A commercial refrigeration system has a control system (70) which distributes intelligence to increase granularity of the control and simplify wiring, assembly and installation. Compressors (14A-C) of the refrigeration system each have a bus compatible compressor safety and control module (48) including...http://www.google.de/patents/US20030037555?utm_source=gb-gplus-sharePatent US20030037555 - Distributed intelligence control for commercial refrigeration