Elevator Forum

I'd hang a scope on the gen field, look for a disproportionate anomaly or gap in the S-curve. Try to identify the slowdown switch/relay sequence, find...

Nice video! Very bright sound, clean and happy sounding. Not exactly my favorite genre, but still a stellar performance, very accurate, no duff notes ...

selfproclaimed- Thanks for the safety reminder.The only Kone PMSMs I've worked on is the MX20. At least on the vintage I have, both the e-brake and ma...

iuec4me,Were you able to identify the leveling switches, that weaken the generator field when in leveling?

I havent had any brake ps failures yet.But I wonder why the lack of brake switch actuation didn't fault out the control, and prevent brake slippage an...

Is this the vintage with the selector clutches, chains, etc? What a monstrosity.I'd compare the generator field voltage, loop volts, and motor field v...

Relay logic Serge?

You gotta pick the brake, and slide about a .003" feeler gauge in between the brake drum and shoe, all around at every point. Best to get really long ...

Being self-employed, I get each and every single t/c, wakes me up many nights. I used to be the only one on call for like 10 years continuous, weekend...

I've seen the governor encoder coupling slip on a Miprom 21. The style of coupling they used made that easily possible. I think it had a tiny allen he...

For the brake shoes? Or the brake power supplies? (I've heard "braking unit" applied to both things)

Ray, try posting your question on the Elevator Shack forum. There are a lot (mostly?) Europeans on that site. Another great resource.

Hey, Ray...What's an "IGV"? European, Asian, or?

The com boards in the cop have a little red light on them, that lites when it goes bad. Happens right after warranty expiration.

I wonder if it performs a rescue routine, when it loses communication between the selector and CLC? If so, you might interrupt the serial link to forc...