Allen Bradley 1756-L83ES GuardLogix 5580 Safety CPU

Product Overview

The Allen-Bradley 1756-L83ES is a GuardLogix 5580 safety controller for the ControlLogix platform. It combines 10 MB standard memory with 5 MB safety memory in a single chassis slot, delivering SIL 3 / PLe safety-rated control with integrated EtherNet/IP communication.

Key Specs

• Standard memory: 10 MB
• Safety memory: 5 MB
• EtherNet/IP nodes: Up to 250 devices
• Ethernet port: 1 Gbps embedded RJ45
• USB port: USB 2.0 (12 Mbps) for programming
• Tasks: 31 standard + 1 safety task, 1000 programs per task
• Safety rating: SIL 3, PLe, Category 4 (with 1756-L8SP partner)

Why Choose This

• Single-environment programming for standard and safety logic in Studio 5000
• 1 Gbps embedded Ethernet eliminates separate communication modules
• TÜV-certified to IEC 62443-4-2 control system security standard
• Controller-based change detection and digitally-signed firmware

Common Questions

• Does it require a safety partner module? Yes, the 1756-L8SP must be installed immediately to the right for SIL 3 applications.
• What is the maximum I/O? 128,000 digital and 4000 analog I/O points.
• Is controller redundancy supported? No, GuardLogix 5580 controllers do not support redundancy.

Mounting Steps

1. Install the controller in any slot of a Series B or C 1756 chassis.
2. Install the 1756-L8SP safety partner in the slot immediately to the right.
3. Connect the embedded Ethernet port to the EtherNet/IP network.
4. Verify the Energy Storage Module (ESM) is fully seated.
5. Configure and download the safety application in Studio 5000 Logix Designer.

Buying Advice

• Select 1756-L83ES for medium to large safety applications requiring 250 EtherNet/IP nodes.
• For smaller applications, the 1756-L82ES offers 5 MB standard / 2.5 MB safety memory.
• Add the K suffix (1756-L83ESK) for conformal coating in harsh environments.