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Allen-Bradley 1756-L71S
Overview
The 1756-L71S is a high-performance GuardLogix safety controller from Allen-Bradley, providing integrated standard and safety control in a single platform. With 2MB standard memory and 1MB safety memory, it meets the requirements for applications needing SIL 3 and PLe compliance. Designed for use with a 1756-L7SP safety partner, this controller supports complex motion, process, and machine control systems.
Key Features
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2MB standard user memory
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1MB safety memory
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Supports up to 128,000 digital and 4,000 analog I/O
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1 USB port for programming
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100 motion axes support
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Programming: Ladder, ST, FBD, SFC (safety: ladder only)
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Non-volatile memory via included 1GB SD card (1784-SD1)
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Requires 1756-ESMCAP energy storage module (no battery needed)
Technical Specifications
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Catalog Number: 1756-L71S
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Controller Type: GuardLogix 5570
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Standard Memory: 2MB
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Safety Memory: 1MB
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Backplane Current Draw: 5.1V DC @ 800 mA
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Thermal Dissipation: 8.5 BTU/hr
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Operating Temp: 0°C to 60°C (32°F to 140°F)
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Storage Temp: -40°C to 85°C (-40°F to 185°F)
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Humidity: 5–95% non-condensing
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Certifications: UL, CE, TÜV, KC, CCC, ATEX, SIL 3, PLe
Applications
-
Integrated standard and safety control
-
Motion and process automation with safety needs
-
Systems requiring SIL 3 or PLe safety levels
-
Complex machine builds needing high I/O capacity
Why Choose the 1756-L71S?
-
Combines standard logic and safety in one controller
-
Scalable for small to large safety-critical systems
-
Simplifies design and maintenance of compliant safety architectures
-
Trusted Allen-Bradley reliability and long lifecycle support
Description
Allen-Bradley 1756-L71S
Overview
The 1756-L71S is a high-performance GuardLogix safety controller from Allen-Bradley, providing integrated standard and safety control in a single platform. With 2MB standard memory and 1MB safety memory, it meets the requirements for applications needing SIL 3 and PLe compliance. Designed for use with a 1756-L7SP safety partner, this controller supports complex motion, process, and machine control systems.
Key Features
-
2MB standard user memory
-
1MB safety memory
-
Supports up to 128,000 digital and 4,000 analog I/O
-
1 USB port for programming
-
100 motion axes support
-
Programming: Ladder, ST, FBD, SFC (safety: ladder only)
-
Non-volatile memory via included 1GB SD card (1784-SD1)
-
Requires 1756-ESMCAP energy storage module (no battery needed)
Technical Specifications
-
Catalog Number: 1756-L71S
-
Controller Type: GuardLogix 5570
-
Standard Memory: 2MB
-
Safety Memory: 1MB
-
Backplane Current Draw: 5.1V DC @ 800 mA
-
Thermal Dissipation: 8.5 BTU/hr
-
Operating Temp: 0°C to 60°C (32°F to 140°F)
-
Storage Temp: -40°C to 85°C (-40°F to 185°F)
-
Humidity: 5–95% non-condensing
-
Certifications: UL, CE, TÜV, KC, CCC, ATEX, SIL 3, PLe
Applications
-
Integrated standard and safety control
-
Motion and process automation with safety needs
-
Systems requiring SIL 3 or PLe safety levels
-
Complex machine builds needing high I/O capacity
Why Choose the 1756-L71S?
-
Combines standard logic and safety in one controller
-
Scalable for small to large safety-critical systems
-
Simplifies design and maintenance of compliant safety architectures
-
Trusted Allen-Bradley reliability and long lifecycle support