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IRDOT-2 |
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The
IRDOT-2 has a built in relay to provide single pole change-over
relay contacts as well as the "train detected" LED for wiring to
the control panel. |
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The
diagram shows that, with no train detected, the relay connects terminals 2
and 4. |
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When
detecting a train, the relay connects terminals 3 and 4. |
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These
contacts are electrically separate from the IRDOTs' power and form a
train-operated switch. |
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The relay
contacts can handle up to 2 amps of current. |
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AUTOMATIC
STOP: The
IRDOT-2 gives precise stopping of trains in hidden sidings. |
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When
the front of the train is detected the relay breaks the electrical
connection to the track. A push button switch ("on" when
pressed) reconnects the power. |
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The
advantage of this, compared to using a dead section, is that the train
stops when the front is detected by the IRDOT-2, and an LED is lit on the
control panel to show the train's presence. |
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The
isolation section can be any length. The number of wheel pickups or
whether the engine is at the front or rear of the train does not affect
the stopping position. |
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Wiring
the IRDOT-2's LED to the control panel will show which loops and sidings
hold trains. |
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ALTERNATIVE
TO REED SWITCHES AND MAGNETS: The
IRDOT-2 relay can replace reed switches. It will operate other electronic modules intended for reed switch operation. |
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COMPUTER
INTERFACE: As the relay contacts
are electrically isolated, it is safe to use them with computer
interfaces. This allows a computer to "know" which tracks are
empty and when a train has arrived |
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SWITCHING
SLOW MOTION POINT MOTORS: As slow motion point motors require a
low current applied for a long time they can be operated by the
IRDOT-2. For very short trains, light engines etc.,
it may be
necessary to stop over the IRDOT-2 to give sufficient time for the point
to switch.. |
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SPECIFICATION |
| Voltage |
12
to 16 volts, AC or DC |
| Maximum
current consumption |
40
m A |
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SIZE |
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Inches |
Millimetres |
| Length x Width |
3.45 x 1.2 |
88 x
30 |
| Height (
Board to highest component) |
0.7 |
17 |
| Height of
infrared components |
0.9 |
22 |
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