Allen-Bradley 1492 Field Conversion Module Installation Instructions
Allen-Bradley 1492 Field Conversion Module allows you to convert two 1771, 8-point I/O modules to a single 1756, 16-point I/O module. It simplifies your system by reducing the number of I/O modules and freeing up valuable space in your control cabinet. The conversion occurs without removing field wires, allowing for easy integration with existing wiring. Choose from a range of compatible 1771 and 1756 I/O modules based on your application needs, with options for different voltage ranges and I/O types.
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Digital I/O Conversion Module (Cat 1492-CM1771-LD007) I. Description This Digital I/O Conversion system provides for the conversion of (2) 1771, 8 point I/O modules to be converted to (1) 1756, 16 point I/O module and consists of the following: (2) 1771 Modules (8pt) to (1) 1756 Module (16pt) (2) Conversion Modules: 1492-CM1771-LD007 (1) Cable: 1492-C005C005X_ (Table 2) (1) Conversion Mounting Assembly: 1492-MUA… (Table 1) This conversion is accomplished without the removal of any field wires from the existing 1771 Swing Arms. The existing 1771 Swing Arms fit directly onto the edge connectors of the 1492 Conversion Modules. On one end of the 1492 Cable are (2) connectors, one for each of the (2) Conversion Modules. On the other end is the Removable Terminal Block (RTB) for the 1756 I/O module, as shown in the photo below. The I/O signals are routed through the 1492 Conversion Modules and the 1492 Cable to the appropriate terminals on the 1756 I/O module per the Wiring Diagrams in Section V. As standard, both portions of the 1492 Cables are 0.5M long, but we also offer a 1.0M cable length. Refer to the footnotes in Table 2, Section III for further details. Conversion Compatibility and Product I.D. Label 25-Pin Connector for cable 1492-C005005X_ 1492-CM1771-LD007 Conversion Module WARNING PN-114279 DIR 10000060090 (Version 01) Publication 1492-IN037B-EN-E Printed in U.S.A. De-energize and lockout any and all power to all I/O field devices connected to the A-B 1771 I/O chassis, and the power to the 1771 I/O chassis 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 II. Installation The 1492 Conversion Modules must be installed in a 1492 Conversion Mounting Assembly (see Table 1 below). A complete System Installation Manual ships with the 1492 Conversion Mounting Assembly. 1) Determine the quantity of each type of 1771 I/O modules used in the 1771 I/O Chassis to be converted. 2) Select the applicable 1492 Conversion Modules from Table 2, Section III. 3) Review the Max Slots for I/O and Chassis Width data from the Table 1 below. 4) Select a 1756 I/O Chassis which has enough I/O Slots. NOTE: (2) I/O slots are required in the 1756 Chassis for conversions where (1) 1771 I/O module converts to (2) 1756 I/O modules. 5) Select the 1492 Conversion Mounting Assembly which has enough Conversion Module slots. NOTE: (2) Conversion Module slots are required in the 1492 Conversion Mounting Assembly for conversions where (2) 1771 I/O module convert to (1) 1756 I/O modules. NOTE: The 1492 Conversion Mounting Assembly has the same Height & Width foot-print as the 1771 Chassis and is designed to use the same mounting hardware. The combined Depth of the 1492 Conversion Mounting Assembly with the 1756 Chassis mounted on top is 10.25 inches (Controller w/key) or 10.0 inches (Controller w/o