TeeJet Technologies Dynajet FLEX 7140 User manual

DYNAJET® FLEX 7140
INSTALLATION, SETUP AND USER GUIDE
Software version 1.03
with optional dual nozzle mode

Copyrights
© 2017 TeeJet Technologies. All rights reserved. No part of this document or the computer programmes described in it may be reproduced,
copied, photocopied, translated, or reduced in any form or by any means, electronic or machine readable, recording or otherwise, without
prior written consent from TeeJet Technologies.
Trademarks
Unless otherwise noted, all other brand or product names are trademarks or registered trademarks of their respective companies or
organisations.
Limitation of Liability
TEEJET TECHNOLOGIES PROVIDES THIS MATERIAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR
IMPLIED. NO COPYRIGHT LIABILITY OR PATENT IS ASSUMED. IN NO EVENT SHALL TEEJET TECHNOLOGIES BE LIABLE FOR ANY
LOSS OF BUSINESS, LOSS OF PROFIT, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS, OR FOR INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES OF ANY KIND, EVEN IF TEEJET TECHNOLOGIES HAS BEEN ADVISED OF SUCH
DAMAGES ARISING FROM TEEJET TECHNOLOGIES SOFTWARE.
Safety Information
TeeJet Technologies is not responsible for damage or physical harm caused by failure to adhere to the following safety
requirements.
As the operator of the vehicle, you are responsible for its safe operation.
The DynaJet Flex is not designed to replace the vehicle’s operator.
Be sure that the area around the vehicle is clear of people and obstacles before and during engagement.
The DynaJet Flex is designed to support and improve efciency while working in the eld. The driver has full responsibility for the quality and
work related results.

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Table of contents
DYNAJET® FLEX OVERVIEW 1
INSTALLATION 1
CONSOLE 1
INSTALLATION 2
DynaJetFlex® drivers ....................................................................................................................................................................................2
Power ..................................................................................................................................................................................................................2
Nozzle harnesses ............................................................................................................................................................................................2
CAN cables & terminators............................................................................................................................................................................2
DynaJetFlex® interface.................................................................................................................................................................................2
Boom interface module (BIM) (optional) ...............................................................................................................................................2
Pressure sensor interface (optional) ........................................................................................................................................................2
INITIAL STARTUP 5
Favorites.............................................................................................................................................................................................................5
Setup...................................................................................................................................................................................................................5
Units.........................................................................................................................................................................................6
Number of sections..................................................................................................................................................................6
Number of nozzles...................................................................................................................................................................6
Maximum pressure sensor value.............................................................................................................................................6
Nozzle selection ..............................................................................................................................................................................................7
Select nozzle series.........................................................................................................................................................7
Select nozzle capacity .....................................................................................................................................................7
Ready to pressure test the system............................................................................................................................................................7
OPERATIONS 8
Work screen ......................................................................................................................................................................................................8
On screen indicators................................................................................................................................................................8
Droplet size chart.............................................................................................................................................................8
Diagnostics .................................................................................................................................................................................................... 10
Error warnings............................................................................................................................................................................................... 11
USER SETTINGS 13
DYNAJETFLEX® NOZZLE SELECTION 15
Nozzle selection example......................................................................................................................................................................... 16
TUNING DYNAJETFLEX® 17
Tuning the control console valve........................................................................................................................................................... 17
Tuning the DynaJetFlex system ............................................................................................................................................................ 17
55295 E-CHEMSAVER® MAINTENANCE INSTRUCTIONS 18
General disassembly and reassembly.................................................................................................................................................. 18
APPLICATION RATES AT GIVEN SPEED AND NOZZLE CAPACITY 19
SPEED RANGE AVAILABLE AT GIVEN NOZZLE SIZE AND APPLICATION RATE 20

