Danfoss VLT AutomationDrive FC 301 Operating Instructions Manual

Also see for VLT AutomationDrive FC 301: Programming guide Installation guide Operating guide Installation guide Design guide

Danfoss VLT AutomationDrive FC 301 Operating Instructions Manual Manual pdf 42 page image

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 in the LCP, thereare 3 status indicator lights (LEDs).BackCancelInfoOKOnAlarmWarn.130BB467.11Warning LED Alarm LEDWarning On OffAlarm Off On (Flashing)Trip-Lock On On (Flashing)Illustration 7.3 Status Indicator Lights (LEDs)7.4 List of Warnings and AlarmsThe following warning/alarm information defines eachwarning/alarm condition, provides the probable cause forthe condition, and details a remedy or troubleshootingprocedure.WARNING 1, 10 Volts lowThe control card voltage is <10 V from terminal 50.Remove some of the load from terminal 50, as the 10 Vsupply is overloaded. Maximum 15 mA or minimum 590 Ω.A short-circuit in a connected potentiometer or incorrectwiring of the potentiometer can cause this condition.Troubleshooting• Remove the wiring from terminal 50. If thewarning clears, the problem is with the wiring. Ifthe warning does not clear, replace the controlcard.WARNING/ALARM 2, Live zero errorThis warning or alarm only appears if programmed in6-01 Live Zero Timeout Function. The signal on one of theanalog inputs is less than 50% of the minimum valueprogrammed for that input. Broken wiring or a faultydevice sending the signal can cause this condition.Troubleshooting• Check the connections on all the analog inputterminals.- Control card terminals 53 and 54 forsignals, terminal 55 common.- MCB 101 terminals 11 and 12 for signals,terminal 10 common.- MCB 109 terminals 1, 3, 5 for signals,terminals 2, 4, 6 common.• Check that the frequency converter programmingand switch settings match the analog signal type.• Perform an input terminal signal test.WARNING/ALARM 3, No motorNo motor has been connected to the output of thefrequency converter.WARNING/ALARM 4, Mains phase lossA phase is missing on the supply side, or the mainsvoltage imbalance is too high. This message also appearsfor a fault in the input rectifier on the frequency converter.Options are programmed in 14-12 Function at MainsImbalance.Troubleshooting• Check the supply voltage and supply currents tothe frequency converter.WARNING 5, DC link voltage highThe intermediate circuit voltage (DC) is higher than thehigh-voltage warning limit. The limit is dependent on thefrequency converter voltage rating. The unit is still active.WARNING 6, DC link voltage lowThe intermediate circuit voltage (DC) is lower than the low-voltage warning limit. The limit is dependent on thefrequency converter voltage rating. The unit is still active.WARNING/ALARM 7, DC overvoltageIf the intermediate circuit voltage exceeds the limit, thefrequency converter trips after a time.Troubleshooting• Connect a brake resistor.• Extend the ramp time.• Change the ramp type.• Activate the functions in 2-10 Brake Function.• Increase 14-26 Trip Delay at Inverter Fault.• If the alarm/warning occurs during a power sag,use kinetic back-up (14-10 Mains Failure).Maintenance, Diagnostics an... Operating Instructions40 Danfoss A/S © Rev. 07/2014 All rights reserved. MG33AP0277