6.3 Drive Alarms, Faults, and Errors
YASKAWA ELECTRIC SIEP C710616 35D YASKAWA AC Drive E1000 Technical Manual 261
◆ Alarm and Error Displays
■ Faults
Table 6.5 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 fault
contact 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 262 for a list of alarm codes.
Table 6.5 Fault Displays
Digital Operator Display Name Page Digital Operator Display Name Page
boL Braking Transistor Overload Fault 265 oFA00 Option Card Connection Error (CN5-A) 269
bUS Option Communication Error 265 oFA01 Option Card Fault (CN5-A) 269
CE
MEMOBUS/Modbus Communication
Error
265
to
oFA03 to oFA06 Option Card Error (CN5-A) 270
,
<1>
CPF00, CPF01 Control Circuit Error 265
,
oFA10, oFA11 Option Card Error (CN5-A) 270
CPF02 A/D Conversion Error 265
CPF03 Control Board Connection Error 265
to
oFA12 to oFA17 Option Card Connection Error (CN5-A) 270
CPF06 EEPROM Memory Data Error 266
,
CPF07,
CPF08
Terminal Board Connection Error 266
to
oFA30 to oFA43
Comm Option Card Connection Error
(CN5-A)
270
,
<1>
CPF20, CPF21 Control Circuit Error 266
oFb00 Option Card Connection Error (CN5-B) 270
oFC00 Option Card Connection Error (CN5-C) 270
CPF22 Hybrid IC Error 266 oH Heatsink Overheat 270
CPF23 Control Board Connection Error 266 oH1 Heatsink Overheat 270
CPF24 Drive Unit Signal Fault 266 oH3 Motor Overheat Alarm (PTC input) 270
CPF25 Terminal Board not Connected 266 oH4 Motor Overheat Fault (PTC input) 271
to
to
<2>
CPF26 to CPF35,
CPF40 to CPF45
Control Circuit Error 266
<2>
oH5 Motor Overheat (NTC Input) 271
oL1 Motor Overload 271
oL2 Drive Overload 271
oL3 Overtorque Detection 1 271
<3>
dv7 Polarity Judge Timeout 266 oL7 High Slip Braking oL 272
dWFL DriveWorksEZ Fault 266 oPr Operator Connection Fault 272
E5 SI-T3 Watchdog Timer Error 267 ov Overvoltage 272
EF0 Option Card External Fault 267 PF Input Phase Loss 272
to
EF1 to EF8 External Fault (input terminal S1 to S8) 267
<3>
SC
IGBT Upper Arm and Lower Arm Short
Circuit
273
SEr Too Many Speed Search Restarts 273
Err EEPROM Write Error 267 STo Pull-Out Detection 273
FAn Internal Fan Fault 267
<2>
THo Thermistor Disconnect 279
FbH Excessive PI Feedback 267 UL3 Undertorque Detection 1 273
FbL PI Feedback Loss 268 UL6 Motor Underload 273
GF Ground Fault 268
<2>
UnbC Current Unbalance 273
LF Output Phase Loss 268 Uv1 Undervoltage 273
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