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Rockwell Automation 1492-CM800-LD011 Field Wire Conv. Module for Modicon B838-032 to 1756-OB32 User Manual

Rockwell Automation Equipment

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Fused Field Wire Conversion Module for Modicon B838-032 to 1756-OB32
(Cat 1492-CM800-LD011)

10000021898

(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-LD011 conversion module provides field wire signal conversion from a Modicon® B838-032, 20 to
28Vdc, 32-pt output module to a ControLogix 1756-OB32, 10 to 31.2Vdc, 32-pt output module. 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 40-pin connector and a 1492-CABLEZ pre-wired cable to compatible terminals of the
1756-OB32. To maintain the functionality of the B838-032 output module the conversion module provides a mechani-
cal fuse for each of the two power supplies (DC-0+ and DC-1+) on the 1756-OB32 (refer to the Wiring Diagram on
page 2).

II. Module Installation

The 1492-CM800-LD011 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).

40-Pin Connector for 1492-CABLEZ

Mating Connector for
B800 Terminal Block

Conversion Module

Compatible 800

Output Module

Compatible 1756

Output Module

Required 1492 Cable

1492-CM800-LD011

B838-032

1756-OB32

1492-CABLEZ

1492-CM800-LD011 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