YASKAWA HV600, Technical Reference

Page: 330 / 794

5.8 L: Protection Functions
330 YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference
■
L4-06: Frequency Reference @Loss of Ref
No.
(Hex.)
Name Description
Default
(Range)
L4-06
(04C2)
Frequency Reference @Loss
of Ref 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. 80.0%
(0.0 - 100.0%)
Set L4-05 = 1 [FreqReference Loss Detect Select = Run@L4-06PrevRef] to enable this parameter.
■
L4-07: Speed Agree Detection Selection
No.
(Hex.)
Name Description
Default
(Range)
L4-07
(0470)
Speed Agree Detection
Selection Sets the condition that activates speed detection. 0
(0, 1)
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.
Table 5.46 List of Faults during which Auto Restart is Available
Fault Name
Parameters to Disable Auto
Restart
CE
Modbus Communication Error
H5-36
FDBKL WIRE Break L5-42
GF
Ground Fault
L5-08
HFB
High Feedback Sensed
L5-41
LF
Output Phase Loss
-
LFB Low Feedback Sensed L5-40
LOP
Loss of Prime
L5-51
NMS
Setpoint Not Met
L5-50
oC
Overcurrent
-
oH1 Heatsink Overheat L5-08
Fault Name
Parameters to Disable Auto
Restart
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 -
STPo
Motor Step-Out Detected
-
Uv1
DC Bus Undervoltage
*1
L5-08
VLTS
Thermostat Fault
L5-53
*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] .