1756-L72K

General Specifications

• Product type designation: ControlLogix Controller
• Model: 1756-L72K
• Description: 4 MB controller with 1 GB Secure Digital (SD) card (1784-SD1) pre-installed

Memory

• User memory: 4 MB
• I/O memory: 0.98 MB
• Non-volatile memory: 1 GB Secure Digital (SD) card (1784-SD1), factory pre-installed in the controller

I/O Capacity

• Digital I/O, max: 128,000
• Analog I/O, max: 4,000
• Total I/O, max: 128,000

Energy Storage Modules

• 1756-ESMCAP / 1756-ESMCAPK: Capacitor energy storage module (removable, factory standard with each controller)
• 1756-ESMNSE / 1756-ESMNSEK: Capacitor energy storage module (removable, without backup WallClockTime power)
• 1756-ESNMRM / 1756-ESNMRMK: Capacitor energy storage module (non-removable, helps prevent USB connection and SD card usage for enhanced controller security)

Power and Dissipation

• Current draw @ 1.2V DC: 5 mA
• Current draw @ 5.1V DC: 800 mA
• Power dissipation: 2.5 W
• Thermal dissipation: 8.5 BTU/hr

Interface

• USB port: USB 2.0, full-speed (12 Mbps)
• Isolation voltage: 30V continuous (basic insulation type, USB port to system, tested per IEC/UL 61010-1)

Physical Specifications

• Slot width: 1
• Module mounting location: Rack-based, any slot
• Weight: Approx. 0.25 kg (0.55 lb)

Compatible Chassis

• 1756-A4, 1756-A4K, 1756-A7, 1756-A7K, 1756-A10, 1756-A10K, 1756-A13, 1756-A13K, 1756-A17, 1756-A17K

Compatible Power Supplies

• Standard power supplies: 1756-PA50, 1756-PA50K, 1756-PA72, 1756-PA72K, 1756-PA75, 1756-PA75K, 1756-PB50, 1756-PB50K, 1756-PB72, 1756-PB72K, 1756-PB75, 1756-PB75K, 1756-PC75, 1756-PH75
• Redundant power supplies: 1756-PA75R, 1756-PA75RK, 1756-PB75R, 1756-PB75RK, 1756-PSCA2, 1756-PSCA2K

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