6.3 Drive Alarms, Faults, and ErrorsYASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual 331Troubleshooting6 Alarm and Error Displays FaultsTable 6.9 gives an overview of possible fault codes. As conditions such as overvoltage can trip both a fault and an alarm,it is important to distinguish between faults and alarms in order to find the right corrective action.When the drive detects a fault, the ALM indicator LEDs lights and the fault code appears on the display. The drive faultcontact MA-MB-MC will be triggered. If the ALM LED blinks and the code appearing on the operator screen is flashes,then an alarm has been detected. See Minor Faults and Alarms on page 333 for a list of alarm codes.Table 6.9 Fault Displays (1)Digital Operator Display Name Page Digital Operator Display Name PageLED Operator LCD Operator LED Operator LCD OperatorboL Braking Transistor Overload Fault 336 dv2 Z Pulse Noise Fault Detection 339bUS Option Communication Error 336 dv3 Inversion Detection 339CE MEMOBUS/Modbus CommunicationError 336 dv4 Inversion Prevention Detection 339CF Control Fault 336 dv7 Polarity Judge Timeout 339CoF Current Offset Fault 336 , dWAL,dWFL DriveWorksEZ Fault 339,<1>CPF00, CPF01 Control Circuit Error 337dWF1 EEPROM Memory DriveWorksEZ DataError 339CPF02 A/D Conversion Error 337 E5 MECHATROLINK Watchdog Timer Error 340CPF03 Control Board Connection Error 337 EF0 Option Card External Fault 340<4> CPF06 EEPROM Memory Data Error 337 to EF1 to EF8 External Fault (input terminal S1 to S8) 340, CPF07,CPF08 Terminal Board Connection Error 337Err EEPROM Write Error 340CPF11 RAM Fault 337 FAn Internal Fan Fault 340CPF12 FLASH Memory Fault 337 FbH Excessive PID Feedback 340CPF13 Watchdog Circuit Exception 337 FbL PID Feedback Loss 341CPF14 Control Circuit Fault 337 GF Ground Fault 341CPF16 Clock Fault 337 LF Output Phase Loss 341CPF17 Timing Fault 338 LF2 Output Current Imbalance 341CPF18 Control Circuit Fault 338 <2> LF3 Power Unit Output Phase Loss 3 341CPF19 Control Circuit Fault 338 LSo LSo Fault 342,<1>CPF20, CPF21 Control Circuit Error 338nSE Node Setup Error 342oC Overcurrent 342CPF22 Hybrid IC Error 338 <4> oFA00 Option Card Connection Error at OptionPort CN5-A 342CPF23 Control Board Connection Error 338 oFA01 Option Card Fault at Option Port CN5-A 343<4> CPF24 Drive Unit Signal Fault 338 to oFA03 to oFA06 Option Card Error Occurred at Option PortCN5-A 343CPF25 Terminal Board not Connected 338to,to<2>CPF26 to CPF35,CPF40 to CPF45 Control Circuit Error 338, oFA10, oFA11 Option Card Error Occurred at Option PortCN5-A 343to oFA12 to oFA17 Option Card Connection Error (CN5-A) 343dEvSpeed Deviation (for Control Mode withPG and PM Open Loop Vector ControlMode without PG)338 to oFA30 to oFA43 Comm. Option Card Connection Error(CN5-A) 343dv1 Z Pulse Fault 339 <4> oFb00 Option Card Fault at Option Port CN5-B 343
