Allen-Bradley | 1756-IT6I2 | ControlLogix (1756 Series)

Product Description: Allen-Bradley 1756-IT6I2

The Allen-Bradley 1756-IT6I2 is a high-performance analog input module designed for use in ControlLogix systems, offering six thermocouple input channels and two isolated 4–20 mA current input channels. This dual-purpose module enables simultaneous temperature and process variable acquisition, making it ideal for applications requiring both thermal monitoring and precision analog measurement within a single module.

Key Features

• 6 thermocouple inputs (non-isolated)
• 2 isolated current input channels (4–20 mA)
• Supports multiple thermocouple types (J, K, T, E, N, R, S, B)
• Cold junction compensation (CJC) supported via external sensors
• High accuracy and resolution for precise analog signal monitoring
• Channel- level fault diagnostics (open circuit, over/under range)
• Individually configurable channels via Studio 5000
• Compatible with any ControlLogix chassis

Technical Specifications

• Number of Channels: 8 (6 TC + 2 Isolated mA)
• Thermocouple Types: J, K, T, E, N, R, S, B
• Current Input Range: 4–20 mA
• Resolution:
• Thermocouple: ~15 bits
• Current: 15 bits
• Accuracy: ±0.25°C (typical, thermocouple)
• Isolation:
• TC channels: common mode
• mA channels: isolated from each other and TC
• Input Impedance:
• TC: >10 MΩ
• mA: 250 Ω
• Backplane Current Draw:
• 200 mA @ 5.1V DC
• 85 mA @ 24V DC
• Operating Temperature: 0°C to 60°C
• Mounting: ControlLogix chassis slot
• Certifications: UL Listed, CE, CSA, RoHS, Class I Div 2

Application Areas

• Industrial process control and monitoring
• Temperature measurement for ovens, kilns, and reactors
• Pressure, flow, or level sensing via 4–20 mA transducers
• Food, pharmaceutical, and chemical production
• Combined temperature and process signal acquisition

Advantages

• Consolidates thermocouple and analog current inputs into one module
• Reduces system footprint and wiring complexity
• High accuracy and resolution for demanding applications
• Channel-specific configuration enhances flexibility
• Seamless integration with ControlLogix systems and Studio 5000