1756-L75 | Allen-Bradley | ControlLogix Controller

Features and Specifications for ControlLogix Standard Controller (1756-L75)

Controller Tasks

• Tasks: 32 (combination of continuous, periodic, and event tasks)
• Programs per Task:
  • 32 programs/tasks (prior to RSLogix 5000® version 15.01.00)
  • 100 programs/tasks (RSLogix 5000 version 15.01.00 and later)
  • 1000 programs/tasks (Logix Designer version 24.00.00 and later)

Memory Specifications

• User Memory: 32 MB
• I/O Memory: 0.98 MB
• Optional Nonvolatile Memory Storage:
  • 1 GB (1784-SD1, included with every controller)
  • 2 GB (1784-SD2)

I/O Capabilities

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

Power Requirements

• 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
• Isolation Voltage: 30V (continuous), basic insulation type, USB port-to-system
  • Compliant with IEC/UL 61010-1

USB Port

• Type: USB 2.0, full speed (12 Mbps)

Physical Specifications

• Weight: 0.25 kg (0.55 lb)
• Slot Width: 1
• Module Location: Chassis-based, any slot

Environmental Specifications

• Maximum Surrounding Air Temperature: 60 °C (140 °F)
• Relative Humidity: 5 to 95% non-condensing
  • Compliant with IEC 60068-2-30 (Test Db, Unpackaged Damp Heat)
• Vibration: 2 g @ 10 to 500 Hz
  • Compliant with IEC 60068-2-6 (Test Fc, Operating)
• Shock:
  • Operating: 30 g
  • Non-operating: 50 g (45 g with SD card installed)
  • Compliant with IEC 60068-2-27 (Test Ea, Unpackaged Shock)

Emissions and Immunity

• Emissions: IEC 61000-6-4
• ESD Immunity:
  • IEC 61000-4-2: 6 kV contact discharges, 8 kV air discharges

Wire Category

• USB Port: Category 3

Temperature Codes and Safety

• North American Temperature Code: T4A
• ATEX Temperature Code: T4
• IECEx Temperature Code: T4
• Enclosure Type Rating: None (open-style)