Excellent PLC
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 cm |
| 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.
