GE Fanuc HE693THM884 Thermocouple Input Module

Overview

The GE Fanuc HE693THM884 is an 8-channel thermocouple input module designed for precise temperature monitoring and control in industrial automation systems. This module is a part of the Series 90-30 PLC system, offering exceptional performance and reliability for process industries, factory automation, and utility applications. With a resolution of 0.1°C, it ensures accurate measurements, even in demanding environments. Although discontinued by the manufacturer, the module remains a robust solution for those needing accurate thermocouple input for temperature data collection and analysis.

Technical Specifications

General Specifications

• Model Number: HE693THM884

• Product Type: Thermocouple Input Module

• Category: PLC Module/Rack

• Subcategory: PLC Module

• Weight: 0.75 lbs  (0.5 kg)

• Power Consumption: 100 mA @ 5 VDC

• Dimensions: 3.6 × 13 × 13.5 cm

• Rack Compatibility: Series 90-30 PLC

Temperature & Measurement Specifications

• Number of Channels: 8 thermocouple input channels

• Supported Thermocouple Types:

• Type J: –210 °C to +760 °C

• Type K: –270 °C to +1372 °C

• Resolution: 0.1 °C increments

• Accuracy: High accuracy with 18-bit integrating A/D conversion

• A/D Conversion: 18-bit integrating type

• Conversion Time: Optimized for stable readings

• Scan Rate: 40 channels per second

Input & Diagnostics

• Input Impedance: >20 MΩ

• Common Mode Rejection: >100 dB

• Open-Circuit Detection: Drives input register to maximum value if thermocouple fails

• Fault Indication: Available via PLC registers

Environmental Ratings

• Operating Temperature: 0 °C to +60 °C

• Storage Temperature: –40 °C to +85 °C

• Humidity: 5–95% non-condensing

• Protection Class: IP20

FAQ

Q1: Is the GE Fanuc HE693THM884 still supported by the manufacturer?
No, this model has been discontinued by the manufacturer. However, Radwell offers a 2-year warranty and support for refurbished units.

Q2: What type of thermocouples does the HE693THM884 support?
The module supports Type J and Type K thermocouples, which are standard for most industrial temperature monitoring systems.

Q3: Can this module be used in a non-PLC setup?
No, the HE693THM884 is specifically designed for integration into the Series 90-30 PLC system. It is not compatible with other PLC platforms.

Q4: How does the open-circuit detection feature work?
If a thermocouple fails or becomes disconnected, the module detects the fault and drives the input register to its maximum value, ensuring continuous monitoring.

Q5: What is the scan rate of this module?
The HE693THM884 offers a scan rate of 40 channels per second, providing fast and accurate temperature readings.