Tagged With "TIU"

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Additional O Scale Transformers (Help!)

PhoebeSnow ·
Hello all, I currently have an MTH DCS layout powered by a Z4000, through both handles. On the left, I have a main table with three main loops of track along with some sidings. On the right, I have two simple loops around the ceiling of the room. On...
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Atlas turntable power

Porsche1662 ·
Hi Guys, working on my turntable this weekend. I have 14 lines coming off. Im trying to figure the best way to power each line.  Do I need to run a separate line to the port terminal block for every one or can I wire two terminal strip close to the turntable then one line to PTB ?  If I can should I use a heavier ga wire from each TS to the PTB ?  Or do you recommend a separate transformer for this? layout is 9x22 with 3 loops and the turntable...
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Circuit protection design when using Passive DCS mode

pro hobby ·
Circuit protection design when using Passive DCS mode: Note: More information about the Passive DCS Mode can be found in the DCS O Gauge Companion by Barry Broskowitz (published by MTH). Here is a system design that I am using for my DCS control system using Passive DCS mode .  Passive mode allows for direct connection of AC power to the track entirely bypassing the TIU. Since I have individual relays and individual circuit breakers for control of power to each block the use of...
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DCS TIU

Grandpad ·
I am about to wire large new layout. I have 3 TiUs a rev H1, I, and L.and plan 12 separate power districts although all the trackage will be interconnected. Will using all three of them cause any problems and are there things that I need to look out for? Thanks for any advice
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DCS TIU & AIU on large layout

MI-Marc ·
I have several questions regarding DCS TIU & AIU placement and wiring for a large layout now in the planning stage: I am planning a new DCS controlled layout in the basement of my new home (under construction now). The main train room is 18' x 92' (it extends under the garage), and ultimately could extend laterally under the rest of the house another 40' x 44' away. I plan to havetwo or threeZ-4000s with 2-3 TIUs to control the layout. With a DCS...
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DCS remote won't read either TIU after reset

JerryG ·
Well, I've done it now.  Got a new TIU and tried to create a super TIU, because I have 2 layouts (overhead and table) and also want DCS for the larger conventional one.  Followed manual step by step, which said to reset the remote and the TIU's, move the old TIU address to 2 first. Now the remote won't communicate with either TIU.  I'm going through the menu's to add engines and can't do it on either layout.  1.) I tried to change the TIU address on both separately...
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Help can't grasp MTH TIU logic 3 tracks running PS1, PS2, TMCC, Convetional

trainguypa ·
Help we are running 3 tracks and have 7 storage spurs. The tracks are inter-connected using switches each track (line) is isolated with an isolation track thus they are running totally independently. We run Convetional engines (old Lionel, Marx, etc.) TMCC/Command engines, and Proto1 and Proto2 engines. (Sure why would it be easy) heck, we even have a live steam! I am attaching a picture to this, I have NO idea how to wire this up. The core thing I do not understand is the variable...
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DCS 5.0 TIU Rev L USB Port Problems on iMac

howardih ·
I have an iMac running Windows 10 using Parallels 11. When I input the A-B USB cable in to the TIU, I get a "USB Devices Disabled, Unplug device using too much power" message. I then cannot even get Windows 10 to "see" the TIU. Has anyone experienced this? Should I only have to plug the TIU to iMAC using the USB cable and connect the Proto-Dispatch and Proto-Cast ports? I wanted to get this TIU working to then install the Wifi module.
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Emergency E-Stop Circuit and Protection for track power (TIU Passive mode).

pro hobby ·
Emergency E-Stop Circuit and Protection for track power (TIU Passive mode). I have constructed a Dual Channel circuit protection panel with built in remote "E-Stop" circuits.  This panel provides for two channels with a 10 ampere circuit breaker per channel.  Along with the circuit breaker protection I also have a "remote" E-Stop circuit which allows a "shut down" of all power to 2 input channels of my MTH TIU. I can have 4 (or more) E-Stop "pushbuttons" located around the...
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Re: TIU COM ports now connected after cycling power to TIU

Marty Fitzhenry ·
Click on the options tab on the top of your loader and do the auto search for TIU and it should go.
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Re: MTH REAL TRAX ELECTRICAL GREMLIN

