Allen-Bradley 1492-CM1771-LD007 Manual

Field Wire Conversion for two A-B 1771-IA, -IA2 to one 1756-IA16
(Cat 1492-CM1771-LD007)
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I. Module Description
NOTICE: To maximize all 16 input points of the 1756-IA16 the 1492-CXE pre-wired cable used with the
1492-CM1771-LD007 conversion module was designed/manufactured with mating connectors for two 1771-IA, -IA2
(two 1492-CM1771-LD007 conversion modules). The 1492-CXE cable provides the TWO conversion modules
into ONE 1756-IA16 function. The two cables from the conversion modules to the 1756 input modules can each be
of a different length. Refer to footnote 2 and 3 below for available lengths.
The 1492-CM1771-LD007 conversion module provides field wire signal conversion from the A-B 1771-IA -IA2, 87
to 138Vac or 97 to 138Vdc, 8 point input module to the 1756-IA16, 74 to 132Vac, 16 point input module.
The conversion module provides the mating connector to the 1771-IA, -IA2 module swing-arm/terminal block with
the attached field wires. It routes those signals via its 25-pin connector and a 1492-CXE pre-wired cable to
compatible terminals on the 1756-IA16. (refer to the Wiring Diagram on page 2 for details).
WARNING
Refer to conversion module Specifications Section: Maximum Operating Voltage

II. Module Installation
The 1492-CM1771-LD007 conversion module must be installed in a 1492 conversion base-plate and cover-plate
assembly. The installation of the module into the assembly is explained in the Installation Manual that ships with the
conversion assembly. For a list of compatible assemblies refer to Appendix A.
III. Conversion Module Compatibility Matrix
Conversion Module
Two
1492-CM1771-LD007

This is cable length in meters. Available lengths are limited to 005 (0.5m) and 010 (1.0m).

This is cable length in meters. Available lengths are limited to 005 (0.5m) and 010 (1.0m).
PN-40380
DIR 10000045376 (Version 00)
Printed in U.S.A.
1492-CM1771-LD007 Conversion Module
De-energize and lockout any and all power to all I/O field devices connected to the A-B 1771 I/O
chassis, and the power to the 1771 I/O chassis itself. Ensure all power is de-energized and locked out to
any device in the control cabinet where the conversion is to be performed. Ensure work is performed by
qualified personnel.
Compatible 1771
Input Module
Two
1771-IA, -IA2
Compatible 1756
Input Module
One
1756-IA16
Required 1492 Cable
One
1492-C  XE