DMC Hydro needs reprogramming every power outage

greenspun.com : LUSENET : Elevator Problem Discussion : One Thread

Thank you for all your responses, but there is a brand new ram battery on CLC board and the thing still needs reprogramming with the fast tool after every power outage.

-- Renee Neal (rneal@tellurian.com), November 16, 2004

Answers

make sure you have good spring pressure on the new battery ... i have seen this be a problem after changing a battery

-- Bill (v8tor@hotmail.com), November 16, 2004.

Hey Renee, what do you mean by re-programming? I had one that after a power outage I would have to run a floor table. never had to do anything else but a floor table and that would last until the next outage.

-- Pauly (escalator@earthlink.net), November 16, 2004.

Assuming that the battery is good... With power to the elevator turned off put a meter across pin 14 and 28 of M0(U30) which is your RAM chip. Pin 14 is ground and 28 is Vcc. Your should measure 3VDC. If you don't measure anything then you need to look for a problem with the battery holder or a broken trace on the board somewhere between the holder and the RAM chip. If you do measure 3VDC then you should have your board tested and repaired because there is probably something wrong with your RAM chip. If you have any more questions feel free to contact me.

-- Andy (aenglehart@world-electronics.com), November 17, 2004.

Put a Computer UPS betweens mains and your controler, this should fix most of the power failures, cost less then 200,=

-- Marcel (ncc1502@yahoo.co.uk), November 18, 2004.

Bill if you know the answer why don't you tell. I thought that's whjy we came here to help. Why would you be on the board just to harass those of us that try and help.

-- joe (whobwho@yahoo.com), November 18, 2004.


Will just email me privately I can get you Schindler info. Can't we all just get along? he he he

-- joe (whobwho@yahoo.com), November 19, 2004.

Hey Will so does that mean your not going to help the person here? You have the answer but you won't share it? I don't understand your explanation why.

-- joe (whobwho@yahoo.com), November 20, 2004.

Are you saving your adjustments? If you don't save them, they go back to default when power is removed.

-- WEB (321web@cox.net), November 20, 2004.

response to dmc

there is a transistor that turns the battery on follow the traces and check the transistor it is probably bad. had this many times b4 when an inexperienced mecahnic changed the battery with a metal screwdriver. it shorts the trasistor out and blows it. easy check and replacement if u have a tech backround

-- dont think so (nowayurgettingmyemail@yahoo.com), February 14, 2005.

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