The Craftmans Shop > New from Old
The Sequel - Oh Blimey I bought a CNC Lathe (Beaver TC 20)
cnc-it:
On the spindle orientation..a very odd fault..as you would think the control would alarm if it wasn't in the correct position?
awemawson:
Welcome to the forum, why don't you post a bit in the Introductions section and tell us a bit about your projects ?
awemawson:
--- Quote from: cnc-it on August 14, 2018, 08:28:23 AM ---On the spindle orientation..a very odd fault..as you would think the control would alarm if it wasn't in the correct position?
--- End quote ---
It just 'hangs' with the running light lit, so I expect that it's waiting for an input from some point on the ladder logic. I just wish I could source a copy of 'Step5' software that talks to the controller and lets you examine the PLC ladder in real time. All the hooky copies I've seen so far are missing the authorisation code :palm:
awemawson:
I decided that at least I could easily solve the issue with the FXM-3 Field Coil DC Drive Card overheating by adding a fan - actually easier than making a larger, but remotely mounted heat sink, which was option 2. The heat sink is up at 415 volts so needs to be away from fingers!
240 volt 80 mm axial ball bearing fan ordered from RSComponents along with some M4 nylon stand off pillars arrived this morning while I was pushing earth about with the JCB803. This evening I drew up a simple mounting plate in AutoCAD which via SheetCAM was ported to the CNC Plasma table and cut out of 2 mm steel plate, edges bent up to form a flange for rigidity, and a test assembly performed.
All looks good, so it got a coat of Satin Black from a rattle can, and I'll probably fit it tomorrow if time permits.
I praise the day I rescued that CNC Plasma Table - oh boy does it make this sort of thing easy :clap:
cnc-it:
Thanks Andrew, yes I will do an introduction had forgotten about that.. :Doh:
--- Quote from: awemawson on August 14, 2018, 12:15:09 PM ---
--- Quote from: cnc-it on August 14, 2018, 08:28:23 AM ---On the spindle orientation..a very odd fault..as you would think the control would alarm if it wasn't in the correct position?
--- End quote ---
It just 'hangs' with the running light lit, so I expect that it's waiting for an input from some point on the ladder logic. I just wish I could source a copy of 'Step5' software that talks to the controller and lets you examine the PLC ladder in real time. All the hooky copies I've seen so far are missing the authorisation code :palm:
--- End quote ---
I have had this happen on a few different machines...it always turned out to be the post processor..either me using the wrong one for the machine or when I was testing a new modified post. If it's a PLC error or a mechanical error I always get alarms..but I have never used Siemens..only Hurco, Fanuc and Heidenhain.
John
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