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I am doing a mach3 retrofit on a ycm40 .
I bought the viper 200 drives in Dec. 2016
But just got to the point of installing the electronics
A few weeks ago. It has SEM servos with
US digital encoders. I have had all three axis
Working. I have been working on the spindle
For a few days and when I went to move the Y
Axis tonight it will only move and hold in one direction.
Any ideas on what could cause this?
It's been working fine could I have damaged
The drive somehow?
Thanks Jim
It might be a wire that's come loose. Check all the connections.
sounds as tho the Dir line is not connected, or not assigned.
Cheers
Roger
It had been working fine the drive needed some fine tuning.
In viper tune I am getting steps in both directions
And the encoder is reading.
Well I found one leg of the upper right resistor not attached
To the board. It looks like it may have been hot
Where it attached to the board. I removed the board from the heat sink
To see the components on the back and nothing look
Burned or had that magic smoke smell. I soldered
The resistor back and no change.
That's the current-sensing resistor.
Sad to say, I think you need a new board. Cooked semiconductor somewhere.
Cheers
Roger
If its only holding in one direction , its a mosfet or a mosfet driver.
Just send it back and i will repair it for $25-35. Thats not a current sensing resistor. Thats the incoming voltage regulator ... designed to burn and save the reg and pcb from blowing.
If you want to try to replace the 2 IR2104's that may be the problem.
Send me an email ... [email protected]
Larry K
At the risk of repeating myself - that's the difference between Chinese and American vendors.
Cheers
Roger
< At the risk of repeating myself - that's the difference between Chinese and American vendors.>
Seriously , lol ? China has designed nothing.. they just copy and pirate other countries designs. Then their communist government subsides the manufacturing and also the shipping.
They are doing their best to put the rest of the world out of manufacturing jobs with their insanely low prices that don't add up..
( Im not sure why your bringing this up here btw ? )
Larry
Hi Larry
I think you may have misunderstood what I was saying.
A repeated problem mentioned by many readers here is that they get zero support from the Chinese vendors when their 'cheap' stuff does not work as advertised, especially eBay vendors of course. On the other hand, you have just offered very good support, and we know that Gecko stands by their gear as well. This support fully justifies the slightly higher prices of your American goods, but sometimes it is hard getting that through some thick skulls.
You Get What You Pay For.
Cheers
Roger
Sorry Roger ! ( i read ... Whats the difference between Chinese and American vendors ? ... not.. Thats the difference ,lol )
I actually don't come here that often as i do most tech support by email.
But i will be coming more because im starting advertising here again.
Larry K