TeeJet 844-RA User manual

MI844-RA Programming and Operating Manual, 01/2000 1 of 28

Sprayer Control

Programming and Operating Manual

(1.03)

98-70011-R0

844-RA

844-R

Auto Man

Sprayer Control

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Table Of Contents

TABLE OF CONTENTS ............................................................................................................................. 2

PROGRAMMING GUIDELINES.............................................................................................................. 4

IMPORTANT PRELIMINARY INFORMATION .................................................................................................. 4

POWERING CONSOLE ON/OFF ............................................................................................................. 5

POWER ON.................................................................................................................................................. 5

POWER OFF ................................................................................................................................................ 5

PROGRAMMING THE 844-RA SPRAYER CONTROL SYSTEM ...................................................... 6

SELECTION OF WORKING UNITS ................................................................................................................ 6

Reset To Defaults .................................................................................................................................. 6

SPEED SENSOR CALIBRATION..................................................................................................................... 7

Proximity/Magnetic Pulses ................................................................................................................... 7

Radar Speed Pulses............................................................................................................................... 8

DISTANCE COUNTER .................................................................................................................................. 9

FLOW METER SENSOR INSTALLED?............................................................................................................ 9

FLOW METER PULSES............................................................................................................................... 10

Manual Entry ...................................................................................................................................... 10

Automatic Calibration ........................................................................................................................ 10

PRESSURE SENSOR INSTALLED? ............................................................................................................... 11

PRESSURE TRANSDUCER LOW PRESSURE CALIBRATION (P REF) .............................................................. 12

PRESSURE TRANSDUCER MAXIMUM RATING (P HI) ................................................................................. 13

SENSOR SELECTION .................................................................................................................................. 13

SECTION WIDTH ....................................................................................................................................... 14

REFERENCE PRESSURE ............................................................................................................................. 14

REFERENCE SECTION FLOW ..................................................................................................................... 15

PRESSURE REGULATING MODE ................................................................................................................ 16

REGULATING VALVE CAPACITY............................................................................................................... 17

REGULATING VALVE SPEED FACTOR ....................................................................................................... 17

Coarse Adjustment.............................................................................................................................. 17

Fine Adjustment .................................................................................................................................. 18

COMMUNICATIONS ................................................................................................................................... 18

SIMULATED GROUND SPEED .................................................................................................................... 19

Low Speed........................................................................................................................................... 19

High Speed.......................................................................................................................................... 19

MEMORY LOAD FUNCTION....................................................................................................................... 20

TARGET APPLICATION RATE ............................................................................................................ 21

OPERATING INSTRUCTIONS............................................................................................................... 22

SPRAYER CHECKOUT................................................................................................................................ 22

THE SPRAYING OPERATION ...................................................................................................................... 24

FEATURES................................................................................................................................................. 25

AREA/VOLUME DISPLAY .......................................................................................................................... 25

APPLICATION ALARM............................................................................................................................... 26

NO FLOW ALARM..................................................................................................................................... 26

BOOST MODE ........................................................................................................................................... 27

Boost Up ............................................................................................................................................. 27

Boost Down......................................................................................................................................... 27

AUTO POWER DOWN ................................................................................................................................ 28

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PRINTING.................................................................................................................................................. 28

MI844-RA Programming and Operating Manual, 01/2000 4 of 28

Programming Guidelines

Make sure that all hardware components are properly installed and tested.

Before you start the programming process you should first check if the console

and all sensors are working properly. Refer to the plumbing and installation

manual supplied with this console.

IMPORTANT PRELIMINARY INFORMATION

Before you begin, we recommend that you review the following Programming

Guidelines that control the programming process:

☛To enter the program mode press and hold the P

RO key for 3 seconds. The

master switch must be in the off position.

☛To exit the program mode press and hold the P

RO key for 3 seconds, your

inputs will be stored and the computer will exit the program mode. This action

will not be necessary until the last programming step has been completed.

☛To increase the value of a programmable digit, press the +key. To decrease

the value, press the key. These keys are located directly to the right of the

display. For some programming steps, pressing and holding the +or key

will change the programmable value rapidly. Pressing the +or key once

will change the value by one increment.

☛Pressing the +and keys simultaneously in some programming steps will

set the value to “0” or will start an automatic calibration.

☛Pressing the key in some steps will reset the value to the factory default

value.

☛Pressing the P

RO key will advance you to the next programming step. After the

last programming step, the console will return to the first programming step.

☛Note: Due to differences in fonts, some letters on the displays shown in

this manual are not identical with the corresponding letters on the

display of the controller. We tried to match them as close as possible.

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Powering Console On/Off

POWER ON

After all the necessary electrical connections

have been made (refer to the Plumbing and

Installation manual included with this kit) the

console is ready to be powered on. To power

the 844-RA on press the P

RO key once. Initially

the console will display the software version

of the console in the top display and the serial

number of the console in the bottom of the

display for approximately 5 seconds. This

information will be needed when calling for

support. After 5 seconds the display will show

the normal operating view.

POWER OFF

To manually power the console off, press

the and P

RO keys simultaneously. The

console will then save any new information

(area and volume counters) to memory and

will power off.

Note: The console also has an Auto Power Down feature. Refer to this in

the features section of this manual.

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Programming the 844-RA Sprayer Control System

To enter the Program Mode, press and hold the P

RO key for 3 seconds. The first

programming step should appear on the display.

