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#5848 - 02/13/13 03:44 PM Re: Dover composite [Re: uppo72]  
Joined: Jan 2012
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Broke_Sheave Offline
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Unsure of your question Uppo?

A and B base refer to dispatching schemes. They are basicall identical, except A base was used mostly on touch button systems, and had multiple diagnostic cards you could plug into the card rack, and B Base was used with regular push buttons, and had one diagnostic board.

Both were based on VIP 260 logic, but transferred from relay form to DTL logic. (DTL = Diode Transistor Logic)

And to confuse things more, there was a CB base. Basically a B base dispatcher, but additonal boards that read flags in the hatch for Selector functions. Basically the 1st Otis that I'm aware of that did not have a mechanical selector.


It Don't mean a thing if it aint got that swing.

Cool, Free, Johnny Smith courtesy of NPR..HERE
http://www.npr.org/ramfiles/asc/asc25.smith.asx
#5849 - 02/13/13 04:32 PM Re: Dover composite [Re: uppo72]  
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Oleeightball Offline
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Southeast
Also check for bent connectors on IBM relay bases as well. I have had those whip my butt on occasion. Peace.

#5853 - 02/13/13 11:35 PM Re: Dover composite [Re: Broke_Sheave]  
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uppo72 Offline
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Originally Posted By: Broke_Sheave
Unsure of your question Uppo?

A and B base refer to dispatching schemes. They are basicall identical, except A base was used mostly on touch button systems, and had multiple diagnostic cards you could plug into the card rack, and B Base was used with regular push buttons, and had one diagnostic board.

Both were based on VIP 260 logic, but transferred from relay form to DTL logic. (DTL = Diode Transistor Logic)

And to confuse things more, there was a CB base. Basically a B base dispatcher, but additonal boards that read flags in the hatch for Selector functions. Basically the 1st Otis that I'm aware of that did not have a mechanical selector.


Thanks broke i think you answered my question. I've worked on the touchbutton control(nightmares they are) feeding multiple cards on the lift no1 selector. I'm pretty sure this was the only high rise type here, with normal button style button types used with a geared machine and selector version for small applications. The next generation of otis lifts were the 401's and no cb base types. I've just read over the time posters stating a or b base and not really sure what they were referring to. Thanks mate.

#5854 - 02/14/13 02:20 AM Re: Dover composite [Re: uppo72]  
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Broke_Sheave Offline
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Ah....Touch Buttons and Balanced Bridge detectors...The good old days.. grin

One of my first few days on the job, 35 years ago, my boss tells me..

"That tenite cover is loose over the door detector. Reach in behind it and tighten it up"..

Let's just say that 1000 cycle wouldn't kill you but it would make you hurt yourself trying to get away from you.. grin

Of course he thought it was hilarious. Different times for sure.. cool


It Don't mean a thing if it aint got that swing.

Cool, Free, Johnny Smith courtesy of NPR..HERE
http://www.npr.org/ramfiles/asc/asc25.smith.asx
#5856 - 02/14/13 05:22 AM Re: Dover composite [Re: Broke_Sheave]  
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uppo72 Offline
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Originally Posted By: Broke_Sheave
Ah....Touch Buttons and Balanced Bridge detectors...The good old days.. grin

One of my first few days on the job, 35 years ago, my boss tells me..

"That tenite cover is loose over the door detector. Reach in behind it and tighten it up"..

Let's just say that 1000 cycle wouldn't kill you but it would make you hurt yourself trying to get away from you.. grin

Of course he thought it was hilarious. Different times for sure.. cool


ha i know what you mean. Touch buttons, saturable reactors on the pdo, old lambda with the high frequency were all stuff we, as newish mechanics freshly bought out by Otis all had to learn let alone fricken selectors that our company had p****d off 20 years earlier!

And those old pranksters soon realised not to piss us off as we fight back. smile

#5958 - 02/21/13 06:06 AM Re: Dover composite [Re: uppo72]  
Joined: Feb 2013
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Rmoore Offline
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Rmoore  Offline
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Posts: 4
Sounds like LSP isn't picking and locking out leveling. Look there.


Stay safe.
#5960 - 02/21/13 06:37 AM Re: Dover composite [Re: marbles]  
Joined: Feb 2013
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Rmoore Offline
stranger
Rmoore  Offline
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Sounds like LSP isn't picking and locking out leveling. Look there.


Stay safe.
#8865 - 11/03/13 02:03 PM Re: Dover composite [Re: marbles]  
Joined: Nov 2013
Posts: 23
mjm Offline
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mjm  Offline
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One year later, I hope you found your problem, he-he. But I think as stated, UA and DA are respectively held in by SU and SD contacts I think. So, if SU or SD are dropping out for some reason, that would cause UA or DA to drop out hence allowing CS to come in and the car then relevels. So, check all contacts in the SU and SD circuits. Wish I had some prints. peace-out.

#8878 - 11/05/13 01:47 AM Re: Dover composite [Re: mjm]  
Joined: Apr 2013
Posts: 17
slider Offline
stranger
slider  Offline
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Joined: Apr 2013
Posts: 17
Problem with the Yellow Jacket relays is that the solder connections on the back of the relay can touch the contacts in the wire contact relay base. This can short circuits together not meant to be. I personally have been involved in trouble shooting three such occurances, twice while at Dover and once after leaving. All were documented, the first two bothto Dover and to World and the third to Works and Otis. No once seemed concerned. Best replacement is a new relay from Vertex and they aren't expensive.

#8880 - 11/05/13 02:27 AM Re: Dover composite [Re: uppo72]  
Joined: May 2012
Posts: 194
Len Offline
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Len  Offline
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Posts: 194
.....the Vip260 is also gearless umv control system..had many of those cars in one building...the Test card in the operational controller slot YK..was a worth its weight in gold..

#8881 - 11/05/13 03:56 AM Re: Dover composite [Re: Len]  
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mjm Offline
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mjm  Offline
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And another thing, I'm sorry to read that you young guys haven't learned what us old farts found out a long time ago. Those yellow jacket relays are crap. Just because they have an "led" on the front, everyone thinks they must be great. Well, they're not. Put in the relay that the base was made for guys. And like I said, you have to maintain SU and SD once you pick MO, or you're going to stop and relevel.

Last edited by mjm; 11/05/13 03:57 AM.
#8882 - 11/05/13 05:07 AM Re: Dover composite [Re: mjm]  
Joined: Jun 2013
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Postal Offline
journeyman
Postal  Offline
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Joined: Jun 2013
Posts: 72
^^^^^^^^👍👍👍👍👍👍👍👍👍

#8884 - 11/05/13 11:24 AM Re: Dover composite [Re: Len]  
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uppo72 Offline
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Originally Posted By: Len
.....the Vip260 is also gearless umv control system..had many of those cars in one building...the Test card in the operational controller slot YK..was a worth its weight in gold..


Yeah most of the vip 260's I worked on was gearless at around 30 floors.

#29343 - 05/30/20 04:13 AM Re: Dover composite [Re: aquadag]  
Joined: Apr 2020
Posts: 389
Montana Offline
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Montana  Offline
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Joined: Apr 2020
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Aqua, could you please email me the composite adjusters manual? montanaelevator@gmail.com

Thanks so much,

Montana

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