Yaskawa G7 Modbus Communication - Manual (Page 79)

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Modbus Fault Decoding for Monitors
The following table provides the fault code data for all G7 faults for Modbus fault trace / fault history registers.
Table 4.17 Modus Fault Decoding Information
For Monitors U2-01, U2-02, U3-01 thru U3-04, and U3-09 thru U3-14
Data Decimal Fault Data Decimal Fault
0001h 1 PUF - DC Bus Fuse Open 0021h 33 CE - Modbus Communication Loss
0002h 2 UV1 - DC Bus Undervoltage 0022h 34 BUS - Option Communication Error
0003h 3 UV2 - CTL PS Undervoltage 0023h 35 E-15 - SI-F/G Communication Error
0004h 4 UV3 - MC Answerback 0024h 36 E-10 - SI-F/G Communication Loss
0005h 5 SC - Short Circuit 0025h 37 CF - Loss of Motor Control
0006h 6 GF - Ground Fault 0026h 38 SVE - Zero Servo Fault
0007h 7 OC - Over Current 0027h 39 EF0 - Option External Fault
0008h 8 OV - DC Bus Overvoltage 0028h 40 FBL - PID Feedback Loss
0009h 9 OH - Heatsink Overtemperature 0029h 41 UL3 - Undertorque Detection 1
000Ah 10 OH1 - Heatsink MAX Temperature 002Ah 42 UL4 - Undertorque Detection 2
000Bh 11 OL1 - Motor Overload 002Bh 43 OL7 - High Slip Braking Overload
000Ch 12 OL2 - Inverter Overload 002Ch 44 EF9 - External Fault S9
000Dh 13 OL3 - Overtorque Detection 1 002Dh 45 EF10 - External Fault S10
000Eh 14 OL4 - Overtorque Detection 2 002Eh 46 EF11 - External Fault S11
000Fh 15 RR - Braking Transistor Failure 002Fh 47 EF12 - External Fault S12
0010h 16 RH - Braking Resistor Overheat 0030h 48 Reserved
0011h 17 EF3 - External Fault S3 0031h 49 VCN - Neutral Point Detection
0012h 18 EF4 - External Fault S4 0032h 50 Reserved
0013h 19 EF5 - External Fault S5 0033h 51 Reserved
0014h 20 EF6 - External Fault S6 0034h 52 Reserved
0015h 21 EF7 - External Fault S7 0035h 53 Reserved
0016h 22 EF8 - External Fault S8 0036h 54 Reserved
0017h 23 Reserved 0037h 55 Reserved
0018h 24 OS - Overspeed 0038h 56 PGOH - Encoder (PG) Loss
0019h 25 DEV - Speed Deviation 0039h 57 E-5 - SI-T Communication Loss
001Ah 26 PGO - Encoder (PG) Loss 003Ah 58 CF2 - Loss of Motor Control 2
001Bh 27 PF - Input Phase Loss 003Bh 59 SER - Speed Search Error
001Ch 28 LF - Output Phase Loss 003Ch 60 CFAL1 - CASE Fault 1*
001Dh 29 OH3 - Motor Overheat 1 003Dh 61 CFAL2 - CASE Fault 2*
001Eh 30 OPR - Operator Disconnected 003Eh 62 CFAL3 - CASE Fault 3*
001Fh 31 ERR - EEPROM Read/Write Error 003Fh 63 CFAL4 - CASE Fault 4*
0020h 32 OH4 - Motor Overheat 2 0040h 64 CFAL5 - CASE Fault 5*
* For drives with custom (CASE) software, the fault text could be different.