Description
- Brand: GE / GE Fanuc
- Full Model Number: IC660TBA026
- System/Series Family: GE Genius I/O
- Core Function: Current-source analog input terminal assembly for IC660BBA026
- Complete Block: IC660BBA026
- Electronics Assembly: IC660EBA026
- Input Signal: 4–20 mA
- Channels: 6 isolated analog input channels
- Input Resolution: 1 µA
- Input Impedance: 100 Ω
- Power Supply: 18–56 VDC
- Peak Current: 700 mA
- Input Conversion Time: 16.6–400 ms
- Channel-to-Channel Isolation: 1500 V RMS
- Operating Temperature: 0°C to +60°C
- Revision Variants: K, L, M and other documented revisions
- Stock Status: New Surplus / Fully Tested Refurbished — verify exact revision and mating BBA026/EBA026 assembly before shipment
The GE IC660TBA026 is documented as the terminal assembly for the IC660BBA026 Genius analog input block, with the corresponding electronics assembly identified as IC660EBA026. Published technical data specifies six isolated 4–20 mA input channels, 1 µA resolution, and 1500 V RMS channel-to-channel isolation.
Module 3: Commercial-Technical Deep Dive
A single terminal assembly can determine whether a legacy Genius analog block correctly receives six process-current signals. The GE IC660TBA026 is the field-termination assembly used with the IC660BBA026 current-source analog input block and IC660EBA026 electronics assembly. The six inputs are isolated, accept 4–20 mA signals, and are specified with 1 µA input resolution. This makes the TBA026 particularly relevant in older distributed control installations where preserving the existing field wiring is preferable to replacing the complete Genius I/O architecture.
The practical ROI comes from replacing the field-interface hardware while retaining the established BBA026/EBA026 arrangement. Published specifications list a 100 Ω input impedance, 16.6–400 ms selectable conversion time, and 1500 V RMS channel-to-channel isolation. The supply range is reported as 18–56 VDC, with approximately 12 W power dissipation. —Do not treat IC660TBA026 as a complete I/O block; it is one part of a three-piece Genius assembly architecture, and the mating electronics and block designation must match.
GE IC660TBA026
Module 4: Compatibility & Installation Traps
Migration/Compatibility
For an existing GE Genius I/O installation specified for IC660TBA026, the correct approach is an exact terminal-assembly replacement with the corresponding IC660BBA026 block and IC660EBA026 electronics assembly.
No PLC logic rewrite is inherently caused by replacing the terminal assembly. The critical compatibility checks are the BBA026 block family, EBA026 electronics, field-terminal arrangement, Genius network configuration, revision, and analog-channel wiring. GE Genius documentation and supplier records consistently identify TBA026 as the terminal assembly for BBA026.
⚠️ Field Traps (Watch Out)
- Terminal assembly versus complete block: IC660TBA026 is not the complete Genius I/O block. The full assembly uses the BBA026 block, TBA026 terminal assembly, and EBA026 electronics assembly.
- Revision mismatch: Documented variants include IC660TBA026K, L, and M, and later revisions can use different mechanical housings or require corresponding door hardware. Match the exact revision before replacing the assembly.
- Supply-range confusion: Published records describe an 18–56 VDC power-supply range for the terminal assembly. Do not assume every visually similar TBA terminal assembly uses the same voltage range.
- Analog-loop polarity: Six isolated 4–20 mA channels must be wired according to the BBA026/TBA026 terminal diagram. A wiring error can affect one loop or introduce multiple channel faults.
- Conversion-time configuration: The documented input conversion interval ranges from approximately 16.6 to 400 ms. The configured value affects response time, so preserve the original system configuration when replacing the terminal assembly.
Module 5: Quality Assurance SOP
- OEM anti-counterfeit visual inspection — verify GE/GE Fanuc markings, complete identifier, terminal layout, labels, housing condition, and evidence of unauthorized modification.
- Part-number reconciliation — photograph the full catalog number, revision suffix, serial information, and all secondary markings.
- Mechanical inspection — inspect terminal screws, wiring points, mating connectors, housing, mounting hardware, and PCB interfaces for cracks, corrosion, contamination, or mechanical damage.
- Mating-assembly verification — confirm compatibility with the IC660BBA026 block and IC660EBA026 electronics assembly.
- Power-on self-test (POST) — energize the complete /TBA026/EBA026 assembly under controlled conditions and verify normal startup and diagnostic indications.
- Analog input verification — inject calibrated 4–20 mA signals into representative channels and verify correct measurement.
- Six-channel verification — test each of the six isolated input channels individually where required by the customer’s acceptance procedure.
- Resolution and linearity check — verify representative low-, mid-, and high-range input values using calibrated current sources and confirm stable readings.
- Isolation verification — perform the approved isolation test between input channels; published specifications identify 1500 V RMS channel-to-channel isolation.
- Input impedance verification — verify the approximately 100 Ω input impedance using an appropriate measurement setup.
- Conversion-time verification — confirm the configured analog update/conversion behavior against the customer’s Genius configuration.
- Genius Bus handshake verification — test the complete block on a representative Genius network and verify correct node recognition and analog data transfer.
- Stability observation — operate multiple input channels simultaneously and monitor for drift, intermittent readings, communication errors, or abnormal heating.
- Final QC release — retain identification photographs, revision information, channel-test results, Genius network records, and packaging inspection documentation.
For a Genius analog terminal assembly, visual inspection alone provides limited assurance. The stronger acceptance result is verified 4–20 mA performance across the individual isolated channels in the complete /EBA026 architecture.
Module 6: CRO-Driven Buyer FAQ
1. What is GE ?
It is a GE Fanuc Genius I/O terminal assembly designed for the current-source analog input block. It provides six isolated 4–20 mA input channels when installed as part of the complete / assembly.
2. Is a complete Genius I/O block?
No. is the terminal assembly only. The complete architecture uses the I/O block and electronics assembly.
3. What input signal does support?
The associated architecture uses 4–20 mA current-source analog inputs. Published data lists six isolated channels with 1 µA resolution and approximately 100 Ω input impedance.
4. Are IC660TBA026K, L, and M interchangeable?
Do not assume so. Multiple revisions are documented, and later revisions can involve different electronic housings or associated mechanical components. Match the installed revision and mating hardware before substitution.
5. Can be hot-swapped?
Do not assume hot-swap capability. The terminal assembly is connected to live analog field circuits and the Genius I/O electronics. Follow the GE Genius I/O maintenance and electrical-isolation procedure before removal or installation.
6. Does require PLC programming?
The terminal assembly itself is passive interface hardware and does not require standalone programming. The complete Genius block still requires the correct network address, channel configuration, scaling, and application mapping in the host control system.
7. What warranty and technical support should I expect?
The quotation should clearly state whether the terminal assembly is new surplus, unused, or tested refurbished and specify the warranty period. Technical support should cover exact revision identification, / compatibility, terminal mapping, 4–20 mA channel testing, and documented QC results. PLC configuration changes, field-loop commissioning, and site troubleshooting should remain separate engineering services.
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