I. Basic Information
Full Model：IC698CHS009A
Brand & Origin：GE Fanuc / Emerson, USA Original
Product Positioning
As a 9-slot standard I/O rack backplane of GE PACSystems RX7i series, it serves as the core bearing base of RX7i PLC automatic control systems and the basic hardware platform for module installation, bus communication, power distribution and signal transmission of the entire industrial control system. Specially designed for small and medium-sized modular industrial control systems, multi-I/O point configuration and continuous industrial production conditions, it undertakes core tasks such as physical bearing, mutual bus signal communication, system power shunting and hardware timing matching for CPU modules, power modules, various I/O modules and functional expansion modules. It is an essential original core supporting spare part for industrial control system expansion and upgrading, old rack replacement, on-site hardware technical renovation and system stability optimization.
Hardware Architecture
It adopts an industrial-grade integrated aluminum alloy rack structure, built with a standardized 32-bit PCI 33MHz high-speed backplane bus fully compliant with PCI 2.1 protocol standards. The overall layout features separated strong and weak current wiring, independent bus shielding and layered power loop layout, integrated with multi-channel signal transmission lines, I/O power busbars, hardware slot identification circuits and insulation isolation protection structures. The backplane bus and rack ports support 1500V AC withstand voltage isolation, which can effectively isolate common-mode interference and ground loop current. The built-in filter network of the power loop suppresses power ripple interference. It features high bus transmission rate, strong signal anti-interference, stable seismic structure, wide slot adaptability, no signal attenuation during long-term operation and accurate hardware timing synchronization. Deeply optimized for harsh industrial conditions such as on-site vibration impact, electromagnetic clutter interference, alternating temperature and humidity and long-term full-load continuous operation, it thoroughly solves common problems of old racks such as bus delay, signal crosstalk, poor slot contact and limited expansion capacity.
Mounting Specification
It supports embedded installation on standard 19-inch industrial cabinets, with regular overall dimensions and compact structure. Adopting dual fixing methods of standard rack buckle fixation and screw locking, it delivers excellent anti-loosening and seismic performance with stable installation. Equipped with precise slot positioning structure, it supports hot-swappable alignment installation of modules without manual DIP code addressing, and the system automatically identifies slot positions and module models. The rack reserves standard heat dissipation gaps, wiring space and grounding ports, adapting to the dust-proof, moisture-proof and wide-temperature round-the-clock operating environment of closed industrial control cabinets. It fully complies with GE RX7i series original factory installation specifications, heat dissipation standards and hardware configuration logic, featuring convenient disassembly and assembly, simple operation and maintenance and neat wiring, suitable for rapid on-site configuration and equipment maintenance operations.
Compatible Systems
Exclusively and perfectly compatible with all series of GE PACSystems RX7i main control CPUs, power modules, digital/analog I/O modules, communication expansion modules and functional modules. Natively adapted to GE Proficy configuration software, it supports automatic hardware scanning, online module identification, automatic configuration matching and fault location diagnosis. The backplane bus supports mainstream industrial protocols such as SRTP and Modbus TCP/IP, enabling seamless connection with upper computer monitoring systems and on-site bus networking. It supports independent single-rack configuration and multi-rack expanded networking, adapting to the construction and expansion renovation of RX7i industrial control systems in small and medium-sized automatic production lines, energy and power, water treatment, heavy industry equipment and other fields.
Product Characteristics
An original industrial-grade 9-slot dedicated bearing rack for RX7i series. It completes backplane conductivity detection, withstand voltage insulation test, full-load condition aging, high and low temperature environment verification and seismic stability test before factory delivery. It supports simultaneous installation and configuration of 9 standard modules and can be upgraded to a 10-slot structure via expansion kits. Featuring DIP-switch-free automatic slot identification and hardware matching, high isolation and low crosstalk bus with low ripple and stable signal transmission without packet loss. The integrated aluminum alloy structure is lightweight, high-strength, dust-proof, moisture-proof, vibration-resistant and aging-resistant. It supports 24/7 uninterrupted continuous operation. Old racks with deformation, abnormal signals and insulation attenuation of the same series can be replaced in situ without damage, adapting to scenarios such as industrial control system hardware upgrading, point expansion and iterative renovation of old equipment.
