The 1756-L7SP GuardLogix Safety Partner Module from Rockwell Automation is a dedicated safety companion controller used in GuardLogix architectures to achieve SIL 3 / PLe-rated functional safety systems.
Unlike standard ControlLogix CPUs, the L7SP does not execute standalone logic. Instead, it works as a redundant safety partner paired with primary GuardLogix controllers such as the 1756-L71S, L72S, or L73S, forming a 1oo2 (one-out-of-two) safety architecture. This design ensures high-integrity safety execution in critical industrial environments.
Technical Specifications (Including Size & Weight)
| Parameter | Specification |
|---|---|
| Model | 1756-L7SP |
| Series | GuardLogix Safety Partner |
| Module Type | Safety Partner (No standalone control logic) |
| Supported Controllers | 1756-L71S / L72S / L73S |
| Safety Rating | SIL 3 / PLe system architecture |
| Memory | Mirrors primary controller memory |
| Slot Requirement | 2-slot width |
| Backplane Current (5.1V DC) | ~800 mA |
| Backplane Current (1.2V DC) | ~5 mA |
| Power Dissipation | ~2.5 W |
| Isolation Voltage | 30V continuous |
| Communication | USB + backplane synchronization |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5%–95% non-condensing |
| Weight | ~0.25–0.26 kg |
Physical Dimensions
- Size (H × W × D): 197 × 191 × 38 mm
This dual-slot design is required because the L7SP physically pairs with the main safety CPU to maintain synchronized redundant safety processing.
Recommended Related Models
The L7SP is always used with compatible GuardLogix CPUs and system modules such as:
- 1756-L71S / 1756-L72S / 1756-L73S safety controllers
- 1756-EN2T EtherNet/IP communication module
- 1756-IB16 / 1756-OB16 digital I/O modules
- 1756-RM redundancy module (system-dependent architectures)
- 1756-PA75 / PB75 power supply modules
Popular Allen-Bradley GuardLogix Models
Within the same safety ecosystem, commonly used modules include:
- 1756-L7SP safety partner module
- 1756-L71S / L72S / L73S GuardLogix CPUs
- 1756-L73SXT rugged safety controller variants
- 1756-EN2T Ethernet communication modules
- 1756-IB32S / OB32S safety I/O modules
These components form the backbone of high-integrity industrial safety systems across global industries.
