Allen-Bradley 1492 Field Wire Conv. Module Installation Instructions
The Allen-Bradley 1492 Field Wire Conv. Module is a device that allows you to convert analog signals from a Modicon® B877-111, 16-channel, single-ended current or voltage input module to a ControLogix 1756-IF16, analog, 16-channel, single-ended current or voltage input module. It provides the mating connections to the B877-111 swing-arm (terminal block) with attached field wires, routing those signals via its 25-pin, D-shell connector and a pre-wired cable to the compatible terminals of the 1756-IF16.
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Field Wire Conversion Module for Modicon B877-111 to 1756-IF16 in Single-ended Current or Voltage Mode (Cat 1492-CM800-LA002) 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-LA002 conversion module provides field wire signal conversion from a Modicon® B877-111, analog, 16-channel, single-ended current or voltage input module to a ControLogix 1756-IF16, analog, 16-channel, single-ended current or voltage input module. The conversion module provides the mating connections to the B877111 swing-arm (terminal block) with the attached field wires. It routes those signals, via its 25-pin, D-shell connector and a 1492-ACABLEUB or 1492-ACABLEUA pre-wired cable to the compatible terminals of the 1756-IF16 (refer to the Wiring Diagrams on pages 2 and 3). 25pin D-shell connector for 1492-ACABLEUA or –ACABLEUB Mating connector for B800 Terminal Block 1492-CM800-LA002 Conversion Module WARNING 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. II. Module Installation The 1492-CM800-LA002 conversion module must be installed in a 1492 conversion system base-plate and coverplate 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 1492-CM800-LA002 1492-CM800-LA002 Compatible 800 Compatible 1756 Input Module Input Module B877-111 (S-ended V) 1756-IF16 (S-ended V) B877-111 (S-ended C) 1756-IF16 (S-ended C) Required 1492 Cable 1492-ACABLEUA 1492-ACABLEUB 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). 10000021831 (Version 00) Printed in Germany IV. Conversion Module Wiring Diagram The following diagrams show the connections from the existing B877-111 swing-arm, through the conversion module, 1492 cable and to the 1756-IF16 analog input module. The diagrams can be used as an aid in possible system troubleshooting. WARNING There are several key application considerations and system specifications (bottom of drawing) when using these components (conversion module, cable and output module). Read and understand these considerations before installation. Conversion: B877-111 to 1756-IF16 (Single Ended Current) with 1492-CM800-LA002 1492-CM800-LA002 + - Not Used Input 1 Input 2 Not Used Input 3 Input 4 Not Used Input 5 Input 6 Not Used Input 7 Input 8 Not Used Input 9 Input 10 Not Used Input 11 Input 12 Not Used Input 13 Input 14 Not Used Input 15 Input 16 Input 1,2 Return Input 3,4 Return Input 5,6 Return Input 7,8 Return Input 9,10 Return Input 11,12 Return Input 13,14 Return Input 15,16 Return Case Ground Case Ground Not Used Not Used Not Used Not Used Voltage Reference + Voltage Reference - 1756-IF16 1492-ACABLE003UB 2 3 4 6 7 8 10 11 12 14 15 16 22 23 24 26 27 28 30 31 32 34 35 36 5 9 13 17 25 29 33 37 1 40 18 19 20 21 38 39 3 2 1 14 15 16 17 18 4 6 8 10 19 Red Blue 28 12 13 25 24 23 22 20 21 Violet 20 22 24 26 30 32 34 36 1 3 5 7 9 11 13 15 17 19 21 23 25 27 29 31 33 35 Brown Black White White/Black White/Brown White/Red White/Orange Orange 2 4 6 8 12 14 16 18 10 Yellow IN-0 IN-1 IN-2 IN-3 IN-4 IN-5 IN-6 IN-7 RTN Green Gray White/Black/Brown White/Gray White/Violet White/Blue