‹ General Faults and Alarms Faults and Alarms indicate unsusal inverter / application conditions. An alarm does not necessarily switch off the inverter but a message is displayed on the keypad (i.e. a flashing alarm code) and an alarm output can be generated at the multi-function outputs (H2-01 and H2-02) if programmed. An alarm automatically disappears if the alarm condition is not present anymore. A fault switches the inverter output off immediately, a message is displayed on the keypad and the fault output is switched. The fault must be reset manually after the cause and the RUN signal have been removed. The following table shows a list of faults and alarms with their corrective actions.
EN-21 Display Alarm Fault Meaning Corrective Actions BUS Option Com Err Option Card Communication Alarm After initial communication was established, the connection was lost. Check the connections and all user-side soft- ware configurations. CF Out of Control Control Fault A torque limit was reached continuously for 3 seconds or longer during a deceleration stop in Open Loop Vector control Check the motor parameters CPF00 COM- ERR(OP&INV) Digital Operator Communication Fault 1/2 • Communication fault between Operator and Inverter • CPU External RAM Fault • Disconnect the Digital Operator and then connect it again. • Cycle the Inverter power supply. • Replace the Inverter.
CPF01 COM- ERR(OP&INV) CPF02 BB Circuit Err CPF02 Fault Baseblock circuit error • Perform an initialization to factory defaults. • Cycle the Inverter power supply. • Replace the Inverter. CPF03 EEPROM Error CPF03 EEPROM error CPF04 INternal A/D Err CPF04 CPU Internal A/D Converter Fault DEV Speed Deviation F1-04 = 0, 1 or 2 and A1-02 = 1 or 3 The speed deviation has been greater than the setting in F1-10 for a time longer than the setting F1-11. • Reduce the load. • Lengthen the acceleration and deceleration time • Check the mechanical system • Check the settings of F1-10 and F1-11 • Check the sequence and if the brake is opened when the inverter starts to increase the speed.
F1-04 = 3 and A1-02 = 1 or 3 The speed deviation has been greater than the setting in F1-10 for a time longer than the setting F1-11. EF External Fault Forward/Reverse Run Commands Input Together Both the forward and the reverse run commands are input simultaneously for 500ms or more. This alarm stops the motor. Check external sequence logic, so that only one input is activated at a time. EF0 Opt External Flt External fault input from Communications Option Card • Check for an external fault condition. • Verify the parameters.
• Verify communication signals EFx Ext Fault Sx External fault at terminal Sx (x stands for termi- nals S3 to S7) Eliminate the cause of the external fault con- dition. Ext Run Active Cannot Reset Detected after a fault when a RESET command is input while the RUN command is still active Remove the RUN signal first and reset the error. GF Ground Fault Ground Fault The ground current at the Inverter output exceeded 50% of the Inverter rated output cur- rent and L8-09=1 (Enabled). • Remove the motor and run the Inverter without the motor. • Check the motor for a phase to ground short. • Check the output current with a clampmeter to verify the DCCT reading.
• Check the control sequence for wrong motor contactor signals.