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DCC receiver installation using motor power for notch settings and
function control for Whistle, BELL, Cylinder Blow Down, Main Sounds ON / OFF
speaker
Function key:
S1 - Whistle (momentary)
S2 - Bell
S4
S3
S1
S2
S3 - Cylinder Blow Down
S4 - Main sounds off
Connect S1 thru S4 to function control desired.
You do not need to connect functions you do
not intend on using.
S1 - Whistle function. Connect to desired
function output of module. Activate low to
play Whistle.
Some DCC systems offer a momentary
type function. It is best to use what the
system you are using suggests.
Digitrax - use F2 function
Wangro - use F3 function
ALL FUNCTION CONNECTIONS are for OPEN COLLECTOR type FUNCTIONS such as those found on DIGITRAX, LENZ, NCE, and WANGRO receivers. Although there should not be any
problem with any other type, we have not verified it. The sound unit has been designed and operated with WANGRO, DIGITRAX, and LENZ systems to verify DCC operation and compatability.
If you feel that you need longer running time when an intermittent track power input occurs simply attach a larger filter capacitor across the DC power leads (J2). Observe proper polarity. The
plus connects to pin 1 (red), minus to pin 2 (gray) - the polarity is very important since some capacitors when connected in reverse can actually blow up like a fire cracker! The larger the
capacitor the longer operating time without track power. A capacitor of 470 mfd @ 25vDC should be sufficient, too large of a value will require a very large surge current when track power is
applied. Some transmitters cannot take the large surge current on startup and will show an overload condition when powering up.
Black
White
Red
Gray
No connection is
required to J2. All of
the sound system
power is supplied
from the track via J1.
S2 - BELL function. Connect to
function
output
of
module.
Activate low to play BELL.
Suggest function as set by DCC
system you are using.
Digitrax - use F1 function
Wangro - use F2 function
ATTENTION
ADDITIONAL NOTES:
Connect motor
M
if present
DCC
track power input
S2 -> S4 - function. Connect to extra
function, if desired. When using an extra
receiver you can use either Forward or
Reverse lamp function output of module.
Normally not activated = "high".
Activated = "low" (function ON).
6
receiver motor leads (Orange / Gray is
standard practice). If you are using a
seperate
receiver
merely
connect
motor leads to pins 2 (red) and 3 (gray)
of J3. The sound system presents a load
of 480 to 980 ohms (depends on speed
set control setting).
Make sure that your receiver is operating in
the same step mode as the transmitter !!
the
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