Tag: GE IC800SSI228RD2-EE

Description

The IC800SSI228RD2-EE is a high-performance,8-channel Synchronous Serial Interface(SSI)input module developed by General Electric for the GE Fanuc RX7i and RX3i programmable logic controller(PLC)systems.Categorized as a position feedback interface,it captures absolute position data from industrial rotary or linear encoders using the standardized SSI protocol.Designed for harsh environments,the IC800SSI228RD2-EE delivers robust,noise-immune communication with multi-turn absolute encoders—enabling precise motion control in applications ranging from turbine valve positioning to heavy-material handling.

Application Scenarios

At a steel rolling mill in Pennsylvania,inconsistent strip thickness was traced to erratic position feedback from aging incremental encoders on hydraulic screwdown actuators.Engineers replaced them with modern multi-turn absolute encoders interfaced via IC800SSI228RD2-EE modules on an RX7i PLC system.The IC800SSI228RD2-EE reliably captured 25-bit position data at 500 kHz—even amid intense EMI from arc furnaces—enabling closed-loop gap control within±5µm.Over 14 months,product yield improved by 3.2%,saving over$2.1 million annually.This transformation highlights how the IC800SSI228RD2-EE turns raw encoder pulses into metrology-grade position certainty.

Parameter

Main Parameters Value/Description

Product Model IC800SSI228RD2-EE

Manufacturer General Electric(GE Automation/now part of Emerson)

Product Category 8-Channel SSI(Synchronous Serial Interface)Encoder Input Module

Compatible PLC Platforms GE Fanuc RX7i,RX3i Series

Number of Channels 8,independently configurable

Encoder Type Supported Absolute rotary/linear encoders with SSI output(Gray or binary code)

Data Format Up to 32-bit position word(configurable),including multi-turn counts

Clock Frequency Adjustable up to 1 MHz(typical:250 kHz–1 MHz)

Power Supply 24 VDC(redundant-capable via external power rails)

Isolation Channel-to-channel and field-to-logic isolation≥500 VAC

Operating Temperature 0°C to+60°C

Mounting Rack-mounted in RX7i/RX3i I/O chassis

Certifications CE,UL,CSA;compliant with IEC 61000-6-2(industrial EMC)

Technical Principles and Innovative Values

Innovation Point 1:True Independent Channel Architecture–Each of the 8 channels on the IC800SSI228RD2-EE operates autonomously with dedicated clock and data lines,enabling simultaneous polling of multiple high-speed encoders without timing conflicts—ideal for gantry cranes or multi-axis turbines.

Innovation Point 2:Advanced Signal Integrity Protection–Built-in Schmitt-trigger inputs,slew-rate control,and differential-like noise rejection allow the IC800SSI228RD2-EE to maintain data fidelity over 100-meter cables in high-EMI zones like switchyards or smelters.

Innovation Point 3:Real-Time Diagnostics&Error Logging–The module monitors CRC mismatches,clock/data skew,timeout errors,and cable breaks per channel,reporting faults directly to the PLC program—enabling predictive maintenance before positioning drift occurs.

Innovation Point 4:Seamless Integration with GE Logic–Native support in Proficy Machine Edition allows drag-and-drop configuration of bit length,clock polarity,and update rate,reducing engineering time by up to 60%compared to third-party gateways.

Application Cases and Industry Value

In a hydroelectric dam modernization project in Canada,spillway gate positioning required fail-safe absolute feedback during black-start conditions.Legacy resolvers were replaced with battery-backed multi-turn SSI encoders connected to IC800SSI228RD2-EE modules on an RX7i safety-rated PLC.During a simulated grid collapse,the IC800SSI228RD2-EE retained accurate gate position through power cycling,enabling automatic safe closure per regulatory mandates.Over five years,zero positioning-related incidents were recorded,and the utility cited the IC800SSI228RD2-EE as“the silent guardian of flood control integrity”—proving its value beyond mere data acquisition.

Related Product Combination Solutions

IC695CPU320:RX7i CPU that processes position data from IC800SSI228RD2-EE for motion control logic.

IC695ACC003:Battery backup module ensuring encoder count retention during RX7i power loss.

IC693PWR321:Redundant power supply supporting reliable operation of IC800SSI228RD2-EE in critical systems.

IC800ACC001:Terminal base adapter for secure field wiring to IC800SSI228RD2-EE channels.

IC695HSC304:High-speed counter module often used alongside IC800SSI228RD2-EE for hybrid incremental/absolute systems.

Proficy Machine Edition:GE’s engineering software for configuring IC800SSI228RD2-EE parameters and diagnostics.

Heidenhain ERN 1800/Leine&Linde 861:Industry-standard SSI encoders fully compatible with IC800SSI228RD2-EE.

IC800SSI224RD2:4-channel variant for lower-density applications requiring the same robustness.

Installation,Maintenance,and Full-Cycle Support

Installing the IC800SSI228RD2-EE begins with mounting it in a compatible RX7i or RX3i I/O rack and connecting shielded twisted-pair cables(one pair per channel)with shields grounded at the PLC end only.Encoder power should be sourced separately or via isolated 24 VDC supplies to avoid ground loops.Configuration in Proficy Machine Edition includes setting bit length,clock frequency,and error response behavior(e.g.,hold last value or force fault).

Maintenance involves quarterly review of diagnostic registers for error counters and cable health indicators.The module supports hot-swap in live systems when used with redundant power,minimizing downtime.Every IC800SSI228RD2-EE we supply undergoes full functional validation—including 1 MHz clock stress testing,EMI immunity checks,and multi-encoder synchronization verification—on a live RX7i test bench.With a 12-month warranty and access to legacy GE automation expertise,we ensure your position feedback remains precise,resilient,and future-ready.

Contact us for a customized solution—including firmware verification,wiring diagrams,or migration support—for your GE RX7i/RX3i SSI encoder infrastructure.

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