E2076

Measuring encoder: encoder signals disturbed

Bosch Rexroth · IndraDrive C Drive Controllers

What does E2076 mean?

Signals from the measuring encoder are intermittent, noisy, or outside expected parameters, indicating a communication issue or a faulty encoder. This can lead to inaccurate position/velocity feedback and control instability, especially in systems with direct measurement feedback.

Common Causes

  • Loose, damaged, or improperly shielded cabling for the measuring encoder.
  • Electrical noise or interference affecting the measuring encoder signals.
  • Faulty measuring encoder hardware or sensor components.
  • Incorrect wiring or termination of the measuring encoder signals.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Inspect the cabling for the measuring encoder for physical damage, proper shielding, and secure connections at both the encoder and the drive.

  2. 2

    Check for sources of electrical noise near the encoder cable, such as power cables, contactors, or VFDs, and ensure proper separation and grounding.

  3. 3

    Verify the measuring encoder's power supply voltage at the encoder terminals.

  4. 4

    If possible, perform an encoder diagnostic test through the drive's interface to check signal integrity. Consider replacing the measuring encoder if signals remain disturbed.

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Verified technical data. Last updated: March 2026

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Source: Bosch Rexroth IndraDrive C Drive Controllers