Technical Specifications
| Parameter | Value |
|---|---|
| Product Model | 2UBA004787R0001 |
| Manufacturer | ABB Ltd (Low Voltage Drives Division) |
| Product Type | Compact General Purpose Frequency Converter (VFD) – XZ C8x1 Series |
| Input Voltage | 3-phase 380–480 V AC, 50/60 Hz |
| Rated Output Power | 0.75 kW (1 HP) |
| Rated Output Current | 4.8 A (at 400 V, 40°C ambient, continuous duty) |
| Control Methods | V/F scalar, Sensorless Vector Control (SLVC) |
| Overload Capacity | 110% for 60s, 150% for 3s per 10min cycle |
| Built-in Communication | Modbus RTU (RS-485), standard |
| Application Macros | Pump/Fan, Constant Torque, PID, Hand-Off-Auto (preloaded) |
| Protection Features | Short-circuit, overcurrent, overtemperature, phase loss, under/overvoltage |
| Protection Rating | IP20 (base unit), conformal coating (XZ variant, IPC-CC-830B compliant) |
| Mounting | 35mm DIN rail or wall-mount (brackets included) |
| Operating Temperature | -10°C to +40°C (rated), +40°C to +50°C derated |
| Certifications | CE, UL, cUL, RoHS, EN 61800-3 C2 EMC |
Main Features and Advantages
The ABB 2UBA004787R0001 stands out in the micro-VFD market by combining ABB’s enterprise-grade drive reliability with a form factor and price point aimed at small-machine and building-automation buyers who refuse to compromise on durability. The headline differentiator of the XZ C8x1 variant is its conformal-coated PCB stack: all critical electronics are protected against condensation, salt fog (tested to IEC 60068-2-52 severity 3), and mild cleaning-agent splash. For teams managing pumps in coastal WWTPs, rooftop HVAC units, or food processing areas with periodic washdown, this eliminates the need for sealed NEMA 12 enclosures that add $200+ per drive to project costs.
Commissioning speed is the second core advantage. The ABB 2UBA004787R0001 ships with ABB’s Drive Composer quick-start wizard accessible via the integrated 4-digit 7-segment keypad and 2 navigation buttons—no PC or dongle required for basic setup. Select the preloaded pump/fan macro, enter motor nameplate data, and the drive auto-tunes sensorless vector parameters in 30 seconds. For DCS-integrated installs, Modbus RTU is built in: RS-485 terminals are pre-landed on the control block, with ABB’s standard 100+ register map already familiar to most BMS and PLC programmers from legacy ACS380/550 projects. No extra communication cards or firmware patches required.
Energy performance rounds out the value case. On variable-torque loads like centrifugal pumps and HVAC fans, the ABB 2UBA004787R0001‘s pump/fan macro adjusts switching frequency and uses built-in PID to track pressure/temperature setpoints, cutting motor energy consumption by 20–40% compared to DOL or star-delta starting. Sleep/wake functionality shuts the drive down when demand drops below a set threshold, eliminating idle power draw on trickle-load systems. 110% overload capacity handles minor load spikes from clogged pump impellers or belt slip without tripping, reducing nuisance downtime.
For retrofit programs, the ABB 2UBA004787R0001 is a low-friction drop-in for ABB ACS380-01-04A8-4 or ACS550-01-04A8-4 legacy units: power terminals (L1/L2/L3 in, U/V/W out, PE) align 1:1, control terminal layout is 90% consistent, and Modbus registers for start/stop, speed reference, and fault feedback are backwards-compatible. Most swaps take under 30 minutes including DCS loop check, avoiding multi-day downtime from switching to non-ABB platforms.
Application Field
The ABB 2UBA004787R0001 XZ C8x1 frequency converter is deployed wherever a 0.75kW-class 3-phase induction motor needs variable speed control in space-constrained or mildly harsh environments, prioritizing commissioning simplicity over high-end servo dynamics. Its most common habitat is small water/wastewater lift stations: 0.75kW submersible or centrifugal transfer pumps where the XZ conformal coating resists high humidity and occasional H₂S condensation inside pump house panels, and the pump/fan macro with sleep/wake cuts energy use by 30%+ during low-demand night shifts.
HVAC is the second major vertical: small rooftop AHU supply fans, chilled water circulation pumps for small office buildings, and commercial kitchen exhaust fans all fall in the 0.75kW range. The ABB 2UBA004787R0001 fits inside compact rooftop control boxes (75mm width saves panel space) while built-in Modbus lets the BMS pull motor current, fault status, and runtime hours without extra wiring. Food and beverage processing lines use the XZ variant for small conveyor feeders, dough mixers, and bottle rinser pumps where periodic washdown creates humid, mildly corrosive panel environments that kill uncoated drives.
Retrofit scenarios are equally high-volume: facilities still running 2000s/2010s-vintage ACS380 or ACS550 0.75kW units face obsolescence as ABB phases out those legacy lines, and the ABB 2UBA004787R0001 is the authorized replacement SKU. It carries forward the same terminal layout and Modbus compatibility, so panel wiring and DCS logic don’t need rework—only a 10-minute parameter upload from the legacy drive’s keypad via ABB’s drive-to-drive copy function. For small-machine OEMs (woodworking, packaging, laboratory equipment), the C8x1 frame’s DIN-rail mount and IP20 rating let it snap into standard control cabinets alongside contactors and safety relays, making it a default choice for 0.75kW variable-load drives.
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