Configuration

Table 6-3 Analog Signal Sources

Analog Signal

Description

Definition

Input 1 PV

Input 1 Process

PV Source selection

 

Variable

 

 

 

 

Input 2 PV

Input 2 Process

PV Source selection

 

Variable

 

 

 

 

Input 1 Temp

Input 1 Temperature

Input 1 Temperature Selection

 

 

 

Input 2 Temp

Input 2 Temperature

Input 2 Temperature Selection

 

 

 

Pharma Out 1

Pharmacopoeia

Input 1 Pharmacopia 1 Output (for Conductivity) = percent of USP

 

Output 1

stage limit

 

 

Output = 100 * pv in uScm / USP stage limit

 

 

Valid for Conductivity Input

 

 

 

Pharma Out 2

Pharmacopoeia

Input 2 Pharmacopia 2 Output = percent of USP stage limit

 

Output 2

Output = 100 * pv in uScm / USP stage limit

 

 

 

 

Valid for Conductivity Input

 

 

 

Math 1

Math 1

 

 

 

Math selections can be connected to any Input PV, secondary

Math 2

Math 2

 

 

variable (Temperature), or Calculated Value. Math blocks include

Math 3

Math 3

scaling for the linear selection only.

 

 

See Table 6-10 for Math Configuration

Math 4

Math 4

 

 

 

 

Func Gen 1

Function Generator 1

Generates an output characteristic curve based on up to 11

 

 

configurable data points for both input (X) and output values (Y).

Func Gen 2

Function Generator 2

Part of the Auxiliary Configuration group.

 

 

See Table 6-12 for Function Generator Configuration

 

 

 

Switch 1

Switch 1

Switch selections have 2 input sources (A and B). A switch block is

 

 

used to select between two analog signals. The switch block can be

Switch 2

Switch 2

used for many monitor and control strategies. A Digital Signal Source

 

 

when active will select the B input source of the switch as the output.

 

 

Part of the Auxiliary Configuration group.

 

 

See Table 6-12 for Switch Configuration

 

 

 

Sum*

Input 1 + Input 2

 

 

 

 

Difference*

Input 1 – Input 2

 

 

 

The availability of calculated variables in the list of available sources

Ratio*

Input 1 / Input 2

 

 

for alarms, math and control and for status display is determined by

%Passage*

Min(Input 1 or 2)

similarity of units of measure between the two input boards.

 

Max(Input 1 or 2)

 

 

*100

 

 

 

 

% Rejection*

(1-Min(Input 1 or 2)/

 

 

Max(Input1 or 2))

 

 

*100

 

 

 

 

Cation Value

pH Value

Calculated pH value from differential conductivity

 

 

 

PID Out 1

PID Output 1

PID 1 Output in percent (0 to 100). Normally connected to a

 

 

proportional current (Current Type) or time proportional or frequency

 

 

proportional relay.

 

 

 

January 2009

UDA2182 Universal Dual Analyzer Product Manual

59

Page 71
Image 71
Honeywell UDA2182 manual Analog Signal Sources, Analog Signal Description Definition