Description

Allen-Bradley 1769-ECL CompactLogix End Cap Terminator

The Allen-Bradley 1769-ECL, also cataloged as the 1769-ECL End Cap/Terminator, operates as a dedicated hardware component for terminating the left side of the CompactLogix 1769 Compact I/O communication bus. This module provides electrical bus closure and maintains proper backplane configuration for CompactLogix controller assemblies.

Hardware Specifications

Parameter	Specification
Model	1769-ECL
Brand	Allen-Bradley
Origin	United States
Product Type	CompactLogix End Cap/Terminator
Product Line	CompactLogix 1769 Compact I/O
Series	A and B
Module Type	Left End Cap
Weight	0.13 lbs (0.06 kg)
Dimensions	87 x 15 x 118 mm
Operating Temp	0 to 60 deg C (32 to 140 deg F)
Enclosure Type Rating	Open Style
Maximum Bus Current Draw	5 mA at 5.1 VDC
Current Draw at 24 VDC	0 mA
Backplane Current	1.4 A at 24 VDC
Power Consumption	33.6 W
Power Dissipation	7.5 W
UPC	662468993050

EtherNet/IP and CompactLogix Bus Configuration Characteristics

The 1769-ECL functions as a physical termination component within CompactLogix 1769 I/O assemblies. Furthermore, it closes the left side of the communication bus and supports correct module positioning within the controller system.

Allen-Bradley CompactLogix platforms use backplane bus communication to exchange control data between controller components and I/O modules. Therefore, the end cap maintains bus continuity and prevents an open-ended configuration condition at the assembly boundary.

The module requires minimal bus power consumption, drawing 5 mA at 5.1 VDC. In addition, it does not consume current from the 24 VDC supply path. The open-style construction supports installation inside industrial control cabinets with appropriate environmental protection.

Frequently Asked Questions

Q: What is the installation position of the 1769-ECL module?
A: The 1769-ECL is installed on the left end of a CompactLogix 1769 Compact I/O assembly. It is designed specifically as a left-side bus termination component.

Q: Does the 1769-ECL provide additional I/O channels or communication ports?
A: No. The 1769-ECL is a passive end cap component and does not provide input, output, or external communication functions.

Q: What power does the 1769-ECL consume from the system bus?
A: The module draws 5 mA at 5.1 VDC and draws 0 mA at 24 VDC according to the specified electrical characteristics.

Field Installation Guidelines

Install the 1769-ECL directly on the left side of the CompactLogix 1769 Compact I/O assembly after all required modules are positioned.

Verify that the end cap engages correctly with the adjacent module connector before system power application. Ensure that the controller rack assembly remains mechanically secured inside the control enclosure.

Keep the CompactLogix backplane connection area free from contamination, moisture, and conductive debris. Additionally, route field wiring separately from high-voltage conductors to reduce electrical interference.

Confirm that the module placement matches the approved CompactLogix system configuration before commissioning the controller assembly.

Specifications

• Brand: Allen Bradley

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems