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 (
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
Name
GF
Ground Fault
LF
Output Open Phase
oC
Overcurrent
oH1
Drive Overheat
oL1
Motor Overload
oL2
Drive Overload
oL3
Overtorque 1
oL4
Overtorque 2
Fault
Name
ov
DC Bus Overvoltage
PF
Input Phase Loss
rH
Braking Resistor Fault
rr
Braking Transistor Fault
Uv1
DC Bus Undervoltage
STo
Pull-Out Detection
<1> When L2-01 is set to 0 through 2 (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
<1>
.
<1> Details on this function can be found in the standard Z1000 Programming Manual (SIEPC71061645) at
www.yaskawa.com.
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.
Name
Setting Range
Default
L5-01
Number of Auto Restart Attempts
0 to 10 Times
0 Times
n
L5-02: Auto Restart Fault Output Operation Selection
Determines if a fault output is triggered (H2-
oo
= E) when the drive attempts to restart.
No.
Name
Setting Range
Default
L5-02
Auto Restart Fault Output Operation Selection
0, 1
0
5.9 L: Protection Functions
174
YASKAWA ELECTRIC SIEP YAIZ1B 01E YASKAWA AC Drive – Z1000 Bypass Technical Manual
