ProductPRODUCT
Featured products
Contact Us
- Allen Bradley
- 1756-PLS
- ControlLogix ControlNet Communication Module
- USA
- 14.8 × 14.2 × 13.5 cm
- 1.7kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
- DHL, UPS, TNT, FedEx and EMS.
- 24-Hour Service
- COO
- 74
Our advantage
Global Logistics
We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
Brand new and original
Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
24-hour service
We provide 7*24 hours service to our customers. We will be there whenever you need us.
Price advantage
All our products are priced very favorably because we have our own warehouse and supply.
| Company Information | |||
| [email protected] | |||
| Mobile | +8615980777398 | ||
| +8615980777398 | |||
| 15980777398 |
Industrial Technical Report – 1756-PLS ControlLogix Power Supply Module
Product Overview
The 1756-PLS is a ControlLogix power supply module used in industrial automation systems to provide regulated DC backplane power for PLC chassis. It converts input electrical power into stable output voltage levels required by processors, communication modules, and I/O devices within the ControlLogix architecture.
This model is designed for standard industrial control applications where stable power distribution, modular expansion capability, and system reliability are required. It is typically used in mid-scale automation systems rather than extreme redundancy or high-temperature XT environments.
The 1756-PLS functions as a core infrastructure component within the ControlLogix chassis, ensuring continuous operation of all installed modules.
Brand Information
The product belongs to a globally recognized industrial automation ecosystem specializing in PLC systems, motion control, industrial communication, and process automation solutions.
It is widely applied in:
- Factory automation systems
- Process control systems
- Manufacturing execution environments
- Energy distribution systems
- Industrial machinery control systems
Key characteristics include:
- High reliability design
- Modular system compatibility
- Stable power conversion
- Industrial-grade durability
- Long operational lifespan
Product Series
ControlLogix Modular Automation Platform
The 1756-PLS belongs to the ControlLogix series, a modular PLC platform designed for scalable industrial automation applications.
Key system features include:
- Fully modular chassis architecture
- High-speed communication capability
- Distributed control design
- Flexible expansion structure
- Multi-module integration support
- Standardized power backplane system
Supported module types include:
- CPU processors
- Digital I/O modules
- Analog modules
- Communication modules
- Motion control modules
- Power supply modules
The 1756-PLS ensures stable system-wide power distribution across the chassis backplane.
Technical Parameters
Detailed Specification Table
| Parameter | Specification |
|---|---|
| Model | 1756-PLS |
| Product Type | ControlLogix Power Supply Module |
| Series | ControlLogix |
| Input Voltage Range | 85–265V AC |
| Nominal Input | 120 / 240V AC |
| Input Frequency | 47–63 Hz |
| Maximum Input Power | 150–200 W |
| Output Power | ~75 W (system backplane dependent) |
| Backplane Current (5V DC) | 10–13 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 | ≤ 30 A |
| Efficiency | Industrial 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（ ） | 1.45 kg – 1.70 kg |
Product Description
The 1756-PLS converts AC input power into regulated DC backplane voltage used by ControlLogix chassis systems. It ensures stable operation of all connected modules by maintaining consistent power distribution across the backplane.
It is designed for general-purpose industrial automation systems requiring reliable and continuous operation without the need for redundancy or extreme environmental hardening.
This module is commonly used in standard factory automation and process control environments.
Product Applications
Industrial Automation Systems
Used in:
- Assembly line automation
- Packaging systems
- Conveyor control systems
- Machine automation
Manufacturing Industry
Applied in:
- CNC machining systems
- Industrial robotics
- Production line control
- Process equipment automation
Energy Systems
Used in:
- Electrical distribution systems
- Power monitoring systems
- Substation control systems
- Renewable integration systems
Oil & Gas Industry
Used in:
- Refinery control systems
- Pipeline monitoring systems
- SCADA systems
- Offshore automation units
Transportation Systems
Used in:
- Railway automation systems
- Traffic control systems
- Metro signaling systems
- Infrastructure monitoring
Product Advantages
1. Stable Power Conversion
Ensures reliable AC-to-DC conversion for chassis operation.
2. Modular Compatibility
Works seamlessly within ControlLogix architecture.
3. Industrial Reliability
Suitable for continuous-duty industrial applications.
4. Compact Integration
Fits standard chassis configurations.
5. Long Service Life
Designed for extended operational cycles.
6. Consistent Output Stability
Maintains steady backplane voltage under varying load conditions.
Recommended Models (Same Series or Related)
ControlLogix Power Supply Family
| Model | Type | Input | Key Feature | Dimensions | Weight kg（ ） |
|---|---|---|---|---|---|
| 1756-PLS | AC Power Supply | 85–265V AC | Standard chassis power module | 14.8×14.2×13.5 cm | 1.45–1.70 kg |
| 1756-PA75 | AC Power Supply | 85–265V AC | High-capacity AC module | 14.8×14.2×13.5 cm | 1.58 kg |
| 1756-PA72 | AC Power Supply | 85–265V AC | Medium AC module | 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-PB72 | DC Power Supply | 18–32V DC | Medium DC module | 14.5×11.2×14.0 cm | 0.95 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 processing 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 system backplane.
Key requirements:
- Verify AC input range
- Ensure proper grounding
- Maintain ventilation clearance
- Avoid high-temperature buildup
- Confirm chassis compatibility
Maintenance Characteristics
- Hot-swappable design
- Built-in diagnostics
- Low maintenance requirements
- Long operational lifecycle
- Fast replacement capability
Final Summary
The 1756-PLS is a standard ControlLogix AC power supply module designed for stable and reliable industrial automation applications. It provides consistent backplane power for PLC systems and supports modular expansion in mid-scale industrial environments.
Its strengths lie in stability, compatibility, and long-term operational reliability, making it suitable for a wide range of factory automation and process control systems.