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DynaJet®Flex 7140
DYNAJET® FLEX OVERVIEW
The DynaJet Flex controller works in conjunction with an existing rate controller that regulates ow via a control valve or pump regulation to
achieve a target application rate while maintaining target droplet size(s) when a speed change occurs. This system only works with automatic
rate controllers that use ow based monitoring systems and not pressure based monitoring systems. Automatic rate controllers equipped for
both ow and pressure based control should have the pressure-based system disabled to work in conjunction with DynaJet Flex.
The independent automatic rate controller loop performs the same as it would if the DynaJet Flex controller were not present. The
DynaJet Flex controller changes ow output to each individual nozzle based upon input provided from the operator about the optimum droplet
size (pressure) for the application.
INSTALLATION
CONSOLE
The DynaJet Flex console is designed to provide years of service under typical agricultural and turf operating conditions. A tight tting
enclosure means that typical dusty environments will not cause operational problems. While occasional splashing of water will not damage
the unit, the DynaJet Flex console is not designed for direct exposure to rain. Take care not to operate the DynaJet Flex console in wet
conditions.
Figure 1: DynaJet Flex 7140 console front and back
to DynaJet interface
harness connection
Power switch
USB port
Standard RAM bracket
Bright touch screen

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CAN Start Terminator
(female)
at Boom Section 1
DynaJet Solenoids
to CAN connection
DynaJet Solenoids
Power Distribution Module
Tip Harness
DynaJet Driver
DynaJet Solenoids DynaJet Solenoids
Tip Harness
DynaJet Driver
DynaJet Solenoids DynaJet Solenoids
Tip Harness
DynaJet Driver
DynaJet Solenoids DynaJet Solenoids
Tip Harness
DynaJet Driver
INSTALLATION
DynaJetFlex® drivers
There will be one DynaJet Flex driver 78-05124 per eight (8) nozzles.
• Mount each DynaJet Flex driver centered within the eight (8)
nozzles it controls.
Power
Power will be sourced from the battery using the 60 amp fused cable
45-05943.
Power from the battery will be routed to the boom using the 6 gauge
power cables 45-05942-xx
The Power distribution modules 78-05121-xx will connect to the
45-05942-xx cables.
Power will then route from 78-05121-xx to each DynaJet Flex
driver 78-05122 using cables 45-05971-xx, and 45-05997-xx or
45-05998-xx.
Nozzle harnesses
When installing Nozzle harnesses 45-04005-xx-xx always start with
section 1 and continue to the last section.
Nozzle harnesses are designed for your specic nozzle spacing.
Always start with nozzle #1 and work left to right (while facing in
the machine’s forward direction.
CAN cables & terminators
The Start terminator 45-04006-START must be connected to the
DynaJet Flex driver 78-05124 for section 1.
CAN cables must be connected in series.
The End terminator 45-04006-END must be connected to the Driver
module 78-05124 for the last section.
DynaJetFlex® interface
The DynaJet Flex interface 78-05123 connects to the DynaJet Flex
interface harness 45-10193:
The DynaJet Flex interface harness connects to
a. The Console 75-30119 (extension cable may be used)
b. Power 12V for powering the CAN
c. CAN
d. Pressure sensor
e. Boom sense
The DynaJet Flex interface can be mounted in the cab or outside
depending upon your installation.
Boom interface module (BIM) (optional)
The Boom interface module (BIM) 78-05091 is used by the
DynaJet Flex system for boom sense.
The BIM harness connects between the BIM and the CAN.
On the BIM harness 45-10195, the Boom sense wires (or ying
leads) are supplied to tie into existing machine boom section 12V
ON/0V OFF outputs.
If not using 45-10195, some machine specic harnesses are
available.
The BIM can be mounted in the cab or outside depending upon your
installation.
Pressure sensor interface (optional)
Pressure sensor interface 78-05133 can be used if the DynaJet Flex
interface is mounted in the cab and there is a substantial distance to
the boom.
• The Pressure sensor interface should be mounted close to the
boom manifold
Figure 2: Installation diagram

