Raven SCS 340 Manual

SCS 340
INSTALLATION
AND
SERVICE MANUAL

N O T I C E
The use of the suspension type fertilizers and lime slurries will
significantly reduce the life of the plastic parts in the Flow
Meter and motorized Control Valve. Check the rotor and inlet hub
assembly in the Flow Meter frequently for worn parts. Excessive
wear can affect accuracy.
Do not attempt to modify or lengthen any of the three-wire Speed
Sensor or Flow Meter cables. Extension cables are available from
your Dealer.

Manual Rev. A, SCS 340, 7-98
Order: 50, 7-98, #016-0159-745

1
TABLE OF CONTENTS
SYMBOL DEFINITION .............................................................................................................................................. 2
INTRODUCTION....................................................................................................................................................... 3
INSTALLATION ......................................................................................................................................................... 4
1. MOUNTING THE RAVEN RADAR SPEED SENSOR ............................ 4
2. MOUNTING THE FLOW METER .......................................... 5
3. MOUNTING THE CONTROL VALVE ....................................... 5
4. MOUNTING THE CONSOLE AND CABLING ................................. 6
BATTERY CONNECTIONS...................................................................................................................................... 7
CONSOLE FEATURES ............................................................................................................................................ 8
CONSOLE CALIBRATION ....................................................................................................................................... 9
1. CALCULATING "BOOM CAL" ........................................... 9
2. CALCULATING "SPEED CAL" ......................................... 10
3. CALCULATING "METER CAL" ......................................... 11
4. CALCULATING "VALVE CAL" ......................................... 11
5. CALCULATING "RATE CAL" .......................................... 12
CONSOLE PROGRAMMING ................................................................................................................................. 13
1. INITIAL CONSOLE PROGRAMMING ..................................... 14
2. OTHER DISPLAY FEATURES .......................................... 16
3. SELF TEST FEATURE ............................................... 17
4. ALARM MENU ...................................................... 17
5. OFF TARGET ALARM ................................................ 17
6. AUTOMATIC RATE +/- .............................................. 18
7. LOW LIMIT FLOW SET POINT AND LOW LIMIT ALARM ................... 18
8. DISPLAY SMOOTHING ............................................... 18
9. "VALVE CAL" ..................................................... 19
10. CONTROL VALVE DELAY ............................................. 19
11. SEQUENCE TO ACTIVATE DATA-LOCK .................................. 19
12. SEQUENCE TO CHANGE DATA-LOCK .................................... 19
13. ENTER MODE SEQUENCE WITH ACTIVATED DATA-LOCK ................... 20
INITIAL SYSTEM SET-UP ...................................................................................................................................... 20
INITIAL SYSTEM FIELD TEST............................................................................................................................... 21
PREVENTIVE MAINTENANCE.............................................................................................................................. 21
APPENDIXES
1. WHEEL DRIVE SPEED SENSOR INSTALLATION AND CALIBRATION ....................................................... 22
2. SPEEDOMETER DRIVE SPEED SENSOR INSTALLATION AND CALIBRATION ........................................ 25
3. ALTERNATE BY-PASS LINE PLUMBING SYSTEM......................................................................................... 27
4. PROCEDURE TO TEST SPEED SENSOR EXTENSION CABLES................................................................. 29
5. PROCEDURE TO TEST FLOW METER CABLES ........................................................................................... 30
6. FLOW METER MAINTENANCE AND ADJUSTMENT PROCEDURE............................................................. 31
7. PROCEDURE TO RE-CALIBRATE FLOW METER .........................................................................................32
8. REMOTE SWITCH OPTION .............................................................................................................................. 33
9. HIDDEN FEATURES .......................................................................................................................................... 34
REPLACEMENT PARTS SHEETS
016-0159-745
7/98

