YASKAWA GA800 Technical Reference page 987

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.
The drive can do Auto Restart when these faults occur:
Note:
You can disable Auto Restart for some faults if you must not restart the machine after the fault with parameters L5-07 and L5-08.
Fault
GF Ground Fault
LF Output Phase Loss
oC Overcurrent
oH1 Heatsink Overheat
oL1 Motor Overload
oL2 Drive Overload
oL3 Overtorque Detection 1
oL4 Overtorque Detection 2
*1 Uv1 is the target for the auto restart process when L2-01 = 1, 2, 3, or 4 [Power Loss Ride Through Select = Enabled for L2-02 Time,
Enabled while CPU Power Active, Kinetic Energy Backup: L2-02, or Kinetic Energy Backup: CPU Power].
■
L5-01: Number of Auto-Restart Attempts
No.
Name
(Hex.)
L5-01 Number of Auto-Restart
Attempts
(049E)
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.
Name
(Hex.)
L5-02 Fault Contact at Restart
Select
(049F)
0 : Active Only when Not Restarting
1 : Always Active
■
L5-03: Continuous Method Max Restart T
No.
Name
(Hex.)
L5-03 Continuous Method Max
Restart T
(04A0)
YASKAWA SIEPC71061737D GA800 Drive Technical Reference
Table 12.69 List of Faults during which Auto Restart is Available
Parameters to Disable
Name
Auto Restart
L5-08
-
-
L5-08
L5-07
L5-07
L5-07
L5-07
V/f CL-V/f OLV CLV
Sets the number of times that the drive will try to restart.
V/f CL-V/f OLV CLV
Sets the function that sends signals to the MFDO terminal set for Fault [H2-xx = E] while the drive
is automatically restarting.
V/f CL-V/f OLV CLV
Sets the time for which the drive will try to restart. If the drive cannot restart inthe time set in L5-03,
the drive detects a fault. This is available when L5-05 = 0 [Auto-Restart Method = Continuous/
Immediate Attempts].
Fault
ov Overvoltage
PF Input Phase Loss
rH Braking Resistor Overheat
rr Dynamic Braking Transistor
Fault
STPo Motor Step-Out Detected
Uv1 DC Bus Undervoltage
Description
AOLV OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
AOLV OLV/PM OLV/PM AOLV/PM CLV/PM EZOLV
Description
AOLV OLV/PM OLV/PM AOLV/PM CLV/PM EZOLV
12.9 L: Protection Functions
Parameters to Disable
Name
Auto Restart
L5-08
-
-
-
-
*1
L5-08
Default
(Range)
0
(0 - 10 times)
Default
(Range)
0
(0, 1)
Default
(Range)
10.0 s
(0.5 - 180.0 s)
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