PAXDR000 Red Lion Controls, PAXDR000 Datasheet - Page 13

• Manufacturer Part Number: PAXDR000
• Description: AC, Dual Rate, Upgradeable Red
• Manufacturer: Red Lion Controls
• Type: Rate/Totalizerr

Specifications of PAXDR000

• Accuracy: ± (0.01% of Input Signal Frequency)
• Cut Out, Panel: 3.62W x 1.77H Inches
• Dimensions: 3.80W x 1.95H Inches
• Display Digit Height: .56 Inches
• Display Type: LED Adjustable
• Function: Rate/Totalizer
• Input Type: Switch Selectable Pulse
• Keypad Type: 3 Programmable Function (5 Keys Total)
• Number Of Digits: Rate = 5, Totalizer = 8
• Primary Type: Electronic
• Range, Measurement: Rate = 0 to 99999, Totalizer = ±99999999
• Special Features: Programmable Function Keys
• Termination: Cage Clamp
• Voltage, Supply: 85 to 250 VAC
• Lead Free Status / Rohs Status: RoHS Compliant part


the arrow keys.

using the arrow keys. Rate Input values for scaling points can be entered by
using the Key-in or the Applied method.

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 SCALING
Input value. (The Input value 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.
SCALING CALCULATION FOR KEY-IN METHOD
those values can be entered into Scaling Display (
(
known, then it can be entered as the Scaling Input value and the Scaling Display
value will be entered as the following:
NOTES:
EXAMPLE:




Enter the desired Rate B Display Value for the second Scaling Point by using
Enter the corresponding Rate B Input Value for the second Scaling Point by
Rounding values other than one will round the Rate display to the nearest
To scale the Rate, enter a Scaling Display value with a corresponding Scaling
If a display value versus input signal (in pulses per second) is known, then
If only the number of pulses per ‘single’ unit (i.e. # of pulses per foot) is
1. If # of pulses per unit is less than 1, multiply both Input and Display values
2. If the Display value is raised or lowered, then Input value must be raised
3. Both values must be greater than 0.
1. With 15.1 pulses per foot, show feet per minute in tenths. Scaling Display
2. With 0.25 pulses per gallon, show whole gallons per hour. (To have greater
x
). No further calculations are needed.
by 10 or 100 as needed to obtain greater accuracy.
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.
= 60.0 Scaling Input = 15.1.
accuracy, multiply both Input and Display values by 10.) Scaling Display
= 36000 Scaling Input = 2.5.
RATE B DISPLAY VALUE FOR SCALING POINT 2
 
RATE B INPUT VALUE FOR SCALING POINT 2

RATE PER
Second
Minute
Hour




RATE B DISPLAY ROUNDING

to



to
DISPLAY (
 

3600

60

1

x
)


# of pulses per unit
# of pulses per unit
# of pulses per unit

INPUT (
x
) and Scaling Input


x
)
13
INPUT FREQUENCY CALCULATION
edges received during a sample period of time. The sample period begins on the
first falling edge. At this falling edge, the meter starts accumulating time
towards Low Update and High Update values. Also, the meter starts accumulating
the number of falling edges. When the time reaches the Low Update Time value,
the meter looks for one more falling edge to end the sample period. If a falling
edge occurs (before the High Update Time value is reached), the Rate display
will update to the new value and the next sample period will start on the same
edge. If the High Update Time value is reached (without receiving a falling edge
after reaching Low Update Time), then the sample period will end but the Rate
display will be forced to zero. The High Update Time value must be greater than
the Low Update Time value. Both values must be greater than 0.0. The input
frequency calculated during the sample period, is then shown as a Rate value
determined by either scaling method.
The meter determines the input frequency by summing the number of falling