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Browse Prior Art Database

Conveyor Control Assembly

IP.com Disclosure Number: IPCOM000099899D
Original Publication Date: 1990-Feb-01
Included in the Prior Art Database: 2005-Mar-15
Document File: 3 page(s) / 100K

Publishing Venue

IBM

Related People

Jordan, SR: AUTHOR [+2]

Abstract

This article describes a mechanism which logically interlocks the mechanical motion on a substrate conveyor using solid-state logic.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 53% of the total text.

Conveyor Control Assembly

       This article describes a mechanism which logically
interlocks the mechanical motion on a substrate conveyor using
solid-state logic.

      Fig. 1 is a plan view of the conveyor control assembly of a
substrate tester having six conveyor motors that have their conveyor
motions logically interlocked with other mechanical handling motions
of the tester.  The conveyor motors index the substrate on a belt a
fixed distance through the tester.  The conveyor motor is a permanent
magnet-type DC motor.  The conveyor control assembly is designed to
be mounted in a vertical rack-type enclosure.  The six  conveyor
motors have drives with dynamic braking for responsive stopping.  The
digital inputs to run and disable the conveyor motors are by contact
closures of electromechanical relays.  A digital signal that
indicates the on or off state of the conveyor motor also is put out
from electromechanical relays back into a multifunction logic card.
This allows the interlocking of the conveyor motions with other
mechanical motions of the tester.  The electromechanical relays are
controlled through solid-state relays, which provide optical
isolation between the higher control voltage of the electromechanical
relays and the transistor-to- transistor logic (TTL) level signals
coming from the conveyor indexing feature of the multifunction logic
card.  The running speed of each conveyor motor is manually set by
adjusting a respective potentiometer...