Configured for direct high-resolution millivolt signal conversion in ControlLogix backplane environments, the Allen-Bradley 1756-IT6I (1756IT6I Isolated Thermocouple Module) provides direct physical/electrical execution.

Module Configuration & Sensor Support

• Primary Part Number: 1756-IT6I
• Alternate Catalog Designation: 1756IT6I
• Chassis Platform: ControlLogix Systems
• Channel Architecture: 6 Individually Isolated Thermocouple Input Channels
• Reference Junction: 1 Cold Junction Compensation (CJC) Interface
• Compatible Sensors: B, C, E, J, K, N, R, S, T Types

Operational Specifications & Physical Characteristics

Deterministic Communication & Deterministic Networks

The 1756-IT6I transfers sampled analog temperature data across the chassis backplane while maintaining predictable backplane bus communication velocity. High internal scanning rates maintain firmware flash compatibility with ControlLogix processors across EtherNet/IP deterministic networks.

Standard Package Contents

• 1 x Allen-Bradley 1756-IT6I Module Assembly
• 1 x Product Installation Instruction Guide

Mechanical Mounting & Shielding Procedures

• Backplane Insertion: Align board keys with the target ControlLogix chassis slot and push firmly until top and bottom latches secure the module.
• Terminal Block Setup: Seat either a 1756-TBNH screw-clamp or 1756-TBSH spring-clamp removable terminal block onto the front housing.
• Signal Shielding: Ground thermocouple signal wire shields at a single point to minimize electrical interference and offset voltages.

Frequently Asked Questions

• Q: What thermocouple sensor types are supported by the 1756-IT6I module?

  The input channels accept B, C, E, J, K, N, R, S, and T type thermocouple sensor inputs.

• Q: What is the backplane current draw at 5 VDC for the 1756-IT6I card?

  The hardware draws 250 mA from the 5 VDC backplane supply bus during standard execution.

• Q: What removable terminal block models match the 1756-IT6I physical interface?

  The module accommodates either 1756-TBNH screw-clamp or 1756-TBSH spring-clamp terminal blocks.

• Q: How many cold junction compensation sensors does the 1756-IT6I support?

  The module integrates 1 dedicated CJC sensor channel to perform cold junction temperature compensation.

• Q: What is the maximum internal power dissipation rating for this hardware?

  The thermal design rating allows a maximum internal power dissipation of 4.3 W.

• Q: Are input channels electrically isolated from each other on the 1756-IT6I?

  Yes, each of the 6 thermocouple input channels features individual channel-to-channel isolation.

• Q: Can the 1756-IT6I module be removed under backplane power?

  Yes, the module supports Removal and Insertion Under Power (RIUP) in non-hazardous locations.

• Q: What is the backplane current draw from the 24 VDC bus?

  The module draws a nominal 2 mA current from the 24 VDC backplane bus line.