Introduction
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Compaq Confidential – Need to Know Required
Writer: Everett Godaire Project: TL891 MiniLibrary System User's Guide Comments:
Part Number: ER-TL891-UA.A01 File Name: b-ch1 Introduction Last Saved On: 3/1/99 4:07 PM
Physical Configuration
The Expansion Unit must be mounted at the top of the stack, which places its
control panel at a convenient height. The control panels of the Base Modules
are of secondary importance, as they serve mainly to help localize system
failures. When installed, the motor drive assembly of the pass-through
mechanism is directly behind the Expansion Unit.
Base modules may be installed anywhere below the Expansion Unit, in any
order. There may be a slight performance advantage in making the Base
Modules contiguous, but gaps are permitted. The size of a gap is limited by the
fact that each gap must be bridged by some number of 7” pass-through
mechanism track sections. For safety, available cover plates should be
installed on all pass-through mechanism sections that are not connected to
MiniLibrary modules.
The Expansion Unit senses the position of each module during initialization at
power-up. Even if there are gaps between modules, the system will operate
correctly. If you plan to leave gaps between modules, be sure to order
additional pass-through mechanism track segments and cover plates equal to
the length of the gap.
System Expansion
A MiniLibrary System may be expanded in capacity and performance by
adding or removing TL891 modules. Associated with the Expansion Unit and
each of the Base Module(s) is a section of the pass-through mechanism.
System firmware integrates all of the robotics of these system modules with
that of the pass-through mechanism into a single high-performance library
robotics system.
