GE PACSystems RX3i IC695ALG626 – Analog Input Module for Precise Industrial Signal Acquisition

The IC695ALG626 sits in the GE PACSystems RX3i rack and, in most cases, serves as a multi‑channel analog input module for voltage and 4–20 mA current signals. From my experience with RX3i installations, this model is chosen when teams want stable, noise‑resistant measurements and straightforward integration with existing RX3i CPUs and networks. You might notice that it simplifies panel wiring and channel configuration, which typically speeds up commissioning on process lines, test stands, and machine tools.

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Key Features

• Designed for RX3i backplane – Seamlessly integrates with IC695 CPUs and network modules through the RX3i rack, so no extra interface cards are needed.
• Multi‑channel analog input – Typically supports multiple voltage and 4–20 mA channels, helping reduce rack footprint in dense I/O panels.
• Configurable ranges – It appears that standard ranges like 0–10 V, ±10 V, and 0/4–20 mA can be selected per channel for mixed‑signal applications.
• Industrial‑grade filtering – From my experience, RX3i analog modules offer digital filtering that smooths noisy signals in high‑EMI environments.
• Diagnostics – Channel status and fault flags typically help maintenance teams spot wiring errors or sensor issues quickly.
• Field‑friendly wiring – Removable terminal block makes swaps easier during downtime; labeling stays clean and serviceable.
• Serviceability – In many cases, RX3i I/O supports online replacement when the CPU and application allow, minimizing system interruption.

Technical Specifications

Related or Supporting Products

• IC695CHS012 / IC695CHS016 / IC695CHS007 – RX3i rack chassis (12/16/7‑slot). Choose based on I/O count and panel space.
• IC695PSA040 / IC695PSD040 – RX3i power supplies (AC or DC). Sized to your backplane load.
• IC695CPU310 / IC695CPU320 – RX3i CPUs with ample memory and logic scan performance for mixed analog/digital systems.
• IC695ETM001 – RX3i Ethernet module for plant network integration and remote diagnostics.
• IC695ALG616 – RX3i analog input module with higher channel density in many cases; useful when you need more AI points per slot.
• IC695ALG708 – RX3i analog output module; pair with the IC695ALG626 when closed‑loop control requires analog actuation.

Installation & Maintenance

• Panel & cabinet: Mount the IC695CHS rack on a grounded backplate with adequate ventilation. Maintain typical 50 mm clearance above/below for airflow.
• Wiring practices: Use shielded twisted pair for analog runs. Land shields at a single ground point to avoid loops; separate analog from high‑voltage and VFD cabling.
• Power budget: Verify the RX3i power supply capacity for the total rack load. Add margin for future expansion.
• Configuration: Set channel ranges and filters in the PACSystems programming environment. Validate scaling with a known reference signal.
• Safety: De‑energize field loops before servicing. If performing online replacement, follow GE RX3i procedures and confirm the controller mode supports it.
• Routine maintenance: Periodically retorque terminals, clean dust with dry air, and review diagnostics. Annual verification of analog scaling and, if needed, recalibration is recommended.
• Firmware/software: Keep the PACSystems programming tools and CPU firmware aligned. In many cases, updated tools improve diagnostics and stability.

Quality & Certifications

• Certifications: CE, UL/cUL, and RoHS compliance are typical across the PACSystems RX3i range for global deployment.
• Warranty: 365 days from delivery; replacement or repair support during the warranty period.
• Traceability: Each unit is inspected and function‑tested; serial and revision details recorded before shipment.