Micromod Micro-DCI: 53SL5100A Single Loop Controller Manual de usuario descargar pdf (Pagina 93)

Single Loop Process Controller Instruction Manual

Automatic/Manual Station 85

8.0 Automatic/Manual Station

8.1 Automatic/Manual Station Operation Overview

The Automatic/Manual Station is a conventional single station selector. In Auto, the auto input (Analog

Input 0) is passed directly through the station to the output (Analog Output 0). In Manual, the station

functions as a manual loader, allowing the output to be controlled from the front panel pushbuttons.

If the process variable (Analog Input 1) exceeds tolerable limits of change, the station activates a signal

(CCO0) to an alarm. The process variable feedback signal is not used to generate an output for final ele-

ment control of the process, but is displayed for visual indication of the process status. These events are

illustrated in Figure 8-1.

As illustrated in Figure 8-2, Automatic/Manual Station Block Diagram, when a 4 is loaded into System Mod-

ule datapoint B00 to indicate CS4, the signal designators are as follows:

1. ANIO = Auto Input

2. ANI1 = Process Variable/Alarm

3. ANO0 = Station Output

4. CCIO = Enable Auto

5. CCO0 = Process Alarm

Figure 8-1. Automatic/Manual Station Output Control

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Micromod Micro-DCI: 53SL5100A Single Loop Controller Manual de usuario Pagina 93