Parker AC15 Series Hardware Installation Manual

DOC-0017-03-EN: AC15 Series - Hardware Installation ManualDOC-0017-03-EN-B 04.04.2023 61 (125)STO TestStep Test Check or Activity Expected Reaction & Effect6 Reapply +24V to terminals STOA andSTOB and acknowledge the STO trip. STO trip must clear.7 Try to restart the inverter at SPT1. Inverter must restart at SPT1.8 Stop the inverter. Inverter must decelerate to rest.This test can also be automated - where the STO channels can be triggered via contacts of an externalrelay.8.7 STO TroubleshootingThe table below is for guidance only and may not be a comprehensive list of all possible symptoms relatingto STO.Parker will not accept responsibility for any consequences arising from its incompleteness or inaccuracy.ProblemAC15DisplaySTO InputChannel Awrt 0VSTO InputChannel Bwrt 0VPossibleCause DescriptionInverter will notrun when givena startcommandTripped:31 SafeTorqueOff< 15.0V < 15.0V STO isinvoked.When safe to do so, connectSTOA and STOB to a 24Vdcsupply.Tripped:31 SafeTorqueOff>15.0V &< 25.2V*>15.0V &< 25.2V*STO FaultLatch mayhave tripped.Remove all power from theinverter before re-applying.If symptom persists,immediately return theinverter for repair.Tripped:(Anyother trip1-30 or32-37)>15.0V &< 25.2V*>15.0V &< 25.2V*Inverter hastripped, butnot due toSTO.Reset the trip and remove itscause.If symptom persists, returnthe inverter for repair.Any othermessage>15.0V &< 25.2V*>15.0V &< 25.2V*FaultyHardware.Return the inverter forrepair.Inverter startsunexpectedlyX < 5.0V < 5.0V FaultyHardware.Immediately return theinverter for repair.X > 5.0V > 5.0VSTO notinvoked bythe user.Use STO in accordance withthe instructions documentedin this chapter.Inverter failsComprehensiveor Regular STOtestX X X FaultyHardware.Immediately return theinverter for repair.*26.4V in a maximum operating ambient of 40°C