2
SYMBOL DEFINITION
METER CAL CONVERSIONS
To convert the METER CAL number simply divide the original number (number printed on
Flow Meter label) by the desired conversion factor.
FOR EXAMPLE:
Original METER CAL No. = METER CAL No. for displays in Fluid Ounces
128
Original METER CAL No. = METER CAL No. for displays in Liters
3.785
Original METER CAL No. = METER CAL No. for displays in Pounds
Weight of one gallon
LIQUID CONVERSIONS
U.S. Gallons x 128 = Fluid Ounces
U.S. Gallons x 3.785 = Liters
U.S. Gallons x 0.83267 = Imperial Gallons
U.S. Gallons x 8.34 = Pounds (Water)
LENGTH
1 millimeter (mm) = 0.039 inch
1 centimeter (cm) = 0.393 inch
1 meter (m) = 3.281 feet
1 kilometer (km) = 0.621 mile
1 inch = 25.4 millimeters; 2.54 centimeters
1 mile = 1.609 kilometers
PRESSURE
1 psi = 6.89 kPa
AREA
1 square meter = 10.764 square feet
1 hectare (ha) = 2.471 acres; 10,000 square meters
1 acre = 0.405 hectare; 43,560 square feet
1 square mile = 640 acres; 258.9 hectares
GPM - Gallons per minute
lit/min - Liters per minute
dl/min - Deciliter per minute
PSI - Pounds per square inch
kPa - Kilopascal
GPA - Gallon per acre
lit/ha - Liter per hectare
ml/ha - Milliliter per hectare
GPK - Gallons per 1,000 sq. ft.
mm - Millimeters
cm - Centimeters
dm - Decimeters
m - Meter
MPH - Miles per hour
km - Kilometers
km/h - Kilometers per hour
US - Volume per ACRE
SI - Volume per HECTARE
TU - Volume per 1,000 sq. ft.
[] - Metric numbers
{} - 1,000 sq. ft. numbers

3
INTRODUCTION
The Raven SCS 340 (SPRAYER CONTROL SYSTEM) is designed to improve the uniformity of spray
applications automatically. Its performance relies on the installation and preventive
maintenance of the complete sprayer. It is important that this Installation and Service
Manual be reviewed thoroughly before operating the system. This Manual provides a simple
step-by-step procedure for installing and operating.
The SCS 340 consists of a computer based Control Console, a Speed Sensor, a turbine type
Flow Meter, and a motorized Control Valve. The Console mounts directly in the cab of
the vehicle for easy operator use. The Raven Radar Speed Sensor is mounted on the vehicle
or on the sprayer implement (Speedometer Drive Speed Sensors and Wheel Drive Speed
Sensors are also available). The motorized Control Valve and Flow Meter mount directly
to the framework of the sprayer. Appropriate cabling is furnished for field
installation.
The operator sets the target rate (volume per area) to be sprayed and the SCS 340
automatically maintains the flow regardless of vehicle speed or gear selection (within
range of selected spray nozzles). A manual override switch allows the operator to
manually control flow for system check-out and spot spraying. The SCS 340 additionally
functions as an area monitor, speed monitor, and volume totalizer.

4
INSTALLATION
1. MOUNTING THE RAVEN RADAR SPEED SENSOR
See Appendix 1 for Wheel Drive Speed Sensor installation instructions.
See Appendix 2 for Speedometer Drive Speed Sensor installation instructions.
For mounting the Radar, the following guidelines will assure proper installation:
It is suggested that a large heavy mounting bracket, (P/N 107-0159-693) be attached
to the vehicle frame for mounting the Radar.
1) Park vehicle on level surface.
2) Select mounting site by considering the following:
a) The line of sight from the lens to the ground must not be obstructed by
structures or tires. Obstructions must not come closer than 20 inches to
the bottom of the Radar. See Figures 1 and 2.
b) The Radar lens must be parallel to the ground from front to back. Radar
can be tilted out 0-15 degrees to provide more clearance and miss
obstructions. See Figure 2.
c) The Radar should be mounted so that the length of the Radar is parallel with
direction of vehicle travel.
3) Use carpenters level to verify that mounting bracket is parallel to the ground.
4) Bolt mounting bracket to implement.
5) Bolt Radar to mounting bracket using mounting hardware. See Figure 3.
6) Connect Radar with Radar Interface Cable (P/N 115-0159-539), to the Console. The
Red wire should be connected to the Orange cable wire. The White wire should be
connected to the White cable wire (See "BATTERY CONNECTIONS").
CAUTION: The connection of the Radar power in reverse polarity could result
in damage to the Radar.
FIGURE 1 FIGURE 3
FIGURE 2

