
Time
UP
S1-SC
OFF
d1-03
d1-01 (Enabled when b1-01 = 0)
L4-01
b4-01
OFF
DC Injection braking
ON
ON
MA-MC
Holding brake
Output frequency
0
Frequency Detection 2
(H2-01=5)
Closed
Closed
Open
b6-02
b6-01
Output
Figure 5.87 Holding Brake Time Chart
u
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
The drive can attempt to restart itself following the faults listed below.
Table 5.30 Restart Faults
Setting
Function
GF
(Ground Fault)
LF
(Output Open Phase)
oC
(Overcurrent)
oH1
(Drive Overheat)
oL1
(Motor Overload)
oL2
(Drive Overload)
oL3
(Overtorque 1)
oL4
(Overtorque 2)
Setting
Function
ov
(DC Bus Overvoltage)
PF
(Input Phase Loss)
rH
(Braking Resistor Fault)
rr
(Braking Transistor Fault)
STo
(Step Out Detection)
Uv1
(DC Bus Undervoltage)
<1>
<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.
Name
Setting Range
Default
L5-01
Number of Auto Restarts
0 to 10
0
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.
Name
Setting Range
Default
L5-02
Auto Restart Fault Output Operation Selection
0 or 1
0
5.8 L: Protection Functions
230
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual