Chris Hardy, Cross Company Integrated Systems Group
Articles
System Integrators May 5, 2015
How to cycle three or more pumps and fans
Cycling motors on and off could be a way to meet demand; minimize starts, stops, and run time; and equalize run time between motors using a scheme.
By Chris Hardy, Cross Company Integrated Systems Group
Energy Efficiency November 4, 2014
How to control two process variables with one output
How can a system control multiple process variables with only one output? A system can limit both values simultaneously. The operator enters setpoints for both and both act as limits.
By Chris Hardy, Cross Company Integrated Systems Group
System Integrators August 6, 2014
Advanced PID Loop Tuning Methods
Some PID loops cannot be satisfactorily tuned by adjusting the three primary constants. When combined with good basic tuning, advanced methods can improve stability, responsiveness, and limit overshooting.
By Chris Hardy, Cross Company Integrated Systems Group