Danfoss VLT FC 102 Operating Instructions Manual

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Sleep Mode The energy-saving function is enabled. Thismeans that at present the motor has stopped,but it will restart automatically when required.Speed high Motor speed is above the value set in4-53 Warning Speed High.Speed low Motor speed is below the value set in4-52 Warning Speed Low.Standby In Auto On mode, the frequency converter willstart the motor with a start signal from adigital input or serial communication.Start delay In 1-71 Start Delay, a delay starting time wasset. A start command is activated and themotor will start after the start delay timeexpires.Start fwd/rev Start forward and start reverse were selectedas functions for 2 different digital inputs(parameter group 5-1* Digital Inputs). Themotor will start in forward or reversedepending on which corresponding terminalis activated.Stop The frequency converter has received a stopcommand from the LCP, digital input or serialcommunication.Trip An alarm occurred and the motor is stopped.Once the cause of the alarm is cleared, thefrequency converter can be reset manually bypressing [Reset] or remotely by controlterminals or serial communication.Trip lock An alarm occurred and the motor is stopped.Once the cause of the alarm is cleared, powermust be cycled to the frequency converter.The frequency converter can then be resetmanually by pressing [Reset] or remotely bycontrol terminals or serial communication.Table 7.4 Operation StatusNOTICEIn auto/remote mode, the frequency converterrequires external commands to execute functions.7.2 Warning and Alarm TypesWarningsA warning is issued when an alarm condition is impendingor when an abnormal operating condition is present andmay result in the frequency converter issuing an alarm. Awarning clears by itself when the abnormal condition isremoved.AlarmsTripAn alarm is issued when the frequency converter istripped, which means that the frequency convertersuspends operation to prevent frequency converter orsystem damage. The motor will coast to a stop. Thefrequency converter logic will continue to operate andmonitor the frequency converter status. After the faultcondition is remedied, the frequency converter can bereset. It will then be ready to start operation again.Resetting the frequency converter after trip/trip lockA trip can be reset in any of 4 ways:• Press [Reset] on the LCP• Digital reset input command• Serial communication reset input command• Auto resetTrip lockInput power is cycled. The motor coasts to a stop. Thefrequency converter continues to monitor the frequencyconverter status. Remove input power to the frequencyconverter, correct the cause of the fault, and reset thefrequency converter.Warning and Alarm Displays• A warning is displayed in the LCP along with thewarning number.• An alarm flashes along with the alarm number.130BP086.11Status0.0Hz 0.000kW 0.00A0.0Hz0Earth Fault [A14]Auto Remote Trip1(1)Illustration 7.2 Alarm Display ExampleIn addition to the text and alarm code on the LCP of thefrequency converter, there are 3 status indicator lights.Autoon ResetHandon OffBackCancelInfoOKOnAlarmWarn.130BB467.10Illustration 7.3 Status Indicator LightsDiagnostics and Troubleshoo... VLT® HVAC Drive Operating Instructions34 MG11AJ02 - Rev. 2013-07-3177