5.3 Types of Faults, Alarms, and Errors
YASKAWA ELECTRIC EZZ010928 FSDrive-MV1000 Instructions 115
Table 5.7 Fault Displays (2)
■ Minor Faults and Alarms
If an alarm is detected, the ALM LED will blink and the alarm code display flashes. If the ALM LED lights without
blinking, this means that a fault has been detected (not an alarm). Information on fault codes can be found in Faults
(Drive Faults and Power Cell Faults) on page 114.
Table 5.8 Minor Fault and Alarm Displays
Digital Operator
Display
<1> The number of the Power Cell at which the fault has occurred is indicated at “nn”.
<2> When a fault occurred at the startup of the drive, CPF00 or CPF20 is displayed. When a fault occurred during operation, CPF01 or
CPF21 is displayed.
Name Page
Digital Operator
Display
Name Page
PGoH
PG Hardware Fault
(detected when using a PG-X3
option card)
127
TME2 Transformer Temperature DI Fault 128
UL3 Undertorque Detection 1 128
UL4 Undertorque Detection 2 128
SEr Too Many Speed Search Restarts 128 UL5 Mechanical Weakening Detection 2 129
TME Transformer Temperature Fault 128 Uv1 Undervoltage 129
TME1 Transformer Temperature Fault 1 128 VUB Voltage Unbalance 129
Digital Operator
Display
Name
Minor Fault Output
(H2- = 10)
Page
BAT Battery Voltage Low Yes 130
bb Drive Baseblock (Voltage) No 130
bUS Option Communication Error Yes 130
CALL Serial Communication Transmission Error Yes 131
CE MEMOBUS/Modbus Communication Error Yes 131
CrST Cannot Reset No 131
dEv Speed Deviation (for Control Mode with PG) Yes 131
dnE Drive Disabled Yes 132
EF Forward/Reverse Run Command Input Error Yes 132
EF0 Option Card External Fault Yes 132
EF1
to
EF16
External Fault (input terminal) Yes 132
FAn Fan Fault Yes 133
FbH Excessive PID Feedback Yes 133
FbL PID Feedback Loss Yes 133
IOV Input Overvoltage Yes 133
oH IGBT Overheating No 134
oH2 Drive Overheat Warning Yes 134
oL1 Motor Overload Yes 134
oL2 Drive Overload Yes 135
oL3 Overtorque 1 Yes 135
oL4 Overtorque 2 Yes 135
oL5 Mechanical Weakening Detection 1 Yes 135
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