Alarm Register Contents - YASKAWA A1000 Technical Manual

C.9 MEMOBUS/Modbus Data Table
 Alarm Register Contents
The table below shows the alarm codes that can be read out from MEMOBUS/Modbus register 007FH.
Alarm Code
0001H Undervoltage (Uv)
0002H Drive Overheat Warning (ov)
0003H Heatsink Overheat (oH)
0004H Drive Overheat Warning (oH2)
0005H Overtorque 1 (oL3)
0006H Overtorque 2 (oL4)
0007H Run commands input error (EF)
0008H Drive Baseblock (bb)
0009H External Fault 3, input terminal S3 (EF3)
000AH External Fault 4, input terminal S4 (EF4)
000BH External Fault 5, input terminal S5 (EF5)
000CH External Fault 6, input terminal S6 (EF6)
000DH External Fault 7, input terminal S7 (EF7)
000EH External Fault 8, input terminal S8 (EF8)
000FH Internal Fan Fault (FAn)
0010H Overspeed (oS)
0011H Speed Deviation (dEv)
0012H PG Disconnected (PGo)
0014H MEMOBUS/Modbus Communication Error (CE)
0015H Option Communication Error (bUS)
0016H Serial Communication Transmission Error (CALL)
0017H Motor Overload (oL1)
0018H Drive Overload (oL2)
001AH Option Card External Fault (EF0)
001BH Motor Switch command input during run (rUn)
001DH Serial Communication Transmission Error (CALL)
001EH Undertorque Detection 1 (UL3)
001FH Undertorque Detection 2 (UL4)
0020H MEMOBUS/Modbus Communication Test Mode Error (SE)
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Table C.6 Alarm Register 007FH Contents
Fault Name
YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
Alarm Code
0022H Motor Overheat (oH3)
0027H PID Feedback Loss (FbL)
0028H PID Feedback Loss (FbH)
002AH Drive Disabled (dnE)
002BH PG Disconnected (PGo)
0031H MECHATROLINK Watchdog Timer Error (E5)
0032H Station Address Setting Error (AEr)
0033H MECHATROLINK Comm. Cycle Setting Error (CyC)
0034H High Current Alarm (HCA)
0035H Cooling Fan Maintenance Time (LT-1)
0036H Capacitor Maintenance Time (LT-2)
0038H SI-S EEPROM Error (EEP)
0039H External Fault (input terminal S1) (EF1)
003AH External Fault (input terminal S2) (EF2)
003BH Safe Disable Input (HbbF)
003CH Safe Disable Input (Hbb)
003DH Mechanical Weakening Detection 1 (oL5)
003EH Mechanical Weakening Detection 2 (UL5)
003FH PLC Alarm (PA1)
0040H PLC Alarm (PA2)
0041H Output Voltage Detection Fault (voF)
0042H IGBT Maintenance Time (90%) (TrPC)
0043H Soft Charge Bypass Relay Maintenance Time (LT-3)
0044H IGBT Maintenance Time (50%) (LT-4)
0045H Braking Transistor Overload (boL)
0048H Motor Overheat (NTC Input) (oH5)
0049H DriveWorksEZ Fault (dWAL)
004DH Thermistor Disconnect (THo)
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Fault Name
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