Stan Cedarleaf ·
An update on the electrical “Gremlin” situation that led to this thread on the forum. Because, we only run on this layout on the first on the first Saturday of the month, we have had time to fix the problem after our run day on Feb 5 th …. The run time on Feb 5 th went quite well and we were able to run conventional, DCS with the handheld and using the WIU with smart phones. As you can imagine, the smart phones were smarter than some of the older users, but the 4 year old visitors who used...
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Re: MTH REAL TRAX ELECTRICAL GREMLIN

Dansgnrr ·
Nice going Stan and your crew, this site is sure helpful.
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Re: MTH REAL TRAX ELECTRICAL GREMLIN

Stan Cedarleaf ·
It most certainly is, Dan...
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Re: WiFi and older TIU

RJR ·
You're welcome. As to why the light started blinking, I can only say that there must be some circuitry in the cable that communicates. When I plug the cable into my computers, even though nothing is connected to the serial end, the computer gives the "USB recognized" double chirp.
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Re: WiFi and older TIU

RJR ·
Are you sure the USB>serial cable works? Can you use it to connect a PC with the TIU? I have used the wifi with an ancient Rev G TIU and it worked flawlessly.
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Re: WiFi and older TIU

cj720pgh ·
The cable is brand new. I have a lap top that I connected to the TIU with it but there is no indication that the lap top is seeing it. I'm curious as to why the purple light in the WiFi unit starts blinking as soon as the USB connector is inserted.
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Re: WiFi and older TIU

cj720pgh ·
The cable was the problem. Replaced it with another and now everything work. Even have both of my WiFi units networked together. Thanks for the help RJR
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Re: TIU Not recognized

GGG ·
I am assuming your talking about one of the voltage regulators with a screw through the heat sink. If that is hot, there is a short on the microchips overloading that regulator. Needs to be repaired. Or it is one of the FETs in the bank of heat sink, but that would only be when a variable channel is powered. G
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Re: TIU Not recognized

Kris3914 ·
I called MTH and I was only on hold for about 8 minutes I actually was impressed with that. I explained my issue and was given an authorization number. 25 bucks to ship via UPS but what the heck it was time to take a break from the layout anyhow. I just hope it would not have been money better spent on a new TIU and an in line fuse.
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Re: TIU Not recognized

Kris3914 ·
Thanks G you are correct on your assumption. This one is out of my league so I shipped it.
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Re: TIU Not recognized

JerryG ·
Kris, Sorry to hear. Suspected as much. You are lucky to get that timely a response. I have gone days...the MTH folks are very helpful, but they must be understaffed. MTH stuff is great- when it works. I keep buying, but have had to send a few things back. Most of the "train people" are more than willing to take care of things. I figure with such a sea change in technology there are bound to be problems, but the new stuff is so superior it is worth the problems we go through. I thank Barry...
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Re: TIU Not recognized

JerryG ·
Kris, Many have had a similar problem. Try this first. Check and make sure the nut is completely tight to the screw. TIU's seem to have that issue. The fixture will get really hot, but not enough current to trip the fuses/breakers. I have a deformed fixed 1, but after tightening that nut, the problem went away and the trains run again. Fortunately, it only affects the fixture, not the board. If this doesn't work, then the guys will likely take you through the whole checklist. JerryG
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Re: TIU Not recognized

Kris3914 ·
Thanks Jerry. It felt tight by hand but I will give it a turn.
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Re: TIU Not recognized

Kris3914 ·
Well I gave it a turn and it tightened but the results were the same both engines started like they were in conventional
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Re: TIU Not recognized

Pine Creek Railroad ·
Kris3914, I recommend powering your DCS TIU thru the Aux with a RS 18/24 power supply, further use good male Banana Plugs on both the in & out sides of your TIU to help eliminate any loose wire problems that might arise over longevity operation. I have been operating in this particular manner for many many years, works perfectly all the time, and gives you another channel to operate trains from also. PCRR/Dave
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Re: TIU Not recognized

Barry Broskowitz ·
First, make sure that the circuit breaker on the Z1000 that powers Fixed #1 Input hasn't tripped. If the TIU's red LED does not light when power is applied to Fixed Input #1 and all fuses are good, the only possibility, other than a TIU repair, is that the microswitch on the Aux. Power port is defective. Test the Aux. Power port by plugging in a Z1000. If the red LED still doesn't light, call MTH for an RA# (repair authorization). The fact that you have a very hot board component, that's not...
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Re: TIU Not recognized