SELECTION OF WORKING UNITS

The 844-RA is capable of working in either

GLM (Gallons Per Lane Mile) or GPA (Gallons

Per Acre) units. In this step you select which

units you will be using.

Use the +and keys to switch from GLM to

GPA units. Press the P

RO key to accept the

value and advance to the next program step.

Reset To Defaults

If you made a change to the units in the first

programming step, before advancing to the

next step the console will ask if you would like

to reset all the program parameters to defaults

specified for the units you have chosen. Use

the +or key to select either yes or no.

After you have made your selection, press the

RO key to begin resetting or advance to the next

step.

Note: If you did not make any changes to the units, this step will be

skipped and you will automatically be advanced to Speed Sensor

Calibration Step.

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SPEED SENSOR CALIBRATION

Note: During Speed Calibration, the 844-RA will automatically sense

whether a Wheel Speed or Radar Speed Sensor is being used.

Proximity/Magnetic Pulses

The speed sensor needs to be calibrated in

order to provide the proper speed and area

readings. The value for this step is the

number of pulses generated by the speed

sensor in 300 ft., or by entering the number

manually.

Automatic Calibration:

To automatically calibrate the speed sensor,

first mark off a distance of exactly 300 ft.

Next press and hold the +and keys

simultaneously for 3 seconds to clear the

contents of the display and to activate the

auto calibration mode. When the auto

calibration mode has been activated, “CA L ”

will be displayed at the lower right of the

display.

Now start driving toward the start point of the

of 300 ft. (100 meter) course. As you cross

the start point press the +key once to begin

the calibration process. Continue across the

course and the 844-RA will count the pulses

as the sprayer moves. The speed at which

you drive over the course is not important. As

you cross the end point, press the +key

once. The number displayed is your speed

calibration number.

Note: The auto speed calibration process should take place with the

sprayer tank ½ full.

Note: It is best to repeat the automatic speed calibration process at least

twice and use and average of the speed calibration numbers.

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During the automatic calibration step, the 844-RA automatically senses whether

a proximity/magnetic or radar ground speed sensor is installed

Radar Speed Pulses

Automatic Calibration

The automatic calibration of a Radar speed

sensor is similar to the automatic calibration of a

proximity/magnetic wheel speed sensor. Refer

to the directions above. When the console has

determined that a Radar Speed Sensor is being

used, “RAD” will be displayed in the lower left of

the console display.

When the correct value has been entered, press the P

RO key to validate this value

and advance to the next step.

Note: If the auto calibration mode has been activated, no other functions

are possible until the console receives speed pulses for calibration. To

deactivate the auto calibration mode, press the +key twice.

Note: To manually enter the radar calibration value, first press the P

RO and +

keys simultaneously to put the console into radar mode. When the control

console is in the radar mode, “RA D” will be displayed in the lower left of the

console display. Now use the +or keys to adjust the value. Pressing the

Auto/Man key will reset the speed calibration to the default value.

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DISTANCE COUNTER

This step is a feature, not a calibration step. No

specific value needs to be entered here for the

controller to operate correctly.

This feature will measure distance in feet. This

can be used to confirm Automatic Speed

Calibration (see note below). To activate the

counter, turn the Master Boom Switch on. To

avoid actually spraying during this task, toggle

the individual boom sections off.

Anytime that the Master Boom Switch is on during this step to console will

measure distance. If the Master switch is toggled off, the console will stop

counting distance.

To clear an existing distance, press and hold the +and keys simultaneously

for 3 seconds.

Note: To confirm Automatic Speed Calibration, first complete the

calibration procedure. Advance to Distance Counter step. Drive across the

same 300 feet course turning the Master Switch ON at the start point and

OFF at the finish point. Distance measured should be 300 feet (+/- 6 feet).

FLOW METER SENSOR INSTALLED?

This step indicates if a flow meter has been

installed on the sprayer. Use the +or

keys to adjust the value. Either select YES if a

flow meter is installed or NO if a flow meter will

not be used.

When the correct value has been entered,

press the P

RO key to validate this value and

advance to the next step.

Note: If you select NO in this step, the next step in the manual will not

appear in the console programming selection.

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FLOW METER PULSES

Note: This step may not appear in the console programming. It only

appears if the Flow Meter Installed step is set to YES.

During the Flow Meter Pulses step, the

symbol (flow meter turbine) will be flashing at

the top of the console display.

In this step the flow meter calibration number

can be entered manually from the factory

calibrated flow meter pulse rate tag or an Auto

calibration procedure can be activated to

determine the flow meter pulses based on a

know volume of fluid.

Manual Entry

First locate the factory calibrated flow meter pulse rate tag on the flow meter. If

this varies from the default value (it usually does) of the console, use the +or

keys to modify the value.

Automatic Calibration

To complete an automatic calibration of the

flow meter, press and hold the +and keys

simultaneously for 3 seconds. This will clear

the existing value and initiate the calibration

procedure.

“CA L ” will be displayed in the screen. This

indicates that the controller is ready to begin

the calibration process.

Engage the sprayer pump. Push the +key to

activate the calibration. Now turn the boom

sections on and begin spraying a known

volume of fluid (e.g. 100 gallons). As you spray

the known amount, the console will count the

pulses.

Table of contents

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