Salzgitter AG, Salzgitter, Germany
Jumpering level with spring cage terminal blocks and Varioface
The system connection at the rear of the honeycomb elements in the PLC cabinet as well as the switch cabinet feed-through in the jumper cabinet bring about a reduction in costs due to space-saving, as well as an excellent switch cabinet appearance. The latter offers clarity in the event of malfunctions or if the system is expanded. In the jumper cabinet, the incoming master cables from the sensors and actuators of the field devices are first routed consecutively onto the spring cage terminal blocks of the ZFK range. The necessary connections are realized between the spring cage terminal blocks and the spring cage jumpering honeycomb elements in this jumpering level. In this way the technicians from ESA-Elektro-Schaltanlagen (ESA electronic switch gear), the Braunschweig company which has been appointed with building the system, has made sure that additional wiring during expansion or subsequent modifications of the system could be carried out simply and quickly.
Data transmission via optical data light barriers
Instead of a data line, an inexpensive alternative to trailing cables or collector wires requiring regular maintenance has thus been implemented. The PSM-ODL modules allow bi-directional data connections via infrared light up to 200 m.
The crucible furnaces, electric heating facilities with transformer capacities of 24 MVA, can increase the temperature of the smelts by up to 3° K/min in the range to 1,750° if necessary. Necessary metallurgic treatments such as setting lowest sulphur content for example, can thus be carried out. With the alloy plants and different alloys, analyses can be set to a thousandth. These requirements are today an absolute must for top quality goods and are needed for pipework for oil field pipes in permafrost regions or for sheets for galvanizing in the car industry.
Startup during production