5
2. MOUNTING THE FLOW METER
l) Mount the Flow Meter in the area of the boom valves per Figure 4. All flow through
the Flow Meter must go to booms only, i.e. no return line to tank or pump after
Flow Meter.
2) Mount Flow Meter horizontal to the ground. Use the bracket to secure the Flow
Meter.
3) For best results, allow a minimum of 7 1/2 inches [20 cm] of straight hose on inlet
of Flow Meter. Bend radius of hose on outlet of Flow Meter should be gradual.
4) Flow must be in direction of arrow on Flow Meter.
NOTE: For flow rates less than 3 GPM [11 lit/min], mount the Flow Meter
vertically with arrow pointing upward. (Refer to Appendix 3 for
alternate plumbing diagram).
NOTE: It is essential, when using suspensions, that the system be thoroughly
rinsed out each day after use. Failure to do so may cause system to
malfunction.
3. MOUNTING THE CONTROL VALVE
l) Mount the motorized Control Valve in the main hose line between the Flow Meter
and the booms, with motor in the upright position. (For less than 3 GPM [11 lit/
min] the motorized Control Valve is mounted in the by-pass line, refer to Appendix
3 for alternate plumbing diagram).
2) Connect the Flow Control Cable connectors to boom valves, Flow Meter, and motorized
Control Valve. (Black wire to boom valve #1, Brown wire to boom valve #2, and
Blue wire to boom valve #3, Black/White wire to boom Valve #4).
FIGURE 4

6
4. MOUNTING THE CONSOLE AND CABLING
l) Mount the Console to secure support inside the cab of the vehicle.
2) Connect the Control Cable to the plug in the back of the Console. Route the cable
out of the vehicle cab. (Flow Meter extension cables are available from your
Dealer).
3) Turn AUTO/MAN/OFF switch OFF and route Red and White battery wires to a 12-Volt
battery. Attach White battery wire to the NEGATIVE (-) battery terminal, and the
Red battery wire directly to the POSITIVE (+) battery terminal. See Figure 6 on
page 7. (DO NOT CONNECT RED AND WHITE WIRES TO THE STARTER). Secure the battery
wires with plastic cable ties. DO NOT tie battery wires close to existing battery
leads or any other electrical wiring. See Appendix 8 for Remote Switch
installation.
4) Connect the Speed Sensor to the plug in the back of the Console.
5) Secure and tie the Speed Sensor Cable and Console Control Cable with plastic cable
ties.
6) Initial installation of the system is now complete.
FIGURE 5

7
BATTERY CONNECTIONS
FIGURE 6

8
CONSOLE FEATURES
IMPORTANT: This Console requires selection of US (acres), SI [hectares], or
TU {1,000 sq. ft.} area; SP1 (wheel drive, etc.) or SP2 (radar)
speed sensor; and C-Sd (Standard Valve) or C-FC (Fast Close Valve).
Console Revision can be determined by the
letter stamped in REV box on label.
Console Program can be determined by the
letter stamped in PGM box on label.
FUNCTION KEYS -- Used to Display Data
DISTANCE -- Distance Traveled
SPEED -- Speed of Vehicle
TOTAL VOLUME -- Total Volume Applied
TOTAL AREA -- Total Area Applied
CALIBRATION KEYS -- Used to enter data into the
Console to calibrate the system.
BOOMS 1-4 -- Length of BOOMS 1-4
SPEED CAL -- Determined by Speed Sensor
METER CAL -- Meter Calibration Number
FLOW RATE -- Target Application Rate
Manual override control provides
capability for spot spraying.
Booms can be controlled individu-
ally, or all at once with MASTER
ON/OFF switch.
CE -Use like you do the CE key on
a calculator.
Selects OFF (Power OFF), manual,
or fully automatic control.
Displays actual rate of application,
calibration, and function data.
ENTER -Used only to enter data into
the Console.
063-XXXX-XXX

