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.
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.
