GE Fanuc IC660BBA024 Genius Analog Combination Block

The IC660BBA024 is a standalone 24/48 VDC current source analog combination block within the GE Fanuc Genius I/O system. Featuring four 4–20 mA current inputs and two 4–20 mA current outputs, this smart block provides localized signal processing, analog-to-digital conversion, and direct serial communication across the Genius bus topology. It enables precise current loop interfacing for process transmitters, control valves, and field instrumentation without requiring separate external signal conditioners.

Channel Architecture and Signal Handling

All four analog input channels operate with a standard 4–20 mA current range, delivering high accuracy and resolution for differential process variable monitoring. The two analog output channels act as active current sources, driving control loop actuators directly across a 4–20 mA range. Each channel includes built-in open-wire detection, overcurrent protection, and programmable alarm thresholds configured on an individual channel basis.

Power Requirements and Diagnostics

Designed for low-voltage industrial control panels, the module operates across a nominal input supply of 24 VDC or 48 VDC (spanning an allowable operational range of 18 to 56 VDC). The block features continuous self-diagnostics that report power supply brownouts, calibration shifts, open loops, and CPU communication faults to the main PLC or a Handheld Monitor (HHM). The ruggedized enclosed housing weighs approximately 3.20 lbs (1.45 kg) and mounts on a panel or standard DIN rail setup.

Technical Specifications

Frequently Asked Questions

Q: Are the current outputs on the IC660BBA024 current sourcing or current sinking? A: The IC660BBA024 features active current sourcing outputs, delivering power directly to the 4–20 mA output current loop.

Q: What power supply range is required for the IC660BBA024? A: The module accepts a nominal power supply of 24 VDC or 48 VDC, operating safely across a wide DC voltage window of 18 to 56 VDC.

Q: Can input and output alarm thresholds be set independently per channel? A: Yes, each of the 4 analog inputs and 2 analog outputs can be individually configured for low/high limits and fault conditions using a Handheld Monitor or PLC programming software.