GE IC693CHS398C Expansion Base | Series 90-30

The IC693CHS398C functions as an expansion base for the Series 90-30 PLC system. This unit adds ten additional I/O slots to your existing controller configuration. It connects to the main CPU base through a dedicated expansion cable. Therefore, this expansion base enables large control systems without replacing existing hardware.

Technical Specifications

We engineered this expansion base for reliable operation in industrial environments. Its rugged metal construction provides excellent mechanical support for installed modules. Moreover, the unit includes a passive backplane with no active electronic components.

Parameter	Specification
Dimensions (H x W x D)	5.5 x 18.5 x 5.1 inches (140 x 470 x 130 mm)
Weight	2.27 kg (5.0 lbs)
Slot Count	10 I/O module slots
Backplane Type	Passive bus expansion backplane
Connection Interface	1x 50-pin expansion cable port
Power Supply Slot	1 dedicated power supply position
Mounting	Panel or rack mount with four screws
Operating Temperature	0°C to 60°C (32°F to 140°F)

Bus Architecture and Signal Flow

The IC693CHS398C provides a passive backplane for all installed I/O modules. This base carries both power and data signals between modules simultaneously. It supports any combination of discrete, analog, and specialty modules. Consequently, you can build a flexible I/O configuration for your specific application needs.

Physical Design and Slot Layout

This expansion base features a heavy-duty steel chassis for mechanical rigidity. Ten module slots accept standard Series 90-30 I/O modules without adapters. The leftmost slot accommodates the power supply module exclusively. Each slot includes a plastic keying mechanism to prevent incorrect module insertion.

Cable Connection and Bus Extension

The IC693CHS398C requires a single 50-pin expansion cable to function. This cable carries the full I/O bus from the main CPU base. You can locate this expansion base up to 50 feet away from the primary base. Always use a shielded cable for runs exceeding 25 feet to maintain signal integrity.

Energy State and Power Distribution

This passive expansion base does not contain any energy storage components internally. It draws all necessary operating power from the installed power supply module. The backplane distributes 5V DC to each occupied I/O slot equally. No battery backup exists on this unit for data retention purposes.

Installation Guidance

Mount the IC693CHS398C using four screws into a panel or rack. Install the power supply module into the dedicated leftmost slot first. Connect the expansion cable from the CPU base to this unit’s port. Verify all module keys align correctly before inserting each I/O card. Always turn off system power before connecting or disconnecting the expansion cable.