Subject: SFD 230 POWER UP

Date: Wed, 7 Aug 2002 11:15:33 -0500

From: "Berg, Allen" <Allen.Berg@mts.com>

To: "Larson, Rod" <Rod.Larson@mts.com>, "Bushey, John"

     <John.Bushey@mts.com>

CC: "Berkner, Pat" <Pat.Berkner@mts.com>



Rod,

The SFD 230 needs to see the leading edge of the enable signal AFTER the

drive becomes ready.

It takes 1-2 seconds after the logic supply is applied for the drive to

be ready.

The Ready LED is the top green LED on the drive, so you can see this.

After that, the enable signal should be applied so it sees the leading

edge.

If the enable is applied too soon, then the leading edge will not be

seen and it will wait forever in a disabled state.

This is a safety feature so the drive won't enable on its own after a

power loss if the enable remains on.



Hope this helps.



Regards,

Allen Berg



Allen Berg

Applications Engineer

MTS Systems Corporation

Automation Division

Phone  (507) 354-1616

Fax  (507) 354-1611

