3050H

Safety parameter error

Mitsubishi Electric · MELSEC iQ-R I/O Module

What does 3050H mean?

An error related to safety parameters was detected during system startup. This usually points to an unsuccessful or corrupted write operation of the safety parameters to the module, which is critical for safety-related functions.

Common Causes

  • A failure occurred during the process of writing safety parameters to the module.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Re-write the safety parameters to the module using GX Works3 software to ensure correct configuration.

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Verified technical data. Last updated: March 2026

Related Faults

Source: Mitsubishi Electric MELSEC iQ-R I/O Module