Red-lion PAX2D User Manual download pdf (Page 13)

Non-linear Application – Up to 10 Scaling Points

For non-linear processes, up to 10 scaling points may be used to provide a

piece-wise linear approximation representing the non-linear function. The Rate

Display will be linear between sequential scaling points. Thus, the greater the

number of scaling points, the greater the conformity accuracy. The Crimson

software provides several linearization equations for common Rate applications.

RATE INPUT SCALING STYLE

KEY APPLY

Rate Input values for scaling points can be entered by using the Key-in or the

Applied style described below.

Key-in:

Enter the Rate Input value by pressing the ! or @ keys. This value is always

in pulses per second (Hz).

Applied:

The existing programmed Rate Input value will appear. To retain this value,

press the P key to continue to the next parameter. To enter a new value, apply

an external rate signal to the appropriate input terminal. Press the @ key and the

applied input frequency (in Hz) will be displayed. To insure the correct reading,

wait until a consistent reading is displayed, then press the P key to accept this

value as the Rate Input Value and continue to the next parameter. Follow the

same procedure if using more than 2 scaling points.

RATE DISPLAY VALUE SCALING POINT 1

0 to 999999

For all zero-based applications (display value 0 for 0 Hz input), the Display

Value and Input Value for Scaling Point 1 should be set to 0 and 0.0 respectively.

For non-zero based applications, enter the desired Display Value for a 0 Hz input.

RATE INPUT VALUE SCALING POINT 1

0.0 to 99999.9

Normally the Rate Input Value for Scaling Point 1 is 0.0.

RATE DISPLAY VALUE SCALING POINT 2

0 to 999999

Enter the desired Rate Display Value for Scaling Point 2.

RATE INPUT VALUE SCALING POINT 2

0.0 to 99999.9

Enter the corresponding Rate Input Value for Scaling Point 2, by using the

Input Scaling Style selected.

RATE DISPLAY ROUNDING

1 5 20 100

2 10 50

Rounding values other than ‘1’ round the Rate display to the nearest

increment selected (e.g. rounding of ‘5’ causes 122 to round to 120 and 123 to

round to 125). Rounding starts at the least significant digit of the Rate display.

RATE LOW CUT-OUT

0 to 999999

The Low Cut Out value forces the Rate display to zero when the Rate display

falls below the value entered.

RATE SCALING

To scale the Rate, enter a Scaling Display value with a corresponding Scaling

Input value. (The Display and Input values can be entered by Key-in or Applied

Methods.) These values are internally plotted to a Display value of 0 and Input

value of 0 Hz. A linear relationship is formed between these points to yield a rate

display value that corresponds to the incoming input signal rate.

KEY-IN SCALING METHOD CALCULATION

If a display value versus input signal (in pulses per second) is known, then

those values can be entered into Scaling Display (Rx dSP) and Scaling Input

(Rx INP). No further calculations are needed.

If only the number of pulses per ‘single’ unit (i.e. # of pulses per foot) is

known, then it can be entered as the Scaling Input value and the Scaling Display

value will be entered as the following:

RATE PER

DISPLAY (Rx dSP) INPUT (Rx INP)

Second 1 # of pulses per unit

Minute 60 # of pulses per unit

Hour 3600 # of pulses per unit

NOTES:

1. If # of pulse per unit is less than 10, then multiply both Input and Display

values by 10.

2. If # of pulse per unit is less than 1, then multiply both Input and Display

values by 100.

3. If the Display value is raised or lowered, then Input value must be raised

or lowered by the same proportion (i.e. Display value for per hour is

entered by a third less (1200) then Input value is a third less of # of pulses

per unit). The same is true if the Input value is raised or lowered, then

Display value must be raised or lowered by the same proportion.

EXAMPLE:

1. With 15.1 pulses per foot, indicate feet per minute in tenths. Scaling

Display = 60.0 Scaling Input = 15.1.

2. With 0.25 pulses per gallon, indicate whole gallons per hour. (To have

greater accuracy, multiply both Input and Display values by 10.) Scaling

Display = 36000 Scaling Input = 2.5.

RATE C PARAMETERS

RATE C CALCULATION

Select the calculation for the Rate C display.

SELECTION MODE DESCRIPTION

NONE

None Rate C disabled.

Add Ab

SUM (A+B) Rate C shows the sum of Rate A

and Rate B.

Sub Ab

DIFFERENCE (A-B) Rate C shows the difference of Rate

A and Rate B.

Pct Ab

RATIO (A/B) Rate C shows the percentage of

Rate A to Rate B.

Pct At

PERCENT OF TOTAL

(A/A+B)

Rate C shows the percentage of

Rate A to the total of Rate A and

Rate B.

Pct dr

PERCENT DRAW

(A-B/B)

Rate C shows the percent draw

between Rate A and Rate B.

StYLE

KEY

Rtx

RX dSP

RX INP

0.O

RX dSP

100O

RX INP

1000.O

ROUNd

Rtx

LO-CUt

Rtx

SELECt

RAtE C

NONE

RtC

1 2 ... 8 9 10 11 12 13 14 15 16 17 18 ... 35 36

Comments to this Manuals

No comments

Red-lion PAX2D User Manual Page 13

Comments to this Manuals

Related products and manuals for Computer Accessories Red-lion PAX2D