Allen Bradley CompactLogix Right End Cap 1769-ECR


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  • Manufacturer: Allen Bradley – PLC
  • Product Type: PLC/Programmable Logic Controller
  • Part Number: 1769-ECR
  • Series: CompactLogix
  • UPC: 10662468993040
SKU: 1769-ECR Category:


The 1769-ECR is an Allen-Bradley component included in the CompactLogix series. It is a right-end cap component supporting the 1769 Compact I/O line. This Allen Bradley unit is used to cap the right end of the communication bus on a control module. The 1769-ECR is certified with the IEC hazardous location approval and European hazardous location approval ratings. It is designed to withstand thermal shock, dry heat, and cold environments.

  • Current draw at 5.1V DC: 5 mA
  • Current draw at 24V DC: 0 mA
  • Operating altitude: 2000 m (6562 ft)
  • North American temp code: T3C
  • Shipping weight, approx: 130 g (0.286 lb)
  • Enclosure type rating: None (open style)
  • Operating temperature: IEC 60068-2-1 (Test Ad, Operating Cold) IEC 60068-2-2 (Test Bd, Operating Dry Heat) IEC 60068-2-14 (Test Nb, Operating Thermal Shock) 0 > Ta > 60 °C (32 > Ta > 140 °F)
  • Nonoperating temperature: IEC 60068-2-1 (Test Ab, Unpackaged Nonoperating Cold) IEC 60068-2-2 (Test Bb, Unpackaged Nonoperating Dry Heat) IEC 60068-2-14 (Test Na, Unpackaged Nonoperating Thermal Shock) -40 > Ta > 85 °C (-40 > Ta > 185 °F)
  • Relative humidity: 5…95% noncondensing
  • Emissions: CISPR 11 Group 1, Class A
  • ESD immunity: IEC 61000-4-2 8 kV air discharges
  • Radiated RF immunity: IEC 61000-4-3 10V/m with 1 kHz sine-wave 80% AM from 80…2700 MHz 10V/m with 200 Hz 50%Pulse 100% AM at 900 MHz 10V/m with 200 Hz 50% Pulse 100% AM at 1890 MHz

The Allen-Bradley 1769-ECR is a Right End Cap (ECR) module that is used with the CompactLogix controller series. This module functions as a bus terminator, terminating the FlexBus circuitry, signaling the end of the CompactLogix assembly. This module is necessary to qualify the CompactLogix configuration. The 1769-ECR features a current draw of 5 mA at 5.1 VDC. It has an operating altitude of 2000 m or 6562 ft and approximately weighs 130 grams or 0.286 lb. It has an open style enclosure rating, an operating temperature of 0 -60 °C or 32-140 °F) while the storage temperature is -40 to 85 °C (-40 to 185 °F and relative humidity of 5-95%, non-condensing.

It must be installed at a location with vibration not exceeding 5 g, 10-500 Hz. It also has an operating shock rating of 20g when DIN rail is mounted and 30g when the CompactLogix system is directly mounted to the enclosure. The 1769-ECR must only be installed or removed when power is removed from the system. Removal or insertion under power will cause controller error and stoppage which is not desirable especially with a functional and actively operating system. To install the 1769-ECR, the bus lever must be lifted from its engaged position. Once done, align the ECR module along with the guide slots and gently push the ECR module until it is adjacent and in line with the CompactLogix module. Engaged the bus lever to connect the ECR module and close the FlexBus. If resistance is felt during the engagement of the bus lever, inspect if the ER is properly aligned to the module and the guide slot.

Additional information

Weight 0.15 kg


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