GE Fanuc IC660BBA025 Output Block

Core Performance & Industrial Application

The GE Fanuc (Emerson) IC660BBA025 is a 24/48 VDC current-source analog output block for the Genius I/O bus.

It provides six independent 4-20 mA current-loop output circuits; circuits 5 and 6 can also drive voltage loads.

Each loop is powered and isolated by the block, so no separate loop supply is needed; dual 12-bit DAC controls 0-24 mA per channel.

Output accuracy is 0.15% of full scale at 25℃, resolution 6 µA, update cycle 25 ms, with overrange 0-24 mA.

On-board diagnostics report underrange, overrange and feedback error circuit-by-circuit, with CPU redundancy and output-hold options.

It is used as spare replacement in legacy Genius distributed I/O cabinets.

Technical Specifications

▶ Product type: Current-source analog output block

▶ Brand: GE Fanuc (Emerson)

▶ Model: IC660BBA025

▶ Platform: Genius I/O Series 90

▶ Outputs: 6 × 4-20 mA current source; ch.5/6 voltage capable

▶ Output range: 4-20 mA; overrange 0-24 mA; load 0-850 Ω

▶ Accuracy: 0.15% FS @25℃; resolution 6 µA; update 25 ms

▶ Block power: 24/48 VDC (18-56 VDC), max 600 mA, 10% ripple

▶ Output type: Dual 12-bit DAC, isolated loop power

▶ Diagnostics: Underrange/overrange/feedback error, output hold last state

▶ Configuration: Handheld monitor IC66*HHM501G; software scaling

▶ Feature: BSM dedicated digital output, CPU redundancy support

▶ Operating temperature: Per GFK-0867B general standards

▶ Protection rating: IP20

▶ Country of origin: USA

▶ Compliance: UL, CE certification

Industry Applications

Applied in legacy Genius I/O distributed control cabinets driving 4-20mA valves, drives and instrument spare replacement.

Note: Confirm block suffix, power supply and loop wiring against nameplate before ordering