9
CONSOLE CALIBRATION
1. CALCULATING "BOOM CAL"
1) Broadcast Spraying:
Calculate the width of each boom in inches [cm] by multiplying the number of tips
times the spacing. Write these boom widths down for future reference when
programming the Console.
FIGURE 7
2) Band Spraying:
Calculate the width of each boom in inches [cm] by multiplying the number of tips
by the spacing. Calculate the Adjusted Applied Rate by multiplying the Broadcast
Rate by Band Width in inches [cm] divided by Spacing in inches [cm].
EXAMPLE: Broadcast Rate = 20 GPA [200 lit/ha]
Spacing = 40 inches [100 cm]
Band Width = 14 inches [40 cm]
Adjusted Applied Rate = GPA x Band Width
Spacing
=20 x 14 = 7 GPA
40
=[200] x [40] = [80 lit/ha]
[100]

10
2. CALCULATION OF RADAR "SPEED CAL"
NOTE: Numbers in brackets [ ] are metric equivalents.
1) Reset Console according to the instruction manual.
2) Complete "INITIAL CONSOLE PROGRAMMING" in the Installation and Service Manual for
your Console. Select SP2 for correct operation of radar. If your Console does
not have SP1/SP2 select, you must either update your Console's program, or use
a radar adapter (P/N 063-0159-590).
3) Enter a SPEED CAL number of 598 [152] in key labelled .
4) Set POWER switches to ON, all other switches to OFF.
5) Enter "0" in key labelled .
6) Drive 1 mile [1 kilometer]. To achieve the most accurate calibration, accelerate
and decelerate slowly.
CAUTION: Do not use vehicle odometer to determine distance. Use section
lines or highway markers.
7) Read DISTANCE by depressing key labelled .
DISTANCE display should read a value of approximately 5280 [1000]. If it reads
between 5260-5300 [990-1010], the SPEED CAL is 598 [1520].
If the DISTANCE display reads any other value, divide SPEED CAL by the value
observed in DISTANCE, then multiply by 5280 [1000]. This will give you the correct
value to enter for SPEED CAL. Round off to the nearest 3 digit number.
EXAMPLE: Assume DISTANCE reads 5000 [980].
ENGLISH UNITS: METRIC UNITS:
= 598 x 5280 = 631.5 = [1520] x [1000] = [1550]
5000 [980]
The number to enter for SPEED CAL is 632 [155].
8) Recheck the new SPEED CAL calculated in Step 7 as follows:
a) Enter the new SPEED CAL number as in Step 3.
b) Repeat Steps 5, 6, and 7.

11
3. CALCULATING "METER CAL"
The Flow Meter calibration number is stamped on the tag attached to each Flow Meter.
Write down this number for future reference when programming the Console computer.
To convert original METER CAL from gallons to desired units of measure (oz, lbs,
or liters per area), see METER CAL CONVERSIONS. Write down this calibration number
for future reference when programming the Console.
4. CALCULATING "VALVE CAL"
1) The initial Control Valve calibration number is 2123 for C-Sd, or 743 for C-FC.
After operating the system, you may desire to refine this number. See definitions
below:
For STANDARD VALVE (C-Sd): For FAST VALVE (C-FC):
Valve Backlash Digit: Controls the time of the first correction pulse after
a change in correction direction is detected.
INC to DEC -or- DEC to INC.
Range: 1 to 9 1-Short Pulse
9-Long Pulse
Valve Speed Digit: Controls response time of Control Valve motor.
CAUTION: Running the Control Valve too fast will
cause the system to oscillate.
C-Sd Valve Range: 1 to 9 1-Slow
9-Fast
C-FC Valve Range: 0 to 9 9-Slow
0-Fast
Brake Point Digit: Sets the percent away from target rate at which the
Control Valve motor begins braking, so as not to
overshoot the desired rate.
Range: 0 to 9 0 = 5%
1 = 10%
9 = 90%
Dead-Band Digit: Allowable difference between target and actual applica-
tion rate, where rate correction is not performed.
Range: 1 to 9 1 = 1%
9 = 9%

