FR-F700 INSTRUCTION MANUAL (BASIC) - MRO Stop

Causes and corrective actionsOperation PanelIndicationNameDescriptionCheck pointCorrective actionOperation PanelIndicationNameDescriptionCheck pointCorrective actionFR-PU04E.PUEPU Leave OutFR-PU07PU disconnection· This function stops the inverter output if communication between the inverter and PU is suspended,e.g. the operation panel and parameter unit is disconnected, when "2", "3", "16" or "17" was set in Pr.75 Reset selection/disconnected PU detection/PU stop selection.· This function stops the inverter output when communication errors occurred consecutively for morethan permissible number of retries when a value other than "9999" is set in Pr. 121 Number of PUcommunication retries during the RS-485 communication with the PU connector.· This function also stops the inverter output if communication is broken within the period of time set inPr. 122 PU communication check time interval during the RS-485 communication with the PU connector.· Check that the FR-DU07 or parameter unit (FR-PU04/FR-PU07) is fitted tightly.· Check the Pr. 75 setting.Fit the FR-DU07 or parameter unit (FR-PU04/FR-PU07) securely.FR-PU04E.RETRetry No OverFR-PU07Retry count excessIf operation cannot be resumed properly within the number of retries set, this function trips the inverter.Functions only when Pr. 67 Number of retries at fault occurrence is set. When the initial value (Pr. 67 = "0")is set, this fault does not occur.Find the cause of alarm occurrence.Eliminate the cause of the error preceding this error indication.Operation PanelIndicationNameDescriptionCheck pointCorrective actionOperation PanelIndicationNameDescriptionCheck pointCorrective actionOperation PanelIndicationNameDescriptionCheck pointCorrective actionE. 6Fault 6E. 7FR-PU04FR-PU07Fault 7E.CPUCPU FaultCPU errorStops the inverter output if the communication error of the built-in CPU occurs.Check for devices producing excess electrical noises around the inverter.· Take measures against noises if there are devices producing excess electrical noises around theinverter.· Please contact your sales representative.FR-PU04 ————E.CTEFR-PU07 E.CTEOperation panel power supply short circuit, RS-485 terminal power supply short circuitWhen the operation panel power supply (PU connector) is shorted, this function shuts off the poweroutput. At this time, the operation panel (parameter unit) cannot be used and RS-485 communicationfrom the PU connector cannot be made. When the internal power supply for the RS-485 terminals areshorted, this function shuts off the power output.At this time, communication from the RS-485 terminals cannot be made.To reset, enter the RES signal or switch power off, then on again.1. Check for a short circuit in the PU connector cable.2. Check that the RS-485 terminals are connected correctly.1. Check the PU and cable.2. Check the connection of the RS-485 terminalsFR-PU04E.P24E.P24FR-PU0724VDC power output short circuitWhen the 24VDC power output from the PC terminal is shorted, this function shuts off the power output.At this time, all external contact inputs switch off. The inverter cannot be reset by entering the RESsignal. To reset it, use the operation panel or switch power off, then on again.· Check for a short circuit in the PC terminal output.· Remedy the earth (ground) fault portion.102