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Allen Bradley 1756-PA75R ControlLogix Redundant Power Supply
- Product Details
- FAQs
- Related
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- Packing & Delivery
- Product Ratings
Product Introduction
The Allen Bradley 1756-PA75R ControlLogix Redundant Power Supply is engineered for high-availability ControlLogix systems that require uninterrupted backplane power. It is specifically designed for redundant configurations, allowing two power supplies to operate together to eliminate single points of failure within the control architecture.
This module converts 120–240 VAC input power into regulated DC backplane power and is installed in redundant chassis configurations using a compatible redundancy adapter. In critical industrial environments, where power interruptions can result in production loss or safety risks, the 1756-PA75R provides an additional layer of operational security.
It is widely applied in petrochemical plants, power generation facilities, transportation infrastructure, and large-scale manufacturing systems where system uptime is essential.
Product Specifications
| Parameter | Specification |
|---|---|
| Product Model | 1756-PA75R |
| Series | ControlLogix |
| Power Supply Type | Redundant AC Power Supply |
| Input Voltage | 120–240 VAC |
| Input Voltage Range | Industrial wide-range AC input |
| Frequency | 47–63 Hz |
| Input Phase | Single-phase |
| Redundancy Capability | Yes (requires redundancy adapter) |
| Backplane Output | Regulated DC power for ControlLogix chassis |
| Protection Features | Overcurrent and thermal protection |
| Isolation | Electrical isolation between input and backplane |
| Cooling Method | Convection cooling |
| Installation Configuration | Redundant chassis architecture |
| Dimensions | 175 x 145 x 137 mm |
| Weight | 1.45 kg |
Applications
• Critical Process Industries
Used in oil & gas and petrochemical systems where continuous PLC operation is mandatory.
• Power Generation Facilities
Ensures uninterrupted control system operation for turbines and plant monitoring equipment.
• High-Reliability Manufacturing Lines
Supports production environments where downtime leads to significant operational loss.
• Infrastructure and Utility Control Systems
Installed in water treatment, energy distribution, and transportation automation panels.
• Redundant PLC Architectures
Designed specifically for systems requiring fault-tolerant power configurations.
Advantages
• True Redundant Architecture Support
Eliminates single points of failure by allowing parallel power supply operation.
• Automatic Failover Functionality
If one unit loses input power or fails, the secondary supply continues operating without interruption.
• Stable Backplane Power Delivery
Maintains consistent DC regulation to prevent processor resets or communication interruptions.
• Integrated Protection Design
Includes internal overcurrent limiting and thermal shutdown mechanisms to protect the system.
• Optimized for ControlLogix Systems
Designed specifically for seamless integration into redundant ControlLogix chassis configurations.
• Industrial-Grade Construction
Suitable for demanding environments with vibration and temperature variation.
FAQ
-
What is the primary function of the 1756-PA75R?
It provides redundant internal power to ensure uninterrupted operation of a ControlLogix chassis. -
How does redundancy improve system reliability?
By using two power supplies in parallel, the system can continue operating if one unit fails. -
Is special hardware required to enable redundancy?
Yes, a compatible redundancy adapter and chassis configuration are necessary. -
Can the module operate as a standalone power supply?
It is designed primarily for redundant systems and should be used accordingly. -
Does redundancy switching require manual intervention?
No, failover occurs automatically when properly configured. -
Is this power supply suitable for safety-critical systems?
It is commonly used in applications where high availability is required. -
What installation factors are important for redundancy systems?
Proper grounding, load balancing, and correct adapter installation are essential. -
Does the unit support continuous industrial operation?
Yes, it is built for continuous use in industrial environments. -
Is maintenance required for redundant power supplies?
Routine inspection and ensuring adequate ventilation are recommended. -
Can this module be used in system upgrade projects?
Yes, it is often implemented when upgrading from non-redundant to redundant architectures.
Related Models
| Model | Description | Input Type | Configuration |
|---|---|---|---|
| 1756-PA75 | High Capacity AC Power Supply | AC | Standard |
| 1756-PA75K | 75W AC Power Supply | AC | Standard |
| 1756-PA72 | Standard AC Power Supply | AC | Standard |
| 1756-PB75R | Redundant DC Power Supply | DC | Redundant |
| 1756-PB75 | High Capacity DC Power Supply | DC | Standard |
| 1756-PSCA2 | Redundancy Adapter Module | N/A | Redundancy support |
Popular Models
| Model | Product Type | Key Feature |
|---|---|---|
| 1756-L81E | ControlLogix Controller | Integrated Ethernet |
| 1756-L85E | High-Performance Controller | Advanced processing capability |
| 1756-EN2TR | Redundant Ethernet Module | Network redundancy |
| 1756-IB16 | Digital Input Module | 16-point input |
| 1756-OB32 | Digital Output Module | High-density outputs |
| 1756-IF16 | 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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