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The Projects Forum Working on an electronics project and would like some suggestions, help or critiques? If you would like to comment or assist others with their projects, this is the place to do it.

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  #1  
Old 02-26-2010, 08:24 PM
yasirsajjad yasirsajjad is offline
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Red face Passenger Lift Control Diagram

Hi
Can any body mail me Passenger Lift control diagram (electrical relay logic)

i will be highly thankful

Regards

Yasir Sajjad
<snip>

Last edited by bertus; 02-26-2010 at 08:57 PM. Reason: Removed email address to protect you from spambots
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Old 02-26-2010, 11:52 PM
andreapg andreapg is offline
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Hi,
In the following pdf link (last page) you can find a circuit schematic which works for a 4 floors elevator, with manual doors. I'll try to explain you how it works(can't speek english very well).
Between T1 and T4 (bold line) you can see the main safety switches:
over run switches (they turn off the equipment if a motor brake failure occurs);
floor door switch;
safety speed limit control (to prevent crashes);
stop button/car door safety switch.
In the second (schematic) page, on the left you will see the drivig buttons:
P1-P2-P3-P4 are floor buttons; C1-C2-C3-C4 are car buttons.
RO delay allows the floor buttons (NT on Otis panels).
S1-S2-S3-S4 are mechanical exchange switches which are located in the shaft, on each floor. They reverse the car run, and they are turned through a shape installed on the car (look for "invertitore" and "sagoma").
D= down power relay
S= up power relay
GV= high speed power relay
PV= low speed power relay
RV= select car speed
IF= stop proximity magnetic switch (it opens the circuit once the car is on the floor).
When the car comes near the reserved floor, the related switch (S1-S2-S3-S4) takes the middle position: S or D keeps the high level through its 12-8 switch, but RV turns off. Than we have the speed exchange.
http://electronline.it/doc/asc.pdf
That schematic was designed with educational intent, than it is on the public domain.

Last edited by andreapg; 04-14-2010 at 09:25 PM.
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Old 04-14-2010, 09:29 PM
andreapg andreapg is offline
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Uploaded the same schematic as a file attachment
Attached Files
File Type: pdf asc.pdf (118.5 KB, 376 views)
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