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I have a legacy engine #6-34732 whenever i put the engine on track 2 & power up that track , it starts up without me even addressing it by it's ID # & it doesn't respond to any commands,if i take the engine & put it on another loop & power up that loop it doesn't respond until i address it by it's ID# & it responds to all commands, also if i change the switch on the power master from conventional to command on track 2 the engine works perfect. This engine works perfect on all loops except loop 2, none of my other command control  engines have any problems on track 2. Anyone have any suggestion as to what i can do to correct this problem?

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John,yes i have tried other engines on track 2 without any problems,& even with the engine #6-34732 if i change the switch on the power master from conventional to command it works normal on track 2. I just went down the basement and tried it again, & sure enough it did the same thing,also something else i just noticed, when i power up with the switch on the power master in conventional mode,it starts up without me even addressing the engine by it's ID # & if i let just idle,it will shut down without me even doing anything,& it will not even respond to the throttle or anything else. All my loops are independent of each other & i run tmcc & legacy.

 In your original thread, did you say you had 4 independant loops? Multiple parallel tracks could be creating a ground plane problem.

 

 

Try holding your hand just over the locomotive while you operate it, if it operates normally or noticably better it could be a "ground plane issue". Your body acts as an antenna when you hand is hovering over the loco. Ground plane issues do not effect every locomotive its possible to have just one in your fleet,usually the one with the weakest antenna. 

 

If this is the case search "ground planes" here on the forum, its an easy fix requiring a wire being laid next to the track.

I'm a bit confused Gerald, however if your operating the locomotive under command control via TMCC the switch should be on command, theres your problem. With the switch set to conventional I suspect the "track side" of the signal is not being delivered.

 

Additionally which command system are you using Legacy, TMCC or both. If both at the same time, the mix of components and seperate hookups to each loops are creating your different operating scenarios.If this is your only legacy locomotive that may have something to do with it as well. To explain it exactly you would have to layout your entire wiring setup,having said that, if your command locomotive works with the switch set to command its working as it should. If its not broke, don't fix it

Last edited by RickO

Rick i also run conventional engines on this loop, however on all 4 of my loops i have never moved the switch on the power masters since i got back into the hobby 4 years ago, they allways stay in conventional mode,but for some reason this engine only responds when the switch is in command mode on track 2 ,i can't explain it i can only say what is happening, it has to be something to do with the engine itself the question is WHAT ?   I suppose eventualy we will figure it out,if anyone has any other suggestions i will be glade to hear them.

Originally Posted by Gerald Marafioti:

but for some reason this engine only responds when the switch is in command mode on track 2...

once you connect the command system (Legacy) onto the track you can not ever run a command engine in conventional mode, unless you remove the command system (Legacy) from the track or turn it off.  Lionel set up the command system to always be looking for the TMCC/Legacy signal.

I 'M sorry if i'm not explaining it clearly,but i have both tmcc & legacy like i said before i have been running both conventional engines & command control engines for over 4 years with the setup i currently have, 4 independent loops each with there own transformer & each with there own power master without ANY PROBLEMS until i bought this engine 2 weeks ago. I know it's hard give advice unless you are actually there so i understand people how may not full understand what i am saying we will figure this out eventualy,but keep those suggestions comming,i will keep you posted if i make any progress.

so try this disconnect all but track 2 from the legacy base so it is the only one to get power or the legacy signal if all works with the switch as you say worked before then sounds like a ground plane issue in regards to this one locomotive.

 

2. or could the r2lc be bad in this particular legacy engine what say you other legacy guru's could it be that simple?

 

$oo

Ok,i'll try to explain the problem in a more simple way,just try and picture this, 4 independent loops,each with there own transformer,& each with there own power master all power masters have the switch set to conventional mode which is necessary to operate both command & conventional engines & which is how i have been operating my layout for the past 4 plus years, now take problem engine & put it on trake 2,power up track 2 engine starts up without even putting in the ID #,it responds to throttle,but not any other commands, such as tower talk ,now take same engine and put it on each of the other 3 loops, power up each loop,engine does not respond until i put in ID #, then it starts up,& responds to all commands,so the big question is why does it work perfect on 3 loops & not on track 2? ,remember all of my other command engines work perfect on track 2,& 1 more thing,if i move the switch on track 2 power master to command mode,problem engine works perfect. I can't wait to find out why this is happening ,it's very interesting.

okay so other power masters are set to conventional correct?

 

so track #2 is only problem child so remove power master on that loop take the power master from loop#3 and see if problem remains if not, then the engine is fine but the power master is the culprit.

 

did that help I also read the manual for the train master and I always thought you had to set switch to either command or for conventional so as I understand it you actually can run both conventional\command on same track using the power master switch set to conventional. learned something new.