12
FLOW METER MODEL FLOW RANGE
RFM 5 0.05-5 GPM [0.2-18.9 lit/min]
RFM 15 0.3-15 GPM [1.1-56.8 lit/min]
RFM 55/55A 1-55 GPM [3.8-208 lit/min]
RFM 100 3-100 GPM [11.4-379 lit/min]
RFM 200/200 Poly 15-200 GPM [56.8-757 lit/min]
RFM 400 25-400 GPM [94.6-1514 lit/min]
VERIFYING FLOW RATE LIMITS:
The flow rate of spraying must be within the range of that specified for the Flow
Meter included.
5. CALCULATING "RATE CAL"
Determine the application rate at which your chemical should be sprayed. Consult
with your Dealer to ensure your spray nozzles are capable of applying at this rate.
In determining which spray nozzles to use with your sprayer, you must know:
1) Nominal Application Pressure ___ PSI [kpa]
2) Target Application Rate ___ GPA [lit/ha]
3) Target Speed ___ MPH [km/h]
4) Nozzle Spacing ___ inches [cm]
From this information, calculate the volume per minute, per nozzle as follows:
GPM [lit/min] = GPA [lit/ha] x MPH [km/h] x inches [cm]
5,940 [60,000]
EXAMPLE: 1) Application Pressure =
30 PSI
2) Target Application Rate = 20 GPA
3) Target Speed = 5.2 MPH
4) Nozzle Spacing =
20 inches
GPM = 20 GPA x 5.2 MPH x 20 inches = .35
5,940
Using GPM .35 and pressure 30 you would select tip number XR8004 from the chart
below, since it comes closest to providing the desired output.

13
Complete the entry by again
depressing the ENTER key.
Depress the keys correspond-
ing to the number you wish to
enter (i.e. "7","4","3").
The numbers will be dis-
played as they are entered.
Depress the key in which
you wish to enter data.
Depress the ENTER key. An
"E" will illuminate in the
DATA display.
CONSOLE PROGRAMMING
When entering data into the Console, the entry sequence is always the same.
NOTE: DATA MUST BE ENTERED INTO KEYS 1 THRU 6.

14
1. INITIAL CONSOLE PROGRAMMING
When you first turn on Console power after all installation procedures have been
completed, the Console will display "US" in the display window. This means you
must "calibrate", or program, the Console before it can be operated. This is a
one-time operation which does not have to be repeated. Turning OFF the power switch
does not affect the Console memory. All data is retained.
IMPORTANT: If an entry selection error is made during Steps 1-6, place the
AUTO/MAN/OFF switch to the OFF position. Depress and hold while
placing the AUTO/MAN/OFF switch to AUTO or MAN. This will "reset" the
console.
The following steps must be followed:
1) Display US (acres), SI [hectares], or TU {1000 sq. ft.}.
a) Depressing momentarily steps the display from US to SI.
b) Depressing momentarily steps the display from SI to TU.
c) Depressing momentarily steps the display from TU to US.
2) Selecting US, SI, or TU.
a) To select US, SI, or TU, step until the desired code is displayed.
b) Momentarily depress . The display will now display SP1.
3) Display SP1 (wheel drives, etc.) or SP2 (radar).
a) Depressing momentarily steps the display from SP1 to SP2.
b) Depressing momentarily steps the display from SP2 to SP1.
4) Selecting SP1 or SP2.
a) To select SP1 or SP2, step with until desired code is displayed.
b) Momentarily depress . The display will now display C-Sd.
5) Display C-Sd (Standard Valve), or C-FC (Fast Close Valve).

