Efka Variostop 3-Phase motor spins backwards

[Uwe]

I got the machine to work, yay! I switched two leads inside the motor connector box and the 3-phase clutch motor spun the correct direction. 

The Efka controller is a 4P35P377Y2

 

The closest Efka Manual I could find was the Efka 4P35A Manual, which talks about all the functions this controller has (I think.)

So the machine works and I'm very happy about that. I'd feel even better if I understood exactly how and why it works. I'm not 100% convinced yet that the lubrication system works as it should - I'm not seeing any bubbling or splashing of oil in the upper viewing window. I did fill up the reservoir, which, for some reason, was empty!

The underside of the machine looks intimidating and complex.

This Adler and Efka combo has quite a few automated and switch actuated functions: Automatic starting lock stitches and end lock stitches (optional and configurable) activated by brief pedal taps front and back. Reverse via a little finger-operated toggle switch. Very cool, quick foot lift adjustment for alternate, maximum foot lift activated via knee switch for climbing over seams etc. Foot lift via pedal heeling. The automated thread cutter may need a little tweaking - it cuts most of the time but not always.

Speed control on this system is actually really good - I was surprised. This Efka may be the first clutch motor drive systems I actually liked!

Here's a demo video I made for the potential buyer of this machine:

 

Edited January 3, 2017 by Uwe

[gottaknow]

Hi Uwe, 

i went completely through one of these last year. The thread is pinned if you want a good look at the oil system. If it were me, I'd make sure there's oil getting to the top shaft. This machine has a complicated oil system. I converted Venators to an "oil it yourself" system. The lack of oil had caused some serious issues. Good job getting the motor going. 

Regards, Eric