Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | UFC912A101 |
| ABB Type Designation | UF C912 A101 |
| ABB Article Number | 3BHE039426R0101 |
| Product Type | EOI / Emitter Output Interface |
| Application | ABB medium-voltage drive / power-electronics systems |
| Primary Function | Output/interface circuitry for drive power electronics |
| Nominal Control Supply | 24 VDC, according to secondary documentation |
| Reported Supply Range | 20–30 VDC in secondary references |
| Reported Maximum Power | 5 W in one technical listing |
| Reported Output Channels | 8 configurable channels in secondary listings |
| Reported Signal Type | Configurable DO/AO in secondary listings |
| Reported Analog Resolution | 12-bit |
| Reported Isolation | 1500 VAC in secondary listings |
| Reported Operating Temperature | −20 to +60°C |
| Reported Storage Temperature | −40 to +85°C |
| Reported Humidity | 5–95% RH, non-condensing |
| Approx. Dimensions | 80 × 90 × 23 mm, secondary listing |
| Weight | Approximately 0.06–0.13 kg depending on source |
The EOI designation and 3BHE039426R0101 article number are much better supported than the detailed channel ratings. One parts reference lists the unit as an “Emitter Output Interface Module,” while another identifies it as an EOI protection board. The same sources publish differing power and temperature values. I therefore recommend treating the detailed electrical values above as reference data, not commissioning limits, until they are matched against the specific ABB drive documentation.
Product Introduction
The ABB UFC912A101 3BHE039426R0101 is an EOI, or Emitter Output Interface, used in ABB power-electronics and medium-voltage drive equipment. Parts catalogs specifically associate the article with ABB’s medium-voltage drive control hardware and list UFC912A101 among ACS 1000/ACS 6000-related control and interface components.
This is not a conventional PLC digital output card. Its function belongs to the drive’s internal control-to-power-electronics interface, where signal integrity and electrical isolation are important to the overall converter architecture. For replacement work, the host drive model, board revision, connector arrangement, firmware compatibility, and semiconductor power stage should be checked before the board is installed.
UFC912A101
Engineering Pain Point
The biggest field risk with UFC912A101 is misidentification by function. Some current reseller listings call it an operator interface, while other technical listings identify it as an EOI or emitter-output interface. The latter designation is consistent with parts catalogs that place UFC912A101 among ABB medium-voltage drive control/interface boards. A board that participates in the drive’s power-electronics interface should not be substituted merely because another board has similar dimensions or a similar connector count.
Typical Applications
- ABB medium-voltage AC drive systems using the UFC912A101 interface architecture.
- ACS 2000-related drive maintenance, subject to exact hardware and firmware verification.
- ACS 6000-related power-conversion equipment where the installed BOM specifies 3BHE039426R0101.
- Replacement of an EOI/interface board during medium-voltage drive service or control-cabinet repair.
Technical Pitfalls to Avoid
- Do not confuse EOI with a conventional operator panel. Some reseller pages use “Operator Interface” as the product category, but other references explicitly identify the hardware as EOI / Emitter Output Interface.
- Match the complete ABB article number. The procurement identifier should be 3BHE039426R0101, with / UF C912 A101 recorded as the type designation.
- Verify the host drive family. A secondary source specifically discusses ACS 2000 compatibility and identifies UF C912 A111 / 3BHE039426R0111 as a functional replacement for certain ACS 2000 applications, but also notes that the A111 version does not support the SSI encoder function. That is not sufficient evidence for a universal substitution across ACS 2000 and ACS 6000 systems.
- Do not transfer ratings from another UFC-series board. UFC718, UFC719, UFC760, UFC765, UFC912, and UFC921 have different functions and article numbers. An identical connector footprint does not establish electrical equivalence.
- Check the power-stage interface before energization. An EOI board belongs to a larger converter architecture. Verify optical/electrical signal connections, associated gate-drive circuitry, and the applicable drive control configuration.
- Record the original board revision. When servicing legacy MV drives, firmware and hardware revision differences can affect the behavior of the control interface even when the basic ABB article number appears identical.
- Treat published electrical figures cautiously. Public listings disagree on power consumption, operating temperature, weight, and output configuration. These should not replace the ABB equipment-specific documentation.
Related Products
- ABB UFC718AE101 — HIEE300936R0101 — Main circuit interface board listed for ABB ACS 1000/ACS 6000-related equipment; different function from .
- ABB UFC719AE101 — 3BHB003041R0101 / 3BHB000272R0101 — I/O extension interface module; different interface role.
- ABB UFC760BE141 — 3BHE004573R0141 — INU interface board; belongs to a different converter interface function.
- ABB UFC765AE102 — 3BHE003604R0102 — Power supply module; should not be considered an EOI substitute.
- ABB UFC921A101 — 3BHE024855R0101 — Interface module from the same broader drive-control ecosystem but with a different article number and function.
- ABB UNS0881A-P — Gate-driver interface board used in ABB power-electronics systems; its role is different from the EOI.
- ABB XVC724BE101 — 3BHE009017R0101 — Voltage short-circuit detection board used in ABB drive systems; a protection/detection function rather than an EOI.
- ABB XVC770BE101 — 3BHE021083R0101 — High-voltage drive board; substantially different power-electronics interface role.
Procurement Note
For , specify the identification as:
→ UF C912 A101 → 3BHE039426R0101 → EOI / Emitter Output Interface
Before approving a replacement, record the host drive model, installed board revision, complete ABB article number, connector configuration, firmware/control version, and any associated gate-drive or power-stage hardware.
One important procurement distinction: 3BHE039426R0101 is not sufficiently documented publicly to justify treating every published 24 VDC, 8-channel, 2 A, 1500 VAC, or temperature figure as an OEM-certified rating for every application. Those values appear in secondary listings with inconsistencies. Use the installed ABB drive manual, electrical drawings, and board marking as the final authority for commissioning limits.
