PAXCDL10【PDF 18/32 页】ANALOG OUTPUT CARD

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6.4 MODULE 4 - R ATE I NPUT P ARAMETERS ( ????? ) - PAXR & I

PARAMETER MENU

Module 4 is the programming for the Rate parameters. For maximum input

frequency, Rate assignment should be set to ?? when not in use. When set to

?? , the remaining related parameters are not accessible. The Rate value is

shown with an annunciator of ‘ ? ’ in the Display Mode.

Note: For PAXR, ???? is actually ?????? on the unit’s display and ???? is

actually ?????? on the unit’s display.

PAXI: RATE ASSIGNMENT

Non-linear Application – Up to 10 Scaling Points

Non-linear processes may utilize up to nine segments (ten scaling points) to

provide a piece-wise linear approximation representing the non-linear function.

The Rate display will be linear throughout each individual segment (i.e.

between sequential scaling points). Thus, the greater the number of segments,

the greater the conformity accuracy. Several linearization equations are

available in the software.

?????? ?

? ??????

??

??????

??????

About Scaling Points

Each Scaling Point is specified by two programmable parameters: A desired

Rate Display Value ( ???? ) and a corresponding Rate Input Value ( ???? ).

Scaling points are entered sequentially in ascending order of Rate Input Value.

For measuring the rate (speed) of pulses on Input A, select ?????? . For Input

B select ?????? . This assignment is independent of the counting modes.

LOW UPDATE TIME (DISPLAY UPDATE) *

Two scaling points must be programmed to define the upper and lower

endpoints of the first linear segment. Setting ?????? , automatically factory sets

the first scaling point to 0.0 for typical single segment, zero based applications.

When multiple segments are used, the upper scaling point for a given segment

becomes the lower scaling point for the next sequential segment. Thus, for each

?????? ?

? ???

??? ? to ? ???? ? seconds

additional segment used, only one additional scaling point must be programmed.

The following chart shows the Scaling Points, the corresponding Parameter

mnemonics, and the Factory Default Settings for each point.

The Low Update Time is the minimum amount of time between display

updates for the Rate display. Values of 0.1 and 0.2 seconds will update the

display correctly but may cause the display to appear unsteady. The factory

setting of 1.0 will update the display every second minimum.

HIGH UPDATE TIME (DISPLAY ZERO) *

SEGMENT

1

2

3

4

SCALING

POINT

1

2

3

4

5

DISPLAY

PARAMETER

????? ?

????? ?

????? ?

????? ?

????? ?

DISPLAY

DEFAULT

000000

001000

002000

003000

004000

INPUT

PARAMETER

????? ?

????? ?

????? ?

????? ?

????? ?

INPUT

DEFAULT

00000.0

01000.0

02000.0

03000.0

04000.0

?????? ?

? ???

??? ? to ? ???? ? seconds

5

6

7

6

7

8

????? ?

????? ?

????? ?

005000

006000

007000

????? ?

????? ?

????? ?

05000.0

06000.0

07000.0

The High Update Time is the maximum amount of time before the Rate

display is forced to zero. (For more explanation, refer to Input Frequency

Calculation.) The High Update Time must be higher than the Low Update Time

8

9

9

10

????? ?

????? ?

008000

009000

????? ?

????? ?

08000.0

09000.0

and higher than the desired slowest readable speed (one divided by pulses per

second). The factory setting of 2.0, will force the display to zero for speeds

PAXI: RATE DISPLAY VALUE FOR SCALING POINT 1

below 0.5 Hz or a pulse every 2 seconds.

RATE DECIMAL POSITION

????? ? ?

? ?

? ? to ? ??????

?????? ?

? ?

?

???

????

?????

??????

Confirm the Rate Display Value for the first Scaling Point is 0. This parameter

is automatically set to 0 and does not appear when ?????? . (See Note)

This selects the decimal point position for Rate, Minimum and Maximum

rate displays and any setpoint value assigned to these displays. This parameter

does not affect rate scaling calculations.

PAXI: LINEARIZER SEGMENTS

???? ? ? ? to ? ?

? ?

This parameter specifies the number of linear segments used for the Rate

Scaling function. Each linear segment has two scaling points which define the

upper and lower endpoints of the segment. The number of segments used

depends on the linearity of the process and the display accuracy required as

PAXI: RATE INPUT VALUE FOR SCALING POINT 1

????? ? ? ? ? to ? ???????

? ???

Confirm the Rate Input Value for the first Scaling Point is 0.0. (See Note)

Note: For all linear and most non-linear applications, the Scaling Point 1

parameters ( ????? ? and ????? ? ) should be set to 0 and 0.0 respectively.

Consult the factory before using any non-zero values for Scaling Point 1. These

parameters are automatically set to 0 and do not appear when ?? ?? ?? .

RATE DISPLAY VALUE FOR SCALING POINT 2

described below.

Linear Application – 2 Scaling Points

Linear processes use a single segment (two scaling points) to provide a linear

????? ? ?

? ????

? ? to ? ??????

Rate display from 0 up to the maximum input frequency. For typical zero based

frequency measurements (0 Hz = 0 on display), leave ?????? (factory setting).

For non-zero based 2 scaling point applications, set ?????? , to enter both the

zero segment ( ????? ? & ????? ? ) and segment 1 ( ????? ?? & ????? ? ).

18

Enter the desired Rate Display Value for the second Scaling Point by using

the arrow keys.

* Factory Setting can be used without affecting basic start-up.

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