Kone KCM831 Shaft Comm Not OK

Guest · 2024-12-11T22:32:00Z

The building for this job had a major power failure from a windstorm and had no power for 4 days. Cartop battery was dead. Once power came back on the elevator will run on inspection, relevel at the floors but it will not take take calls from the car, hall, or controller. The Shaft Comm OK light is NOT on. We are getting the expected "14xx" fault codes but no other code. All of the FCB boards have the green Led and no fault lights. We unplugged the Hall CANBUS cable and got the expected fault code. Made sure the roll call was in the right direction. Several LON downloads to make sure. Position indicator works fine in the car. This job does not have a hall PI. Not sure what the difference between a 5-7-1 and 5-7-2 Lon download is but only performed a 5-7-1 Lon download. Checked all the cables between the FCBs. I believe we turned off the battery monitoring for now. Anyone have any other ideas or something we may have missed?

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Char Les

(@Char Les)

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Topic starter 05/03/2025 1:07 pm

For some reason the shaft setup won't start. Drove the car down to the
lowest landing. 61U, 77N, 77S, 30, are lit. 5-2 set to 1, turned RDF to norm but car just re-levels and stops. What are we missing? Normally you would see the dashes and the car moved up the hoistway.

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Char Les

(@Char Les)

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Topic starter 06/03/2025 3:02 am

When we checked 4-1 it comes back as 4-1-10 OSS. Wońt go into normal. Is there a “floor table” that has to be set / reset

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Char Les

(@Char Les)

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Topic starter 08/03/2025 1:53 pm

After replacing the dallas chip, programming the parameters again, it took a dozen tries to get the shaft learn to finally take and the shaft communication finally came on line Thanks for everyone who helped.

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Vadim

(@Vadim)

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16/03/2025 3:16 pm

I have many Kone monospace elevators with LCECPUnc. This problem comes after 10-14 years up. The battery inside the NVRAM dies and NVRAM loses all parameters after turning off the power of an elevator. Chaft Comm led is one of the symptoms.

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