Control system question

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Control system question #9628 01/25/14 04:01 AM
Joined: Jan 2014 Posts: 1 F fiona_sg Newbie
fiona_sg Newbie F Joined: Jan 2014 Posts: 1	Hi, I am new to the industry so please excuse me if my question is rather silly. I am an environmental engineer and currently doing an energy audit for an existing building. The building manager mentioned some day-to-day issues faced in the building and one of it is regarding the elevators. There are 2 elevators on one end of the building, one serves 13 storeys and one serves 12 storeys. This is because there is a pool on the 13th storey on top of one of the elevators so it couldn't extend to that level. The building manager said that because of the different heights of the elevators they cannot be controlled using the same system. But people tend to press the call button on both elevators and take the fastest one to arrive, so energy is wasted on both elevators working when only one is needed. I was wondering if this is really the case that the elevators cannot share a same control system? Or is there any particular control system that can solve this problem? Thanks in advance! Looking forward to your replies

Re: Control system question fiona_sg #9629 01/25/14 04:06 AM
Joined: Jun 2013 Posts: 72 P Postal journeyman
Postal journeyman P Joined: Jun 2013 Posts: 72	Bullshit They both can be controlled with the same group using swing car function

Re: Control system question Postal #9631 01/25/14 06:59 AM
Joined: Dec 2010 Posts: 639 Likes: 4 Central Utah E elmcannic addict
elmcannic addict E Joined: Dec 2010 Posts: 639 Likes: 4 Central Utah	There are and have been for a while now systems that can dispatch group elevators to the "uneven/odd floors" of any building such as you describe. Actually, with the micro processor based systems of the last 30 years, it's been possible. Any of the major companies can engineer software today to meet your buildings needs exactly. There are also secondary or after market manufacturers who can provide a quality product for any building design. Motion Control Engineering (mceinc.com), Computerized Elevator Control Corp. (swiftcec.com) are two companies worth mentioning. Hope this helps. *Now be sure to suggest to your "client" to upgrade their system even if the payback is 10 to 12 years in energy savings. At least they'll have a system that will perform well for the next 30 years or more.

Re: Control system question elmcannic #9638 01/25/14 07:55 PM
Joined: Sep 2012 Posts: 451 S sbrmilitia addict
sbrmilitia addict S Joined: Sep 2012 Posts: 451	I don't know what type of controls you have. I have couple different rises of 4 elevators, 2 out of the 4 cars only come up to the 10th floor and the other 2 service 2 floors above that. Not that big of a deal. They all run off the same group dispatcher.

Re: Control system question fiona_sg #9640 01/26/14 01:03 AM
Joined: Aug 2011 Posts: 563 U uppo72 addict
uppo72 addict U Joined: Aug 2011 Posts: 563	Originally Posted By: fiona_sg Hi, I am new to the industry so please excuse me if my question is rather silly. I am an environmental engineer and currently doing an energy audit for an existing building. The building manager mentioned some day-to-day issues faced in the building and one of it is regarding the elevators. There are 2 elevators on one end of the building, one serves 13 storeys and one serves 12 storeys. This is because there is a pool on the 13th storey on top of one of the elevators so it couldn't extend to that level. The building manager said that because of the different heights of the elevators they cannot be controlled using the same system. But people tend to press the call button on both elevators and take the fastest one to arrive, so energy is wasted on both elevators working when only one is needed. I was wondering if this is really the case that the elevators cannot share a same control system? Or is there any particular control system that can solve this problem? Thanks in advance! Looking forward to your replies With old relay logic or the newer electronic control anything can be achieved. What you describe is virtually the same as a basement level opening that is only served by 1 lift except your situation is at the top of the building. It appears to me as it was simply easier, or maybe they were lazy, to have 2 separate control systems for these 2 lifts. So the answer is of course you can and there is no reason why if your going to upgrade them that this cant happen.

Re: Control system question uppo72 #9641 01/26/14 09:33 AM
Joined: Nov 2009 Posts: 146 kiwinightstalker mushroom
kiwinightstalker mushroom Joined: Nov 2009 Posts: 146	Originally Posted By: uppo72 Originally Posted By: fiona_sg Hi, I am new to the industry so please excuse me if my question is rather silly. I am an environmental engineer and currently doing an energy audit for an existing building. The building manager mentioned some day-to-day issues faced in the building and one of it is regarding the elevators. There are 2 elevators on one end of the building, one serves 13 storeys and one serves 12 storeys. This is because there is a pool on the 13th storey on top of one of the elevators so it couldn't extend to that level. The building manager said that because of the different heights of the elevators they cannot be controlled using the same system. But people tend to press the call button on both elevators and take the fastest one to arrive, so energy is wasted on both elevators working when only one is needed. I was wondering if this is really the case that the elevators cannot share a same control system? Or is there any particular control system that can solve this problem? Thanks in advance! Looking forward to your replies With old relay logic or the newer electronic control anything can be achieved. What you describe is virtually the same as a basement level opening that is only served by 1 lift except your situation is at the top of the building. It appears to me as it was simply easier, or maybe they were lazy, to have 2 separate control systems for these 2 lifts. So the answer is of course you can and there is no reason why if your going to upgrade them that this cant happen. I think lazy is the word....you could do this almost from the invention of the elevator so me thinks the company involved either is incompetent or just in it for a laugh!! I used to be indecisive....now i"m not so sure

Re: Control system question kiwinightstalker #10356 04/12/14 03:55 AM
Joined: Apr 2014 Posts: 18 S swift5000expert stranger
swift5000expert stranger S Joined: Apr 2014 Posts: 18	It will require some engineering but a lot of options exist. The easyest would be a plc(programmable logic controler). But relay logic or a microprocessor overlay could be used to make the elevators share the traffic load.

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