White/Yellow White/Green SH B877-111 Swing Arm RTN IN-8 IN-9 IN-10 IN-11 IN-12 IN-13 IN-14 IN-15 iRTN-0 iRTN-1 iRTN-2 iRTN-3 RTN iRTN-4 iRTN-5 iRTN-6 iRTN-7 iRTN-8 iRTN-9 iRTN-10 iRTN-11 RTN iRTN-12 iRTN-13 iRTN-14 iRTN-15 Conversion Module Installation and Application Considerations The B875-111 indicated differential inputs. When it was configured for single ended inputs, it was referred to as a B877-111. SHIELD GROUNDING: For single ended current analog inputs both the B877-111 and 1756-IF16 recommend grounding the field wiring shield at the analog source/device. As such, no shield ground modifications should be requried. The pre-wired cable used between the 1492-CM800LA002 and the 1756-IF16 [1492-ACABLE003UB] provides a shield ground lug to ground the shield at the 1756 ControlLogix chassis, this must be connected. The B877-111 recommended placing jumpers from UNUSED to USED analog input channels. These jumpers MUST be removed or they will result in improper operation. The B77-111 analog input ranges were configured by DIP switches on the module. The appropriate range for the 1756-IF16 is configured by software. This design assumes that all inputs on the B877-111 were connected to current transmitters. If there was a mix of current and voltage transmitters, then modification of pre-wired cable will need to occur at the 1756-IF16 terminal block. Refer to the 1756-IF16 Installation Manual for modification details. CASE GROUND: If connected, remove this wire from the B877-111 terminal block, as it serves no purpose for the 1756-IF16. Refer to your B877-111 and 1756-IF16 Installation and User Manuals for additional information concerning comparisons of module wiring, features, and configuration details. [Reference Doc: 41170-764 (Version 03)] 10000021831 (Version 00) (2) IV. Conversion Module Wiring Diagram (Continued) WARNING There are several key application considerations and system specifications (bottom of drawing) when using these components (conversion module, cable and output module). Read and understand these considerations before installation. Conversion: B877-111 to 1756-IF16 (Single Ended Voltage) with 1492-CM800-LA002 1492-CM800-LA002 Not Used Input 1 Input 2 Not Used Input 3 Input 4 Not Used Input 5 Input 6 Not Used Input 7 Input 8 Not Used Input 9 Input 10 Not Used Input 11 Input 12 Not Used Input 13 Input 14 Not Used Input 15 Input 16 Input 1,2 Return Input 3,4 Return Input 5,6 Return Input 7,8 Return Input 9,10 Return Input 11,12 Return Input 13,14 Return Input 15,16 Return Case Ground Case Ground Not Used Not Used Not Used Not Used Voltage Reference + Voltage Reference - + - 1756-IF16 1492-ACABLE003UA 2 3 4 6 7 8 10 11 12 14 15 16 22 23 24 26 27 28 30 31 32 34 35 36 5 9 13 17 25 29 33 37 1 40 18 19 20 21 38 39 3 2 1 14 15 16 17 18 4 6 8 10 19 Red 12 13 25 24 23 22 20 21 Violet Brown Black White White/Black White/Brown White/Red White/Orange Orange Yellow Green Blue Gray White/Black/Brown White/Gray White/Violet White/Blue White/Yellow White/Green 2 4 6 8 12 14 16 18 10 9 27 28 20 22 24 26 30 32 34 36 IN-0 IN-1 IN-2 IN-3 IN-4 IN-5 IN-6 IN-7 RTN RTN RTN RTN IN-8 IN-9 IN-10 IN-11 IN-12 IN-13 IN-14 IN-15 SH B877-111 Swing Arm Conversion Module Installation and Application Considerations T1 The B875-111 indicated differential inputs. When it was configured for single ended inputs, it was referred to as a B877-111. SHIELD GROUNDING: For single ended voltage analog inputs both the B877-111 and 1756-IF16 recommend grounding the field wiring shield at the analog source/device. As such, no shield ground modifications should be requried. The pre-wired cable used between the 1492-CM800-LA002 