Machsupport Forum
Mach Discussion => General Mach Discussion => Topic started by: Fred_evans on May 03, 2019, 07:03:18 AM
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Hello Chaps,
Mach3
this has happened to me at least twice in the last few months
when I switch the system on i find that one or both steppers have changed direction.
I dont know - maybe someone can throw some light on the subject.
We have been experiencing a lot of mains power outages.
In order to alleviate the situation I have installed a 60KW 3 phase generator set .
could this have something to do with it? maybe phases mixed up?
any discussion will be welcomed
regards fred
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Please install power EMI filter for your machine controller box.
If single phase something like
https://www.ebay.com/itm/Single-Phase-AC-Power-Line-EMI-Filter-AC-115-250V-50-60Hz-20A-Suppressor-/123684313976
If three phase
google..
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thanksfor the tip
what does this actually do?
regards
fred
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this has happened to me at least twice in the last few months
when I switch the system on i find that one or both steppers have changed direction.
I can't think of anything that could cause this, except maybe a bad .xml file, or a pirated Mach3 license file?
A power loss can't change any Mach3 settings.
I can't see how an EMI filter would do anything.
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Mch 3 currupts teh XML when the PC looses power and cannot fully create /Save the XML. You SHOULD have saved off a copy of a good XML so you can restore it on power up after a power loss. You can create a Batch file to auto transfer teh backup file to the mach3 folder.
(;-) TP
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thanksfor the tip
what does this actually do?
regards
fred
Here is a good read:-
https://product.tdk.com/en/products/emc/emc/power-line/technote/pdf/generaltec_power-line_en.pdf
I suspected that motor direction change is a malfunction cause by CONDUCTED NOISE along the power cable(s). Hence I proposed Mains Input EMI filter.
Motor direction is just a signal change at at dir pins of the BOB and not necessarily will corrupt the MACH3 XML file.
I had a electronically controlled Centralized gas heater that blew 3 times and ALWAYS in WINTER just because I did not have Filters and/or Surge protectors installed. After I put in a filter, I have had over 10 years FREE of problem.