Large Scale Central

Bachmann C19 DCC Conversion to DC

Electronics
#21

I’ll defer to Bob or Stan as I have no experience. Looks to me that it is pretty much plug and play…

This is the 57002DSS…

You should be able to get documentation free from the manufacturer.

#22

Wrong thread - sorry.

#23

Keith

The reason I asked the wiring question is because the Train Engineer documentation does ot define which pins they use, Note they also specify 12-24 Pure DC on the track or battery power.

From the limited documentation my best guess is as follows.

You should be able to plug the Train Engineer board into the Bachmann C19 main board socket with no problems using either battery power of constant DC on the track. Just make sure the j1 pins (motor and track pins) are plugged into J1 and not offset.

Features supported

  1. Motor control - no problem should work fine

  2. Headlight, tender light - The locomotive requires DC on the + and - pins. The documentation does not say if the Train Engineer supports this or not. If not simpy put a rectifier in and connect it between the track and ± (best gues is that it does but not sure_

  3. Sound - may work or may require the speaker be unpluged from the Bachmann main board and plugged into the Train Engineer board

  4. Chuff - not sure if the sound system suppport a chuff on not.

  5. Cab light Class lights, firebox flickr and smoke - best I can tell the Train engineer does not support the pins on J2 or the smoke pin. There are plugs on the train engineer that you can wire to the locomotives solder connections to make thse functions work.

Bob will have to confirm this with his installl.

Stan

#24

Stan (and Bob, too), thanks for all your help. My RX board came in the other day so I guess it’s time to test it out. Partially to answer some of your points, on my model, the speaker is not hooked up, but the connector on the speaker wire fits perfectly with the speaker wire that comes with the RX board. so I should get the sound without a problem (one can hope). And I’m hoping this will give the chuff as well. The RX comes with it’s own small smoke board, so, if I want to use the smoke, I’ll have to figure out that wiring. When I get this all tested (hopefully tomorrow), I’ll let everyone know the results, including what lights just work or which ones I may have to rewire to the RX board.
Again, thanks for all your help.
Keith

#25

Dont use the smoke board that came with your Train Engineer. Instead simply wire the smoke function to one of you function inputs, On the C19 the smoke function is simply another low current function.

Stan

#26

If the wiring in your tender is unmolested, there shouldnt be any problem just plugging the Revolution RX and off you go. I have to go dig out my yellow C19 and see if I did any modifications for the chuff. I dont BELIEVE so, but it was a while ago so I may just be misremembering.

#27

A big thanks to everyone, especially Bob and Stan. I am a novice at this electronic stuff so I was nervous this morning. But I said “Oh Well”. I put the board in, hooked up my test track, turned on the power, updated my TE transmitter, pushed the link button and selected Link on the TX, and got a Successful link. Went back to the main menu, got some noise out of the tender, increased the speed, and the wheels turned!! And I got the chuff that increased the frequency as I increased the speed of the locomotive. And I have the headlight! I don’t have the reverse light at the back of the tender, but I’m not concerned about that.
Bottom line, I don’t know why I was so nervous about this. It ended up being very simple.
Again, thanks to everyone.
Keith

#28

Glad it worked out for you.

1 Like
#29

Keith

Great Just a few questions so we can help others.

  1. What position are the switches set for behind the firbox door?

  2. Do you have control on the cab light and class lights.

  3. is the chuff accurate at 4 chuffs per revolution no matter the speed (i.e i the chuff from the senors or is it fan an auto chuff generate by your sound board.)

  4. did you plug the speaker into the Train Engineer board of leave it plugged into the bachmann main board.

Thanks

Stan

#30

Stan, here are the answers to your questions:

  1. Smoke switch - off, CAB LED - DC, MAKER Box - DC
    So I have the cab light on and I get fire flicker.
  2. The Cab light is on (although dim) and the class lights are on (a light on each side of the chassis, lower part, near the front). I do not have control of the backup light on the rear of the tender.
    Makes no difference how I have the HD Dir set on the TE transmitter, either Nor or Rev, the lights behave the same.
  3. The chuff is coming from the TE RX board. I change the DCC board setting to either 2 chuffs or 4 chuffs has no effect on the chuff speed, so it is coming from the RX board.
  4. The TE package comes with a wire connector for the speaker. The speaker wire from the existing speaker plugs nicely into the TE speaker wire and then the TE speaker wire plugs into the RX board. The speaker works fine.
    Note: All the sound functions on the RX board (bell, horn, volume control) work just as expected. There is a wire to plug a reed switch into the RX board so my next task is to add a reed switch to the bottom of the tender. I already have the magnets on the track to trigger the horn.
    This seriously was much easier than I expected.
    Keith
#31

BTW, in the tender, the switches are set as
Motor - ON
Polarity - NMRA (not Large Scale)
Pickup - TRACK
I didn’t change any of these switches.

Let me know if you need anything else.
Keith

#32

Well, that’s the beauty of plug-n-play. :wink:

#33

Keith

Thanks

Let me try to explain the switches,

The 3 switches behind he smokebox are worded DC, OFF, DCC
The proper wording should be ON, OFF, Switched by the devoce in the socket

If you want con control these function you will need to place them to the position DCC (switched by the Train Engineer in the socket.

In looking at the wiring diagrams I strongly suppect that the Train Engineer does not support the Pins on J2 (the second row of pins) But it does have cunction suppport through the plugsins on the rear of the board,

If I am correct to control these function using the train engineer you need to connect a wire from the plugins to the appropriate solder connection on the main board,

I also suspect that the train engineer does not support an external chuff input since Aristocraft never had one. Instead I believe it has a chuff based on the voltage you are providig the motor. I believe you can adjust the chuff rate within the train engineer.

Hope that helps

Stan

#34

Hi Stan,
Just an FYI. I changed the 3 switches behind the smokebox to OFF, DCC and DCC. I no longer have the fire flicker, the cab light or the marker lights. So I switched it back to DC and the lights came on. And you’re right. The chuff is coming from the motor voltage.
Keith

#35

Keith

Just as I thought, If you want the ability to control when these lights are on or off you will need to connect a wire from a solder pad on the Bachmann main board to the Function input of the Train engineer.

Stan