Re: [Emc-users] 7i76 and spindle control

2014-09-26 Thread andy pugh
On 26 September 2014 04:28, Peter C. Wallace p...@mesanet.com wrote: The 7I76 spindle analog out circuitry expects a regulated 5V to 12V supply, your supply has about 10K Ohms of series resistance so is not a suitable voltage source. You can use an isolated external supply of 5 to 12V It

Re: [Emc-users] 7i76 and spindle control

2014-09-26 Thread Gene Heskett
On Friday 26 September 2014 05:58:37 andy pugh did opine And Gene did reply: On 26 September 2014 04:28, Peter C. Wallace p...@mesanet.com wrote: The 7I76 spindle analog out circuitry expects a regulated 5V to 12V supply, your supply has about 10K Ohms of series resistance so is not a

Re: [Emc-users] 7i76 and spindle control

2014-09-26 Thread John Alexander Stewart
Andy, Gene - I do have a spare 12v linear regulated supply and a nice small 5v switching sitting by my new mill, was going to prototype with the 5v first. (KBIC says 0-7v input in voltage follower mode - 0-5v will get me going) Interesting about the dc-dc converters; on reading, as Gene says,

Re: [Emc-users] 7i76 and spindle control

2014-09-26 Thread Gene Heskett
On Friday 26 September 2014 10:24:09 John Alexander Stewart did opine And Gene did reply: Andy, Gene - I do have a spare 12v linear regulated supply and a nice small 5v switching sitting by my new mill, was going to prototype with the 5v first. (KBIC says 0-7v input in voltage follower mode -

[Emc-users] 7i76 and spindle control

2014-09-25 Thread John Alexander Stewart
I have a G0704 mill (known up here as a King Canada KC20-VS) that is being CNC'd, with only one real issue cropping up. The spindle speed control - original is a 4.7k pot, the spindle circuit board is a copy of a KBIC 120 style board. With the 4.7K pot in place, I measure 4.14v across the outer

Re: [Emc-users] 7i76 and spindle control

2014-09-25 Thread Peter C. Wallace
Subject: [Emc-users] 7i76 and spindle control I have a G0704 mill (known up here as a King Canada KC20-VS) that is being CNC'd, with only one real issue cropping up. The spindle speed control - original is a 4.7k pot, the spindle circuit board is a copy of a KBIC 120 style board. With the 4.7K

Re: [Emc-users] 7i76 and spindle control

2014-09-25 Thread John Alexander Stewart
Hi Peter; Thanks for the response - I'll try that tomorrow. My first mill (different manufacturer) was an easy replacement - no external power required - so my mind was set in just do it the same mode. So far, Chris Morley's pncconf is working well with your products - having fun with this