Home Forums General Discussion Technical Questions movement indicator in manual resque operation mrl

Goodmorning to all.I have a elevator without machineroom and i want to know the direction of the campine at manual resque operation with a lighting indicator because i dont have access to the shaft.Have anyone any suggestions or any shematic to help me.Thanks.

Hi
If you move the lift manually, not seeing the situation at cabin doors and shaft, you may kill someone. Get the resque instruction from the manufacturer of the lift.
-pk-

Hello
who's the manufacturer

My dear friend i know very well the situations that will be in a lift and specially in manual resque operation so i made simple controller that supervise the safety chain during resque and the only thing that i having problem is how can i detect the cabin movement without to look inside the shaft this is an alternate way to watch from distance and it is very common in mrl elevators

Hello
may I ask, who is the manufacturer is

Yes my friend the manufacture is STHAL

Excuse this stupid question, but is there a screne showing encoder feedback

I am sorry i forgot to say that i a have an elevator without machine room but the motor is not a pm motor and there is not encoder on the motor it is a openloop although the motor is inside the shaft

I hate MRL's. Dose this system stop when it sees a door zone or are you on your own for that as well.
On another note it won't matter much when your dealing with a balanced load in a shere wall.
Been there done that.

I have the same opinion about mrls .No i fix the system to stop at the floor and i made a delay for the brake to close every 10 sec but my problem is the direction indicator have you something to inform me?

I'm sorry, I'm not helping much, but sounds like a 2 person job as there seems to be nothing to I can think of at this moment.

Anyway nice to chat with you

Sorry but if you can't figure out a way to know if an elevator is going up or down (MRL or not), I don't think you should be working on elevators - much less rescuing someone.... Just my humble opinion.

I'll have to agree with E-man... Sounds like what you're "designing" should be developed by a professional engineer...

Thank you e-man and edman for your opinions.

Simplest solution use a camera located on the car or in the shaft, with small screen in the controller,

I've seen some jobs where the Inspector required a camera located in the hoistway showing the governor sheave. IMO, you need to be able to see the drive sheave also.

At first thanks for the answers that you gave me.At second the problem is.I have an elevator without machine room.T motor is not PM so i dont have encoder.The tuv austria ask for a remote control to do the resque movement manualy[opening the brake only at this case] with an external power i used ups 2000VA.I dont have direct access with the control panel the motor or the shaft the minimum distance is 5 meters and also this movement will be act in power failure.So i was thinking something like magnetic sensors in the shaft they they will drive relays and i will have light indicators in the portable rescue unit direction up or down so i am looking a simple way with minimum power requirements.

Vaggelis,
Welcome!
I love engineering challenges! I love designing, thinking, researching, creating, developing, etc. It's great fun.

However, in the USA, if you personally modify a UL rated controller, (or even add anything to it), this opens up a "can of worms", and exposes yourself to liability in a lawsuit, if someone were to ever get hurt. The reason for the failure doesn't even have to be related to what work you did! The plaintiff's lawyer only has to raise doubt in the mind of the jury, to be awarded a judgement, and get a big settlement. I'm not sure about the legal climate in �sterreich, but that's the way things are here. If we want the equipment modified, we have to go through the original equipment manufacturer, and have them perform the engineering. Even if they do exactly the same circuit design that we would do, it has to be done through them to maintain the UL rating, and protect ourselves from liability.

Therefore, when you talk to anyone from the USA about such issues, you will receive less than enthusiastic responses. I just wanted you to know why that is the case.

I am not familir with STHAL equipment at all. Is the hoist motor a 3 phase ac motor? Does it produce any voltage when it's being rotated or overhauled by a load, such as during empty car up? If so, then you could hang a phase monitor on the motor leads.

Like this-
http://www.transcat.com/PDF/KnoppK3.pdf

Or this-
http://www.transcat.com/PDF/KnoppK3.pdf

Check with Sthal, check with your insurance company, check with a lawyer-

But above all, be safe!

VIC thanks for your help.