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DynaJet®Flex 7140
Figure 3: System diagram
(A) DynaJet 7140 console w/RAM mount kit
90-02887
Kit includes: console and mount
(K) Sensor cable
45-05887: 3' / 1 m 45-05886: 25' / 7.6 m
(G) Pressure sensor
16-05015
(H) Boom harness
45-10178 to IC18 45-10179 to Raven 440 45-10181 to Raven Envizio 45-10186 to 15 Section boom harness
(J) CAN Terminator
45-04006-END
(L) Driver harness
45-04005-06-20: 6 nozzle, 20” / 50 cm spacing 45-04005-06-20-END: 6 nozzle, 20" / 50 cm spacing w/termination 45-04005-06-20-START: 6 nozzle, 20" / 50 cm spacing w/termination 45-04005-08-20: 8 nozzle, 20” / 50 cm spacing 45-04005-08-20-END: 8 nozzle, 20" / 50 cm spacing w/termination 45-04005-08-20-START: 8 nozzle, 20" / 50 cm spacing w/termination
(M) Nozzle extension 45-04001-40: 40" / 1 m 45-04001-80: 80" / 1 m
(I) CAN terminator
45-04006-START
(F) DynaJet Flex driver
78-05124 (E) CAN extension cable
45-04006-03: 3’ / 1 m
45-04006-07: 7’ / 2 m
45-04006-13: 13’ / 4 m
45-04006-20: 20’ / 6 m
to battery power to battery power to battery power
(C) DynaJet Flex interface harness
45-10193
(D) DynaJet Flex interface
78-05123
(B) Console extension cable
45-05900: 5' / 1.5 m 45-05901: 10' / 3 m 45-05902: 20' / 6 m 45-05903: 40' / 12 m
tobattery power

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Item Part # Description Illustration
A90-02887 DynaJet Flex 7140 console
B45-05900: 5' / 1.5 m
45-05901: 10' / 3 m
45-05902: 20' / 6 m
45-05903: 40' / 12 m
Console extension cable
C45-10193 DynaJet Flex interface
harness
D78-05123 DynaJet Flex interface
E45-04006-03: 3' / 1 m
45-04006-07: 7' / 2 m
45-04006-13: 13' / 4 m
45-04006-20: 20' / 6 m
CAN extension cable
F78-05124 DynaJet Flex driver
G16-05015 Pressure sensor
H45-10178 to IC18
45-10179 to Raven 440
45-10181 to Raven Envizio
45-10186 to 15 Section Boom Harness
Boom harness
I45-05855 CAN terminator-START
J45-05856 CAN terminator-END
K45-05887: 3' / 1 m
45-05886: 25' / 7.6 m
Pressure sensor cable
L45-04005-06-20: 6 nozzle, 20” / 50 cm spacing
45-04005-06-20-END: 6 nozzle, 20" / 50 cm spacing w/termination
45-04005-06-20-START: 6 nozzle, 20" / 50 cm spacing w/termination
45-04005-08-20: 8 nozzle, 20” / 50 cm spacing
45-04005-08-20-END: 8 nozzle, 20" / 50 cm spacing w/termination
45-04005-08-20-START: 8 nozzle, 20" / 50 cm spacing w/termination
Driver harness
M45-04001-40: 40" / 1 m
45-04001-80: 80" / 2 m
Nozzle extension

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DynaJet®Flex 7140
INITIAL STARTUP
This section will explain basic setup of the values required for
rst-time setup of a DynaJet Flex system. When these settings are
completed, initial operation and ne-tuning should be possible.
To access setup menu from the work screen, touch centre of the
screen.
1. Select from:
►Favorites – The FAVORITE icon represents favorite spray
nozzles. This function automatically stores the most recent
ve (5) nozzles chosen. Use this to quickly access your most
frequently used spray nozzles.
►Setup – The SETUP icon is used to access settings. This
will enter the conguration menu.
►Nozzle selection – The SPRAY NOZZLE icon is used to
select the spray nozzle style and capacity. Once chosen here,
the spray nozzle style and capacity is automatically added to
the favorites list.
►Diagnostics – The DIAGNOSTICS icon is used to
diagnose and operating issues of the system and booms. The
diagnostics menu is described in the operations chapter.
2. Press HOME icon to return to the main work screen.
Figure 4: Options menu
Favorites
The favorite icon represents favorite spray nozzles. This
function automatically stores the most recent ve (5) nozzles
chosen. Use this to quickly access your most frequently used
spray nozzles.
Figure 5: Favorites
Work
screen
Setup
The setup icon is used to access settings. This will enter the
conguration menu. Selections are automatically saved when
adjusted.
NOTE: Not all settings are listed below. See “User settings” section
of this guide for additional settings and details.
Figure 6: Setup
Previous page
Next page
Change value
Work
Screen

