Installation Instructions
1746-to-5069 I/O Conversion System
(Cat 1492-CH1746-4, Cat 1492-CH1746-7, Cat 1492-CH1746-10, Cat 1492-CH1746-13)
WARNING: To prevent electrical shock, disconnect from power source before installing or servicing. Follow NFPA 70E requirements. Ins tall in suitable enclosure. Keep free from
contaminants. Installation, adjustments, putting into service, use, assembly, disassembly, and maintenance shall be carried out by suitably tr ained personnel in accordance with applicable
code of practice. In case of malfunction or damage, no attempts at repair should be made. The product should be returned to the manufacturer for repair. Do not dismantle the product.
I. Conversion Preparation:
Prior to actually beginning the removal of the 1746 I/O hardware, it is vital to prepare the conversion by at minimum reviewing the following steps:
a) Refer to the Selection Guide (Publication number
components will fit on the upper mounting plate DIN rail (shown below). Refer to Appendix B for the maximum available space for the 5069 components.
b) Inventory the 1492 conversion system components on site to ensure the correct components are available, before removing any 1746 I/O hardware. Refer
to Appendix A 1746 to 5069 I/O Chassis Conversion System Selection Table for details.
1492-SG010A-EN-P
) which is available on https://ab.rockwellautomation.com Make sure that all 5069
Upper mounting plate: To mount the 5069 system modules
and to protect the conversion modules.
Chassis mounting hardware: To attach the upper
mounting plate to the lower mounting plate.
Lower mounting plate: To mount conversion modules.
1492-EAHJ35 End Anchors: (not included) To secure the
5069 system to the DIN rail. 2 pieces required.
Conversion Module: Provides interface from the field wiring terminal block to the 5069 system.
c) Review the application considerations in each Conversion Module’s Installation Instructions to ensure the conversion module is not
being misapplied. A wiring diagram which shows the circuit connections from the 1746 I/O module to the 5069 I/O module is also in the
Conversion Module Installation Instructions to assist in possible troubleshooting.
d) Review Rockwell Automation Publication 1770-4.x Industrial Automation Wiring and Grounding Guidelines (available at the Publication Literature Library: https://ab.rockwellautomation.com). Ensure to follow these guidelines with particular attention to ground when
installing the conversion system.
e) Obtain current and correct 1746 I/O wiring schematics prior to disassembly. Typically this will not be used but should be available in
advance for reference.
f) Tools required: Flat blade and Philips screwdriver, box or socket wrench set (size dependent on existing 1746 system installation).
II. Conversion Steps
WARNING: De-energize and lockout any and all power to all I/O field devices connected to the 1746 I/O Chassis, and the power to the 1746 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. Work shall be performed by qualified personnel.
1) Back up all data and information stored on the 1746 system
a) Refer to Chapter four of the Publication LG500-GR002J-EN-E and publication 1756-RM085D-EN-P which can be found on https://ab.rockwellautomation.com
2) Remove the field wiring terminal block from the 1746 I/O cards
a) Start I/O field wiring terminal block removal beginning with the left most I/O module in the chassis.
To remove the 1746 I/O field wiring (Refer to Figure 2a), unscrew the two removable terminal block mounting screws (if applicable).
Figure 2a Figure 2b Figure 2c
Publication 1492-IN132A-EN-E - February 2020 PN-550386 DIR 10004723658 (Version 05)
Figure 2d
Figure 2e
b) Note the slot number and catalog number of the card. (See figure 2b)
c) Write down the slot number and card catalog number on an adhesive label (not provided). (See figure 2c)
d) Place the label on the field wiring as shown. (See figure 2d) The field wiring terminal block must be reconnected at a later step. (Step 6a)
e) Repeat steps a through d until all 1746 I/O field wiring terminal blocks are removed from the 1746 I/O Chassis. (See figure 2e)
3) Remove the 1746 I/O Chassis from the Control Cabinet
a) Refer to Figure 3a. Loosen (do not remove) the upper mounting hardware which attaches the 1746 I/O Chassis to the control
cabinet enough to remove the chassis. This mounting hardware will be used to mount the conversion system lower mounting plate in
Section 4.
