1769-ECR Allen Bradley Compact I/O Right End Cap Terminator

Availability: 99 left in stock

Product Description The 1769-ECR is a Right End Cap for Allen Bradley CompactLogix and MicroLogix 1500 I/O banks. It terminates the 1769 backplane bus, ensuring stable communication and protecting...

SKU: 1769-ECR

Manufacturer: Allen Bradley
Product No.: 1769-ECR
Product Type: Compact I/O Right End Cap Terminator
Product Origin: USA
Payment:T/T, Western Union
Weight: 600g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Product Description

The 1769-ECR is a Right End Cap for Allen Bradley CompactLogix and MicroLogix 1500 I/O banks. It terminates the 1769 backplane bus, ensuring stable communication and protecting the exposed pins of the last I/O module. Essential for all 1769 I/O banks, the Series A design provides a secure latch to maintain electrical continuity and prevent signal reflection.

Technical Specifications

Item	Specification
Catalog Number	1769-ECR
Module Type	Right End Cap / Bus Terminator
Hardware Series	Series A
Compatibility	All 1769 Compact I/O systems (CompactLogix 5370, 1768-L4x, MicroLogix 1500)
Backplane Current Draw	5 mA @ 5.1V DC
Function	Passive termination for Logix communication bus
Mounting	Right-hand side of last I/O module (integrated latch)
Operating Temperature	0–60 °C (32–140 °F)
Dimensions (HxWxD)	118 x 20 x 87 mm
Weight	0.6kg

Key Notes

Essential: One 1769-ECR per I/O bank; placed at the far right of the last module.
Functionality: Prevents bus faults, signal reflection, and protects backplane pins.
Compatibility: Works with all current and legacy 1769 I/O modules.

FAQs

Q: Can a CompactLogix system run without the 1769-ECR?
A: No. Missing the end cap causes a bus fault and prevents communication with expansion modules.

Q: Is there a left end cap?
A: Typically not required; the controller or a 1769-ECL handles left-side termination if needed.

Q: Are there other series?
A: Series A is standard; minor revisions exist, but all remain fully compatible.

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