Posted 23 August 2018 - 07:55 AM
The new gondi will be two separate lifts. It is the same configuration as Excalibur gondola that went in in 1994. If we run the new lift in "through" mode we can do 6m/s, if we are in "normal" mode with the sections separated, we can only do 3m/s due to the short terminals at midstation. As I mentioned earlier, there is no Auxiliary diesel drive on this lift. Redundancy is obtained by using the triple drive set up with back up generators at each drive (top) station, so we can run full cabin capacity at all times, but reduced overall capacity. As for speed synchronisation, on Excalibur there is a 4-20 mA loop created at the top drive station. This goes down the comm line to the bottom section and the drives in both sections use this as a speed reference. For the new lift it might be the same, or there could be communication between the PLC's over the fibre cable and the speed signal is shared that way. Don't know what PSS we are getting. Control panels aren't here yet.
Rob
Ray's Rule for Precision - Measure with a micrometer, mark with chalk, cut with an axe.