L5: Fault Restart - YASKAWA P1000 Technical Manual

5.8 L: Protection Functions
n L4-06: Frequency Reference at Reference Loss
Sets the frequency reference level at which the drive runs when L4-05 = 1 and when detecting a reference loss. The value is
set as a percentage of the frequency reference before the loss was detected.
No.
L4-06
n L4-07: Speed Agree Detection Selection
Determines when frequency detection is active using parameters L4-01 through L4-04.
No.
L4-07
Setting 0: No Detection during baseblock
Setting 1: Detection always enabled
u

L5: Fault Restart

After a fault has occurred, Fault Restart attempts to automatically restart the motor and continue operation instead of stopping.
The drive can perform a self-diagnostic check and resume the operation after a fault has occurred. If the self-check is successful
and the cause of the fault has disappeared, the drive restarts by first performing Speed Search
page 153 for details).
Note: 1. The wiring sequence should remove the Forward/Reverse command when a fault is triggered and output is shut off.
2. When the Forward/Reverse command is removed, the drive can perform a self-diagnostic check and attempt to restart the fault
automatically.
WARNING! Sudden Movement Hazard. Do not use the fault restart function in lifting applications. Fault restart may cause the machine to
drop the load, which could result in death or serious injury.
The drive can attempt to restart itself following the faults listed below.
Fault
GF
LF
oC
oH1
oL1
oL2
oL3
<1> When L2-01 is set to 1 through 4 (continue operation during momentary power loss)
Use parameters L5-01 to L5-05 to set up automatic fault restart.
Set H2-01, H2-02, or H2-03 to 1E. to output a signal during fault restart.
n L5-01: Number of Auto Restart Attempts
Sets the number of times that the drive may attempt to restart itself.
Parameter L5-05 determines the method of incrementing the restart counter. When the counter reaches the number set to L5-01,
the operation stops and the fault must be manually cleared and reset.
The restart counter is incremented at each restart attempt, regardless of whether the attempt was successful. When the counter
reaches the number set to L5-01, the operation stops and the fault must be manually cleared and reset.
The number of fault restarts is reset to zero when:
• The drive operates normally for 10 minutes following a fault restart.
• A fault is cleared manually after protective functions are triggered.
• The power supply is cycled.
No.
L5-01
254
Name
Frequency Reference at Reference Loss
Name
Speed Agree Detection Selection
Name
Ground Fault
Output Open Phase
Overcurrent
Drive Overheat
Motor Overload
Drive Overload
Overtorque 1
Name
Number of Auto Restart Attempts
Setting Range
0.0 to 100.0%
Setting Range
0, 1
Fault
oL4
ov
PF
rH Braking Resistor Fault
rr Braking Transistor Fault
Uv1
DC Bus Undervoltage
Setting Range
0 to 10 Times
YASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual
Default
80.0%
Default
0
(Refer to b3: Speed Search on
Name
Overtorque 2
DC Bus Overvoltage
Input Phase Loss
<1>
Default
0 Times