8
If the input to the signal lamp is
12 volts use terminal 11 as the common.
This terminal provides a constant voltage
and the lamp terminals are
grounded
to
turn on the lamps.
Pins 12 and 13 are the Lamp output signals.
These are open circuit when OFF and
grounded when ON.
Note that the lamp output voltage is the
same as the input voltage, but converted to
DC. For example, a 12 VAC or 12 VDC input
will provide a 12VDC lamp output, etc.
Flashing the lamps
Signal lamps will enter a
slow blinking state
after a few minutes to give your RR a very
realistic look.
The YardMaster can be heard “clicking” as the flashing feature is operating.
See the programming section for details on disabling this feature. Some
signal lamps already have built-in electronics to do the flashing so this feature can be
turned off if needed by programming a different operating mode.
If direct driving LED’s use pin 14 as the
co5 volt voltage source and wire
as shown for either separate LEDs or a
single dual color LED.
A 220 ohm resistor is required to provide the
current limiting and prevent them from damage.
When controlling flashing RR crossing signals use
separate red LEDs and program accordingly.
LEDs may be available free from RR Concepts.
Check the order page for availability.
Signal Lamp Connections
+ voltage
+5 VCD
notch
Common Anode
Bi-color RED/GREEN
LED
Lamp1
Use this hookup for Shiloh
Signal lamps.
Lamp 2
+12V Output
LED direct connect
notch
The YardMaster can control both 12 volt lamps and 5 volt LEDs synchronized with the
turnouts and relay. When programmed for
crossing light control
the lamps will alternately flash
when triggered.
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