Logic rulesCombine up to three Boolean (TRUE/FALSE) inputs fromtimers, comparators, digital inputs, status bits and eventsusing 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 3130BB673.10Figure 3.38 Logic RulesApplication exampleParametersFC+24 V+24 VD IND IND INCOMD IND IND IND IN+10 VA INA INCOMA OUTCOMR1R212131819202729323337505354554239010203040506130BB839.10Function Setting4-30 MotorFeedback LossFunction[1]Warning4-31 MotorFeedback SpeedError100 RPM4-32 MotorFeedback LossTimeout5 s7-00 Speed PIDFeedback Source[2] MCB10217-11 Resolution(PPR)1024*13-00 SLController Mode[1] On13-01 Start Event [19]Warning13-02 Stop Event [44]Reset key13-10 ComparatorOperand[21]Warningno.13-11 ComparatorOperator[1] ≈*13-12 ComparatorValue9013-51 SLController Event[22]Comparator 0ParametersFunction Setting13-52 SLController Action[32] Setdigital outA low5-40 FunctionRelay[80] SLdigitaloutput ANotes/Comments:If the limit in the feedbackmonitor is exceeded, Warning90 will be issued. The SLCmonitors Warning 90 and ifWarning 90 becomes TRUE,then Relay 1 is triggered.External equipment may thenindicate that service may berequired. If the feedbackerror goes below the limitagain within 5 s, the drivecontinues and the warningdisappears. But Relay 1 willstill be triggered until [Reset]on the LCP.Table 3.20 Using SLC to Set a Relay3.11 Extreme Running ConditionsShort Circuit (Motor Phase – Phase)The adjustable frequency drive is protected against shortcircuits by means of current measurement in each of thethree motor phases or in the DC link. A short circuitbetween two output phases causes an overcurrent in theinverter. The inverter turns off individually when the shortcircuit current exceeds the permitted value (Alarm 16 TripLock).To protect the adjustable frequency drive against a shortcircuit at the load sharing and brake outputs, seeApplication Note for FC 100, FC 200 and FC 300 Fuses andCircuit Breakers.See certificate in .Switching on the OutputSwitching on the output between the motor and theadjustable frequency drive is fully permitted. Switching onthe output does not damage the adjustable frequencydrive, but fault messages may appear.Product Introduction Design Guide60 Danfoss A/S © Rev. 2014-02-10 All rights reserved. MG34S22233
