Bamberger Str. 2-6, 96450 Coburg


From 2012 to the present


net-line FW-5, net-line FW-50


IEC 60870-5-104, Modbus

SÜC in Upper Franconia is a reliable supplier of mainly energy, gas, water and heating for Coburg and the surrounding area. At the end of 2011 we participated in a trial as part of the project “feed-in management for renewable energy and hydroelectric plants of more than 100 kW” – successfully!


The SÜC personnel were convinced by the overall telecontrol concept with simple configuration, so at the start of 2012 we received the order to supply renewable energy plants. The net-line FW-5 renewable energy systems were delivered fully pre-installed in a wall-mounted housing and, after initial support with commissioning, could be planned independently. Communication was mostly set up with a GPRS link using IEC 60870-5-104, the connection being made to the RESY central control station by means of a net-line FW-50 node.

The SÜC engineers were so impressed by the renewables project that SAE telecontrol technology was also chosen for the planned connection of further transformer stations. The medium-voltage plants can mostly be reached with their own FO cables, so in this case too communication was set up using IEC 60870-5-104. In addition to the monitoring of transformer switches, gas monitoring, transformer temperature, battery signalling etc., in this case the 1.5-pole actuation of two isolator switches is provided by double command, which is realised by means of the net-line FW-5 add-on module DSO-1.

At the start of 2013, SÜC put a new cogeneration unit for heat and power supply with two machines into operation. Previously a net-line FW-50 station in a 19″ rack was chosen for connection using IEC 60870-5-104. In addition to the relatively large I/O capacity with metered value processing and switch actuation with checkback via DSO modules, two Modbus remote connections for cogeneration plant control and a further PLC were realised.