II. Technical Specifications
1. Backplane Bus Parameters
Bus Standard: Industrial standard 32-bit PCI bus compliant with PCI 2.1 protocol, operating at 33MHz with sufficient transmission bandwidth and high timing accuracy, meeting the requirements of high-speed synchronous data interaction of multiple modules. It features excellent bus isolation performance with 1500V AC 1-minute withstand voltage isolation between backplane ports and rack backplane, and anti-common-mode interference voltage up to ±250V DC, effectively eliminating signal crosstalk, data dislocation and transmission delay caused by on-site ground loop current and electromagnetic clutter. The backplane wiring is fully optimized for shielding with extremely low signal attenuation and high transmission consistency, ensuring no occupation conflict or data packet loss during simultaneous communication of multiple modules, and guaranteeing long-term high-speed and stable communication operation of the entire system.
2. Power Bearing Parameters
I/O Power Bus Specification: Standard 24VDC industrial power supply with maximum bearing current of 8A per rack. The non-isolated bus realizes stable current shunting, meeting the synchronous power supply demand of full-load 9-slot modules. The power loop is built with multi-stage filter circuits to suppress power ripple effectively, with full-load operating ripple peak ≤50mV. It adapts to industrial grid voltage fluctuation of ±5%, eliminating module restart and signal abnormality caused by minor voltage fluctuations. The rack power bus adopts zoned independent power supply with balanced load and stable shunting, no local voltage drop or power supply dead zone, adapting to long-term continuous operation of high-density full-load module configuration.
3. Slot & Configuration Parameters
Standard Slot Quantity: 9 universal functional slots, supporting arbitrary mixed configuration of RX7i full-series CPUs, power modules, communication modules, digital and analog modules and special functional modules, adapting to diverse industrial control point configuration requirements. It supports expansion and upgrading to a 10-slot rack via original factory expansion kits to improve system module expansion capacity. Equipped with intelligent slot induction recognition technology, it eliminates manual DIP switch setting. The system automatically identifies slot number, module model and hardware version upon power-on, and matches configuration parameters automatically, greatly reducing on-site debugging difficulty and manual configuration errors. It supports hot-swappable alignment installation of modules without damaging backplane contacts, ensuring convenient and efficient module maintenance and replacement in the later stage.
4. Structural & Physical Parameters
Body Material: Integrated high-strength industrial aluminum alloy, lightweight, high-rigidity, non-deformable, corrosion-resistant and aging-resistant, adapting to long-term harsh industrial working conditions. Standard overall dimensions: 283mm (H) × 320mm (W) × 184mm (D), suitable for 19-inch standard industrial cabinet installation. The no-load power consumption of the whole machine is ≤3W with low power consumption and low heat generation, no rack deformation or signal drift caused by redundant heat accumulation. The weight is 5.08kg with stable structure and uniform load-bearing capacity, which can stably bear the full-load configuration weight of multiple modules without loosening or offset during long-term operation.
5. Environmental Operating Parameters
Operating Temperature：-20℃～+60℃
Storage Temperature：-40℃～+85℃
Operating Humidity：5%~95% RH, non-condensing
The whole machine has passed authoritative industrial CE and FCC certifications, with excellent dust-proof, moisture-proof, vibration-resistant, electromagnetic interference-resistant and temperature change resistance performance. It withstands harsh industrial conditions such as dust accumulation, mechanical vibration, grid interference and drastic alternating temperature and humidity changes, widely applicable to continuous industrial control scenarios such as intelligent manufacturing, metallurgical heavy industry, energy and power, water treatment, rail transit and chemical automation.
III. Key Features
1. High-Speed PCI Backplane Bus for Zero-Delay Communication
Equipped with a 32-bit 33MHz high-speed PCI industrial bus fully compliant with PCI2.1 standards, it supports parallel high-speed data interaction of multiple modules with accurate communication timing, ultra-low transmission delay and no data packet loss or dislocation. Combined with the 1500V AC high-voltage isolation architecture, it effectively isolates on-site electromagnetic interference, ground loop current and voltage clutter, thoroughly solving industrial pain points such as signal crosstalk, communication flash disconnection and data distortion under dense multi-module configuration, and ensuring the real-time performance and accuracy of logic operation, signal acquisition and command output of the entire industrial control system.
2. Intelligent DIP-Free Identification for Efficient Configuration & Debugging
Built-in dedicated slot intelligent induction recognition circuit abandons the traditional manual DIP switch addressing mode. After power-on, the system automatically scans and identifies the model, hardware parameters and installation status of each slot module, and matches system configuration automatically without manual slot address setting. It greatly simplifies the on-site hardware configuration, equipment expansion and module replacement debugging process, avoids system errors, configuration abnormalities and module unrecognized faults caused by manual DIP switch errors, effectively shortens equipment debugging and technical renovation downtime, and improves operation and maintenance efficiency.