key). Dimension drawings are included in the System Installation Manual that ships with the 1492 Conversion Mounting Assembly. Table 1: Bulletin 1771 to 1756 Chassis Conversion 1771 Chassis Cat. No. Max Slots for I/O 1771-A1B 1771-A2B 1756 Chassis Chassis Width without Power Supply with Power Supply 4 9.01 12.61 8 14.01 17.61 Conversion Mounting Assembly Cat. No. Max Slots for I/O Chassis Width 1756-A4 3 10.35 1756-A7 6 14.49 1756-A7 1756-A10 6 9 Cat. No. Max Slots for Conversion Modules Chassis Width 1492-MUA1B-A4-A7 4 9.01 14.49 19.02 1492-MUA2B-A7-A10 8 14.01 1771-A3B1 12 19.01 1756-A10 1756-A13 9 12 19.02 23.15 1492-MUA3-A10-A13 12 19.01 1771-A4B 16 24.01 1756-A13 1756-A17 12 16 23.15 29.06 1492-MUA4-A13-A17 16 24.01 Foot Notes: 1771-A3B is not listed as it is used for 19 inch wide instrumentation panels. Notice that the 1756 Chassis Width sometimes exceeds the 1771 Chassis Width, with or without the Power Supply. The Cover-Plate of the 1492 Conversion Mounting Assembly allows the 1756 Chassis to be Left justified, Right justified or Centered. A complete System Installation Manual ships with the 1492 Conversion Mounting Assembly. PN-114279 DIR 10000060090 (Version 01) Publication 1492-IN037B-EN-E (2) III. Compatibility Table 2: Bulletin 1771 to 1756 Conversion Modules and Cables 1756 Digital I/O Module 1771 Digital I/O Module 1492 Conversion Module 1492 Cable 1771-IA (Qty 2) 1771-IA2 (Qty 2) 1771-IB (Qty 2) 1771-IC (Qty 2) 1771-IH (Qty 2) 1771-IM (Qty 2) 1771-IN (Qty 2) 1771-IQ (Qty2) 1756-IA16 1756-IA16 1756-IB16 1756-IC16 1756-IC16 1756-IM16I 1756-IN16 1756-IB16I 1492-CM1771-LD007 (Qty 2) 1492-CM1771-LD007 (Qty 2) 1492-CM1771-LD007 (Qty 2) 1492-CM1771-LD007 (Qty 2) 1492-CM1771-LD007 (Qty 2) 1492-CM1771-LD007 (Qty 2) 1492-CM1771-LD007 (Qty 2) 1492-CM1771-LD007 (Qty 2) 1492-C005005XE 1492-C005005XE 1492-C005005XE 1492-C005005XE 1492-C005005XE 1492-C005005XH 1492-C005005XE 1492-C005005XK (SINK) 1771-IT (Qty 2) 1756-IB16 1492-CM1771-LD007 (Qty 2) 1492-C005005XE Foot Notes: To understand any issues concerning I/O module compatibility, refer to the Installation Manuals for the specific 1771 and 1756 I/O modules involved. These 1492 cables consist of 2 separate cables (cable “A” and cable “B”) wired to (1) 1756 RTB. The 6 numbers indicate the cable length of each portion of the 1492 Cable. Recommended cable lengths of 0.5M / 0.5M are shown. Additional cable lengths are as follows: 1.0M / 1.0M = 1492-C010010XE, 1492-C010010XH, 1492-C010010XK 0.5M / 1.0M = 1492-C005010XE, 1492-C005010XH, 1492-C005010XK 1.0M / 0.5M = 1492-C010005XE, 1492-C010005XH, 1492-C010005XK IV. Conversion Module Specifications (Operating specifications are when installed in the Conversion System base / cover-plate assembly) Specification Value Dimensions 11.81 in. (height) x 4.38 in. (depth) x 1.5 in. (width) 300 mm. (height) x 111.25 mm (depth) x 38.1 mm (width) Approximate Shipping Weight 235.6 g (0.52 lbs) ( includes carton) -40 to +85°C (-40 to +185°F) 0 to 60°C (32 to 140°F) 5 to 95% at 60°C (non-condensing) Storage Temperature Operating Temperature Operating Humidity Shock Non operating Operating Operating Vibration Maximum Operating Voltage Max. Module Operating Current Per Point: Per Module: 50g 30g 2g at 10 to 500Hz (Agrees with 1756 I/O module specifications) 132 Vac at 47 to 63Hz 2 Amps 2 Amps NOTICE Agency Certifications Refer to the Wiring Diagram(s) for current limits for a specific configuraUL Classified: Under