X3 with dead KL6515 power supply

[shanebernard]

Hello all, I have been looking and doing alot of info gathering on this site for quite some time, I have a X3 that i have been using for awhile and have started to cnc I was playing with some new motors and drivers and I think I toasted my power supply. The wire documentation I have for the driver was wrong and I reversed the polarity to it and I did not have a fuse between the driver and power supply. Now when I turn it on it pops the breaker on the AC side. Do you think the whole power supply bad or is there something that I can replace??

[MrWild]

sounds like you miss wired something

[shanebernard]

yes i did lol it sucks but i know what it is the manual for the driver showed what pin the power and power ground were and they are backward in the manual. now i need to figure out if i can fix the power supply or if I need to order a new one.
Thank you, Shane

[jalessi]

Shanebernard,

Have you tried disconnecting all the stepper drives from the power supply and applying power to the supply?

Jeff...

[shanebernard]

Thanks for the reply, yes I did I unplugged everything so it was just the main power coming into the power supply and no outputs to anything and it powers on for about 4 seconds and the pops the breaker. Im almost positive now that it is no good I just dont know if I can take it apart and fix it or not I really dont want to spend another $180. if I dont need to.

[Al_The_Man]

You may have a couple if semi's that are blown, you could try replacing them if you can identify them, they generally are fairly low cost.
The moral to the story is use Linear where possible, more rugged and easier to fix.
Al.

[shanebernard]

For anyone interested these are the motor/drives I was trying to connect. My mom works for IMS and the R&D department gave them to her for me to tryout. I hope nothing happend to my gecko g203v in all this.

http://imshome.com/downloads/manuals/MDM.pdf#page=163
This is the one I used I found the next one after.
page 163 shows the 7pin connector with pin7= ground , pin6= V+

http://imshome.com/downloads/quickre...m23plus_qr.pdf
Page 2 shows the 7 pin connector with pin7= V+ , pin6=ground

Thanks, Shane

[shanebernard]

Thanks for the help, ill take it apart today and try and see anything wrong although i do not have any clue what i will be looking at.
you said to use linear? whats that? Its really my fault nomatter what because I should have had a fuse between the two.

[Al_The_Man]

See the 'Simple One'
http://images.google.ca/images?q=lin...ed=0CCwQsAQwAw
Al.

[SCzEngrgGroup]

The KL6515 *is* a linear supply. I'm assuming it's the high-current motor output of the supply that you've damaged. You have almost certainly blown the bridge rectifier, which will be mounted on the large board with the two large capacitors on it. The bridge rectifier will be either four large diodes (black cylinders with a white band at one end, and two leads each), or an integrated bridge rectifier (black plastic block with four leads, either in a row, or in a square or diamond pattern). In either case, they're easy and inexpensive to replace, as long as the PCB is not damaged. There's no way you damaged the transformer. It's possible, but very unlikely, that the capacitors were damaged. The +5V and +12V outputs should be fine. Anyone with a passing understanding of electronics should be able to easily repair it for you for very little money. The parts are only about $5-10.

Regards,
Ray L.

[shanebernard]

Thanks for the help I unhooked the 65v side and you are correct that the 12v
and 5v outputs are fine so it is just the 65v block that has been damaged I tried going over it with an ohm meter but I dont really see whats wrong the only thing I see that doesnt seem right to me is on the output it seems there is continuity between + and -. I am going to take a look again and see if I can figure it out. Thanks for all the help I really appreciate it.

Shane.

[Al_The_Man]

Your AC side into the bridge should be OK and measure around 45vac if the DC is 65v.
If individual diodes, they can be checked individually for short circuit.
If you did have one shorted however it would either blow the trace open as Ray mentioned or load the transformer up and you would hear it.
With modern high impedance meters, some readings, especially ohms range, can take some interpreting due to the capacitor charge etc.
Al.