GE IC698PSA100D Retrofit-Compatible Power Supply for Legacy Systems

GE IC698PSA100D Retrofit-Compatible Power Supply for Legacy Systems

The GE IC698PSA100D is a high-reliability AC power supply module engineered for the GE Fanuc Series 90-70 and PACSystems RX7i control platform. Rated at 100W output with a wide-range AC input, this module delivers stable, regulated DC power to the RX7i backplane, sustaining continuous operation across demanding industrial environments including automotive assembly, petrochemical processing, power generation, and heavy manufacturing. As legacy GE Fanuc 90-70 systems approach end-of-life and OEM support windows close, the IC698PSA100D has become a critical retrofit and replacement component for engineers tasked with extending the operational life of existing control infrastructure without committing to a full platform migration.

When planning a retrofit or spare-part replacement using the IC698PSA100D, engineers must verify several key compatibility parameters before installation. The module occupies the dedicated power supply slot on the IC698CHS017 or IC698CHS113 Series 90-70 rack — confirming rack slot assignment and backplane connector alignment is the first step. Input wiring must match the module’s AC terminal block layout, and existing conduit or cable trays should be checked for conductor gauge compatibility with the module’s terminal ratings. Output capacity must be assessed against the total current draw of all installed I/O modules, communication modules, and the CPU — a fully populated rack with modules such as the IC698CPE010 CPU, IC698MDL140 discrete input modules, and IC698MDL940 discrete output modules can approach the module’s rated output ceiling, making a load audit essential before commissioning.

For systems that also include analog I/O — such as the IC698ALG228 analog input module or IC698ALG728 analog output module — power budget calculations must account for the higher per-module current consumption of analog signal processing circuits. Communication modules mounted in the same rack, including the IC698ETM001 Ethernet interface module or legacy IC698CMX016 serial communication module, add further load and must be included in the total power audit. NINERMAS provides pre-shipment load verification support to help customers confirm that the IC698PSA100D is correctly sized for their specific rack configuration before the module ships.

During the physical retrofit, downtime control is a primary concern. The IC698PSA100D is designed for tool-assisted removal and insertion, with a front-panel locking mechanism that secures the module to the rack without requiring backplane disassembly. Engineers should back up the CPU program logic using the IC690ACC901 programming cable or via the Proficy Machine Edition software connection before powering down, ensuring that the control program, I/O addressing table, and communication configuration are preserved. Once the replacement module is seated and secured, the system can be powered up and the CPU will resume normal scan cycle operation without requiring program reload in most configurations — a significant advantage for minimizing production interruption.

In applications where the Series 90-70 rack is integrated into a broader control architecture — for example, as a remote I/O node communicating with a PACSystems RX3i controller via IC695ETM001 Ethernet or through a legacy Genius Bus interface — the power supply replacement does not affect the communication link or remote I/O addressing, provided the CPU and communication modules remain powered and the rack is brought back online within the network timeout window. This makes the IC698PSA100D replacement one of the lower-risk interventions in a legacy system retrofit plan, suitable for execution during a scheduled maintenance window rather than a full plant shutdown.

NINERMAS maintains in-stock inventory of the IC698PSA100D to support urgent spare-part requirements and planned retrofit projects alike. Each unit undergoes functional power-on testing and output voltage verification before shipment. All IC698PSA100D modules supplied by NINERMAS are covered by a 12-month warranty against manufacturing defects and functional failure, with technical support available throughout the warranty period to assist with installation, commissioning, and compatibility verification.

Upgrade Compatibility Table

Retrofit Planning for Existing Automation Systems

A successful IC698PSA100D retrofit begins with a thorough audit of the existing rack population. In a typical Series 90-70 installation, the rack may house the IC698CPE010 or IC698CPE020 CPU module alongside a mix of discrete and analog I/O. Discrete modules such as the IC698MDL140 (16-point 24VDC input) and IC698MDL940 (16-point relay output) are common in machine control and conveyor applications, while analog modules including the IC698ALG228 (8-channel analog input) handle process variable feedback from field transmitters. Each of these modules draws current from the backplane supply rails, and the IC698PSA100D’s 100W budget must comfortably cover the aggregate load with margin to spare.

Communication infrastructure also requires attention. If the rack includes an IC698ETM001 Ethernet TCP/IP module for SCADA connectivity or an IC698CMX016 serial module for legacy Modbus RTU links, these must remain powered and online during the transition. Engineers should document the IP address configuration, station number assignments, and baud rate settings of all communication modules before beginning the power supply swap, as these parameters are stored in the CPU configuration and will be restored automatically on power-up — but having a written record prevents delays if unexpected issues arise during commissioning.

For sites where the Series 90-70 rack interfaces with a PACSystems RX3i controller via an IC695ETM001 EtherNet/IP module, the network timeout settings should be reviewed and extended if necessary to prevent the RX3i from declaring the remote rack faulted during the brief power interruption. Signal isolators and surge protection devices installed on field wiring terminals should also be inspected during the retrofit window, as the power supply replacement provides a natural opportunity to address any aging protection components before they cause unplanned downtime.

Downtime Control During System Migration

Minimizing production interruption during a power supply replacement on a live Series 90-70 system requires careful pre-work. Before initiating the shutdown, the CPU program should be uploaded and saved using Proficy Machine Edition via the IC690ACC901 serial programming cable or Ethernet connection, creating a verified backup of the ladder logic, function block diagrams, and I/O configuration tables. HMI screens connected to the system — whether via OPC, Modbus TCP, or serial link — should be placed in manual override or maintenance mode to prevent operator alarms during the power interruption.

The physical swap of the IC698PSA100D is straightforward: loosen the locking screw, pull the module forward from the rack, seat the replacement unit, and secure the locking tab. Total hands-on time for an experienced technician is typically under ten minutes. After power restoration, the CPU will perform its standard self-diagnostic sequence and resume the scan cycle. I/O modules will re-initialize and communication modules will re-establish their network connections within the normal startup window. A brief functional verification — confirming that all I/O points are reading correctly, analog channels are within expected ranges, and communication links are active — completes the commissioning process. NINERMAS technical support is available by phone and email to assist with any unexpected findings during startup.

Retrofit Support FAQ

Q1: Is the IC698PSA100D a direct drop-in replacement for the IC698PSA100 and IC698PSA100C?
Yes. The IC698PSA100D is the current revision of the IC698PSA100 family and is mechanically and electrically compatible with all Series 90-70 and PACSystems RX7i racks that previously used the IC698PSA100 or IC698PSA100C. No wiring changes or rack modifications are required.

Q2: What pre-shipment testing does NINERMAS perform on the IC698PSA100D?
Every IC698PSA100D unit is subjected to a power-on functional test and output voltage verification across all DC supply rails before shipment. Units that do not meet GE Fanuc output specifications are quarantined and not shipped. A test record is available upon request.

Q3: What is the warranty coverage and how is a warranty claim handled?
All IC698PSA100D modules supplied by NINERMAS carry a 12-month warranty from the date of shipment. In the event of a functional failure within the warranty period, NINERMAS will arrange replacement or repair at no additional cost. Contact sale@ninermas.com with the order reference and a description of the fault to initiate a claim.

Q4: Can NINERMAS support long-term supply commitments for the IC698PSA100D?
Yes. NINERMAS maintains ongoing inventory of the IC698PSA100D and can support scheduled procurement programs for customers managing multi-site Series 90-70 fleets or planning phased retrofit projects. Contact our team to discuss volume pricing and reserved stock arrangements.