19
The magnets are attached to a wheel hub or drive shaft and
the speed sensor is mounted directly over the magnet. When
the wheel or drive shaft begins turning, a speed impulse is
sent to the MT-3405D console every time a magnet passes by
the tip of the speed sensor. For the speed sensor to operate
properly, the spacing between the magnets and the tip of
the sensor must always remain constant. Before permanently
mounting any parts, be sure that the location you have
selected will meet the requirements shown in
Illustration to
the right.
NOTE: Observe magnet polarities (see previous section).
Installation
(cont)
Attaching the Speed Sensor
Magnet
Sensor
(Green body)
1/4” to 1/2” air gap
3/8” nuts
45° max.
Bracket must
be rigidly
mounted.
Sensor assembly must
not be mounted
more than 45° from
per pen dic u lar
Connecting the Speed Sensor Cable
The speed sensor cable has a GREEN sensor body and mates
with the 3-pin connector which is marked with a yellow cable
tie. The speed sensor and the flow sensor are identical, but
must be connected to the proper harness connector. The
speed sensor always connects to the 3-pin M/P connector
with the YELLOW tie and flow sensor always connects to the
3-pin M/P connector with the GREEN tie.
See MT-3405D
Wiring Diagrams on pages 12 and 14.
The optional Run/hold sensor, also uses the same type of
connector as the speed and flow sensors. However, the Run/
hold sensor has a GRAY tie near the 3-pin connector, the
sensor body is BLACK, and it always connects to the main
harness lead with the GRAY tie.
See MT-3405D Wiring
Diagrams on pages 12 and 14.
* See Appendix L for required adapter if using the remote
speed connection on the Ch2 harness.
SENSOR IDENTIFICATION CHART
SENSOR
SENSOR BODY COLOR
MAIN HARNESS TIE COLOR
Speed
Green
Yellow
RPM
Black
None
Run/Hold
Black
Gray
Vansco Radar Speed Sensor
Astro 5 GPS Speed Sensor
Speed Sensor Options
In addition to the standard Hall-effect magnetic speed
sensor, the MT-3405D may be interfaced with a va ri ety of
other speed sensing equipment. Several options are listed
below.
Astro Series or Other GPS Speed Sensor Interfaces
The MT-3405D may also be used with most GPS speed
sensors that output a pulsed signal, such as the Micro-Trak
Astro II and 5, SkyTrak or Dickey-John GPS speed sensors. An
adapter cable may be required.
Vansco™ Radar Speed Sensor
The Vansco radar speed sensor uses a microwave (radar)
signal to deliver a reliable, accurate speed signal for electronic
equipment. It features state-of-the-art electronic design/
manufacturing, rugged aluminum housing and complete
testing and certification.
Radar Interface
The MT-3405D may also be interfaced with most popular
radar ground speed sensors. An adapter cable is re quired for
proper interface.
SEE APPENDIX H FOR LIST OF ADAPTER CABLES FOR RADAR.
Contact a Micro-Trak sales representative for de tails on
any of these products, or call Mi cro-Trak Systems, Inc. at
1-800-328-9613.
Summary of Contents for DUAL CONTROL MT-3405D
Page 1: ...REFERENCE MANUAL DUAL CONTROL AUTOMATIC RATE CONTROLLER MT 3405D ...
Page 47: ...Appendices 47 ...
Page 82: ...82 NOTES ...
Page 83: ......