Thread: Control Schematic Advice
I’m here lookingfor help again and hoping you may be able to spare some time to review my schematic,as I am going around in circles and confusing myself.
I have tried tobreak down the schematic into sub-systems that simplifies it.
Page 1 –Covers the VFD, spindle control, breakout board and ESS.
Page 2 – Thepower supplies for the various boards, drives and VFD.
Page 3 – Relays,Option 1, in this I proposes the use of 4PDT 24Vdc 10A relays for the mainsafety relays (K1, K2 & K3), limit switches, home switches and touch probe.
Page 4 – Relays,Option 2, this is my failed attempt of incorporate a couple of PILZ relays Ihave, but got stuck with the wiring. I wanted to use a PNOZ X7 (774059) as K2and either PNOZ X9P (777609) or PZE 9 (774150) as K1. Not even sure it’spossible.
Page 5 – Stepperdrives and motors.
I have beenlooking at this for some time and need further advice as the components havechanged to include spindle control, ESS, etc.
I've read otherposts on MYCNC regarding control panels but the selection of the various componentssuch as suitable MCBs, home & limit switches, earthing, etc isconfusing due to the number and variation available.
Any adviseor guidance will be welcome.
Not sure why the pdf's are showing up as black boxes but they seem to open?
Last edited by GTJim; 02-03-2014 at 11:54 AM.
Shit forgot to reply to your email Jim Sorry I will now. Or better still email me your number and I'll give you a ring as it much easier over the phone.
I've not looked in great detail but the following stand out to me-
Home switches should be wired NC if you're looping them together.
Do you really need to use two seperate relays for limits and E-stops?
I know it can be nice to know what's just caused everything to grind to a halt, but it does add cost and complexity for little practical benefit when you could simply wire the limit swithced in series with the e-stops. And if you're unsure what's caused things to stop, hitting the limit overide should tell you if it's a limit or e-stop issue.
You ain't getting nothing on technical merit!
He's got COM, NC, and NO shown, but has used the COM & NO in the diagram.
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