GE PACSystems RX3i Modules

Technical Dossier

Product Details And Specifications

GE PACSystems RX3i Series: Comprehensive Module Range and Technical Overview

The GE PACSystems RX3i platform is one of the most widely deployed programmable automation controller (PAC) architectures in global heavy industry. Installed across petrochemical complexes, nuclear power stations, offshore oil & gas platforms, and continuous-process refineries, the RX3i backplane-based architecture provides deterministic control with high-availability redundancy options. Its universal backplane accepts both legacy Series 90-30 I/O modules and native RX3i modules, making it the preferred migration path for facilities that cannot afford full system replacement. The IC695PSD040CA is a 40W AC/DC power supply module rated for 120/240VAC input, delivering regulated 5VDC and 3.3VDC rails to the RX3i universal backplane — a critical infrastructure component in any RX3i rack assembly.

The Evolution of PACSystems RX3i Architecture

GE introduced the PACSystems RX3i platform in the early 2000s as a successor to the Series 90-70 and Series 90-30 families. The core design principle was backward I/O compatibility: the universal backplane (IC695CHS012, IC695CHS016) accepts legacy 90-30 modules in dedicated slots while native RX3i modules occupy the high-speed PCI backplane bus. Early CPU modules (IC695CPU310, IC695CPU315) operated at 300–500MHz with 10–64MB user memory. The mid-generation refresh introduced the IC695CPU320 and IC695CPE302, adding Ethernet-embedded ports and expanded motion control. The current generation — IC695CPE330, IC695CPE400 — integrates dual Gigabit Ethernet, USB programming ports, and supports IEC 61131-3 structured text natively. Power supply evolution followed a parallel track: early 40W units (IC695PSD040) were replaced by the CA-suffix revision (IC695PSD040CA) with improved EMI filtering and CE/UL compliance updates. The 40W and 80W (IC695PSA040, IC695PSA080) AC variants remain the dominant installed base across facilities built between 2003 and 2018. Facilities running pre-CA suffix hardware face increasing obsolescence risk as GE (now Emerson) has transitioned primary support to the RSTi-EP and CPE400 lines.

PACSystems RX3i Full Catalog & Functionalities (SKU List)

Power Supply Modules

• IC695PSD040CA: 40W AC/DC power supply, 120/240VAC input, 5VDC/3.3VDC output, universal backplane
• IC695PSA040: 40W AC-only power supply, 120/240VAC, standard RX3i rack
• IC695PSA080: 80W AC power supply, high-load rack configurations, dual-rail output
• IC695PSD040: 40W AC/DC power supply, predecessor to CA revision, legacy installations

CPU & Controller Modules

• IC695CPU310: Base CPU, 10MB user memory, single Ethernet port via adapter
• IC695CPU315: Mid-range CPU, 64MB user memory, expanded I/O scan rate
• IC695CPU320: Enhanced CPU, 64MB, motion control support, redundancy-capable
• IC695CPE302: Embedded dual-port Ethernet CPU, USB programming, 64MB
• IC695CPE305: 5-slot embedded Ethernet CPU, IEC 61131-3, 64MB user memory
• IC695CPE330: High-performance CPU, dual GbE, 128MB, supports C toolkit
• IC695CPE400: Current-generation CPU, dual GbE, 256MB, IEC 61131-3 full suite

Analog I/O Modules

• IC695ALG600: 8-channel universal analog input, 4–20mA / 0–10V configurable per channel
• IC695ALG608: 8-channel analog input, high-speed, 16-bit resolution
• IC695ALG616: 16-channel analog input, mixed voltage/current, field-configurable
• IC695ALG704: 4-channel analog output, 0–20mA / 0–10V, 16-bit DAC
• IC695ALG728: 8-channel analog output, high-resolution, process control applications

Digital I/O Modules

• IC695MDL654: 32-channel 24VDC digital input, source/sink configurable
• IC695MDL664: 32-channel 24VDC digital output, 0.5A per point, protected outputs
• IC695MDL740: 16-channel relay output, 2A per point, isolated commons

Communications & Network Modules

• IC695ETM001: Ethernet interface module, 10/100 Mbps, SRTP/Modbus TCP
• IC695PBM300: PROFIBUS DP master module, up to 125 slave devices
• IC695CMM002: Serial communications module, RS-232/RS-485, dual-port

Backplane & Rack

• IC695CHS012: 12-slot universal backplane, accepts RX3i and legacy 90-30 modules
• IC695CHS016: 16-slot universal backplane, maximum I/O density configuration

Sourcing Hard-to-Find & Obsolete PACSystems RX3i Parts

GE Automation (now operating under Emerson's control systems portfolio) has progressively moved active development to the RSTi-EP and CPE400 platforms. As a result, a significant portion of the RX3i catalog — including the IC695PSD040CA, IC695CPU310, IC695CPU315, and first-generation analog modules — has entered end-of-active-support status. Facilities operating these systems face a binary choice: full platform migration (capital-intensive, requiring re-engineering of all ladder logic and HMI interfaces) or lifecycle extension through verified spare parts sourcing. DriveKNMS maintains a dedicated inventory of RX3i modules sourced from decommissioned plant equipment, authorized distributor overstock, and factory-refurbished units. All IC695-series modules are stored in ESD-safe environments with climate control. For critical infrastructure operators requiring long-term supply agreements (LTA) covering 3–10 year maintenance windows, DriveKNMS provides documented sourcing commitments with traceability records. Inquiries for bulk quantities, emergency same-day dispatch, or cross-reference to alternative compatible part numbers are handled directly by our technical sales team.

Quality Control for the PACSystems RX3i Range

RX3i modules present specific test challenges due to their dual-bus architecture: the legacy ISA-compatible I/O bus and the high-speed PCI backplane bus must both be validated independently. DriveKNMS applies the following test protocol to all IC695-series modules prior to dispatch. Power supply modules (IC695PSD040CA, IC695PSA040, IC695PSA080) undergo full-load burn-in at 100% rated current for 48 hours with output ripple measurement on both 5VDC and 3.3VDC rails. CPU modules are tested in a live RX3i rack with a reference backplane (IC695CHS012), executing a standardized ladder logic program that exercises all memory regions, Ethernet ports, and USB interfaces. Analog I/O modules are calibrated against a NIST-traceable reference instrument with linearity verification across the full input/output range. Digital I/O modules are cycled through 10,000 switching operations with contact resistance measurement on relay output variants. All modules are tested for backplane communication integrity using GE's Proficy Machine Edition diagnostic suite before packaging.

For sourcing inquiries, technical cross-references, or long-term supply agreements for GE PACSystems RX3i modules:

• Email: sale@driveknms.com
• WhatsApp: +86 18359293191
• Web: driveknms.com

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