Specifications

install stranded wires by stripping insulation back 3/16",
place wire in hole, run screw down to clamp in position.
Make sure wires do not short to adjacent terminals!
12VPS #369
fixed 14-20
VAC power
G
AP
pwr(+)
GAP - cut rail leaving an air gap or use
plastic / fibre insulators.
expansion
connector
Sensor Input: pass wire
THROUGH HOLE
(do not strip insulation)
pwr(–)
G
AP
N/C
C
N/O
N/C
C
N/O
sect 'A'
sect 'B'
Mounting standoff,
use #6 wood
screw. 3/unit
r u n s e c t i o n
track
power
a dozen or so
Trak-DT type
detectors can be
operated from
one 12VPS
regulator.
Reverse
Reverse
41
Automate those nasty reverse loops with the TRAK-DTL. This is
useful in both conventional DC operation or carrier control. Use the
TRAK-DTL to automate the reverse polarity function required to
operate an automatic back-n-forth. You can also use the TRAK-DTL
to automate the control of polarity reverse type switch machines. You
might also want to sequence things in a certain manner, i.e.
automate station stops so that every other train must stop at the
station. Whatever you want to operate on an every other occurrence
the TRAK-DTL will do it for you!
The TRAK-DTL is a variation of current detection (TRAK-DT) that includes a latching circuit to hold the relay position. As a
result of this latching circuit, each time current flow is sensed by the detection coil, the TRAK-DTL changes the state of its relay.
When current ceases to flow for a few seconds, the TRAK-DTL is then ready for the next sense of current flow to change the
state of its relay. This event is repeated again after a few seconds of no current flow occurs.
Since the relay has double pole, double throw (DPDT) contacts it can be wired as a polarity reversing switch. This allows the
TRAK-DTL to be used to automate reversing loops or to provide a continuous "back and forth" operation on a single track such as for a
trolley car or on a work bench, utilizing DC track power. Reverse loop's are normally broken into 1/3 sections. This way when the engine
enters the "sensed section" the relay would immediately reverse but the TRAK-DTL will continue to sense current flow until the entire
engine clears the section of track. This way a caboose that has lights with no other cars in the train drawing any current, you would not
re-trigger the TRAK-DTL causing a double reverse. The TRAK-DTL can also be used to create every other type of operations such as
alternating station stops. Drawings utilizing the TRAK-DTL can be found in our Wiring Guide.
The TRAK-DTL can also be used to set up sequential functions by having the relay enable other devices when activated and disable these
devices when relaxed. A typical way of forcing block or timed stops is to merely turn on a ballast lamp while passing the lamp power
through the other detectors sense coils. All kinds of automation and wiring can be done with the TRAK-DT family with simple wiring of the
logic you want your trains to do! The RED LED provides for an easy visual indication for activation.
It is essential that a "regulated" power supply of 12 VDC be employed. This 12 VDC power is only for the electronics and has absolutely
nothing to do with track power. Failure to use a "regulated" 12 VDC can cause erratic functioning or actual destruction of the TRAK-DT
which is not covered under warranty. The 12VPS (item 369, pg 35) is ideal for this function.
Item # 366
wire
passes
through
hole in
sense coil
RED LED
sense
indicator.
TRAK-DTL
for: SEQUENTIAL FUNCTIONS
AUTOMATIC LATCH
AUTOMATIC POWER REVERSE