User`s guide

Appendix B - Loop Application Examples
Carbon Potential Examples
Release E UMC800 Control Builder User’s Guide 247
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Example 3 - Setpoint programmer application - carburizing cycle
The Auxiliary output of the Set Point Programmer (SPP) block can be used to
drive the RSP of a % carbon control loop for a boost/diffuse carburizing cycle in
an enclosed quench furnace. Using consequetive Ramp and Soak segments,
idle, boost, and diffuse %C setpoints can be programmed. The carbon algorithm
can be set to only start after reaching 1400F.
1400F
Boost
Diffuse
1.1%
0.9%
%Ccontrol active
1650F
%C
Temp