Rockwell-automation 4100 ALEC AXIS LINK ENCODER CONVERTER Manual de usuario descargar pdf (Pagina 15)

7 Publication 4100-5.3 - June 1999

Chapter

Overview

ALEC Description

The ALEC is a single-axis AxisLink Encoder Converter which interfaces

a single incremental encoder to Allen-Bradley IMC S Class motion

controllers via AxisLink. As such, it provides a master encoder input

for IMC S Class motion controllers or 1394 GMC systems without the

need to sacrifice a full servo axis for use as a master encoder input.

The ALEC also allows easy remote location of the master encoder for

connection to an existing machine.

AxisLink is an IMC S Class option which links multiple motion

controllers and ALECs to provide real-time axis coordination between

their axes in distributed multi-axis systems. The ALEC encoder

appears to the AxisLinked IMC S Class motion controllers as a virtual

axis. This virtual axis can be used by the motion controllers as a

master axis in electronic gearing, cam, lineshaft, and synchronization

applications.

ALEC Features

The ALEC has the following features:

• Plug and Play - no software setup required.

• Single 18-36V DC power input with reverse voltage protection

makes installation and hookup easy.

• Isolation of all external connections from the microprocessor

logic for reliable performance.

• 4MHz maximum feedback count rate allows high speed

operation without sacrificing resolution.

• Optically isolated high-speed position registration input for

position synchronization and registration applications.

• Interfaces directly to Allen-Bradley 1394 GMC System and

S Class Compact motion controllers.

• Normally Open status output.

• Bicolor LED status indication.

• Pre-engineered encoder cable assemblies available.

• A rugged steel case for greater protection. The case has

pre-drilled mounting tabs.

The ALEC is based on an 80C31 microprocessor running at 16MHz. A

CPU watchdog circuit with front panel LED indicator (CPU OK) is

provided for fault indication and connection to a Normally Open Fault

Relay.

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Rockwell-automation 4100 ALEC AXIS LINK ENCODER CONVERTER Manual de usuario Pagina 15