GE IC695PBM300-CC Replacement/Upgrade for PACSystems RX3i

Product Overview

GE IC695PBM300-CC Replacement/Upgrade for PACSystems RX3i: Smooth Migration from Legacy PROFIBUS Systems

The GE IC695PBM300-CC is a PROFIBUS DP Master Module engineered for the GE PACSystems RX3i control platform. As legacy GE Series 90-30 installations and early-generation RX3i racks approach end-of-life, plant engineers and system integrators face increasing pressure to execute reliable, low-risk upgrade paths that preserve existing field wiring, PROFIBUS network topology, and validated PLC program logic. The IC695PBM300-CC delivers exactly that — a fully compatible replacement and functional upgrade that minimizes retrofit engineering effort, reduces unplanned downtime, and extends the operational life of your control system infrastructure.

Whether you are migrating from a GE IC693PBM200 PROFIBUS master on a Series 90-30 rack, replacing a failed IC695PBM300 (non-CC variant) on an existing RX3i backplane, or executing a planned system modernization across multiple production lines, the IC695PBM300-CC provides a single, stocked, tested solution that covers all three scenarios. The module slots into any Universal Backplane slot on the IC695CHS007 or IC695CHS012 chassis without mechanical modification, communicates over the standard 9-pin D-sub PROFIBUS connector, and maintains full compatibility with existing shielded twisted-pair cable runs, termination resistors, and GSD-based slave configurations.

For procurement teams managing spare parts inventory across multiple plant sites, the IC695PBM300-CC is the recommended consolidation SKU — a single part number that replaces both the IC695PBM300 and serves as the functional upgrade target for IC693PBM200 installations. Stocking one tested unit per critical line eliminates the logistics variable and reduces mean time to repair (MTTR) to under one hour for a trained technician.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful migration to the IC695PBM300-CC rarely involves the PROFIBUS master module in isolation. In practice, the upgrade is part of a broader control system modernization that touches multiple components across the RX3i rack and the PROFIBUS field network. Understanding the interdependencies between these components is essential for planning a cutover window that minimizes production impact.

On the controller side, most modernization projects pair the IC695PBM300-CC with a current-generation CPU such as the IC695CPE305 or IC695CPE330. Both CPUs support the expanded I/O data table and communications capacity that the CC variant’s DPV1 Class 2 capability unlocks — enabling acyclic parameter access to intelligent field devices such as variable-frequency drives and smart transmitters without interrupting the cyclic I/O exchange. If the existing installation is a legacy Series 90-30 chassis, a full backplane swap to the IC695CHS012 Universal Backplane is required before the IC695PBM300-CC can be installed. This is a planned, one-time mechanical change that simultaneously accommodates future expansion slots and eliminates the slot-count limitation of the older rack form factor.

Power integrity is a critical checkpoint during any rack-level retrofit. The IC695PSA040 40W AC power supply or the IC695PSD040 DC variant should be verified against the updated load budget once the IC695PBM300-CC is added to the rack — particularly if the rack also hosts high-density analog I/O modules such as the IC695ALG600 or IC695ALG616. Undersized power supplies are a documented root cause of intermittent PROFIBUS communication faults following module replacement, and a load calculation review before the cutover window is a low-cost step that prevents post-commissioning troubleshooting delays.

On the PROFIBUS field side, existing slave devices — including variable-frequency drives, remote I/O stations, and intelligent field instruments — typically require no reconfiguration provided the GSD files are re-imported into Proficy Machine Edition and the DP address assignments are preserved from the original project. However, if the migration also involves replacing aging discrete output modules or analog input modules in remote I/O drops, those replacements should be scheduled concurrently to avoid a second maintenance window. Modules such as the IC693MDL655 discrete output module and the IC693ALG222 analog input module are common candidates for concurrent replacement during a Series 90-30 to RX3i migration.

For sites executing a phased migration — where the PROFIBUS field network is being retained while the DCS or SCADA layer is upgraded to PROFINET or EtherNet/IP — a protocol gateway can be inserted transparently between the IC695PBM300-CC and the higher-level network without modifying the PROFIBUS master configuration. This approach is widely used in brownfield chemical, oil and gas, and water treatment plants where field bus infrastructure replacement is deferred to a later project phase.

Programming and commissioning connectivity is the final practical consideration. The IC690USB901 USB-to-serial programming cable, used with Proficy Machine Edition, is the standard tool for online program download and hardware configuration upload to the RX3i CPU during the cutover window. Experienced retrofit teams consistently recommend having a verified spare cable on-site before the maintenance window begins — a low-cost measure that eliminates a common source of commissioning delay. For sites with Ethernet-capable CPUs such as the IC695CPE330, direct Ethernet programming is also supported and eliminates the serial cable dependency entirely.

