5.8 L: Protection Functions
196 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
To have a fault output trigger when frequency reference loss occurs, set H2-01, H2-02, or H2-03 to “C”. Refer to Setting
C: Frequency Reference Loss on page 172 for details on setting the output function.
Parameter L4-05 selects the operation when a frequency reference loss is detected.
Setting 0: Stop
The drive will stop the motor.
Setting 1: Continue Operation with Reduced Frequency Reference
The drive will continue operation at the frequency reference value set in parameter L4-06. When the external frequency
reference value is restored, the operation is continued with the frequency reference.
■
L4-06: Frequency Reference at Reference Loss
Sets the frequency reference level the drive runs with when L4-05 = 1 and a reference loss was detected. The value is set
as a percentage of the frequency reference before the loss was detected.
■
L4-07: Speed Agreement Detection Selection
Determines when frequency detection is active using parameters L4-01 through L4-04.
Setting 0: No Detection During Baseblock
Setting 1: Detection Always Enabled
◆ L5: Fault Restart
The drive can be set up to 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 performing Speed Search (Refer to
b3: Speed Search on page 115 for details).
The drive can attempt to restart itself following the faults listed below.
Use parameters L5-01 to L5-05 to set up automatic fault restart.
To output a signal during fault restart, set H2-01, H2-02, or H2-03 to 1E.
■
L5-01: Number of Auto Restart Attempts
Sets the number of times that the drive may attempt to restart itself.
No. Name Setting Range Default
L4-05 Frequency Reference Loss Detection Selection 0 or 1 0
No. Name Setting Range Default
L4-06 Frequency Reference at Reference Loss 0.0 to 100.0% 80.0%
No. Name Setting Range Default
L4-07 Speed Agreement Detection Selection 0 or 1 0
Fault Name Fault Name
GF (Ground Fault) oL4 (Overtorque 2)
LF (Output Open Phase) ov (DC Bus Overvoltage)
oC (Overcurrent) PF (Input Phase Loss)
oH1 (Drive Overheat) rH (Braking Resistor Fault)
oL1 (Motor Overload) rr (Braking Transistor Fault)
oL2 (Drive Overload) Uv1
<1> When L2-01 is set to 1 or 2 (continue operation during momentary power loss)
(DC Bus Undervoltage) <1>
oL3 (Overtorque 1)
No. Name Setting Range Default
L5-01 Number of Auto Restart Attempts 0 to 10 0
To Next Page
Loading...
