1756-L75 | Allen-Bradley ControlLogix Logix5575 Processor – 32 MB PAC Controller

Allen-Bradley · PLCs & Industrial Controllers

Description The Allen-Bradley 1756-L75 is a high-performance ControlLogix Logix5575 controller designed for large, complex automation systems. With 32 MB of user memory and 0.98 MB of I/O memory, it delivers exceptional processing capability for demanding control, motion, safety, and process applications.     Technical Specifications Condition New/Never Used Surplus Brand Allen-Bradley Series ControlLogix Part Number 1756-L75 Manufacturer Rockwell Automation Module Type ControlLogix Processor Module User Memory 32 MB I/O Memory 0.98 MB Max Digital I/O 128,000 Max Analog I/O 4,000 Communication Interfaces 1 USB 2.0 Port Power Dissipation 2.5 W Thermal Dissipation 8.5 BTU/hr Current Draw (1.2V) 5 mA Current Draw (5.1V) 800 mA Isolation Voltage 30V Continuous Energy Storage Capacitor-based (no battery) Supported Chassis 1756-A4, A7, A10, A13, A17 (and K variants) Standard Power Supplies 1756-PA50/72/75, PB50/72/75, PH75 Redundant Power Supplies 1756-PA75R, PB75R, PSCA2 Non-Volatile Storage 1784-SD1 (1 GB SD card included) Enclosure Open style Operating Temperature 0–60 °C Storage Temperature –40–85 °C Vibration 2 g @ 10–500 Hz Shock 30 g operating / 50 g non-operating       Information About 1756-L75 The Allen-Bradley 1756-L75 is a flagship controller within the ControlLogix 5570 family, engineered for high-end, high-availability automation requirements. Its large 32 MB user memory enables execution of complex routines, integrated motion applications, and extensive tag databases. The controller supports up to 32 tasks, with each task capable of running 100 programs, allowing efficient organization of large automation projects. The 1756-L75 supports up to 128,000 digital I/O points and 4,000 analog I/O points, making it suitable for advanced manufacturing, processing, and PlantPAx Distributed Control System (DCS) applications. It includes a built-in USB 2.0 port for programming and diagnostics, operating at 12 Mbps. Key Features: 32 MB user memory + 0.98 MB I/O memory Supports 32 tasks and up to 100 programs per task Interfaces up to 128,000 digital I/O and 4,000 analog I/O Built-in USB 2.0 programming port (12 Mbps) Ships with 1784-SD1 1GB Secure Digital (SD) card Capacitor-based energy storage—no battery required Compatible with PlantPAx process automation architectures Works with all ControlLogix 1756 chassis and power supplies Supports redundant controller configurations Broad communication support: EtherNet/IP, ControlNet, DeviceNet, DH+, RIO, SynchLink, and more The 1756-L75 provides maximum performance in the Logix 5570 controller family, offering the memory, speed, and reliability needed for large-scale automation systems. Ideal for high-speed motion, complex batch processes, coordinated networks, and enterprise-level control, it is one of Rockwell Automation’s most capable PAC offerings.

Brand: Allen-Bradley · Category: PLCs & Industrial Controllers

Key features

• 32 MB user memory + 0.98 MB I/O memory
• Supports 32 tasks and up to 100 programs per task
• Interfaces up to 128,000 digital I/O and 4,000 analog I/O
• Built-in USB 2.0 programming port (12 Mbps)
• Ships with 1784-SD1 1GB Secure Digital (SD) card
• Capacitor-based energy storage—no battery required
• Compatible with PlantPAx process automation architectures
• Works with all ControlLogix 1756 chassis and power supplies
• Supports redundant controller configurations
• Broad communication support: EtherNet/IP, ControlNet, DeviceNet, DH+, RIO, SynchLink, and more

Specifications

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