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Units
Sets the units to US (psi) or Metric (bar).
Figure 7: Units
Number of sections
Set the number of boom sections. This should match the number of
sections used on the spray controller. Range is 1 to 15.
Figure 8: Number of sections
Number of nozzles
Set the number of nozzles for each section. This value should
match the number of nozzles used on the spray controller. When
programming is complete, values should match and show in green.
Range is 1 to 120.
►Green matching values indicate a match between the number
of nozzles detected and the number of nozzles programmed.
►Red mismatching values indicate a mismatch between the
number of nozzles detected and the number of nozzles
programmed.
NOTE: Mismatched values will stop screen advancement until
number of nozzles detected and number of nozzles
programmed match
Figure 9: Number of nozzles – Match
Figure 10: Number of nozzles – Mismatch
Maximum pressure sensor value
Verify this value by looking at the pressure sensor description.
Values will be either 10 bar or 25 bar.
If pressure value displayed on the DynaJet Flex console are not
accurate compared to a mechanical gauge, adjust this value until
there is a match.
►Increasing the value will reduce the pressure value displayed
during operation
►Decreasing this value will increase the pressure value
displayed during operation
Figure 11: Max. pressure sensor value

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DynaJet®Flex 7140
Nozzle selection
Accesses the nozzle selection process to select which nozzle
is to be used. At this time only TeeJet nozzles are supported.
Figure 12: Nozzle selection
Select nozzle series
Use the green up and down arrows to highlight the correct spray
nozzle series/family.
Figure 13: Select nozzle series
Select nozzle capacity
With the correct nozzle capacity highlighted, select the HOME icon
to return to operating mode. The selected nozzle will be active
and will automatically be added to the favorites list.
Figure 14: Select nozzle capacity
Ready to pressure test the system
1. Ensure that current rate control system is operating at the optimum level. Set DynaJet Flex operating mode to manual and set PWM duty
cycle at 100%. This will make the system operate as if DynaJet Flex was not present. Use this conguration to verify the rate control
system is operating normally.
2. Keep DynaJet Flex operating mode on manual and change PWM duty cycle to 50%. Use this conguration to verify the rate control
system is operating normally.
3. Conrm boom section functionality by observing the row of rectangles below the on the operating display. Switch the master switch ON
(on rate control or other boom section control switches) and individual sections one at a time. Make sure each section appropriately
changes colour to blue. With the master switch OFF, all active sections will be grey again.
4. Start pump and ensure no leaks.
5. Verify pressure on mechanical gauge matches the digital pressure display within reason. If not, adjust max. pressure sensor value as
previously described.
6. Congure in PWM mode DynaJet Flex at duty cycle of 50%. Conrm each e-ChemSaver (ECS) is pulsating.
At this point the system is functioning. Further details for ne-tuning the system are available in the user settings section of this guide.

