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Allen Bradley 1756-PA75 ControlLogix AC Power Supply
- Product Details
- FAQs
- Related
- Contact Us
- Packing & Delivery
- Product Ratings
Product Introduction
The Allen Bradley 1756-PA75 ControlLogix AC Power Supply is a high-capacity chassis power module developed for ControlLogix automation systems. It is designed to convert industrial AC input power into regulated DC power required by the ControlLogix backplane. Installed on the left side of the chassis, it serves as the primary internal power source for processors, communication modules, motion modules, and I/O cards.
Compared to standard AC power supplies, the 1756-PA75 is typically selected for larger and more demanding ControlLogix configurations where higher power availability and load stability are required. It is widely used in large-scale automation systems, process industries, and infrastructure applications where continuous and stable control power is essential.
The unit integrates seamlessly into the ControlLogix architecture, ensuring mechanical compatibility and electrical stability without additional configuration.
Product Specifications
| Parameter | Specification |
|---|---|
| Product Model | 1756-PA75 |
| Series | ControlLogix |
| Input Voltage | 120/240 VAC |
| Input Voltage Range | Wide industrial AC range |
| Frequency | 47–63 Hz |
| Input Phase | Single-phase |
| Backplane Output | Regulated DC power for ControlLogix chassis |
| Power Capacity | High-capacity AC power supply |
| Protection Features | Overcurrent protection, thermal shutdown |
| Isolation | Input-to-backplane electrical isolation |
| Mounting Position | Left side of chassis |
| Operating Temperature | Industrial rated temperature range |
| Certifications | Industrial compliance approvals |
| Dimensions | 140 x 112 x 145 mm |
| Weight | 0.95 kg |
Applications
• Large-Scale Automation Systems
Supplies stable backplane power for fully populated ControlLogix racks in manufacturing plants.
• Process Control Installations
Used in oil & gas, petrochemical, and power generation systems where continuous PLC operation is critical.
• High-Density I/O Systems
Supports racks with multiple analog, digital, and communication modules requiring higher internal power.
• Motion Control Architectures
Provides dependable internal supply for control processors and motion modules.
• Centralized Industrial Control Panels
Integrated into main PLC cabinets supporting multi-chassis configurations.
Advantages
• Higher Power Capacity
Designed to support larger ControlLogix configurations compared to standard AC power modules.
• Wide AC Input Compatibility
Operates across common industrial AC voltage systems without manual switching.
• Stable Backplane Regulation
Maintains consistent internal DC supply, reducing unexpected controller interruptions.
• Integrated Protection Mechanisms
Features overcurrent limitation and thermal protection for enhanced system safety.
• Platform-Specific Engineering
Fully optimized for ControlLogix chassis architecture, ensuring electrical compatibility.
• Compact Mechanical Design
Maintains the same footprint as other ControlLogix power supplies, simplifying cabinet layout planning.
FAQ
-
What differentiates the 1756-PA75 from other AC power supplies in the series?
It is typically selected for applications requiring higher internal power capacity within the ControlLogix platform. -
Is the module compatible with all standard ControlLogix chassis sizes?
Yes, it is designed for standard ControlLogix chassis installations. -
Can this power supply support systems with multiple communication modules?
Yes, it is suitable for configurations that include several communication and I/O modules. -
Does the unit require configuration before startup?
No configuration is required. It operates automatically once installed. -
How does it contribute to overall PLC stability?
By delivering consistent backplane power, it reduces the risk of controller resets and module instability. -
Is it suitable for high-demand industrial environments?
Yes, it is designed for use in demanding industrial applications. -
Can it be integrated into redundant control architectures?
It can be used in redundancy-supported systems when paired with compatible modules. -
What installation practices ensure reliable operation?
Proper grounding, secure mounting, and adequate ventilation are recommended. -
Does it require regular maintenance?
Routine inspection for dust accumulation and secure electrical connections is generally sufficient. -
Is it appropriate for retrofit projects?
Yes, it is commonly used in both new installations and system upgrades.
Related Models
| Model | Description | Input Type | Capacity Level |
|---|---|---|---|
| 1756-PA72 | AC Power Supply | AC | Standard |
| 1756-PB75 | High Capacity DC Power Supply | DC | High |
| 1756-PB72 | DC Power Supply | DC | Standard |
| 1756-PA50 | Standard AC Power Supply | AC | Medium |
| 1756-PB50 | Standard DC Power Supply | DC | Medium |
| 1756-PSCA2 | Chassis Adapter for Redundancy | N/A | Redundant systems |
Popular Models
| Model | Product Type | Key Feature |
|---|---|---|
| 1756-L81E | ControlLogix Controller | Integrated Ethernet |
| 1756-L85E | High-Performance Controller | Large memory and speed |
| 1756-EN2T | Ethernet Module | EtherNet/IP communication |
| 1756-IB16 | Digital Input Module | 16-point input |
| 1756-OB16E | Digital Output Module | Electronic protection |
| 1756-IF8 | Analog Input Module | Multi-channel analog input |
| Company Information | ||||||||
| [email protected] | ||||||||
| Mobile | +8613666033393 | |||||||
| +8613666033393 | ||||||||
| 13666033393 | ||||||||
| Add | Room 1004, No. 62 Xiangxiu Li, Siming District, Xiamen City, Fujian Province, China | |||||||
Excellent PLC Co., Ltd. has a large number of brand new and original PLC and DCS spare parts, with more than 60 cooperative countries. All products are guaranteed for 1 year and delivered to you by high-quality express. We are committed to using the best products and the most favorable prices to meet the needs and friendship of our customers. We have won the trust of thousands of customers, including these excellent customers.
As for the delivery time, when we receive your order requirements, we will arrange for warehouse personnel to test and verify the products. After you place the order, we will send it to you within 24 hours.
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