L5: Fault Restart - Omron Q2V Series Technical Manual

12.8 L: PROTECTION
Register No.
Drive Status 2
bit2
bit3
002CH
bit4
bit5
U1-12 [Drive Status]
004BH
bit4
• When you use these functions for monitor parameters:
No.
(Hex.)
U1-12 Drive Status
(004B)
◆

L5: FAULT RESTART

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@Reset 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 faults if you must not restart the machine after the fault.
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 [RideThru@PwrLoss = Enabled], and L2-50 = 0, 1, 2, 3
[RidThruMode@PwrLoss = Timer Controlled, While CPU Active, KEB Mode, KEB Stop Mode].
■
L5-01: Auto-Reset Attempts
No.
Name
(Hex.)
L5-01 Auto-Reset 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.
658
Speed agreement
1: During agreement
User-defined speed agreement
1: During agreement
Frequency Detection 1
1: Output frequency ≤ L4-01
Frequency Detection 2
1: Output frequency ≥ L4-01
1: During speed agreement
Name
Table 12.52 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 OLV OLV/PM AOLV/PM EZOLV OLV/PM
Sets the number of times that the drive will try to restart.
Description
bit 4: During speed agreement
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
SIEPCYEUOQ2V01A Q2V Technical Manual
Description
Parameters to Disable
Name
Auto Restart
L5-08
-
-
-
-
*1
L5-08
Default
(Range)
0
(0 - 10 times)