Yaskawa AC Drive-L1000E Safety Precautions - Manual (Page 41)

8 Troubleshooting
YASKAWA TOEP YAIL1E 02A YASKAWA AC Drive - L1000E Safety Precautions 41
‹ Fault Reset Methods
When a fault occurs, the cause of the fault must be removed and the drive must be restarted. The table below lists the
different ways to restart the drive.
Note: If the Up/Down command is present, the drive will disregard any attempts to reset the fault. Remove the Up/Down command
before attempting to clear a fault situation.
Other Fault
LF O
Output Phase Loss
• Phase loss on the output side of the drive.
• Setting L8-07 to 1 or 2 enables Phase Loss Detection.
LF2 O
Output Current Imbalance (detected when L8-29 = 1)
One or more of the phases in the output current is lost.
ALARM(RUN)
Other Fault
oS O O
Overspeed (for Control Mode with Encoder)
The motor speed feedback exceeded the F1-08 setting.
Other Fault
PF O
Input Phase Loss
Drive input power has an open phase or has a large imbalance of voltage between phases.
Detected when L8-05 = 1 (enabled).
PF5 O Rescue Operation Power Supply Deterioration Error
rF O
Braking Resistor Fault
The resistance of the braking resistor being used is too low.
rr O
Dynamic Braking Transistor Fault
The built-in dynamic braking transistor failed.
SvE O
Position Lock Error
Position deviation during Position Lock.
STo O
Motor Pull Out or Step Out Detection
Motor pull out or step out has occurred. Motor has exceeded its pull out torque.
ALARM(RUN)
Other Fault
UL3 O O
Undertorque Detection 1
Drive output current (or torque in OLV, CLV, CLV/PM) less than L6-02 for longer than L6-
03 time.
UL4 O O
Undertorque Detection 2
Drive output current (or torque in OLV, CLV, CLV/PM) less than L6-05 for longer than L6-
06 time.
<1> The Fault/Alarm Code is only visible with the optional JVOP -180 digital operator.
After the Fault Occurs Procedure
Fix the cause of the fault, restart the
drive, and reset the fault.
Resetting via Fault Reset Digital
Input S4
Close then open the fault signal digital input via
terminal S4. S4 is set for “Fault Reset” as
default (H1-04 = 14).
If the above methods do not reset the fault, turn off the drive main power supply.
Reapply power after the digital operator display is out.
JVOP-184
Status Text
ALARM
FAULT
Fault/Alarm
Code <1>
ALM FLT Fault Name/Cause
Fault Reset Switch
Drive
S4 Fault Reset Digital Input
SC Digital Input Common
ON
OFF
2
1