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

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-CABLEX 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