Wow, thanks for your comment :) Most of these videos are unplanned, so I have to think about what to film when i'm there, but I try to think "outside the box" and get some interesting stuff! I wasn't going to film this Hydraulic lift at all, but when the control box cover was removed then I changed my mind!
I miss the hydraulic lifts that got replaced by GeN2's at our apartments. They pre-doored and I loved the 50Hz grunt of the pump, couldn't believe they were 75kW rated though, no wonder the fluoros in the car and shaft would dip when they changed from star to delta and sent all oil to the ram.
Anna Powell, lol. it’s actually three because of the lights. One of them turned off if the lights are on, if the light is off then two relays turn off. if the light is turned on then two relays turn on. if the lights are turn off then one relay is on.
Challenge: Make your own elevator controller using just relays and also try adding an animated up arrow(either pulsing an up arrow, just on off on off on off or actually making it like the new elevators do it but still try with relays)
I got a few things. There is a star delta starting circuit. The two timers, set at 2 seconds and 4 seconds respectively, delay the starting of the motor and switch the windings from star to delta. There is a two second delay to start in star, and then more four seconds to delta and to open the valves to the ram. I assume that when in star position, the oil circulates freely in a closed loop. Furthermore, I assume that the slow speed when going up happens when some oil is allowed to divert back to the cistern instead of going into the ram, reducing flow. When going down, I assume there are two valves, one for slow speed and one for full speed (probably the slow speed one is the same one that allows the oil to divert when slowing while going up). Am I correct in my assumptions?
I'm just wondering: is a "lift" (I'm in the US, we call them elevators) that has a moter room on the lowest floor a hydraulic lift? ( I can hear them running) also they both (I think) are Otis elevators
ok sorry the 2 i know of are NOT both Otis elevators: one is a Dover and the other is most likely a Otis (there is also another one in the building that is not the second but im guessing it's a dover also. These 2 i am 100% sure do NOT go above the roof of the building. not sure about the other one :0 )
What I noticed in this video, is that when you turn the knob on the door it trips a relay. I guess the door interlock is somehow connected with the locking bars. From what I know about the different types of interlocks, this one mechanically blocks the knob. Most doors like this have two safety contacts, one for the door itself, but also one inside the lock. Maybe they combined the two switches into one.
Truly an AWESOME video. I too noticed the red button that tripped on the MG-8 device. It was interesting to watch it move as the hydraulic pump was prepping to start. I wonder what that button technically does? Once again outstanding job on this video!!!!!
Thanks! I was supposed to film all the relays including the U/D contactors, but unfortunately I moved the camera and didn't realise one was out of view. Would have liked to refilm the whole sequence to show both of them, but this site I may not go to again so too late! When that relay switches off, the lift starts moving so maybe it is prepping the pump or hydraulic lines or something.
I love the sounds of the relays. it sounds awesome.a thing I always wondered is, why does it hum on the way down andnot on the way up, I hope that makes sence.
There is a pump working to pump the hydraulic fluid into the piston that lifts the car, when it is going up. On the way down, the piston and car drop by gravity, forcing the hydraulic fluid back into the reservoir.
Central Processor Unit - It depends if you interpret 'relays switching voltages into circuits' as being classed as "Processing", but I suppose it is. I mean, a computer is doing the same just with millions of transistors instead. In this video, I would refer to it as a controller rather than a CPU.
Chad robinson Perhaps because we understand them more. In some of my previous videos I did exactly that, because there are enough moving parts to be able to figure out what-does-what. With CPU cards the only thing to see are resistors and chips which are not very interesting to watch, except if there are some LEDs and an LCD screen - which is still not as interesting as watching a whole controller cabinet come alive with relays clicking all over the place. My favourite lift room item has to be the floor selector - otis carriage and the Schindler wheel being my favs! What's your favourite?
Mine would probably be the floor selector as well. Just the way it manages to maintain the selected floors (via the panel inside the lift) and finds the most-significant floor (closest) to go to first. Especially if you select *ALL* the floors!
Not sure where the floor selector is on this one. As there are no cables in a hydraulic lift that enter the motor room, it's difficult to drive a conventional type. So I guess it's a tape head but more likely on this one roller switches.
