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.
