GE IC695PMM335 Replacement/Upgrade for PACSystems RX3i

Product Overview

GE IC695PMM335 Replacement/Upgrade Solution for PACSystems RX3i: Seamless Transition from Legacy SERCOS Motion Systems

The GE IC695PMM335 is a 4-Axis SERCOS Motion Module designed for the GE PACSystems RX3i platform. As legacy motion control architectures age and original equipment manufacturers discontinue support for older SERCOS-based drive systems, facilities running Series 90-30, VersaMax, or early-generation PACSystems RX3i racks face increasing pressure to modernize without triggering full-line shutdowns. The IC695PMM335 serves as the cornerstone of a controlled, low-risk migration path — preserving existing wiring infrastructure, drive communication topology, and PLC program logic while delivering the performance and reliability demanded by modern industrial environments.

Whether you are replacing a failed IC695PMM335 on an active production line, upgrading from a discontinued IC693APU305 or IC693MCM001 motion coprocessor, or consolidating a multi-axis servo system previously managed by standalone motion controllers, this module integrates directly into the RX3i Universal Backplane (IC695CHS012 or IC695CHS016) without requiring rack redesign or power budget recalculation. The module communicates over the SERCOS II fiber-optic ring, maintaining full compatibility with existing servo drives such as the GE Fanuc Alpha series and third-party SERCOS-compliant drives already installed in your control cabinet.

Compatibility Comparison Table

Seamless Upgrade Solutions

A successful migration to the IC695PMM335 rarely involves a single module swap. In practice, upgrading a SERCOS-based motion system within a PACSystems RX3i architecture requires coordinated attention to the surrounding hardware ecosystem. The IC695CPU320 or IC695CPU315 CPU module must be confirmed at a firmware revision that supports the PMM335 motion task configuration within Proficy Machine Edition. If the existing rack is an older IC694 or IC693 chassis, a full backplane migration to the IC695CHS012 (12-slot) or IC695CHS016 (16-slot) universal backplane is required before the IC695PMM335 can be seated.

On the power side, the IC695PSA040 (120/240 VAC input) or IC695PSD040 (24 VDC input) power supply modules must be verified for adequate wattage headroom when adding a motion module to an existing rack configuration. For systems that previously relied on the IC693PWR321, a direct power supply replacement is part of the migration scope.

The SERCOS fiber ring connecting the IC695PMM335 to servo drives requires careful cable routing and ring closure verification. Drives such as the GE Fanuc Beta series amplifiers or Bosch Rexroth IndraDrive units with SERCOS II interface cards connect via standard ST-type fiber connectors. If the existing cabinet uses analog ±10V command wiring to legacy drives, those drives must either be replaced with SERCOS-compatible units or bridged using a SERCOS-to-analog gateway module.

For I/O integration alongside the motion axes, the IC695ALG600 analog input module and IC695MDL765 discrete output module are commonly deployed in the same RX3i rack to handle feedback signals, limit switches, and home sensor inputs that feed the motion program. In applications where the motion system interfaces with a supervisory SCADA or DCS layer, the IC695ETM001 Ethernet module provides the EtherNet/IP or SRTP communication path to the plant network without consuming additional backplane slots from the motion task.

For operator interface, the QuickPanel+ series HMI (GP-PRO EX or Proficy HMI/SCADA iFIX) connects to the RX3i CPU via Ethernet, providing real-time axis position feedback, fault diagnostics, and jog control screens that replace older OI panels previously wired to the legacy motion coprocessor. Programming cables such as the IC690USB901 USB-to-serial adapter or a direct Ethernet connection to the CPU’s embedded Ethernet port are used during commissioning to download the updated motion program from Proficy Machine Edition.

Retrofit Guidance FAQ

Q: Can I reuse my existing SERCOS fiber cables when replacing a failed IC695PMM335?
A: Yes. If the existing fiber ring is intact and the ST-type connectors are undamaged, the fiber cables connecting the IC695PMM335 to your servo drives can be reused directly. Inspect connectors for contamination before reconnecting.

Q: Do I need to rewrite my motion program when migrating from an IC693APU305 or IC693MCM001?
A: A full program rewrite is typically required when migrating from Series 90-30 motion coprocessors to the IC695PMM335, as the programming model in Proficy Machine Edition differs significantly from Logicmaster 90 or VersaPro. However, the axis parameter structure and cam profile logic can often be adapted with moderate engineering effort.

Q: Is the IC695PMM335 compatible with my existing IC694 backplane?
A: No. The IC695PMM335 requires an IC695 Universal Backplane (IC695CHS012 or IC695CHS016). IC694 and IC693 backplanes are not electrically or mechanically compatible with IC695 series modules.

Q: What power supply is required for the IC695PMM335?
A: The IC695PMM335 draws power from the IC695 backplane. The IC695PSA040 (AC input) or IC695PSD040 (DC input) power supply modules are the standard choices. Verify total rack power budget before installation, particularly if multiple high-draw modules (CPU, Ethernet, motion) are co-located.

Q: Can the IC695PMM335 control third-party SERCOS drives?
A: Yes, provided the drives support SERCOS II protocol and are configured with compatible IDN (Identification Number) parameter sets. Bosch Rexroth IndraDrive, Siemens SIMODRIVE with SERCOS interface, and other SERCOS II-certified drives have been successfully integrated with the IC695PMM335 in field installations.

Q: How do I verify the SERCOS ring is closed correctly after installation?
A: Within Proficy Machine Edition, the SERCOS ring status is visible in the hardware configuration diagnostic view. A closed ring with all drives recognized will show each axis node address populated. Ring faults are indicated by a broken ring icon and can be traced by temporarily bypassing individual drives to isolate the fault segment.

Warranty Assurance

Every IC695PMM335 unit shipped by TOPNLMS is covered by a 12-month warranty from the date of shipment. Prior to dispatch, each module undergoes functional verification including backplane communication check, SERCOS port integrity test, and firmware version confirmation. Units are packed in anti-static ESD shielding with foam cushioning to prevent transit damage.

In the event of a confirmed defect within the warranty period, TOPNLMS provides a replacement unit or full refund based on customer preference. Our technical support team responds to warranty claims and commissioning inquiries within 1 business day. Replacement units for warranty cases are prioritized for same-week dispatch from our Xiamen warehouse.

For urgent production-line replacements, expedited shipping options (DHL Express, FedEx International Priority) are available at checkout. Standard lead time for in-stock units is 3–5 business days to most international destinations. All units are shipped with a packing list, test report, and certificate of conformity upon request.

TOPNLMS maintains a dedicated inventory of PACSystems RX3i motion and I/O modules to support both emergency replacement and planned maintenance procurement programs. Volume pricing and blanket purchase order arrangements are available for MRO and system integrator customers.

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