5.8 L: Protection Functions
YASKAWA ELECTRIC SIEP C710616 38F YASKAWA AC Drive - L1000A Technical Manual 231
◆ L5: Automatic Fault Reset
After a fault has occurred, Fault Restart attempts to automatically restart the motor and continue operation instead of
stopping. The inverter can reset faults automatically. The maximum number of resets can be selected as well as the
operation mode of the fault relay.
WARNING! Sudden Movement Hazard. Do not use the fault reset function in lifting applications. Fault reset may cause the machine to
drop the load, which could result in death or serious injury.
Faults Allowing for Automatic Reset
The drive attempts to reset itself after one of the faults listed below has occurred. All other faults will need to be reset
externally.
Fault Reset Time Chart
Parameter L5-01 sets the number of times the drive can attempt to reset itself after one of the faults in the table above
occurs. The time chart below illustrates how fault reset works.
Figure 5.39
Figure 5.39 Fault Reset Time Chart
<1> The drive will accept an auto reset signal once the Up and Down commands have been removed.
<2> Software baseblock (H1- = 8, or 9) can also be used instead of Safe Disable inputs
Use parameter L5-06 to set up automatic fault reset.
To output a signal during fault reset, set one of the output terminals to “Reset enabled” (H2- = 1E).
■
L5-01: Number of Auto Reset Attempts
Sets the number of times that the drive may attempt to reset itself.
The drive will continuously attempt to reset. If it resets successfully, the reset counter is increased. This operation is
repeated each time a fault occurs.
When the counter reaches the number set in L5-01, the operation stops and the fault has to be reset manually after
correcting the cause.
Fault Name Fault Name
GF Ground Fault ov DC Bus Overvoltage
LF Output Phase Loss rr Braking Transistor Fault
oC Overcurrent UL3 Undertorque Detection 1
oH1 Heatsink Overheat UL4 Undertorque Detection 2
oL1 Motor Overload SE1 Sequence Error 1
oL2 Drive Overload SE2 Sequence Error 2
oL3 Overtorque Detection 1 SE3 Sequence Error 3
oL4 Overtorque Detection 2 ––
Up or Down command
DC Injection/
Position Lock
Safe Disable Inputs (H1-HC, H2-HC)
<2>
Brake Control (H2- = 50)
DC Injection/
Position Lock
Fault (H2- = E)
Fault
Auto Reset
<1>
Output Speed
SIEP_C710616_38F_5_0.book 231 ページ ２０１５年１１月９日 月曜日 午後３時３６分
To Next Page
Loading...