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OPERATIONS
Prior to operation, all settings and congurations must be
established. Please contact a dealer or TeeJet Customer service
representative with questions about system operations. TeeJet
Technologies is not responsible for misuse or incorrect operation
of the system. Settings are automatically saved when selected.
Select functions may not be visible due to OEM settings, available
equipment or sensors.
Work screen
On screen indicators
Current droplet size – Displays the current droplet size using both the
appropriate colour droplet icon and size letter code.
PWM duty cycle – Displays the current PWM duty cycle as a
percentage.
Active solenoid (dual nozzle mode only) – Displays if one or both
sets of solenoids are active.
Actual pressure – Displays the actual pressure.
Boom status
►Blue – turned on (single nozzle mode or dual nozzle mode
single solenoid active)
►Green – turned on (dual nozzle mode both solenoids active)
►Empty – turned off
Current Nozzle Selection – Displays the current selected nozzle.
Pressure gauge
►Red diamond – actual pressure
►Colours – droplet size
Operation modes
►Dual nozzle mode – user can operate in nozzle mode or
manual mode with the option to choose between the use of
single solenoid or dual solenoid.
Nozzle mode (pressure) – when the user changes the
desired drop sizes choices (via the droplet size selectors
checkboxes) the system will recalculate the desired
pressure. It will then adjust the PWM duty cycle to
attempt to attain the desired pressure in the system.
Manual mode (PWM) – The user can manually adjust the
PWM duty cycle to attempt to attain the desired pressure
in the system.
Single solenoid – one set of solenoids active
Dual solenoid – both sets of solenoids active
►Single nozzle mode – user can operate in nozzle mode or
manual mode.
Nozzle mode (pressure) – when the user changes the
desired drop sizes choices (via the droplet size selectors
checkboxes) the system will recalculate the desired
pressure. It will then adjust the PWM duty cycle to
attempt to attain the desired pressure in the system.
Manual mode (PWM) – The user can manually adjust the
PWM duty cycle to attempt to attain the desired pressure
in the system.
Droplet size selectors
► Red X and greyed out – not selected
Droplet size chart
When choosing a spray nozzle that produces droplet sizes in one
of the eight droplet size classication categories, it is important to
remember that a single nozzle can produce different droplet size
classications at different pressures. A nozzle might produce medium
droplets at low pressures, while producing ne droplets as pressure
is increased.
Category Symbol Colour code
Extremely ne XF Violet
Very ne VF Red
Fine F Orange
Medium M Yellow
Coarse C Blue
Very coarse VC Green
Extremely coarse XC White
Ultra coarse UC Black
Work screen – dual nozzle mode
Figure 15: Nozzle mode
Active
solenoids
Current operation mode
Droplet size selectors
Current nozzle
selection
Pressure
gauge
Boom status
Operation mode selector
(change to manual mode)
PWM
duty cycle
Actual
pressure
Current
Droplet size

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DynaJet®Flex 7140
Figure 16: Manual mode, single solenoid
Manual adjustment
Change nozzle mode
(single solenoid)
Single solenoid active
Operation mode
selector (change to
nozzle mode)
Figure 17: Manual mode, dual solenoid
Manual adjustmentChange nozzle mode
(dual solenoid)
Dual solenoids active
Work screen – single nozzle mode
Figure 18: Nozzle mode
Current operation mode
Droplet size selectors
Current nozzle
selection
Pressure gauge
Boom status
Operation mode selector
(Change to manual mode)
PWM duty cycle Actual pressure
Current droplet size
Figure 19: Manual mode
Operation mode selector
(change to nozzle mode)
Manual adjustment

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Diagnostics
The DIAGNOSTICS icon accesses diagnostic information.
This will display a system overview and indicate if system
components are operating properly.
Figure 20: Diagnostics
Navigating diagnostic pages
Use the next page and previous page icons to navigate between
drivers. To navigate between nozzles on the selected driver, use the
next nozzle button.
System Overview
►Page navigation – indicates current page/total pages
►Console version – displays the current software version
►Pressure sensor – displays pressure sensor status
►Boom interface – symbol indicating the boom interface
►DynaJet Flex interface – indicates the interface version and
type
►Start terminator – displays status of the start terminator
►End terminator – displays status of the end terminator
►Drivers – displays the number of drivers detected
►Nozzles – displays the number of nozzles detected
►Current errors – tracks the number of current errors
►Ignored errors – tracks the number of ignored errors
►Refresh error log – clears out tallied current and ignored errors
Figure 21: System overview
Ignored errors
Current errors
Boom interface
Page navigation
Start terminator Driver and nozzle detection
Pressure sensor
Refresh error log
Console version DynaJet Flex interface
End terminator
Driver and nozzle overview
►Driver information – displays the numeric position of the
driver, current voltage, software version, and type. Drivers
are numbered from left to right while facing in the machine’s
forward direction.
►Nozzle information
Nozzles are designated two ways:
►Nozzle number – numbered from left to right while
facing in the machine’s forward direction.
►Nozzle location – numbered from left to right while
facing in the machine’s forward direction by driver
number and nozzle number including an A or B
distinction for the solenoid position.
►Next nozzle – navigates through nozzle information
Figure 22: Driver and nozzle overview – dual nozzle mode
Driver
information
Next nozzle
Nozzle information
Figure 23: Driver and nozzle overview – single nozzle mode
Driver
information
Next nozzle
Nozzle information