Figure 3a
Figure 3b
Figure 3c
b) Remove the ground wire from the SLC500 chassis. This ground wire will be reused on the 1492 conversion system chassis.
c) Remove the lower mounting hardware which attaches the 1746 I/O Chassis to the control cabinet in order to remove the chassis. (See figure 3b)
d) Carefully remove the 1746 I/O Chassis from the control cabinet. (See figure 3c)
NOTICE: Before installing the conversion system mounting plates into the control panel, ensure you follow the system grounding guidelines found in Rockwell Automation Publication 1770-4.x
Industrial Automation wiring and Grounding Guidelines. Follow PLC chassis mounting information.
4) Install the 1492 I/O Conversion System Base-plate in the Control Panel
a) Refer to Figure 4a. Place the 1492 conversion lower mounting plate into the control cabinet at the location previously used by the 1746 I/O chassis.
The lower mounting plate mounting hole locations match those of the 1746 I/O chassis. Use the two upper mounting hardware to place the lower mounting
plate into position.
Figure 4a
Figure 4b
Figure 4c
b) Refer to Figure 4b. Use the two lower mounting hardware to fix the lower mounting plate to the control cabinet. Securely fasten all
hardware so as not to exceed the torque value of the mounting hardware. NOTE: The hardware you select will depend on what was used to
mount the 1746 I/O chassis.
c) Make sure the ground wire is connected on the chassis. The ground wire will need to be rerouted. (See figure 4c)
Publication 1492-IN132A-EN-E - February 2020 PN-550386 DIR 10004723658 (Version 05)
5) Install the 1746 I/O Conversion Modules into the Lower Mounting Plate
a) Begin the conversion at the left most slot of the mounting plate and continue inserting modules left-to-right. Find the 1492 conversion module that mates to the
1746 I/O module that was previously located in that slot of the 1746 I/O chassis. NOTE: Closely review the 1746 I/O module Catalog Number and slot location
information you placed on the field wiring label in steps 2c and 2d. The nameplate label on the conversion module (refer to Figure 5a for an example) indicates
which 1746 I/O modules are compatible with which 5069 modules. Compare that information to the label on the field wiring to ensure there is a functional match.
Refer to Appendix A for a conversion list.
Figure 5a
Figure 5a
b) Insert the Conversion Module into the Lower mounting plate:
Slide the conversion module housing under the slot in the lower mounting plate. (see figure 5b)
c) Snap the housing in place. There is a tab on the conversion module housing that fits into the rectangular hole on the lower mounting plate. Depress the locking
tab to properly snap the housing into place. (see figure 5c)
d) Repeat steps 5a through 5c until all of the required conversion modules are installed into the lower mounting plate. (See figure 5d)
Figure 5b Figure 5c
Figure 5d
6) Install the Field wiring terminal blocks to the 1492 conversion modules
Before inserting the 1746 I/O field wiring into the conversion module, it is recommended that the terminal block contacts be
carefully inspected and cleaned if necessary to ensure a good electrical connection with the conversion module. A mild abrasive (e.g. pencil
eraser) is recommended. Do not use a solvent.
a) Locate the field wiring terminal block which was disconnected in step 2a. Check the labels on the field wiring and on the conversion modules to verify that
the connections are correct. Mount the field terminal block onto the conversion module and fasten screws (if applicable). (See figure 6a)
b) Repeat step a until all of the field wiring terminal block and conversion modules are connected. (See figure 6b)
II. Conversion Steps
7) Install the 1492 Upper Mounting Plate to the Lower Mounting Plate
a) Locate the two pins which are provided in the mounting hardware bag. Align the holes in the upper and lower mounting plates. Insert the pin
in the holes on each side of the mounting plates. (See figures 7a and 7b)
Figure 6a
Figure 6b
Figure 7a Figure 7b Figure 7c Figure 7d Figure 7e
Publication 1492-IN132A-EN-E - February 2020 PN-550386 DIR 10004723658 (Version 05)
b) Place a hitch pin (provided in the mounting hardware bag) into the holes in each pin. (see Figure 7c)
c) Mount the four screws (provided in the mounting hardware bag) into the holes on the upper mounting plate (see Figures 7d & 7e). These screws should
be torqued to 21 lb-in (2.37 Nm).