Ethan I'm not sure, but depends which relays you are refering to. The smaller ones are probably powered (the electro magnet/coil) by either 24v or 110v and can switch medium currents - no good for motors. The high power ones are probably switched by the smaller ones (small relay fires big relay) - these switch currents to the hydraulic pumps and door motors which are obviously much larger currents, but unfortunately I don't have any further details on how much current, etc
On a traction I would say definitely yes (when you are using the old fashioned system), but on a Hydraulic you are running a pump. I know a pump is a motor, but not sure whether this uses Star-Delta? The purpose of Star Delta is so that the STAR gives the boost to get the motor running (Delta alone could cause the motor to stall), but the DELTA is more efficient when running the motor after it's started. Not sure if a pump uses this or not? (I don't know for sure)
Star-delta connection, because it would take too much power delta, the engine is started. Right when the motor is stopped, the rotor does not induce voltage in the stator, so that the amount of power supply voltage, and provide the small stator resistance ratio. This is a huge power startup. Therefore, in star linked with lower performance in the engine. Then you have reached a certain turning point, there are converted into Delta. If you let Star of the engine, it operates only minor performance and takes up a third of the size of the torque becomes.
You start with a hydraulic lift can be: Direct, star-delta, Or soft-starter. For a starting star-delta must choose the right timing! The timer function is to determine both the motor acceleration time that the transition time from star to delta.
It is a star-delta motor. The right contactor is the star point (3 jumped leads at the top.) When the lift starts raising, you see it pull in for a few seconds then drop out.
l1ft Agreed! I love going abroad for work AND to find lifts that you wouldn't find in England. My favourite place was that hotel in Saudi Arabia with the Old Schindler motor room at the top of that creepy stairwell - that was epic! Not much chance of going back there again though
gutteboy But if you don´t have enough volts you don´t have enough amps. It´s the current flow through your body not the current avaible at your source.
True to a degree, although the damage that 24Vac does compared to 415Vac is incomprehensible. The higher the voltage, the easier and greater the current will flow. And 30mA is enough to fibrillate the heart. Pretty nasty! So, if you didnt have the voltage, you wouldnt have the potential current flow. On a different note, good video! Not seen anything that lively for a fair time, other than some old switchgear!
gutteboy LOL! The whole point of the warning is a disclaimer - If someone watches my video then copied me but touched something and died, then I can say "I warned you, so I am not to blame". Definition of Voltage is the PUSH/SPEED of electrons. Definition of Amps is the AMOUNT of electrons. To the inexperienced, if you look at this controller you do not know which is 24v, 100v, 240v or 415v... some are harmless, some you will feel but not injure you, some will give you an electric shock and possibly not kill you, whilst 415v is probably going to kill you. But - WHATEVER, just don't touch anything is easier to explain and covers everything!
dear God! somebody adjust the valve right! I bet it won't lift full load. Full load will put the car on the buffer before it takes off...transition way....too slow
![เปิดคำทำนาย นอสตราดามุส - บาบา วานก้า ปี 2025 คนทั่วโลกต้องเจออะไรบ้าง? | แฉ 11 ธ.ค. 67 [2/3] |GMM25](http://i.ytimg.com/vi/xmTIKWJUMPM/mqdefault.jpg)
That motor is music to my ears. And I love relay logic.
Love these old relay videos. Nothing like the click of a electro mechanical logic circuit
Very good video. I really appreciate the technical part included into your video's. Making them the best lift video's currently on TH-cam.
Wow, thanks for your comment :) Most of these videos are unplanned, so I have to think about what to film when i'm there, but I try to think "outside the box" and get some interesting stuff! I wasn't going to film this Hydraulic lift at all, but when the control box cover was removed then I changed my mind!
I miss the hydraulic lifts that got replaced by GeN2's at our apartments. They pre-doored and I loved the 50Hz grunt of the pump, couldn't believe they were 75kW rated though, no wonder the fluoros in the car and shaft would dip when they changed from star to delta and sent all oil to the ram.
What was their weight capacity?
@@samuellourenco1050 can't remember, likely only a tonne
Good vid. Looks like they have someone who comes regularly to dust and polish that top row of relays, wish I could make my silverware gleam like that!
Looks like the maintenance team has a passion for the job they do :)
1:42 them 2 relays are going mad
lol yeah, it sound like u could make abeat with those sounds lol
Anna Powell, lol. it’s actually three because of the lights. One of them turned off if the lights are on, if the light is off then two relays turn off. if the light is turned on then two relays turn on. if the lights are turn off then one relay is on.
