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
Fault
Name
oL3
Overtorque 1
oL4
Overtorque 2
ov
DC Bus Overvoltage
PF
Input Phase Loss
STo
Pull-Out Detection
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.
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
1.8 L: Protection Functions
118
YASKAWA ELECTRIC SIEP C710636 10C Z1000U HVAC MATRIX Drive Programming Manual