The 1756-L73S GuardLogix 5570 Safety Processor Module from Rockwell Automation is a high-performance safety-integrated PLC designed for industrial applications that require both standard control logic and certified functional safety execution within a single controller platform.
As part of the GuardLogix 5570 family, the L73S is widely used in safety-critical environments such as automotive production, robotics, and process industries. It combines deterministic control performance with SIL-rated safety functionality, making it a core component in modern safety automation architectures.
Technical Specifications (Including Size & Weight)
| Parameter | Specification |
|---|---|
| Model | 1756-L73S |
| Series | ControlLogix / GuardLogix 5570 |
| Processor Type | Safety + Standard Integrated CPU |
| Standard User Memory | 8 MB |
| Safety Memory | 4 MB |
| I/O Memory | ~0.98 MB |
| Nonvolatile Memory | 1 GB SD card (standard) |
| Programming Port | USB 2.0 |
| Maximum I/O Capacity | Up to 128,000 digital / 4,000 analog |
| Motion Support | Up to 100 axes |
| Controller Tasks | Up to 31 standard + 1 safety task |
| Communication | Via 1756 modular network modules (EtherNet/IP, ControlNet, DeviceNet) |
| Backplane Current (5.1V DC) | ~0.8 A |
| Power Dissipation | ~2.5–3 W |
| Programming Software | RSLogix 5000 / Studio 5000 GuardLogix |
| Battery / Energy Storage | 1756-ESMCAP module |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5%–95% non-condensing |
| Weight | ~0.26–0.45 kg |
Physical Dimensions
- Size (H × W × D): 127 × 178 × 102 mm
This form factor ensures full compatibility with standard ControlLogix chassis systems while supporting integrated safety and high-performance control functions.
Recommended Related Models
For system expansion or modernization, the 1756-L73S is commonly paired with:
- 1756-L71S / 1756-L72S GuardLogix CPUs
- 1756-EN2T EtherNet/IP communication module
- 1756-ENBT Ethernet bridge module
- 1756-RM safety redundancy module (system-dependent designs)
- 1756-IB16 / 1756-OB16 digital I/O modules
Popular Allen-Bradley ControlLogix & GuardLogix Models
Within the same ecosystem, widely deployed controllers include:
- 1756-L71 / L72 / L73 standard ControlLogix CPUs
- 1756-L71S / L72S / L73S GuardLogix safety CPUs
- 1756-L7SP safety partner modules
- 1756-EN2T high-speed Ethernet communication modules
These controllers form the backbone of integrated safety and control systems across global industrial automation environments.
