Allen-Bradley 1756-L950TPSXT Process XT Controller with Redundancy Support

Product Description

The Allen-Bradley 1756-L950TPSXT functions as a high-performance processing unit within the ControlLogix 5590 family, specifically optimized for the Process XT (Extended Temperature) hardware line. This 100% brand-new, original controller manages complex automation tasks in locations where standard hardware would fail. By combining advanced logic execution with hardened physical protection, the 1756-L950TPSXT ensures that critical infrastructure—such as mining operations and offshore rigs—remains operational under the most severe environmental stressors.

Technical Specifications

The 1756-L950TPSXT utilizes a specialized XT-series architecture to maintain deterministic performance regardless of external thermal or chemical interference.

• Product Series: ControlLogix 5590 Process XT
• Model Number: 1756-L950TPSXT
• Operating Voltage: 5.1 V DC (Backplane Power)
• Environmental Protection: Conformal coating for corrosive resistance
• Redundancy: Integrated support for high-availability configurations
• Memory Capacity: Optimized for large-scale process instruction sets
• Operating Temperature Range: Extended XT range (-25 °C to +70 °C typical)
• Weight: 0.9 kg
• Dimensions: 3.5 x 13 x 14.5 cm

Engineering Advantages

The 1756-L950TPSXT provides several mechanical and logic-based benefits that empower engineers to secure their most demanding process loops:

• Superior Atmospheric Resilience: This controller features a hardened exterior and conformal-coated internal circuitry. Consequently, the module repels moisture, salt spray, and corrosive gases, which effectively prevents the hardware degradation often seen in oil and gas or wastewater applications.
• Native Redundancy Integration: Integrated redundancy logic allows the 1756-L950TPSXT to pair with a secondary controller seamlessly. If a hardware fault occurs, the system initiates a bumpless transfer to the standby unit, ensuring that the process continues without interruption or data loss.
• Vibration and Shock Resistance: Rockwell Automation engineered the XT line to withstand the mechanical stresses typical of heavy mining machinery and vibrating industrial platforms. Therefore, the controller maintains consistent electrical contact and internal component integrity even in high-impact zones.
• Unified ControlLogix Framework: Although this unit features enhanced physical protection, it maintains full compatibility with the standard 1756 I/O and communication modules. This allows engineers to implement extreme-environment protection without redesigning their existing ControlLogix architecture or software logic.

FAQs

• What makes the “XT” version different from a standard 1756-L950 controller?The “XT” designation signifies Extended Temperature and environmental hardening. While the logic capabilities remain similar, the 1756-L950TPSXT includes specialized coatings and components that allow it to operate in wider temperature bands and more corrosive environments than standard models.
• Does this controller require a specific chassis?Yes, for full environmental protection, you should install the 1756-L950TPSXT in an Allen-Bradley XT-series chassis. Using an XT chassis ensures that the entire system meets the specified resistance ratings for temperature and corrosion.
• How does the redundancy feature improve system uptime?The controller supports a 1:1 redundancy ratio. By using a redundancy module and a secondary 1756-L950TPSXT, the system synchronizes memory in real-time. This ensures that the backup unit takes control instantly if the primary unit experiences a power or hardware failure.
• Can I use standard 1756 communication modules with this XT controller?Yes, the 1756-L950TPSXT communicates with any standard 1756-series module. However, to maintain the environmental integrity of the entire cabinet, engineers typically pair it with other XT-rated communication and I/O modules.