Presentation / operationPage 1-2 ABB Control - AC 311SBC 260400 R1001-b 06.99This chapter gives you an introduction to the AC 31 automation, from the overall architectureto the operational rules of the 40 and 50 series central units.1. PresentationThe AC 31 brings accessibility to beginners and experienced automation users alike, for anyapplication with 14 to 1000 inputs / outputs and more, using the same set of basiccomponents.From a compact machine fitted with a few automated functions to large installations spreadover hundreds of meter, and even kilometers, the AC 31 can fit your requirements.It is therefore possible to realize distributed applications throughout a site, a workshop, or amachine where each component (input / output unit, central unit) is close to the sensors /actuators. The whole setup is connected by a single twisted pair over which all informationfrom the sensors is sent after processing by the central unit to the actuators, as well asdistributed intelligent units. The following communication interfaces are available, to extend theAC 31’s possibilities and integration with the company's other automation systems:MODBUS , ASCII, ARCNET , RCOM, AF100. The developments in this field are continual.Many users on all the continents have realized numerous applications such as: Machine controlManufacture of floor boardsAssembly of electrical contactorsManufacture of ceramic productsMetallic pipe welding, etc. Controlling-commanding installationsWharf cranesWater treatmentSki liftsWind power machines, etc. Systems managementClimatic managementBuilding power managementTunnel ventilationAlarms in hospital environmentsGreenhouse lighting / humidity, etc.