15
a) Depressing momentarily steps the display from C-Sd to C-FC.
b) Depressing momentarily steps the display from C-FC to C-Sd.
6) Selecting C-Sd or C-FC.
a) To select C-Sd or C-FC, step until desired code is displayed.
b) Momentarily depress , the display will now show "0".
7) DEFINITION OF BOOM CALIBRATION KEYS.
Depressing this key displays selected boom number in DATA display.
EXAMPLE: Boom 1 will be displayed as b-01.
Depressing this key after selecting BOOM CAL changes the boom number.
EXAMPLE: b-01 will change to b-02.
Depressing this key after selecting BOOM CAL changes the boom number.
EXAMPLE: b-02 will change to b-01.
Enter Boom Data:
a) Select boom b-01.
b) Use boom width as calculated under "CALCULATING BOOM CAL".
c) If a boom is not needed, enter a "0" for the length.
8) Enter SPEED CAL as calculated under "CALCULATING SPEED CAL" in .
9) Enter METER CAL calibration number in .
10) A VALVE CAL calibration number is automatically entered into the console based
on what your valve selection was during the initial Console programming settings
(C-Sd=2123 and C-FC=743). To change the VALVE CAL setting, depress for
5 seconds. The display will show the current VALVE CAL calibration number. Enter
a new VALVE CAL calibration number if desired.
11) Enter the FLOW RATE target application rate in GPA [lit/ha]{GPK} in .
NOTE: A decimal point is displayed automatically. Therefore, twenty gallons
per acre is entered as 20.0, not 2.0.

16
YOU HAVE NOW COMPLETED PROGRAMMING THE CONSOLE
The display of "CAL" will now extinguish and the Console will begin to display
data. If not, repeat procedure starting at Step 7.
2. OTHER DISPLAY FEATURES
See Appendix 9 for detailed outline of each Console key and what features are
located under them.
1) To display the set operating modes for units of measure (US, SI, TU), speed sensor
type (SP1, SP2), and valve type (C-Sd, C-FC)
a) Depress for 5 seconds and continue holding. DATA display will toggle
thru selections until key is released.
2) To display TOTAL AREA covered
a) Depress .
b) To "zero out" this total at any time, enter a "0" in .
3) To display TOTAL VOLUME sprayed
a) Depress .
b) To "zero out" this total at any time, enter a "0" in .
4) To display speed in MPH [km/h]
a) Depress .
5) To display DISTANCE in feet [m] traveled
a) Depress .
b) To "zero out" this total at any time, enter a "0" in .
6) To display actual application flow rate in GAL/MIN [li/min]
a) Place MASTER switch in ON position
b) Depress .
7) To display target application flow rate
a) Place MASTER switch to OFF

17
b) Depress .
8) To display the volume/minute being applied
a) Depress for 5 seconds.
9) To display current VALVE CAL setting
a) Depress for 5 seconds. VALVE CAL number will show in DATA
display.
10) To view any of the set calibration numbers, depress the corresponding calibration
keys.
3. SELF TEST FEATURE
SELF TEST allows speed simulation for testing the system while the vehicle is
not moving. Enter the simulated operating speed by depressing
for 5
seconds. Display will show "-tESt-". If 6 MPH [9.6 km/h] is desired, enter
6.0 [9.6] (See CONSOLE PROGRAMMING). Verify SPEED by depressing
. The
display will show 6.0 [9.6]. The SELF TEST speed will clear itself when
motion of vehicle is detected by the Speed Sensor. A SPEED CAL value of 900
[230] or greater is recommended when operating in this mode.
NOTE: To prevent nuisance clearing of self-test speed, disconnect speed
connector on back of the Console when Radar Speed Sensors are used.
4. ALARM MENU
1) To display ALARM MENU
a) Depress for 5 seconds. "A on" will show in the DATA display.
b) Momentarily depressing toggles the display between "A on" and "A off".
"A on" means alarm is enabled, "A off" means alarm is disabled.
5. OFF TARGET ALARM
Alarm sounds when the actual rate is off from the target rate by a specified
percentage. The Off Target value is preset to 30%, but may be changed to a different
number.
1) Adjusting Off Target value.