Question on Super Chuff Board Installation

Hi

The HD2 must be connected for the super chuffer to operate, the HD2 has a round and a square connection, The round is the positive side and the square is the ground side. The round positive goes to the goes to the chuff output on your RS commander, the square ground can go to any ground.

As for the fan motor, the plus side goes to pin 10 on the HD1, and the ground side goes to pin

6 on the HD1. Pin one is the square.

Alex

Alex is correct, but as I explained in my email, you can also simply parallel it with the chuff input on pin 5 of the Super-Chuffer.  The totally isolated output is for direct input to RailSounds boards that require a floating switch.

Either way will work.

The function of the HD2 connection is the buffered output of the chuff switch that triggers the sounds.

I got the super chuffer board to work for the smoke unit puffing action but am having a problem with the Rule 17 headlight and cab light dimming feature when the engine is stopped. I did not have to use the HD-2 connections but went directly to the R2LC board. Thanks for your help Alex and Gunrunner John. If either of you could clarify the rule 17 connections, I would be very grateful.   

I sent you an email with the details.  I'll repeat it here so that others can benefit if they do a search.

First off, if you look closely at the instruction, you'll find that the headlight needs a load.  As it turns out, a .01uf capacitor across the lighting outputs provides sufficient load, I had specified a 470 ohm resistor in the instructions, that works as well.  The capacitor is a better solution as it uses no power but still allows the triac to fire and power the LED.  This was a recent find from the folks at Lionel, when they released the new Cruise Commander Lite they mentioned it.

To summarize, wiring for Rule 17 lighting: TMCC headlight output to S-C pin 3 with a .01uf 50V cap (or 470 ohm 1/2W resistor) in parallel to frame ground, S-C pin 4 directly to the LED headlight with the LED negative lead to frame ground.

Cab Lights

The power supply on the Super-Chuffer is limited, and you also only get about 4.5V using that supply.  The S-C board is designed to light incandescent cab lights from external power.  I'd connect the cab lights to pin 8 and the other lead to track power.  This gives you about 9V on the cab lights, works well with 12V bulbs.  You can use an LED in the cab, in that case add a 330 ohm series resistor for proper current limiting to the LED.