Yaskawa GA700 Error Code bUS

Yaskawa PLC & VFD Major Communication

Model: GA700 | Code: bUS

Applicable Systems
GA700 GA500 A1000 V1000 J1000

Symptoms

Option communication fault: option card communication error.

Possible Causes

  • Option card communication cable fault
  • Option card hardware failure
  • Protocol mismatch

Troubleshooting Steps

  1. Step 1: Check option card communication cable
    Cable intact and connected
  2. Step 2: Verify option card hardware
    Card functional
  3. Step 3: Verify protocol settings
    Settings match

How to Reset

Reset via digital operator after communication is restored.

Related Yaskawa Fault Codes

Source: Yaskawa GA700 Technical Manual, Yaskawa Electric

Category: PLC & VFD