should clear automatically when communication resumes. 3) If not, press RESET. Caution: Configure the drive's communication loss action (parameter) to define safe behavior during communication interruptions.

Common Replacement Parts

  • JZ-OP01: Yaskawa communication option card (Match the card to your fieldbus protocol (Modbus, EtherNet/IP, PROFINET))

Frequently Asked Questions

  • Q: What fieldbus protocols do Yaskawa drives support?

    Yaskawa GA700 and A1000 drives support Modbus RTU (built-in), and via option cards: EtherNet/IP, PROFINET, EtherCAT, DeviceNet, and CANopen. Check the option card catalog for supported protocols.

  • Q: How do I configure Modbus RTU on a Yaskawa drive?

    Set the drive's communication parameters (address, baud rate, parity, stop bits) in the H5 parameter group. Connect via RS-485 to the Modbus network. The master PLC must use the same settings and address the drive by its node number.

Related Yaskawa Fault Codes

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Source: Yaskawa A1000 Technical Manual, 2023

Category: PLC & VFD