Traction Elevators

[steve66]

What differences is everyone seeing for traction elevators compared to a standard hydraulic elevator.

Here are a few I've heard mentioned, but Im not 100% sure about:

1. Traction elevators need a light, switch, and possibly a receptacle at the top of the hoistway since the motor is in the hoistway.
2. Traction elevators don't need sprinklers or heat detectors in the pit or elevator shaft, and don't need a shunt trip. (Looking at the codes and talking to a few people, I've heard that it is impossible to get rid of the shunt trip since the control room usually has to be sprinklered. And I've heard people usually sprnkler the pit anyway, since debris tends to accumulate in the pit.).

Steve

 

[bori]

traction elevator

traction elevator

Traction and Hydro share the same article 600.In traction, the car lights switches are not in hoistway they are in machine room above shaft, there is a light and a GFCI receptacle on top of car,smoke detector at top of shaft,Simplex now has a device that can be place in machine room so an Elevator tech is not neede to run a person up to top of shaft to test device. In our location machine room for traction does not have sprinkler system. Hope this helps

 

[iwire]

I have not seen any traction motors in the hoist-way, always in the machine room on top of the hoist-way or in some very old ones a machine room at the bottom and to one side of the hoist-way.

I can't comment on sprinklers but we have disconnected the shunt trips of many elevators in RI per the direction of the elevator inspectors. That being the case I would think you need to check you local area for changes.

 

[steve66]

I have not seen any traction motors in the hoist-way, always in the machine room on top of the hoist-way or in some very old ones a machine room at the bottom and to one side of the hoist-way.

I can't comment on sprinklers but we have disconnected the shunt trips of many elevators in RI per the direction of the elevator inspectors. That being the case I would think you need to check you local area for changes.

That's odd that you are taking out shunt trips - we are still specifying them around here.

I don't think we are talking about the same types of elevators. The new elevators I see a lot are usually like the Kone EcoSpace or MonoSpace elevators. The motors mount right inside the hoistway, and all the controls are in a single panel. They say a machine room isn't required (although it still seems like I need somewhere to mount the car disconnect and motor disconnects.)

Here is a quote from their website:

KONE was the first to provide an MRL elevator solution in the 1990s and today leads the industry with over 125,000 MRL applications. Utilizing revolutionary KONE EcoDisc technology, the hoisting machine attaches to the guide rail while all control and logic systems are placed in an integral control space, thus eliminating the need for a separate machine room.

But I'm in a fairly rural area - most of the elevators I see are only a few stops. I would guess you probably see a lot of high rise elevators where you are at, Bob.

 

[ATSman]

Elevator Pre-Signal & ATS position signals

Elevator Pre-Signal & ATS position signals

If the elevator controls are of the newer solid state design or if the relay logic is upgraded to SS controls then chances are any ATSs feeding them must send a signal (contact closure) to the elev controls prior to a hot-bus, hot-bus transfer. The reason being is that damage can occur to the controller if a car is moving during transfer from one hot source to the other. Then a second signal is sent to elev controller to tell it the cars are running of of generator. This will limit the number of cars to run and not to OL the genset.
Bottom line: pull 2 pair #14 THW stranded between the ATS cabinet and elev controller and let the other trades terminate and test.

 

[weressl]

I have not seen any traction motors in the hoist-way, always in the machine room on top of the hoist-way or in some very old ones a machine room at the bottom and to one side of the hoist-way.

I can't comment on sprinklers but we have disconnected the shunt trips of many elevators in RI per the direction of the elevator inspectors. That being the case I would think you need to check you local area for changes.

Hm..have you seen traction motors mounted on the top of the cab, with their ASD adjacent?!