Control

The FB2200 optionally supports control functions

including PID control, basic programming through

action blocks, effects, and math blocks.

PID Control – The FB2200 supports up to three

Proportional, Integral, and Derivative (PID) control

loops. Each PID instance supports a primary and an

override loop. Each loop has its own user-defined

input, output, and override capability.

Typically, a PID control maintains a process variable at

set point. If you configure a PID override control, the

primary loop is normally in control of the control

device but the override loop can take over control of

the process if required. A typical example would be

primary flow control with a pressure override.