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DynaJet®Flex 7140
Error warnings
If there is an active error, a warning screen will appear indicating the
offending system component in red with an error warning icon.
Refresh error log – press this button to clear the error log
Next error – press this button to view the next error when
multiple errors occur
Ignore error – press this button to disregard an error.
Figure 24: Error warning navigation
Refresh
error log
Next error
Ignore error
Terminator errors
Terminator errors indicate that the specied terminator is not
detected.
Figure 25: Terminator error
Driver module error
Driver module errors indicate that the specied driver is not detected.
Figure 26: Driver module error
Nozzle sensor error
Nozzle sensor errors indicate which nozzle is in error by displaying
the nozzle number, nozzle location and current amps.
Figure 27: Nozzle sensor error
Pressure sensor error
Indicates when a pressure sensor is not detected.
Figure 28: Pressure sensor error

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DynaJet®Flex 7140
Pressure sensor interface
Systems equipped with a pressure sensor interface will indicate
when the interface has lost contact with the can.
Figure 29: Pressure sensor interface error
Nozzle mode errors
►Minimum duty cycle error – the desired pressure is not being
maintained by the system.
►High pressure error – the actual pressure is above the high
pressure alarm value.
►Outside droplet size error – droplet size is not being maintained
by the system.
Figure 30: Nozzle mode – minimum duty cycle error
Figure 31: Nozzle mode – high pressure error
Figure 32: Nozzle mode – outside droplet size error
Manual mode errors
►High pressure error – the actual pressure is above the high
pressure alarm value.
►Low pressure error – the actual pressure is below the
recommended nozzle pressure range.
Figure 33: Manual mode – high pressure error
Figure 34: Manual mode – low pressure error

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DynaJet®Flex 7140
USER SETTINGS
If there are questions concerning the setup of the DynaJet Flex, please contact your dealer or TeeJet customer service representative
for clarication before operation. TeeJet Technologies is not responsible for misuse or incorrect operation of the system.
Setup is used to congure units, display brightness, key beep, number of sections, boom section on/off beep, maximum pressure sensor
value, minimum duty cycle, control hold delay, ne gain, coarse gain, and coarse gain on/off.
Display brightness
Sets the brightness level of the display. Range is 5% to 100% in 5%
increments.
Units
Sets the units to us (psi) or metric (bar).
Key beep
Enable/disable all beeping from console.
Number of sections
Set the number of boom sections. Range is 1 to 15.
Number of nozzles (per section)
Set the number of nozzle locations for each boom section. Range is
1 to 120.
Section number
Number of nozzle
locations in this
section
Boom section on/off beep
Enable/disable beep when a boom section is turned on or off.
Pressure sensor max.
Sets the value from the pressure sensor description. Either 10 bar or
25 bar.
Minimum duty cycle
Sets the minimum duty cycle to which the DynaJet Flex will control.
Default is 30%, minimum is 20%.
Higher values reduce the overall control range of the system.
Control hold delay
When any boom switch changes state, DynaJet Flex will not make
control adjustments for the specied time period. Range is 0.0 to
10.0 seconds. Default is 1.0 second.

