OTIS MRVFgreenspun.com : LUSENET : Elevator Problem Discussion : One Thread
HAVE A 3 CAR GROUP, 2 OF THE 3 HAVE BEEN INVOLVED IN INCIDENTS WHERE THE PASSENGERS GET ON AT THE TOP (8) FLOOR OR 5TH FLOOR, PRESS LOBBY AND THEN THE CAR PROCEEDS TO THE PIT USUALLY STOPPING ON THE NORMAL BUT IN TWO CASES GOING 18-24 INCHES BELOW BOTTOM FLOOR. WILL APPRECIATE ANY IMPUT IF YOU HAVE HAD SAME PROBLEM ALSO NEED A CLEAN PRINT.
-- PAT CARRAJAT (PATRICK.PARTSMAN@MCI2000.COM), May 13, 1997
Do you have the up dated solid state steppers on the units. Sounds like your going out of step. Block the doors out knock the selector back and see if the car recovers on bottom floor on the terminal slowdown .Also is the lobby the bottom floor. I take it it happens once in awhile and not when your there.
-- SMG (Manupdown@aol), May 13, 1997.
Sounds like the toys I buy my grandkids, "batteries not included" nor do the toys outlast the batteries after I buy them.
Now, has the system been subjected to the Surge Withstand Capability Test? Most are not.
ANSI/IEEE Standard C37.90.1-1989
The Westinghouse ERL has a tendancy to do the same as your MRVF job is doing.
Also we have found that the Armor/Kone TMS 900 does the same at full speed when the selector decides to do the proverbial.
All of these problems are no doubt Agatha's fault because she plugged in her iron.
-- Vernon P. Keller (firstname.lastname@example.org), July 16, 1997.
Sounds like the stepper is out in the down direction only. Check the stepping circuitry on the initial reversal. Also, better reset your bottom slowdowns.
-- Ken Fulkerson (Elevator@InReach.com), March 05, 2001.
Sounds like you need me to come fix your problem.I have 15 of those u.s designed units..no calls for 3years now..first thing is its almost impossilbe to run 20 or so inches past the botton landing.secondly the directional is set and inche and a half beyond floor level... acouple things that make these units run well tape kinds must replaced once a year.omron bificated 48 volt relays every two years..bdc contact checked regular.
-- Dan W (email@example.com), March 07, 2003.