Danfoss VLT FC 360 Design Manual

Also see for VLT AutomationDrive FC 360: Quick guide Quick guide Quick guide Programming guide Programming guide

Contents

Danfoss VLT FC 360 Design Manual Manual pdf 41 page image

NOTEOVC can be activated when running a PM motor (when1-10 Motor Construction is set to [1] PM non salient SPM).2.10 Smart Logic ControllerSmart Logic Control (SLC) is essentially a sequence of userdefined actions (see 13-52 SL Controller Action [x]) executedby the SLC when the associated user defined event (see13-51 SL Controller Event [x]) is evaluated as TRUE by theSLC.The condition for an event can be a particular status orthat the output from a Logic Rule or a ComparatorOperand becomes TRUE. That will lead to an associatedaction as illustrated:. . .. . .Par. 13-43Comparator OperatorPar. 13-43Logic Rule Operator 2Par. 13-51SL Controller EventPar. 13-51SL Controller Action130BB671.10CoastStart timerSet Do X lowSelect set-up 2. . .RunningWarningTorque limitDigital inpute X 30/2. . .=TRUE longer than... . .. . .Illustration 2.24 Associated ActionEvents and actions are each numbered and linked togetherin pairs (states). This means that when event [0] is fulfilled(attains the value TRUE), action [0] is executed. After this,the conditions of event [1] will be evaluated and ifevaluated TRUE, action [1] will be executed and so on.Only one event will be evaluated at any time. If an event isevaluated as FALSE, nothing happens (in the SLC) duringthe current scan interval and no other events will beevaluated. This means that when the SLC starts, itevaluates event [0] (and only event [0]) each scan interval.Only when event [0] is evaluated TRUE, will the SLCexecute action [0] and start evaluating event [1]. It ispossible to programme from 1 to 20 events and actions.When the last event/action has been executed, thesequence starts over again from event [0]/action [0].Illustration 2.25 shows an example with three event/actions:130BA062.13State 1Event 1/Action 1 State 2Event 2/Action 2Startevent P13-01State 3Event 3/Action 3State 4Event 4/Action 4Stopevent P13-02Stopevent P13-02Stopevent P13-02Illustration 2.25 Sequence with Three Event/ActionsComparatorsComparators are used for comparing continuous variables(i.e. output frequency, output current, analog input etc.) tofixed preset values.Par. 13-11Comparator Operator=TRUE longer than.. . .. . .Par. 13-10Comparator OperandPar. 13-12Comparator Value130BB672.10Illustration 2.26 ComparatorsLogic RulesCombine up to three boolean inputs (TRUE/FALSE inputs)from timers, comparators, digital inputs, status bits andevents using the logical operators AND, OR, and NOT.. . .. . . . . .. . .Par. 13-43Logic Rule Operator 2Par. 13-41Logic Rule Operator 1Par. 13-40Logic Rule Boolean 1Par. 13-42Logic Rule Boolean 2Par. 13-44Logic Rule Boolean 3130BB673.10Illustration 2.27 Logic Rules2.11 Extreme Running ConditionsShort circuit (motor phase – phase)The frequency converter is protected against short circuitsby means of current measurement in each of the threemotor phases or in the DC link. A short circuit betweentwo output phases will cause an overcurrent in theinverter. The inverter will be turned off individually whenProduct Overview VLT® AutomationDrive FC 360 Design GuideMG06B202 - VLT® is a registered Danfoss trademark 392 2