GE RX3i IC695ALG626: Analog Input HART Module –

Technical Dossier

Product Details And Specifications

GE RX3i IC695 Series: Comprehensive Module Range and Technical Overview

The GE PACSystems RX3i IC695 series represents one of the most widely deployed distributed control architectures in global heavy industry. Installed across petrochemical refineries, nuclear power generation facilities, offshore platforms, LNG terminals, and continuous-process chemical plants, the IC695 backplane ecosystem has accumulated decades of field-proven reliability. Its universal backplane architecture — supporting mixed analog, digital, motion, and communications modules in a single chassis — made it the preferred platform for brownfield upgrades from legacy Series 90-70 and Series 90-30 systems. As of 2026, the IC695 series is in a mature/end-of-active-development phase; GE Vernova continues to supply spare parts and firmware support, but new feature development has migrated to the CPE400/CPL410 edge controller platform. For facilities running long-term maintenance contracts on existing RX3i infrastructure, sourcing certified spare modules is a critical operational priority.

The Evolution of IC695 Architecture

The PACSystems RX3i platform was introduced in the mid-2000s as GE Fanuc's answer to the demand for a unified, high-throughput PLC/DCS hybrid. The IC695 designation identifies modules designed for the RX3i universal backplane (IC695CHS012, IC695CHS016), which operates on a dual-bus architecture: a legacy 32-bit serial backplane for backward compatibility with IC694/IC693 modules, and a high-speed PCI-based backplane for native RX3i modules. Early IC695 CPUs (IC695CPU310, IC695CPU320) supported up to 10 MB of user memory. Subsequent generations introduced the IC695CPE302 and IC695CPE305 with expanded Ethernet ports and IEC 61131-3 structured text support. The IC695ALG626 itself belongs to the analog I/O generation that introduced HART (Highway Addressable Remote Transducer) protocol pass-through, enabling field device diagnostics without additional wiring infrastructure — a significant advancement for process industries requiring NAMUR NE107 compliance. Compatibility note: IC695 analog modules are not backward-compatible with IC694 backplanes without a carrier adapter.

IC695 Full Catalog & Functionalities (SKU List)

Analog Input Modules

• IC695ALG626: 8-ch isolated analog input, HART pass-through, 4–20 mA / 0–10 V, 16-bit resolution
• IC695ALG628: 16-ch analog input with HART, high-density process signal acquisition
• IC695ALG600: 8-ch analog voltage/current input, non-isolated, standard process range
• IC695ALG608: 8-ch isolated analog input, no HART, legacy process interface
• IC695ALG616: 16-ch analog input, non-isolated, high-channel-count applications

Analog Output Modules

• IC695ALG704: 4-ch isolated analog output, HART pass-through, 4–20 mA, 16-bit DAC
• IC695ALG708: 8-ch analog output with HART, valve positioner and actuator control
• IC695ALG700: 4-ch analog current output, non-isolated, standard control loops

Digital Input Modules

• IC695MDL654: 32-ch 24 VDC positive/negative logic digital input, high-density DI
• IC695MDL632: 16-ch 125 VDC digital input, high-voltage field interface
• IC695MDL648: 16-ch 24 VDC digital input, standard logic interface

Digital Output Modules

• IC695MDL754: 32-ch 12/24 VDC digital output, 0.5 A per channel, sourcing
• IC695MDL752: 16-ch 12/24 VDC digital output, relay-compatible logic drive
• IC695MDL740: 16-ch relay output, 2 A per channel, dry contact switching

CPU & Controller Modules

• IC695CPE302: Dual-port Ethernet CPU, 10 MB user memory, IEC 61131-3, primary rack controller
• IC695CPE305: Enhanced CPU, 5-port managed Ethernet switch integrated, PROFINET IO controller
• IC695CPU320: Legacy RX3i CPU, 10 MB memory, single Ethernet port, brownfield replacement unit

Communications & Network Adapters

• IC695ETM001: Ethernet interface module, 10/100 Mbps, SRTP/Modbus TCP, remote I/O expansion
• IC695PBM300: PROFIBUS DP master module, up to 125 slave devices, process network integration
• IC695CMM002: Serial communications module, RS-232/RS-485, DNP3/Modbus RTU support

Power Supply Modules

• IC695PSA040: 40 W AC power supply, 120/240 VAC input, RX3i backplane power
• IC695PSD040: 40 W DC power supply, 24 VDC input, panel-mount DIN rail applications

Sourcing Hard-to-Find & Obsolete IC695 Parts

As the IC695 series transitions into its end-of-active-manufacturing phase, procurement teams at refineries, utilities, and chemical plants face increasing lead times from OEM channels — often 16–52 weeks for low-volume analog modules. DriveKNMS maintains a dedicated inventory of IC695 spare modules sourced from decommissioned systems, certified refurbishment programs, and authorized distributor overstock. All units are verified against GE's original firmware revision matrices to ensure backplane compatibility. For the IC695ALG626 specifically, DriveKNMS stocks units across multiple hardware revisions (Rev A through Rev D) to match existing installed base configurations. Customers operating under ISA-18.2 or IEC 61511 functional safety frameworks can request traceability documentation upon order. Emergency same-day quotation is available for shutdown-critical procurement scenarios.

Quality Control for the IC695 Range

IC695 analog modules present specific test challenges due to their isolated backplane interface and HART modem circuitry. DriveKNMS applies a multi-stage verification protocol to all IC695ALG626 and related analog modules: (1) Backplane bus continuity test — verifies PCI and serial backplane connector integrity using a dedicated RX3i test chassis; (2) Channel-by-channel analog calibration — each of the 8 input channels is swept across the full 4–20 mA and 0–10 V range using a Fluke 725 calibrator, with deviation logged against GE's published ±0.1% accuracy specification; (3) HART communication verification — a HART master device interrogates each channel to confirm modem response at 1200 baud FSK; (4) Isolation resistance test — channel-to-channel and channel-to-backplane isolation verified at 500 VDC; (5) Thermal burn-in — 48-hour powered soak at 50°C ambient to screen latent component failures. Modules passing all five stages are issued a DriveKNMS test certificate with technician ID and date stamp.