Siemens CU240B/E-2 Error F30651: SI P2: Synchronization with Control Unit unsuccessful

Control unit · taken from the manufacturer’s manual, pages cited

Fault codeF30651

Processor 2 failed to synchronize safety time slices with Processor 1, preventing safe operation. The manual's first action is: “OFF2”

Model
Siemens CU240B/E-2
Display shows
SI P2: Synchronization with Control Unit unsuccessful (F30651)
Type
Fault code
Source
Manual p. 723

What F30651 means

SI P2: Synchronization with Control Unit unsuccessful p. 723

Common causes

  • The drive-integrated "Safety Integrated" function requires synchronization of the safety time slices on processor 1 and processor 2. This synchronization was unsuccessful. p. 723

What to do

  1. OFF2 p. 723

If F30651 is still not resolved

The manual gives no further instruction for this code. Open the code table in the PDF or contact Siemens service.

Open the manual at page 723 All CU240B/E-2 error codes Manual details & download

This page summarises what the manufacturer’s manual says about F30651; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with Siemens. Found a mistake? Report an error.