PA7300 Instruction Manual - TECO-Westinghouse Motor Company

Fault ContactoutputNon Operation Input voltage dropError causesAction to be takenCheck the main circuit DC voltage in Un-xx. If thevoltage is low, adjust the input voltage.Non Operation Input voltage riseCheck the main circuit DC voltage in Un-xx. If thevoltage is high, adjust the input voltage.Non OperationOverloadCooling fan faultAmbient temperature riseClogged filterReplace the cooling fan and clean the filter.Ambient temperature:104 (40) or less for enclosed type122 (45) or less for open chassisNon OperationMotor current exceeded the set value because ofmachine fault or overload.Check the driven machine and correct the cause of thefault or set to a higher value.Non OperationInsufficient power for accel/decelOverloadPhase lossSet proper accel/decel time for smooth operation.For stall prevention during normal operation lightenthe load or increase inverter capacity.Non OperationOperation sequence error3-wire/2-wire selection errorRecheck the control sequence.Recheck system constant (Sn-15 to -18)Non Operation External fault conditions set-upTake appropriate measurement for the cause of externalfault input.Non OperationTransmission between the inverter and digitaloperator cannot be established 5 seconds aftersupplying power.Transmission between the inverter and digitaloperator is established once after supplying power,but later transmission fault continued for more than 2seconds.Insert the operator connector again.Check the wiring of control circuit.Replace the control board or operator.116