1769-ECR Allen-Bradley Bus Terminator

1769-ECR Allen-Bradley Bus Terminator | New & Original Stock

Availability: 99 left in stock

Allen-Bradley 1769-ECR Right End Cap Bus Terminator The Allen-Bradley 1769-ECR, also cataloged as the 1769-ECR Right End Cap Bus Terminator,...

SKU: 1769-ECR

Manufacturer: Allen Bradley
Product No.: 1769-ECR
Product Type: Bus Terminators
Product Origin: USA
Payment:T/T, Western Union
Weight: 130g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Allen-Bradley 1769-ECR Right End Cap Bus Terminator

The Allen-Bradley 1769-ECR, also cataloged as the 1769-ECR Right End Cap Bus Terminator, operates as a dedicated hardware component for passive backplane termination within CompactLogix and MicroLogix 1500 system platforms. This unit establishes the end-of-line impedance parameters for the underlying communication tracks. It seals the final termination point to allow deterministic packet execution among standard expansion hardware segments and main processor nodes.

Hardware Specifications

Parameter	Specification
Model	1769-ECR
Brand	Allen-Bradley
Origin	United States
Weight	0.13 kg
Dimensions	118 x 20 x 87 mm
Operating Temp	0 to 60 deg C
Power Consumption	0.026 W maximum (5 mA at 5.1 VDC nominal)
Product Type	Right End Cap Bus Terminator
System Compatibility	CompactLogix 5370, 1768-L4x, MicroLogix 1500
Installation Position	Right-hand terminus of last I/O module slot
Function	Passive electrical bus termination
Hardware Series	Series A
Relative Humidity	5% to 95% non-condensing
Storage Temp	-40 to 85 deg C

Backplane Bus Communication Velocity and Signal Integrity

The passive termination apparatus provides the exact impedance matching constraints necessary to support fast backplane bus communication velocity limits across all 1769 chassis rails. By absorbing residual data signals at the final slot boundary, the module suppresses electromagnetic wave reflection along the logic traces. This suppression preserves the voltage transitions of Profinet or EtherNet/IP deterministic networks passing data packets through the main local rack. It provides the physical closed-loop execution environment required by the controller to discover and scan the full I/O density configuration without reporting communication timeouts.

Frequently Asked Questions

Q: Can the 1769 backplane execute logic processing or identify I/O modules if this unit is absent?

A: No. The system processor stops communication loop routines and registers a fatal bus fault when the bus terminator is missing. The electrical circuitry tracks remain uncompleted, preventing signal translation through any coupled expansion modules.

Q: Is this end cap terminator component rated for hot-swap operations under energized backplane conditions?

A: No. The termination assembly lacks live-insertion capabilities. Power generation to the entire 1769 chassis must remain completely isolated during installation or removal procedures to prevent logic pin arcing or unintended system trips.

Q: Does this hardware component require local address configuration or local firmware flash modification?

A: No. The module is a non-addressable, passive electrical hardware device containing no onboard microcode. It requires zero configuration parameters inside Studio 5000 or RSLogix 5000 environments to complete the physical bus track.

Field Installation Guidelines

Disconnect all primary and auxiliary electrical power distribution lines from the 1769 power supply before mounting the termination hardware.
Align the mechanical sliding tongue guides with the female receiving channels located on the far right hand side of the final I/O module.
Press the integrated mechanical locking latch down completely until the click configuration confirms a rigid, vibration-resistant attachment.
Inspect the physical internal contact finger springs to ensure no dust layers or foreign object debris interfere with the backplane logic track interface.
Prevent high-power AC cable layouts from crossing the structural surface of the end cap to avoid high-frequency noise injection on the terminated data channels.

What's clients say about us

Excellent Emergency Support!

Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.

Mark Thompson

Maintenance Manager, USA

Reliable Source for New Spares

Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.

Robert Hoffmann

Engineering Lead, Germany

Top-tier Service and Quality

We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.