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Marklin 37171 BR52 Condenser tender problem / Ecos 2
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Offline Dave Banks  
#1 Posted : 26 June 2011 10:51:24(UTC)
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Dave Banks

Australia   
Joined: 08/03/2006(UTC)
Posts: 1,041
Location: Gold Coast, Australia.
I Wonder if someone can shed some light on a problem I have with with a BR52 condenser tender. I recently converted this loco to have sound with all the bells & whistles. I have used a Loksound M4 decoder. To operate the three fans on the tender I have hooked up a FRT2-S DC12v relay to switch the fans on via Aux 2. This works really good when using a central station or mobile station. Fans turn at a moderate speed taking is power directly from the track. Now comes the issue, when this same loco is placed on the track with a an Ecos 2 all other functions operate just dandy except for the fan. It stutters & tries to turn but will not spin. Is it because the relay is 12V or is there too much track power or too little or is there a setting on the Ecos 2 that I have not ticked correctly? The track runs in Motorola mode & all but this loco has no problems. Can I maybe discard the relay & let the Aux 2 outlet drive the motor or will that exceed its output limit. I am open to all suggestions.
D.A.Banks
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Offline Lollo  
#2 Posted : 26 June 2011 11:15:25(UTC)
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Lollo

New Zealand   
Joined: 22/06/2009(UTC)
Posts: 365
Hi Dave,
Is your transformer set to the 21 volt setting. Refer to page 11 of your Ecos manual.

Cheers,
Brian.
Brian
Yaasan's Desktop Station/Railuino & Marklin MS2, DB Era III/IV Diesel & Steam, ESU Loksound/Lokpilot & Lokprogrammer, Marklin mSD, Tam Valley Depot Octopus III Servo Controller.
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Offline Dave Banks  
#3 Posted : 26 June 2011 11:20:33(UTC)
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Dave Banks

Australia   
Joined: 08/03/2006(UTC)
Posts: 1,041
Location: Gold Coast, Australia.
Brian, I am giving the owner of the Ecos 2 a call now & let him check this this setting. Thanks.
D.A.Banks
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Offline H0  
#4 Posted : 26 June 2011 11:54:58(UTC)
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H0


Joined: 16/02/2004(UTC)
Posts: 15,432
Location: DE-NW
Hi, Dave!
Originally Posted by: DaveB Go to Quoted Post
To operate the three fans on the tender I have hooked up a FRT2-S DC12v relay to switch the fans on via Aux 2.

With the original decoder, the fans are connected to the decoder output. So they are fed with rectified current. I presume a DC motor is used for the fans.

Now you feed them with a relay. Do they get rectified current (from the decoder) or unrectified current (directly from the track)?

A DC motor connected to the track power will do three steps forward and one step back with a Märklin controller and two steps forward and two steps back with an ECoS (using default settings).
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
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Offline Dave Banks  
#5 Posted : 26 June 2011 12:10:58(UTC)
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Dave Banks

Australia   
Joined: 08/03/2006(UTC)
Posts: 1,041
Location: Gold Coast, Australia.
Brian, turning voltage 14V or 21V makes no difference.

D.A.Banks
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Offline Dave Banks  
#6 Posted : 26 June 2011 12:19:20(UTC)
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Dave Banks

Australia   
Joined: 08/03/2006(UTC)
Posts: 1,041
Location: Gold Coast, Australia.
Tom, many thanks for your reply. Yes the relay allows direct power from the track (unrectified current). So if I remove the relay & use the Aux 2 output to power the motor we should solve the problem then? I believe the motor is DC.
D.A.Banks
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Offline H0  
#7 Posted : 26 June 2011 19:17:30(UTC)
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H0


Joined: 16/02/2004(UTC)
Posts: 15,432
Location: DE-NW
Originally Posted by: DaveB Go to Quoted Post
So if I remove the relay & use the Aux 2 output to power the motor we should solve the problem then?

I think so - unless the motor draws too much current for AUX 2 (in this case the overload protection of the decoder should keep the blue smoke in the decoder).

This would allow you to set AUX 2 to "Smoke" so the fans will run faster while the loco is driving. You can use AUX 2 to adjust the speed if it's too fast.

That's what I would try.
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
UserPostedImage
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Offline Dave Banks  
#8 Posted : 26 June 2011 23:26:41(UTC)
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Dave Banks

Australia   
Joined: 08/03/2006(UTC)
Posts: 1,041
Location: Gold Coast, Australia.
Tom, I think the decoder would have too much load on the Aux 2 output running that motor. I will have to think of something else. Cannot afford to loose that MFX decoder. I rather play it safe. Any other suggestions on this one?

Edited by user 27 June 2011 05:17:00(UTC)  | Reason: Not specified

D.A.Banks
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