2025-08-09 BY
IN Company News

Allen-Bradley 1756-PSCA2A ControlLogix Power Supply Module Product Description

Product Overview

The Allen-Bradley 1756-PSCA2A is a high-performance power supply module designed specifically for the ControlLogix system, a leading platform in large-scale industrial automation. As a critical component of the 1756 ControlLogix chassis ecosystem, the 1756-PSCA2A delivers stable and reliable power to the system’s processors, I/O modules, and other components, ensuring uninterrupted operation even in demanding industrial environments. Its advanced design incorporates features such as overload protection and thermal shutdown, which safeguard connected devices from electrical faults and overheating. The 1756-PSCA2A supports a wide input voltage range, making it adaptable to various global power standards, and its compact form factor allows for efficient use of space within control cabinets. Whether deployed in manufacturing plants, oil and gas refineries, or water treatment facilities, the Allen-Bradley 1756-PSCA2A provides the foundational power infrastructure needed for robust and consistent automation performance.

Technical Specifications

Parameter
Value
Product Model
1756-PSCA2A
Manufacturer
Allen-Bradley
Product Type
ControlLogix Power Supply Module
Input Voltage Range
85 – 265 VAC
Output Voltage
5 VDC, 24 VDC
Output Current (5 VDC)
20 A
Output Current (24 VDC)
2.5 A
Efficiency
Up to 85%
Operating Temperature
0 °C to 60 °C
Storage Temperature
-40 °C to 85 °C
Protection Features
Overload, overvoltage, overtemperature
Dimensions
130 mm (L) x 33 mm (W) x 160 mm (H)
Weight
0.6 kg

Key Features and Benefits

Flexible Voltage Compatibility

The Allen-Bradley 1756-PSCA2A supports a broad input voltage range of 85 – 265 VAC, enabling seamless integration into global industrial networks with varying power standards. This flexibility eliminates the need for additional voltage converters, simplifying installation in international facilities. Whether operating in regions with 110 VAC or 220 VAC mains power, the 1756-PSCA2A maintains stable output, ensuring consistent performance of ControlLogix systems across different geographic locations.
Indramat R911290396 - High-Performance Power Supply Module

Dual Output for System Versatility

With dual outputs of 5 VDC (20 A) and 24 VDC (2.5 A), the 1756-PSCA2A caters to the diverse power needs of ControlLogix components. The 5 VDC output powers sensitive electronics such as processors and communication modules, while the 24 VDC output supplies power to I/O modules, sensors, and actuators. This integrated design reduces the need for separate power supplies, streamlining system architecture and minimizing wiring complexity in control cabinets.

Comprehensive Protection Mechanisms

The 1756-PSCA2A is equipped with multiple protection features to safeguard both the power supply and connected devices. Overload protection prevents damage during excessive current draw, while overvoltage protection shields components from voltage spikes. Overtemperature shutdown activates when internal temperatures exceed safe limits, preventing thermal damage and ensuring long-term reliability. These features are critical in industrial environments where electrical disturbances and temperature fluctuations are common, reducing downtime and maintenance costs.

Efficient and Reliable Operation

Boasting an efficiency rating of up to 85%, the 1756-PSCA2A minimizes energy waste, contributing to lower operational costs. Its robust design ensures reliable performance in harsh conditions, withstanding vibration, shock, and extreme temperatures within the specified range. The module’s long service life and low failure rate make it a dependable choice for mission-critical applications, such as continuous-process manufacturing and infrastructure automation, where system uptime is paramount.
Indramat R911290396 - High-Performance Power Supply Module

Related Models

  • 1756-PSCA – A predecessor to the 1756-PSCA2A with similar functionality but slightly lower output current. It is compatible with older ControlLogix systems and can be upgraded to the 1756-PSCA2A for enhanced power capacity.
  • 1756-PSCN1 – A 24 VDC input power supply module that complements the 1756-PSCA2A in systems requiring DC input. It offers an alternative power source for ControlLogix chassis in locations with DC mains or battery-backed setups.
  • 1756-A10 – A 10-slot ControlLogix chassis designed to house the 1756-PSCA2A and other ControlLogix modules. It provides the structural framework for building scalable automation systems.
  • 1756-L73 – A ControlLogix processor module that works with the 1756-PSCA2A to form the core of an automation system. The power supply ensures stable operation of the processor, enabling reliable execution of control logic.
  • 1756-IB16I – A 16-channel digital input module powered by the 1756-PSCA2A. It interfaces with sensors and switches, feeding input data to the processor for real-time decision-making.
  • 1756-OB16E – A 16-channel digital output module that relies on the 1756-PSCA2A for power. It controls actuators and other devices based on signals from the ControlLogix processor.
  • 1756-PA75 – A redundant power supply adapter that allows two 1756-PSCA2A modules to operate in parallel, providing failover protection for critical systems where uninterrupted power is essential.
The Allen-Bradley 1756-PSCA2A comes with a one-year warranty, ensuring quality and performance. Our pre-sales team provides expert advice to help you determine if this power supply meets your system requirements, while our after-sales support offers assistance with installation, troubleshooting, and replacement. If you need a model not listed, contact us—we’re dedicated to delivering tailored solutions for your industrial automation needs.