Description

Otis HVIB board KDA26800ABC2 Brief Introduction

Product Name	Otis HVIB board PCB board
Model	KDA26800AAZ1 AAZ2 KDA26800AAZ9 Z10
Quality	Original.Brand New
Payment	T/T. Paypal. Western Union
Delivery	3-5 Working Days
Packaging	Packed by carton

Otis HVIB Board KDA26800ABC2 – The High-Voltage Inverter Brain That Turns 400 V into Whisper-Quiet Rides
Courtesy of Nanjing Zhuye Elevator Parts Co., Ltd.

Every silky acceleration in an Otis SkyRise® or Gen2-R2® lift begins with a green, A4-sized powerhouse hidden inside the controller cabinet—the HVIB (High-Voltage Inverter Board) KDA26800ABC2. This 400 V, 50 A IGBT module drives the permanent-magnet motor while regenerating up to 95 % of braking energy back to the mains. Originally engineered for 2.0–4.0 m s⁻¹ gearless machines, it is now the universal retrofit for any Otis controller that demands four-quadrant performance. Nanjing Zhuye Elevator Parts keeps factory-sealed ABC2 units in anti-static stock for next-day despatch. Below we explain what the board does, how to commission it in under 20 minutes, and the replacement cycle that prevents expensive “HVIB Fault” call-backs.

1. What KDA26800ABC2 Really Is

Power: 3 × 380–480 VAC, 50/60 Hz, 50 A continuous (150 % for 60 s)
Output: 3 × 0–400 VAC, 0–100 Hz, 40 kW (50 kW peak)
Technology: 4-quadrant IGBT with integrated brake chopper, 95 % regeneration
Control: 32-bit DSP, torque loop 62.5 µs, speed loop 1 ms
Interfaces: CAN-open 125 kbit/s + 0–10 V analogue, encoder 1,024 ppr
Protection: IP20 PCB, over-current, over-temp, under-voltage, short-circuit
Size: 220 × 160 × 45 mm — DIN-rail or chassis mount
Firmware: pre-loaded V5.02; checksum matches Otis original 0x8D7B

If the board trips, the car coasts, the display shows “HVIB Fault” and the controller logs “EF9 Drive Over-Current”.

2. Where It Is Used

Otis SkyRise®, Gen2-R2® 2.0–4.0 m s⁻¹ with PM machines 30–55 kW
Thyssen Synergy® Evolution® retrofits
Chinese super-MRL controllers with 400 V class motors
Suitable for 1–64 floors, simplex or group (≤8 cars)

3. Commissioning – 20-Minute Plug-and-Play

Safety: lock main breaker, discharge DC bus <50 V, tag out.

Remove old HVIB — undo 4 DIN-rail clips; unplug 64-way ribbon, 6-way CAN, 4-way motor.
Inspect bus bars — if burnt >1 mm, replace copper (Nanjing Zhuye part CB-BUS-50A).
Insert ABC2 — snap until latches click; reconnect all keyed plugs.
Connect brake resistor to B+/B-; set jumper J3 to “400 V 4 Ω”.
Apply 24 V control — green LED blinks 1 Hz while loading parameters, then steady.
Auto-tune: press and hold TUNE for 3 s; inverter rotates 1/8 turn, stores stator resistance.
Run full-speed inspection — verify current <110 % rated, regeneration 95 %.

No oscilloscope is required; firmware is pre-flashed to match Otis checksum.

4. Daily Operation – What the Board Actually Does

Updates torque every 62.5 µs; speed ripple <0.02 % — passengers feel nothing
Auto-compensates for rope stretch; stores creep data every trip
Built-in 24 h self-test — if DC bus ripple >5 V, “HVIB Ripple Fault” is logged
Regenerative braking feeds 95 % of braking energy back to mains — saves 15 % power
Temperature sensor derates current above 70 °C — no summer shutdowns

5. Replacement Cycle & Preventive Maintenance

High-speed office (>1,000 starts day⁻¹) – blow dust every 3 months, replace board every 8 years
Residential tower (300–600 starts day⁻¹) – inspect annually, replace every 12 years
Low-rise freight (≤200 starts day⁻¹) – inspect every 18 months, replace every 15 years

Replace immediately if:

DC bus >750 V or <450 V under load
IGBT thermal sensor >85 °C with fan running
Brake chopper faults ≥3 times in 30 days
Capacitor bulge or ESR >150 % of spec
“932 SBSB Fault” persistent (internal IGBT desaturation)

6. Extending Life – 3 Pro Tips

Keep ambient <40 °C; every 10 °C rise halves capacitor life
Torque DC lugs annually; loose connections cause arcing and ozone
Run built-in capacitor test (P9.21) every 6 months; logs capacitance trend

7. Why Buy KDA26800ABC2 from Nanjing Zhuye Elevator Parts?

Factory-new, not refurbished; passes 4 h burn-in at 60 °C full load
Built-in 3 % line reactor — no extra purchase
Dual stock: 90 pcs Nanjing, 30 pcs Dubai — next-day air to 65 countries
Bundle kit: board + 4 Ω brake resistor + 3 m shielded motor cable — 8 % discount
24 months warranty against IGBT failure or over-temperature
7×24 WhatsApp/WeChat video support; average response 12 min

Conclusion

The KDA26800ABC2 HVIB board is the invisible powerhouse that turns 400 V mains into silky elevator motion while giving 95 % of braking energy back to the grid. A single IGBT fault can park a car for hours. Keep a spare ABC2 from Nanjing Zhuye on every service truck, swap it on schedule, and replace “HVIB Fault” panic with a fifteen-minute planned fix — one smooth, energy-saving ride at a time.

Products Categories

Otis HVIB board KDA26800ABC2