and the 1756-IF16 [1492-ACABLE003UA] provides a shield ground lug to ground the shield at the 1756 ControlLogix chassis, this must be connected. The B877-111 recommended placing jumpers from UNUSED to USED analog input channels. These jumpers can be removed if desired. They are not required on the 1756-IF16, but they will not impact its operation (in voltage mode) if they are left connected. The B77-111 analog input ranges were configured by DIP switches on the module. The appropriate range for the 1756-IF16 is configured by software. This design assumes that all inputs on the B877-111 were connected to voltage transmitters. If there was a mix of current and voltage transmitters, then modification of pre-wired cable will need to occur at the 1756-IF16 terminal block. Refer to the 1756-IF16 Installation Manual for modification details. CASE GROUND: If connected, remove this wire from the B877-111 terminal block, as it serves no purpose for the 1756-IF16. Refer to your B877-111 and 1756-IF16 Installation and User Manuals for additional information concerning comparisons of module wiring, features, and configuration details. [Reference Doc: 41170-785 (Version 03)] 10000021831 (Version 00) (3) V. 1492-CM800-LA002 Conversion Module Specifications (Operating specifications are when installed in the Conversion System base / cover-plate assembly) Specification Dimensions Approximate Shipping Weight Storage Temperature Operating Temperature Operating Humidity Shock Non-operating Operating Operating Vibration Maximum Operating Voltage Max. Module Operating Current Per Point: Per Module: Value 288.9 mm (height) x 139.7 mm (depth) x 44.5 mm (width) 11.37 in. (height) x 5.5 in. (depth) x 1.75 in. (width) 300g (0.66 lbs) (includes carton) -40 to +85°C (-40 to +185°F) 0 to 55°C (32 to 131°F) 5 to 95% at 55°C (non-condensing) 50g 30g 2g @ 10-500Hz 60 Vdc 2 Amps (1492-CABLE connection pins are limited to 2A per pin) 12 Amps NOTICE Refer to the Wiring Diagram(s) for current limits for a specific configuration. Agency Certifications Pollution Degree Environmental Rating UL Classified: Under UL File Number E113724 CSA CE: compliant for all applicable directives 2 IP20 VI. 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. 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. 1 2 3 4 5 6 7 Max. Number 800 Housing 1756 Chassis Max. Number 1756 I/O Chassis Modicon 800 I/O Conversion Assembly of 800 Housing Width Catalog Number of 1756 Chassis Width Housing Cat Number Catalog Number Slots for I/O Dimension Slots for I/O Dimension 1756-A4 3 10.25” 3 10.25” AS-H810-xxx 1492-MUA4-MB3 A7 = 14.49” A7 = 6, A10=9 17.5” 4 AS-H819-103 A10 = 19.02” 1756-A7 A7 = 14.49” 1492-MUA7-A10 or A7 = 6, A10=9 6 17.5” AS-H819-209 MB4679 1756-A10 A10 = 19.02” A7 = 14.49” A7 = 6, A10=9 7 17.5” AS-H819-100 A10 = 19.02” A10 = 19.02” A10 = 9, A13=12 AS-H827-103 8 27.1” A13 = 23.15” A10 = 19.02” 1756-A10 1492-MUA10-A13or A10 = 9, A13=12 27.1” AS-H827-209 10 MB81011 A13 = 23.15” 1756-A13 A10 = 19.02” A10 = 9, A13=12 11 27.1” AS-B827-100 A13 = 23.15” 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. Article No. 4351810000 10000021831 (Version 00) Printed in Germany ">

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Key features
- Signal conversion
- Modicon® B877-111 to ControLogix 1756-IF16
- 16-channel support
- Single-ended current or voltage
- 25-pin D-shell connector
Frequently asked questions
This module converts signals from a Modicon® B877-111 module to a ControLogix 1756-IF16 module.
The module can handle both single-ended current and voltage signals.
It supports 16 channels.
It uses a 25-pin D-shell connector.