Mitsubishi FR-A800 Error Code E.OSd

Mitsubishi PLC & VFD Major Motor

Model: FR-A800 | Code: E.OSd

Applicable Systems
MELSEC FX3U MELSEC FX5U FR-A800 FR-A700 MR-J4 iQ-R Motion Controller (R32MTCPU/R16MTCPU)

Symptoms

Speed deviation too large: actual speed differs from setpoint.

Possible Causes

  • Load too high
  • Speed controller tuning
  • Encoder feedback fault

Troubleshooting Steps

  1. Step 1: Check load torque
    Torque within capability
  2. Step 2: Tune speed controller
    Controller stable
  3. Step 3: Verify encoder feedback
    Signal accurate

How to Reset

Reset via parameter unit after speed deviation is corrected.

Related Mitsubishi Fault Codes

Source: Mitsubishi FR-A800 Instruction Manual, Mitsubishi Electric

Category: PLC & VFD