1768-L45S | Allen-Bradley Compact GuardLogix Safety Processor With 3 MB Standard And 1 MB Safety Memory
1768-L45S | Allen-Bradley Compact GuardLogix Safety Processor With 3 MB Standard And 1 MB Safety Memory
1768-L45S | Allen-Bradley Compact GuardLogix Safety Processor With 3 MB Standard And 1 MB Safety Memory
    1768-L45S | Allen-Bradley Compact GuardLogix Safety Processor With 3 MB Standard And 1 MB Safety Memory
1768-L45S | Allen-Bradley Compact GuardLogix Safety Processor With 3 MB Standard And 1 MB Safety Memory

1768-L45S | Allen-Bradley Compact GuardLogix Safety Processor With 3 MB Standard And 1 MB Safety Memory

Part #: 1768-L45S Manufactured by: Processor
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$4,669.00
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$4,669.00
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Condition: New-Surplus Original Box
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Product Overview
The Allen-Bradley 1768-L45S Compact GuardLogix Safety Processor is a specialized controller designed for safety-critical a...  Read more
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Product Description P/N: 1768-L45S

Description / Specifications

Description 

The Allen-Bradley 1768-L45S is a Compact GuardLogix safety processor designed for high-integrity industrial control and safety applications. It provides 3 MB of standard memory and 1 MB of safety memory to support advanced logic processing and certified safety functions.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Allen-Bradley
Category Controller
Part Number 1768-L45S
Subcategory Compact GuardLogix Safety Processor
Product Family CompactLogix
Memory 3 MB standard; 1 MB safety
Integrated Ports One RS-232
Serial Baud Rate 19,200 bps
Supported Protocols DF1 PTP, DF1 Master, DF1 Slave, DF1 Radio Modem, ASCII, DH-485
No. of Connections 250
Safety Certifications SIL3, PL(e)
Local I/O Capacity 4 modules
Expansion I/O Capacity 30 modules
Communication Cable 1747-CP3
Mounting Type DIN rail or panel mount
Operating Temperature 0 to 60°C (32 to 140°F)
Operating Vibration 5 g @ 10–500 Hz
Operating Shock 30 g
Power Consumption 4.34 W
Region of Use Global industrial environments
Controller Type Safety and standard control processor

 

 

Information About 1768-L45S

The 1768-L45S is a member of the CompactLogix and GuardLogix product family, combining standard control capabilities with integrated SIL3 and PL(e) safety functionality in a single controller. Its compact construction supports DIN rail or panel mounting, enabling easy installation in space-constrained control cabinets while maintaining robust performance. The controller includes a built-in RS-232 serial port that supports DF1, ASCII, and related communication modes for seamless integration with existing automation networks. Designed for demanding safety applications, it supports up to four local I/O modules, up to thirty expansion modules, and provides 250 communication connections for complex industrial systems.

Key Features

  • Integrated Standard and Safety Memory: Provides 3 MB of standard memory and 1 MB of dedicated safety memory to support combined control and certified safety logic.
  • SIL3 / PL(e) Safety Rating: Meets stringent global safety requirements for machinery safeguarding and high-risk industrial processes.
  • Versatile RS-232 Communication: Supports DF1 Point-to-Point, DF1 Master, DF1 Slave, DF1 Radio Modem, ASCII, DH-485, and user-defined protocols for broad connectivity.
  • High Connection Capacity: Offers up to 250 simultaneous connections, enabling communication with a wide range of devices and network components.
  • Modular I/O Expansion: Supports four local I/O modules and up to thirty modules in expansion banks for scalable system design.
  • Industrial-Grade Environmental Tolerance: Withstands 5 g vibration, 30 g shock, and operates in temperatures from 0 to 60°C for reliable performance.
  • Flexible Mounting Options: Compatible with both DIN rail and panel mounting, allowing easy integration into various enclosure designs.
  • Optimized For CompactLogix Architecture: Designed to work seamlessly within the Compact GuardLogix family, enabling unified control and safety programming.

The 1768-L45S delivers the reliability and precision required for safeguarding critical industrial machinery and executing integrated safety and standard control functions.

Frequently Asked Questions about 1768-L45S
Question: What safety rating does the 1768-L45S meet?
Date Update:20/06/2025
Answer:

The 1768-L45S controller meets high safety certification standards. It is compliant with SIL3 (Safety Integrity Level 3) and PL(e) (Performance Level e) requirements. These ratings ensure it is suitable for use in critical industrial safety applications. It can reliably manage functions like emergency stops, safety interlocks, and zone monitoring.

