A-B 1756-IT6I20 ControlLogix Temperature Input Module

Allen-Bradley 1756-IT6I20 ControlLogix Temperature Input Module

Product Description

The Allen-Bradley 1756-IT6I20 is a ControlLogix 6-channel isolated thermocouple / millivolt input module designed for high-precision temperature measurement applications. It provides isolated analog inputs for thermocouple sensors and millivolt signals, allowing ControlLogix systems to directly monitor temperature and process variables in industrial environments.

Technical Specifications

• Brand: Allen-Bradley (Rockwell Automation)
• Model: 1756-IT6I20
• Product Type: ControlLogix Temperature Input Module
• Series: ControlLogix 1756
• Input Type: Isolated Thermocouple / Millivolt Input
• Number of Channels: 6 isolated input channels
• Input Signal Range:
  • Thermocouple input
  • -12…30 mV
  • -12…78 mV
• Supported Thermocouple Types:
  • J, K, T, E, B, R, S, N, C, D, L
• Cold Junction Compensation: Built-in CJC support
• Resolution: 16-bit analog conversion
• Isolation: Channel-to-channel and channel-to-backplane isolation
• Terminal Block: 20-pin removable terminal block
• Mounting: ControlLogix chassis slot mounting
• Operating Temperature: 0…60 °C

Advantages & Features

• 6-channel isolated temperature measurement
• Direct connection to thermocouple sensors
• High accuracy temperature monitoring
• Electrical isolation improves noise resistance
• Supports multiple thermocouple types for flexible applications
• Compatible with ControlLogix PLC systems
• Suitable for demanding industrial process environments

Applications

• Industrial temperature monitoring
• Process control systems
• Furnace and heating equipment
• Chemical and pharmaceutical equipment
• Power generation systems
• Machine temperature control
• Factory automation systems

Notes / Precautions

• Requires compatible ControlLogix 1756 chassis and controller
• Verify thermocouple type before configuration
• Use correct thermocouple extension wire
• Check cold junction compensation settings
• Confirm firmware compatibility before replacement
• This series module has been discontinued by Rockwell Automation; verify replacement compatibility if upgrading existing systems.