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Seeking Assistance With 'DelTang' Rx61-22-W
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 Posted: Wed Nov 29th, 2017 08:39 pm
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bobquincy
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or set the maximum speed on the rcvr so it does not exceed 3 V average (maybe about 80%, program 1-1-5-8-0).

Last edited on Wed Nov 29th, 2017 08:41 pm by bobquincy



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 Posted: Thu Nov 30th, 2017 04:03 am
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Corbs
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Interesting, I did not know that was possible. I will look in to it when I have the model on the bench once more. Thank you all for your help.

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 Posted: Thu Nov 30th, 2017 07:14 pm
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bobquincy
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One of the best features of the Deltang receivers is the great amount of flexibility that David programmed into them (thanks, David!). Almost every setting can be modified and it can make a big difference in how a model runs.

boB

Last edited on Thu Nov 30th, 2017 07:15 pm by bobquincy



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 Posted: Fri Dec 1st, 2017 06:33 am
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Corbs
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Alas! After the loco suffered some hardware woes (schoolboy error of matching a coarse worm gear to a fine axle gear resulting in one stripping the other, now rebuilt with fine gears on both) I got it back together again and it's back to being very unreliable. I've tried it with the connections on the motor reversed and so far it seems to do the runaway in only one direction (currently when going backward). However rather than only doing it on full throttle as it did yesterday, it does it at half throttle now.
When it runs away, the LED on the Rx flashes slowly rather than solid light as I previously thought, which makes me think it is along the lines of it losing signal, as the flashing speed is the same as when you are binding it.
This test was with the controller next to the Rx, and the mended aerial fitted.

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 Posted: Sat Dec 2nd, 2017 01:00 am
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fallen
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Corbs,

The more recent RX 6 software (sorry, I don't know the date it changed, if it did, David T may be a be to help here) seems to give a single slow flash when it loses the Tx signal completely, but a double flash if it still has the signal but is not selected by the Selecta switch. Is it a single or double flash when it runs away?

Also, have you checked the LiPo voltage?

Frank

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 Posted: Sat Dec 2nd, 2017 01:23 am
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Corbs
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Hi Frank, when it runs away (seems to be about half speed reverse) the flashing goes Flash-long pause-Flash-long pause-Flash etc. So it's the same as it is when the Rx is switched on but not the Tx.

I've checked it with a few different batteries.

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 Posted: Sat Dec 2nd, 2017 04:01 am
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fallen
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Hi Corbs,

I had a fault a couple of years ago that meant that I had to bind the loco to the TX every time. It seemed to forget the binding when it was switched off. I thought it must be a fault in the Rx but when I tried the Tx with other locos and the loco with other transmitters it turned out to be the Tx that was faulty. It may be you have a similar problem ie the Tx is forgetting the binding data and so the link to the Rx is lost. Can you try the loco with another Tx? Or the Tx with another loco?

I fixed the fault by changing the transmit module inside the Tx.

Frank

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 Posted: Sat Dec 2nd, 2017 04:01 am
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fallen
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Duplicate post.

Frank

Last edited on Sat Dec 2nd, 2017 04:02 am by fallen

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 Posted: Sat Dec 2nd, 2017 06:40 am
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davecttr
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fallen wrote: Hi Corbs,

I had a fault a couple of years ago that meant that I had to bind the loco to the TX every time. It seemed to forget the binding when it was switched off. I thought it must be a fault in the Rx but when I tried the Tx with other locos and the loco with other transmitters it turned out to be the Tx that was faulty. It may be you have a similar problem ie the Tx is forgetting the binding data and so the link to the Rx is lost. Can you try the loco with another Tx? Or the Tx with another loco?

I fixed the fault by changing the transmit module inside the Tx.

Frank
It could be a fault with the transmitter module within the Tx but as far as I know the TX does not save any data about the Rx's that are bound to it. All the Tx does is transmit 49 data packets per second which apart from the security and checking stuff contain the 'name' of the Tx and the values of several data channels, one of which is the position of the selecta switch. these are stored in the RX memory so when it is switched on it searches for the Tx name and selecta switch position. If it finds the correct transmission the LED goes on solid. If the Tx name is correct but the selecta switch position is not it the Led goes briefly on and then starts the selecta flashing sequence.
the best thing for Corbs to do is test his malfunctioning Rx with another TX



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 Posted: Sat Dec 2nd, 2017 01:19 pm
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fallen
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Hi Dave,

Your understanding of how the system works is the same as mine. You would expect the fault to be in the Rx not the Tx, but in fact it was the Tx that was faulty.

This was an old loco with a Tx21. The Rx did not have the Selecta code so I did not use it with the Tx22 I use for the rest of the fleet. I only found it when I noticed a second old and infrequently used loco displayed the same fault and began to suspect the Tx. I then tried it with the Tx 22 which will drive the older Rxs just without the Selecta function, and the Rxs were fine.

My guess (and it is a guess) is that there was some fault in the retention of the Tx identifier, so it did not give out the same identifier each time.

As I use servo connectors to plug the Tx module into the transmiter box, it was fairly easy to get a new module and swap them over, and it fixed the fault.

You are right, the best thing is to try different Tx/Rx combinations to identify where the fault is, if you have access to different units.

Frank

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