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The Allen‑Bradley 1756-L8SPXT is GuardLogix 5580 XT harsh-environment safety partner controller for 1756 ControlLogix chassis. It features conformal coating and extended temperature range for corrosive, dusty or extreme temperature industrial sites. When paired with a 5580 XT primary controller, the combined system achieves SIL 3 / PL e safety capability. This safety partner executes independent safety logic and cross-checking diagnostics against the main CPU. It is the direct replacement for obsolete 1756-L8SPK. Technical data sourced from Rockwell Automation official datasheet. Supplied by SHLY-PLC, an independent industrial automation distributor: every unit is visually inspected and functionally tested before shipment, in stock for global shipping for automation cabinet build, spare replacement and machine safety retrofit projects. Contact our team for compatibility verification and alternative in-stock GuardLogix models.
Technical parameters compiled from Rockwell Automation official datasheet.
| Technical Specifications | |
| Product type | GuardLogix 5580 XT Safety Partner Controller |
| Order Code | 1756-L8SPXT |
| Backplane Current Draw | 5mA @1.2V DC, 1.2A @5.1V DC |
| Safety Certification | Combined system SIL 3, PL e |
| Program Software | Studio 5000 Logix Designer |
| Max Analog I/O (Full System) | 4000 |
| Communication Protocols | EtherNet/IP, ControlNet, DeviceNet |
| Environmental & Physical | |
| Operating temperature | -25 °C to +70 °C |
| Storage Temperature | -40 °C ~ +85 °C |
| Relative Humidity | 5% ~ 95% RH, non-condensing |
| Vibration | 2 g, 10~500Hz |
| Shock | 30g |
| Conformal Coating | Yes (ISA-S71.04 G3) |
| Compliance Standards | CE, UKCA, ATEX, IECEx, RCM, KC; IEC 60068, IEC 61000-6-4, IEC 61000-4 series, ISA-S71.04 G3 |
The 1756-L8SPXT belongs to Allen‑Bradley GuardLogix 5580 XT family, fits in 1756 ControlLogix XT chassis. Must be paired with a ControlLogix 5580 XT main controller to implement SIL3 safety control. It replaces discontinued 1756-L8SPK. Standard non-coated counterpart:1756-L8SP. Compatible with 1756 safety I/O modules including 1756-IB16S,1756-OBV8S. This listing is provided by an independent industrial-automation distributor; brand names and part numbers are used for product identification only.
Warranty: 12-month seller warranty provided by SHLY-PLC. See our Return Policy for coverage and claims.
A: It is GuardLogix 5580 XT safety partner controller with conformal coating and extended temperature range. It pairs with ControlLogix 5580 XT main CPU to execute safety logic and achieve SIL3/PLe in harsh industrial environments via cross-comparison diagnostics.
A: Same safety logic function. 1756-L8SPXT has conformal coating, extended temperature -25~+70°C for G3 harsh environments; standard 1756-L8SP operates at 0~+60°C without coating.
A: No, it cannot operate independently. It requires matching ControlLogix 5580 XT main controller in same chassis to work as safety partner set.
1756-L8SPXT · Technical reference data · Independently supplied by SHLY-PLC
Standard International (tracked courier): delivered in 5–8 business days. In-stock items are processed within 2–4 business days. USD 25 flat rate on orders of $500 or less; free on orders over $500.
Express (DHL Express / FedEx International): upgraded expedited delivery in 2–4 business days. The Express surcharge is calculated at checkout based on destination and order weight.
Non-Stock / On-Order items ship on request: dispatch time is confirmed before your order — see our Shipping Policy. Remote-area and overweight surcharges, where applicable, are shown before checkout.
Every product is covered by a 12-month seller warranty provided by SHLY-PLC, effective from the date of delivery, against defects in materials and workmanship under normal use. Manufacturer or factory warranty service is not applicable, and extended warranty packages are not provided.
This warranty does not cover damage from misuse, improper installation, power surges, neglect, unauthorized repair, or normal wear and tear. See our Return Policy for warranty-claim instructions.
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