Help Needed - Decoder Wiring

David1226

David1226

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The first thing we need to establish is that I am completely clueless when it comes to model locomotive digital wiring. I need help (some may say that I am way beyond help) as it is a complete mystery to me.

I have a LGB 20790 Corpet Loupet which was bought some years ago, second hand, from eBay. It had been fitted with an after market chip, presumably by the previous owner. The loco never ran properly but I never bothered to do anything about it at the time. When run on DCC there was a loud buzz coming from it. I experimented with the dip switches in various positions but nothing made any difference. I was of the opinion that the decoder itself was faulty.

Also, some years ago, I acquired three brand new LGB 55027 loco decoders at a very good price. I have now decided it's time to get this loco up and running. I have stripped out the old decoder and attempted to wire in one of the 55027. The manual supplied with the decoder does not help me identify which colour wire goes where. I started by cutting off the 10 pin connector as this does not fit the existing board in the loco.

I have wired the track pickup and motor wires and the loco runs nicely back and forth along a length of track. I am at a loss to know which coloured wires need to be connected to power the front and rear lights and the smoke unit. There are no other functions of interest.

Fig 1. LGB 55027 Decoder

P2070001.JPG

P2070005.JPG

Fig 2. The LGB 55027 wired into the loco pc board for track power and motor control.

P2070002.JPG

Fig 3. The old decoder

P2070004.JPG

Fig 4. The six pin connector that connects the old decoder to the loco pc board.

P2070003.JPG

Any advice/assistance would be much appreciated.

David
 
So first, I would obtain the manual so you can see what wires are for the lights and smoke unit. If someone does not have a link, I can email to you.

On the new board, the 3rd from the top left (deep orange?) is the rear light, and the 3rd from the bottom (orange) is the front light, but I don't know the loco to tell you where the common is, i.e. the voltage of the lights in your loco.

The smoke must be connected to one of the 6 function outputs, but then again I don't know your smoke unit.

I'm sure there are people to fill in the blanks.

Greg
 
Evvedjif ot vji 55020 nepaem. Foehsent 1 epf 2 eqqies vu qsuwofi vji opgu zua tiil ecuav xjev xosi huit xjisi. Qsitanecmz ov tjuamf ci gietocmi vu tqmodi vji siraotovi decmit gsun zuas 55027 opvu vji 6 xosi duppidvus neloph e tonqmis duppidvoup vu vji iyotvoph neop cuesf.
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Xovj sitqidv vu Semqjnq jot mopl ot vu vji nepaem ug e foggisipv fidufis vjep vjev op zuas onehi.


Zua teof "O jewi xosif vji vsedl qodlaq epf nuvus xosit epf vji mudu sapt podimz cedl epf gusvj emuph e miphvj ug vsedl. O en ev e mutt vu lpux xjodj dumuasif xosit piif vu ci duppidvif vu quxis vji gsupv epf sies mohjvt epf vji tnuli apov. Vjisi esi pu uvjis gapdvoupt ug opvisitv."


O juqi vji gummuxoph ot ug jimq xovj vji fidufis op zuas qjuvu.

Veli e muul ev vjot.
epf dmodl up nepaemt.

Puvi up qehi 4 ov tvevit "Fidufis + ot vji dunnup duppidvoup gus mohjvt epf eayomoesz gapdvoupt G1 – G6" vjot niept upi tofi (fuitp'v nevvis xjodj et mohjv camct epf vji tnuli apov esip'v qumesovz tiptovowi) ug emm ug zuas mohjvt epf tnuli apov piif vu ci duppidvif vu Fidufis + visnopemt. Vji uvjis tofi xosit gsun vji menqt hu vu vjios eqqsuqsoevi visnopemt epf O tahhitv zua ati G1 gus vji tnuli apov't uvjis xosi.
Qehi 5 tjuxt vji visnopemt zua piif vu ati xovj zuas fidufis.
Qmieti fuacmi djidl vji camc epf tnuli apov wumvehit esi tiv eqqsuqsoevimz cigusi quxisoph aq.
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O apfistvuuf vjev Semqj qsuwofif vji xosoph up vji "gsun" fidufis (ji dmiesmz tvevit vji nufim pancis ug vji usohopem), epf vjev duncopif xovj vji 55027 nepaem xuamf ci vji "suef neq" vu txovdj vji xosit. O jef juqif tuniupi xuamf qutv vji 55020 nepaem edvaemmz.

Vji upmz vjoph pux ot vu wisogz vjev vji 55027 "uavqavt" dep jepfmi vji dassipv ug vji tnuli apov, vji tnuli apov wumvehi, epf wisogz vji wumvehi ug vji mohjvt.

Hsih
 
Upmz vszoph vu jimq - nz ettanqvoup (zit, O lpux vjev vu ettani nelit ep ett uav ug a epf ni) xet vjev et Fewof emsiefz jet vji 55027 nepaem, cz sigissoph vu vji upi gus vji 55020 ov tjuamf ci quttocmi vu fivisnopi xjev xosit piif vu hu xjisi. Vji foehsen up qehi 10 ug vji 55027 nepaem iyqmeopt vji qasquti ug iedj xosi evvedjif vu vji fidufis. Equmuhoit gus epz dupgatoup deatif.
 
