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The IC670ALG620 is a high-precision analog input module from the GE Field Control product family, specifically designed for temperature monitoring using RTD sensors. The module supports up to four independent RTD inputs, enabling accurate...
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The IC670ALG620 is a high-precision analog input module from the GE Field Control product family, specifically designed for temperature monitoring using RTD sensors. The module supports up to four independent RTD inputs, enabling accurate thermal measurement across multiple process points in industrial automation systems.
It is compatible with both 3-wire and 4-wire RTD configurations, supporting a wide range of resistance temperature detectors including platinum, nickel, nickel-iron, and copper elements. This flexibility allows the module to integrate seamlessly with various industrial temperature sensing standards.
Built for demanding environments, the IC670ALG620 performs real-time analog-to-digital conversion, delivering precise temperature or raw resistance data directly to the control system. The module also integrates advanced diagnostics such as automatic recalibration during power-up and continuous monitoring for open circuits, short circuits, and out-of-range signal conditions. Additionally, the module provides internal excitation current, eliminating the need for external loop power supplies and simplifying field wiring.
| Parameter | Specification |
|---|---|
| Model Number | IC670ALG620 |
| Product Series | Field Control |
| Channel Density | 4 Independent RTD Input Channels |
| Sensor Compatibility | 3-wire and 4-wire RTDs (Platinum, Nickel, Ni-Fe, Copper) |
| Resistance Ranges | 0–500 Ω; 0–3000 Ω |
| Resolution | Configurable (Ohms, °C, °F) |
| Line Frequency Rejection | Selectable 50 Hz / 60 Hz |
| Excitation Current | Internal module-supplied |
| Operating Temperature | -20°C to 60°C |
The IC670ALG620 maintains measurement accuracy through continuous hardware diagnostics and calibration processes. During startup, the module automatically performs a self-calibration routine to compensate for environmental variations and maintain long-term measurement stability.
The module continuously monitors signal integrity and will immediately report alarm conditions if input values exceed predefined thresholds. Diagnostic capabilities detect open circuits, short circuits, and signal range violations, allowing maintenance teams to quickly identify sensor or wiring issues.
Its modular Field Control architecture allows high-density installations and straightforward system expansion, making it well suited for distributed I/O applications in large-scale industrial control systems.
Does the IC670ALG620 require external resistors for RTD excitation?
No. The module provides the excitation current internally, allowing direct connection of both 3-wire and 4-wire RTD sensors without additional external components.
Can the module switch between temperature and resistance measurements?
Yes. Each input channel can be individually configured to output measurement data either as raw resistance (ohms) or calculated temperature values (°C or °F) depending on the application requirements.
