GE IC695PMM335 PACSystems RX3i Controller Module

Technical Dossier

Product Details And Specifications

GE PACSystems RX3i Series Technical Notes

The GE PACSystems RX3i platform is a high-performance programmable automation controller (PAC) series deployed across global heavy industry sectors including petrochemical plants, nuclear power facilities, oil refineries, and continuous process manufacturing. The IC695PMM335 is a Motion Mate Module within the RX3i backplane architecture, providing coordinated multi-axis motion control integrated directly into the PAC environment. The RX3i series holds a dominant installed base in North American process industries and has been widely adopted in European and Asian industrial facilities requiring IEC 61131-3 compliant control with high-speed deterministic I/O scanning.

The Evolution of PACSystems RX3i Architecture

The PACSystems RX3i platform was introduced by GE Fanuc Automation in the early 2000s as a successor to the Series 90-30 and Series 90-70 PLC families. The RX3i architecture introduced a universal backplane supporting both PCI-based high-speed modules and legacy serial-bus modules, enabling backward compatibility with Series 90-30 I/O hardware. This dual-bus backplane design allowed facilities to migrate from legacy GE PLC infrastructure without full system replacement, a critical factor for long-lifecycle industries such as nuclear and refining.

The IC695 module family (RX3i form factor) replaced the IC693 (Series 90-30) and IC697 (Series 90-70) module families. Key architectural milestones include the introduction of the IC695CPE302 and IC695CPE305 CPU modules with embedded Ethernet, the IC695PBM300 PROFIBUS Master for fieldbus integration, and the IC695ETM001 Ethernet module for legacy CPU variants. The IC695PMM335 specifically addresses coordinated motion control requirements, interfacing with servo drives via the SERCOS or analog command interface depending on configuration.

As of 2024, the PACSystems RX3i platform is in a mature/extended lifecycle phase. GE Vernova (formerly GE Digital / Emerson) continues to support the platform but has introduced the PACSystems RSTi-EP and CPE400/CPL410 as the strategic forward path. Facilities operating IC695-based systems should plan for long-term maintenance sourcing strategies.

PACSystems RX3i Full Catalog & Functionalities (SKU List)

CPU Modules

• IC695CPE302: RX3i CPU, 1 GHz, 10 MB user memory, dual Ethernet ports
• IC695CPE305: RX3i CPU, 1.4 GHz, 20 MB user memory, embedded Ethernet, USB
• IC695CPE310: RX3i CPU, 1 GHz, 10 MB memory, single Ethernet, standard performance
• IC695CPE330: RX3i CPU, 1.4 GHz, 64 MB user memory, dual Ethernet, high-capacity
• IC695CRU320: RX3i CPU Redundancy Unit, hot-standby redundancy controller

Motion Control Modules

• IC695PMM335: Motion Mate Module, 4-axis coordinated motion, SERCOS/analog interface
• IC695PMM345: Motion Mate Module, 8-axis coordinated motion, extended axis count

Analog I/O Modules

• IC695ALG600: 8-channel analog input, voltage/current, 16-bit resolution
• IC695ALG608: 8-channel analog input, high-speed, simultaneous sampling
• IC695ALG616: 16-channel analog input, universal signal type, 16-bit
• IC695ALG704: 4-channel analog output, voltage/current, 16-bit resolution
• IC695ALG728: 8-channel analog output, high-density, 16-bit

Digital I/O Modules

• IC695MDL654: 16-point 24 VDC discrete input module, standard density
• IC695MDL664: 32-point 24 VDC discrete input module, high density
• IC695MDL754: 16-point 24 VDC discrete output module, 0.5 A per point
• IC695MDL764: 32-point 24 VDC discrete output module, high density

Communication & Network Modules

• IC695ETM001: Ethernet interface module for legacy RX3i CPUs, 10/100 Mbps
• IC695PBM300: PROFIBUS DP Master module, up to 125 slave devices
• IC695PBS301: PROFIBUS DP Slave module, RX3i to PROFIBUS network integration

Power Supply Modules

• IC695PSA040: 40 W AC power supply, 120/240 VAC input, RX3i backplane
• IC695PSD040: 40 W DC power supply, 24 VDC input, RX3i backplane

Sourcing Hard-to-Find & Obsolete PACSystems RX3i Parts

As the RX3i platform transitions into extended lifecycle status, procurement of specific IC695 modules — particularly motion control variants such as the IC695PMM335 and IC695PMM345 — becomes increasingly constrained through standard distribution channels. DriveKNMS maintains a dedicated inventory of new-surplus, refurbished, and tested-serviceable RX3i modules to support facilities that cannot execute full control system migrations within operational budget cycles.

Quality Control for the PACSystems RX3i Range

RX3i modules present specific test challenges due to the dual-bus backplane architecture (PCI high-speed bus + serial legacy bus) and the motion control modules' dependency on external drive communication protocols. DriveKNMS applies the following test procedures to IC695 series modules:

• Backplane Communication Verification: Each module is seated in a live RX3i rack and scanned by a reference CPU (IC695CPE305) to confirm PCI bus enumeration and module identity response.
• Motion Module Functional Test (IC695PMM335 / PMM345): Axis configuration is loaded via Proficy Machine Edition. SERCOS ring initialization and axis enable sequences are executed to verify motion command processing and feedback loop integrity.
• Analog I/O Calibration Check: ALG-series modules are tested across the full input/output range using calibrated signal sources. Offset and gain errors are measured against GE factory specifications.
• Digital I/O Point-Level Test: All discrete I/O points are individually exercised. Leakage current and response time are verified for output modules.
• Thermal Burn-In: Modules are operated at elevated ambient temperature for a minimum of 4 hours to screen for early-life component failures prior to shipment.