Yaskawa U1000 Industrial MATRIX Drive - Manual (Page 68)

Digital Operator Display Fault Name
LF2
Output Current Imbalance
One or more of the phases in the output current are lost.
<4>
LSo
LSo Fault
Pull-out has been detected at low speed.
nSE
Node Setup Error
A terminal assigned to the node setup function closed during run.
oC
Overcurrent
Drive sensors detected an output current greater than the specified overcurrent level.
oFA00
Option Card Connection Error at Option Port CN5-A
Option compatibility error
oFA01
Option Card Fault at Option Port CN5-A
Option not properly connected
to oFA02 to oFA06
Option Card Error Occurred at Option Port CN5-A
, oFA10, oFA11
to oFA12 to oFA17 Option Card Connection Error (CN5-A)
to oFA30 to oFA43 Communication Option Card Connection Error (CN5-A)
oFb00
Option Card Fault at Option Port CN5-B
Option compatibility error
oFb01
Option Card Fault at Option Port CN5-B
Option not properly connected
oFb02
Option Card Fault at Option Port CN5-B
Same type of option card is currently connected
to oFb03 to oFb11
Option card error occurred at Option Port CN5-B
to oFb12 to oFb17
oFC00
Option Card Connection Error at Option Port CN5-C
Option compatibility error
oFC01
Option Card Fault at Option Port CN5-C
Option not properly connected
oFC02
Option Card Fault at Option Port CN5-C
Same type of option card is currently connected
to oFC03 to oFC11
Option Card Error Occurred at Option Port CN5-C
to oFC12 to oFC17
to oFC50 to oFC55 Option Card Error Occurred at Option Port CN5-C
oH
Heatsink Overheat
The heatsink temperature exceeded the overheat pre-alarm level set to L8-02. The default value for L8-02
is determined by drive model selection (o2-04).
oH1
Overheat 1 (Heatsink Overheat)
The heatsink temperature exceeded the drive overheat level. Overheat level is determined by drive
capacity (o2-04).
oH3
Motor Overheat Alarm (PTC Input)
• The motor overheat signal to analog input terminal A1, A2, or A3 exceeded the alarm detection level.
• Detection requires setting multi-function analog inputs H3-02, H3-10, or H3-06 to E.
oH4
Motor Overheat Fault (PTC Input)
• The motor overheat signal to analog input terminal A1, A2, or A3 exceeded the fault detection level.
• Detection requires setting multi-function analog inputs H3-02, H3-10, or H3-06 to E.
oL1
Motor Overload
The electronic motor overload protection tripped
oL2
Drive Overload
The thermal sensor of the drive triggered overload protection.
i.6 Troubleshooting
68 YASKAWA ELECTRIC TOEP C710636 04C U1000 Industrial MATRIX Drive Quick Start Guide