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Rockwell Automation 1492-CM800-LD012 Field Wire Conv. Module for Modicon B838-032 to Two 1756-OB16E User Manual

Rockwell Automation Equipment

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Field Wire Conversion Module for Modicon B838-032 Module to
Two 1756-OB16E Modules

(Cat 1492-CM800-LD012)

10000021903

(Version 00)

Printed in Germany

Local language (French, Italian, German & Spanish) versions of this document can be downloaded by going to www.ab.com.
In the left margin click on Publications Library and Literature Library. In the Search Area (right margin), Search by Catalog
Number and in the Search box type in the catalog number of the conversion system component.

I. Module Description

The 1492-CM800-LD012 conversion module provides field wire signal conversion from a Modicon® B838-032, 20 to
28Vdc, 32-pt output module to two ControLogix 1756-OB16E, 10 to 31.2Vdc, 16-pt output modules. The conversion
module provides the mating connections to the B838-032 swing-arm (terminal block) with the attached field wires. It
routes those signals, via its two 20-pin connectors and two 1492-CABLEX pre-wired cables to compatible terminals
of two 1756-OB16E modules (refer to the Wiring Diagram on page 2). NOTE: The B838-032 was mechanically fused
per group. The 1756-OB16E is electronically fused per group. Refer to the 1756-OB16E Installation Manual for addi-
tional details on electronic fuse operation.

II. Module Installation

The 1492-CM800-LD012 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

This is the cable length in meters and tenths of meters (e.g. 015 = 1.5 meters). Recommended cable

length is 003 (00.3 meters).

Conversion Module

Compatible 800

Output Module

Compatible 1756

Output Module

Required 1492 Cable

1492-CM800-LD0012

B838-032

Two 1756-OB16E

Two 1492-CABLEX

Two 20-pin connectors (P1 and P2) for two 1492-CABLEX cables

Mating connector for
B800 Terminal Block

1492-CM800-LD012 Conversion Module

De-energize and lockout any and all power to all I/O field devices connected to the Modicon 800 I/O
housing, and the power to the 800 I/O housing 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.

WARNING