The Allen-Bradley 1769-L31ER-NSE, also cataloged as the 1769-L31ER-NSE CompactLogix 5370 L3 Controller, operates as a dedicated hardware component for programmable logic execution and EtherNet/IP communication within CompactLogix automation systems.
Hardware Specifications
Parameter
Specification
Model
1769-L31ER-NSE
Brand
Allen-Bradley / Rockwell Automation
Origin
United States
Product Type
CompactLogix Controller
Product Series
CompactLogix 5370 L3
Memory
0.5 MB
Communication Interface
2 x EtherNet/IP ports with Device-Level Ring (DLR) support
Programming Interface
1 x USB 2.0 full-speed port
Motion Control Capacity
Up to 16 axes through Integrated Motion on EtherNet/IP
I/O Expansion Capacity
Up to 16 Compact I/O modules across 3 banks
Power Supply Voltage
24 VDC
Enclosure Type
Open style
EtherNet/IP and Logix Platform Integration
The 1769-L31ER-NSE controller uses the Logix control platform for application execution and device communication. It supports EtherNet/IP networks with dual communication ports, allowing linear and Device-Level Ring network configurations. In addition, the controller exchanges data through deterministic industrial Ethernet communication paths.
Furthermore, the CompactLogix architecture provides I/O density scaling through local Compact I/O expansion. The controller connects to distributed devices and field components through EtherNet/IP communication, while Studio 5000 Logix Designer provides the programming environment.
The controller supports firmware flash compatibility within the CompactLogix 5370 L3 platform. Therefore, users must verify controller firmware revision compatibility before applying firmware updates or replacing hardware components.
Frequently Asked Questions (FAQ)
Q: Does the 1769-L31ER-NSE support EtherNet/IP ring communication? A: Yes. The controller provides dual EtherNet/IP ports and supports Device-Level Ring (DLR) network configurations.
Q: Can the 1769-L31ER-NSE control motion devices? A: Yes. The controller supports up to 16 motion axes through Integrated Motion on EtherNet/IP.
Q: Does the controller support hot-swapping of Compact I/O modules? A: No hot-swap capability is specified for this controller. Power removal and standard installation procedures should be followed when adding or removing I/O modules.
Field Installation Guidelines
Install the 1769-L31ER-NSE controller on a suitable DIN rail mounting system with proper mechanical support. Keep Ethernet communication cables separated from high-voltage power conductors to reduce electrical interference.
Connect the protective grounding system according to industrial control panel practices. Maintain correct shielding termination for Ethernet cables when required by the installation environment.
Verify the 24 VDC power supply polarity before energizing the controller. Confirm the firmware revision, network addressing, and I/O configuration before placing the controller into operational service.
