Configuration

Table 6-10 Math Configuration

 

Sub-menu

Parameter

Selection or

 

Parameter Definition

 

 

 

Range of

 

 

 

 

 

Setting

 

 

 

Math 1

Type

Linear (default)

 

Provide a linear output with Gain and Offset with digital

 

Math 2

 

 

 

filtering.

 

Math 3

 

 

 

Output = Filter (Gain * (Input) + Offset)

 

Math 4

 

 

 

 

 

 

 

Linear is simple linear scale used to retransmit the PV

 

 

 

 

 

 

 

 

 

 

using the High Range as scaled 100% output and the

 

 

 

 

 

Low Range is the scaled to 0% output. There is no

 

 

 

 

 

restriction on the High and Low ranges. Setting the

 

 

 

 

 

high range to a value less than the low range will invert

 

 

 

 

 

the action of the math output. Limit out has no effect on

 

 

 

 

 

the output.

 

 

 

 

 

 

 

 

 

Log

 

Log (base 10):

 

 

 

 

 

Output = Log(Input): Input > 10^-10

 

 

 

 

 

Output = -10 Input <= 10^-10 Output Block Low

 

 

 

 

 

Range=Log(Input low value)

 

 

 

 

 

 

 

 

 

Sq Root

 

Square Root:

 

 

 

 

 

Output = SqRoot(Input). Input > 0

 

 

 

 

 

Output = 0 Input < 0

 

 

 

 

 

 

 

 

 

Abs Value

 

Absolute Value

 

 

 

 

 

If Input >= 0 then Output = Input

 

 

 

 

 

If Input < 0 then Output = -Input

 

 

 

 

 

 

 

 

Any Analog Signal

Analog Signal Source – Process signal to be monitored

 

 

 

See Table 6-3

by the Alarm. Any analog source such as PV,

 

 

 

 

Temperature, Pharma, Math, Function Generator,

 

 

 

 

Switch, PID, or Calculated Values*

 

 

 

 

* units of measure between the two input boards must be

 

 

 

 

similar

 

 

 

 

 

 

 

Source

-99999 to

For Linear Math Types. Gain multiplier for Calculation

 

 

 

99999.9 in

Output = Gain * Input + Offset

 

 

 

Engineering Units

 

 

 

 

 

default = 1.000

 

 

 

 

 

 

 

 

 

 

Gain

-99999 to

 

 

 

 

(Linear Only)

99999.9 in

 

 

 

 

 

Engineering Units

 

 

 

 

 

default = 0.000

For Linear Math Types. Offset for Calculation

 

 

 

 

Output = Gain * Input + Offset

 

 

Offset

-99999 to

 

 

 

 

 

 

(Linear Only)

99999.9 in

 

 

 

 

Engineering Units

 

 

 

 

 

 

 

 

 

 

default = 0.000

 

 

 

 

 

 

 

 

 

Filter Time

0 to 120

A software digital filter is provided for dampening the

 

 

 

default = 0.0

process noise and is applied before the limit functions.

 

 

 

 

The units are in time constant seconds.

 

 

 

 

 

 

86

UDA2182 Universal Dual Analyzer Product Manual

January 2009

Page 98
Image 98
Honeywell UDA2182 manual Math Configuration, Linear default