 

$oo

Ron , remember if i move the switch on the track 2 power master from conventional to command ,it works perfect & responds to all commands, so it is getting the signal with the switch in command mode, put the switch back to conventional it does not respond to any commands,again if i put this engine on another loop where the switch is in conventional mode, it works perfect & responds to all commands.

ok I read what you said below and it sounds like the power master is the issue?
 
unless you set the switch to command it doesn't work correctly with this engine as you said above you would try Sunday were all waiting to hear the out come.
 
$oo
 
Originally Posted by Gerald Marafioti:

Ron , remember if i move the switch on the track 2 power master from conventional to command ,it works perfect & responds to all commands, so it is getting the signal with the switch in command mode, put the switch back to conventional it does not respond to any commands,again if i put this engine on another loop where the switch is in conventional mode, it works perfect & responds to all commands.

ok re read your original post you say the engine takes off on it's own with switch set to conventional  which means the power master is delivering full power to track and the engine is not reading that the track is actually unpowered until the power is sent from the transformer.

now you say if you move the switch to command on the power master all is well so.

 

with the switch set to command put a conventional engine onto the track if it takes off then oh well. but if it sits silent then try starting it up if that works see if the problem engine works if both are now working then the switch on the power master is backwards.

 

can't hurt to try at least one more possibility dealt with

 

$oo

John has a good idea. Move the Powermaster and see if the problem follows it. The difference between the engine working when the Powermaster is in Command mode is that when the Powermaster is addressed it comes up at 18 volts instantly. In conventional mode it comes up slowly as you turn the throttle. When the voltage is coming up slowly the electronics in the engine OR THE POWERMASTER can behave oddly if there values are just a little off of spec. 

Ron

Originally Posted by Gerald Marafioti:

$00  line if the power master was the problem,then why would all my other command engines work on this loop?   Confusing isn't,i know it's driving me nuts.

Debugging is simply the process of elimination.  If we remove the Powermaster as a possible culprit, we can look for other things.  Next, strange as it sounds, I'd use a different transformer for that loop as well.  Do that in a separate step.

do you by any chance have all 4 transformers phased together?
just curious.
 
now so far in post below I see no mention of what a conventional engine does on loop 2 have you tried that to see if it does same as the command engine does and fly's like a bat out of h-- for the barn?
 
do you actually run conventional engines at same time as command engines on same track? if not then I am curious as to why not set switch to command and be done with it
 
$oo
 
 
Originally Posted by Gerald Marafioti:

I have a legacy engine #6-34732 whenever i put the engine on track 2 & power up that track , it starts up without me even addressing it by it's ID # & it doesn't respond to any commands,if i take the engine & put it on another loop & power up that loop it doesn't respond until i address it by it's ID# & it responds to all commands, also if i change the switch on the power master from conventional to command on track 2 the engine works perfect. This engine works perfect on all loops except loop 2, none of my other command control  engines have any problems on track 2. Anyone have any suggestion as to what i can do to correct this problem?

Last edited by $oo Line
Yes we are Kind of. Except my thought is this. If a part in the engine is a little lower value and a part in the Powermaster is a little higher in value but both are within the part's proper value range you could create a perfect storm so to speak and the engine doesn't work correctly. Back in the early computer days you would see this show up in high density floppy drives. One floppy drive was reading and writing a little left of the track center and another floppy was reading and writing a little right of center the resulting floppy could not be moved from one drive to the other even though they both were within the tolerance range. 
Ron

$OO line; All conventional engines work just fine on track 2 & all other loops, so i did as what was suggested, i switched power masters,i then powered up track 2 & engine did not start up until i addressed it by it's ID#,so i'm thinking problem solved, but to make sure i did it again,looks good so try one more time,shut down track 2,then problem returns,so it's not a power master problem.$OO  LINE asked if it was a first issue cw-80 transformer,so i looked under the transformer & it does not have the letter G,it so happens i have a spare cw-80 with the letter G on the bottom,so ihooked it up to track 2 then i powered up the track engine does not start up unless i addresse it by it's ID #,looks good so far so did it about 10 times right now it looks like it was a transformer problem, my thanks to $OO LINE for suggesting that it might be a transformer problem ,and to all others who responded you all were a a great help to me.

its called gremlins they love to annoy you... lol ! I can't explain why this one engine liked it not and the others did but at least it's working maybe somebody more electronic minded can provide an answer.
 
thanks for the photos of your layout and train room looks like a really nice layout enjoy.
 
$oo
 
Originally Posted by Gerald Marafioti:

I forget to mention that the original problem seems to have been solved ,it still doesn't explaine why when i moved switch from conventional to command mode engine worked fine and remember all other command engines worked ok with problem transformer.

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