ConfigurationLimit switch operation89UnithardwareConnectorassignment / cableTechnical dataConfigurationPositioning andcontrol functionsOptimizationfunctionsInterfacesAccessories /optionsStatusParameterError list8.2.8 Limit switch operationP217 ="0" Operating mode without end initiatorsP217 ="1" Operating mode with two end initiators2 initiators are required.The displacement area is limited by the initiators attached at both ends of it. Whenone of the end initiators is activated, an error message appears, the drive isdecelerated using P10; this does not apply to the "Find machine zero" function.Subsequently, the limit switches can be deactivated with Hand+ or Hand-.When P212 = 0 (or = "2"), the initiators are used as reversing initiators during "Findmachine zero".In other machine zero modes, the initiators can be switched to end initiators byP217 via bit 0="1".Bit 114 (P217) = 0: limit switches are not monitored during reference travel.= 1: (P217= 3) limit switches are monitored during "Find machinezero" (when P212<>0 and P212<>2).The operating mode bit 1 (P217)=1 assumes that 3 initiators are connected. Here itis not possible to use one of the two end initiators as a machine zero initiator.Regardless of the search direction P213, both limit switches are monitored.When one of the two limit switches is reached, COMPAX responds with anemergency stop.Then the following applies: move out of the danger zone using Hand+/-, thenacknowledge.In such cases, the "MZ approached" output is not set.Bit 2 (P217) = 0: function corresponding to Bit 0 and Bit 1.= 1: (P217= 5) after activation of a limit switch, the drive is brakedwith P10 (standard), however travel movements are stillpossible afterwards using POSA and POSR.The operating mode bit 1 (P217)=5 assumes that 3 initiators are connected. Here itis not possible to use one of the two end initiators as a machine zero initiator.Initiator I1 is assigned the direction of motor rotation using P216.P216: ="0": initiator I1 is approached with the clockwise rotating motor.P216: ="1": initiator I1 is approached with the anti-clockwise rotating motor.Clockwise rotation defined when looking at the motor shaft.Move to a limit switch using Hand+ (when P215="0"); an error message appears inthe COMPAX display:♦ error 50: I1 has been activated; i.e. P216="0"♦ error 51: I2 has been activated; i.e. P216="1"This allocation only applies if P215="0"; if P215="1" the allocation isreversed.When operating with the reversing initiators, but no limit switches, an errormessage will not appear. You then have two options:14 Bit-counting begins with Bit 0.Limit switchmonitoringduring thereference travelResponse when thelimit switch isreached:Limit switchmonitoringwithout lockingthe movementP216:specifying thelimit switchpositionSetting aid:
