CIP Cleaning Cycle SFC

CIP cleaning cycle SFC

A clean-in-place sequence is naturally expressed as an SFC because only one phase is active at a time. This example moves from idle through pre-rinse, timed caustic wash, and final rinse before issuing a completion pulse. Each transition names the signal that confirms the prior phase. It provides a compact design-review view of a cleaning cycle, while the actual recipe must still define temperatures, concentrations, flow, and validation requirements. Before using the layout in a build or document, compare every label with the source requirements and update the drawing when parts, conditions, or materials change. The example is deliberately small so the essential relationships remain readable, easy to review with collaborators, and ready to extend with the details required for the actual project.

Type Sequential Function Chart (SFC)Standard IEC 61131-3:2013 §6.5Engine schematex-sfcUpdated 9/24/2026

The request

“Create an SFC for a CIP cleaning cycle with idle, pre-rinse, a 20-minute caustic wash, final rinse, and complete steps, advancing on the corresponding completion signals.”

Then tryAdd a sanitize step after the final rinse.Change the caustic circulation time to 30 minutes.

What is in this drawing