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- 14.2 × 14.0 × 13.2 cm
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Industrial Technical Report – 1756-PB50 ControlLogix DC Power Supply Module
Product Overview
The 1756-PB50 is a DC input power supply module designed for ControlLogix industrial automation systems. It is responsible for converting DC input voltage into stable backplane power, ensuring continuous operation of PLC chassis components such as controllers, I/O modules, and communication interfaces.
This model is widely used in industrial environments where DC power infrastructure is preferred, such as battery-backed systems, power plants, transportation systems, and distributed control installations.
The 1756-PB50 is designed for medium-capacity control systems and provides reliable, stable power distribution within the ControlLogix chassis architecture.
Brand Information
The product belongs to a globally recognized industrial automation technology ecosystem specializing in PLC systems, motion control, industrial communication, and integrated automation solutions.
It is widely applied in:
- Industrial control systems
- Factory automation platforms
- Process control environments
- Energy infrastructure systems
- High-reliability manufacturing systems
Key characteristics include:
- Stable industrial-grade design
- Strong environmental adaptability
- Long operational lifecycle
- Modular system architecture
- High system compatibility
Product Series
ControlLogix Modular Automation Platform
The 1756-PB50 belongs to the ControlLogix PLC platform, which is designed for scalable and high-performance industrial automation applications.
Key features of the series include:
- Fully modular system structure
- High-speed industrial communication
- Distributed control capability
- Flexible system expansion
- Multi-module integration support
- Redundancy-ready architecture
Supported module categories include:
- CPU processors
- Digital I/O modules
- Analog modules
- Communication modules
- Motion control modules
- Power supply modules
The 1756-PB50 provides stable DC power input for chassis operation.
Technical Parameters
Detailed Specification Table
| Parameter | Specification |
|---|---|
| Model | 1756-PB50 |
| Product Type | DC Power Supply Module |
| Series | ControlLogix |
| Input Voltage Range | 18–32V DC |
| Nominal Input | 24V DC |
| Maximum Input Power | 50 W |
| Backplane Current (5V DC) | 10 A |
| Backplane Current (3.3V DC) | 3.5 A |
| Backplane Current (1.2V DC) | 1.25 A |
| Backplane Current (24V DC) | 1.5 A |
| Isolation Voltage | 250V continuous |
| Efficiency | High-efficiency DC conversion |
| Ripple Noise | Low ripple output |
| 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 mounting |
| Cooling Method | Natural convection |
| EMC Protection | Industrial-grade shielding |
| Dimensions | 14.2 × 14.0 × 13.2 cm |
| Weight kg（ ） | 0.95 kg – 1.05 kg |
Product Description
The 1756-PB50 converts DC input power into regulated backplane voltage required by ControlLogix systems. It ensures stable operation of all connected modules within the chassis, maintaining system reliability even under fluctuating industrial DC power conditions.
This module is commonly used in systems powered by:
- Industrial DC networks
- Battery-backed control systems
- Renewable energy systems
- Transportation power systems
It is suitable for medium-load automation environments requiring stable and continuous operation.
Product Applications
Industrial Automation
Used in:
- Production line control systems
- Packaging automation
- Material handling systems
- Assembly line equipment
Energy Systems
Applied in:
- Solar power control systems
- Wind energy systems
- Battery storage systems
- Power distribution automation
Transportation Systems
Used in:
- Rail signaling systems
- Metro control systems
- Traffic automation systems
- Electrified transport infrastructure
Oil & Gas Industry
Common in:
- Remote pipeline control systems
- Offshore automation systems
- SCADA monitoring networks
- Refinery control systems
Manufacturing Systems
Used in:
- CNC machinery control
- Automated machining systems
- Industrial robotics
- Process automation lines
Product Advantages
1. Stable DC Power Conversion
Ensures reliable transformation of DC input into system backplane power.
2. Industrial Reliability
Designed for continuous operation in harsh industrial environments.
3. Compact System Integration
Fits seamlessly into ControlLogix chassis architecture.
4. Low Power Ripple Output
Improves system stability and reduces electrical noise impact.
5. Flexible Application Range
Suitable for multiple DC-powered industrial systems.
6. Long Service Life
Built with durable industrial components for extended operation.
Recommended Models (Same Series or Related)
ControlLogix Power Module Family
| Model | Type | Input | Key Feature | Dimensions | Weight kg（ ） |
|---|---|---|---|---|---|
| 1756-PB50 | DC Power Supply | 18–32V DC | Medium-capacity DC module | 14.2×14.0×13.2 cm | 0.95–1.05 kg |
| 1756-PB72 | DC Power Supply | 18–32V DC | Higher-capacity DC module | 14.5×14.0×13.2 cm | 1.40–1.50 kg |
| 1756-PB75 | DC Power Supply | 18–32V DC | High-efficiency DC model | 14.8×14.2×13.5 cm | 1.50–1.60 kg |
| 1756-PB75R | Redundant DC Supply | 18–32V DC | Redundancy support system | 17.5×14.5×13.7 cm | 1.55–1.65 kg |
| 1756-PA50 | AC Power Supply | 85–265V AC | AC equivalent model | 14.2×14.0×13.2 cm | 1.10–1.25 kg |
| 1756-PSCA2 | Chassis Adapter | N/A | Redundant power interface | 13×12×6 cm | 0.85 kg |
Recommended Popular Models (Same Platform Ecosystem)
Widely Used Automation Modules
| Model | Function | Network | Role | Dimensions | Weight kg（ ） |
|---|---|---|---|---|---|
| 1756-L85E | PLC Controller | EtherNet/IP | System processor | 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 Controller | Ethernet | Mid-range PLC | 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 | 13×10×9 cm | 0.54 kg |
Installation Notes
The module is installed into the left slot of a compatible ControlLogix chassis and connects directly to the system backplane.
Key requirements:
- Verify DC input voltage range
- Ensure correct chassis compatibility
- Maintain proper grounding
- Provide adequate ventilation
- Avoid high-vibration mounting areas
Maintenance Characteristics
- Hot-swappable design
- Simple diagnostic indicators
- Low maintenance requirements
- Long operational cycle
- Fast replacement capability
Final Summary
The 1756-PB50 is a reliable DC power supply module designed for ControlLogix automation systems. It provides stable backplane power for medium-capacity industrial applications and ensures consistent operation in DC-powered environments.
Its compact structure, industrial durability, and stable output performance make it suitable for automation systems requiring reliable and continuous operation in manufacturing, energy, transportation, and process industries.