SIMATIC ET 200 - For distributed automation solutions - November ...

© Siemens AG 2010Motor starters for any applicationThe ET 200S motor starters can be used to protect andswitch any three-phase load. The completely prewireddevices are available in different performance classes asdirect, reversing or soft-starters up to an output of 7.5 kW.The terminal module contains the self-assembling energy busand the terminals for direct connection of the motor cable.A motor starter can be removed and inserted without theneed to isolate the system.Standard motor starters• Circuit-breaker and contactor combination up to 5.5 kW• Direct-on-line or reversing starters• Optional safety systemHigh Feature motor starters• Combination of starter circuit-breaker, electronic overloadrelay and contactor or soft starter up to 7.5 kW• Comprehensive diagnostics messages, e.g. actual currentvalue• Statistical data, e.g. current for the last overload trip, canbe read out using the service and commissioning softwareMotorstarter ES• Parameterization over the bus• Only two current setting ranges up to 7.5 kW• Safety technology integratedFail-safe motor starterAs soon as more complex or widely distributed safety applicationsare implemented, the Failsafe motor starter in combinationwith the PM-D F PROFIsafe power module is the optimizedsolution. Signals from safe sensors are read in through safe inputsat any required point in a plant and transferred to the failsafeprogrammable controller via PROFIBUS by means of thePROFIsafe message frame. In the application program they arelinked to the Failsafe motor starters or the associated powermodule.These motor starters based on the High Feature motor starteroffer a completely new patented technique for safety shutdown:Whereas under normal operation the contactor isresponsible for shutdown, in the event of a fault, e.g. weldedcontactor contacts, the integral dual processor monitoring alsotrips the circuit-breaker. This ensures that each individual motorstarter achieves Category 4 or SIL 3 without additionalredundancy contactors.The fail-safe motor startermonitors the function of thecontactor regardless ofwhether the application issafety-related or not, sothese devices are also suitablefor use in high-availabilityprocesses.Further characteristics thatsupport high availability are:• Type of coordination 2over the complete power range up to 7.5 kW• The emergency start function allows important processesto be continued to completion despite a reason for shutdown,e.g. overload.Advantages of fail-safe motor starters over conventionalsafety systems• Significantly fewer components, therefore less complexconfigurations and considerably less HW engineering andwiring overhead• Rapid installation thanks to simple plug-in technology• Motor starters are fault tolerant and failsafe• High degree of flexibility thanks to assignment to switchoffgroups in software• When the safety application changes, there is less overheadbecause the wiring is retainedTwo alternatives are available:Motor starter for failsafeET 200SSolution local• Used for locally restricted safety applications• For group deactivation of Standard, High-Feature or Failsafemotor starters without complex wiring for conventionalsafety systems• For local evaluation of EMERGENCY STOP circuits withautomatic or monitored starting• Cascading of the shutdown groups• Can also be used in combination with external safetycircuitsSolution PROFIsafe• For usage with safety-related applications that are complexand interconnected• The logic of the safety functions (safe sensors can befreely assigned to Failsafe motor starters) is implementedwith software and thanks to safety-related communication(PROFIsafe)• Safety module PM-DF PROFIsafe forms 6 shutdowngroups• Selective and autonomous shutdown of the fail-safemotor starter for any safety function• Also for controlling external safety systems through F-CMcontact multiplier30SIMATIC ET 200S