Purchase now: Allen-Bradley 1756-LSP GuardLogix Safety Partner
Atlantechdrives provides you the 1756-LSP, the dedicated safety partner module for the legacy ControlLogix 5560 (L6) series controllers. This module is the cornerstone of SIL3/PLe safety systems for older GuardLogix architectures, providing the necessary redundancy for safety-critical applications such as emergency stops and press control.
- Series: ControlLogix 5560 (L6) Partner
- Safety Level: SIL3/PLe (paired with L6xS)
- Backplane Current: 1.2A @ 5.1V DC
- Module Width: Single Slot
The Critical Function of the Legacy 1756-LSP
The 1756-LSP is a co-processor that ensures the integrity of safety operations in the GuardLogix 5560 platform. When paired with a primary safety controller (like the 1756-L61S, L62S, or L63S), the 1756-LSP performs redundant calculations. This allows the system to detect internal hardware failures and shut down safely before a dangerous condition occurs. For industries maintaining legacy hardware, the 1756-LSP is a vital spare part to ensure ongoing compliance with safety regulations without the need for a full system migration.
Installation Advice for Legacy Safety Systems
The 1756-LSP must be placed in the slot directly to the right of the primary L6 series safety controller. Ensure that the 1756-BA2 battery in the primary controller is fresh, as the 1756-LSP relies on the primary CPU for its program synchronization upon power-up. When replacing a 1756-LSP, always verify the firmware compatibility using RSLogix 5000. It is common for these older modules to require a specific minor revision flash to match the existing primary processor.
Maintenance and Lifecycle Tips
Since the 1756-LSP is part of an older product line, thermal management is key. These modules draw significant current from the 5V backplane rail and can run hot in densely packed chassis. Ensure adequate spacing or active cooling in the enclosure. Periodically inspect the module’s LEDs: a steady green ‘OK’ light is the goal. A flashing red ‘OK’ light often indicates a firmware mismatch or a failure in the 1oo2 voting logic, requiring immediate technical review.
FAQs
Q: Can the 1756-LSP be used with an L7 controller?
A: No, the 1756-LSP is only compatible with the L6 (5560) series safety CPUs.
Q: Does the 1756-LSP have its own memory?
A: It uses internal memory to execute the safety partner logic, but the user program is stored in the primary CPU.
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The 1756-LSP series partner module is technically required for redundant configurations using the ControlLogix 5580 CPU.
