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1769-ECR

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The Allen-Bradley 1769-ECR is a right bus terminator end cap designed exclusively for the CompactLogix and Compact I/O system expansion. This 1769-ECR component is specifically crafted to resolve signal degradation and open-circuit issues across the I/O backplane, ensuring stable data transmission by closing the communication loop of the controller rack.
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Technical specifications for 1769-ECR

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1769-ECR
  • Product Family:
    CompactLogix
  • Product Type:
    Controller Module
  • Stock:
    1
  • Current Draw at 5.1V DC:
    5 mA
  • Current Draw at 24V DC:
    0 mA
  • North American Temperature Code:
    T3C Code
  • IEC Temperature Code:
    T4 Code
  • Enclosure:
    None (Open Style)
  • Max. Operating Altitude:
    2000 meters above sea level
  • Weight:
    0.06 kg
  • Estimated shipping dimensions:
    8.5x2.7x12.5cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Applications Configuration & Programming Environmental Ratings

Features:

  • Right-Side End Cap Termination for 1769 Compact I/O System Backplane
  • Provides Essential Mechanical Protection and Electrical Isolation for I/O Bus Chain
  • Operates in Conjunction with the Allen-Bradley CompactLogix Controllers and 1769 I/O Modules
The Allen-Bradley 1769-ECR Controller Module operates as the right end cap in a 1769 Compact I/O system, providing critical bus termination and physical protection for all modules within the rack. It maintains proper signal integrity across the communication backplane by terminating the I/O bus at the rightmost position, ensuring reliable data exchange between the controller and distributed I/O modules. Seamless integration is standard with the 1769-ECR, however proper installation is required to prevent communication errors and electrical interference that could affect system performance. The 1769-ECR has been designed specifically for the Compact I/O platform, incorporating an open-style construction that facilitates convenient mounting and maintenance within industrial enclosures.

The 1769-ECR provides essential termination functions common to the entire rack, and is a critical component of the communication path, directly affecting the proper, normal operation of the overall I/O system. One 1769-ECR end cap is required per rack to complete the I/O bank assembly. The 1769-ECR occupies a dedicated position at the right end of the module chain and is always located at the far right position, the designated end cap slot.

For standard Compact I/O applications, the 1769 System requires the 1769-ECR end cap module installed at the terminal position. In addition to standard bus termination, the 1769-ECR also provides physical protection. The 1769-ECR configuration ensures system integrity using the mechanical and electrical specifications defined in the Compact I/O design.

The 1769-ECR Allen-Bradley Controller Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Allen-Bradley 1769-ECR Controller Module Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Allen-Bradley 1769-ECR Controller Module Specs

General

  • Manufacturer Allen-Bradley
  • Model 1769-ECR
  • Condition New Original ready stock
  • Product Family 1769-ECL,1769-L32E
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • CompactLogix System Termination: Ends the local I/O chassis bank for 1769-L3x controllers.
  • MicroLogix 1500 Extension: Terminates the right side of 1769 expansion modules.
  • Signal Reflection Prevention: Eliminates signal noise on the high-speed CompactBus backplane.
  • Multi-Bank Chassis Setup: Closes the communication loop on final expansion chassis banks.
  • No Software Setup: Requires no parameters or programming in Studio 5000.
  • No Firmware Required: Operates strictly as a passive hardware component.
  • Hardware Plug-and-Play: Slides and locks onto the rightmost module mechanically.
  • Zero Memory Footprint: Uses no controller memory, network addresses, or EDS files.
  • Operating Temperature: 0 °C to 60 °C (32 °F to 140 °F).
  • Storage Temperature: -40 °C to 85 °C (-40 °F to 185 °F).
  • Relative Humidity: 5% to 95% non-condensing.
  • Enclosure Rating: Open-type (requires an industrial enclosure or cabinet).
  • Pollution Degree: Rated for Pollution Degree 2 industrial environments.
  • Bus Current Draw: Consumes 5 mA at 5.1V DC.
Description
The Allen-Bradley 1769-ECR Controller Module is a right end cap terminal specifically designed for the CompactLogix 1769 Compact I/O platform. The 1769-ECR serves as an essential terminating component that ensures proper electrical isolation and mechanical protection at the end of the I/O bus chain, preventing signal degradation and maintaining system integrity across distributed control architectures.

This 1769-ECR end cap is specifically crafted to complement the Compact I/O series controllers, offering a right end configuration for your systems. This component is categorized as a spare part or accessory, with a UPC of 662468993043, establishing easy tracking and inventory management. The 1769-ECR is engineered to address the critical need for bus termination in modular PLC systems, effectively preventing communication errors and data corruption that can arise from unterminated I/O chains in industrial automation environments.

Operating without an enclosure provides flexibility for various applications, reflecting an open-style design that facilitates convenient integration. This end cap maintains a maximum operational altitude of 2000 meters above sea level. When it comes to environmental conditions, the device can withstand temperatures ranging between 32 degrees and 140 degrees Fahrenheit. The 1769-ECR also performs well under relative humidity levels from 5% to 95%, provided that the environment is non-condensing. The 1769-ECR is specifically designed for deployment in manufacturing facilities, material handling systems, packaging lines, and process control applications where the 1769-ECR ensures reliable termination of the Compact I/O backplane communication bus.
Revisions

Revision Part #

Also known as

1769-ECR Ser A
1769-ECR/A, Series A, Rev A
Alternative Names
1769ECR I769-ECR I769ECR 1769-ECL 1769-L31 1769-L32C 1769-L32E
Technical notes
The Allen-Bradley 1769-ECR end cap is a right end cap from the Allen-Bradley/Rockwell Automation CompactLogix series. It is used to cap the right end of the communication bus on a controller from the Allen-Bradley 1769 Compact I/O product line. The 1769-ECR right end cap has the European Hazardous Location Approval rating and the IEC Hazardous Location Approval rating. Its operating temperature range is from 0 to 60 degrees Celsius and its storage temperature range is from -40 to 85 degrees Celsius. The 1769-ECR right end cap can be mounted on a DIN Rail or a panel, and the mounting base will affect the stability of the end cap and how much shock it can withstand.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the primary function of the 1769-ECR terminator?
The 1769-ECR End Cap Terminator is designed to terminate the communication bus at the end of a Compact I/O system. It prevents signal reflections that can occur on the backplane bus, ensuring stable data transmission and reliable communication between connected I/O modules and the controller.
Which industries commonly use the 1769-ECR?
The 1769-ECR is widely deployed across various industrial sectors, including food and beverage processing, wastewater treatment facilities, material handling systems, packaging equipment, and automotive manufacturing lines. These applications rely on dependable communication networks where stable backplane performance is essential for continuous operation.
Does the 1769-ECR require a separate enclosure?
No. The 1769-ECR features an open-style design and does not require its own enclosure. It is intended to be installed within a suitable industrial control cabinet alongside Compact I/O modules, providing a simple and space-efficient termination solution.
Is the 1769-ECR suitable for hazardous locations?
Yes. The 1769-ECR complies with North American T3C and IEC T4 temperature classifications, making it suitable for installation in approved hazardous industrial environments where equipment must meet specific safety and temperature requirements.

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