Safe Torque Off 6-33AC30V series Variable Speed DriveTroubleshootingSymptom Examine:Probable cause RemedyGKP display Useroutput 4 User inputs 5Drive won’t start whengiven a startcommand*** TRIPPED ***SAFE TORQUE OFF On Both < 15V STO is invoked. When safe to do so, connect X10/01 andX10/03 to 24V ± 10%*** TRIPPED ***SAFE TORQUE OFF Off Both >15V and <30VFault latch might havetrippedRemove all power from drive and re-apply. Ifsymptom persists, immediately return theAC30V for repair.See the DANGER box below.Any other trip message, e.g.overvoltage Off Both >15V and <30VDrive is tripped, but notdue to STO.Reset the trip, and remove its cause. Ifsymptom persists, return the AC30V for repair.Any other message Off Both >15V and <30V Faulty hardware Return for repairDrives startsunexpectedlyDon’t care Don’t care Both < 5V Faulty hardware Immediately return the AC30V for repair.See the DANGER box below.Don’t care Off Both > 5V STO not invoked bythe user.Use STO according to instructions elsewhere inthis chapter.Drive failscomprehensive orregular STO testDon’t care Don’t care Don’t care Faulty hardware Immediately return the AC30V for repair.See the DANGER box below.The table above is only a guide. It may not be a comprehensive list of all possible symptoms relating to STO. Parker will not accept responsibility for anyconsequences arising from its incompleteness or inaccuracy.Important note:• There are no user-serviceable parts in the AC30V drive. Refer to the Safety Warnings and Limitations section on page 6-17 of this chapter.4 Continuity through X10/05 and X10/065 Measure X10/01 and X10/03 relative to X10/02 or X10/04
