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Just another modeller
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QUOTE (Geoff Booth @ 14 Jun 2008, 23:12) <{POST_SNAPBACK}>Having got my N scale layout up and running with a Lenz Set 100 in control, if I get a short then any loco fitted with a Lenz mini-gold decoder (via a NEM651 socket) sits there with the lights flashing once the short is reset. The locos with TCS M1s don't seem bothered! I cannot find a simple way of resetting them but assume there must be one. If I lift the loco off the track and replace it, it's fine but not ideal to say the least.

Anyone able to give me a simple pointer as to what is happening here please and a better way of resolving the reset?

***Hello Geoff

Normally this front/rear light flashing is supposed to indicate that the decoder has detected a motor short.

to quote Lenz: "When you first turn on your system a blinking front and rear headlight indicates that the gold decoder has identified a motor short. CV30 is set and the motor outputs are deactivated. If this condition occurs the fault should be corrected before you try to operate the decoder."

PERHAPS: Its reacting to the voltage peak that happens after a short. If it is CV 30 will have a value other than zero in it - reset it to zero.

To stop it the easiest way will be no more Lenz Gold decoders.... but as a "patch" type fix, you could try adding a suppression / terminating filter to your track bus as this will "damp" the offending peaks. The parts cost is pennies only so its worth doing anyway as it will give long term protection to ALL decoders.

It is a 0.1micro Farad ceramic disc capacitor in series with a 150 ohm (2~3 watt) resistor connected across the bus

ie:

left rail bus > resistor > capacitor > right rail bus

ALSO - you should lower the Lenz rail voltage for N scale - it is far too high. Try to reset to about 11~12 volts - ex factory is over 15.

The latest Lenz command stations/boosters will, I think, let you do this via a software command in their setup instructions - this MAY also help your problem - and will certainly help overall long term reliability too.

Regards

Richard
DCCconcepts
 

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Just another modeller
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QUOTE (Geoff Booth @ 15 Jun 2008, 17:55) <{POST_SNAPBACK}>Thanks Richard I have dropped the track voltage to 12v (I seem to be missing my LZV100 manual though...) but easily done once checked on line and so far that seems to be better all round. I will look at the other add in filter idc.

As zmil says your knowledge on this topic is quite exceptional!

Regards

Geoff


***Hi Geoff - I'm pleased the ideas have helped.

That over high track voltage of EU made control systems is a curse and the cause of many, many minor problems - plus the real culprit in the "it was running OK for ages but now its dead" death of many decoders.

Fingers crossed that if you also add those very simple filters, your Lenz Gold problems will disappear totally!

Richard
 

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Just another modeller
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QUOTE (upnick @ 16 Jun 2008, 07:57) <{POST_SNAPBACK}>Hi on the subject of voltage on Lenz equipment i have a TR150 power supply from them which is sekundar i presume is the output 15V i intend to use with my NCE procab for my N gauge American layout, do i need to turn down the voltage in the same way as it is a sealed unit with no adjustment facility i can find on it.
Or will the procab adjust the voltage going to the track.

***The NCE PowerHouse Pro control box / command centre+booster will regulate the voltage internally.

Regards

Richard
DCCconcepts
 
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