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SKU: IC200ALG630

GE Fanuc IC200ALG630 VersaMax Analog Input Thermocouple Module

The GE Fanuc IC200ALG630 is an 8-channel VersaMax Analog Input Module designed for thermocouples (J, K, T, R, S) and millivolt signals. It features 16-bit resolution, Cold Junction Compensation, and high-voltage isolation for precise thermal monitoring in industrial PLC systems.

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High-Precision Thermal and Millivolt Data Acquisition

The GE Fanuc IC200ALG630 operates as a high-performance analog input interface within the VersaMax I/O family. This module captures precise temperature data by interfacing directly with five different thermocouple types and low-voltage millivolt signals. Because industrial processes often require exact thermal regulation, the IC200ALG630 utilizes an onboard 16-bit Analog-to-Digital Converter (ADC) to translate minute sensor voltages into accurate digital values. Consequently, the module ensures that the PLC receives granular data, enabling tighter control loops for furnaces, reactors, and cooling systems. Furthermore, the unit supports hot-swapping when used with a universal VersaMax carrier, allowing for maintenance without shutting down the entire control system.

Technical Specifications and Signal Compatibility

  • Manufacturer: GE Fanuc (Emerson Automation)
  • Model Number: IC200ALG630
  • Input Channels: 8 Differential Channels (7 available for user input when using CJC)
  • Resolution: 16-bit converter (ADC)
  • Thermocouple Types: Supports J, K, T, R, and S types
  • Millivolt Ranges: ±19.5mV, ±39mV, ±78mV, ±156mV, ±312mV, and ±625mV
  • Accuracy: ±0.15% for temperature; ±0.2% for voltage
  • Isolation: 250 VAC continuous; 1500 VAC transient
  • Update Rate: 60 ms (at 60 Hz) or 70 ms (at 50 Hz) per channel
  • Backplane Current Draw: 125 mA at 5V DC
  • Diagnostics: Open thermocouple detection and range alarms

Advanced Diagnostics and System Protection

The IC200ALG630 optimizes process safety by actively monitoring the integrity of every connected sensor. It features sophisticated diagnostic logic that triggers an alarm if it detects an open thermocouple or an out-of-range signal. Meanwhile, the module provides Cold Junction Compensation (CJC) through a thermistor, which compensates for ambient temperature fluctuations at the terminal base. Since industrial environments often suffer from electrical noise, the module incorporates significant galvanic isolation to protect the PLC backplane from field-side surges. Therefore, the IC200ALG630 functions as both a measurement tool and a protective barrier, maintaining high signal-to-noise ratios even in electrically “dirty” environments.

Primary Industrial Applications

  • Heat Treatment Furnaces: Monitoring multiple zones to ensure uniform temperature distribution during metal processing.
  • Chemical Reactors: Tracking exothermic reactions with high-speed thermocouple inputs to prevent thermal runaway.
  • Plastic Injection Molding: Maintaining precise barrel temperatures to ensure consistent product quality and material flow.
  • HVAC and Boiler Control: Integrating low-voltage millivolt sensors for pressure and temperature monitoring in large-scale utility plants.
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