Azatrax TS2 Installation Manual

Installation Guide
What it is:
The TS2 operates one or two trackside block signals (one in
each direction) on one track to simulate the block signals of a real railroad.
Trains are sensed at the signal location using infrared sensors, independent
of the room lighting. The TS2 does not require the rail to be cut into
isolated blocks and does not require resistor wheel sets on the train cars.
Multiple TS2 units may be linked together so that successive block signals
along the track will be properly coordinated.
LED signals must be used. Signals with incandescent bulbs need solid
state relays such as Azatrax model SSR6 between the TS2 and the signal.
Most types of LED block signals may be used. The polarity of the signals
(common anode vs. common cathode) is automatically detected by the TS2.
Limitations: The TS2 only senses trains as they pass the block boundary. Two TS2's, one at each end of a block, tell each
other when a train enters or leaves a block, so they can deduce when the block is occupied or clear. Because the TS2 does
not actually sense the physical presence of a train in the block, it can give false indications if part of a train becomes
uncoupled and is left behind in the block, or if a train enters or leaves the block by some route other than the two ends that
are monitored by the TS2's. To compensate for this, see 'Interlocking Functions' on pg. 5.
Kit contents:
★
Circuit board
★
Infrared light-emitting diodes (IR LEDs) with orange & white wire leads
★
Infrared photo receivers with green & yellow wire leads
★
Plastic mounting tubes. The tubes are for protection of the sensor leads and to provide mounting support. They are not
essential for detector operation and may be shortened or removed entirely to best fit your situation. Just use caution to
avoid damaging the leads.
★
1,000 ohm resistor for interlocking functions (pg. 5)
★
Mounting screws
This guide assumes an east/west direction of the track.
Install the sensors: Choose a location for the signals.
If using only one signal for one-way traffic, install only
the east-bound signal. Each sensor pair may be installed
in one of two different ways - 'Across the Track' or
'Reflective.'
Across the Track sensing: The IR LED is positioned horizontally on one
side of the track, and the IR photo receiver is placed on the opposite side.
A train is detected when it blocks the light path between the LED and
photo receiver. The distance between the LED and photo receiver can be
up to 18 in. (46cm), or more with careful alignment. Placing the sensors at
an angle across the track avoids possible detector flickering caused by the
gaps between cars.
Tip #1 - If mounting the sensors vertically as shown here, slide the plastic tubes away from the sensor
then carefully bend the leads to a right angle. The leads are somewhat brittle, bending them more than
two or three times may cause a break.
Tip #2 - Locate the photo receiver so it faces away from bright lights or sunny windows. Use scenery or structures to
conceal the sensors and shade them from room lighting.
© 2019 Azatrax.com
Azatrax Model Railroad Track Signal Control - Single Track
TS2 installation guide - single track
east link LE
east stop
west stop
west link
Installation
west
sensor
W
eastbound
C
SE
power
EK
east
sensor
EF
X
R
WK
west
TS2
sensor
WF
SW
C
LW
W E
westbound
signal
signal
TS2
G
Y
R
M
Rtn
Rtn
M
R
Y
G
+G
+R
4a
35 - 50 scale ft
(10 - 16 scale m)
E
east
sensor
pg. 1 of 6