Question: How much memory does the controller have?
Date Update:20/06/2025
Answer:

This Compact GuardLogix controller offers a total of 4 MB memory divided as follows:

  • 3 MB Standard Memory: For control tasks and general programming
  • 1 MB Safety Memory: For safety routines, diagnostics, and safety-rated logic

This memory allocation allows it to handle both standard and safety applications simultaneously.

Question: How many I/O modules can it support?
Date Update:20/06/2025
Answer:

The 1768-L45S has a flexible I/O capacity based on system configuration:

  • Local I/O Modules: Supports up to 4 directly connected modules
  • Expansion I/O Modules: Supports up to 30 additional modules via expansion banks

This scalability makes it suitable for both compact systems and moderately complex architectures.

Question: How can I mount the 1768-L45S?
Date Update:20/06/2025
Answer:

It supports both DIN rail and panel mounting. This allows it to fit into a variety of enclosure types and control cabinet layouts. The compact form factor and low power consumption (4.34 W) make it ideal for dense installations or retrofit projects. Proper mounting also ensures optimal shock and vibration resistance.

Question: Is the 1768-L45S still in production?
Date Update:20/06/2025
Answer:

No, the 1768-L45S was officially discontinued by Rockwell Automation on October 30, 2020. It is no longer available for sale, and users are advised to migrate to engineering replacement options. Although existing units may still function in the field, spare parts and support could become increasingly limited. It’s important to plan system upgrades accordingly.

Description / Specifications

Description 

The Allen-Bradley 1768-L45S is a Compact GuardLogix safety processor designed for high-integrity industrial control and safety applications. It provides 3 MB of standard memory and 1 MB of safety memory to support advanced logic processing and certified safety functions.

 

 

Technical Specifications 

Condition New/Never Used Surplus
Brand Allen-Bradley
Category Controller
Part Number 1768-L45S
Subcategory Compact GuardLogix Safety Processor
Product Family CompactLogix
Memory 3 MB standard; 1 MB safety
Integrated Ports One RS-232
Serial Baud Rate 19,200 bps
Supported Protocols DF1 PTP, DF1 Master, DF1 Slave, DF1 Radio Modem, ASCII, DH-485
No. of Connections 250
Safety Certifications SIL3, PL(e)
Local I/O Capacity 4 modules
Expansion I/O Capacity 30 modules
Communication Cable 1747-CP3
Mounting Type DIN rail or panel mount
Operating Temperature 0 to 60°C (32 to 140°F)
Operating Vibration 5 g @ 10–500 Hz
Operating Shock 30 g
Power Consumption 4.34 W
Region of Use Global industrial environments
Controller Type Safety and standard control processor

 

 

Information About 1768-L45S

The 1768-L45S is a member of the CompactLogix and GuardLogix product family, combining standard control capabilities with integrated SIL3 and PL(e) safety functionality in a single controller. Its compact construction supports DIN rail or panel mounting, enabling easy installation in space-constrained control cabinets while maintaining robust performance. The controller includes a built-in RS-232 serial port that supports DF1, ASCII, and related communication modes for seamless integration with existing automation networks. Designed for demanding safety applications, it supports up to four local I/O modules, up to thirty expansion modules, and provides 250 communication connections for complex industrial systems.

Key Features

  • Integrated Standard and Safety Memory: Provides 3 MB of standard memory and 1 MB of dedicated safety memory to support combined control and certified safety logic.
  • SIL3 / PL(e) Safety Rating: Meets stringent global safety requirements for machinery safeguarding and high-risk industrial processes.
  • Versatile RS-232 Communication: Supports DF1 Point-to-Point, DF1 Master, DF1 Slave, DF1 Radio Modem, ASCII, DH-485, and user-defined protocols for broad connectivity.
  • High Connection Capacity: Offers up to 250 simultaneous connections, enabling communication with a wide range of devices and network components.
  • Modular I/O Expansion: Supports four local I/O modules and up to thirty modules in expansion banks for scalable system design.
  • Industrial-Grade Environmental Tolerance: Withstands 5 g vibration, 30 g shock, and operates in temperatures from 0 to 60°C for reliable performance.
  • Flexible Mounting Options: Compatible with both DIN rail and panel mounting, allowing easy integration into various enclosure designs.
  • Optimized For CompactLogix Architecture: Designed to work seamlessly within the Compact GuardLogix family, enabling unified control and safety programming.

The 1768-L45S delivers the reliability and precision required for safeguarding critical industrial machinery and executing integrated safety and standard control functions.

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