3. Stable Power Bearing & Low Interference Under Full Load
It supports stable 24VDC/8A high-current power supply with balanced shunting and no voltage drop or overload under 9-slot full-load conditions, fully meeting the synchronous operation power supply demand of RX7i full-series high-density modules. The built-in precision filter network of the backplane power loop effectively suppresses grid ripple and voltage fluctuation interference, controlling the overall operating ripple within 50mV, ensuring pure and stable power supply for each module, eliminating module reset, sampling deviation and program abnormality caused by power supply disturbance, and adapting to 24/7 uninterrupted full-load production conditions.
4. High-Strength Aluminum Alloy Structure for Vibration Resistance & Low Failure Rate
Adopting industrial-grade integrated aluminum alloy molding technology, the body features high rigidity, non-deformation, corrosion resistance and aging resistance, with excellent mechanical shock resistance and structural stability, capable of withstanding on-site equipment vibration, cabinet jitter and long-term load-bearing pressure. The standardized double locking installation structure ensures close contact and stable fitting of contacts with no loosening or poor contact during long-term operation, greatly reducing the system shutdown probability caused by rack hardware faults and improving the operation stability and service life of the entire industrial control system.
5. High Compatibility & Expandability for Convenient In-Situ Replacement
The hardware dimensions, slot definition, bus protocol and power supply logic are fully compatible with GE RX7i full-series system standards. It supports standard 9-slot configuration and expanded 10-slot configuration, flexibly adapting to system point expansion and functional upgrading requirements. Old faulty racks with deformation, insulation attenuation and signal abnormality of the same series can be directly replaced in situ without cabinet structure modification, system program revision or parameter reconfiguration, enabling normal operation after installation, adapting to the iterative upgrading and hardware technical renovation of old industrial control systems.
IV. Working Principle
GE IC698CHS009A is a dedicated 9-slot industrial control rack for PACSystems RX7i series. As the hardware bearing and signal transmission base of the complete PLC system, it builds a complete industrial control hardware system with power modules, CPU modules and I/O modules after completing cabinet fixed installation, module alignment plug-in and grounding wiring.
After system power-on, the built-in rack intelligent identification circuit automatically scans the hardware status of each slot, accurately identifies module models, installation positions and hardware versions, and automatically completes slot address matching and system configuration adaptation without manual intervention. The external 24VDC power supply is purified and stabilized by the built-in filter circuit of the rack power bus, then evenly shunted to each slot module to provide pure and stable working power for all mounted modules such as CPU, communication and I/O modules. Meanwhile, a multi-module high-speed data interaction channel is built relying on the 32-bit high-speed PCI backplane bus, realizing real-time data transmission, command interaction and timing synchronization between the CPU and each I/O and communication module.
During full-process operation, the rack continuously isolates external electromagnetic interference and ground loop current through high-voltage isolation structure and shielded wiring, suppresses power ripple and signal crosstalk, and ensures accurate bus data transmission and stable power supply. It bears the hardware load of the entire system in real time and maintains stable mechanical structure and reliable electrical connection of each module. During system expansion and module replacement, the rack automatically identifies hardware changes and adaptively matches configuration parameters without additional debugging. It continuously provides stable hardware bearing, power distribution and high-speed communication transmission guarantee for the entire RX7i industrial control system, supporting long-term continuous and stable equipment operation.
V. Application Scenarios
1. Small & Medium-Sized RX7i Industrial Control System Main Rack: Serving as the core bearing base of GE RX7i PLC, it is used for building small and medium-sized automatic control systems, adapting to dense configuration scenarios of multiple I/O points and multiple communication modules, and widely supporting the matching of various standard industrial control equipment.
2. Industrial Automatic Production Line Control Systems: Adapted to the industrial control systems of intelligent manufacturing assembly lines, logistics conveying lines, packaging equipment and precision processing equipment, it provides stable bearing, power supply and communication transmission for the entire PLC hardware, ensuring continuous and stable production of production lines.
3. Energy & Heavy Industry Automatic Control Systems: Applied in power distribution, water treatment, metallurgical heavy industry, chemical automation and rail transit auxiliary control systems, adapting to harsh industrial working conditions with high interference, high vibration and round-the-clock continuous operation.
4. Old Industrial Control System Renovation & Expansion Replacement: Used for replacing old deformed, signal-attenuated and insulation-failed racks of RX7i series, adapting to system I/O point expansion, hardware performance upgrading and equipment iterative renovation. It serves as an essential original core supporting hardware for GE PACSystems industrial control systems.
