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System planning, System assembly – Rockwell Automation 1769-HSC Compact High Speed Counter Module User Manual

Page 8

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8 Compact I/O High-speed Counter Module

Publication 1769-IN030B-EN-P - October 2010

System Planning

There are several factors to consider when planning your system:

A 1769-ECR (right-end cap) or 1769-ECL (left-end cap) is required to terminate the
end of the Compact I/O bus.

Each bank of Compact I/O modules must have its own power supply.
(A MicroLogix 1500 base unit acts as the power supply for modules directly connected
to it.)

The module has a distance rating of four, therefore the module must be within four
modules of the I/O bank’s power supply.

A Compact I/O power supply, or MicroLogix 1500 base unit, has limits in the amount
of 5V DC and 24V DC current that it can supply to modules in its I/O bank. These
limits depend on the catalog number (for example, 1769-PA2) of the supply. A bank of
modules must not exceed the current limits of the I/O bank power supply or
MicroLogix 1500 base unit.

Refer to these publications for more information:

Compact I/O Expansion Power Supplies Installation Instructions,
publication

1769-IN028

MicroLogix 1500 Programmable Controllers User Manual,
publication

1764-UM001

System Assembly

The module can be attached to an adjacent controller, power supply, or I/O module.

For mounting instructions, see ‘Panel Mounting’ on

page 10

, or ‘DIN Rail Mounting’

on

page 12

.

See ‘Replacing a Single Module within a System’ on

page 12

to work with a system that is

already mounted.