Product Overview

The ABB 3BHE028761R0102​ is a control/interface printed circuit board within ABB’s 3BHE drive-and-control spare family, most consistently referenced in ABB service channels against AC 800PEC drive-control racks​ (PM891-PEC / PM892-PEC backplane) and DCS800 DC-drive regulator chassis​ as a slot-populating control or interface PCB. While ABB’s public datasheet for this specific material number is less detailed than the PPD1xx or UAD1xx series, the 3BHE prefix, R0102 index style, and cross-listings in ABB spare inventories place it in the same architectural bracket: a Eurocard-form, 24 V DC backplane-powered PCB that carries a microcontroller/digital-signal section, opto-isolated I/O or interface paths, and an LED-diagnostic fascia, designed to seat into a drive-control rack’s backplane (optical/high-speed proprietary bus on AC800PEC; internal parallel/serial backplane on DCS800) and execute a subset of the drive’s control, regulation, or interfacing duties.

In an AC 800PEC​ context, the 3BHE028761R0102​ would sit as a PPD-class or specialized interface card to the right of the PM891-PEC / PM892-PEC CPU, extending the rack’s capability—possibly as a communication/bridge, a specialized AO/AI extension, or a regulator-daughter card depending on the BOM configuration. In a DCS800 DC-drive​ context (ABB’s 500–6000 A class DC drive for rolling-mill main motors, winder/unwinder, crane hoists, dynamometer absorbers), the ABB 3BHE028761R0102​ maps to one of the regulator/interface slots on the DCS800 C-bracket or control-rack assembly, handling functions such as armature/current-loop regulation, field-regulation interface, or drive-to-PLC bridging (via onboard communication transceiver—PROFIBUS DP, Modbus RTU, or ABB DriveCom depending on the DCS800 option code).

Physically, the 3BHE028761R0102​ follows ABB’s 3BHE PCB conventions: multi-layer FR-4, impedance-controlled clock/communication traces, ENIG pad finish, G3 coating (ANSI/ISA 71.04) for process/drive-cabinet atmospheres, Eurocard width (~20–40 mm depending on slot class) with plastic fascia carrying status LEDs and ejector clip, and hot-swap capability on racks that support live-insert (AC800PEC does; DCS800 control rack typically requires a controlled power-cycle for control-board swap, but the PCB mechanics are the same). For plants running AC800PEC or fleets, the ABB 3BHE028761R0102​ is a lower-rotation but strategically important spare—these control PCBs fail less often than I/O or PSU, but when they do (EEPROM corruption, voltage-regulator IC drift, backplane-pin oxidation after 12+ years), the drive drops into “control board fault” and the line stops until swap.

Technical Specifications

(Note: The 3BHE028761R0102​ appears in ABB spare databases with limited public breakout. Exact function—regulator CPU, interface bridge, communication daughter, or I/O extension—depends on whether the host rack is or . Verify the host equipment nameplate and the white label on the removed PCB before ordering. If your rack is , cross-check against PPD1xx/5xx family; if , cross-check against control-board BOM.)

Main Features and Advantages

The ABB 3BHE028761R0102​ inherits the ruggedization DNA of ABB’s 3BHE drive-control PCB line, even though its exact function slot varies by BOM. The first advantage is backplane-native integration—unlike a generic PCI/PCIe control card dropped into an industrial PC, the 3BHE028761R0102​ is pinned and firmware-matched to the host rack’s backplane protocol. On , that means the optical PEC bus with deterministic <1 ms scan to the PM891-PEC CPU; on , that means the internal ARM/DSP-hosted regulator backplane where the PCB exchanges armature-current, field-current, and speed-feedback words every PWM cycle. This native integration means no glue logic, no custom wiring to the PCB itself (field/comms land on the rack terminal block, not the PCB), and no parameter re-download—the application lives on the CPU/storage, not on the 3BHE028761R0102.