UL File Number E113724 CSA CE: compliant for all applicable directives Pollution Degree 2 Environmental Rating IP20 PN-114279 DIR 10000060090 (Version 01) Publication 1492-IN037B-EN-E (3) V. Wiring Diagrams Conversion: 1771-IA (2), -IA2 (2) to 1756-IC16 (1) There are several key application considerations and system specifications (bottom of drawing) when using these components (conversion module, cable and input module). Read and understand these considerations before installation. WARNING Conversion Module 1492-CM1771-LD007 L1 L2 Not used Input 0 Input 1 Input 2 Input 3 Input 4 Input 5 Input 6 Input 7 L2 A 0 1 2 3 4 5 6 7 B 1771-WA Swing Arm From 1771-IA , -IA2 Cable 1492-C005005XE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Black 1756-IA16 CABLE “A” 10 9 1 2 3 4 5 6 7 8 CABLE “B” 11 12 13 14 15 16 17 18 20 19 White Red Green Orange Blue White/Black Red/Black Green/Black Orange/Black L2-0 L2-0 IN-0 IN-1 IN-2 IN-3 IN-4 IN-5 IN-6 IN-7 IN-8 IN-9 IN-10 IN-11 IN-12 IN-13 IN-14 IN-15 L2-1 L2-1 Conversion Module 1492-CM1771-LD007 L1 L2 Not used Input 8 Input 9 Input 10 Input 11 Input 12 Input 13 Input 14 Input 15 L2 A 0 1 2 3 4 5 6 7 B 1771-WA Swing Arm From 1771-IA , -IA2 1 Black 2 White 3 Red 4 Green 5 Orange 6 Blue 7 White/Black 8 Red/Black 9 Green/Black 10 Orange/Black 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Conversion Module Installation and Application Considerations This Bul. 1492 cable consists of 2 separate cables (cable “A” and cable “B”) wired to one 1756-IA16 RTB. Recommended cable lengths of 0.5 M / 0.5 M are shown. See table 2 for other lengths. The input delay times for the 1771-IA, -IA2 module versus the 1756-IA16 module are as follows: a) Off-to-On Delay b) On-to-Off Delay 1771-IA, -IA2 24ms (+/-10ms) 24ms (+/-10ms) 1756-IA16 w/ 1492-C005005XE 10ms max (plus selectable filter) 8ms max (plus selectable filter) The 1771-IA, -IA2 module is rated 87V to 138V AC and 97V to 138V DC. The 1756-IA16 module is rated 79V to 132V AC only. Refer to your 1771-IA, -IA2 and 1756-IA16 Installation Manual wiring schematics and diagrams for more details. [Reference Doc: 41170-952 (Version 02)] PN-114279 DIR 10000060090 (Version 01) Publication 1492-IN037B-EN-E (4) V. Wiring Diagrams (Cont’d) Conversion: 1771-IB (2) to 1756-IB16 (1) There are several key application considerations and system specifications (bottom of drawing) when using these components (conversion module, cable and input module). Read and understand these considerations before installation. WARNING Conversion Module 1492-CM1771-LD007 + - Not used Input 0 Input 1 Input 2 Input 3 Input 4 Input 5 Input 6 Input 7 GND-1 A 0 1 2 3 4 5 6 7 B 1771-WA Swing Arm From 1771-IB 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Cable 1492-C005005XE 1756-IB16 10 9 1 2 3 4 5 6 7 8 Black White Red Green Orange Blue White/Black Red/Black Green/Black Orange/Black CABLE “A” CABLE “B” 11 12 13 14 15 16 17 18 20 19 GND-0 GND-0 IN-0 IN-1 IN-2 IN-3 IN-4 IN-5 IN-6 IN-7 IN-8 IN-9 IN-10 IN-11 IN-12 IN-13 IN-14 IN-15 GND-1 GND-1 Conversion Module 1492-CM1771-LD007 + - Not used Input 0 Input 1 Input 2 Input 3 Input 4 Input 5 Input 6 Input 7 GND-1 1771-WA Swing Arm From 1771-IB A 0 1 2 3 4 5 6 7 B 1 Black 2 White 3 Red 4 Green 5 Orange 6 Blue 7 White/Black 8 Red/Black 9 Green/Black 10 Orange/Black 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Conversion Module Installation and Application Considerations This Bul. 1492 cable consists