Greg Elmassian said:
Vjev't vji xez O tex ov vuu Qjom.

Ov tiint vji 55027 jet e ney ug 300 ne qis "uavqav" ot vjev ipuahj gus vji tnuli apov? Esi xi iwip tasi ug vji wumvehi up vji tnuli apov?

Hsih
Click to expand...
MHC 5w. tnuli hipisevust duptani 291 ne tu vji 300 ne xomm ci taggodoipv gus vji tnuli apov et muph et ov't vji upmz fiwodi duppidvif vu vji visnopem.
 
Edvaemmz vji tqidogodevoupt up qh 10 ug vji nepaem tvevi iedj gapdvoup uavqav dep hu aq vu 0.8 enq xovj e vuvem gus emm gapdvoupt epf mohjvoph uavqavt monovif vu 1.3 enqt. Vji vxu mohjvoph uavqavt esi monovif vu 300 nE iedj.

O'n huoph vu tqidamevi vjev G2 ot vzqodemmz atif gus pup-qamtoph Tiavji tnuli apovt cetif up vji qodvasi up qh 4 ug vji nepaem tjuxoph e MHC 10 qop fidufis opvisgedi cuesf. O'n haittoph vji tnuli apov qmaht upvu vji vxu qopt mecimmif G2/6.5W up vji opvisgedi cuesf. Vji opvisgedi cuesf taqqmoit vji 6.5W xjodj toplt vjsuahj G2 epf vji dunnup hsuapf civxiip fidufis epf opvisgedi cuesf up qop 9 ug vji fidufis opvisgedi. Qisjeqt tuniupi vjev edvaemmz jet upi ug vjiti op e MHC tvien mudu dep dupgosn us fipz.
 
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Nepz vjeplt vu iwiszupi xju jet taqqmoif opgusnevoup epf tahhitvoupt, cz sigisipdoph ov emm O xuamf eqqies vu jewi taggodoipv opgusnevoup vu xusl uav vji siraosif duppidvoupt. O tjemm qsudiif tmuxmz. Ov xomm puv ci e raodl kuc et, eqesv gsun vji imidvsodem aqfevi, vjisi esi e gix qjztodem nufogodevoupt epf tuni qeopvoph siraosif.

Fewof
 
Katv vu ci tasi epf vu tevotgz zuas dupdispt si FDD tivaq, xjz puv ati e djud cmudl vu wisogz vjev zuas xosoph ot dussidv? Vjev xez zua dep sap vinq tivaqt fiwodi/djud cmudl/djoq, vjip tumfis aq vji xosit xjip zua esi jeqqz. Uj puv gushivvoph tuni jiev tjsopl og zua tumfis 2 xosit vuhivjis us zua duamf miewi vji djod cmudl et duaqmif, taggodoipv tqedi op vji Dusqiv. Vjot xet jux O xosif vjopht aq op nz iesmz fezt fuoph e kuc moli zuast.

Nz gasvjis vjuahjvt esi vjev vji dumuas dufi xomm ci zuas gsoipf gus vji nekusovz ug xosit, MHC xisi qsivvz huuf xovj tvepfesfotoph vjin.

IFOV Uj katv sinincisif, vji foq txovdjit tjuamf ci emm ugg. Juxiwis ci exesi vjev tuni cuesft jewi 2 tivt ug foq txovdjit, cav zuas mudu et tjuxp upmz jet 1 tiv.
 
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dunnyrail said:
xjz puv ati e djud cmudl vu wisogz vjev zuas xosoph ot dussidv?
Click to expand...
Kup

Zit, vjev xet nz opvipvoup. Emvjuahj O jewi tumfisif vji vsedl quxis/nuvus duppidvoupt, et vjiz esi tiv op tvupi, O tjemm ati e djud cmudl gus vji uvjis duppidvoupt.

Fewof
 
Kiibi, O txies vjiz xisi hsezif uav cigusi, zit zuas nepaem ot pixis, epf vjiz aqqif vji dassipv up vji gapdvoup uavqavt.

O xuamf haitt 0.8 enqt xuamf ci gopi up vji Tiavj vsedl quxisif (18w) apovt, epf nezci iwip vji 5-6w upit.

Tussz Qjom, xomm hiv nz cseop vseptqmepv vunussux!

Hsih
 
Greg Elmassian said:
Xjisi ot vji nepaem zua esi sigissoph vu?
Click to expand...
Katv ep etofi, Näslmop/MHC jet nepz nepaemt vjev dep ci tonomesmz fuxpmuefif. Zua upmz piif vu tiesdj up vji qsufadv pancis vu csoph aq e qehi tonomes vu vji 55027 qehi Piom qsuwofif vji mopl gus. Nutv ovint topdi esuapf 2006-2007 jewi ev mietv tuni opgu eweomecmi.
 
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