KONE MX Encoder KM950278G01 KM950278G02

KONE KM950278G01 and KM950278G02 are rotary encoders used in compatible KONE MX elevator machine and drive systems.

The encoder provides motor speed and position feedback to the elevator drive. It is commonly supplied with a friction wheel that remains in contact with the rotating surface of the traction machine. Stable wheel contact and correct encoder alignment are important for reliable feedback.

KONE officially identifies KM950278G02 as an MX encoder with a 37.3 mm reference diameter and a 7000 mm cable. KM950278G01 is commonly supplied as the related version with a shorter cable, frequently listed at approximately 4500 mm.

Check the Cable and Wheel Together

The difference between G01 and G02 should not be judged only from the encoder housing. Before ordering, buyers should confirm:

• KM950278G01 or KM950278G02 label

• complete encoder manufacturer label

• cable length

• connector type and pin arrangement

• friction-wheel diameter

• wheel surface condition

• mounting bracket and fixing holes

• traction machine model

• inverter or drive information

• installed-position photo

• quantity required

Public replacement references commonly associate these encoders with KONE MX gearless machines and KDL16L-related applications, but the actual machine and drive configuration should be confirmed from the elevator site.

Replacement may be considered when the elevator has unstable speed feedback, encoder-related drive faults, intermittent signals, excessive encoder noise, damaged cables, or a worn friction wheel. However, technicians should also inspect the wheel pressure, shaft alignment, mounting bracket, connector, grounding, and feedback wiring before replacing the complete encoder.

For buyers in Saudi Arabia, Jordan, Egypt, Iraq, UAE, Kuwait, Brazil, Chile, Spain, and Italy, clear photos of the encoder label, connector, friction wheel, and traction machine nameplate are recommended before shipment.

FAQ

What is the main difference between KM950278G01 and KM950278G02?

The most commonly documented difference is the cable length. G01 is frequently listed with an approximately 4500 mm cable, while KONE officially identifies G02 with a 7000 mm cable. Other installation details should also be checked.

Can G01 replace G02 directly?

Not automatically. The cable length, connector, friction wheel, mounting position, machine model, and drive configuration should be confirmed first.

Is this the same as a tachogenerator?

No. This product is a rotary encoder used for digital speed and position feedback. A traditional tachogenerator produces an analogue electrical output and should not be assumed to be interchangeable.

Should the rubber wheel be checked separately?

Yes. A worn, hardened, cracked, or slipping wheel can cause unstable feedback even when the encoder itself is still functional.