VFD Has defantly blown up now!

[charlieuk]

soldering it sounds like a good move I will be sure to do that, did you take the 4 pins out and then modify it so the wires went through the top? along with the earth?

[Clive S]

soldering it sounds like a good move I will be sure to do that, did you take the 4 pins out and then modify it so the wires went through the top? along with the earth?

It is a common mistake not to securely fix the cable to the VFD plate so that there is no strain on the plug, If you take the cap off be careful as the water inlet and outlet might need to be resealed.

[routercnc]

Have a look here:

http://www.mycncuk.com/threads/7545-VFD-error/page3

[Boyan Silyavski]

Could it be that it shorted inside? Measure the coil's resistance. It may be water damaged? Then open, clean , dry and thats it

[Clive S]

Could it be that it shorted inside? Measure the coil's resistance. It may be water damaged? Then open, clean , dry and thats it

I very much doubt it

[Boyan Silyavski]

I very much doubt it

You may doubt it as much as you like, but once when i was cleaning my spindle by mistake i used compressed air and that's what happened. So i had to open, dry , close again and it worked. i have seen on forums some people that have a leak and when closed the leak, then all was fine. It takes a minute to measure if its shorted to body.

[charlieuk]

New spindle and vfd arrived from cnc4u and I have replaced them wire for wire. Are there any tests I can do to make sure all is ok before I do any damage? We think the fault was at the plug so I have soldered the wires this time as suggested. I did not set up my original and I'm terable at reading (dislexia) and I'm just trying to establish if there is anything that I need to program on it. The new one has a little dial for sped I asume however the old one was set up for the speed to adjust on Mach 3? I'm terafied of turning it on and it going bang again!

[Doddy]

soldering it sounds like a good move I will be sure to do that, did you take the 4 pins out and then modify it so the wires went through the top? along with the earth?

I genuinely interested and a little confused... how was the original connector made-off last time, if not soldered?

Okay, the connector pictured is a little different to the usual chinese jobs that have solder bucket terminals.

Where I'm coming from is that soldering isn't regarded as a particularly vibration-tolerant electrical termination method (crimping is widely regarded as superior). Unless the OP had, perhaps, screw-terminals?

[Clive S]

I genuinely interested and a little confused... how was the original connector made-off last time, if not soldered?

Okay, the connector pictured is a little different to the usual chinese jobs that have solder bucket terminals.

Where I'm coming from is that soldering isn't regarded as a particularly vibration-tolerant electrical termination method (crimping is widely regarded as superior). Unless the OP had, perhaps, screw-terminals?

Doddy If you are looking at the green connector then I think that is just a 3D printed cover to cover the hole up in the top of the spindle. The original plug and socket have been discarded and the cy cable soldered directly on to the spindle wires.

My personal opinion is that I would not do this but keep the original plug and socket BUT securely fix the cable to the spindle plate so as there can be no movement in the plug and socket as this is a source of problems with vfd's letting magic smoke out.

[Doddy]

Doddy If you are looking at the green connector then I think that is just a 3D printed cover to cover the hole up in the top of the spindle. The original plug and socket have been discarded and the cy cable soldered directly on to the spindle wires.

My personal opinion is that I would not do this but keep the original plug and socket BUT securely fix the cable to the spindle plate so as there can be no movement in the plug and socket as this is a source of problems with vfd's letting magic smoke out.

I was looking at the picture on page 1, but now having seen your reply I've noticed the second image. Not keen - I'd be concerned that such thin-walled printed structure certainly will be porous and provide little to no mechanical relief. I'd agree with Clive's suggestion - get some saddle clips (or similar rigid mount) on the plate and tie-wrap the cable-form to these. It works on fast-jets, should be fine on a milling machine.