Yes. xx means 15 or 18 Volts.

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AFAIK that are the only suitable versions in the series.

On Thu, Dec 5, 2024 at 06:38 AM, karst.drenth wrote:

GSM60Axx-P1J series is a good choice.

Correction, it is the GSM60Bxx-P1J series

Hi Jay,

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Can the DR60710 power supply cause damage to controllers it provides power to ?

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Oh YES it can !

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Look....

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But first:

It CAN be Short on the DC side, must most likely it's the Voltage-Selector slider that malfunctions or any of the internal capacitors get bust. Mostly the PSU then outputs 33VDC :O Then the equipment's safety crow-vbar kicks in. That however can "only" take 5 Amps. Then comes the second flwa into play: The PSU keeps on pushing current until it starts burning a) itsself, b) the equipments crowbar...?

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1. Has anyone seen this problem ?? If yes, what was the source of the short on the DC side ?
   
   Oh yes, more than I like. Even in the time I still did design work for them, I saw an Eployee destroying 5pcs YD5052 (brand new!! ) with a faulty PSU which ouput 26V ...
   
   
2. How do we tell if we have an old power supply -? all 10 of them are DR60710s ??
   
   All of the ADJ types, the ones with the voltage selector
   
   
3. Has anyone implemented a 3.5A fuse in the DC line to prevent problems ?
   
   IMHO that is only curing the symptom.
   
   
4. Does the DR60710-M, which I assume is a newer power supply, address the problem of a short on the DC output side ?
   
   Same el-cheapo PSU with voltage selector, just that the China-Man put an Digikeijs Label on it.
   
   
5. What other power supplies are people using the the DR5000, YD7001, etc ?
   
   Many use this dangerous PSU. We advise our YD7460 PSUs, but also Meanwell GSM60Axx-P1J series is a good choice.

I appreciate this is an older post, but assume the right product is the GSM60B18-P1J version, as double insulated (the box in box symbol). The "A" version is not.

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Hi

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There is a post on the FaceBook group ?that suggests that if there is a short on the DC output side, the DR60710 power supply cannot handle this because it does not have a built in circuit breaker. As a result of the short the DR60710 is damaged internally and starts sending high voltage to the controllers it is providing power to (controllers = DR5000 / YD7001 command station, DR5033 boosters, etc).? We may be interpreting the post incorrectly, so a translated version of it follows:

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“Just another warning in relation to the old Digikeijs ADJ Power Supplies...

Translation of?'s message using Deepl:

On the photo you can see what can happen if these Digikeijs ADJ power supplies continue to be used without an additional 3.5A fuse in the DC line using the example of a YD7001. As we should know, this power supply outputs up to 33V if the voltage selector switch has a loose contact. This happens more often the older these things get. At this moment, the protective diodes that are supposed to prevent worse things from happening are destroyed. But now comes the second major fault of these power supply units, because they continue to fire 7 to 9 A at the poor YD7001. As we also know, the power supply units have no short-circuit protection. The end result is a charred board, melted housing halves, a soldered DC connection and detached conductor tracks. A fuse may not prevent the initial destruction of the diodes, but it will at least prevent this immense damage caused by charring! So consider carefully whether it is not time to replace the power supply units with safer versions!”

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There is also a video: https://www.youtube.com/watch?v=xYV-M2JXvk0

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Based on this we have questions that hopefully someone in this group can comment on:

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1. Has anyone seen this problem ?? If yes, what was the source of the short on the DC side ?
2. How do we tell if we have an old power supply -? all 10 of them are DR60710s ??
3. Has anyone implemented a 3.5A fuse in the DC line to prevent problems ?
4. Does the DR60710-M, which I assume is a newer power supply, address the problem of a short on the DC output side ?
5. What other power supplies are people using the the DR5000, YD7001, etc ?

Any information you can provide will be appreciated.

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Jay Lennox

Toronto, Canada

Correct

There is no manual, instructions are on the bottom-side of the PCB ;)



Just 1:1 connection to the decoder.?

Does anyone have a diagram showing how to wire up and use the YD6942? It might be a solution to a problem and I would like to know how it used :)

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Or has anyone seen manual?

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Thanks

no problem

I bought my kits from

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These seam reasonably priced to me.? I am not an electronics engineer but I can solder and follow instructions - you pay for the parts and the knowledge the enclosed bits do what you need.

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My droppers are fed from power bus terminal blocks as seen on Chadwell Youtube.? The 'negatives' run through a DR4088s.? The suppressors are connected across one of the terminal blocks.

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Initially I only installed them on the power buses and that didn't help the problem.? I then realised this was a bit silly and installed one across the DCC accessory bus as this feeds the? ?Digital IPs.

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All seems good, not had to reprogramme all those blasted point motors since.? No false positives on the? DR4088s, now happily running my YD9401.

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Adam

Thanks Karst

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I do have your email from a previous correspondence. Would you mind if I replied to them adding you to the cc?

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Cheers Eddie

He had wired a completely separate accessory. ? We added a Tam valley booster??to power the accessory bus with his cured the problem, the booster does not pass railcom. ?Not the cheapest way, ?but I had the booster spare. ? It also takes load of off the track boosters. ??

I also run my accessory bus via one of these boosters, ?left over from my days using NCE power cab.

Jeff

On Tue, Nov 26, 2024 at 01:15 AM, Iain Morrison wrote:

This sounds like a blame game by Lodi to cover up their inadequacy within the controller.

That is my impression :) I would any employee of mine, that would say this to me, fire instantaenously? :O :O
And.. I think it's a very "cocky" reaction.?

But for the "problem": If LoDi(-con) does not understand what a commandstation is sending, doesn't seem to me a CS problem...? As far as I know ALL (!!) other Z21 App and Applications DO understand this garbage.
Anyhow, I would be very willing to take a look. Provided a) LoDo sends me a free LoDi-Con, b) tells me what their problem is.

Further: Whjat they advertise is:

• LoDi-Rektor
• LoDi-Shift-Commander
• LoDi-S88-Commander
• z21 und alle Zentralen die das Z21-Protokoll unterstützen
• M?rklin CS2/3
• XpressNet
• ESU ECoS?
• WiThrottle
• Loconet (in Vorbereitung)

Greets,
Karst

They would if you placed them in a bit of track that was going back through a detector - put them in the feed side of the power and they should be ok.

You can put them anywhere, doesn’t have to be across the track rails - TBH you could put them over the command station or booster outputs and they would have the same effect.

I've tried them bus suppressors and they gave me false occupancies

I find this response for Lodi rather surprising given that the Z21 protocol is an openly published document and has been used by many other companies to develop items and not of them seem to have an issue with bidirectional traffic between a Z21 and their product.

As an example I use iTrain which interfaces to the Z21 without issue and that is very bidirectional.

This sounds like a blame game by Lodi to cover up their inadequacy within the controller.