Project: October 1995 – April 1996 (7 months)
Description
Collaboration in the development of an electronic control system for the operation of fans (EC technology) used in clean room areas and building air conditioning. Fan controllers are connected via RS-485 bus with a hierarchical, multi-stage topology. At most, 31 x 8 x 31 devices can be networked; the largest installation included around 2,500 fan units (chip fabrication). Operation and visualization, installation and maintenance were conducted via a RS-232/RS-485 gateway on an industrial PC. The cycle time on the PC takes around 5 minutes with 7,688 fan units.
Summary
| Project | Filter Fan Unit |
| Duration | October 1995 – April 1996 (7 months) |
| Customer | ERL Elektronische Steuerungen GmbH, Markdorf |
| Industry Sector | Clean Room Technology |
| Role / Responsibility | Employee |
| Software / Tools / Methods | Keil C51 Cross Compiler, Microsoft Visual C/C++ 1.5, RS-232 Communication Protocol, RS-485 Communication Protocol |
| Hardware Environment | Siemens 80C517A Microcontroller, IBM compatible PC, Windows 3.11, RS-232/RS-485 Adapter, HP Oscilloscope |