Drive-grade environmental hardening​ is the second pillar. The PCB carries G3 coating (ISA 71.04), meaning it’s tested against H₂S, SO₂, Cl₂ traces at low concentrations—common in steel-mill motor rooms, pulp-mill digester areas, and marine engine rooms where and racks live. Multi-layer FR-4 with impedance control keeps the clock/jitter clean on the microcontroller ↔ backplane transceiver path, which matters when the PCB is handling regulator-loop or communication-bridge duties at sub-ms task rates. The ENIG pad finish resists corrosion on the backplane pins over the 15–20 year service life that ABB drive cabinets are designed for.

Serviceability​ is the third win. The ABB 3BHE028761R0102​ uses the same Eurocard + fascia + ejector form factor as sibling 3BHE PCBs in the rack, so technicians already familiar with PPD114 or UAD143 swaps can handle this one without new training. On racks, hot-swap means the PM891-PEC CPU re-enumerates the 3BHE028761R0102​ on the next I/O scan and relinks the application mapping automatically. On , a controlled power-cycle of the control rack is typical for a control-board swap, but the mechanical action is the same: unlock fascia, withdraw, seat replacement, lock, torque the rack TB if disturbed. Under 10 minutes either way. No drive re-tuning, no armature/field re-commutation—the regulator parameters live on the CPU flash or on the removable parameter card (depending on revision), not on the 3BHE028761R0102.

Spare-strategy value​ closes the case. Because 3BHE028761R0102 is less frequently cycled than PSU or I/O (control boards fail maybe 1× per 12–15 years vs. I/O every 5–8), plants often omit it from the shelf—then scramble when a mill-stand or a dyno throws “Control Board Fault” at 2 AM. Keeping one ABB 3BHE028761R0102​ (confirm BOM fit against your rack first) covers that tail risk for ~the cost of a dinner. For OEM drive-service contractors, it’s a default “add-on” line when replenishing PPD114 / UAD143 / PSU spares.

Application Field

The ABB 3BHE028761R0102​ tracks to wherever ABB or racks are deployed, since those are the two host platforms that consistently cross-list this material number in ABB’s spare databases.

​ → Rolling-mill main-stand drives, marine pod propulsion converters, EV-powertrain / engine dynamometer absorbers, high-power converter test cells. The 3BHE028761R0102​ here acts as a PPD-class or specialized interface/regulator daughter populating a slot to the right of the , extending AO/AI/communication or handling a sub-loop (e.g., outer-loop speed PI that feeds the torque reference, or a bridge to a secondary PLC over PROFIBUS/Modbus). Failure shows up as a PEC I/O or communication sub-system alarm, not necessarily a full drive trip—but on a tandem-mill stand where the outer loop sits on this PCB, loss of that loop can force a stand-down.

​ → is ABB’s 500–6000 A DC drive, deployed on blooming-mill main motors, cold-mill bridles, unwinders/rewinders (tension-regulated), overhead-crane hoist drives, marine winch, dyno absorbers, and cement-kiln auxiliaries. The ABB 3BHE028761R0102​ in this context sits on the C-bracket control rack—possibly as the regulator CPU daughter, the armature-current-loop co-processor, or the drive-to-PLC communication interface (PROFIBUS DP V0/V1, Modbus RTU, ABB DriveCom). Failure symptoms: “Control Board Fault” on the operator panel, loss of PLC communication (if the 3BHE028761R0102​ is the comms bridge), or regulator-loop watchdog trip. In a rewinder line, losing tension-loop regulation means the strip can over-tension and break—so spare readiness matters.

Retrofit/service​ scenarios: As and fleets pass the 10–14 year mark, control PCBs show EEPROM corruption (from repeated power cycling in outage windows), voltage-regulator IC drift on the 24 V → 5 V / 3.3 V local rails, and backplane-pin oxidation in humid motor rooms. The ABB 3BHE028761R0102​ is the direct-fit spare called out in ABB’s / service BOMs; swap restores the rack without touching armature/field tuning () or PEC application code (). For drive-service contractors covering mixed ABB fleets, confirming whether the subject rack is vs. is the first diagnostic step—because while both use 3BHE PCBs, the backplane and BOM are not cross-compatible. If you’re unsure, send us a photo of the rack nameplate + the removed PCB white label and we’ll confirm.