F634

Emergency-Stop

Indramat · DIAX 04

What does F634 mean?

The DIAX04 SSE-03VRS drive has received an Emergency-Stop command, leading to an immediate and safe shutdown of the controlled axis. This fault is triggered by the activation of a safety-rated E-Stop circuit, which is critical for preventing injury or damage in hazardous situations. This typically implies an external E-Stop input.

Common Causes

  • An external Emergency-Stop button was pressed or activated by an operator.
  • A safety light curtain, safety gate, or other safety device connected to the DIAX04 SSE-03VRS safety input was triggered.
  • Fault in the external safety circuit (e.g., wiring short, sensor failure) that falsely activated the E-Stop input.
  • Incorrect wiring or configuration of the E-Stop input to the DIAX04 SSE-03VRS drive.
  • Internal fault within the DIAX04 SSE-03VRS drive's safety input monitoring system.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Identify and reset all activated Emergency-Stop buttons and external safety devices in the system.

  2. 2

    Inspect the entire E-Stop safety circuit, including wiring, buttons, and safety relays, for damage, loose connections, or incorrect operation.

  3. 3

    Verify the status of the E-Stop input on the DIAX04 SSE-03VRS drive through its diagnostics to ensure the signal is clear.

  4. 4

    Ensure the E-Stop wiring connected to the DIAX04 SSE-03VRS is correctly terminated and free from shorts or open circuits.

  5. 5

    If the E-Stop was not intentionally activated, systematically test each component of the external safety chain to isolate the faulty component or wiring section.

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Verified technical data. Last updated: March 2026

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