Zeror.ai Error Codes Siemens F40851

Siemens F40851

Brand: SiemensModel: SINAMICS G120 CU250S2Error code: F40851

What the Fault Means

Fault: CX32 DRIVE-CLiQ (CU): Sign-of-life missing

Likely causes

  • A DRIVE-CLiQ communications error has occurred from the controller extension involved to the Control Unit
  • The DRIVE-CLiQ component did not set the sign-of-life to the Control Unit
  • Fault cause: 10 (= 0A hex): The sign-of-life bit in the receive telegram is not set
  • Note regarding the message value: The individual information is coded as follows in the message value (r0949/r2124): 0000yyxx hex: yy = component number, xx = error cause

Solution and Safe First Checks

  1. Upgrade the firmware of the component involved.

Safety: do not work inside the panel without isolating the power; if unsure, consult a qualified technician.

Related Siemens error codes

Source: the Zeror.ai industrial fault database and Siemens technical documentation. This page is for information; on critical systems follow the manufacturer's manual and authorised service.