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Module Standards
Wiring
Control shall be by DCC standard. All locos should be decoder equipped.
All part numbers specified are from the Dick Smith Electronics catalogue.
Wiring Connector standards
A) Connectors for rail power - Nylon plugs and sockets - part P5102 (2 way polarised)
B) Standard power connectors - Nylon plugs and sockets 6 Way part number P5106
C) There will be a screw connector strip (12 way part P 4855) at each end for the wire connections
When building the plugs, crimp or solder the wire into the plugs and recepticles.
The pin (male) goes into the plug housing where it is sitting free in a square hole. The recepticle pin (female) goes into the recepticle housing where it lies in the housings round hole. This is easy to see when making up the plugs.
- connections -
D) Connector pin 1 (square shape) to be wired to the outer rail whether front or rear tracks.
E) For the Aux power connector, pin 1 to be the Grounded power connection for the auxillary power. Pin 2 to be +12volt DC. Pin3 and 4 to be 16 volts AC for point motor operation. Pins 5 for throttle bus live and pin 6 for throttle bus return.
F) Power cables across the module to be at least 7.5 amp rating (Heavy Duty 24 x 0.2mm - part W 2260 in various colours. Three core power flex may be used (W 2055) or twin core lighting flex (W 2020).
Throttle bus cable to be shielded, coaxial cable, nominal 75 ohm impedance between the connector blocks. Part number W 2030 at Dick Smiths. This is based on the EasyDCC throttle bus where walkround throttles are plugged on at 6.5mm mono socket. part number P 1261.
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Alternate Throttle.
If a Digitrax LocoNet is going to be used then a RJ11, 6 conductor connector will be needed. It may be better to organise this system outside of the standard module system, perhaps as free running cables under the modules.
The connectors at the right hand front of the module (when viewed from the front) shall be Male connectors, with the left hand connector being female in orientation. There must be a pair of conducting wires in parallel to the tracks, that carry current from one end of the module to the other. This is to avoid any current loss that may result from breaks or other track problems. The track power and DCC accessory power will all come from this circuit.
The wiring loom must extend a minimum 150mm past the end of the module, to allow strain-free connection to the next module.
Diagram.
The spare connection track voltage connection point is shown for future Mountain Track support or DCC accessory decoders.
POINTS
Where a module has points, local yards and/or passing sidings, the points shall be wired as follows:
Diagram of DCC safe points wiring.
It is expected that all local yards, sidings etc. be part of the common DCC "block". Where a modeller wires local yards in "traditional" block format (for home layout use) he/she must provide a switch or switches that configure all track into the above "DCC" format on semi-permanent basis for the duration of the module meet.
Points shall be operated by either hand or using electric point motors. The power for the point motors shall be fed from either the common supply, or directly from a power source supplied by the module owner and completely separate from the common supply.
Points must be able to be actuated from the front AND rear of the modules, to allow flexibility when exhibiting the modules. For solenoid point motors, dual actuating panels can be wired as follows:
Diagram.
For motor driven points motors (e.g. Tortoise, SwitchMaster), the dual panels can be wired thus:
Diagram:Use DPDT alternate push buttons (P 7564) - Indicators (L1 - L4) show points position.
As an alternative, the points may be controlled by DCC auxilliary units. It is however still recommended that local override push buttons be implemented to allow novice users to operate points without reference to the DCC controls.
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