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- Users: spudgunblunder
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VFD Under Voltage Fault
@ RedSnake, Thanks yes I should have said code UV. I'm not use both VFDs at the same time. The Lathe VFD started playing up so then replaced it with the mill VFD. Both are playing up now so bought a new one which I switched over last night and works fine. @ edison123, I can't find any loose...- spudgunblunder
- Post #6
- Forum: Electric motors & generators engineering
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VFD Under Voltage Fault
Hi all, I've had 2 single phase to 3 phase 2.2kw 10A VFDs for several years now with no issues. One on my lathe, one on a mill. Recently got an INTERMITTENT error of UU undervoltage (on both VFDs). It can run fine for ages then suddenly trip. Sometimes under load, sometimes not. Tried with...- spudgunblunder
- Thread
- Replies: 7
- Forum: Electric motors & generators engineering
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Common Datum System of Rectangular Pattern of Holes
Thanks pmarc, So the 4mm slot IS constrained to the theoretically exact line between the two 10mm holes? I think I correct to say this is confirmed by section 5.4.2 of BS EN ISO 5458:2018?- spudgunblunder
- Post #4
- Forum: Drafting Standards, GD&T & Tolerance Analysis
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Common Datum System of Rectangular Pattern of Holes
Hi all, Does the common datum system A (of 4 centres) control the slot to be symmetrically within a tolerance zone of 0.5mm along the TED line between the holes? Ref section 6.6.4 of BS 8888:2020 (not sure if I can upload screen shot?)- spudgunblunder
- Thread
- Replies: 4
- Forum: Drafting Standards, GD&T & Tolerance Analysis
