Emco PC Turn Turret

Hello.

I am trying to find out some details about this turret control.  I am having some problems with mine and thought that maybe someone on this thread could. help.

A few things are happening on mine...   
D2 was burnt pretty badly and I dont have any markings on mine to replace.

Could anyone verify what D1 and D2 markings are on the diodes?

Lastly, the 100Watt resistors are getting really hot.  I dont feel like this is normal, although I expect them to get warm, they are discoloring the PCB.

Any thoughts, or help?
Jason

Jpotts13 wrote:

Lastly, the 100Watt resistors are getting really hot.

100W resistors normally do get very hot during use, is the value correct?

Sorry meant 100 OHM 4watt

Hate that I'm so late to the game here, but I've got a perfectly working classicladder config for these machines i can send you if you still aren't having luck
theferalengineer@gmail.com

I am trying also to make my turret move. Emco 50 pc turn.
I ask my friend that is good on electronics what to do. Because there is 5V and 24v involved. He say, that I only need 2 x opto (tlp 291) and to 2 x resistors (10k ohm)I think some other optos will work too, but this is what he had on home.So we use them.

So here is what you can do to change turret optosensor 5v signal to 24v signal.
  If you look at the picture where i hold board on hand. There is 3 leads that goes out from board:White lead goes to mesa board input 1Red wire goes to mesa board input 2black wire goes to mesa board input com 
The other wire with 10K ohm resistors:
yellow wire goes to mesa board input 1
another yellow wire goes to mesa board input 2
both yellow wires has 10K ohm resistor.
red wire goes to 24v power +  

I also draw opto pinout to picture
Pin 1 is connected to turret optosensor signal (there is 2 signal 1 for home and another signal for every tool)
Pin 2 is connected to turret optosensor (5v ground)
Pin 3 is connected to mesa board input com
Pin 4 is connected to mesa board input 
Pin5 is for controlling the board. when +24v is connected to this pin, turret motor starts move forward. When there is 0V motor is moving backwards.Hope this helps someone who want to use the orginal turret control board.  

Edit. Today I  tested this modification, its working great. 

 

 @evengravy Hi could you share the classic ladder mod you needed to change for the 6 position tool changer please.