Yaskawa AC Drive Z1000 AC Drive HVAC Fan - Manual (Page 112)

Fault Name
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
Uv1 DC Bus Undervoltage <1>
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.
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
Setting 0: No Fault Output
Auto-Restart - Cancel Early
Fault output disabled (L5-02 = 0)
Run command
Fault condition
Fault display
Fault digital output
Output Frequency
(U1-02)
L5-04
Figure 1.66 Auto Restart Cancel Early
1.8 L: Protection Functions
112 YASKAWA ELECTRIC SIEP YAIZ1U 03A YASKAWA AC Drive – Z1000 Programming Manual