3 90s Aufzüge+Service AG Office Lifts with EPIC Sound in Zürich, Switzerland

Timestamps:
0:00 intro
0:23 normal ride
3:10 motor room
8:04 car top / lift shaft

These lifts are situated in an office building in Zürich, Switzerland. They were installed upon construction of the building in the early 90s by the company Aufzüge+Service AG from Bichwil, canton of St. Gallen. Aufzüge+Service AG was one of the many small lift companies that existed in the 90s in Switzerland. They used many Thyssen components in their installs and were later on bought by TKE.

The lifts run on a nowadays very rare controller system that I have yet only seen on lifts by Aufzüge+Service AG. Finding more information on it is very hard due to the company having been bought by TKE years ago. The system seems to originate from Aufzüge+Service AG themselves and is built in a modular way by having a CPU unit as well as in- and output slot-in modules inside a rack. The controller of lift number one of the also has a group dispatcher, labelled Zentralteil (central part). The controllers use an incremental magnetic shaft info system (return to bottom floor after position lost). Advanced door opening is enabled on all lifts, the bridging of door safety happens through dedicated relays (no safety relay board).
The drives used on these lifts are Loher Dynalift DCL computer thyristor drives. They produce a distinct sound that is typical for this drive type.

Manufacturer: Aufzüge+Service AG, 1991
Capacity small: 10 persons / 800 kg
Capacity big: 21 persons / 1600 kg
Type: Traction, 1:1 roping
Floors: 9: -3, -2, -1, E, 1-5
Fixtures: Schaefer MT28
Speed: 1.6 m/s
Travel height: 27.2m
Logic: BGT-S
Drive: Loher Dynalift DCL Computer
Motor small: Loher + Thyssen W191, 13.5kW
Motor big: Loher + Thyssen W263B, 23kW

WARNING/DISCLAIMER: DO NOT attempt to copy anything shown in the video without having the proper knowledge of how to do so! LIFT SHAFTS and MACHINE ROOMS are very DANGEROUS places and are NOT MEANT to be accessed by inexperienced or untrained personnel!
Dangers in these environments include but are not limited to crushing, electrocution, falling and burns.

Recording: Q4 / 2023