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Part No: IC697CHS790
Manufacturer: General Electric
Function: Rear Mount
Module Type: Standard Rack
Mounting Location: Rear(panel)
Number of Slots: 9 (plus power supply)
Type: Double width
Dimensions: 11.15 x 19.00 x 7.5 in. (H x W x D)
Internal Power Used: 20 amps at 5 VDC
Series: Mark I and II
Repair: 3-7 Day
Availability: In Stock
Country of Manufacturer: United States (USA)
IC697CHS790 is a rear mount developed by GE. It is a part of Mark I and II control system. It is a 9-slot rear mount rack developed by GE for IC697 programmable controllers, commonly used in Mark I and II control systems. This rack facilitates CPU and I/O module configurations, providing essential infrastructure for complex control applications.
One of the distinguishing features of the rack is its capability for dual-rack operation with a single power supply. When using two racks, a Power Supply Extension Cable can connect them, allowing both to operate from a single power source as long as the secondary rack’s power requirements do not exceed 5.2 amperes. This configuration reduces the need for additional power sources, simplifying system architecture and reducing equipment costs. The extension cable not only provides power but also includes sequencing signals necessary for synchronized system operation, making it suitable for setups with high I/O demands.
To ensure that only compatible modules are installed, GE has equipped CHS790 with mechanical keying. Each I/O module features a unique key that latches onto the center rail of the rack, preventing accidental insertion of incompatible modules. This safety feature is particularly useful in industrial environments where precise module alignment is critical for seamless operations. If a module is moved to a different slot, the key can be removed and reinstalled in the new position, maintaining the rack's flexibility while safeguarding against human error.
The rack is designed to accommodate high-density I/O modules that utilize detachable field wiring terminal boards. These terminal boards can handle up to forty #14 AWG wires, which are securely routed out of the terminal board cavity. A cleat for a tie wrap is provided, allowing the wiring bundle to be secured, minimizing wear and tear on the wiring and ensuring lasting stability. This connector design facilitates easy module installation and removal, allowing quick access for maintenance without compromising wiring integrity.
Each slot in the rack includes built-in slot sensing capabilities, eliminating the need for manual switches or jumpers on the modules for addressing. This feature simplifies the configuration process, allowing users to assign I/O point references directly from the IC697 programming software. This MS-DOS or Windows-based software configurator tool allows users to set up slot addressing and streamline system configuration, enhancing setup efficiency and reducing the risk of misconfiguration.
When multiple racks are used in a system, each must be assigned a unique rack number ranging from 0 to 7. The CPU rack is always assigned Rack 0, while subsequent racks are numbered based on the binary-encoded jumpers located on the backplane. These jumpers are situated directly behind the power supply, making them easy to configure during installation. This logical numbering system simplifies the management of multiple racks, ensuring that each rack communicates accurately with the CPU, enabling smooth system-wide operations.
For installations requiring two racks, supports power distribution through a Power Supply Extension Cable. This 3-foot extension cable provides the necessary connection for both power and sequencing signals, facilitating synchronized operations across the racks. The extension cable includes a 9-pin D-type connector located on the backplane and requires approximately six inches of clearance on the left side for easy access. Properly securing this cable before powering the system is essential, as the cable should not be disconnected while the system is in operation, ensuring a stable and continuous power supply.
WOC is happy to assist you with any of your GE requirements. Please contact us by phone or email for pricing and availability on any parts and repairs.
What is IC697CHS790?
It is a Rear Mount developed by GE.
How is the rack mounted?
The rack can be mounted in either a front or rear orientation, depending on your system configuration. It is designed to fit into enclosures with a depth of 10 inches (254 mm), and adequate clearance of approximately 6 inches is required on the left side for power connector access. Mounting flanges are factory-installed in the rack’s side panels to simplify the installation process.
Can two racks share a power supply?
Supports dual-rack operation from a single power supply. If the secondary rack’s power needs do not exceed 5.2 amperes for +5V power, both racks can be powered by a single supply. A Power Supply Extension Cable is available to connect the two racks, including the necessary power and sequencing signals for proper system operation.
