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GE IC694ALG221A is a high-precision 4-channel analog input module designed for GE Fanuc’s RX3i PACSystem, offering reliable signal acquisition for industrial automation and process control applications. Engineered to convert analog current signals into digital data for PLCs, the GE IC694ALG221A supports input ranges of 4–20 mA (default) and 0–20 mA, making it suitable for diverse sensor types, including pressure transmitters, flow meters, and temperature transducers. Its 12-bit resolution and 0.1% full-scale accuracy ensure precise measurements, while a 2-millisecond update rate enables real-time monitoring of dynamic processes. The module features optical isolation between field wiring and the backplane, protecting against electromagnetic interference (EMI) and voltage spikes up to 200V common-mode, ensuring stable operation in harsh industrial environments.
As part of GE’s RX3i platform, the GE IC694ALG221A integrates seamlessly with other modules in the series, such as CPUs, communication cards, and output modules, to form scalable automation systems. Its compact design allows installation in any I/O slot of the RX3i backplane, with power requirements of 25 mA from the 5V DC backplane bus and 100 mA from an isolated 24V DC supply. The module’s dual-range capability, achieved via jumper settings for channels 1–2 and 3–4, simplifies configuration for different sensor outputs, reducing the need for external signal conditioning. This flexibility, combined with its robust construction, makes the GE IC694ALG221A a preferred choice for industries requiring reliable analog data acquisition.
Technical Specifications
| Product model | GE IC694ALG221A |
|---|---|
| Manufacturer | GE Fanuc |
| Product type | 4-channel analog input module |
| Input signal range | 4–20 mA (default), 0–20 mA (jumper-selectable) |
| Resolution | 12 bits (4 μA per count at 4–20 mA; 5 μA per count at 0–20 mA) |
| Accuracy | ±0.1% of full scale |
| Update rate | 2 milliseconds (all channels) |
| Input impedance | 250 Ω |
| Common-mode voltage protection | 200V DC/AC |
| Isolation | Optical isolation (250V AC continuous, 1500V AC for 1 minute) |
| Power consumption | 25 mA @ +5V DC (backplane), 100 mA @ +24V DC (isolated) |
| Physical dimensions | 3.5 in (W) × 5.25 in (H) × 8.5 in (D) (estimated for RX3i modules) |
| Weight | 2.2 lbs (estimated for RX3i modules) |
| Operating temperature | 0°C to 60°C |
| Installation | Single slot in RX3i backplane |
IC694ALG221A
Related Products
- GE IC694ALG221B: A revised version of the GE IC694ALG221A with similar specifications, offering compatibility and interchangeability in RX3i systems.
- GE IC694APU300: A high-speed counter module for frequency-based measurements, often paired with the GE IC694ALG221A in applications requiring both analog and digital input processing.
- GE IC694MDL754: A 32-point discrete output module that works with the GE IC694ALG221A to control actuators based on analog input data.
- GE IC694CPU351: A CPU module for the RX3i platform, providing processing power to interpret data from the GE IC694ALG221A and execute control logic.
- GE IC694CMM301: A communication module that enhances the GE IC694ALG221A by enabling data transmission to HMIs or other PLCs over the Genius network.
- GE IC694MDL645: A 16-point analog input module with higher channel density, suitable for systems requiring additional analog channels alongside the GE IC694ALG221A.
Main Features and Advantages
High Precision and Resolution: The GE IC694ALG221A’s 12-bit resolution and 0.1% accuracy ensure precise conversion of analog signals, critical for applications like pharmaceutical batch processing or chemical dosing where minor errors can affect product quality. Its 4 μA resolution at 4–20 mA allows detection of subtle changes in sensor outputs, enabling proactive maintenance and process optimization.
Dual-Range Flexibility: With jumper-selectable input ranges (4–20 mA/0–20 mA), the module adapts to different sensor types without additional hardware. This reduces inventory complexity and installation time, as a single module can accommodate both standard industrial sensors (4–20 mA) and custom devices (0–20 mA).
Fast Update Rate: The 2-millisecond update rate ensures real-time data availability, making the GE IC694ALG221A ideal for dynamic processes like conveyor belt speed control or turbine monitoring, where timely adjustments are essential to prevent downtime.
Robust Isolation and Protection: Optical isolation between field wiring and the backplane safeguards against EMI and voltage transients, while 200V common-mode protection prevents damage from ground loops or faulty sensors. This reliability is crucial in environments with high electrical noise, such as power plants or manufacturing facilities.
Seamless Integration: As a native RX3i module, the GE IC694ALG221A plugs directly into the backplane without compatibility issues, simplifying system expansion. Its low power consumption (25 mA at 5V DC) minimizes strain on the power supply, even in densely populated racks.
User-Friendly Configuration: Removable terminal blocks and jumper settings allow quick field wiring and range adjustments, reducing setup time. LED indicators provide real-time status updates, aiding in troubleshooting and maintenance.
IC694ALG221A
Installation and Maintenance
Pre-installation Preparations: Before installing the GE IC694ALG221A, ensure the RX3i backplane is powered off and securely mounted. Verify that the input signal type (4–20 mA or 0–20 mA) matches the jumper settings for each channel pair. Connect shielded twisted-pair cables to the module’s terminals to minimize noise, grounding the shield to either the COM or GND terminal. Confirm that the total power consumption of all modules in the rack does not exceed the capacity of the connected power supply (e.g., GE IC693PWR330J).
Maintenance Suggestions: Regularly inspect the GE IC694ALG221A for loose connections or physical damage. Use a multimeter to check the 5V DC backplane voltage and the isolated 24V DC supply. Clean the module and terminal blocks to prevent dust accumulation, which can affect heat dissipation. Monitor the module’s LED indicators for status updates—solid green indicates normal operation, while red signals a fault. For persistent issues, consult the diagnostic logs in the PLC software. Avoid internal repairs, as this may void the warranty; instead, contact GE’s technical support for replacement or repair.
Application Fields
The GE IC694ALG221A is widely used in industries requiring accurate analog data acquisition:
- Manufacturing: In automotive assembly lines, the module monitors pressure sensors in robotic arms and flow meters in paint dispensing systems, ensuring precision and consistency. Its fast update rate supports real-time adjustments to production parameters.
- Oil and Gas: In offshore platforms, the GE IC694ALG221A processes signals from pressure transmitters in wellhead systems and temperature sensors in pipeline heaters, enabling predictive maintenance and leak detection.
- Power Generation: The module measures analog signals from turbine vibration sensors and generator voltage regulators in power plants, contributing to efficient energy production and grid stability.
- Water Treatment: In wastewater facilities, the GE IC694ALG221A monitors pH levels and dissolved oxygen concentrations, adjusting chemical dosing pumps to meet environmental standards.
- Pharmaceuticals: The module’s high accuracy supports batch processing by measuring ingredient levels in reactors, ensuring compliance with strict quality control regulations.
IC694ALG221A
Product Guarantee
Our company offers a one-year quality warranty service for the GE IC694ALG221A, covering hardware malfunctions not caused by human factors. During the warranty period, if the module shows abnormal performance or functional failure, we will provide replacement services. For discontinued models or urgent demands, our global supply chain network ensures quick response to procurement needs for scarce spare parts, supporting the continuous and stable operation of industrial systems.
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E-mail: sales@ygplc.com
E-mail: sales@ygplc.com
