Stahl - Catalog - STAHL - #319

Text version of the page

4/3 4 Automation 17.04.2008 Remote I/O System General System Description 05855E02 The IS1 system provides a modern, cost-effective and flexible remote I/O system with intrinsically safe inputs and outputs, suitable for direct installation in hazardous areas. The uniform system concept permits installation in Zone 1 / Division 1, in Zone 2 / Division 2, Zone 21, Zone 22 and in safe area. Inputs and outputs are optimized for the sensors and actuators used in process technology. The integration of different fieldbuses permits digital communication with many automation systems. IS1 consists of three components: • BusRail for the internal bus and for the power supply of the I/O modules • CPU & Power Module for fieldbus communication and power supply • I/O modules for the inputs and outputs of the process signals Configuration of a Field Station 09864E02 The I/O modules have 4, 6, 8 or 16 channels and can be plugged into any position on the BusRail. Addresses are assigned automatically. A BusRail can be mechanically distributed over serveral rail segments. Individual segments are connected by cable. An extensive range of field enclosures permits adaptation of the mechanical requirements of an application. Internal Bus 05856E02 The internal bus provides data exchange between the CPU & Power Module and the I/O modules. It is a component of the BusRail. The I/O modules are addressed on the internal bus by means of the slot on the BusRail, so that an address setting is not necessary. The internal bus in the BusRail is designed to be redundant in all modules, so that even in the event of a fault the communication between modules is guaranteed. CPU & Power Module I/O Modules BusRail Plug-in terminals Rail segmentI Rail segmentII Link cable CPU & Power Module I/O Module BusRail Internal Bus Redundant internal Bus