Gregg ·
Not good....I would disconnect all the tiu outputs and try powering up the tiu using fixed 1 in... Will it light up? how about with just the aux power supply?
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Re: TIU Not recognized

Kris3914 ·
Okay back to the basement.
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Re: TIU Not recognized

Kris3914 ·
Still Nothing I am calling MTH my local National dealer opens at 2:30
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Re: TIU Not recognized

Kris3914 ·
Tried that still no red light. Time to box it up and take it in.
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Re: TIU Not recognized

Kris3914 ·
Thanks for all of your suggestions time to cal MTH
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Re: TIU Not recognized

Pine Creek Railroad ·
Kris, Sure looks like you have a major problem with your TIU, time to send her back for repair or replacement. PCRR/Dave
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Re: DCS 5.0 TIU Rev L USB Port Problems on iMac

2wheelsburning ·
Barry, After much trepidation, I was able to successfully upgrade my TIU Rev I3 and remote both to DCS 5.0 using my MacBook Air running an ancient version of WinXP in VirtualBox and a USB-serial adapter cable. I just bought the 3rd edition of your book, and it is enormously informative and helpful. I thought the DCS upgrade would be the hard part. Separately, however, I can't get my brand-new WIU online. I'm not sure it's even booting up correctly. When I plug in the power adapter, the wifi...
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Re: DCS 5.0 TIU Rev L USB Port Problems on iMac

Barry Broskowitz ·
Bob, Some observations: The LAN LED should not be lit if there's an Ethernet cable plugged in. However, you should also have a TIU connected to the WIU as well, before powering it up If the MTH/Home switch is in Home position, you will not see MTH_DCS-XXXX in your list of available networks. For Home mode, you need to log into your own home network, after connecting the WIU to your network via the WPS buttons on the WIU and your router If you place the WIU in MTH mode, then you will see a...
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Re: DCS 5.0 TIU Rev L USB Port Problems on iMac

Barry Broskowitz ·
Bob, Please confirm that the WIU is in MTH mode. The serial to USB cable should have nothing to do with the MTH network being available..
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Re: DCS 5.0 TIU Rev L USB Port Problems on iMac

2wheelsburning ·
Barry, thanks for the quick and detailed response. I tried this, and I still have the same 3 LEDs lit (Wi-Fi, PWR, LAN) together without any blinking or change of status from the moment I apply power. The lights flicker very slightly in unison, but do not blink (on/off) at any point. I have connected the WIU to the TIU using the same USB-serial adapter cable that I used to upgrade my TIU. For the purposes of isolating the USB-serial cable or TIU... if I power-on the WIU without the...
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Re: DCS 5.0 TIU Rev L USB Port Problems on iMac

Norton ·
Howard, you are not the only who has been unable to connect to Rev. L using Parallels. I ended up reactivating an antique Win XP box and keep it under the layout for upgrades. Matt FWIW the early Macbooks did not come with Bootcamp installed. It was on the install disk but you had to deliberately install it before you formated the disk. Once you install Parallels then your Windows OS you are stuck unless you want to reformat and start over. I won't make that same mistake with my next Mac...
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Re: DCS 5.0 TIU Rev L USB Port Problems on iMac

howardih ·
Thank you for at least convincing me that I wasn't crazy. The good thing is that once I got things up and running, the Wifi APP on my iPad is working really well.
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Re: DCS 5.0 TIU Rev L USB Port Problems on iMac

Barry Broskowitz ·
Bob, if I power-on the WIU without the USB-serial cable adapter connected, and the MTH/Home switch in the MTH position, should I get the MTH_DCS-XXXX network? No, you should not, as I stated above. What state would the LEDs be in with only a power connection? All you should have lit is power and WiFi. However, it's a moot question since without a TIU connected the app will not respond except to state that it cannot locate any TIUs. Further, unless you connect a TIU to the WIU, there's no...
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Re: DCS 5.0 TIU Rev L USB Port Problems on iMac

2wheelsburning ·
Barry, Thanks. I have connected the TIU to the WIU using a USB-to-serial adapter cable, using steps outlined in DCS Users Guide and your post above -- same 3 LEDs lit, and no MTH_DCS-XXXX network visible. The TIU light (on the WIU) never illuminates. I'm weighing whether to locate a different USB-to-serial cable, or to replace the WIU. Thanks again. Bob
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Re: DCS 5.0 TIU Rev L USB Port Problems on iMac

