User Manual

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b. DOUT - DOUT is the optional Detector Output. It is used to connect an auxiliary piece of
equipment, (no more than +5VDC), such as an LED or relay. Wire color optional.*
c. DIN - DIN is the Detector Input. It is connected to the insulated rail detector lead, (or the
detector lead from the Atlas Block Detector Board (BDB), (Item #233). Use green wire.*
d. YIN - YIN is the Yellow Input. This connection is used if a second insulated block is planned to
control the yellow "aspect" of the signal independent of the "timed" yellow, which is the default
setting. This is not necessary when the integrated operation is being used. Use yellow wire.*
6.
J6AIN- (Jumper 6) - J6AIN is the Approach Input. It is a screw down terminal that is used with the
"approach” lighting feature.
7.
AUX1 - Reserved for future use.
8.
JP1- (Jumper 1) - JP1 is used for “approach” lighting options.
9.
JP2- (Jumper 2) - JP2 is used for searchlight style signals that use a single bi-color LED for three color
output. Both JP1 and JP2 come from the factory with the jumper plugs not covered by a black shorting pin.
10.
LED1 - LED 1 is used to indicate whether the Signal Control Board (SCB) is powered. If lit, the boards
are powered correctly.
*Please note-Atlas recommends their readily available brand of 20 gauge, multi-stranded copper wire that comes in a variety of
colors, Item#'s 315-#319.
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DEFINITIONS
1. J1- (Jack 1) - J1 is used for multiple integrated installations only. In integrated installations, J1 is
plugged into J2 of the following board. Atlas carries a variety of modular connectors in 7',15', and 25'
lengths, (Item #'s 230-232). See page 13 for further explanation of integrated installation.
2. J2- (Jack 2) - See J1 above.
3.
J3- (Jack 3) - J3 is the connection for the 6 pin modular plug from the signal itself.
4.
J4- (Jack 4) - J4 is a screw-type power connection terminal strip. It allows stand-alone or
daisy-chaining of power leads.
a. COM - COM is the Common, or ground. In stand-alone installation, it is connected to the
power supply. Power is 6-22 volts AC or DC. While the Signal System will run on AC, Atlas
recommends DC for expansion of the Signal System. Use black wire.*
b. PWR - PWR is the positive or “hot” AC or DC Power. In stand-alone installation, it is
connected to the power supply. Use red wire.*
c. COM - The second COM connection is used in multiple integrated installations. This COM is
connected to the next Signal Control Board (SCB). Use black wire.*
d. PWR - The second PWR connection is also used in multiple integrated installations. This PWR
is also connected to the next Signal Control Board (SCB). Use red wire.*
5.
J5- (Jack 5) - J5 is a screw-type connection strip used for input/output connections.
a. RIN - The RIN can be used to over ride a green or yellow aspect to a more restrictive red
aspect. This is very useful in certain situations and for dispatch operations.