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Old March 7th, 2018, 01:40 AM   #1
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ganutenator is offline
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Location: akron, ohio
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still can't find the right vfd

the ATV 312 worked perfectly. sans programming software and manual
their 320 replacement doesn't. can't follow a 1.27 sec decl ramp.
customer is against ABB and AC Tech.
Any suggestions?
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Old March 7th, 2018, 10:12 AM   #2
James Mcquade
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From your post, I gather that the ATV312, software and cables worked.
you now have an ATV320 replacement.
Can you manually program it and does it work?
is there a new software version and software drivers?
different interface cables?

have you tried installing the software on another pc?

just making suggestions based on experience and hope this helps.
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Old March 7th, 2018, 10:17 AM   #3
Steve Bailey
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If the only issue the deceleration rate, does the drive allow connecting an external braking resistor to get a faster decel?
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Old March 7th, 2018, 10:24 AM   #4
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damica1 is offline
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Do you have this manual?
David M. Camp
Automation Engineer
Marshall Electric /


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