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- Allen -Bradley
- 1768-L45S
- Compact GuardLogix Security Processor
- USA
- 131.6 x 90 x 121.8 mm
- 0.45 kg
- Xiamen, China
- New & In Stock
- T/T, PayPal, Western Union
- 1 Year
- 1-3 Working Days
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- 24-Hour Service
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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.
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Product Overview
The Allen-Bradley 1768-L45S Compact GuardLogix Security Processor is a high-performance, safety-integrated programmable controller designed for industrial applications that require both standard automation and safety functionality in a single unit.
Part of the CompactLogix GuardLogix family, this processor combines advanced control with integrated safety monitoring, offering deterministic control, EtherNet/IP connectivity, and safety-rated logic processing. It is ideal for machinery that requires compliance with international safety standards while maintaining production efficiency.
This controller simplifies system architecture by combining standard and safety control in one platform, reducing wiring, cabinet space, and integration complexity.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Allen-Bradley |
| Model | 1768-L45S |
| Series | Compact GuardLogix |
| Product Type | Safety-Integrated PLC Processor |
| Processor Type | 32-bit Compact PLC CPU |
| Power Supply | 24V DC |
| Memory | 8 MB user memory |
| Digital Inputs | Safety and standard inputs supported |
| Digital Outputs | Safety and standard outputs supported |
| Communication Ports | EtherNet/IP, USB, RS-232/RS-485 |
| I/O Expansion | Supports 1769 Compact I/O modules |
| Programming Software | Studio 5000 Logix Designer |
| Real-Time Clock | Built-in RTC |
| Safety Compliance | SIL 3, PL e capable (dependent on I/O configuration) |
| Mounting Type | DIN rail or panel mounting |
| Dimensions | 131.6 × 90 × 121.8 mm |
| Weight | 0.45 kg |
| Operating Environment | Industrial automation systems with safety requirements |
Function and Working Principle
The 1768-L45S processor functions as a central safety-integrated control unit, combining standard PLC control with safety monitoring.
Key functions include:
- Executing standard control programs for machine operation
- Monitoring safety inputs such as emergency stops, light curtains, and safety mats
- Controlling safety outputs with deterministic timing
- Communicating over EtherNet/IP with HMIs, other controllers, and safety devices
- Logging events and safety system status for diagnostics and compliance
By integrating standard and safety control, the processor reduces complexity while maintaining compliance with industrial safety standards.
Role in Industrial Control Systems
The 1768-L45S serves as a safety-integrated mid-range PLC, providing:
- Standard process and machine control
- Safety monitoring and emergency response management
- Communication with standard and safety-rated I/O modules
- Integration with distributed automation systems and safety networks
It is often deployed in production machinery, material handling systems, and industrial processes where operator and machine safety are critical.
Industrial Applications
This processor is commonly used in:
- Automated assembly and packaging lines
- Material handling and conveyor systems
- Robotics and collaborative machinery
- Food and beverage processing systems
- Pharmaceutical and chemical manufacturing
- Any industrial environment requiring integrated safety control
Its safety-integrated design simplifies compliance with ISO 13849, IEC 61508, and other safety standards.
Installation and System Integration
For optimal operation:
- Mount the processor on a DIN rail or in a control panel
- Provide 24V DC power supply
- Connect both standard and safety-rated I/O modules
- Configure using Studio 5000 Logix Designer software
- Integrate into EtherNet/IP and safety networks for monitoring and diagnostics
- Ensure proper grounding and separation of safety and standard circuits
Following these practices ensures reliable and compliant operation of the safety system.
Compatible System Components
The 1768-L45S is compatible with:
- 1769 Compact I/O modules (standard and safety)
- Human Machine Interfaces (PanelView series)
- Safety sensors, light curtains, and emergency stops
- Motor starters, drives, and actuators
- SCADA and EtherNet/IP network devices
- Safety I/O expansion modules for SIL/PL e applications
It forms the core of integrated safety and automation control systems.
Recommended Alternative Models
| Model | Type | Key Feature | Application |
|---|---|---|---|
| 1768-L43S | GuardLogix PLC | Lower memory, safety-integrated | Smaller machinery safety systems |
| 1768-L45 | CompactLogix PLC | Standard, non-safety CPU | Mid-range automation without safety |
| 1769-L33ER | CompactLogix PLC | Extended I/O, EtherNet/IP | Larger machines requiring standard control |
| Allen-Bradley 1763-L16BBB | MicroLogix PLC | Compact, standard automation | Small machine control |
| Siemens S7-1500F | Safety PLC | Integrated safety control | High-end safety-critical applications |
Key Advantages
- Combines standard and safety control in a single processor
- Safety-certified and compliance-ready for SIL 3 / PL e
- Compact and lightweight design
- Integrated EtherNet/IP for networked systems
- Expandable with 1769 Compact I/O modules
- Suitable for industrial automation requiring high safety standards
Technical FAQs
What is the main function of the 1768-L45S?
It is a safety-integrated PLC that combines standard process control and safety monitoring in one processor.
Does it support safety-rated I/O?
Yes, it supports safety I/O modules capable of SIL 3 / PL e compliance.
Can it communicate with HMIs and other controllers?
Yes, via EtherNet/IP, USB, and serial connections.
Which programming software is required?
It is programmed using Studio 5000 Logix Designer software.
Conclusion
The Allen-Bradley 1768-L45S Compact GuardLogix Security Processor delivers both standard and safety control in a compact, high-performance PLC. Its integrated safety features, network connectivity, and modular I/O support make it ideal for applications requiring compliance with international safety standards while maintaining production efficiency.
This processor simplifies system design, reduces cabinet space, and provides a reliable foundation for modern, safety-critical industrial automation.