Description
Key Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | ASE2UDC920AE01 |
| ABB Part Number | 3BHB022793R0001 |
| Manufacturer | ABB |
| Product Type | Digital Control Module |
| Hardware Identification | ASE2 UD C920 AE01 |
| Reported Output | 24 VDC |
| Reported Operating Temperature | -20°C to +60°C |
| Reported Storage Temperature | -40°C to +85°C |
| Reported Humidity | 5–95% |
| Weight | Approximately 0.5–2.0 kg, depending on configuration/source |
| Installation | System-specific; verify mounting and enclosure arrangement |
| Communication / I/O | Not sufficiently documented in reliable public sources |
| Protection Rating | Not verified |
| Exact Supply Voltage | Not verified; do not use secondary listings as an installation specification |
Procurement note: Publicly available descriptions conflict on whether the unit should be classified as a digital control module, digital output module, communication module, or processor module. The ABB part number 3BHB022793R0001 consistently identifies the ASE2 UD C920 AE01 hardware, but the conflicting secondary specifications are not sufficient to establish a complete installation specification.
Product Introduction
The ABB ASE2UDC920AE01, identified by ABB part number 3BHB022793R0001, is a specialized digital control module associated with ABB industrial control and excitation-system hardware. Available component references identify it as an ASE2 unit, with some sources specifically associating the hardware with ABB UNITROL excitation equipment.
Its main value is not generic PLC functionality. It is a system-specific replacement component. For a plant maintaining older ABB control or excitation equipment, matching the exact part number, hardware revision, enclosure arrangement, and system configuration is more important than treating it as a generic controller.
ASE2UDC920AE01
Application Scenarios & Field Pitfalls
Engineering Pain Point
A common maintenance problem with legacy excitation and control equipment is not finding a replacement board—it is finding a board that actually matches the installed hardware revision. A visually identical ASE2 assembly can still create commissioning problems if its identification, firmware, associated boards, or system configuration differs. The ASE2UDC920AE01 should therefore be treated as a controlled replacement part rather than a universal digital module.
Typical Applications
- Power Generation — Replacement hardware within ABB excitation-system control equipment.
- Utility Power Plants — Maintenance of legacy generator excitation and associated control cabinets.
- Industrial Power Generation — Spare-part replacement where ABB excitation/control hardware remains in service.
- Heavy Process Plants — Planned maintenance and emergency replacement of installed ABB control assemblies.
Technical Pitfalls to Avoid
- Do not rely on the model number alone.
Confirm the complete 3BHB022793R0001 / ASE2UDC920AE01 identification, hardware revision, labels, and installed assembly before ordering. Secondary listings give inconsistent classifications and specifications. - Check the surrounding system, not just the board.
ASE2 hardware may operate as part of a larger excitation/control assembly. Record the adjacent boards, connectors, cabinet position, and existing configuration before removing the failed unit. - Do not assume published electrical data is installation-grade data.
A 24 VDC output specification appears in one secondary source, while other listings provide incomplete or contradictory voltage information. Verify the OEM documentation and cabinet drawings before applying power. - Inspect the replacement before energization.
Check connector condition, PCB contamination, storage damage, labels, revision markings, and signs of previous field repair. For a long-stored spare, controlled bench inspection is cheap insurance.
Related Products
- ABB 3BHB022793R0001 — The corresponding ABB material number for ASE2UDC920AE01. Use both identifiers when cross-checking procurement records and existing cabinet documentation.
- ABB ASE2 UD C920 AE01 — The equipment designation associated with 3BHB022793R0001. This is the closest identification match and should be the first reference when verifying a replacement.
- ABB UFC912A101 — An ABB control/interface board appearing in the same broader ABB drive and control spare-parts environment. It should not be treated as a drop-in substitute for ASE2UDC920AE01; its function and application must be established from the host-system documentation.
- ABB UFC921A101 — Another ABB control/interface board used in related industrial power-control hardware. Functionally different from the unit, so substitution requires an engineering compatibility check.
- ABB UFC718AE101 — ABB interface-board hardware found in the same family of industrial control spare parts. It may be relevant when troubleshooting an ABB control cabinet, but it is not a direct replacement for .
- ABB 3BHB006338R0001 — UNS 0881 excitation main control board. It belongs to a different control assembly and is better viewed as complementary reference hardware when identifying an ABB excitation-system architecture rather than as an alternative to .
- ABB 3BHE024577R0101 — PPC907BE control board used in ABB drive-related systems. Its role is different from , making it an architectural comparison rather than a drop-in replacement.
- ABB 3BHE003604R0102 — UFC765AE102 board associated with ABB drive hardware. Useful as a related spare-part reference when the wider cabinet contains ABB power-electronics control boards, but compatibility must be established at the system level.
Procurement takeaway: For , the safest purchasing approach is to match the complete ABB identification and the installed system documentation rather than selecting a replacement based only on the generic description “digital module.” The public specifications available for this part are inconsistent, so critical voltage, I/O, communication, firmware, and environmental requirements should be verified against the original ABB documentation before installation.