of 2 separate cables (cable “A” and cable “B”) wired to one 1756-IB16 RTB. Recommended cable lengths of 0.5 M / 0.5 M are shown. See table 2 for other lengths. The input delay times for the 1771-IB module versus the 1756-IB16 module are as follows: 1771-IB 1756-IB16 w/ 1492-C005005XE a) Off-to-On Delay 24ms (+/-10ms) 1ms max (plus selectable filter) b) On-to-Off Delay 24ms (+/-10ms) 2ms max (plus selectable filter) The 1771-IB module is rated 24V DC. The 1756-IB16 module is rated 10 - 31V DC only. Refer to your 1771-IB and 1756-IB16 Installation Manual wiring schematics and diagrams for more details. [Reference Doc: 41170-995 (Version 00)] PN-114279 DIR 10000060090 (Version 01) Publication 1492-IN037B-EN-E (5) V. Wiring Diagrams (Cont’d) Conversion: 1771-IC (2) to 1756-IC16 (1) There are several key application considerations and system specifications (bottom of drawing) when using these components (conversion module, cable and input module). Read and understand these considerations before installation. WARNING Conversion Module 1492-CM1771-LD007 + - Not used Input 0 Input 1 Input 2 Input 3 Input 4 Input 5 Input 6 Input 7 GND-1 A 0 1 2 3 4 5 6 7 B 1771-WA Swing Arm From 1771-IC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Cable 1492-C005005XE 1756-IC16 10 9 1 2 3 4 5 6 7 8 Black White Red Green Orange Blue White/Black Red/Black Green/Black Orange/Black CABLE “A” CABLE “B” 11 12 13 14 15 16 17 18 20 19 GND-0 GND-0 IN-0 IN-1 IN-2 IN-3 IN-4 IN-5 IN-6 IN-7 IN-8 IN-9 IN-10 IN-11 IN-12 IN-13 IN-14 IN-15 GND-1 GND-1 Conversion Module 1492-CM1771-LD007 + - Not used Input 0 Input 1 Input 2 Input 3 Input 4 Input 5 Input 6 Input 7 GND-1 A 0 1 2 3 4 5 6 7 B 1771-WA Swing Arm From 1771-IC 1 Black 2 White 3 Red 4 Green 5 Orange 6 Blue 7 White/Black 8 Red/Black 9 Green/Black 10 Orange/Black 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Conversion Module Installation and Application Considerations This Bul. 1492 cable consists of 2 separate cables (cable “A” and cable “B”) wired to one 1756-IC16 RTB. Recommended cable lengths of 0.5 M / 0.5 M are shown. See table 2 for other lengths. The input delay times for the 1771-IC module versus the 1756-IC16 module are as follows: a) Off-to-On Delay b) On-to-Off Delay 1771-IC 12ms (+/-7ms) 20ms (+/-7ms) 1756-IC16 w/ 1492-C005005XE 1ms max (plus selectable filter) 4ms max (plus selectable filter) The 1771-IC module is rated 42 to 56V DC. The 1756-IC16 module is rated 42 to 56V DC only. Refer to your 1771-IC and 1756-IC16 Installation Manual wiring schematics and diagrams for more details. [Reference Doc: 41170-996 (Version 00)] PN-114279 DIR 10000060090 (Version 01) Publication 1492-IN037B-EN-E (6) V. Wiring Diagrams (Cont’d) Conversion: 1771-IH (2) to 1756-IC16 (1) There are several key application considerations and system specifications (bottom of drawing) when using these components (conversion module, cable and input module). Read and understand these considerations before installation. WARNING Conversion Module 1492-CM1771-LD007 + - Not used Input 0 Input 1 Input 2 Input 3 Input 4 Input 5 Input 6 Input 7 GND-0 A 0 1 2 3 4 5 6 7 B 1771-WA Swing Arm From 1771-IH Cable 1492-C005005XE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 1756-IC16 10 9 1 2 3 4 5 6 7 8 Black White Red Green Orange Blue White/Black Red/Black Green/Black Orange/Black CABLE “A” CABLE “B” 11 12 13 14 15 16 17 18 20 19 GND-0 GND-0 IN-0 IN-1 IN-2 IN-3 IN-4 IN-5 IN-6 IN-7 