Description
KONE Elevator Brake Board KM954425G01 Brief introduction
| Brand | Original |
| Name | KONE Elevator Brake Board |
| Goods No. | KM954425G01 |
| MOQ | 1 |
| Warranty Time | 1 year |
| Certificates | ISO9001 |
| Brand | KONE |
KONE Brake Board KM954425G01 – Operation, Calibration & Replacement Guide
Nanjing Zhuye Elevator Parts – OEM stock, global shipping, 24/7 support
Nanjing Zhuye Elevator Parts – OEM stock, global shipping, 24/7 support
The KM954425G01 is the SIL-2 brake control board that commands every KONE MiniSpace® and MonoSpace® gearless machine from 320 kg to 1,600 kg. Mounted inside the controller cabinet, it converts 24 Vdc logic into precision 110 Vdc magnet current, monitors shoe wear, logs emergency stops and still has spare I/O for load-weigh interlock. A single shorted IGBT or a cracked current-sense resistor will throw a “75” fault and set the car to Phase-II recall. Nanjing Zhuye Elevator Parts keeps hundreds of factory-tested KM954425G01 brake boards in Rotterdam and Nanjing so you can restore safe, silent braking the same day. Below is an 800-word field manual that explains correct usage, on-car calibration and the replacement cycle that keeps your elevators safe, smooth and code-compliant.
1. What the KM954425G01 does
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110 Vdc, 3 A continuous, 8 A peak for 2 s, PWM 20 kHz
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Dual-channel current feedback, 0.1 % accuracy, SIL-2 certified
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Shoe-wear sensor input (0-10 V) and emergency stop logger
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Dual CAN (Power-CAN & Car-CAN) for real-time diagnostics
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IP20 steel housing, built-in heat-sink, fan 24 Vdc 0.2 A
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UL/CE certified to EN 81-20/50 and CSA B44.1 for 15-year design life
2. Tools to carry
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KM954425G01 brake board (Nanjing Zhuye part #KN-BRK-KM954425G01-3A) in anti-static box
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3 mm & 4 mm Allen keys, 10 mm & 13 mm sockets
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Torque wrench (2–25 N·m) and 1,000 Vdc multimeter
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KONE E-Link Service Tool (EEST) laptop with brake plug-in licence
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IR thermometer and vibration pen
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Lock-out / tag-out kit
3. Installation – 45 minutes with two technicians
Safety: place the car on top-of-travel buffers, open the main disconnect and wait 5 min for DC bus to discharge (<50 V).
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Photograph every power and signal connector – note 110 Vdc +/-, brake coil, shoe sensor, CAN.
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Remove four M6 flange bolts; slide the old board out of the card guides.
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Check the heat-sink pad – if torn, replace with new 0.5 mm thermal sheet supplied.
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Mount new KM954425G01; torque bolts to 15 N·m.
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Re-connect all plugs; apply KONE-supplied conductive grease on DC lugs.
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Power up – STATUS LED blinks green 3 times then solid; CAN LED flashes every 100 ms.
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Launch EEST → Brake → Auto-Calibrate; board measures coil resistance and stores values.
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Run 3 full-speed cycles; verify brake release time <0.3 s and holding current 1.2 A ±0.1 A.
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Record serial number, date and calibration values in CMMS.
4. Functional test – prove it to the controller
a) Release time: <0.3 s from command to zero torque.
b) Holding current: 1.2 A ±0.1 A at 110 Vdc.
c) Shoe wear: 0–10 V linear, 5 V = 50 % life.
d) Temperature: heat-sink <60 °C after 30 min run.
e) Export EEST report and attach PDF to site file.
b) Holding current: 1.2 A ±0.1 A at 110 Vdc.
c) Shoe wear: 0–10 V linear, 5 V = 50 % life.
d) Temperature: heat-sink <60 °C after 30 min run.
e) Export EEST report and attach PDF to site file.
5. Preventive maintenance schedule
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Monthly – visual sweep for dust, fan noise or swollen capacitors.
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Quarterly – measure heat-sink temperature <60 °C with IR gun.
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Annually – scope PWM outputs; ripple must be <2 % at 20 kHz.
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Every two years – replace the 470 µF, 200 V capacitor – ESR doubles every 5 years.
6. Replacement cycle – duty and environment decide
KONE specification: 15 years. Nanjing Zhuye analytics refine this:
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Light duty (<150 starts/day, office): 18 years
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Standard duty (150–400 starts, residential): 15 years
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Heavy duty (>400 starts, hospital, mall): 12 years
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High ambient (>45 °C, rooftop MRL): 10 years – capacitor life halves every 10 °C rise.
Replace immediately if:
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STATUS LED red steady – IGBT desaturation or over-temperature
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Brake coil current >4 A – shorted winding or failing IGBT
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Heat-sink temperature >80 °C – fan bearing failure
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Shoe-wear sensor open circuit – resistor cracked by vibration
7. Eco-disposal & warranty
Return the old board in the recycling box; Nanjing Zhuye recovers aluminium, copper and gold and issues a €30 recycling credit. Every KM954425G01 ships with a 24-month replacement warranty, extendable to 60 months when you join our annual capacitor-replacement program.
8. Why buy from Nanjing Zhuye Elevator Parts
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250 units in stock, Rotterdam & Nanjing, flashed with latest firmware
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Factory-sealed KONE packaging with hologram and calibration sheet – no grey-market clones
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QR code on nameplate links to wiring diagram and 5-minute calibration video
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24/7 technical hotline staffed by ex-KONE brake specialists
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Bundle pricing: buy 2 boards and get a free heat-sink cleaning kit plus freight credit
9. Bottom line
A failing brake board is the fastest way to a trapped-passenger call. Keep a genuine KM954425G01 on standby, swap it in 45 minutes, and your elevators will stop smoothly and safely for the full 15-year design life. Order today from Nanjing Zhuye Elevator Parts – the fastest route from “brake fault” to “perfect stop.”
