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The Allen Bradley 1756-PA75 is a high-efficiency industrial AC power supply module designed for large-scale automation control systems within the ControlLogix platform. This model is widely used in modern industrial environments that require stable power distribution, long-term continuous operation, and high-performance PLC system support.
The 1756-PA75 is engineered to provide reliable backplane power for ControlLogix chassis systems. It supplies stable operating power to controllers, communication modules, I/O modules, motion modules, and various industrial network components installed in the chassis.
Compared with standard industrial power modules, the 1756-PA75 offers enhanced power efficiency, improved system stability, stronger industrial durability, and better compatibility with complex automation architectures. It is especially suitable for medium and large industrial automation projects that demand uninterrupted operation and high reliability.
This module is commonly installed in industries such as:
Its industrial-grade construction allows stable operation under harsh conditions including electrical noise, temperature fluctuations, vibration, and continuous heavy-load operation.
The 1756-PA75 belongs to the Allen Bradley industrial automation product family. The brand is recognized worldwide for advanced industrial automation technologies and highly reliable control systems.
Its industrial products are widely applied in:
The brand has built a strong reputation for:
Its products are widely trusted in mission-critical industrial control applications.
The 1756-PA75 is part of the ControlLogix series, a modular PLC automation platform designed for high-performance industrial control applications.
The ControlLogix platform supports:
The series is highly flexible and scalable, allowing users to customize control systems according to operational requirements.
The platform supports multiple module types, including:
Within the system architecture, the 1756-PA75 acts as one of the most important infrastructure modules by providing stable and reliable system power.
| Parameter Item | Specification |
|---|---|
| Model | 1756-PA75 |
| Product Type | AC Power Supply Module |
| Series | ControlLogix |
| Input Voltage Range | 85–265V AC |
| Input Frequency | 47–63 Hz |
| Maximum Input Power | 240 W |
| Backplane Current at 1.2V | 13 A |
| Backplane Current at 3.3V | 5 A |
| Isolation Voltage | 250V Continuous |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Relative Humidity | 5%–95% Non-condensing |
| Cooling Method | Natural Air Convection |
| Installation Method | Chassis-mounted |
| Compatible Chassis | 1756 Series Chassis |
| EMC Protection | Industrial-grade EMC Protection |
| Certification | CE, UL, CSA |
| Dimensions | Approximately 14.8 × 14.2 × 13.5 cm |
| Weight kg( ) | Approximately 1.58 kg |
The 1756-PA75 delivers stable and highly efficient power distribution to the ControlLogix backplane system.
It supports reliable operation of multiple installed modules simultaneously without compromising system stability.
This is particularly important in large automation systems containing numerous communication and I/O devices.
The module is designed for long-term industrial operation in demanding environments.
It can maintain stable performance under conditions such as:
Its industrial-grade internal architecture improves operational reliability and reduces unexpected shutdown risks.
The 1756-PA75 is designed with improved power regulation capability to ensure stable voltage delivery across the chassis backplane.
Stable system power helps improve controller reliability and communication performance throughout the automation network.
The modular structure of the ControlLogix platform simplifies:
Users can easily modify or expand automation systems without redesigning the complete control infrastructure.
Industrial facilities often contain high-interference equipment such as:
The 1756-PA75 features strong EMC resistance capability to maintain stable system operation in electrically noisy industrial environments.
The module is built using high-quality industrial components that support long-term continuous operation with minimal maintenance requirements.
This reduces total operating cost over the product lifecycle.
The 1756-PA75 is widely used in automotive manufacturing systems including:
Its stable operation supports continuous high-volume production.
Semiconductor production environments require extremely reliable automation systems.
The module supports:
Its high stability helps maintain process consistency and manufacturing accuracy.
The 1756-PA75 is suitable for demanding energy industry environments such as:
Its durability and reliability are well suited for critical industrial infrastructure.
Food processing factories rely heavily on stable automation systems for continuous production.
Applications include:
The module helps reduce production downtime and improve operational efficiency.
The module is frequently installed in:
Stable automation operation is critical in these applications.
The 1756-PA75 provides higher operational efficiency compared with earlier generation power modules.
This helps reduce overall system energy consumption.
Stable and reliable power distribution minimizes PLC shutdown risks caused by unstable industrial power conditions.
This improves overall production continuity.
The module supports future system expansion by allowing users to add additional ControlLogix modules as production requirements increase.
The module performs reliably in harsh industrial environments and supports long-term operation under heavy workloads.
The 1756-PA75 integrates efficiently with advanced industrial communication systems and distributed automation architectures.
| Model | Product Type | Input Voltage | Main Feature | Dimensions | Weight kg( ) |
|---|---|---|---|---|---|
| 1756-PA75 | AC Power Supply Module | 85–265V AC | High-efficiency AC power supply | 14.8 × 14.2 × 13.5 cm | 1.58 kg |
| 1756-PB75 | DC Power Supply Module | 18–32V DC | High-performance DC input design | 14.8 × 14.2 × 13.5 cm | 1.55 kg |
| 1756-PA72 | Standard AC Power Supply | 85–265V AC | Standard ControlLogix power module | 14.5 × 14 × 13.2 cm | 1.45 kg |
| 1756-PB72 | Standard DC Power Supply | 18–32V DC | Standard DC industrial power supply | 14.5 × 14 × 13.2 cm | 1.40 kg |
| 1756-PSCA2 | Redundancy Adapter Module | N/A | Redundant chassis support | 13 × 12 × 6 cm | 0.85 kg |
| 1756-A17 | 17-slot Chassis | N/A | Large-scale module installation | 80 × 25 × 14 cm | 7.20 kg |
| Model | Product Type | Main Function | Communication Support | Dimensions | Weight kg( ) |
|---|---|---|---|---|---|
| 1756-L85E | High-performance PLC Controller | Advanced process control | EtherNet/IP | 15 × 14 × 13 cm | 0.65 kg |
| 1756-EN2TR | Ethernet Communication Module | Dual-port industrial networking | EtherNet/IP | 13 × 14 × 12 cm | 0.48 kg |
| 1769-L36ERM | CompactLogix Controller | Compact motion control system | Ethernet | 15 × 11 × 10 cm | 0.75 kg |
| 1734-AENTR | POINT I/O Adapter | Distributed I/O communication | EtherNet/IP | 7 × 7 × 7 cm | 0.20 kg |
| 5069-L320ER | Compact 5000 Controller | Compact high-speed automation | EtherNet/IP | 13 × 10 × 9 cm | 0.54 kg |
The 1756-PA75 is designed for convenient installation and industrial maintenance.
Maintenance advantages include:
These features help reduce operational downtime and improve maintenance efficiency.
The module supports multiple industrial automation architectures and communication networks, including:
Its compatibility allows integration into both centralized and distributed industrial systems.
The Allen Bradley 1756-PA75 is a high-efficiency industrial AC power supply module designed for advanced ControlLogix automation systems.
Its stable power performance, industrial durability, strong anti-interference capability, modular flexibility, and excellent compatibility make it an ideal solution for medium and large industrial automation projects.
The module performs exceptionally well in industries such as automotive manufacturing, semiconductor production, energy systems, oil and gas processing, food automation, logistics systems, and intelligent manufacturing facilities.
For users requiring stable operation, long-term reliability, and scalable industrial automation infrastructure, the 1756-PA75 remains one of the most dependable industrial power supply modules available for ControlLogix systems.