0071

CCr (System failure)

Lenze · 9300 Servo Controller

What does 0071 mean?

A system failure has occurred, likely due to strong interference injection on control cables or ground/earth loops in the wiring. This indicates an electrical noise or grounding issue affecting the controller's stability.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Verify the PE (Protective Earth) connection.

  2. 4

    Deenergise the device completely (disconnect 24 V supply, discharge DC bus) after troubleshooting is complete.

Source: Lenze 9300 Servo Controller
Open Manual (Page 457)