Parameter Details
12
12.7 L: Protection Functions
YASKAWA SIEPYEULA5001C LA500 Technical Manual 333
The drive can do a self-diagnostic check and continue the operation after a fault. If the cause of the fault goes
away, the drive does speed search and restarts. It will not stop and the drive will not record a fault history. Use L5-
02 [Fault Contact at Restart Select] to select the operation of fault relay signals during Auto Restart operation.
Sets if the drive will do Auto Restart and the number of times the drive will try to do Auto Restart in a set time. If
the number of Auto Restart tries is more than the set value during the set time, drive output shuts off and operation
stops. If this happens, remove the cause of the fault and manually restart the drive.
WARNING! Sudden Movement Hazard. Check the application condition in advance before you use the fault restart function.
Failure to obey can cause death or serious injury.
The drive can do Auto Restart when these faults occur:
Table 12.9 List of Faults during which Auto Restart is Available
Fault Name
Parameters to Disable
Auto Restart
GF Ground Fault L5-08
LF Output Phase Loss -
oC Overcurrent -
oH1 Heatsink Overheat L5-08
oL1 Motor Overload L5-07
oL2 Drive Overload L5-07
oL3 Overtorque Detection 1 L5-07
oL4 Overtorque Detection 2 L5-07
Fault Name
Parameters to Disable
Auto Restart
ov Overvoltage L5-08
rr Dynamic Braking
Transistor Fault
-
SE1 Sequence Error 1 -
SE2 Sequence Error 2 -
SE3 Sequence Error -
UL3 Undertorque Detection 1 -
UL4 Undertorque Detection 2 -
■ L5-01: Number of Auto-Restart Attempts
No.
(Hex.)
Name Description
Default
(Range)
L5-01
(049E)
Number of Auto-Restart
Attempts
Sets the number of times that the drive will try to restart.
2
(0 - 10 times)
The drive resets the number of Auto Restart attempts to 0 in these conditions:
• The drive operates correctly for 10 minutes after a fault restart.
• When you manually clear a fault after the drive triggers protective functions.
• When you re-energize the drive.
■ L5-02: Fault Contact at Restart Select
No.
(Hex.)
Name Description
Default
(Range)
L5-02
(049F)
Fault Contact at Restart
Select
Sets the function that sends signals to the MFDO terminal set for Fault [H2-xx = E] while the
drive is automatically restarting.
1
(0, 1)
0 : Active Only when Not Restarting
1 : Always Active
■ L5-04: Interval Method Restart Time
No.
(Hex.)
Name Description
Default
(Range)
L5-04
(046C)
Interval Method Restart
Time
Sets the time interval between each Auto Restart attempt. This function is enabled when L5-05 =
1 [Auto Restart Operation Selection = Use L5-04 Time].
10.0 s
(0.5 - 600.0 s)
■ L5-06: Undervoltage Fault Restart Selection
No.
(Hex.)
Name Description
Default
(Range)
L5-06
(046E)
Undervoltage Fault Restart
Selection
Determines whether a limit should be placed on the number of reset attempts after a Uv1 fault.
0
(0, 1)
0 : Restrict auto-reset attempts to L5-01 after Uv1
1 : No Limit on auto-reset attempts to L5-01
To Next Page
Loading...
