General Electric IC660BBA105 Genius Current-Source Analog Output Block

Description

The General Electric IC660BBA105 is a high-performance Genius 115 VAC current-source analog output block designed for industrial automation and control applications. Featuring six independent output circuits, this module is engineered to supply precision 4 to 20 mA analog signals directly to field devices without requiring an external loop power supply. In addition to standard current loop outputs, channels 5 and 6 provide configurable support for voltage applications. Built for robust plant-floor integration, the unit incorporates advanced diagnostics, software-configurable scaling, and dedicated control for Bus Switching Modules.

Operating within the GE Genius I/O network, the IC660BBA105 delivers reliable performance with an output accuracy of 0.15% of full scale reading at 25 degrees Celsius and a fine output resolution of 6 microamps. The module internally manages power isolation between the loop circuits and the rest of the block, ensuring high operational integrity. Configurable features such as Hold Last State, circuit scaling to engineering units, and individual circuit fault reporting allow engineers to tailor the output behavior precisely to process requirements.

Features

• Six independent 4 to 20 mA analog output circuits with integrated loop power
• Channels 5 and 6 configurable for voltage output applications
• Software-configurable parameters including scaling, fault reporting, and hold-last-state behavior
• Advanced diagnostics including overrange, underrange, and output feedback error detection
• Dedicated digital output control for Bus Switching Modules (BSM)
• No hardware calibration required for operation
• Unit OK and I/O Enabled status LEDs for immediate visual diagnostics

Applications

• Process control systems requiring precise 4-20 mA valve and actuator positioning
• Industrial manufacturing plants utilizing GE Genius distributed I/O architectures
• Legacy GE Fanuc automation upgrades requiring reliable analog control loops
• Data acquisition systems needing isolated current-source loop outputs

Technical Specifications

Connections / Interfaces

• Terminals 1 to 4: Serial bus connections (Serial 1, Serial 2, Shield In, Shield Out) supporting AWG #12 to #22 wire
• Terminals 5 to 7: Block power (H, N, and safety ground)
• Terminals 9 and 10: Bus Switching Module (BSM) interface connections
• Terminals 11 to 32: Field device connections providing IOUT, RTN, VOUT, JMP, and GND points per channel

Installation Guidelines

The IC660BBA105 Genius I/O block is classified as open equipment and must be installed within a suitable protective electrical enclosure free from airborne contaminants and excessive moisture. Maintain a minimum clearance of 2 inches above and below the module to ensure adequate cooling airflow. Mount the unit securely using 8-32 screws and star washers through the upper and lower flange notches to maintain proper ground integrity. Connect the green ground screw to a reliable plant ground system using a minimum AWG #12 wire. Always ensure power is removed before servicing or replacing the electronics assembly.