PowerFlex 750-Series AC Drives User Manual

4-20 TroubleshootingCommon Symptoms andCorrective ActionsDrive does not Start from Start or Run Inputs wired to the terminal block.Cause(s) Indication Corrective ActionDrive is FaultedFlashing redstatus lightClear fault.• Press Stop• Cycle power• “Clear Faults” on the HIMDiagnostic menu.Incorrect input wiring. See page 1-38 for None Wire inputs correctly.wiring examples.• 2 wire control requires Run, Run Forward,Run Reverse or Jog input.• 3 wire control requires Start and Stopinputs.• Verify 24 Volt Common is connected toDigital Input Common.Incorrect digital input programming. None Configure input function.• Mutually exclusive choices have been Flashing yellow Resolve input function conflicts.made (i.e., Jog and Jog Forward). status light and• 2 wire and 3 wire programming may be “DigIn Cnfg B”conflicting.or• Start configured without a Stop “DigIn Cnfg C”configured.indication onLCD HIM.P936 [DriveStatus 2] showstype 2 alarm(s).Terminal block does not have control. None Check P324 [Logic Mask].Drive does not Start from HIM.Cause(s) Indication Corrective ActionDrive is configured for 2 wire levelcontrol.None Change P150 [Digital In Conf] to correctcontrol function.Another device has Manual control. NonePort does not have control. None Change P324 [Logic Mask] to enable correctport.Drive does not respond to changes in speed command.Cause(s) Indication Corrective ActionNo value is coming from the sourceof the command.Incorrect reference source hasbeen programmed.Incorrect Reference source isbeing selected via remote device ordigital inputs.LCD HIM StatusLine indicates“At Speed” andoutput is 0 Hz.1. If the source is an analog input, checkwiring and use a meter to check forpresence of signal.2. Check P2 [Commanded SpdRef] for correctsource. (See page 3-19)None 3. Check P545 [Spd Ref A Sel] for the sourceof the speed reference. (See page 3-64)4. Reprogram P545 [Spd Ref A Sel] for correctsource. (See page 3-64)None 5. Check P935 [Drive Status 1], page 3-101,bits 12 and 13 for unexpected sourceselections.6. Check P220 [Digital In Sts], page 3-35 tosee if inputs are selecting an alternatesource.7. Check configuration of P173-175 [DI SpeedSel X] functionsPowerFlex 750-Series User Manual – Publication 750-UM001C-EN-P – September 2009