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In planning for another layout someday, I'm curious as to how to power it using the Z1000 bricks and our DCS system. Am assuming that I would power each channel of the TIU with one brick giving us 400w for all 4.

How would I add more power if needed to the existing setup?  We used a single Z4000 on our old layout which seemed to be plenty of power for 3 loops but in looking back, I didn't have it wired correctly at the time. Other than being able to see the voltage and amps, I rarely used the throttles.

Last edited by c.sam
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 Well, another tiu could be added giving more power districts and bricks= more power.

Larger bricks with higher output could be used.

Lionel tcp or whatever they're called could be used to tie 2 bricks together.

 Wire the layout using the TIU in passive mode, so that the amps aren't drawn thru the TIU. That way you could have larger supplies if needed.

 My layout uses shorter sections that are on different bricks so that when I run large consists, the engines cross onto different districts and don't trip the power. More bricks, more districts, less is being drawn on each.

Sam you could just use bricks, and put in panel meters somewhere so you can monitor volts and amps. Or if the Z4000 is enough, just use that.

 

The only thing I don't like about using the Z4000 with DCS, is every time you turn the power off to the layout, you have to make sure both handles are down before powering back up. With our ZW-C we can leave all four handles up (on) and turn power on and off without having to move the handles on the ZW.

Originally Posted by Enginear-Joe:

 

 Wire the layout using the TIU in passive mode, so that the amps aren't drawn thru the TIU. That way you could have larger supplies if needed.

 My layout uses shorter sections that are on different bricks so that when I run large consists, the engines cross onto different districts and don't trip the power. More bricks, more districts, less is being drawn on each.

 

This certainly sounds feasible Joe, thanks.  I hadn't thought of using the TIU passively as that is something I've only recently become aware of.  If I understand you right, I just separate the layout into blocks per the star-wiring setup and run a Z1000 (or Lionel 135/180) directly to the block?

Originally Posted by Barry Broskowitz:

Joe,

 I think the Z4000 puts out more per channel than a Z1000 brick?

A Z1000 allows for approx. 4.5 amps at 22 volts. Each Z4000 handle allows for 10 amps at 22 volts.

 

I guess I was mistaken as I thought I read somewhere that the Z1000 put out 6amps. My two only show 18v on the track. The Z4K would show 22v..

Last edited by c.sam

 That would be the nice thing about using all of the exact same bricks. You wouldn't have any power differential between blocks to worry about.

 I have my O scale still on two 180w Lionel bricks for now. I only have one mainline loop connected. I also have a Z1000 brick that I've tried. I swear when I pushed it, it did almost as well as the 180W Lionel. I would have guessed close to 6 amps? I didn't have a meter. Just three G scale engines with the smoke on for a test. The Lionel did better overall.

 

  I have purchased some Bridgewerks packs for my G scale with DC power after being told it would carry the signal better. I have not seen the difference, although I like the fact the packs have plenty of juice with up to 25 amps and onboard meters. I just have smaller inline fuses for protection. I like them up around 27volts for the voltage loss to get about 24v to the track. I also have a pack that "Tank" gave me! It works as well as any and will handle anything I've ever thrown at it.

 There's no substitute for good power.

 

Last edited by Engineer-Joe

Hi Guys,

 

The Z-1000 bricks put out 21-22 volts with no load, but typically operate at 18-19 volts with a 3-4 amp load.  They have a 6 amp circuit breaker.

 

The NWTL is powered by 28 Z-1000 bricks.  Each of the seven TIU's has one brick connected to each channel.  Even with the NWTL's heavy grades (2.5%) and long trains it is extremely rare that we trip a breaker.  With all the passenger cars converted to LED lighting there is no appreciable difference in current draw between passenger and freight trains.  I previously planned to parallel two bricks per channel and add 10 amp breakers, but it just hasn't proven necessary.

Originally Posted by c.sam:

Thanks Dave. ...28, that's amazing.

 

At what point do you need to add a second TIU?

