 Joined: 27/12/2009(UTC) Posts: 1,165 Location: Western Cape Cape Town
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What is the "ideal" track voltage reading to have?...On my "test" track I have 18.1/18.0 (read-out from MS2), and on my layout when trains are running it varies 17.7/17.8V. Is this within "permissible" specs? (with MS2 off it reads 18.0) I only have the 2 wires from the connector box to the track - C track, layout size about 2.9m x 1.2m. The "Mains" reading on the MS2 depends on the amount of trains I run, and/or lighting, sounds, and smoke - the "highest" reading I've had is 1.1A, with 6 locos running simultaneously....Is this reading within "limits"?? Excuse the ignorance......electricity has NEVER been my string point  thanks, Joe
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Joined: 16/02/2004(UTC)
Posts: 15,443
Location: DE-NW
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The MS2 is used with a 2 A power supply. The MS2 can deliver up to 1.9 A to the track (Mains) and will switch off if on overload.
It measures the "track voltage" inside the box. If there are not enough feeder tracks, locos may get a lower voltage.
Don't expect a high accuracy from these readings. You cannot adjust the track voltage - unless you replace the power supply.
18 V should be enough for most trains. Locos with Delta decoder or 6080 decoder might run a bit slow.
With a CU 6021, normal track voltage was around 22 V. But any track voltage between 18 and 22 V should do. |
Regards Tom --- "In all of the gauges, we particularly emphasize a high level of quality, the best possible fidelity to the prototype, and absolute precision. You will see that in all of our products." (from Märklin New Items Brochure 2015, page 1) ROFLBTCUTS  |
 1 user liked this useful post by H0
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Joined: 27/12/2009(UTC) Posts: 1,165 Location: Western Cape Cape Town
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Originally Posted by: H0  The MS2 is used with a 2 A power supply. The MS2 can deliver up to 1.9 A to the track (Mains) and will switch off if on overload.
It measures the "track voltage" inside the box. If there are not enough feeder tracks, locos may get a lower voltage.
Don't expect a high accuracy from these readings. You cannot adjust the track voltage - unless you replace the power supply.
18 V should be enough for most trains. Locos with Delta decoder or 6080 decoder might run a bit slow.
With a CU 6021, normal track voltage was around 22 V. But any track voltage between 18 and 22 V should do. Thanks Tom - stoopid question coming up .....extra feeder tracks...How are they connected? I have read one should connect extra feeder tacks every 2 or 3m? I gather with C rack this is nice 'n easy, simply connect brown and red wires to O and B with the little spade connectors, but then where to??...do I join all the reds and browns together....and then join them to the "original" brown and red wires coming from connector box?  As always, thanks for the help!! Joe
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 Joined: 17/09/2006(UTC) Posts: 18,771 Location: New Zealand
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Originally Posted by: Joe Meiring ......but then where to??...do I join all the reds and browns together....and then join them to the "original" brown and red wires coming from connector box? Yep, that's exactly what you do! For this purpose you can use the Marklin 72090 connector strips, or something else, like solder tag strips (available from your local electronics store). You need to separate red from brown, so you will need at least 2 72090's.
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1 user liked this useful post by Bigdaddynz
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Joined: 27/12/2009(UTC) Posts: 1,165 Location: Western Cape Cape Town
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Thanks David!...Don't feel so stoopid after all...lol
Joe
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Joined: 17/09/2006(UTC) Posts: 18,771 Location: New Zealand
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I did a presentation to our Marklin club members on Friday night on this very topic (Layout Wiring), so it is quite fresh in my mind.
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 Joined: 12/01/2002(UTC) Posts: 2,578 Location: Sweden
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An observation I have made is that too high track voltage will make some "Hobby" locos run less smooth at low speed. The test was made by supplying an MS1 from the "red" output of a 6647 transformer. At the maximum voltage the Hobby locos did not behave correctly. There was no error in the signal waveform, so it is probably the voltage that causes the problem. With the 18 V DC power supply it worked well. Also any configurations with the 6021 CU or the 6017 booster and either the 6647 or the 6002 transformer worked well. Only some Hobby locos were affected by the problem, all 6090x and mfx locos worked fine in a wide range of voltages, although non-SDS mfx C-sine locos that were not upgraded did show a much more than proportional speed variation with varied voltage. After upgrade at Märklin (free of charge) this excessive speed variation was cured.
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