The 1756-L84ES GuardLogix 5580 Safety Controller from Rockwell Automation is a high-end integrated safety PLC/PAC designed for complex industrial systems that require large memory capacity, SIL 3 / PLe safety performance, embedded Ethernet communication, and advanced system scalability.
It is one of the higher-tier controllers in the GuardLogix 5580 family, widely used in large-scale smart manufacturing, robotics safety systems, process industries, and high-density automation networks where both safety integrity and computing power are critical.
Technical Specifications (Including Size & Weight)
| Parameter | Specification |
|---|---|
| Model | 1756-L84ES |
| Series | ControlLogix / GuardLogix 5580 |
| Processor Type | Safety + Standard Integrated CPU |
| Standard Memory | 20 MB |
| Safety Memory | 6 MB |
| I/O Capacity | Up to 128,000 digital / 4,000 analog |
| Controller Tasks | Up to 32 tasks |
| Programs per Task | Up to 1000 programs |
| Communication Ports | 1 × USB 2.0, 1 × Embedded EtherNet/IP |
| Ethernet Speed | 10/100/1000 Mbps (Gigabit) |
| Device Capacity | Up to ~250 EtherNet/IP devices |
| Motion Control | Supported (system-dependent) |
| Display | 4-character alphanumeric status display |
| Security Features | Signed firmware, role-based access control |
| Nonvolatile Memory | SD card support (typical up to 2 GB) |
| Backplane Current (5.1V DC) | ~1.20 A |
| Power Dissipation | ~6 W |
| Programming Software | Studio 5000 Logix Designer |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5%–95% non-condensing |
| Weight | ~2.1 kg (shipping weight typical) |
Physical Dimensions
- Size (H × W × D): 145.2 × 182 × 136.6 mm
This compact single-slot architecture integrates high memory and safety processing while maintaining full compatibility with ControlLogix chassis systems.
Recommended Related Models
For system scalability and safety expansion, the L84ES is commonly paired with:
- 1756-L81ES / L82ES / L83ES GuardLogix 5580 CPUs
- 1756-L8SP safety partner modules
- 1756-IB16S / 1756-OB16S safety I/O modules
- 1756-IB16 / 1756-OB16 standard I/O modules
- 1756-IF8 / 1756-OF8 analog I/O modules
Popular Allen-Bradley ControlLogix & GuardLogix Models
Within the same ecosystem, widely used controllers include:
- 1756-L71 / L72 / L73 ControlLogix 5570 CPUs
- 1756-L73S GuardLogix safety controllers
- 1756-L81E / L82E / L83E ControlLogix 5580 CPUs
- 1756-L81ES / L82ES / L83ES / L84ES GuardLogix safety CPUs
- 1756-L8SP safety partner modules
These controllers support scalable architectures from machine-level automation to enterprise-grade safety systems.
