Product Overview

The GE Fanuc IC670ALG630 is a self-calibrating thermocouple input module from the Field Control series. This microprocessor-based module receives thermocouple signals from 8 isolated inputs for conversion to digital form. Engineers use the IC670ALG630 to measure temperature from a wide range of thermocouple types. Its eight input channels support J, K, T, E, S, R, B, N, G, C, D, and Platinel II sensors. This module suits applications that need precise temperature monitoring in distributed control systems.

Technical Specifications

The GE Fanuc IC670ALG630 delivers flexible thermocouple input with high resolution.

• Number of Channels: Eight (8) isolated thermocouple inputs.
• Supported Thermocouple Types: J, K, T, E, S, R, B, N, G, C, D, and Platinel II.
• Millivolt Spans (±): 19.5 mV, 39 mV, 78.125 mV, 156.25 mV, 312.5 mV, and 625 mV.
• Converter Resolution: 15 bits plus sign.
• Data Type Used: Word data type (8 words input, 8 words output).
• Data Acquisition Rates: 2 selectable rates.
• Temperature Sensitivity (0 to 60°C): ±0.004% of reading, ±1.5 mV per °C referred to input.
• Maximum Voltage Between Channels: 250 VAC.
• Current Drawn from BIU: 195 mA maximum.
• External Power Required: No (power supplied from BIU).
• Fault Detection: Open thermocouple, over/under range, and high/low alarm.
• Status Indicator: One (1) front panel LED.

Thermocouple Types and Input Configuration

The GE Fanuc IC670ALG630 supports a wide variety of thermocouple sensor types. Standard types include J, K, T, E, S, R, B, and N thermocouples. Exotic types include G, C, D, and Platinel II thermocouples for special applications. Each of the 8 input channels can be configured independently. You can set each channel to report sensor readings as temperature in degrees. You can also configure any channel to report raw millivolt readings instead. Millivolt spans range from ±19.5 mV up to ±625 mV for flexibility. The IC670ALG630 has 8 words of analog input data and 8 words of analog output data. This data structure supports detailed temperature monitoring for each channel.

Measurement Accuracy and Resolution

This thermocouple input module provides high-resolution temperature measurement. Converter resolution reaches 15 bits plus sign for precise analog to digital conversion. The module performs A/D calibration on itself at each power-up. This self-calibration ensures accurate readings without manual adjustment. Temperature sensitivity stays at ±0.004% of reading from 0 to 60°C. Additional sensitivity of ±1.5 mV per °C referred to input ensures stable operation. The GE Fanuc IC670ALG630 can detect temperature changes down to one tenth of a degree.  Two selectable data acquisition rates allow you to balance speed and noise rejection. The optically-coupled multiplexer circuitry extracts analog signal readings for the ADC.

Field Control Station Integration

The GE Fanuc IC670ALG630 integrates into a Field Control station with a Bus Interface Unit (BIU). The complete I/O data exchange process is handled by the bus interface module. Up to 8 Field Control modules can connect to a single BIU. This means one BIU can process up to 64 independent thermocouple signals. Configuration of the reference parameters for each module stores in the BIU. You can customize the configuration using a proprietary handheld programmer. The IC670ALG630 draws 195 mA of maximum current from the BIU power supply. No external power supply is required for module operation. The module can be wired directly to the I/O terminal block where it is installed.

Fault Detection and Diagnostic Features

The GE Fanuc IC670ALG630 performs a variety of diagnostics for quick error detection. The module detects open thermocouple conditions on any input channel. Over-range and under-range detection identifies signals outside expected values. Configurable high and low alarm levels trigger when temperature limits are exceeded. The module provides diagnostic data to the bus interface unit for analysis. This diagnostic information helps maintenance teams find problems quickly. The IC670ALG630 has one LED light on the front side that indicates status. A steady on LED means the module is operating properly. An off LED means there is no power to the module. A blinking LED indicates a system fault that needs attention.

Installation and Environmental Guidelines

Mount the GE Fanuc IC670ALG630 inside a protective enclosure for safe operation. The module has an open construction with an IP20 protection rating from the factory. Operating temperature ranges from 0°C to 55°C (32°F to 131°F). Keep the module at a tolerable distance from heat sources it is measuring. Maximum voltage between any two channels reaches 250 VAC for isolation protection. The IC670ALG630 can be wired directly to the I/O terminal block where it is installed. Use shielded thermocouple extension wire for best accuracy on long runs. Cold junction compensation is handled internally by the module. Proper grounding reduces noise and ensures stable temperature readings. The small form factor allows high channel density in control cabinets.

Package Contents

When you unbox the GE Fanuc IC670ALG630, you will find these items:

• 1 x GE Fanuc IC670ALG630 Field Control thermocouple input module.
• 1 x Terminal block for thermocouple field wiring connections.
• 1 x Product label and identification tag.
• 1 x Quick reference installation guide.

Frequently Asked Questions (FAQ)

How many channels does the IC670ALG630 have?

The **IC670ALG630** has eight (8) isolated thermocouple input channels. Each channel can be configured individually for different thermocouple types.

What thermocouple types work with the GE Fanuc IC670ALG630?

This module supports J, K, T, E, S, R, B, N, G, C, D, and Platinel II thermocouples. This wide range covers most industrial temperature measurement needs.

Does the IC670ALG630 require external power?

No, the **IC670ALG630** does not require external power to operate. All power is supplied from the bus interface unit (BIU) at 195 mA maximum.

What diagnostic features does the IC670ALG630 include?

The **IC670ALG630** detects open thermocouple, over-range, under-range, high alarm, and low alarm conditions. It provides diagnostic data to the BIU for error detection.

What does the front LED on the IC670ALG630 indicate?

A steady on LED means the module is operating properly. An off LED means no power. A blinking LED indicates a system fault in the **IC670ALG630** module.