Nidec Unidrive M400 series Quick Start Manual

Also see for Unidrive M400 series: Power Installation Guide Installation sheet User guide Step-by-step guide Step-by-step guide

Nidec Unidrive M400 series Quick Start Manual Manual pdf 64 page image

64 Unidrive M400 Quick Start GuideIssue Number: 88.1 Alarm indicationsIn any mode, an alarm is an indication given on the display by alternating the alarm string with thedrive status string display. If an action is not taken to eliminate any alarm except "tuning”, “LS" or“24.LoSt” the drive may eventually trip. Alarms are not displayed when a parameter is being edited.Table 8-2 Alarm indicationsThermistor Motor thermistor over-temperatureThe Thermistor trip indicates that the motor thermistorconnected to terminal 14 (digital input 5) on the controlconnections has indicated a motor over temperature.User OI ac User OI acThe User OI ac trip is initiated if the output current of thedrive exceeds the trip level set by User Over CurrentTrip Level. Refer to the Control User Guide.User Prog Trip Trip generated by an onboarduser programThis trip can be initiated from within an onboard userprogramUser Program On board user program error An error has been detected in the onboard user programimage.User Save User Save error / not completedThe User Save trip indicates that an error has beendetected in the user save parameters saved in non-volatile memory.Watchdog Control word watchdog hastimed outThe Watchdog trip indicates that the control word hasbeen enabled and has timed outAlarm string DescriptionBrakeResistorBrake Resistor overload. Braking Resistor Thermal Accumulator in the drive hasreached 75.0 % of the value at which the drive will trip.Refer to the PowerInstallation Guide.MotorOverloadMotor Protection Accumulator in the drive has reached 75.0 % of the value atwhich the drive will trip and the load on the drive is >100 %, reduce motor current(load). Refer to the Parameter Reference GuideDriveOverloadDrive over temperature. Percentage Of Drive Thermal Trip Level in the drive isgreater than 90 %. Refer to the Parameter Reference GuideAutotune The autotune procedure has been initialized and an autotune in progress.Limit Switch Limit switch active. Indicates that a limit switch is active and that is causing themotor to be stopped.Low AC Low voltage mode. See Low AC Alarm in Control User Guide.Current Limit Current limit active. See Current Limit Active in Control User Guide.24V BackupLost 24V backup not present. See 24V Alarm Loss Enable in the Control User Guide.Trip code Condition Description