Setpoint Soak - FACTS Engineering Direct Logic 405 Manual

SetPoint Soak

A Soak of the SetPoint is the changing from the current SetPoint to a specified final SetPoint in specified
steps with each step maintained for a specified time. If guaranteed soaking is programmed, at each step
change in the SetPoint, the Process Variable must be within a specified band around the SetPoint in
order for the Soak time to be measured.
In this example, the step change in the SetPoint is stored in V1400. The Soak time, in minutes, is stored
in V1401 and the temperature band around the SetPoint is stored in V1402. The final SetPoint is stored
in V1403.
If guaranteed soaking is not desired then delete the Stage 1 logic marked 'Guaranteed Soaking' in the
following example.
3.8 SUPPORTING LADDER LOGIC