Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Manual do Utilizador descarregar pdf (Página 116)

A.1.4 CS4 - AUTOMATIC/MANUAL STATION

The automatic/manual station configures the controller into a conventional single station automat-

ic/manual selector with manual loading.

Loading CS4 initializes the CON0 display mode to 4. The Auto/Manual Station is shown in block

diagram form in Figure A–4. Also provided is Table A-4, which is a worksheet that shows the CS4

wirelist connections; wirelist datapoints not connected are left at default. Table A-4 is partitioned

by FCS module type applicable to CS4 (those modules illustrated in Figure 2-1). The datapoint pa-

rameters for each module are shown with their default values.

The following I/O assignments result from loading CS4:

ANI0 Auto Input

ANI2 Alarmed Variable

ANI3 Tracking Input

ANO0 Station Output

CCI0 Force Output Tracking

CCI1 Auto Enable

CCO0 Process Alarm 1

CCO1 Process Alarm 2

The unit operates as a standard auto/manual selector and manual loader. Transfer from automatic

to manual is bumpless, after which the output may be manipulated via the output push buttons. In

automatic, the signal on ANI0 is passed through to the station’s output. Automatic selection can

be overridden by an open contact at CCI1. The station’s output tracks ANI3 when an open contact

appears on CCI0 and output tracking is enabled (L119 = 1). The station also provides alarming,

based on an independent signal (ANI2). Alarm conditions are reflected by CCO0 and CCO1.

FCS 53MC5000 Flexible Control Strategies

A–26

414-TXT

1 2 ... 111 112 113 114 115 116 117 118 119 120 121 ... 200 201

Sem comentários

Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Manual do Utilizador Página 116