NOTICE: Do not install any other components on the DIN (such as a power supply) rail besides the controller, end anchors and I/O module s. The chassis was designed to support these items
only.
8) Attach the 5069 system to the upper mounting plate
a) Place the 5069 system onto the DIN rail on the upper mounting plate. (see Figure 8a) Make sure to use end anchors on each end of the 5069 system
(see Figure 8b). Make sure the I/O cards are placed in the same order as they were on the 1746 chassis.
Figure 8a
Figure 8b
9) Install the 1492 conversion modules into the 5069 I/O cards
a) Place the terminal block end of the conversion module into the corresponding 5069 I/O card. (See Figure 9a)
Figure 9bFigure 9a
b) Repeat step a until all conversion module terminal blocks have been connected. (See Figure 9b) Please refer to the label placed on the conversion module
in step 2d. It is very important that the conversion modules are connected to the correct 5069 I/O card as there may be different voltages applied.
System Testing Before Applying Power
Before applying power to the system, check continuity from the field wiring terminal block (typically at the bottom of the control panel) to the 5069 I/O
module terminal block. This should be done for several points of each I/O module to ensure connection of the conversion system. Make sure that an FPD
card is installed if cards of different voltages are used. For details refer to 5069-IN001C-EN-P on https://literature.rockwellautomation.com
Appendix A
1746-to-5069 Chassis Conversion System Selection Table
1) Determine the number of 1746 I/O modules used in the 1746 I/O Chassis to be converted to 5069. NOTE: In some cases two 5069 modules may be
required for one 1746 module. Select the applicable 1492 conversion modules from the Conversion Module Selection Table below.
2) Review the Max Slots for I/O and chassis width data from Appendix B, and select a 1492 I/O Chassis which meets your conversion needs from step 1. The
combined depth of the conversion assembly with the 5069 chassis mounted is 8.75 inches.
Publication 1492-IN132A-EN-E - February 2020 PN-550386 DIR 10004723658 (Version 05)
SLC500 IO
1746 Chassis
1492 Max . Slo ts CHASSIS LENGTH Max. number of 5069 I/O card s
1746-A 4
1492-CH1746-4
49.25" (235mm) 4
1746-A 7
1492-CH1746-7
7 13.33" (339mm) 9
1746-A 10
1492-CH1746-10
10 17.88" (454mm) 14
1746-A 13
1492-CH1746-13
13 22.00" (559mm)
USEABLE LENGTH
8.00" (203mm)
12.08" ( 307mm)
16.63" (422mm)
20.75" (527mm) 19
Module Catalog
Number (To be
converted)
1746-IA16 5069-IA16
1746-IM16 5069-IA16 240VAC Input Module
1746-IB16 5069-IB16 Current Sinking DC Input Module
1746-ITB16 5069-IB16 Fast Response DC Sinking Input Module
1746-OA16 5069-OA16 1492-CM1746-M02 120/240V AC Output Module
1746-OB16 5069-OB16
1746-OB16E 5069-OB16 Current Sourcing DC Output Module
1746-OW16 5069-OW16 1492-CM1746-M04 AC/DC Relay Output Module
1746-NI8 5069-IF8 1492-CM1746-M05 High Resolution (8) Analog Input Module
1746-NI4 5069-IY4 1492-CM1746-M06 High Resolution (4) Analog Input Module
