Description
Product Model: GE IC697ALG230G
Product Brand: GE Automation / GE Fanuc / Emerson Automation
Product Series: Series 90-70 PLC Modules
Product Features:
• Eight differential analog input channels configurable for voltage or current signals for versatile industrial signal conditioning.
• High precision data acquisition with 16-bit resolution, suitable for demanding control and process monitoring tasks.
• User-configurable scaling per channel and removable terminal block for ease of wiring and commissioning.
• Fast update rates with robust transient protection, supporting reliable operation in harsh environments.
Technical Specifications
| Specification | Detail |
|---|---|
| Model | GE IC697ALG230G |
| Series | Series 90-70 PLC Modules |
| Module Type | Analog Input Base Converter Module |
| Number of Inputs | 8 Differential Channels |
| Input Signal Types | Voltage: −10VDC to +10VDC; Current: 4–20 mA |
| Resolution | 16 bits |
| Update Rate | ~2.4 ms to 2.8 ms |
| Wiring Configuration | Differential |
| Calibration | Channel-specific user scaling |
| Terminal Connections | Removable terminal block |
| Power Requirement | +5V DC (backplane supplied) |
| Operating Temperature | 0°C to +60°C (typical industrial) |
| Backplane Interface | GE Series 90-70 PLC backplane |
| Expandability | Supports Expander Modules (e.g., IC697ALG440/441) |
- IC697ALG230G
Product Role & System Fit
The GE IC697ALG230G occupies a critical role in Series 90-70 automation systems as a base converter analog input module. Designed to convert real-world analog signals into digital data usable by a programmable controller, this module bridges the gap between industrial sensors and the central logic of PLC applications. In PLC architectures, analog inputs represent physical quantities such as temperature, pressure, flow, and level; the IC697ALG230G ensures these signals are accurately captured and communicated to the CPU for logical processing and control decisions.
Unlike basic digital I/O modules, which only sense on/off states, the GE IC697ALG230G handles continuous analog measurements. It supports both current loops (standard 4–20 mA) and bipolar voltage ranges (typically −10 V to +10 V), making it versatile enough for a wide range of industrial sensors and transducers. Each of its eight differential input channels can be independently configured for current or voltage modes, allowing system designers to tailor the module’s behavior to the exact requirements of the application — for example, using some channels for pressure transducers while others read thermocouples with associated signal converters.
Within the GE Series 90-70 PLC platform, the base converter functions as part of a larger analog subsystem. Additional expander modules (such as IC697ALG440 for current expansion and IC697ALG441 for voltage expansion) can be attached to the base converter module to increase the total number of analog inputs, enabling scalable deployments in more complex applications. This modular expansion capability maximizes flexibility without requiring extensive architectural redesigns.
While this module may be considered legacy compared with modern PLC families (such as PACSystems RX3i), it remains widely used in existing installations today. In brownfield automation systems, components like the GE IC697ALG230G are often maintained to preserve continuity of operations during equipment life cycles that can span decades; integrating them alongside newer controllers is a common practice among experienced automation engineers.




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