New start

**Nr1madman** · 15-05-2018

Originally Posted by m_c

Is the E-stop a dedicated pin, or configurable to any pin?

Configurable to any pin.. get the same error when using pin 12 (like usual) but no wire connected :)

Gonna try to morrow to assign it to a pin or port thats not connected to anything but actually exist physically. Now when I disable e stop I assigned port 0 pin 0 and that doesn't exist..

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**m_c** · 15-05-2018

The non-existent pin may actually point to something that does exist.

I'd assign it to a pin that physically exists, and also wire the pin either high or low. I've got no idea how pins on UCNC controllers are configured/wired, so leaving it unconnected means it could be floating high/low.

**driftspin** · 16-05-2018

Originally Posted by Nr1madman

This might be it.. not power setting but background programs.
I have checked power settings and they are set to "always on"

I'm using my old home computer so there are all sorts of programs installed. Should test reinstall but I have no valid windows cds left. Stuff like that gets destroyed some were between child 2 and 4 ;)

Its still strange that it starts to happen after about 2h and not when running pockets and contours just 3d....

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Hi nr1madman

Do you have fault relais from the drives hooked up to the emergency circuit?

Just guessing?

Grtz Bert.

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**Nr1madman** · 16-05-2018

Originally Posted by driftspin

Hi nr1madman

Do you have fault relais from the drives hooked up to the emergency circuit?

Just guessing?

Grtz Bert.

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Hey!

No I haven't gotten that far yet :)
The e stop circuit is made of e stop buttons and a momentary button driving/latching a relay.
This relay supply the signal to the bob for e stop and power the drives psu and vfd.

So in my thinking a fault in relay or e stop buttons would disable drives and vfd aswell...

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**Nr1madman** · 17-05-2018

Okey..
Made some changes.
Jazz will get upset because I made several changes at once and should this work I still don't know the fault :)

I looked at all wiring and found some places where I could improve so a little better cable management. Moved my relays with 24v logic further away from 230v and 50v.
Also disconnected and removed vfd control from the bob. Had it connected to on/off relay and 1-10v speed control.

After these changes it's been running 3h without fake e stop.

Read on cncdrive forum about similar problem and it turned out that it was interference from switches that caused it. Strange when the e stop was set to port and pin 0!

If it continues to work for me I need another solution for vfd control! Is rs485 to usb twowire system ok?
But that only let's you control speed and not start/stop from system? Or am I mistaken? :D

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**Doddy** · 17-05-2018

Originally Posted by Nr1madman

Okey..
Read on cncdrive forum about similar problem and it turned out that it was interference from switches that caused it. Strange when the e stop was set to port and pin 0!

If it continues to work for me I need another solution for vfd control! Is rs485 to usb twowire system ok?
But that only let's you control speed and not start/stop from system? Or am I mistaken? :D

You can control the forward/reverse control, as well as spindle speed, over the serial bus - I do that now with Mach3, using the HuanYang controller plugin. Clearly depends somewhat on your controller (being a HuanYang) and the plug-in for UCCNC (I've not tried it, but it seems pretty basic functionality - I've got the code for the LinuxCNC driver and it's just a different control sequence that gets sent).

USB interface?, it's fine using that for a USB->Serial convertor - there's nothing time critical sent over this interface if all you're doing is controlling spindle speed etc (standard chinese AC spindle, etc). Just use a decent twisted-pair cable to connect the interface to the spindle inverter. (also, I can't remember WHAT connector I used - but I found it easier to fit a 2-pin connector into the side-wall of the inverter to allow the modbus interface to be easily made/unmade (my frequent changes to the control box solution made me want some flexibility between modbus and discrete control).

**A_Camera** · 17-05-2018

Originally Posted by Nr1madman

If it continues to work for me I need another solution for vfd control! Is rs485 to usb twowire system ok?
But that only let's you control speed and not start/stop from system? Or am I mistaken? :D

Yes, you are mistaken. I don't know which VFD you have, but as far as I know, all VFD which allows RS485 control has at least on/off/forward/reverse/speed commands. I control mine via Modbus protocol and even download some monitoring data.

The USB dongle is fine for Modbus but some models are better than others. I have one like this...