Allen-Bradley 1756-LSP GuardLogix 5560 Safety Partner Module

SKU 1756-LSP

In stock

12-month warranty
Free returns within 30 days

Manufacturer: Allen-Bradley
Product No.: 1756-LSP
Country of origin:United States
Product Type: Safety Partner Module
Barcode: 8537101190
Payment: T/T, Western Union
Weight: 340g
Dimensions: 27 x 17 x 7 cm
Shipping port: Xiamen
Warranty: 12 months

Description

The Allen-Bradley 1756-LSP serves as a dedicated, hardware-isolated redundant co-processor within safety-instrumented systems to execute multi-channel diagnostic and lockstep safety verification logic. Operating as a specialized safety partner module paired with a primary controller, this unit establishes an isolated secondary execution environment to safely handle safety-related functions up to and including SIL 3 and Performance Level e requirements. The device contains no localized user memory for standard operations; instead, its configuration parameters, clock operations, and safety memory structures are bound to and managed by the corresponding master unit.

Features

1-Slot Co-Processing Footprint: Occupies a single slot immediately adjacent to the primary controller, forming a two-slot processing pair within the chassis backplane.
Dynamic Safety Memory Allocation: Safety allocation corresponds directly to the paired master unit, providing 1 MB when paired with 1756-L61S or 1756-L62S, and 3.75 MB when linked with a 1756-L63S.
High Connection Density: Manages up to 250 data connections for handling complex industrial safety interlock distributions.
Integrated Diagnostics: Built-in LED status indicators provide immediate local visual confirmation of execution states, errors, and sync conditions.
Nonvolatile Flash Backup: Ships complete with a pre-installed CompactFlash card to ensure secure storage of firmware images and operating parameters.

Applications

SIL 3 and Performance Level e (PL e) emergency shutdown loops in high-risk industrial fields.
Lockstep co-processing pairs within automated burner management systems (BMS) and pressing cells.
Fail-safe interlock handling in manufacturing setups requiring strict isolation from standard control logic execution paths.

Technical Specifications

Parameter	Specification
Manufacturer	Allen-Bradley / Rockwell Automation
Model Part Number	1756-LSP
Module Type	Safety Partner Module
Series	GuardLogix 5560
Compatible Primary Controllers	1756-L61S, 1756-L62S, 1756-L63S
Supported Connections	250
User / Standard Memory	N/A (None)
Current Draw @ 5.1V DC	1200 mA
Current Draw @ 24V DC	14 mA
Power Dissipation	3.5 W
Thermal Dissipation	11.9 BTU/hr
Isolation Voltage	30V Continuous (Basic Insulation, Type-tested from RS-232 port-to-system at 720V DC for 60 seconds)
Local Serial Interface	1 x RS-232 port
Backup Battery Element	1756-BA2 (0.50 g lithium assembly)
Chassis Slot Width Allocation	1 slot (Requires adjacent slot for primary module; 2 slots total for operation)
Chassis Compatibility	1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17
Power Supply Compatibility	1756-PA50, 1756-PA72, 1756-PA75, 1756-PB50, 1756-PB72, 1756-PB75
Enclosure Class	None (Open-Style)
Operating Temperature Range	0 Celsius to 60 Celsius
Non-Operating Temperature	-40 Celsius to 85 Celsius
Relative Environmental Humidity	5-95% non-condensing
Mechanical Shock (Operating)	30 g
Mechanical Shock (Non-Operating)	50 g
Vibration Stress Tolerance	2 g at 10-500 Hz
Shipping Weight (Calculated)	0.75 lbs (0.34 kg)
Physical Dimensions (Calculated)	27 x 17 x 7 cm (10.63 x 6.69 x 2.76 in.)

Alternative Models & Compatibility

The 1756-LSP safety partner is structurally locked to the GuardLogix 5560 architecture. It functions solely when paired alongside a 1756-L61S, 1756-L62S, or 1756-L63S safety controller. Attempting to link this safety module with standard ControlLogix non-safety processors or newer ControlLogix 5570/5580 systems will result in backplane verification errors and halt CPU configuration loading.

Application Pitfalls & Engineering Notes

A major engineering pitfall occurs when calculating available workspace inside open enclosures. If the safety partner is not placed in the slot directly to the right of its primary controller, the pair cannot satisfy structural SIL 3 requirements, causing a total breakdown of safety loop integrity. Furthermore, because this card relies completely on the master controller for communication links and configuration parameters, its onboard RS-232 port cannot be independently utilized for broad network mapping or logic modification. Ensure the onboard 1756-BA2 lithium battery cell is monitored regularly; low energy levels can corrupt clock operations during complete system power blackouts.

Installation Guidelines

CRITICAL WARNING: De-energize and lock out all main backplane paths and external auxiliary supply voltages before mounting or extracting the co-processor hardware. Handling module installation steps while the rack contains active residual voltage risks triggering unexpected backplane noise spikes, communication drops on adjacent nodes, or component degradation.

1

Verify the position of the primary master controller (1756-L61S, -L62S, or -L63S) within the selected standard 1756 chassis rack.

2

Clear the unmanaged slot situated immediately to the right of that primary unit to allow proper mechanical alignment for SIL 3 tracking.

3

Align the circuit card tracks of the safety partner module with the plastic guides of the intended empty slot.

4

Slide the unit smoothly backward into the slot until the upper and lower mechanical clips seat flush and snap lock onto the chassis rim.

5

Restore power to the chassis and examine the forward LED cluster to confirm initialization and paired connection handshakes with the primary processor.

FAQ

Does this safety partner module possess independent memory for user application logic?

No. The module contains no independent user memory for standard operations. It functions strictly as a redundant co-processor whose safety memory allocation depends on the memory footprint of the paired primary unit.

Can this module be placed in any open slot inside a ControlLogix chassis?

To satisfy SIL 3 safety compliance, the module must be mounted in the slot located immediately to the right of the primary safety controller.

What is the memory size allocation when pairing this unit with a 1756-L63S master processor?

When integrated with a 1756-L63S primary controller, the safety partner matches it by providing a safety memory structure of 3.75 MB.

What replacement battery type is required for this co-processor unit?

The module requires a 1756-BA2 lithium battery assembly, which contains approximately 0.50 grams of lithium to maintain clock and internal backup parameters.

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Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

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TECHNICAL SPECIFICATIONS

Color pattern	Black
Country of origin	United States
Power source	DC Power Battery-powered