Description
KONE Elevator V3F25 Inverter Board KM725810G01 Brief introduction
| Brand | Original |
| Name | KONE Elevator V3F25 Inverter Board |
| Goods No. | KM725810G01/725813H02 |
| MOQ | 1 |
| Warranty Time | 1 year |
| Certificates | ISO9001 |
| Brand | KONE |
KONE V3F25 Inverter Board KM725810G01 – Precision Power for Smooth, Energy-Saving Elevator Rides | Nanjing Zhuye Elevator Parts
Inside every KONE V3F25 drive cabinet, the KM725810G01 inverter board is the beating heart that turns 400 V DC bus energy into silky, variable-frequency motion. Rated at 25 A continuous (80 A peak), it drives induction or permanent-magnet motors up to 2.5 m/s while returning regenerative power to the grid. When it hiccups you feel jerky starts, over-current trips or the ominous “V3F Fault” on the LCE display. Nanjing Zhuye Elevator Parts keeps genuine KM725810G01 boards in anti-static packaging, pre-flashed with the latest firmware and ready for same-day despatch—helping you restore premium rides without costly OEM delays.
Product snapshot
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KONE part number KM725810G01, hardware rev. G01, firmware bundle V3F-25.6
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80 A peak, 25 A continuous, 400 VDC bus, 0-230 V three-phase output, 4 kHz carrier
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Dual DSP + ARM Cortex-M4, cross-checked for SIL-2 safety integrity
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Integrated current sensors (±0.5 %), DC-bus voltage sensing and IGBT temperature diodes
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Regenerative braking IGBT, 1 200 V, 100 A trench-gate, efficiency > 97 %
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On-board brake chopper, 7.5 kW continuous, 20 % duty, no external resistor up to 1 000 kg
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Galvanically isolated CAN-FD and RS-485 for real-time torque, speed and health telemetry
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Operating temperature −10 °C to +70 °C, conformal-coated both sides, UL 94-V0
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IP20 aluminium heatsink, 220 × 130 × 42 mm, 1.2 kg, plug-in header, hot-swap compatible
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CE, UL, RoHS, REACH and KONE QES 2024 approved
Where it works
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KONE V3F25 drives in MonoSpace®, MiniSpace® and MaxiSpace® lifts up to 2.5 m/s, 1 000 kg
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Modernisation packages replacing obsolete V3F10 or six-step drives
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Any controller expecting < 1 % speed ripple and ±2 mm levelling accuracy
Installation method – 15-minute field swap
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Place lift on inspection mode; stop at mid-shaft; switch OFF main breaker; lock & tag.
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Wait 5 min for DC bus to discharge (< 50 V indicated on LED).
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Photograph existing wiring; note encoder plug orientation.
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Release two side latches; slide old KM725810G01 out of DIN rail.
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Insert new board until latches click—no tools required.
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Re-connect motor phases U/V/W, brake resistor, encoder, CAN-FD, 24 V logic.
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Power up; green “DC” LED must illuminate within 3 s, “MCU” LED blinks blue.
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Launch KONE Drive Tool (KDT-25) on laptop; auto-tune detects motor parameters in 90 s.
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Run 20 full-speed cycles; verify temperature < 65 °C on heatsink and no over-current alarms.
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Seal cabinet; log serial number and firmware v25.6 in maintenance book.
Replacement cycle & preventive maintenance KONE bulletin SB-V3F-2024-02 recommends:
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Visual inspection every 6 months: clean dust from fan guard, check for swollen DC-link capacitors.
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Measure IGBT Vce sat < 1.8 V at rated current; replace if > 2.5 V.
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Capacitor reform every 8 years or 30 000 operating hours; if ESR > 150 % of nominal, replace entire board.
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Replace cooling fan (24 V, 80 mm ball-bearing) every 4 years—bearing lock is the #1 cause of overtemperature faults.
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Immediate replacement if:
– LCE shows “Over-current 03” at start-up (IGBT short),
– DC-bus ripple > 5 V under load,
– heatsink temperature > 75 °C with clean filter,
– CAN-FD communication lost (blue LED dark).
Pro tip: 60 % of premature failures are traced to loose motor terminals—re-torque to 5 Nm every year.
Maintenance tips from Nanjing Zhuye Elevator Parts
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Always use shielded encoder cable, foil facing inward, grounded at board only, to prevent Hall-sensor noise.
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Never run motor cables in the same trunking as 400 V mains—induced spikes kill gate drivers.
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Keep a spare KM725810G01 in every high-rise service room; at 1.2 kg it fits in a backpack and saves a night call.
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After lightning storm, check DC-bus voltage ripple < 3 V; mains sag forces higher current and overheats IGBTs.
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Order the “Inverter Bundle” (board + fan + thermal paste) from Nanjing Zhuye Elevator Parts to eliminate parts hunting and ensure matched components.
Why buy from Nanjing Zhuye Elevator Parts?
We are a KONE-authorised distributor, importing KM725810G01 directly from the Finnish factory, pre-loading firmware V3F-25.6 and testing every unit on a 25 A motor rig for 60 min under full load. Boards are shipped in anti-static foam with a 24-month replacement warranty. Our 3 000 m² Nanjing warehouse holds 200+ units year-round; orders placed before 15:00 China time leave the same evening via DHL Express, arriving Europe or North America in 2–4 days. Bulk pricing starts at three pieces; we can pre-set motor parameters and include a loaner board to keep your lifts running during the swap.
Conclusion
The KONE V3F25 Inverter Board KM725810G01 is the silent virtuoso behind every smooth ride and energy-saving stop. By installing the genuine KONE unit, following the torque schedule and replacing it before capacitors age, you eliminate jerky motion, over-current faults and costly entrapments. Stock genuine KM725810G01 from Nanjing Zhuye Elevator Parts today—because when the inverter stops, the whole building notices.
