Allen-Bradley 1769-ECL CompactLogix Left End Cap Terminator
Product Introduction
The 1769-ECL module works as a dedicated left-end cap for the 1769 Compact I/O bus. Allen-Bradley designed this terminator to close the left side of your controller's communication chain. Many users pair it with CompactLogix or MicroLogix 1500 systems. You will find it essential for proper backplane termination.
Additionally, the 1769-ECL draws very little power. It consumes only 5 mA at 5V DC from the bus. This low draw keeps your system efficient. The device also handles up to 1.4 A at 24V on the backplane. Its total power consumption reaches 33.6 Watts, with dissipation at just 7.5 Watts.
For thermal performance, this left end cap operates between 0°C and 60°C (32-140°F). It also survives non-operating temperatures from -40°C to 85°C (-40-185°F). The unit carries a North American temperature code of T3C. However, it has no IEC temperature code assigned.
Technical Specifications
Here are the key electrical and physical ratings for the 1769-ECL:
Manufacturer: Allen-Bradley
Part Number: 1769-ECL
Product Line: CompactLogix
Bus Current Draw: 5 mA at 5V DC (max)
Backplane Current: 1.4 A at 24V
Power Consumption: 33.6 Watts
Power Dissipation: 7.5 Watts
Operating Altitude: 2000 m (6562 feet)
Enclosure Rating: None (open style)
UPC: 10662468993057
Status: Current product
Meanwhile, the device supports both Series A and B revisions. It remains fully compatible with existing 1769 controllers and I/O banks. You can install it without any special tools.
Mechanical and Environmental Ratings
Vibration and Shock Resistance
Operating Vibration: 5 g at 10–500 Hz
Operating Shock (DIN rail): 20 g
Operating Shock (panel): 20 g
Non-operating Shock (DIN rail): 30 g
Non-operating Shock (panel): 40 g
Humidity and Emissions
Relative Humidity: 5–95% noncondensing
EMC Emissions: Group 1, Class A
ESD Immunity: 8 kV air discharge
Specifically, the 1769-ECL handles harsh industrial environments. It passes tests for cold, dry heat, and thermal shock. You can rely on it for consistent bus termination.
Shipping Information
We ship all orders via FedEx, UPS, or DHL. Please allow 1-2 business days for processing.
Frequently Asked Questions (FAQ)
1. Do I need the 1769-ECL for my CompactLogix system?
Yes, you must install the 1769-ECL on the left end of the bus. Without it, the communication bus may work incorrectly or fail.
2. Can I use this end cap on the right side?
No, the 1769-ECL is specifically a left-end cap. The right side requires a different terminator model.
3. Does the 1769-ECL work with MicroLogix 1500?
Yes, this end cap is fully compatible with MicroLogix 1500 systems that use 1769 I/O expansion.
4. How do I know if my 1769-ECL is working properly?
The device has no LEDs or indicators. You will know it works when your system communicates without bus errors.
5. What is the return policy for this item?
Please contact our sales team within 14 days of delivery. We accept returns on unused, unopened units only.
