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- ControlLogix ControlNet Communication Module
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- 14.8 × 14.2 × 13.5 cm
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Industrial Technical Report – 1756-PH75 ControlLogix Power Supply Module
Product Overview
The 1756-PH75 is a high-capacity AC power supply module designed for ControlLogix industrial automation systems. It converts AC input voltage into regulated DC backplane power, ensuring stable operation of PLC chassis components such as processors, communication modules, and I/O devices.
This model is designed for high-load automation systems where multiple modules are installed in a single chassis and stable power distribution is critical. It is commonly used in large-scale industrial control architectures requiring higher power capacity compared with standard PA-series modules.
The PH75 variant is engineered for robust industrial environments and continuous-duty applications.
Brand Information
The product belongs to a globally recognized industrial automation ecosystem specializing in PLC control systems, motion control, industrial communication, and process automation solutions.
It is widely used in:
- Industrial automation systems
- Manufacturing control systems
- Process industries
- Energy infrastructure systems
- Large-scale distributed control systems
Key characteristics include:
- High system stability
- Strong industrial durability
- Modular architecture
- Long operational lifespan
- High load power capability
Product Series
ControlLogix Modular Automation Platform
The 1756-PH75 belongs to the ControlLogix series, a modular PLC platform designed for scalable and high-performance industrial automation.
Key system features include:
- Fully modular architecture
- High-speed communication capability
- Distributed control design
- Flexible system expansion
- Multi-module integration support
- Redundancy-ready structure
Supported module categories:
- CPU processor modules
- Digital I/O modules
- Analog modules
- Communication modules
- Motion control modules
- Power supply modules
The 1756-PH75 provides high-capacity AC-to-DC power conversion for large ControlLogix chassis systems.
Technical Parameters
Detailed Specification Table
| Parameter | Specification |
|---|---|
| Model | 1756-PH75 |
| Product Type | High-Capacity AC Power Supply Module |
| Series | ControlLogix |
| Input Voltage Range | 85–265V AC |
| Nominal Input | 120 / 240V AC |
| Input Frequency | 47–63 Hz |
| Maximum Input Power | 240 W |
| Output Power | 75 W |
| Backplane Current (5V DC) | 13 A |
| Backplane Current (3.3V DC) | 4 A |
| Backplane Current (1.2V DC) | 1.5 A |
| Backplane Current (24V DC) | 2.8 A |
| Isolation Voltage | 250V continuous |
| Inrush Current | ≤ 35 A |
| Efficiency | High-efficiency AC-DC conversion |
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Humidity Range | 5%–95% non-condensing |
| Mounting Type | Chassis left-slot installation |
| Cooling Method | Natural convection |
| EMC Protection | Industrial-grade shielding |
| Dimensions | 14.8 × 14.2 × 13.5 cm |
| Weight kg（ ） | 1.55 kg – 1.70 kg |
Product Description
The 1756-PH75 converts AC input power into stable backplane voltage for ControlLogix systems. It is designed to support high-density chassis configurations where multiple modules require stable and continuous power.
Its higher capacity makes it suitable for systems with expanded I/O structures or multiple communication modules installed simultaneously.
It ensures stable operation under varying industrial electrical conditions.
Product Applications
Industrial Automation Systems
Used in:
- Large-scale production lines
- Robotic automation systems
- Assembly systems
- Packaging automation
Energy Industry
Applied in:
- Power generation systems
- Substation automation
- Renewable energy control systems
- Electrical distribution networks
Oil & Gas Industry
Used in:
- Refinery automation systems
- Pipeline monitoring systems
- Offshore control platforms
- SCADA systems
Transportation Systems
Used in:
- Railway control systems
- Metro automation systems
- Traffic control systems
- Electrified transport infrastructure
Heavy Industrial Systems
Used in:
- Steel production plants
- Mining automation systems
- Cement manufacturing lines
- Heavy machinery control
Product Advantages
1. High Power Capacity
Supports larger ControlLogix chassis configurations.
2. Stable AC-to-DC Conversion
Ensures reliable system backplane power.
3. Industrial Durability
Designed for harsh industrial environments.
4. Modular Compatibility
Works seamlessly within ControlLogix architecture.
5. Continuous Operation Capability
Suitable for 24/7 industrial systems.
6. Strong Electrical Stability
Maintains consistent output under fluctuating load conditions.
Recommended Models (Same Series or Related)
ControlLogix Power Supply Family
| Model | Type | Input | Key Feature | Dimensions | Weight kg（ ） |
|---|---|---|---|---|---|
| 1756-PH75 | High-Capacity AC Supply | 85–265V AC | High-load system support | 14.8×14.2×13.5 cm | 1.55–1.70 kg |
| 1756-PA75 | AC Power Supply | 85–265V AC | Standard AC module | 14.8×14.2×13.5 cm | 1.58 kg |
| 1756-PA72 | AC Power Supply | 85–265V AC | Medium AC capacity | 14.5×14.0×13.2 cm | 1.45 kg |
| 1756-PA50 | AC Power Supply | 85–265V AC | Compact AC module | 14.2×14.0×13.2 cm | 1.20 kg |
| 1756-PB75 | DC Power Supply | 18–32V DC | High-capacity DC module | 14.8×14.2×13.5 cm | 1.55 kg |
| 1756-PB75R | Redundant DC Supply | 18–32V DC | Redundancy system | 17.5×14.5×13.7 cm | 1.60 kg |
Recommended Popular Models (Same Platform Ecosystem)
Widely Used ControlLogix Modules
| Model | Function | Network | Role | Dimensions | Weight kg（ ） |
|---|---|---|---|---|---|
| 1756-L85E | PLC Controller | EtherNet/IP | Main processor unit | 15×14×13 cm | 0.65 kg |
| 1756-EN2TR | Ethernet Module | EtherNet/IP | Communication module | 13×14×12 cm | 0.48 kg |
| 1769-L36ERM | Compact PLC | Ethernet | Mid-range controller | 15×11×10 cm | 0.75 kg |
| 1734-AENTR | I/O Adapter | EtherNet/IP | Remote I/O gateway | 7×7×7 cm | 0.20 kg |
| 5069-L320ER | Advanced PLC | EtherNet/IP | High-performance control system | 13×10×9 cm | 0.54 kg |
Installation Notes
The module is installed in the left slot of a ControlLogix chassis and connects directly to the backplane power system.
Key requirements:
- Verify AC input stability
- Maintain grounding integrity
- Ensure ventilation clearance
- Avoid high-humidity condensation zones
- Confirm chassis compatibility
Maintenance Characteristics
- Hot-swappable module design
- Built-in diagnostics
- Low maintenance requirements
- Long operational lifecycle
- Quick field replacement
Final Summary
The 1756-PH75 is a high-capacity AC power supply module designed for ControlLogix automation systems. It provides stable and reliable backplane power for large and complex industrial control architectures.
Its strength lies in high load capability, stable output performance, and industrial-grade durability, making it suitable for demanding automation environments requiring continuous and stable operation.