L5: Fault Restart - YASKAWA HV600 Technical Reference

5.8 L: Protection Functions
■
L4-06: Frequency Reference @Loss of Ref
No.
Name
(Hex.)
L4-06 Frequency Reference @Loss
of Ref
(04C2)
Set L4-05 = 1 [FreqReference Loss Detect Select = Run@L4-06PrevRef] to enable this parameter.
■
L4-07: Speed Agree Detection Selection
No.
Name
(Hex.)
L4-07 Speed Agree Detection
Selection
(0470)
0 : No Detection during Baseblock
Detects the frequency while the drive is operating. When the drive turns off its output, it will not detect frequency.
1 : Detection Always Enabled
◆

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
Contact at Restart Select] to select the operation of fault relay signals during Auto Restart operation.
The Auto Restart function sets the drive to try to automatically restart the drive a set number of times 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 it detects these faults:
Note:
You can disable Auto Restart for faults if you must not restart the machine after the fault.
Fault Name
Modbus Communication Error
CE
FDBKL WIRE Break
Ground Fault
GF
High Feedback Sensed
HFB
Output Phase Loss
LF
Low Feedback Sensed
LFB
LOP Loss of Prime
Setpoint Not Met
NMS
Overcurrent
oC
Heatsink Overheat
oH1
*1 Uv1 is the target for the auto restart process when L2-01 = 1 or 2 [Power Loss Ride Through Select = Enabled for L2-02 Time or Enabled
while CPU Power Active].
330
Sets the frequency reference as a percentage to continue drive operation after it detects a frequency
reference loss. The value is a percentage of the frequency reference before the drive detected the loss.
Sets the condition that activates speed detection.
Table 5.46 List of Faults during which Auto Restart is Available
Parameters to Disable Auto
Restart
H5-36
L5-42
L5-08
L5-41
-
L5-40
L5-51
L5-50
-
L5-08
Description
Description
Fault Name
Motor Overload
oL1
oL2 Drive Overload
Overtorque Detection 1
oL3
Overtorque Detection 2
oL4
Overvoltage
ov
Input Phase Loss
PF
STPo Motor Step-Out Detected
DC Bus Undervoltage
Uv1
Thermostat Fault
VLTS
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
Default
(Range)
80.0%
(0.0 - 100.0%)
Default
(Range)
0
(0, 1)
Parameters to Disable Auto
Restart
L5-07
L5-07
L5-07
L5-07
L5-08
-
-
*1
L5-08
L5-53