It appears that Dave is taking each TIU and programming the (2) Variable Channels to Fixed, then using (4) transformers, (Bricks), for the (4) Fixed inputs to the TIU. 

(7) X 4 = 28.  I like the idea, that a specific track circuit is less than 6 amps as Barry noted. 

Even the higher amperage parallel PH 135's or parallel PH 180 power systems, IMO, require fusing down track circuit power to 7.5 amps or less, which appears to be done here with the auto trip mechanics of the supplied transformers. 

 

I believe the MTH TIU system will recognized (7) Correction noted: DCS recognizes up to 5 TIUs, not 7. different TIU's, I'm not sure about more than that.  I never got beyond (2) TIU in the system.

 

Last edited by Mike CT

Just curious Barry, as this is purely academic for me at this point, but 'how much trackage is manageable per TIU' I guess would be a better way of asking my question...

 

Am thinking about layouts like the Northwest Trunk Lines and the NJ High-Railers. How do they work in more than the 5 TIUs?

I mix 4 Lionel 180 bricks, 3 Z 4000's and 1 MRC Pure power Dual (plus two post war ZWs for accessories). You can mix and match bricks and regular transformers. I have one loop with two 180 bricks, for when I ran my Acela and three other trains.  I might move them to my 5th loop (not running the Acela) because my 4  trains (1 with three MTH Heritage UP diesels, 1 with 3 MTH Western Md diesels and one with an MU of two Lionel NS Heritage diesels and one MTH EVO diesels) pushing my amps between 7.5 and 9 amps depending upon speed, whistles and smoke on that loop.

Originally Posted by winrose46:

I mix 4 Lionel 180 bricks, 3 Z 4000's and 1 MRC Pure power Dual (plus two post war ZWs for accessories). You can mix and match bricks and regular transformers. I have one loop with two 180 bricks, for when I ran my Acela and three other trains.  I might move them to my 5th loop (not running the Acela) because my 4  trains (1 with three MTH Heritage UP diesels, 1 with 3 MTH Western Md diesels and one with an MU of two Lionel NS Heritage diesels and one MTH EVO diesels) pushing my amps between 7.5 and 9 amps depending upon speed, whistles and smoke on that loop.

Well? I wonder if in that one instance of time where a loco crosses from one supply to another in a district, if it could be damaged if the power was set at a big differential? Probably never notice it? I have noticed my locos surge if the power being drawn is high and a loco enters a block with power to spare. I've always wondered if that's causing any unseen issues?

Originally Posted by c.sam:

Am thinking about layouts like the Northwest Trunk Lines and the NJ High-Railers. How do they work in more than the 5 TIUs?

I will probably never use even 1 TIU to it's full capacity, but sure would be interested in hearing how these huge layouts are done as well. Especially when one system gets 5 TIU's and still needs 2 more! Or even more yet?

Back to the original issue:

Lionel 180 Watt bricks will give you the Max 10 amps per TIU channel for a bit more money.

720 watts on a layout is a LOT of power.

1440 with 2 TIU's, ect, it gets to be massive power fast.

 

Just remember to fuse each Positive line withe no more than a 10 amp fast blow fuse to protect the electronics.

Originally Posted by c.sam:

In planning for another layout someday, I'm curious as to how to power it using the Z1000 bricks and our DCS system. Am assuming that I would power each channel of the TIU with one brick giving us 400w for all 4.

How would I add more power if needed to the existing setup?  We used a single Z4000 on our old layout which seemed to be plenty of power for 3 loops but in looking back, I didn't have it wired correctly at the time. Other than being able to see the voltage and amps, I rarely used the throttles.


. Well, the Z4K and ZW-L for that matter are pretty superfluous if you plan to run all command control. You need to pop the handles into position quickly for the watchdog signal and then make sure they stay at 18v (passenger train start up has a way of dropping it down). I begrudgingly bought the Z4K when we entered the hobby 2 years ago, even though I know it's of limited use - mainly because my twins like to race their conventional Polar Express and other conventional stuff.
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