2wheelsburning ·
Confirmed. I tried it one more time, same results. I recorded a short video (embedded below) as a demonstration of the steps and lack of effect. Agreed, thanks again for the advice. If you see anything in the video I'm missing, please let me know. Bob
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Re: DCS 5.0 TIU Rev L USB Port Problems on iMac

Barry Broskowitz ·
Bob, Your video, unfortunately, leads me to the conclusion that the WIU is most certainly not behaving as it should. The lights coming on steady all at once indicates that the WIU is not going through its normal initialization cycle. Although it's a long shot, the only thing that I can suggest is that, with the unit powered on, press and hold the reset button in for 15 seconds and then release it. Then, remove and reinsert the power plug in the WIU's power port. If the WIU's behavior does...
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Re: DCS 5.0 TIU Rev L USB Port Problems on iMac

2wheelsburning ·
Thanks once again, Barry. Not great news of course, but I am relieved to have your expert 2d opinion as confirmation. Tried it, no dice. No change whatsoever to LEDs either during or after reset. The unit still will not initialize. Fortunately, I bought it from a well-regarded vendor (also forum sponsor), so I am optimistic they will replace the unit. I'll post final results here. Thanks again both for sharing your knowledge through your terrific DCS book and this forum! Bob
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Re: MTH REAL TRAX ELECTRICAL GREMLIN

Gregg ·
Welcome aboard Stan. It seem you guys are trying to make blocks by insulating the outside rails, It would be much easier to leave all the outside rails connected together and use the toggles to turn the different blocks on or off Via the center rail hot. . Yes you would need 4 center rail insulated joints, (2 on each switch) and 2 outside rail insulated joints for the non-derailing feature on each switch. Don't forget your freight cars are like jumper wires jumpering the outside insulated...
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Re: MTH REAL TRAX ELECTRICAL GREMLIN

Stan Cedarleaf ·
Hi Gregg.... Thanks so very much for the quick response. Yes, to isolate the center rail could be an option. We looked at the manual for the O31 turnouts and MTH recommends isolating the rails the way we did. The problem is with the joint at the turnout at the green arrow. The inner "siding" isolates just like the way the diagram on page 14 of the manual shows... Everything else is isolated. We did flip flop the SPST toggles and had the same results. And yes, again, we are aware that the...
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Re: MTH REAL TRAX ELECTRICAL GREMLIN

Gregg ·
Yes you can still keep the non-derailing feature if you use toggles to turn off center rail power... I don't understand what MTH is describing, but I doubt it's about creating blocks by insulating the outside rails... I think you're making it much harder than it should be. Switch the hot. One SPDT toggle to select TIU or Z-1000 conventional... I'd probably use a center off type as well. 3 on\off type toggles for the 3 blocks.
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Re: MTH REAL TRAX ELECTRICAL GREMLIN

Galon ·
Stan, If you have continuity at the green arrows the ends of the rails are most likely touching. Try taking the track apart and putting a small piece if electrical tape on both the outside rail ends you want to isolate and re assemble. Galon Tonell
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Re: MTH REAL TRAX ELECTRICAL GREMLIN

Moonman ·
Stan, How are you connecting the power feeds from the TIU to the track? RealTrax Lock-on? RealTrax is designed so that the Lock-on determines which outside rail is the Common(neutral return of AC) by it's orientation. The plan on page 14 has the lock-ons oriented to the outermost rail being the common for sidings and isolated part of the loop and the main part of the loop has the innermost outside rail connected. The outermost outside rails are isolated just past the thru and turnout of the...
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Re: MTH REAL TRAX ELECTRICAL GREMLIN

RJR ·
I have never heard of breaking outside rails to create blocks, and I'm sure you're misreading MTH. It isn't practical because trains will be jumping the gap for long periods of time.
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Re: MTH REAL TRAX ELECTRICAL GREMLIN

Gregg ·
The pic from Moonman (MTH) shows the non - derailing feature for one route only . The insulated pins are definitely shown in the wrong location for non-derailing on r the other route. At one time I owned a Real Tra x switch and believe it also has center rail power routing... Could be mistaken on that one..
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