Challenge:
Make your own elevator controller using just relays and also try adding an animated up arrow(either pulsing an up arrow, just on off on off on off or actually making it like the new elevators do it but still try with relays)
Back when I was a kid, plenty of time to do exactly that. Nowadays, no time! ;)
You had me freaking out at the end!! So much close up on live circuitry... :S
;)
I like the sound of the elevator when it goes up.
It’s called a epic motor!
@@qeelevators2960 definitely!
AMAZING video! Could you also upload these takes separately later?
ah sorry! This was 7-8 years ago now, so the footage is long gone!
@@mrmattandmrchay pity 👎
I got a few things. There is a star delta starting circuit. The two timers, set at 2 seconds and 4 seconds respectively, delay the starting of the motor and switch the windings from star to delta. There is a two second delay to start in star, and then more four seconds to delta and to open the valves to the ram. I assume that when in star position, the oil circulates freely in a closed loop.
Furthermore, I assume that the slow speed when going up happens when some oil is allowed to divert back to the cistern instead of going into the ram, reducing flow. When going down, I assume there are two valves, one for slow speed and one for full speed (probably the slow speed one is the same one that allows the oil to divert when slowing while going up). Am I correct in my assumptions?
2:18 my fridge at 2 am
Great video. Well done.
Thanks :)
I'm just wondering: is a "lift" (I'm in the US, we call them elevators) that has a moter room on the lowest floor a hydraulic lift? ( I can hear them running) also they both (I think) are Otis elevators
ok sorry the 2 i know of are NOT both Otis elevators: one is a Dover and the other is most likely a Otis (there is also another one in the building that is not the second but im guessing it's a dover also. These 2 i am 100% sure do NOT go above the roof of the building. not sure about the other one :0 )
What I noticed in this video, is that when you turn the knob on the door it trips a relay. I guess the door interlock is somehow connected with the locking bars. From what I know about the different types of interlocks, this one mechanically blocks the knob. Most doors like this have two safety contacts, one for the door itself, but also one inside the lock. Maybe they combined the two switches into one.
Next time I'm back there (that's assuming that I 'do' go back there?) I'll have a good :)
Truly an AWESOME video. I too noticed the red button that tripped on the MG-8 device. It was interesting to watch it move as the hydraulic pump was prepping to start. I wonder what that button technically does? Once again outstanding job on this video!!!!!
Thanks! I was supposed to film all the relays including the U/D contactors, but unfortunately I moved the camera and didn't realise one was out of view. Would have liked to refilm the whole sequence to show both of them, but this site I may not go to again so too late!
When that relay switches off, the lift starts moving so maybe it is prepping the pump or hydraulic lines or something.
I love the sounds of the relays. it sounds awesome.a thing I always wondered is, why does it hum on the way down andnot on the way up, I hope that makes sence.
There is a pump working to pump the hydraulic fluid into the piston that lifts the car, when it is going up. On the way down, the piston and car drop by gravity, forcing the hydraulic fluid back into the reservoir.
great relay action. two boxes each have a red button/light. what are they?
I never seen a gaint contactors like this before 🤔
So would this system (all the wiring) technically be considered the "CPU" of the lift?
Central Processor Unit - It depends if you interpret 'relays switching voltages into circuits' as being classed as "Processing", but I suppose it is. I mean, a computer is doing the same just with millions of transistors instead. In this video, I would refer to it as a controller rather than a CPU.
yeah, that sounds about right.
I love relays for some reason...
And floppy drives...
And old hardware....
Why?!
Chad robinson Perhaps because we understand them more. In some of my previous videos I did exactly that, because there are enough moving parts to be able to figure out what-does-what. With CPU cards the only thing to see are resistors and chips which are not very interesting to watch, except if there are some LEDs and an LCD screen - which is still not as interesting as watching a whole controller cabinet come alive with relays clicking all over the place. My favourite lift room item has to be the floor selector - otis carriage and the Schindler wheel being my favs!
What's your favourite?
Mine would probably be the floor selector as well. Just the way it manages to maintain the selected floors (via the panel inside the lift) and finds the most-significant floor (closest) to go to first.
Especially if you select *ALL* the floors!
