Description

The IC697CHS791 is a 9-slot, rear-mounting PLC rack designed for the General Electric Series 90-70 Programmable Logic Controller (PLC) platform. This baseplate serves as the foundational hardware for the 90-70 system, providing a robust interface for CPU, I/O, and communication modules. It features a dedicated slot for a plug-in AC or DC power supply and eight additional slots for system modules. The rack is engineered to support extended I/O configurations, allowing two racks to be linked to share power supply resources.

Features

• Supports all IC697 PLC module types.
• Integrated slot-sensing technology for automatic module identification, eliminating the need for manual addressing jumpers or DIP switches.
• Mechanical keying system to prevent incorrect module insertion and ensure hardware protection.
• Designed for rear mounting in 10-inch (254 mm) deep enclosures.
• Supports dual-rack operation from a single power supply module.
• Passive backplane design typically eliminates the need for active cooling fans.

Applications

• Thermal and hydropower generation process monitoring.
• Petrochemical industry distributed monitoring platforms.
• Smart grid remote monitoring and equipment management.
• Power plant desilting and descaling control systems.

Technical Specifications

Installation Guidelines

• Ensure the enclosure provides at least 10 inches (254 mm) of depth for proper rear-mount clearance.
• Verify that the rack is securely fastened to the mounting surface to prevent vibration-induced connection issues.
• Power down the system before inserting or removing any I/O modules to prevent electrical arcing or backplane damage.
• Ensure all modules are fully seated and locked into the mechanical keying guides to prevent misalignment.
• Maintain adequate ventilation around the rack; while fans are not typically required, ensure ambient air temperature remains within the 0 to 40 degC range.
• Handle modules using ESD-safe practices to protect sensitive backplane components.

FAQs

What is the primary function of the IC697CHS791?

The IC697CHS791 acts as the physical backplane and mounting chassis for the Series 90-70 PLC, providing power distribution and communication bus connectivity for up to eight I/O modules and one power supply.

Does this rack require manual addressing?

No, the rack utilizes slot-sensing technology that automatically identifies modules, removing the need for manual addressing jumpers or configuration switches.

Can this rack be used in a dual-rack configuration?

Yes, the IC697CHS791 supports extended I/O setups where two racks can be interconnected to share a common power supply module.