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DynaJet®Flex 7140
Coarse gain
This is the more aggressive gain setting and will have the largest
impact on the stability and function of the DynaJet Flex system.
Coarse gain makes major adjustments to duty cycle to attempt to
bring actual pressure back to the target. A coarse gain setting that is
too high will result in pressure oscillation. Range is 1 to 20. Default
is 4.
Fine gain
Allows the control system to make minor adjustments when close to
the target, with the goal of stable pressures and minimal overshoot of
target. Range is 1 to 20. Default is 6.

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DynaJet®Flex 7140
DYNAJETFLEX® NOZZLE SELECTION
Selection of the proper spray nozzle for use with the DynaJet Flex system is much like selecting the spray nozzle for a traditional spraying
operation. Along with the extra application exibility, DynaJet Flex brings a few other nozzle-related considerations that will be summarized below.
1. Duty cycle
a. DynaJet Flex controls nozzle ow rate by varying the portion of time that each nozzle is ‘on’ vs. ‘off’. The on time is referred to as duty cycle.
The range of duty cycle available is typically 30% to 100%, meaning that the nozzles on the machine will have the approximately 30% to
100% of their rated ow capacity.
b. With the DynaJet Flex system:
• Standard mode spray nozzle ow capacity = spray nozzle size x duty cycle
• Dual nozzle mode spray nozzle ow capacity = spray nozzle size x duty cycle x 2
c. By varying the duty cycle, the DynaJet Flex is essentially varying spray nozzle capacity on the y. When more pressure is required, the
nozzle capacity (duty cycle) is reduced. When higher nozzle capacity is required, the duty cycle is increased.
d. Although the operator has a much more exible and forgiving application system with DynaJet Flex, care should be taken to select
spray nozzles that give the best possible results.
e. When selecting a spray nozzle, review the DynaJet Flex nozzle selection charts and select a spray nozzle capacity that produces the
target application rate at a duty cycle of about 70% when running at expected travell speeds. In other words, choose nozzle capacity
and desired pressure/droplet size closer to the high end of the speed (or rate) range than to the lower end. This will provide plenty of
adjustment range for DynaJet Flex to reduce duty cycle when travell speed slows, while also providing additional capacity if travell
speed increases above the planned speed.
• The default setting for minimum duty cycle is 30%. This means the system will not adjust the duty cycle below 30% ‘on’. While this
setting can be set as low as 20% by the operator, the higher default value provides a more uniform application at lower speeds.
2. Spray nozzle selection
a. The DynaJet Flex system is not compatible with all spray nozzles. Approved nozzle families are XR TeeJet, DG TeeJet, Turbo TwinJet,
Turbo TeeJet, and Air Induction Turbo TwinJet 60.
b. Different nozzle styles have different droplet size characteristics across the range of operating pressures. The spray nozzle style should be
selected based on the desired droplet size at the pressures expected to be in use for your application.
c. Always use spray nozzles with 110° (or wider) spray pattern. These spray nozzle part numbers will typically include the 110 in their name –
for example TT11006VP or XR11006-VS. 80° spray nozzles are not recommended with DynaJet Flex.
3. Spray Height
a. In order to achieve the best possible spray coverage, make sure to keep spray height at or above 20″ from the nozzle to the target.

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Nozzle selection example
These coloumns show ow rates at various
pressures. The Delta P represents pressure loss
through the DynaJet Flex solenoid valve, and the
resulting nozzle PSI and ow show actual values at
the spray nozzle.
These coloumns show droplet
sizes for different styles of spray
nozzle at given pressures. Use
these coloumns to choose
the best nozzle style for your
application.
Just like a normal nozzle chart, these coloumns show rates
available at given speeds. The only difference is the range of
values that corresponds to the range of ows available with
DynaJet Flex.
If the operator wants to apply 15 GPA at 10 MPH, he would look in the 10 MPH coloumn, and nd the row that shows 15 GPA with room above and below to compensate for
higher and lower speeds that may be experienced in the eld. In this case a TT11006 at 40-50 PSI will work very well.
The next consideration is droplet size. The chart shows that a Turbo TeeJet (TT) nozzle will give Very Coarse (VC) droplets in this pressure range, and a Turbo TwinJet
(TTJ60) will give Coarse (C) droplets. The benet of the TT is that the operator could select droplets from VC to M all at the same rate and speed.

