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Author Topic: HUMS, LOCKS UP, NOISY SERVOs and ERRATIC OPERATION - RF NOISE  (Read 2495 times)

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HUMS, LOCKS UP, NOISY SERVOs and ERRATIC OPERATION - RF NOISE
« on: December 15, 2009, 01:10:08 AM »
I THINK I FIXED MINE TODAY.  STEP 1 -- I MOUNTED A CONNECTION BLOCK ISOLATED FROM THE MACHINE FRAME.   I RAN SEPARATE GROUND WIRES TO IT FROM; #1 THE SPINDLE FRAME  #2 Z ASSEMBLY (THE SPINDLE IS ISOLATED FROM A PHYSICAL GROUND BECAUSE OF THE NON CONDUCTIVE RAIL GLIDE PADS). #3 THE BRIDGE. #4 THE FRAME OF THE CNC MACHINE.  STEP 2   I ADDED ANOTHER GROUNDING BLOCK ON THE WALL NEAR THE MACHINE'S POWER OUTLETS.   I CONNECTED THE GROUNDS FROM BOTH 220 VOLT FEEDS AND THE 2 DEDICATED 110 VOLT COMPUTER SUPPLY CIRCUITS. ALL 4 GROUNDS ARE CONNECTED TOGETHER AT THE BLOCK.  THEN I CONNECTED THE MACHINE GROUNDING BLOCK TO THE WALL GROUNDING BLOCK.   NOW ALL OF THE INPUT POWER GROUNDS FOR THE MACHINE ARE TIED TOGEHER ALONG WITH THE NEW ADDED SEPARATE GROUNDS. -- I THINK THE HIGH FREQ. SPINDLE EMITS RF THE BLEEDS INTO CONTROL WIRING AND PLAYS WITH THE ELECTRONICS IN THE CONTROL BOX. GROUNDING AT THE SOURCE OF THE RF ABSORBS / DISSIPATES THIS ENERGY. - I HOPE THIS HELPS YOU
Re: HUMS, LOCKS UP, NOISY SERVOs and ERRATIC OPERATION - RF NOISE
« Reply #1 on: December 15, 2009, 01:14:02 AM »
All you need to do now is to ask Santa for a Return key. :)

Cheers,

Peter.
----------------------------------------------------
Homann Designs
http://www.homanndesigns.com
email: peter at homanndesigns.com

Offline alenz

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Re: HUMS, LOCKS UP, NOISY SERVOs and ERRATIC OPERATION - RF NOISE
« Reply #2 on: December 15, 2009, 02:27:13 AM »
Or perhaps a way to turn off "Caps Lock"? <VBG>

Offline RICH

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Re: HUMS, LOCKS UP, NOISY SERVOs and ERRATIC OPERATION - RF NOISE
« Reply #3 on: December 16, 2009, 05:51:00 AM »
"DON'T YOU GUYS HAVE SOMETHING BETTER TO DO? - GO MAKE SOMETHING, GET A LIFE "   

I take it you didn't like the replies to your posting?
RICH