The Auto Restart function tries to keep machines operating when the drive detects a transient fault.
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
Do not use the fault restart function in hoist or lifting applications.
Failure to obey can cause death or serious injury.
|
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.
Table 1. 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
|
|
ov
|
Overvoltage
|
L5-08
|
|
PF
|
Input Phase Loss
|
-
|
|
rH
|
Braking Resistor Overheat
|
-
|
|
rr
|
Dynamic Braking Transistor Fault
|
-
|
|
STPo
|
Motor Step-Out Detected
|
-
|
|
Uv1
|
DC Bus Undervoltage1
|
L5-08
|
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].