Retrofit Guidance FAQ

Q: Can I reuse my existing PROFIBUS field wiring when replacing IC693PBM200 with IC695PBM300-CC?
A: Yes. The IC695PBM300-CC uses the same 9-pin D-sub PROFIBUS connector and the same RS-485 electrical standard as the IC693PBM200. Your existing shielded twisted-pair cable, termination resistors, and repeaters are fully reusable. No field rewiring is required for the PROFIBUS segment.

Q: Do I need to rewrite my PLC program after the module swap?
A: For a like-for-like replacement of IC695PBM300 with IC695PBM300-CC on the same RX3i platform, the existing Proficy Machine Edition project can be reused with minor hardware configuration updates — primarily re-selecting the CC module type in the hardware catalog. When migrating from Series 90-30 (IC693PBM200), a program port to the RX3i instruction set is required, but the PROFIBUS I/O mapping and GSD-based slave configuration can be preserved and re-imported.

Q: Is the IC695PBM300-CC compatible with all RX3i CPU variants?
A: The module is compatible with IC695CPE302, IC695CPE305, IC695CPE310, and IC695CPE330 CPUs. It is not compatible with Series 90-30 CPUs without a full platform migration to the RX3i backplane and CPU. Compatibility with the IC695CPE400 (RX3i CPE400 high-availability CPU) should be confirmed against the current GE/Emerson compatibility matrix for your firmware revision.

Q: What is the physical installation space requirement?
A: The IC695PBM300-CC occupies one single-width slot in any IC695CHS007 or IC695CHS012 Universal Backplane. No additional DIN rail space, external mounting bracket, or control cabinet modification is required. The module depth is standard RX3i form factor and is compatible with standard RX3i cabinet door clearances.

Q: How do I handle PROFIBUS address conflicts during the cutover?
A: PROFIBUS DP slave addresses are stored in the GSD configuration within Proficy Machine Edition, not in the master module hardware. Provided the same project file is downloaded to the new module, all slave address assignments are preserved automatically. A live network scan after power-up will confirm all slaves are online before releasing the system to production. Address conflicts are only a risk if the GSD configuration has been modified between the backup and the cutover download.

Q: Can the IC695PBM300-CC operate as both a Class 1 and Class 2 master simultaneously?
A: Yes. The CC variant adds Class 2 master capability, which allows acyclic parameter read/write access to intelligent PROFIBUS slaves — such as drives and transmitters supporting DPV1 — without interrupting the cyclic I/O exchange. This is a significant functional upgrade over the non-CC predecessor and enables advanced diagnostics and parameterization workflows that are not possible with the IC695PBM300.

Q: What communication protocols does the IC695PBM300-CC support beyond PROFIBUS DP?
A: The IC695PBM300-CC is a dedicated PROFIBUS DP master module. It does not natively support PROFINET, EtherNet/IP, or Modbus TCP. For multi-protocol environments, the RX3i platform supports concurrent installation of separate Ethernet and serial communication modules — such as the IC695ETM001 Ethernet module — in adjacent backplane slots alongside the IC695PBM300-CC.

Warranty Assurance

Every IC695PBM300-CC unit shipped by TOPNLMS is covered by a 12-month replacement warranty from the date of delivery. Prior to dispatch, each module undergoes a functional power-on test and visual inspection to verify connector integrity, LED status behavior, and firmware revision marking. Units that do not pass inspection are not shipped.

If a module exhibits a confirmed defect within the warranty period, TOPNLMS will arrange a replacement unit at no additional cost. Our standard response time for warranty claims is within 2 business days of fault confirmation, with expedited handling available for time-critical plant environments. We maintain buffer stock of high-demand RX3i modules specifically to support rapid warranty exchanges without extended lead times.

For plants with zero-tolerance downtime requirements, we recommend requesting a tested spare unit at the time of initial purchase. Holding a verified spare on-site eliminates the logistics variable entirely and reduces MTTR to under one hour for a trained technician — a procurement practice that is standard in petrochemical, pharmaceutical, and continuous-process manufacturing environments.

All orders are shipped with a packing list, functional test record, and module serial number documentation. Export compliance documentation — including HS code classification and country of origin certification — is available upon request for international procurement teams and customs clearance purposes. Standard lead time for in-stock units is 3–7 business days to major international destinations.