Process Control

A process controller is provided for cogeneration, fluid level maintenance,

pressure control, or other applications. An adjustable bandwidth signal input filter,

flexible PID controller adjustments, an adjustable deadband, and control

selectable for direct or indirect action, allow the process control to be used in a

wide variety of applications.

A 4–20 mA (1–5 Vdc or a 4–12–20 mA) process transmitter provides the process

signal to the MSLC. The MSLC includes an internal digital process reference

which may be controlled by the raise and lower switch contact inputs or by an

external 4–20 mA (1–5 Vdc) remote process reference. The output of the

process control, like the import/export control, is the percentage of rated load

setpoint to the individual generators in isochronous load sharing.