PXU20020 Datasheet, PDF(12/32 Page) Red Lion Controls. Inc – MODEL PXU

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PXU20020 Datasheet, PDF (12/32 Pages) Red Lion Controls. Inc – MODEL PXU - TEMPERATURE/PROCESS CONTROLLERS

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7.1 MODULE 1 - Input Parameters (1-IN)

1-INP

PARAMETER MENU

CNFP

tYPE

INPUT

TYPE

SCAL

TEMP

SCALE

dCPt FLtr

DECIMAL

DIGITAL

RESOLUTION FILTERING

bANd

FILTER

BAND

SHFt

SHIFT/

OFFSET

dSP1

DISPLAY

VALUE 1

dSP2

DISPLAY

VALUE 2

SPLO

SETPOINT

LOW LIMIT

SPHI

SETPOINT

HIGH LIMIT

Programming/model dependent.

CJC

COLD

JUNCTION

USr1

USER

INPUT 1

USr2

USER

INPUT 2

F1In

F1 KEY

FUNCTION

F2In

F2 KEY

FUNCTION

ï´ïïï ï

ï ï´ï£ïïª

INPUT TYPE

SELECTION TYPE

ï´ï£ïK K TC

ï´ï£ïJ J TC

ï´ï£ït T TC

ï´ï£ïE E TC

ï´ï£ïN N TC

ï´ï£ïr R TC

ï´ï£ïS S TC

ï´ï£ïb B TC

ï´ï£ïL L TC

ï´ï£ïU U TC

SELECTION TYPE

ï´ï£tK TXK TC

ï²ï³ï¹2 RTD 392

ï²ï³ï¸ïµ RTD 385

nI RTD 672

cU Cu 50

Su 0-5 Volt

10u 0-10 Volt

0-20 0-20 mA

4-20 4-20 mA

0.05u 0-50 mV

Select the input type that corresponds to the input sensor.

ïïïï ï

ï ï°ï

TEMPERATURE SCALE

ï°ï Fahrenheit

ï°ï Celsius

Select either degrees Fahrenheit or Celsius. If changed, check related

parameter values.

* Temperature Input only.

bANd ï

ï1

INPUT FILTER BAND

1 to 100 display units

The filter will adapt to variations in the input signal. When the variation

exceeds the input filter band value, the digital filter disengages and a noise

discrimination filter engages that rejects noise bursts. When the variation

becomes less than the band value, the digital filter engages again. The value of

the band is in display units.

ïïï¦ï´ ï

ïï°

SHIFT/OFFSET

ïï¹ï¹ to ï¹ï¹ï¹ display units

This value offsets the controllerâs display value by the entered amount. This

is useful in applications in which the sensor does not provide an accurate signal.

DISPLAY VALUE SCALING POINT 1

ï¤ïïï± ï

ïï°

ïï¹ï¹ï¹ to ï¹ï¹ï¹ï¹

Enter the first coordinate zero Display Value associated with the lower range

(0V/mA, 4mA) of the input signal, by using the arrow keys.

ï¤ïïï´ ï

ïï°

DECIMAL RESOLUTION

ï° to ï°ï®0 for temperature inputs

ï° to ï°ï®ï°0ï° for process inputs

Select whole degrees, or tenths of degrees for Temperature display, Setpoint

values, and related parameters. For thermocouple types R, S, and B, only whole

degrees of resolution is available. For process inputs up to three decimal point

resolution is available.

DISPLAY VALUE SCALING POINT 2

ï¤ïïï² ï ïï¹ï¹ï¹ to ï¹ï¹ï¹ï¹

ï ï±ï°ï°0

Enter the second coordinate full scale Display Value associated with the

upper range (5V, 10V, etc) of the input signal, by using the arrow keys.

* Process input only.

ïïï´ï² ï

ï8

DIGITAL FILTERING

ï° = least to 50 = most

The filter is an adaptive digital filter that discriminates between measurement

noise and actual process changes. The equation for digital filtering is:

Last displayed PV [ n + measured value

PV =

n+1

Where: n = Digital Filtering selection

If the signal is varying greatly due to measurement noise, increase the filter

value. Decrease the filter value for quicker controller response.

ïïïï ï

ï -148

SETPOINT LOW LIMIT

ïï¹ï¹ï¹ to ï¹ï¹ï¹ï¹ input range dependent

The controller has a programmable low setpoint limit value to restrict the

range of the setpoint. Set the limit so that the setpoint value cannot be set below

the safe operating area of the process.

Shaded parameters are programming/model dependent.

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