Funny that the relay work when you lock and unlock the door
At 3:44 you select the floor and the relays react, and there's a small delay before the lift starts moving. Very curious as to why this is the case.
A characteristic of a hydraulic lift going up. To be perfectly honest, I'm not sure why (never thought of it before!). I'll get the answer though...
Most likely an unloader valve to ease starting of the hydraulic pump, which is dropped off to allow full fluid flow to the cylinder moving the lift
Must be a floor selector like thing that detects floor position
Not sure where the floor selector is on this one. As there are no cables in a hydraulic lift that enter the motor room, it's difficult to drive a conventional type. So I guess it's a tape head but more likely on this one roller switches.
I am searching for old relay type schematic diagram
Service manuals
This sounds better than my dad‘s car engine
Epic motor!!!!
What would be the rated voltage on one of those relays? If you happen to know.
Ethan I'm not sure, but depends which relays you are refering to. The smaller ones are probably powered (the electro magnet/coil) by either 24v or 110v and can switch medium currents - no good for motors. The high power ones are probably switched by the smaller ones (small relay fires big relay) - these switch currents to the hydraulic pumps and door motors which are obviously much larger currents, but unfortunately I don't have any further details on how much current, etc
Star-delta starting
On a traction I would say definitely yes (when you are using the old fashioned system), but on a Hydraulic you are running a pump. I know a pump is a motor, but not sure whether this uses Star-Delta? The purpose of Star Delta is so that the STAR gives the boost to get the motor running (Delta alone could cause the motor to stall), but the DELTA is more efficient when running the motor after it's started. Not sure if a pump uses this or not? (I don't know for sure)
Star-delta connection, because it would take too much power delta, the engine is started. Right when the motor is stopped, the rotor does not induce voltage in the stator, so that the amount of power supply voltage, and provide the small stator resistance ratio. This is a huge power startup. Therefore, in star linked with lower performance in the engine. Then you have reached a certain turning point, there are converted into Delta. If you let Star of the engine, it operates only minor performance and takes up a third of the size of the torque becomes.
+Guerrini Daniele cool excellent description. So do you think a hydraulic pump also uses star delta?
You start with a hydraulic lift can be: Direct, star-delta, Or soft-starter.
For a starting star-delta must choose the right timing!
The timer function is to determine both the motor acceleration time that the transition time from star to delta.
It is a star-delta motor. The right contactor is the star point (3 jumped leads at the top.) When the lift starts raising, you see it pull in for a few seconds then drop out.
the old schindler is collbrated with indian manufacturers ece elevators
What country is this in???
Switzerland
Ah right! They wouldn't allow a lift like that in England lol!
l1ft Agreed! I love going abroad for work AND to find lifts that you wouldn't find in England. My favourite place was that hotel in Saudi Arabia with the Old Schindler motor room at the top of that creepy stairwell - that was epic! Not much chance of going back there again though
It was epic! I know where there's an old Evans lift which is going to be demolished soon.
l1ft Cool - are you going to visit it and is it already on youtube?
cool hydraulic lift
Matt........ its not the volts that kill you.. its the amps
Good video as always thought :D
gutteboy But if you don´t have enough volts you don´t have enough amps.
It´s the current flow through your body not the current avaible at your source.
True to a degree, although the damage that 24Vac does compared to 415Vac is incomprehensible. The higher the voltage, the easier and greater the current will flow. And 30mA is enough to fibrillate the heart. Pretty nasty! So, if you didnt have the voltage, you wouldnt have the potential current flow.
On a different note, good video! Not seen anything that lively for a fair time, other than some old switchgear!
ok, guys, i give up here!!!! :O
gutteboy LOL! The whole point of the warning is a disclaimer - If someone watches my video then copied me but touched something and died, then I can say "I warned you, so I am not to blame". Definition of Voltage is the PUSH/SPEED of electrons. Definition of Amps is the AMOUNT of electrons. To the inexperienced, if you look at this controller you do not know which is 24v, 100v, 240v or 415v... some are harmless, some you will feel but not injure you, some will give you an electric shock and possibly not kill you, whilst 415v is probably going to kill you. But - WHATEVER, just don't touch anything is easier to explain and covers everything!
Dry power hydraulic.
dear God! somebody adjust the valve right! I bet it won't lift full load. Full load will put the car on the buffer before it takes off...transition way....too slow
I Speak German