1746-NR4 5069-IY4 1492-CM1746-M07 SLC 500 RTD/Resistance Input Module
1746-NT4 5069-IY4 1492-CM1746-M09 4-Channel Thermocouple/mV Input Module
1746-NO4I 5069-OF4
1746-NO4V 5069-OF4 4 Point Analog Output Module (Voltage)
1746-NO8I 5069-OF8
1746-NO8V 5069-OF8 8 Point Analog Output Module (Voltage)
1746-IB32 5069-IB16 (2x) 1492-CM1746-M12 Current Sinking DC Input Module
1746-OB32 5069-OB16 (2x)
1746-OB32E 5069-OB16 (2x) Current Sourcing DC Output Module
Appendix B
5069 IO Modules
Catalog Number
(To be used)
Conversion Module
Catalog Number
1492-CM1746-M01
1492-CM1746-M03
1492-CM1746-M10
1492-CM1746-M11
1492-CM1746-M13
Conversion Module Description
120VAC Input Module
Current Sourcing DC Output Module
4 Point Analog Output Module (Current)
8 Point Analog Output Module (Current)
Current Sourcing DC Output Module
Selection Table for 1746-to-5069 Conversion Chassis
1492 Conve rsion Chass is
Rockwell Automation Support
For Technical Support, visit ROK.AUTO/SUPPORT.
Rockwell Automation maintains current product environmental compliance information on its website at rok.auto/pec.
Allen-Bradley, Rockwell Software, and Rockwell Automation are trademarks of Rockwell Automation, Inc.
Trademarks not belonging to Rockwell Automation are property of their respective companies.
Publication 1492-IN132A-EN-E - February 2020
Copyright © 2019 Rockwell Automation, Inc. All Rights Reserved. Printed in USA.
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9) Установите 1492 модуля преобразования в карты 5069 входов / выходов карты
a) Поместите конец блока терминала модуля преобразования в соответствующую карту 5069 Ввода/Выход. (см. рис. 9а)
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PN-550386 DIR 10004723658 (Version 05)
SLC500 IO
1746-A 4
1492-CH1746-4
4 9.25" ( 235mm) 4
1746-A 7
1492-CH1746-7
7 13.33" (339mm) 9
1746-A 10
1492-CH1746-10
10 17.88" ( 454mm) 14
1746-A 13
1492-CH1746-13
13 22.00" ( 559mm)
8.00" (203mm)
12.08" ( 307mm)
16.63" (422mm)
20.75" (527mm) 19
1746-IA16 5069-IA16
1746-IM16 5069-IA16
1746-IB16 5069-IB16
1746-ITB16 5069-IB16
1746-OA16 5069-OA16 1492-CM1746-M02
1746-OB16 5069-OB16
1746-OB16E 5069-OB16
1746-OW16 5069-OW16 1492-CM1746-M04
1746-NI8 5069-IF8 1492-CM1746-M05
1746-NI4 5069-IY4 1492-CM1746-M06
1746-NR4 5069-IY4 1492-CM1746-M07
1746-NT4 5069-IY4 1492-CM1746-M09
1746-NO4I 5069-OF4
1746-NO4V 5069-OF4
1746-NO8I 5069-OF8
1746-NO8V 5069-OF8
1746-IB32 5069-IB16 (2x)
1746-OB32 5069-OB16 (2x)
1746-OB32E
5069-OB16 (2x)
1492-CM1746-M01
1492-CM1746-M03
1492-CM1746-M10
1492-CM1746-M11
1492-CM1746-M12
1492-CM1746-M13
4
Rockwell Automation Support
For Technical Support, visit ROK.AUTO/SUPPORT.
Rockwell Automation maintains current product environmental compliance information on its website at rok.auto/pec.
Allen-Bradley, Rockwell Software, and Rockwell Automation are trademarks of Rockwell Automation, Inc.
Trademarks not belonging to Rockwell Automation are property of their respective companies.
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