Yaskawa CE: Yaskawa A1000 Error Code CE

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

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

Yaskawa A1000 Error Code CE