Rockwell Automation 1492-CM800-LD006 Fused Field Wire Conversion Module for Modicon B820-008 to 1756-OC8 - Manual (Page 8)

10000021873 (Version 00)
Printed in Germany
Article No. 4351890000
VIII. Appendix A - 800 Housing to 1756 Chassis Conversion System Selection Process
1) Determine the number of 800 I/O modules actually used in the 800 I/O Housing to be converted to 1756 I/O .
2) Review the data in Column 5 from the below table, and select a 1756 I/O Chassis which meets your conversion
needs from Step 1. Ensure the information from the I/O Conversion module table is reviewed first since in some
cases, two 1756 modules are needed to replace one 800 I/O module.
3) Once the 1756 Chassis is selected, refer to Column 7 and select the Conversion Assembly.
 One chassis slot required for the ControlLogix processor or a remote I/O adapter type module.
 The footprint and mounting dimensions of the 1492 Conversion Assembly (base-plate and cover-plate) match those of the
Modicon I/O Housing.
 Width dimension includes the 1756 Chassis power supply.
 Surplus Chassis width as compared to the 800 I/O Housing is divided equally when mounting it on the Conversion Assembly.
 Mounting holes for the 1756 I/O Chassis are pre-drilled and pre-tapped into the Conversion Assembly cover-plate.
Modicon is a Registered Trademark of Group Schneider.
AS-H810-xxx
AS-H819-103
AS-H819-209
AS-H819-100
AS-H827-103
AS-H827-209
AS-B827-100
Modicon 800 I/O
Housing Cat Number
1492-MUA4-MB3
1492-MUA7-A10-
MB4679 
1492-MUA10-A13-
MB81011 
Conversion Assembly
Catalog Number 
Max. Number
of 800 Housing
Slots for I/O
3
4
6
7
8
10
11
10.25”
17.5”
17.5”
17.5”
27.1”
27.1”
27.1”
800 Housing
Width
Dimension
10.25”
A7 = 14.49”
A10 = 19.02”
A7 = 14.49”
A10 = 19.02”
A7 = 14.49”
A10 = 19.02”
A10 = 19.02”
A13 = 23.15”
A10 = 19.02”
A13 = 23.15”
A10 = 19.02”
A13 = 23.15”
1756 Chassis
Width 
Dimension
Max. Number
of 1756 Chassis
Slots for I/O
3
A7 = 6, A10=9
A7 = 6, A10=9
A7 = 6, A10=9
A10 = 9, A13=12
A10 = 9, A13=12
A10 = 9, A13=12
1756 I/O Chassis
Catalog Number
1 7 2 3 6 5 4
1756-A4
1756-A7
or
1756-A10
1756-A10
or
1756-A13
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BUL. 592 E1 PLUS O.L. RELAY
APPLICATION AND INSTALLATION
INSTRUCTION SHEET
10000015209 00
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4 4
B
Conversion Module Compatible 800
Output Module
Compatible 1756
Module
Required 1492 Cable
1492-CM800-LD006 B820-008 1756-OB8 1492-CABLEU
1492-CM800-LD006 B820-008 1756-OC8 1492-CABLEU
1492-CM800-LD006 Conversion Module
20-Pin Connector for 1492-CABLEU
Mating Connector for
B800 Terminal Block
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