The 1797-IRT8 AB Thermocouple I/O Module is an 8-channel FLEX Ex I/O module designed for RTD and thermocouple signals in hazardous areas. It features a configurable internal bus, a fast 8ms settling time, and processes signals in the 40-100 mV range.

FAQ

Q1: What is the main function of the Allen-Bradley 1797-IRT8?

A1: It is a Flex Ex thermocouple and RTD input module designed with 8 configurable channels for process signal acquisition.

Q2: What are its key operating specifications?

A2: It operates with a signal range of -40 to 100 mV and 0-485 ohms, a settling time of 8ms, and requires <9.5V DC power supply.

Q3: What environmental and mounting features does it have?

A3: It has an IP20 indoor enclosure, supports DIN rail or panel mounting, and operates within -4 to 158°F at 5-95% non-condensing humidity.

Q4: What certifications does this module hold?

A4: It is certified with C/US, UL, C-Tick, and marine-GL standards for compliance and safety.

Q5: What diagnostic indicators are available on the module?

A5: It includes 8 red fault indicators (one per channel) and 1 green module power indicator for status monitoring.

Specifications Summary

• Module Type: FLEX Ex RTD/thermocouple I/O module for hazardous locations.

• Input Channels: 8 configurable input channels.

• Signal Range: Accepts inputs of 40 to 100 millivolts.

• Power Supply: Operates on 9.5 V DC, with field-side consumption of 1.6W.

• Response Time: Features a fast settling time of 8 milliseconds.

• Thermal Rating: Maximum power dissipation is 15W (approx. 5.46 BTU/hr).