1756-PA50 Allen‑Bradley ControlLogix Standard AC Power Supply

• Brand
  Allen‑Bradley
• Model
  1756-PA50
• Product Name
  ControlLogix Standard AC Power Supply
• Place of Origin
  Mexico
• HS Code
  85371090
• Dimensions
  140 mm × 78 mm × 145 mm
• Weight
  0.77 kg
• Operating Temperature
  0 °C to +60 °C
• Storage Temperature
  -40 °C to +85 °C
• Power Supply
  85–265 V AC
• Warranty
  12 month
• Product Status
  New and original

Backed by abundant in-stock inventory and nearly 20 years of industry experience, our company stands as a leading player in the industrial control sector.We offer an extensive range of industrial control products covering numerous models. Should you have any other requirements, please feel free to contact us, and we will respond to you promptly.

Our main brand:

1.ABB's module cards, touch screens, controllers, etc., such as PP846 touch screen, IGCT starting with 5SHY, PM starting controller, AI, DO starting input/output module, SP starting Bailey module, etc

2.GE's module card CPUs, such as VMIC starter, IS200, IS215, IS400, IS420 series, etc,

3.Emerson's card components and EPRO probes, Westinghouse 1C series, Honeywell CC series, Schneider 140 series, Envision full series, Bentley 3500 series, Rexroth motors and drives, and Foxboro small modules.

Input Characteristics

Operating input voltage range: 85～265 VAC, rated for 120 VAC and 240 VAC applications

Operating frequency: 47 Hz to 63 Hz

Maximum input rating: 91 VA / 81 W at ambient temperature of 50 °C

Backplane Output Ratings (Nominal at 50 °C Ambient)

5.1 VDC: 8 A

3.3 VDC: 2 A

1.2 VDC: 1.5 A

24 VDC: 2.5 A

Total available output power: 60 W (operating temperature range: 0 °C to 50 °C)

Derated Backplane Output Ratings (at 60 °C Ambient)

5.1 VDC: 6 A

24 VDC: 2.0 A

Total available output power: 50 W

The 1756-PA50 is a compact AC-input backplane power supply designed for the Rockwell Allen‑Bradley ControlLogix platform. It provides stable multi-channel DC power to the ControlLogix chassis backplane to energize controllers, digital and analog I/O modules, and communication adapters. Featuring a wide AC input range, space-saving form factor and clear temperature derating parameters, this power supply is extensively implemented in medium-sized industrial automation applications.

Case 1: Automotive Assembly Production Lines

Within medium-capacity automotive sub-assembly stations, the 1756-PA50 energizes local ControlLogix racks tasked with controlling conveyors, position sensors, pneumatic actuators and safety signal acquisition. Its 85~265 VAC wide input tolerance effectively handles fluctuations in factory mains power. The slim module construction conserves limited cabinet space for numerous distributed local I/O racks deployed alongside assembly lines. Reliable backplane power enables synchronous signal acquisition for robotic manipulation and assembly workflows, preventing unintended PLC module restarts triggered by power anomalies.

Case 2: Food & Beverage Processing Control Systems

The 1756-PA50 is widely installed in control cabinets for bottling lines, packaging machinery and raw material mixing processes. It powers ControlLogix racks executing flow monitoring, temperature control, sequential valve operation and batch data recording. In humid food processing workshops, its consistent multi-voltage backplane output supports stable performance of analog input modules used to measure pressure, temperature and liquid levels. Explicit thermal derating characteristics allow engineers to carry out precise power budgeting to sustain round-the-clock continuous production.

Case 3: Water Treatment & Environmental Automation

Distributed ControlLogix racks in municipal wastewater treatment facilities, water supply pumping stations and wastewater chemical dosing systems adopt the 1756-PA50 as the power source. It facilitates ongoing monitoring of water quality sensors, pump interlock logic and remote data communication over EtherNet/IP. For outdoor auxiliary control cabinets exposed to fluctuating ambient temperatures, engineers utilize the 60 °C derating ratings to mitigate overload hazards, ensuring reliable operation of chemical dosing systems, sludge processing units and blowers.

Case 4: General Machinery & Packaging Equipment

Mid-size printing equipment, auxiliary plastic injection machinery and automated packaging machines frequently adopt ControlLogix systems powered by the 1756-PA50. This unit supplies power to chassis-mounted CPUs, high-speed counter modules and motion interface modules. With a rated total output power of 60 W within 0–50 °C ambient temperature, it ideally satisfies the power requirements of medium-density I/O setups on standalone machine controllers, offering an economical power alternative while avoiding unnecessary over-sizing.

Case 5: Petrochemical Auxiliary Skid Control Packages

For compact process skids including sample conditioning assemblies and auxiliary oil & gas monitoring units, the 1756-PA50 acts as the chassis power supply for ControlLogix safety I/O and data acquisition modules. Its universal AC input removes compatibility risks arising from varying grid standards for exported skid-mounted equipment. Steady backplane power maintains the validity of vital process alarm signals and interlock logic even during temporary voltage dips.

Core Application Advantages Across All Scenarios

Slim module design streamlines cabinet arrangement for distributed rack architectures

Broad AC input range supports global industrial power supply standards

Separate multi-channel DC backplane outputs satisfy diverse power requirements of ControlLogix modules

Standardized temperature derating data streamlines system power load validation

Full compatibility with all standard ControlLogix chassis and modules, supporting seamless system expansion and equipment retrofits

Frequently Asked Questions (FAQ)

1.How fast will you reply to my inquiry?

We process all inquiries efficiently and will respond promptly once we receive your message.

2.Do you carry large inventory of industrial control parts?

We maintain massive ready stock of mainstream automation spare parts to shorten lead times.

3.Can you source discontinued or obsolete PLC & DCS modules?

Absolutely.
We specialize in sourcing hard-to-find, obsolete and out-of-production industrial control components.

4.Do you inspect goods before shipment?

Every product undergoes thorough inspection before packing and dispatch.

5.Can you ship orders worldwide?

We provide global shipping with flexible logistics for urgent and regular orders.

6.What payment methods are available?

We accept multiple secure payment options. Please contact our sales team for detailed terms