Geck 540 motor drivers??

[Clive S]

Quote :I would be happy to go to a toroidal PSU
This sort of thing but it does depend on the motor and drives used.
PS408-5 Linear power supply ..Clive

[Jonathan]

Lets all link to Zapp ;)

PS408-5 Linear power supply

[JAZZCNC]

Lets all link to Zapp ;)

PS408-5 Linear power supply

That reminds me.!! .. . Need to throw a thread up for Gary.??

[Gary]

Lets all link to Zapp ;)

PS408-5 Linear power supply

Thanks Jonathan, much appreciated.

[m_c]

I did wonder if you'd managed to sort this problem or not.

One thing I never thought about on your last thread, is the shed earth good?
You could have all your grounds connected perfectly, but if the grounds aren't actually connected to anything, then they won't be doing much good. A quick and dirty way to test, is plug an RCD in, and try the test button. If the earth is bad, then it won't trip.
Even if it does test OK, and the shed doesn't have it's own ground rod, I'd still be inclined to add a ground rod.

[gerrymoore]

Hi again! Yes, my workshop has a dedicated 30amp supply from the house meter with a full consumer unit and trips separate to the house.....just gone out now and tested the RCD and it works fine. Plus I am running the pc and drive electronics from a separate extension cable plugged into a different house ring main. I would be happy to add a ground rod though...anything that might get me up and running again!!

[gerrymoore]

Here are the pics...they look worse than they are...I have lost my temper with it more than once lately!!!

[m_c]

Have you tried an RCD in the shed itself?
The RCD in the house will be connected to the house earth, which the shed will also likely be earthed to, but if there is anything wrong with the earth wire to the shed, then the shed itself may not be earthed. Trying an RCD, or one of those testers with the three neon lights that plugs into a 13A socket, will tell you if the earth is actually good.

Looking at your control box wiring, the main power supply to the drives should not be daisy chained. The diagram on the Gecko site at http://www.geckodrive.com/support/st...ly-basics.html shows how they should be connected. If connecting everything to the power supply is not practical, run short wires from the power supply to a star terminal, then run the wires to the drives from there. For the star terminals, a couple suitable mounted/insulated bolts are ideal and just use ring terminals to connect the wires.
Daisy chaining the logic (5V?) supply is probably ok, but I'd personally be inclined to add an electrolytic capacitor over the power terminals of each drive to ensure the drives get as clean a power supply as possible. Do that for both the logic, and the main power supply feeds at each drive.

What actually stops working on the BOBs?
It may give us some idea as to what is causing the problem.