1769-L30ERMS | Allen-Bradley Compact GuardLogix 5370 Safety Controller

System Architecture

The 1769-L30ERMS is a high-performance safety controller belonging to the Compact GuardLogix 5370 family. It provides integrated safety and motion control within a single platform, utilizing a dual-memory architecture to separate standard control logic from safety-critical routines. This module is engineered to meet rigorous international safety standards, supporting up to SIL 3 and PLe certifications. By leveraging a common software environment, the 1769-L30ERMS simplifies the design and commissioning of complex automated systems that require synchronized safety and motion over an EtherNet/IP network.

Technical Specifications

• Manufacturer: Allen-Bradley / Rockwell Automation

• Product Series: Compact GuardLogix 5370

• Model Number: 1769-L30ERMS

• Standard User Memory: 1 MB

• Safety User Memory: 0.5 MB

• Communication Ports: 2 EtherNet/IP (supports DLR), 1 USB 2.0 (programming/service)

• EtherNet/IP Nodes: Supports up to 16 nodes

• Integrated Motion: Up to 4 axes of CIP Motion

• I/O Module Capacity: Supports up to 8 local 1769 Compact I/O modules

• Controller Tasks: 32 total tasks (standard and safety)

• Program Capacity: 100 programs per task

• CIP Connections: 256 connections

• Non-Volatile Storage: Shipped with 1784-SD1 (1 GB SD card); supports 1784-SD2 (2 GB)

• Internal Energy Storage: Eliminates the need for external lithium batteries

• Safety Certifications: SIL 3, PLe, Cat. 4

• Power Supply Compatibility: 1769-PA2, 1769-PB2, 1769-PA4, 1769-PB4

• Weight: 0.57 kg (1.25 lbs)

Operational Features

The 1769-L30ERMS streamlines safety implementation by allowing the use of the same I/O modules for both safety and standard functions when deployed in a distributed architecture. Its dual Ethernet ports support Device Level Ring (DLR) topologies, ensuring high network resiliency and minimizing downtime in the event of a cable failure. The integrated motion capabilities enable precise synchronization of drive axes directly over EtherNet/IP, making it an ideal choice for robotic cells, packaging lines, and material handling systems where operator safety and machine throughput are equally critical.

Frequently Asked Questions

Does the 1769-L30ERMS require a separate safety partner module?No, unlike larger legacy GuardLogix systems, the 1769-L30ERMS is a self-contained safety controller that does not require a secondary safety partner module to achieve SIL 3/PLe ratings.

Can I use standard 1769 I/O modules for safety functions?Standard 1769 I/O modules can be used for non-safety functions. For safety-critical inputs and outputs, you must use Point Guard I/O or other CIP Safety-rated devices over the EtherNet/IP network.