TC-26B Vehicle DetectorTC-26B Vehicle Detector
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INSTALLATION INSTRUCTIONS
Section 1
General Description
The Model TC-26B is a microprocessor controlled
vehicle detector with a selectable range (long or short).
It is designed to trigger the operation of a traffic
controller. The TC-26B will only respond to motion in
one direction (approach or depart only—selectable)
which makes it ideal for long-range detection at
intersections. A microprocessor analyzes the reflected
microwave energy and responds to motion in the proper
direction. The TC-26B generates an extremely low
power microwave beam aimed to cover the same area
normally covered by a loop detector system. It is less
expensive to install and less susceptible to damage and
malfunction from ice, salt and heavy vehicular traffic.
The TC-26B operates on much the same principle that
police radar uses. The unit transmits a low power
microwave signal, some of which is reflected by a
moving target, such as an automobile or truck. Larger
vehicles, such as semi-trucks, reflect more energy than
automobiles and can be detected at further distances.
Since the TC-26B uses microwave signals as its means
of detecting a moving target, it is not affected by air
motion, temperature and humidity changes, or high
frequency sounds.
Wiring -
Operating voltage is 12V to 24V AC or DC and is usually
supplied through a transformer. Current consumption of
the unit is 0.075 Amps.
NO AMPLIFIER REQUIRED!
NOTE: 18V, 20VA transformer included
Wiring of the cable is as follows:
Red & Black = 12V to 24 V AC/DC (no polarity)
Brown = Relay COM
Org = Relay N.O.
Yel = Relay N.C.
NOTE: Relay contact designation is with power
applied.
CAUTION: Do Not apply 120V AC primary
power to the transformer until all
secondary wiring is complete.
NOTE: When power is applied, allow 30 Seconds of
warm-up before testing sensor
Section 2
Installation
The TC-26B vehicle detector will perform best when it is
aimed directly at traffic. This can be accomplished by
mounting the unit at the typical mounting height of 14’ to
24’ and aiming the sensing head so it can “view” the
traffic coming toward or moving away from the unit.
Side-fire mounting is also acceptable.
The TC-26B is mounted with 2 lag bolts through 2 - ½”
prepunched mounting holes, or by banding to the poles.
To remove the fastening bracket from the sensor, take
out the ¼-20 bolt holding the bracket to the hinge. Using
the bracket as a template for locating screw holes, mark
and drill the pole or band the bracket and refasten the
sensor to the bracket with the ¼-20 bolt removed earlier.
For more information, call us toll-free at (800) 842-2545.
Alignment
Align the TC-26B by adjusting the range control and the
aiming angle. The range control allows the detection
pattern to be varied to sense vehicles at a maximum of
200’ for cars, and 350’ for semi-trucks or other large
vehicles. The Direction switch allows the sensor to
detect traffic traveling either toward or away from the
sensor. Please see Figure 1 for proper switch settings.
To adjust the sensor’s head angle, loosen the ¼-20
hinge bolt. This allows vertical movement of the TC26B. When alignment is complete, make sure that all
bolts and screws are tightened.
Operation
REMINDER: When power is applied, allow 30
Seconds warm-up before testing sensor.
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Section 3
!
NOTE: This equipment has been tested and
found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to
provide reasonable protection against
harmful interference when the equipment is
operated in a commercial environment.
This equipment generates, uses, and can
radiate radio frequency energy and, if not
installed and used in accordance with the
instruction manual, may cause harmful
interference to radio communications.
Operation of this equipment in a residential
area is likely to cause harmful interference.
Note: The manufacturer is not responsible
for any radio or TV interference caused by
unauthorized modifications to this
equipment. Such modifications could void
the user’s authority to operate the
equipment.
Technical Data
Model ..............................TC-26B
Operating Frequency.......10.525 GHz +/- 25 MHz
Detection Method ............Microprocessor-Analyzed
Doppler Microwave
Detection Pattern Adjustable- (see Fig. 2)
Detection Angle...............Adjustable, Tilt & Swivel
Detection Mode ...............Continuous with Motion
Response Time ...............0.150 seconds
Time Delay......................Adjustable, 0-5 seconds
Power Requirements .......12V to 24V AC or DC
Wiring Requirements.......Four-Conductor Cable
(see Wiring Section, Pg.1)
Current Consumption.......75 mA (0.075 Amps)
Power Consumption.........1.8 watts max. @ 24V
Relay Contacts................Form C, rated at 3 amps
Mounting .........................Heavy-duty bracket,
predrilled & slotted for pole mount
Temperature.................... -35°F to 165°F
(-37°C to 75°C)
Weight.............................3 lbs. (1.4 kg)
Size.................................7" x 4" x 4"
(17.8cm x 10.2cm x 10.2cm)
Color ...............................Gray, Powder Coated
Enclosure ........................Aluminum with stainless
steel hardware
Section 4
Warranty
MS Sedco guarantees this product to be free from
manufacturing defects for one year from date of installation.
Unless MS Sedco is notified of the date of installation, the
warranty will be in effect for one year from the date of
shipment from our factory. If, during the first year, this motion
detector or support device fails to operate and has not been
tampered with or abused, the unit can be returned prepaid to
the factory and it will be repaired free of charge. After one
year, the unit will be repaired for a nominal service charge.
This limited warranty is in lieu of all other warranties,
expressed or implied, including any implied
warrantability of merchantability, and no representative
or person is authorized to assume for MS Sedco any
other liability in connection with the sale of our products.
All warranties are limited to the duration of this written
limited warranty. In no event shall MS Sedco be liable for
any special, incidental, consequential or other damages
arising from any claimed breach of warranty as to its
products or service.
8/28/01
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