I picked this up from the Gecko group. We will have a problem with the
power cables to the motors and must take some preventive action. Here's the
answer:
> I just found out today that whenever I have my Bridgeport with 201
> drivers turned on all AM radios in the building next door have a squeal
> that is so loud that no one can listen to them . OOOPS ! Talk about
> being a bad neighbor !
> I tried a jumper lead from the machine body to the metal box that the
> drivers are in and it helped a good bit .
> Any good ideas for RFI .
Here's what will 'take you off of the air':
1) Run your motor leads thru a 5-conductor shielded cable. 4 leads are
for the motor connections, the 5th conductor goes to the motor case,
the other end goes to the drive's power supply GND (term 1).
Ground the shields to your control box 'single-point' ground location
(usually the '-' terminal of your big filter cap). Leave the motor end
of the shield unconnected.
2) Use an AC line filter (Corcomp or similar) on the 115 VAC going into
your control box transformer.
It'll then be as quiet as a baby. No, wait; that's not a good analogy...
The Gecko Yahoo group focuses on the Gecko CNC controller/driver system.
You can get more information about them here:
http://www.geckodrive.com/products.htbmland here:
http://finance.groups.yahoo.com/group/geckodrive/Just remember to say I sent you so that I can collect my regular 50% cut on
all future sales.
Robert
:D
Be sure to visit the group home and check for new Links, Files, and Photos:
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