GE PACSystems RX3i PROFIBUS Modules: IC695PBM300

Name: GE PACSystems RX3i PROFIBUS Modules: IC695PBM300
Brand: General Electric

Model: IC695PBM300

Brand General Electric

Series PACSystems RX3i

Model IC695PBM300

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Product Details And Specifications

GE PACSystems RX3i Series Technical Notes

The GE PACSystems RX3i platform is one of the most widely deployed programmable automation controller (PAC) architectures in global heavy industry. Installed across petrochemical refineries, nuclear power generation facilities, offshore platforms, and large-scale chemical processing plants, the RX3i backplane-based architecture provides deterministic control with high-availability redundancy options. The IC695PBM300 is a PROFIBUS DP Master module within this ecosystem, enabling the RX3i CPU to act as a Class 1 Master on a PROFIBUS DP network — supporting up to 125 slave devices at data rates up to 12 Mbps. Its deployment is common in legacy DCS migration projects and brownfield automation upgrades where PROFIBUS DP remains the fieldbus standard.

The Evolution of PACSystems RX3i Architecture

GE Intelligent Platforms (now Emerson Automation Solutions following the 2018 acquisition) introduced the PACSystems RX3i platform in the early 2000s as a successor to the Series 90-30 and Series 90-70 PLC families. The RX3i retained backward compatibility with 90-30 I/O modules via the IC694 adapter carrier, while introducing a high-speed PCI backplane (IC695 prefix) capable of 200 MB/s throughput — a significant architectural leap over the VME-based 90-70 bus.

Early RX3i CPUs (IC695CPU310, IC695CPU315) used CompactFlash for program storage. Later generations (IC695CPU320, IC695CPE302, IC695CPE305, IC695CPE310, IC695CPE330, IC695CPE400) introduced USB programming ports, expanded memory, and Ethernet-embedded controllers. The IC695CPE400 represents the current flagship, supporting IEC 61131-3 structured programming and EtherNet/IP native integration. Communication modules evolved in parallel: PROFIBUS (IC695PBM300), PROFINET (IC695PNC001), DeviceNet (IC695NDR001), and EtherNet/IP scanner (IC695ETM001) modules were introduced to address diverse fieldbus environments. The RX3i platform is now in its mature/late-lifecycle phase; GE/Emerson continues to support it but new installations increasingly favor the CPE400 with native Ethernet I/O.

PACSystems RX3i Full Catalog & Functionalities — IC695PBM300 Series SKU List

CPU & Controller Modules

IC695CPU310: RX3i CPU, 10 MB user memory, CompactFlash storage, RS-232 serial port.
IC695CPU315: RX3i CPU, 15 MB user memory, dual RS-232 ports, legacy baseline controller.
IC695CPU320: RX3i CPU, 20 MB user memory, USB programming port, Ethernet option.
IC695CPE302: Embedded dual-port Ethernet CPU, 10 MB memory, EtherNet/IP & SRTP support.
IC695CPE305: Embedded dual-port Ethernet CPU, 5 MB memory, compact footprint controller.
IC695CPE310: Embedded dual-port Ethernet CPU, 10 MB memory, standard rack controller.
IC695CPE330: High-performance embedded Ethernet CPU, 30 MB memory, motion-ready.
IC695CPE400: Current flagship CPU, quad-core, 64 MB memory, native EtherNet/IP, IEC 61131-3.

Communication & Fieldbus Modules

IC695PBM300: PROFIBUS DP Master module, Class 1 Master, up to 125 slaves, 12 Mbps max data rate.
IC695PNC001: PROFINET IO Controller module, supports up to 128 IO devices, 100 Mbps.
IC695ETM001: EtherNet/IP & SRTP scanner module, dual RJ-45 ports, 100 Mbps.
IC695NDR001: DeviceNet Remote I/O Scanner, supports up to 64 nodes on DeviceNet network.
IC695CMM002: Serial Communications module, dual RS-232/RS-485 configurable ports.
IC695CMM004: Serial Communications module, quad RS-232/RS-485 configurable ports.

Power Supply Modules

IC695PSA040: 40W AC/DC power supply, 120/240 VAC input, for RX3i main rack.
IC695PSA140: 40W AC/DC power supply with enhanced diagnostics, redundancy-capable.
IC695PSD040: 40W DC power supply, 24 VDC input, for RX3i main rack.
IC695PSD140: 40W DC power supply with redundancy support, 24 VDC input.

Discrete I/O Modules (IC694 Compatible via Adapter)

IC694MDL340: 24 VDC discrete input module, 32-point, sink/source configurable.
IC694MDL754: 24 VDC discrete output module, 32-point, 0.5A per point.
IC694ALG220: Analog input module, 4-channel, 4–20 mA / 0–10 VDC configurable.
IC694ALG390: Analog output module, 4-channel, 4–20 mA / 0–10 VDC configurable.

Quality Control for the PACSystems RX3i Range

RX3i modules present specific test challenges due to their PCI backplane architecture and fieldbus-specific firmware. DriveKNMS applies the following verification procedures to all IC695 series units:

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