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model 2704 controller installation and operation handbook - Soliton

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<strong>2704</strong> Controller Getting Started<br />

3.11. DISPLAYS FOR CASCADE, RATIO AND OVERRIDE<br />

The Loop Summary, displayed in previous views in this chapter, shows a <strong>controller</strong><br />

configured as ‘Single’ loop. The Loop Summary view, for <strong>controller</strong>s configured as cascade,<br />

ratio, override or valve position varies as shown in this section.<br />

For more information on these methods of control see Chapter 9.<br />

Target Output Power<br />

Master PV<br />

Master SP<br />

Slave PV<br />

Slave SP<br />

This line may show different parameters<br />

Press to show alternatives. The defaults are:<br />

Target Setpoint The main SP Press<br />

Target OP Output dem<strong>and</strong><br />

VPos<br />

Valve position (VP <strong>controller</strong><br />

only)<br />

or<br />

Local SP<br />

Disable CSD<br />

Local (Slave) setpoint<br />

Allows cascade to be turned off<br />

eg for commissioning purposes<br />

to adjust<br />

the value.<br />

Note:<br />

1. The parameter displayed first depends upon other settings.<br />

For example; if <strong>controller</strong> is in Auto the Target SP is displayed<br />

first; if the <strong>controller</strong> is in Manual the Target OP is displayed<br />

first.<br />

2. In configuration level it is possible to hide or make individual<br />

parameters read only.<br />

Figure 3-8: Cascade Loop View<br />

Installation <strong>and</strong> Operation H<strong>and</strong>book. Part No HA026502 Issue 1.0 Apr-00 3-15

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