IN-8 IN-9 IN-10 IN-11 IN-12 IN-13 IN-14 IN-15 GND-1 GND-1 Conversion Module 1492-CM1771-LD007 + - Not used Input 0 Input 1 Input 2 Input 3 Input 4 Input 5 Input 6 Input 7 GND-1 1771-WA Swing Arm From 1771-IH A 0 1 2 3 4 5 6 7 B 1 Black 2 White 3 Red 4 Green 5 Orange 6 Blue 7 White/Black 8 Red/Black 9 Green/Black 10 Orange/Black 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Conversion Module Installation and Application Considerations This Bul. 1492 cable consists of 2 separate cables (cable “A” and cable “B”) wired to one 1756-IC16 RTB. Recommended cable lengths of 0.5 M / 0.5 M are shown. See table 2 for other lengths. The input delay times for the 1771-IH module versus the 1756-IC16 module are as follows: 1771-IH 1756-IC16 w/ 1492-C005005XE a) Off-to-On Delay 15ms (+/-7ms) 1ms max (plus selectable filter) b) On-to-Off Delay 15ms (+/-7ms) 4ms max (plus selectable filter) The 1771-IH module is rated 24V - 48V DC. The 1756-IC16 module is rated 30V - 60V DC. Refer to your 1771-IH and 1756-IC16 Installation Manual wiring schematics and diagrams for more details. [Reference Doc: 41170-997 (Version 00)] PN-114279 DIR 10000060090 (Version 01) Publication 1492-IN037B-EN-E (7) V. Wiring Diagrams (Cont’d) Conversion: 1771-IM (2) to 1756-IM16I (1) There are several key application considerations and system specifications (bottom of drawing) when using these components (conversion module, cable and input module). Read and understand these considerations before installation. WARNING Conversion Module 1492-CM1771-LD007 L1 L2 Not used Input 0 Input 1 Input 2 Input 3 Input 4 Input 5 Input 6 Input 7 L2 A 0 1 2 3 4 5 6 7 B 1771-WA Swing Arm From 1771-IM Cable 1492-C005005XH 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 1756-IM16I 2 4 1 3 5 7 9 11 13 15 6 8 10 12 14 16 Black White Red Green Orange Blue White/Black Red/Black Green/Black Orange/Black CABLE “A” 17 19 21 23 25 27 29 31 18 20 Conversion Module 1492-CM1771-LD007 L1 L2 Not used Input 0 Input 1 Input 2 Input 3 Input 4 Input 5 Input 6 Input 7 L2 1771-WA Swing Arm From 1771-IM A 0 1 2 3 4 5 6 7 B 1 Black 2 White 3 Red 4 Green 5 Orange 6 Blue 7 White/Black 8 Red/Black 9 Green/Black 10 Orange/Black 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 22 24 26 28 30 32 L2-0 L2-0 IN-0 IN-1 IN-2 IN-3 IN-4 IN-5 IN-6 IN-7 L2-0 L2-0 L2-0 L2-0 L2-0 L2-0 IN-8 IN-9 IN-10 IN-11 IN-12 IN-13 IN-14 IN-15 L2-1 L2-1 L2-1 L2-1 L2-1 L2-1 L2-1 L2-1 CABLE “B” Conversion Module Installation and Application Considerations This Bul. 1492 cable consists of 2 separate cables (cable “A” and cable “B”) wired to one 1756-IM16I RTB. Recommended cable lengths of 0.5 M / 0.5 M are shown. See table 2 for other lengths. The input delay times for the 1771-IM module versus the 1756-IM16I module are as follows: 1771-IM 1756-IM16I w/ 1492-C005005XH a) Off-to-On Delay 20ms (+/-6ms) 10ms max (plus selectable filter) b) On-to-Off Delay 20ms (+/-6ms) 8ms max (plus selectable filter) The 1771-IM module is rated 220V to 240V AC. The 1756-IM16I module is rated 159 - 265V AC only. Refer to your 1771-IM and 1756-IM16I Installation Manual wiring schematics and diagrams for more details. [Reference Doc: 41170-990 (Version 00)] PN-114279 DIR 10000060090 (Version 01) Publication 1492-IN037B-EN-E (8) V. Wiring Diagrams (Cont’d) Conversion: 1771-IN (2) to 1756-IN16 (1) There are several key application considerations and system specifications (bottom of drawing) when using these components (conversion module, cable and input module). Read and understand these considerations before installation. WARNING Conversion Module 1492-CM1771-LD007 + - Not used Input 0 Input 1 Input 2 Input 3 Input 4 Input 5 Input 6 Input 7 GND-1 A 0 1 2 3 4 5 6 7 B 1771-WA Swing Arm From 1771-IN Cable 1492-C005005XE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 1756-IN16 10 9 1 2 3 4 5 6 7 8 Black White Red Green Orange Blue White/Black Red/Black Green/Black Orange/Black CABLE “A” CABLE “B” 11 12 13 14 15 16 17 18 20 19 L2-0 L2-0 IN-0 IN-1 IN-2 IN-3 IN-4 IN-5 IN-6 IN-7 IN-8 IN-9 IN-10 IN-11 IN-12 IN-13 IN-14 IN-15 L2-1 L2-1 Conversion Module 1492-CM1771-LD007 + - Not used Input 0 Input 1 Input 2 Input 3 Input 4 Input 5 Input 6 Input 7 L2 A 0 1 2 3 4 5 6 7 B 1771-WA Swing Arm From 1771-IN 1 Black 2 White 3 Red 4 Green 5 Orange 6 Blue 7 White/Black 8 Red/Black 9 Green/Black 10 Orange/Black 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Conversion Module Installation and Application Considerations This Bul. 1492 cable consists of 2 separate cables (cable “A” and cable “B”) wired to one 1756-IN16 RTB. Recommended cable lengths of 0.5 M / 0.5 M are shown. See table 2 for other lengths. The input delay times for the 1771-IN module versus the 1756-IN16 module are as follows: a) Off-to-On Delay b) On-to-Off Delay 1771-IN 18ms (+/-10ms) 18ms (+/-10ms) 1756-IN16 w/ 1492-C005005XE 10ms max (plus selectable filter) 10ms max (plus selectable filter) The 1771-IN module is rated 24V AC. The 1756-IN16 module is rated 24V AC only. Refer to your 1771-IN and 1756-IN16 Installation Manual wiring schematics and diagrams for more details. [Reference Doc: 41170-998 (Version 00)] PN-114279 DIR 10000060090 (Version 01) Publication 1492-IN037B-EN-E (9) Conversion: 1771-IQ (2) to 1756-IB16I (1), Sinking V. Wiring Diagrams (Cont’d) There are several key application considerations and system specifications (bottom of drawing) when using these components (conversion module, cable and input module). Read and understand these considerations before installation. WARNING Conversion Module 1492-CM1771-LD007 + _ Not used IN 0 IN 1 IN 2 IN 3 IN 4 IN 5 IN 6 IN 7 L2 - 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 A 0 1 2 3 4 5 6 7 B 1771-WA Swing Arm From 1771-IQ Cable 1492-C005005XK Black White Red Green Orange Blue White/Black Red/Black Green/Black Orange/Black CABLE “A” Conversion Module 1492-CM1771-LD007 + _ Not used Input 0 Input 1 Input 2 Input 3 Input 4 Input 5 Input 6 Input 7 L2 - 1 1756-IB16I 2 4 1 3 5 7 9 11 13 15 6 8 10 12 14 16 17 19 21 23 25 27 29 31 18 20 22 24 26 28 30 32 L2-0 L2-0 IN-0 IN-1 IN-2 IN-3 IN-4 IN-5 IN-6 IN-7 L2-0 L2-0 L2-0 L2-0 L2-0 L2-0 IN-8 IN-9 IN-10 IN-11 IN-12 IN-13 IN-14 IN-15 L2-1 L2-1 L2-1 L2-1 L2-1 L2-1 L2-1 L2-1 1 Black 2 White 3 Red 4 Green 5 Orange 6 Blue 7 White/Black 8 Red/Black 9 Green/Black 10 Orange/Black 11 CABLE “B” 12 13 14 15 16 17 18 19 20 21 22 23 24 25 A 0 1 2 3 4 5 6 7 B 1771-WA Swing Arm From 1771-IQ Conversion Module Installation and Application Considerations This Bul. 1492 cable consists of 2 separate cables (cable “A” and cable “B”) wired to one 1756-IB16I RTB. Recommended cable lengths of 0.5 M / 0.5 M are shown. See table 2 for other lengths. The input delay times for the 1771-IQ module versus the 1756-IB16I module are as follows: a) Off-to-On Delay b) On-to-Off Delay 1771-IQ 12ms (+/-14ms) 12ms (+/-7ms) 1756-IB16I w/ 1492-C005005XK 1ms max (plus selectable