Description
The GE IC660BBA026 is engineered for field applications demanding high-fidelity analog signal acquisition and robust distributed control. Water treatment plants, process industries, chemical refineries, and pipeline monitoring facilities rely on this Genius current-source input block to aggregate 4–20 mA instrumentation data from flow meters, pressure transducers, analyzers, and remote sensors directly at the field’s edge. Its channel isolation and advanced diagnostics make it ideal for environments where sensor accuracy, cabling resilience, and continuous system uptime are vital.
In distributed automation architectures, the GE IC660BBA026 is commonly deployed for remote data gathering—installations that require scalable analog input capacity away from centralized PLC cabinets. It is especially useful for brownfield modernization, environmental monitoring, and long-cable installations prone to noise or ground-loop faults. OEMs and plant designers appreciate its ability to integrate seamlessly on the Genius bus, reducing wiring, consolidating diagnostics, and driving down total ownership costs for industrial networks.
Designed as a 6-channel analog current-source input block, the GE IC660BBA026 converts field device currents (typically 4–20 mA) into digital data for the control system. Each input offers a dedicated 24VDC loop supply, independently isolated to ensure maximum signal fidelity and safety. No user calibration is required—installation, scaling, and diagnostics are handled via software, with full Genius bus compatibility for effortless integration into GE Fanuc and Emerson control platforms.
The module stands out for advanced onboard diagnostics: it provides open wire detection, over/under-range fault reporting, programmable high/low alarms, and internal fault messaging directly to the PLC or hand-held monitor. Engineers can scale each input linearly to suit application specifics, converting raw data into engineering units without external signal conditioning. The block’s “Unit OK” and “I/O Enabled” LEDs speed up commissioning and online troubleshooting, while BSM capability supports robust network switching where dual-bus redundancy is required.
- IC660BBA026
- IC660BBA026
Technically, the GE IC660BBA026 delivers impressive performance: 0.1% full-scale accuracy at 25°C, user-selectable conversion times (16ms to 400ms) to balance noise rejection and throughput, and 1μA resolution for precise measurement. Its inputs have channel-to-channel and block-to-block isolation rated at 1,500V RMS, protecting the system against ground faults, surges, and electrical interference—crucial in extensive and harsh plant environments.
Long-term reliability is ensured with rugged field-mountable construction, 12W maximum heat dissipation, and resilience against vibration, dust, and humidity. The module operates flawlessly from 0°C to 60°C with no calibration drift and minimal maintenance. Flexibility also extends to power supply: the block runs on 18–56VDC power, enabling use with standard field supplies and backup systems.
| Parameter | Value |
|---|---|
| Model | IC660BBA026 |
| Brand | GE Fanuc / Emerson |
| Type | Genius 6-Channel Current Source Analog Input Block |
| Channels | 6 isolated analog current inputs |
| Input Range | 4–20 mA (0–25 mA overrange) |
| Input Impedance | 100 Ω ± 5% |
| Loop Supply | 24VDC, independent per channel |
| Accuracy | 0.1% full scale at 25°C |
| Resolution | 1μA (at 200ms conversion time) |
| Isolation | 1,500V RMS channel-to-channel/block-to-block |
| Power Supply Voltage | 18–56VDC |
| Max Current Draw | 700mA |
| Heat Dissipation | 12W max |
| Conversion Time | 16–400ms (programmable) |
| Mounting | Field block direct |
| Dimensions | 8.83in x 3.56in x 4.42in |
| Weight | ~4 lbs (1.8 kg) |
| Diagnostics | Alarm reporting, open wire, over/under-range |
| Environmental Rating | -20°C to 60°C, 5–95% RH |
| Certifications | UL, IEC, CSA |
IC660TBA026 – Terminal assembly for secure wiring and field installation.
IC660EBA026 – Electronics assembly, replacement for modular upgrades.
IC660BSM021 – Bus Switching Module for network redundancy and failover.
IC660BBD120 – Intelligent relay block for discrete output tasks in distributed I/O.
IC693CMM301 – Genius bus network interface module for Series 90-30/90-70 PLCs.
IC660BRD025 – Replacement terminal strip for wiring maintenance.
IC660EBA102 – Extended electronics assembly for increased channel scope.
IC660TBA102 – Extended terminal assembly, supporting larger installations.
For installation, check that the field wiring and power supply meet required voltage and isolation specs. Mount the block securely outside main panels or cabinets, preferably shielded from direct moisture or vibration extremes. Wire analog loops to each input channel independently, observing cable shielding and terminal tightening protocols for data integrity. Configure scaling and diagnostic thresholds via software, and activate BSM functions if redundant network architectures are needed.
Maintenance should include biannual reviews of LED indicators, cable terminations, and fault logs. Periodic checks on heat dissipation and environmental sealing defend against drift and degradation. With advanced diagnostics and robust isolation, the block requires minimal service—though firmware and configuration updates should be aligned with wider system changes.





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