Otis Elevator Inverter HVIB Drive Board KDA26800AAZ2 with Energy Regeneration

Product Specification

Ot*s Elevator Inverter HVIB Drive Board KDA26800AAZ2, Power PCB For OVFR2B‑403/404 Regenerative Inverter

KDA26800AAZ2, also known as HVIB 403/404 drive board, is the core power driver PCB for Otis OVFR2B‑403/404 regenerative elevator inverter, installed inside machine‑room control cabinet. It integrates IGBT power modules, DC‑link filter capacitors, current‑voltage sensing circuits and signal drive loops. Adopts conformal‑coated circuit board, high‑grade industrial electronic components, strong anti‑vibration and anti‑electromagnetic‑interference performance, stable for long‑time continuous elevator operation. It features energy regeneration function, feeds excess energy back to power grid for energy‑saving effect. Original‑matching interfaces and terminals support direct replacement for faulty unit without hardware modification. Widely used for Otis SKY2 elevator maintenance, fault repair and modernization projects. It solves typical faults including elevator cannot run, inverter report IPM error, over‑current failure and drive circuit breakdown.

Functions

1. Acts as power execution unit of regenerative inverter, receives PWM control signal from main control board, drives IGBT module to output adjustable frequency‑voltage power for elevator traction machine.
2. Realizes regenerative energy feedback during elevator running, reduces power consumption and improves system efficiency.
3. Real‑time monitors bus voltage, output current and IGBT temperature, delivers feedback signal to main controller.
4. Triggers multi‑layer protection such as over‑current, over‑voltage, over‑temperature and short‑circuit, cuts off power output to protect traction machine and inverter hardware.
5. Cooperates with elevator main control system to guarantee smooth start‑up, leveling and stable running performance of lift car.

Rich Content (Working Environment, Notes & Application)

Working ambient temperature:‑10℃ ~ +55℃; Relative humidity ≤90%, non‑condensing. IP20 protection grade, for indoor machine‑room cabinet installation only. Keep away from corrosive gas, conductive dust, water splash and strong electromagnetic interference. Disconnect all power supply fully before disassembly and installation; high‑voltage residual charge exists on filter capacitors, please wait for complete discharge before operation. Professional elevator technicians are required for replacement, inspection and commissioning. Regularly clean dust on board surface and heat sink to prevent overheating damage. Applicable for Otis SKY2 series passenger elevators equipped with OVFR2B‑403 / OVFR2B‑404 regenerative drive system. Common replacement for burnt, aging, faulty original KDA26800AAZ2 board in residential buildings, office and commercial complex elevator renovation jobs.

Elevator PCB Board - FAQ

Q1: How do I identify the correct replacement elevator PCB board?
To identify a replacement elevator PCB board, check the original part number, hardware revision, board markings, and elevator controller model. Clear photos of both sides of the PCB can help distinguish different versions.

Q2: Can elevator PCB boards with similar part numbers be interchangeable?
Not necessarily. Elevator PCB boards with similar part numbers may differ in hardware revisions, firmware, connector layouts, or communication protocols. Compatibility must be verified against the existing elevator system.

Q3: Does a replacement elevator PCB board require programming?
Some replacement PCB boards require firmware configuration, parameter settings, or system-specific programming. Others may already contain the required software. The correct procedure depends on the PCB model and its role in the elevator control system.

Q4: Can a faulty elevator PCB board be replaced without changing the complete control system?
In some cases, an individual PCB can be replaced if the replacement is compatible with the existing controller, firmware, wiring, and connected components. A qualified technician should confirm the fault before deciding on replacement.

Q5: What information should I provide when sourcing a replacement elevator PCB board?
Please provide the original PCB part number, hardware revision, elevator model, clear board photos, and required quantity. SULAB can help review these details and check available replacement options.