L5: Fault Restart - YASKAWA CIMR-VU BA0001 Technical Manual

5.8 L: Protection Functions
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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
Search on page 130 for details).
The drive can attempt to restart itself following the faults listed below.
Setting
GF (Ground Fault)
LF (Output Open Phase)
oC (Overcurrent)
oH1 (Drive Overheat)
oL1 (Motor Overload)
oL2 (Drive Overload)
oL3 (Overtorque 1)
oL4 (Overtorque 2)
<1> When L2-01 is set to 1 or 2 (continue operation during momentary power loss)
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.
Do not use the fault restart function in elevator applications.
n L5-01: Number of Auto Restart Attempts
Sets the number of times that the drive may attempt to restart itself.
No.
L5-01
The method of incrementing the restart counter is determined by the setting of parameter L5-05. 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.
The restart counter is incremented at each restart attempt, regardless of whether the attempt was successful. 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.
The number of fault restarts is reset back to zero when:
• The drive operates normally for ten minutes following a fault restart.
• A fault is cleared manually after protective functions are triggered.
• The power supply is cycled.
n L5-02: Auto Restart Fault Output Operation Selection
Selects if the fault output (H2-01/02/03 = E) is set when the drive attempts to restart.
No.
L5-02
230
OFF
S1-SC
UP
Output frequency
0
Output
Frequency Detection 2
(H2-01=5)
MA-MC
Holding brake
Figure 5.87 Holding Brake Time Chart
Table 5.30 Restart Faults
Function
Name
Number of Auto Restarts
Name
Auto Restart Fault Output Operation Selection
ON
b6-02
d1-01 (Enabled when b1-01 = 0)
d1-03
b6-01
L4-01
ON
Open
Closed
Setting
ov (DC Bus Overvoltage)
PF (Input Phase Loss)
rH (Braking Resistor Fault)
rr (Braking Transistor Fault)
STo (Step Out Detection)
Uv1
(DC Bus Undervoltage)
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
b4-01
Time
DC Injection braking
OFF
Closed
Function
<1>
Setting Range
0 to 10
Setting Range
0 or 1
(Refer to b3: Speed
Default
0
Default
0