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???
11/14/06 11:28
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Msg Score: +1
 +1 Informative		 #127946 - Sounds like an earthing problem
Responding to: ???'s previous message
Kiran,

If you only connect one variable speed drive, play around with the different possibilities of the RS485 shield to earth or to ground.

Is the cable from the VSD to the motor shielded? And properly earthed?

Is there any change when you remove the 100R resistor (in many cases this is not necessary of the data rate is low and/or the cable length is short).



List of 28 messages in thread
TopicAuthorDate
Requesting your suggestions on RS485            01/01/70 00:00      
   Sounds like an earthing problem            01/01/70 00:00      
      Sounds like an earthing problem >> Russell            01/01/70 00:00      
   Are the devices plugged in in an outlet with groun            01/01/70 00:00      
      Are the devices plugged >> Erik            01/01/70 00:00      
         motor noise            01/01/70 00:00      
   Some points            01/01/70 00:00      
       Some points >> Kai Klaas            01/01/70 00:00      
         DO, DO NOT            01/01/70 00:00      
            STP?            01/01/70 00:00      
               Better mounting close to the motor?            01/01/70 00:00      
                  Better close to the motor!            01/01/70 00:00      
               none, so do I            01/01/70 00:00      
               one final thought            01/01/70 00:00      
                  Nice methode!            01/01/70 00:00      
                     Mr. Ferrite lives here :)            01/01/70 00:00      
                        He is a SOFTY, I hope...            01/01/70 00:00      
                           not so soft - here are the hard facts            01/01/70 00:00      
                              Interesting, thanks!            01/01/70 00:00      
                                 closer to home            01/01/70 00:00      
                                    So you have to comply with CE standards...            01/01/70 00:00      
                                       totally diffrent technology            01/01/70 00:00      
         Cat5-cable            01/01/70 00:00      
         More details about used AC drives?            01/01/70 00:00      
   Thank you all members            01/01/70 00:00      
      Good luck!            01/01/70 00:00      
   Reporting From Site..Day1            01/01/70 00:00      
      against all my principles            01/01/70 00:00      

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