----- Original Message ----- From: "John Thornton" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Saturday, August 04, 2007 10:36 AM Subject: Re: [Emc-users] Automation Direct Steppers
> Hi Roger > > What would be the advantage of the Gecko drive? Either drive can supply the required motor current of 2.8A, but the AD drives can only supply that at up to 42V. At the motors rated current, the AD Drives can put a maximum of 117.6 Watts into the motor, the Gecko drive can supply 224Watts to the motor. The Gecko drive with a higher voltage should keep the motors torque up at higher rpm's. Just comparing drive to drive, the AD drive has a maximum output of .197 HP for $150 and the Gecko drive has a maximum output of .75 HP for $134. Almost 4X the power for a little less money, that's why I would go with the Gecko drives over the AD drives. I haven't looked for years, but Superior Electric used to have a motion sizing program called CAMAS. It would let you specify your application and would show you the performance you could expect out of certain Superior Electric motors and drives. You could look at the rpm & torque curves for motor and drive combinations. A higher voltage drive gave better performance out of a certain motor than a lower voltage drive did. I don't think you would do bad either way, and I like Automation Direct myself, but to me it looks like Gecko has the best bang for the buck I've seen in stepper drives. Roger Neal ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
