Watlow CLS - Manual (Page 127)

Appendix A: Ramp Soak
CLS User’s Guide 119
Appendix A: Ramp Soak
Introduction
This Appendix will teach you how to set up and use Ramp/Soak profiles
in CLS controllers.
The Ramp/Soak feature turns your controller into a powerful and
flexible batch controller. Ramp/Soak lets you program the controller to
change a process setpoint in a preset pattern over time. This preset
pattern, or temperature profile, consists of several segments. During a
segment, the temperature goes from the previous segment’s setpoint to
the current segment’s setpoint.
• If the current segment’s setpoint is larger or smaller than the previ-
ous segment’s setpoint, it is called a ramp segment.
• If the current segment’s setpoint is the same as the previous seg-
ment’s setpoint, it is called a soak segment.
Each segment can have up to two triggers. At least one of these two
triggers must be true before the segment can start. While the input is not
true, the profile waits (this wait state is called trigger wait).
You can use any one of the eight digital inputs for triggers. You can also
use the same trigger for more than one segment or more than one
profile.
Each segment can also have up to four events (external signals
connected to the digital outputs). Events occur at the end of a segment.
You can use any of the digital outputs that are not used for control or for
the SDAC clock for events.
R/S Features
• User-configurable time base: Watlow Anafaze’s Ramp/Soak lets
you set your profiles to run for hours and minutes or for minutes and
seconds
— Whichever is appropriate for your installation.
• Repeatable profiles: You can set any profile to repeat from 1 to 99
times or continuously.
• Fast setup for similar profiles: You can set up one profile, then
copy it and alter it to set up the rest.
• External reset: Use the CLS external reset menu to configure a dig-
ital input you can use to reset a profile to the Ready state.