GE IC697CHS770

Description

Introduction and Overview

The GE IC697CHS770 is a 9-slot universal backplane manufactured by GE Fanuc Automation (now part of Emerson Automation Solutions) for use with the Series 90-70 programmable logic controller (PLC) systems. This backplane serves as the fundamental mounting and interconnection chassis for all Series 90-70 modules, including power supplies, CPUs, communications modules, and I/O cards. The GE IC697CHS770 provides both physical support and electrical connectivity through its integrated bus structure, enabling seamless communication between all modules installed in the rack.

As an essential infrastructure component of the Series 90-70 family, the GE IC697CHS770 embodies the rugged design and reliability for which GE automation products are known. This backplane is designed for installation in industrial control cabinets and provides the foundation for building scalable, maintainable control systems. The GE IC697CHS770 supports a wide range of module types and configurations, making it a versatile choice for applications ranging from small standalone systems to large distributed control networks.

Technical Parameters (Product Parameters)

The GE IC697CHS770 is engineered for reliable performance in demanding industrial environments. Its key specifications include:

• Product Type: 9-Slot Universal Backplane for Series 90-70 PLC

• Part Number: GE IC697CHS770 (standard 9-slot configuration)

• Number of Slots: 9 module positions

• Slot Type: Universal slots accepting any Series 90-70 module type (power supply, CPU, I/O, communications)

• Bus Structure: Parallel backplane bus with separate power distribution bars

• Power Distribution: Dedicated +5 V DC, +12 V DC, -12 V DC buses from power supply to all slots

• Mounting: Panel mount with integral mounting tabs (standard 19-inch rack compatible)

• Dimensions: Standard 19-inch rack width

• Module Retention: Individual module locking tabs for secure retention in high-vibration environments

• Connectors: High-density card-edge connectors for reliable module interconnection

• Cooling: Designed for convection cooling; requires adequate cabinet ventilation

• Operating Temperature: 0°C to +60°C (industrial standard)

• Certifications: UL, CSA, CE marked

• Compatibility: Works with all Series 90-70 modules: power supplies (IC697PWRxxx), CPUs (IC697CPUxxx), I/O modules, and communications modules

The GE IC697CHS770 provides the mechanical and electrical foundation for building Series 90-70 control systems with up to 9 modules in a single rack.

Advantages and Features

The primary advantages of the GE IC697CHS770 lie in its flexibility, robust construction, and seamless integration with the Series 90-70 ecosystem.

1. Universal Slot Design: Unlike some backplanes that restrict certain module types to specific slot positions, the GE IC697CHS770 features universal slots that accept any Series 90-70 module in any position. This flexibility simplifies system configuration and allows optimal module placement for wiring convenience and heat dissipation.

2. Rugged Industrial Construction: The GE IC697CHS770 is built with heavy-duty materials suitable for industrial environments. The backplane PCB is designed to withstand vibration, temperature cycling, and industrial contaminants. Individual module locking tabs ensure that modules remain securely seated even in high-vibration applications.

3. Scalable System Architecture: The GE IC697CHS770 supports both standalone and expanded system configurations. Multiple backplanes can be interconnected using expansion cables and modules, allowing systems to grow beyond the 9-slot limitation to accommodate larger I/O counts and more complex control requirements.

4. Standard Rack Mounting: With its 19-inch rack-compatible dimensions, the GE IC697CHS770 integrates easily into standard industrial control cabinets. The integral mounting tabs provide secure attachment to cabinet back panels or mounting rails.

5. Clean Power Distribution: The backplane incorporates dedicated power distribution buses with minimal voltage drop, ensuring that all modules receive clean, regulated power from the power supply module. Separate buses for +5 V, +12 V, and -12 V accommodate the different power requirements of various module types.

6. Easy Maintenance: The GE IC697CHS770 design allows for easy module installation and removal without special tools. Module locking tabs provide secure retention while allowing quick release when replacement is necessary, minimizing downtime during maintenance activities.

Application Fields and Use Cases

The GE IC697CHS770 is widely used in industrial applications requiring reliable PLC platforms with moderate to high I/O counts.

• Manufacturing Automation: Automotive assembly plants, food processing facilities, and general manufacturing operations use the GE IC697CHS770 to build control systems for production lines, material handling, and machine control applications.

• Water and Wastewater Treatment: Municipal and industrial water treatment facilities employ the GE IC697CHS770 in control systems for pumps, valves, filtration systems, and chemical dosing equipment, where reliability and ease of maintenance are essential.

