Page 1 of 1
Orac spindle won't work
Posted: Thu 04 Apr , 2013 23:50 pm
by murray3648
Hi all,
I have acquired an Orac CNC lathe to teach myself CNC turning.
I,am not a wiring or electronics person but have a good knowledge of 3 axis CNC and laser programming and cutting.
I am able to get the lathe programmed and carrying out the program's but the spindle will not turn.
Tried to run the spindle in manual mode also but no joy.
I took the motor out and had it tested and it is fine.
I have checked the fuses that I can see inside the back of the machine and they are all fine.(5 in total)
Has anyone got any suggestions as to what might be the problem.
Regards Paul.
Re: Orac spindle won't work
Posted: Fri 05 Apr , 2013 10:38 am
by Denford Admin
I think you'd need to send a photo of the electronics and the front panel.
Maybe it's been modified to work differently?
Re: Orac spindle won't work
Posted: Sat 06 Apr , 2013 9:31 am
by triac
Hi Paul
I believe there were several different makes of motor control units fitted but all are VFD units.
To check which your lathe has it is positioned at the right hand side of the board viewed from the back.
There is some info in the Download files section relating to an electronic on-board overcurrent device, maybe this hasn't reset itself after an overload situation.
Picture of unit fitted in my Orac.
Rgds, Emgee
Re: Orac spindle won't work
Posted: Sun 07 Apr , 2013 0:32 am
by murray3648
Hi Emgee
This looks like the same VDF unit in mine from memory.
I was going to take some pics tomorrow of the parts and post them up here.
If this is the same VDF unit can it be reset manually or what do I need to do?
Thanks Paul.
Re: Orac spindle won't work
Posted: Sun 07 Apr , 2013 13:44 pm
by murray3648
Hi Again
These are the photos of my Orac and the electronics.
Feel free to have a look and let me know if you see anything out of the ordinary.
As I have said it all works including the both tape decks tool changer but not the spindle.
Please help if you can.
Thanks Paul.
Re: Orac spindle won't work
Posted: Mon 08 Apr , 2013 9:01 am
by Denford Admin
The Brown Pestell drive manual is here:
viewtopic.php?t=1243
Re: Orac spindle won't work
Posted: Mon 08 Apr , 2013 21:52 pm
by murray3648
Still at a loss on this.
The electronics are just a bit beyond my capabilities.
The led on the side of the board is not comming on and only 24volts is going out to each phase of the motor.
Does anyone know if this driver board can be sent to someone for testing or can you buy a new one.
Maybe some of you guys have a spare lying around that you would sell.
