Micromod RetroPAK: SLC Configuration Manual Manual de usuario descargar pdf (Pagina 87)

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101

Pre-configured Single Loop PID Control

GENERAL DESCRIPTION

The advanced PID controller function code implements a proportional integral derivative

controller.

This control strategy has a loop compounds (SINGLE LOOP CONTROL) with PID

loops with local setpoint, I/O and other function blocks.

UTILIZATION

The loop compound has the function code compound FC156 – PID internally. This is

PID with Local SP and uses a PID block, PAD (Process Alarm Display) blocks and a

variety of other blocks to perform a full-pledged PID with PV and Local Setpoint. The

PID is advanced with feed-forward control, bump-less transfers and other features.

Load the loop compound at the top level (where the IF, DIF, SE and ST blocks are

located) of the function block diagram.

The built-in input 1 (AIN1) and built-in output 1 (AOUT1) are used in the loop.

Figure P1.1.

PID with Local SP

P1- 1

1 2 ... 82 83 84 85 86 87 88 89 90 91 92 ... 393 394

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