• Power Generation: Thermal, hydro, and cogeneration plants utilize the GE IC697CHS770 for balance-of-plant control systems, auxiliary equipment control, and monitoring applications where continuous operation is required.

• Petrochemical Facilities: Refineries and chemical plants use the GE IC697CHS770 in control systems for process units, tank farms, and material handling applications, often in hazardous area locations with appropriate enclosures.

• Material Handling and Warehousing: Large distribution centers and warehouses employ the GE IC697CHS770 in conveyor control systems, sortation equipment, and automated storage and retrieval systems.

• Infrastructure Projects: Airports, tunnels, and transportation systems utilize the GE IC697CHS770 for control of ventilation, lighting, and auxiliary systems where reliability is critical.

Comparison with Competing Products

The GE IC697CHS770 competes with backplane and rack systems from other major PLC manufacturers such as Siemens (S7-400 racks), Rockwell Automation (ControlLogix chassis), and Schneider Electric (Quantum backplanes).

• Advantages of GE IC697CHS770: The universal slot design of the GE IC697CHS770 offers greater flexibility than some competing products that restrict CPU or power supply placement to specific slots. The rugged construction and proven reliability of the Series 90-70 platform have made it a trusted choice in many industries for decades. For facilities with existing Series 90-70 installations, the GE IC697CHS770 provides seamless integration with existing spare parts inventory and engineer familiarity.

• Disadvantages: The Series 90-70 platform represents mature technology compared to newer control platforms. The GE IC697CHS770 does not support some modern features such as integrated Ethernet backplanes or hot-swappable I/O in the same way that newer platforms do. The parallel backplane architecture, while reliable, has lower bandwidth compared to modern serial backplane technologies.

• Versus Modern Backplanes: Compared to contemporary PLC backplanes like the GE RX7i or Rockwell ControlLogix chassis, the GE IC697CHS770 offers proven reliability but with more limited backplane communication speed and no support for some advanced features. However, for maintaining and expanding existing Series 90-70 systems, it remains the most practical and cost-effective solution.

Selection Suggestions and Precautions

When selecting and implementing the GE IC697CHS770, consider the following recommendations:

1. Slot Count Requirements: Carefully assess your current and future I/O requirements to determine if the 9-slot GE IC697CHS770 is appropriate for your application. Consider the need for power supply (typically 1-2 slots), CPU (1 slot), communications modules, and I/O modules. If 9 slots are insufficient, consider expansion racks or larger backplane models.

2. Power Supply Selection: Ensure that the power supply module selected for your GE IC697CHS770 has sufficient capacity to power all modules installed in the rack. Calculate the total +5 V, +12 V, and -12 V current requirements for all planned modules and select a power supply with adequate ratings.

3. Physical Installation: Verify that your control cabinet has adequate space for the GE IC697CHS770 with proper clearances for ventilation, wiring, and module removal. Allow sufficient depth for module protrusion and wiring connections behind the backplane.

4. Environmental Conditions: Ensure that the installation environment meets the operating temperature specifications of the GE IC697CHS770 and provides adequate ventilation. Consider forced-air cooling if the cabinet will be densely populated or located in a high-temperature area.

5. Expansion Planning: If your application may require expansion beyond 9 slots, plan for interconnection between multiple GE IC697CHS770 backplanes using appropriate expansion modules and cables. Consider the distance between racks and the maximum expansion cable lengths.

6. Spare Parts Strategy: For critical applications, consider maintaining a spare GE IC697CHS770 backplane in inventory. While backplanes are highly reliable, having a spare available can minimize downtime in the unlikely event of failure.

Safety Precautions: When working with the GE IC697CHS770 and associated PLC equipment, observe these important safety practices:

• Always disconnect power before installing or removing modules from the backplane

• Ensure that the GE IC697CHS770 is properly grounded according to GE installation guidelines

• Verify that the control cabinet provides adequate protection against dust, moisture, and contaminants

• Use appropriate personal protective equipment when working in industrial environments

• Only qualified personnel familiar with industrial control systems should perform installation and maintenance

• Follow all local electrical codes and regulations for control panel installation

• Ensure that the backplane is securely mounted to prevent movement during vibration or shock events

• Consult the official GE Fanuc documentation for complete installation and safety instructions

• When adding or removing modules, support the backplane to prevent flexing that could damage solder joints or traces

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