filter) 4ms max (plus selectable filter) The 1771-IQ module is rated 5V to 30V DC. The 1756-IB16I module is rated 10V to 30V DC only. Refer to your 1771-IQ and 1756-IB16I Installation Manual wiring schematics and diagrams for more details. For Sourcing applications use 1492-CM1771-LD014. [Reference Doc: 41170-992 (Version 00)] PN-114279 DIR 10000060090 (Version 01) Publication 1492-IN037B-EN-E (10) V. Wiring Diagrams (Cont’d) WARNING Conversion: 1771-IT (2) to 1756-IB16 (1) There are several key application considerations and system specifications (bottom of drawing) when using these components (conversion module, cable and input module). Read and understand these considerations before installation. Conversion Module 1492-CM1771-LD007 + - Not used Input 0 Input 1 Input 2 Input 3 Input 4 Input 5 Input 6 Input 7 GND-1 A 0 1 2 3 4 5 6 7 B 1771-WA Swing Arm From 1771-IT 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Cable 1492-C005005XE 1756-IB16 10 9 1 2 3 4 5 6 7 8 Black White Red Green Orange Blue White/Black Red/Black Green/Black Orange/Black CABLE “A” CABLE “B” 11 12 13 14 15 16 17 18 20 19 GND-0 GND-0 IN-0 IN-1 IN-2 IN-3 IN-4 IN-5 IN-6 IN-7 IN-8 IN-9 IN-10 IN-11 IN-12 IN-13 IN-14 IN-15 GND-1 GND-1 Conversion Module 1492-CM1771-LD007 + - Not used Input 0 Input 1 Input 2 Input 3 Input 4 Input 5 Input 6 Input 7 GND-1 A 0 1 2 3 4 5 6 7 B 1771-WA Swing Arm From 1771-IT 1 Black 2 White 3 Red 4 Green 5 Orange 6 Blue 7 White/Black 8 Red/Black 9 Green/Black 10 Orange/Black 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Conversion Module Installation and Application Considerations This Bul. 1492 cable consists of 2 separate cables (cable “A” and cable “B”) wired to one 1756-IB16 RTB. Recommended cable lengths of 0.5 M / 0.5 M are shown. See table 2 for other lengths. The input delay times for the 1771-IT module versus the 1756-IB16 module are as follows: a) Off-to-On Delay b) On-to-Off Delay 1771-IT 0.6ms (+/-0.2ms) 0.6ms (+/-0.2ms) 1756-IB16 w/ 1492-C005005XE 1ms max (plus selectable filter) 2ms max (plus selectable filter) The 1771-IT module is rated 24V DC. The 1756-IB16 module is rated 24V DC only. Refer to your 1771-IT and 1756-IB16 Installation Manual wiring schematics and diagrams for more details. [Reference Doc: 41170-999 (Version 00)] PN-114279 DIR 10000060090 (Version 01) Publication 1492-IN037B-EN-E (11) PN-114279 PN-114279 DIR 10000060090 (Version 01) Publication 1492-IN037B-EN-E Printed in U.S.A. ">

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Key features
- Converts 1771 to 1756 I/O
- No field wire removal
- Space-saving design
- Various compatible I/O modules
- Easy installation
- Detailed Installation Manual included
- UL Classified, CSA, CE certified
- IP20 Environmental Rating
Frequently asked questions
The Allen-Bradley 1492 Field Conversion Module is designed to convert (2) 1771, 8 point I/O modules to (1) 1756, 16 point I/O module. This means that you can convert two 1771 modules at a time using this system.
Refer to Table 2 in Section III of the manual. It specifies the compatible cables for each 1771 and 1756 I/O module combination. The recommended cable length is 0.5M / 0.5M, but other lengths such as 1.0M / 1.0M, 0.5M / 1.0M, and 1.0M / 0.5M are also available.
The dimensions of the 1492 Conversion Module are 11.81 in. (height) x 4.38 in. (depth) x 1.5 in. (width). This translates to 300 mm. (height) x 111.25 mm (depth) x 38.1 mm (width) in metric units.