GE AF-600 FP Design And Installation Manual

Also see for AF-600 FP Series: Quick installation guide Quick guide Operating instructions Operating instructions Operating instructions

Contents

WARNING/ALARM 8, DC undervoltageIf the intermediate circuit voltage (DC link) drops belowthe under voltage limit, the adjustable frequency drivechecks if a 24 V DC backup supply is connected. If no 24 VDC backup supply is connected, the adjustable frequencydrive trips after a fixed time delay. The time delay varieswith unit size.TroubleshootingMake sure that the supply voltage matches theadjustable frequency drive voltage.Perform input voltage test.Perform soft charge circuit test.WARNING/ALARM 9, Inverter overloadThe adjustable frequency drive is about to cut out becauseof an overload (current too high for too long). The counterfor electronic, thermal inverter protection issues a warningat 98% and trips at 100%, while giving an alarm. Theadjustable frequency drive cannot be reset until thecounter is below 90%.The fault is that the adjustable frequency drive has runwith more than 100% overload for too long.TroubleshootingCompare the output current shown on thekeypad with the adjustable frequency drive ratedcurrent.Compare the output current shown on thekeypad with measured motor current.Display the Thermal Drive Load on the keypadand monitor the value. When running above theadjustable frequency drive continuous currentrating, the counter increases. When runningbelow the adjustable frequency drive continuouscurrent rating, the counter decreases.WARNING/ALARM 10, Motor overload temperatureAccording to the electronic thermal protection, the motoris too hot. Select whether the adjustable frequency driveissues a warning or an alarm when the counter reaches100% in F-10 Electronic Overload . The fault occurs whenthe motor runs with more than 100% overload for toolong.TroubleshootingCheck for motor overheating.Check if the motor is mechanically overloaded.Check that the motor current set in P-03 MotorCurrent is correct.Ensure that Motor data in parameters P-02, P-03,P-06, P-07, F-04 and F-05 are set correctly.If an external fan is in use, check in F-11 MotorExternal Fan that it is selected.Running Auto tune in P-04 Auto Tune tunes theadjustable frequency drive to the motor moreaccurately and reduces thermal loading.WARNING/ALARM 11, Motor thermistor over tempCheck whether the thermistor is disconnected. Selectwhether the adjustable frequency drive issues a warning oran alarm in F-10 Electronic Overload .TroubleshootingCheck for motor overheating.Check if the motor is mechanically overloaded.When using terminal 53 or 54, check that thethermistor is connected correctly between eitherterminal 53 or 54 (analog voltage input) andterminal 50 (+10 V supply). Also check that theterminal switch for 53 or 54 is set for voltage.Check F-12 Motor Thermistor Input selects terminal53 or 54.When using digital inputs 18 or 19, check thatthe thermistor is connected correctly betweeneither terminal 18 or 19 (digital input PNP only)and terminal 50. Check F-12 Motor ThermistorInput selects terminal 18 or 19.WARNING/ALARM 12, Torque limitThe torque has exceeded the value in F-40 Torque Limiter(Driving) or the value in F-41 Torque Limiter (Braking).SP-25 Trip Delay at Torque Limit can change this from awarning only condition to a warning followed by an alarm.TroubleshootingIf the motor torque limit is exceeded duringramp, extend the ramp time.If the generator torque limit is exceeded duringramp, extend the ramp time.If torque limit occurs while running, possiblyincrease the torque limit. Be sure the system canoperate safely at a higher torque.Check the application for excessive current drawon the motor.WARNING/ALARM 13, Over currentThe inverter peak current limit (approximately 200% of therated current) is exceeded. The warning lasts about 1.5 s,then the adjustable frequency drive trips and issues analarm. This fault may be caused by shock loading or quickacceleration with high inertia loads. It may also appearafter kinetic backup if the acceleration during ramp-up isquick. If extended mechanical brake control is selected, tripcan be reset externally.Warnings and Alarms AF-600 FP Design and Installation GuideDET-768A 9-59 9