The GE Fanuc IC660BBA106 is an intelligent analog input block within the Genius distributed I/O family. This module is specifically designed to interface with 4-20mA current loop sensors, providing six individually isolated input channels. Powered by 115VAC, it converts field analog signals into precise digital data, allowing for high-accuracy process monitoring across industrial networks.

Technical Specifications & Datasheet

General Parameters

• Manufacturer: GE Fanuc (Emerson Automation)
• Part Number: IC660BBA106
• Input Type: Current Source Analog Input
• Number of Inputs: 6 Isolated Channels
• Input Range: 4 to 20 mA (Standard), 0 to 25 mA (Extended)
• Accuracy: ±0.1% of full scale at 25°C
• Resolution: 1 µA (at 200ms conversion time)
• Isolation: 1500V RMS (Channel-to-Channel and Channel-to-Ground)

Physical Attributes

• Dimensions: 8.83 x 3.56 x 4.42 inches
• Weight: 3.13 lbs (1.42 kg)
• Country of Origin: USA
• Heat Dissipation: 12 Watts maximum
• Power Requirement: 115VAC (nominal); Range: 93–132 VAC, 0.25A

 

Application Fields

The IC660BBA106 is widely utilized in process industries where signal integrity and local diagnostics are critical:

• Oil & Gas Refining: Monitoring pressure and level transmitters in hazardous areas via isolated loops.
• Chemical Processing: Precise tracking of flow rates and temperature transmitters in reactor vessels.
• Power Plants: Real-time feedback from valve positioners and steam pressure sensors.
• Wastewater Management: Integrating turbidity and pH sensors into a distributed control network.

 

Product Usage Instructions

1. Mounting: Install the block in a protective enclosure. It can be mounted vertically or horizontally, but ensure at least 2 inches of clearance around the unit for proper airflow and cooling.
2. Wiring: Connect the 115VAC power to terminals 6 and 7 on the terminal assembly. Ensure all analog input cables are shielded twisted-pair and grounded at one end to prevent noise interference.
3. Baud Rate Selection: Set the Genius bus baud rate (38.4, 76.8, or 153.6 Kbaud) using the internal switches to match your specific network configuration.
4. Configuration: Use a Genius Hand-Held Monitor (HHM) or your PLC programming software (such as Proficy Machine Edition) to assign the Serial Bus Address (SBA) and set alarm limits for each channel.
5. Scaling: Program the input conversion time (between 16.6ms and 400ms). Longer conversion times provide higher resolution and better noise rejection for sensitive process measurements.

 

Q&A: Common Questions

Q: What is the benefit of the “Current Source” feature? A: Each input channel on the IC660BBA106 provides a 24VDC current loop power supply, meaning it can power 2-wire transmitters directly without needing an external power supply for the loop.

Q: Can this block detect a broken wire in the field? A: Yes, the block features advanced diagnostics that can report “Open Wire” faults for 4-20mA signals, as well as over-range and under-range conditions.

Q: Is it compatible with newer PACSystems RX3i controllers? A: Yes, the IC660BBA106 can be integrated into modern RX3i systems through the use of a Genius Bus Controller (GBC) module or a Genius Gateway.

 

Industry News & Trends

The GE Fanuc Genius I/O platform remains a cornerstone of industrial reliability, despite reaching “Mature” status in recent years. Many large-scale manufacturing facilities continue to rely on the IC660BBA106 because of its rugged design and exceptional 1500V isolation, which is often superior to modern, lower-cost I/O alternatives.

Current market trends highlight the importance of “Sustainability in Automation.” Rather than replacing entire control infrastructures, engineers are increasingly using the IC660BBA106 as a bridge to modernize their data collection. By keeping the reliable Genius I/O blocks in place and upgrading the central CPU to high-performance platforms, plants can achieve modern analytics capabilities while avoiding the massive costs and risks associated with complete rewiring. The 115VAC versions remain in high demand due to their commonality in established North American industrial grids.