It has been a busy day on my thread!
Hello All,
Been on site all day like all of this week and next week. Just got home and found this extensive discussion. Let me clear the air a bit...
First- I respect electricity
Second - would rather have a warrenty honoured instead of voiding it, i'm not pulling anything apart. First i'm interested in getting a safe function cnc that ican use and not worry about.
Let me just recap,
receaved a new cnc package, followed assembly instructions. Which are the instruction sent to all purchases of this type of small scale CNC router. Once the machine had been set up began to use the unit, it tripped the circuit, fine it was on the same RCD as other appliances (PC, controller box, radio, light) so figured to change the power point to a different circuit in case it was being overloaded by the VFD and what it was drawing. So i changed the connection to my professionally installed 15amp point, it was the only equipment connected to that circuit. It tripped again, so i checked my wiring, as directed from instructions to see if there was a clear reason the earth leakage tripped.
I then issolated the machine and started to gather information on similar faults and possiable trouble shooting for this type of equipment. Informed the seller of the re-occuring fault.
Had a chat to a sparkie at work, who i showed the VFD to and he looked at the unit and said this is how it should behave. But he was not familiar with this exact model and how it would behave with my spindle.
So to help find the root of the fault i asked the people who own this type of equipment what is the norm.
I wasn't ever going to be plugging the router in to do live tests, it was clear there was a fault or major issue somewhere in the system.
All the advice i have recieved and followed has been a non-live testing and data gathering.
If someone had advised me to just stick some wires onto the winding and do... I would have just choosen to not attempt that type of diagnostics. I'm not that keen to get to the bottom of it.
I just want to know information that i can gather in a safe way to build a case for a warrenty claim.
I'm responsable for my own safety and so if i feel that someones suggestion is unsafe i will just not do it. The sparkie that i have spoken to at work was more than happy to come and look over the installation which i had muted with him when we spoke about the VFD. But first i need to have information that i could answer him and the seller with.
So everyone thank you for you input, for those that were worried that i was going to attempt something that was dangerous thank you for your raising of the dangerous that are inherent when dealing with electricity.
For the most part i was just trying to get to know what the norm was, its not a simple or common device i have purchased. While i have experence with CNC equipment i don't have experence with the behavour traits of VFD power supply or water cooled spindles.