jack Jack 513A engine problem...

[FREDERIKDIAMOND]

Hello,

I’m having such an annoying problem with my “JACK JK-513A” servo engine.

The engine is connected to my “JUKI DDL-8700”.

So here’s the issue: The engine won’t go any faster than 02 in speed... Even though the speed is set to 20-30. Everything worked fine just the other day. Today when I started to sew, I received an "E5 error" — after I solved the error, it seems like the machine won't sew any faster than 02.

Please check the following demonstration video by clicking the link: Demonstration video

 

Does anyone have an idea, of what I can do?

 

(Btw. thanks for letting me join the community)

 

[Constabulary]

W/o knowing details, so I guess you set the speed correctly (don`t know - video is too fuzzy and is not playing well on my end). So I would guess in the accelerator unit the lever with the magnet is not properly set. I guess it is too far back (away from the hall sensor). I guess you have to move it towards the hall sensor a little bit.

I only can guess... so I would recommend contacting College Sewing or the dealer you bought the motor from.

Edited December 14, 2019 by Constabulary

[dikman]

E5 indicates an error with the Hall sensor, how did you clear the error? Have you tried resetting to factory defaults?

[FREDERIKDIAMOND]

@dikman I followed this tutorial video on YouTube, in order to solve the E5 error: 

 

[FREDERIKDIAMOND]

@dikman I'm going to try to reset the engine, and see if it's gonna help — hopefully, it will.

[FREDERIKDIAMOND]

@dikman @Constabulary So I've tried to reset to factory settings, without any luck — because the machine still didn't work correctly. When I reset to factory settings, the display shows "OK", meaning the reset was successfully done.

I wonder if it might have anything to do with the speed governor? It just seems very strange to me...

 

Here's the manual: http://en.chinajack.com/DownLoad/201706271100232.pdf

The manual is not exactly made for the same model, it seems (not sure tho).

Image of E5-error

Link to a demonstration video

[Constabulary]

I think with speed governor you mean what I called accelerator unit - the small squared box with the white plastic lid and the small lever on the outside. When you open it (3 screws)  you see a small black lever and I think it is too far away from the hall sensor - the small black thingy with 3 poles which is soldered on a  small green board. You probably have to play with the position of this black lever.

 

[FREDERIKDIAMOND]

@Constabulary Thank you so much for your time and help — I really appreciate it

Edited December 15, 2019 by FREDERIKDIAMOND

[FREDERIKDIAMOND]

It works now Thanks for the help

[dikman]

So what was the problem?

[FREDERIKDIAMOND]

@dikman It was the accelerator unit, it moved its position. I don’t know how, maybe by the “E5 error”?

[dikman]

At least it was an easy fix.

[Constabulary]

Just to put it straight - it was the black lever?

[FREDERIKDIAMOND]

On 12/19/2019 at 1:21 PM, Constabulary said:

Just to put it straight - it was the black lever?

Yeah, exactly.