Your MT-3405M is factory calibrated to operate the
standard Micro-Trak Electric Servo Valve (8-volt).
The system is also capable of using standard 12-volt
control valves in place of the Micro-Trak Electric
Servo Valve. However, the factory setting will not
allow standard 12-volt control valves to function at
peak performance. You need to activate the special
12-volt control driver to ensure optimal
performance.
When the system will be used in English mode, the
rotary selector MUST be turned to TOTAL AREA
when activating the 12-volt servo mode.
When the system will be used in Metric mode, the
rotary selector MUST be turned to SUB AREA when
activating the 12-volt servo mode.
When the system will be used in Turf mode, the
rotary selector MUST be turned to DISTANCE when
activating the 12-volt servo mode.
Activating the 12-volt servo mode also defaults all of your
calibration settings to the factory settings.
BEFORE
activating
the 12-volt servo mode, write down
ALL
of your calibration
settings. Then you can simply re-enter them after activating
the 12-volt servo mode.
To activate the 12-volt servo mode, turn the power switch
to OFF. Turn the rotary selector to the appropriate position
(tOtal area for english mode, SuB area for Metric mode, or
DiStance for turf mode).
Press and hold the CAL, RESET and
“+” buttons on the front panel and while continuing to hold
the three buttons switch the power to ON. Once powered
up, release the three buttons. A “v” will be illuminated on the
display to indicate that the 12-volt servo mode is active. To
“lock-in” the 12-volt servo mode, you must enter calibration.
Press and hold the CAL button until “CAL” lights on the
display and the RED warning light is flashing (approximately
three seconds). The console is now in calibration mode
and the 12-volt servo mode is “locked-in”. Because this
procedure also restores factory calibration values, you
must re-calibrate the system for your application. Adjust all
necessary calibration values and exit calibration by pressing
and holding the CAL button until the RED light stops flashing
(approximately three seconds). The console will remain in
the 12-volt servo mode, even after power is cycled.
48
Appendix C
12-Volt Servo Valve (Control Valve) Calibration
To return to 8-volt mode, repeat the above procedure only
holding the “CAL” and “—” (not“+”). This will also select
English/Metric mode, and restore factory calibration values.
NOTE: do not operate system with Micro-Trak Electric
Servo valve installed when the 12-volt servo mode is
activated. damage to the servo valve will result.
OPeratiOnal nOte: Many of the 12volt control valves on
the market operate very slowly from fully closed to fully open.
the Mt3405M may operate sluggishly or be slow in control
response time. For optimal performance, the control valve
should be installed in a return line with a throttling valve
installed.
wIdTh
BOOM
SELECT
TEST
SPEEd
TARgET
RATE
AdjUST
RATE
CIRC
FLOw
CAL
SPEEd
dISTANCE
TOTAL
FLOw
TOTAL AREA
PRESSURE
FLOw RATE
SUB AREA
ON
OFF
ON
OFF
1
2
3
4
5
B O O M S
RUN
hOLd
CAL
AUTO
MAN
RESET
MT-3405
M
™
autOMatic rate cOntrOller
MANAUTO
CALhOLd
1 2 3 4 5
v
MIN
FLOw/
PRESSURE
APP. RATE
Press and hold
during power-up
“v” indicates 12-volt
control valve driver.
Turn rotary dial to “TOTAL AREA”
to activate English mode.
Turn rotary dial
to “dISTANCE” to
activate Turf mode.
Turn rotary dial
to “SUB AREA” to
activate Metric mode.