17 www.teejet.com
DynaJet®Flex 7140
TUNING DYNAJETFLEX®
Tuning the control console valve
The following procedure will help determine the rate controller valve gain that is the most aggressive value that will work over all pressure
ranges with the DynaJet Flex in manual mode set to different duty cycles. The most aggressive value will be found by increasing the valve
gains or other controller specic settings until system oscillates and then decrease those setting to make sure the system is stable at that
value.
The tests will conrm that pulsing of ow through the solenoids doesn’t affect rate controller stability even when duty cycle is below 50%.
Ensure product pump is providing ow greater than the maximum demand of the system.
Adjust target application rate or machine speed to deliver minimum and maximum operating pressures for the nozzle in use under the
following conditions (rate control must be operating in automatic mode for these tests):
1. DynaJet Flex duty cycle set to 100%.
i. Set rate controller gains/values with operating pressure at minimum. Controller gain value at minimum pressure: _____________
ii. Set rate controller gains/values with operating pressure at maximum. Controller gain value at maximum pressure: _____________
2. DynaJet Flex duty cycle set to 50%.
i. Set rate controller gains/values with operating pressure at minimum. Controller gain value at minimum pressure: _____________
ii. Set rate controller gains/values with operating pressure at maximum. Controller gain value at maximum pressure: _____________
3. DynaJet Flex duty cycle set to “Minimum Duty Cycle” value (default is 30%)
i. Set rate controller gains/values with operating pressure at minimum. Controller gain value at minimum pressure: _____________
ii. Set rate controller gains/values with operating pressure at maximum. Controller gain value at maximum pressure: _____________
4. Set rate controller valve gain to the highest value that will work with all previous scenarios. This will be the lowest gain value found in the
previous 6 tests. This value should not need to be changed again.
5. If the system does not control acceptably with this gain value at all manual duty cycle settings, then something is wrong with the system
that needs to be resolved before trying to tune the DynaJet Flex System.
Tuning the DynaJetFlex system
The following steps will use coarse gain and ne gain to tune the DynaJet Flex system. Coarse gain will be increased until the system is
oscillating across the target pressure. Once that is occurring then ne gain will be increased to smooth/eliminate the oscillation. A coarse gain
too low will cause the system to be stable but slow to get on target. A coarse gain too high will cause the system to overshoot target when a
speed change happens. A ne gain too low will allow the system to continue to oscillate. A ne gain too high will cause the system to oscillate
extremely rapidly and cause a thumping in the system. The lower the target pressure, the higher the ne gain can be set, so the tuning needs
to be done at highest pressure/ smallest droplet size that the machine will typically be operating. Speed changes will be required for the best
tuning possible. Simulated speed changes are preferred, but driving the machine is ok. Steady speeds are required.
1. Set console to nozzle mode and choose the nozzle being used.
2. Set coarse gain to 2 and ne gain to 2.
2.1 Disable jump point by setting value to 0.
2.2 Choose the highest pressure/smallest droplet size that will typically be used
2.3 Run the system and view the bar on the DynaJet Flex when changing speed. Increase the coarse gain until system is oscillating
across target pressure. Most machines operate with a setting between 4 to 6 for coarse gain.
3. Once coarse gain is determined, then using the same speed changes as before begin increasing ne gain until the oscillations stop and
the target rate and target pressure are stable. Most machines operate with a setting between 8 to 12 for ne gain.
4. After coarse gain and ne gain have been set, then select a lower pressure/larger droplet size and run the machine using the same
speed changes. Typically, the settings will not have to be changed for the lower pressure applications.
5. If more than one nozzle size is going to be used on the machine, then run a test with the same values for coarse gain and ne gain for
the other nozzles. Always check at the highest pressure/smallest droplet size that will typically be used.