I have recently been asked to convert back to AC and to digital, a 3021 converted to DC via a HAMO magnet. It's a LFCM.

I changed the connections, installed a Lokpilot v2.0, tested it OK, and it all went fine. A couple of weeks later it was back to the base with hickups at high speed, i.e., more than half the speed bars in the Mobstat.

Checking the total current consumption of the decoder didn't yield more than 500mA at the time of the cuttofs. Slightly before the cuttofs begin, the ammeter reads about 360mA. I did this in the AC range of the meter. All this with a lamp on, and it's an old style big one. With the lamp off, the hickups still occur, more or less in the same speed range.

Now, can anybody report a successful conversion of a HAMO LFCM with a Lokpilot? Or is it just too much current draw for this decoder?

Shared experiences much appreciated....

Luis

Check the CV's 51-53. You will have to adapt them to the motor.
If this doesn't help then remove the condensators.
Bart

I digitalized several hamo locomotives with lokpilots and Lenz gold decoders, no problems at all.

Really I have no idea what can be the problem.

Hi all,

Thanks for all the suggestions! I'm gonna check all of them and will report back.

Thanks!

Luis

If it is regarding CVs 51-53 it's easy to understand. The speed regulation requires a feedback signal indicating the actual speed; this signal is heavily dependendent of the motor; the magnet field strength for instance. The response time of each installation must also be taken into account; the feedback circuit must be more patient with a larger motor before applying more force.

/Lars