L4: Speed Detection; L5: Automatic Fault Reset - YASKAWA L1000V Technical Manual

5.8 L: Protection Functions
n
L3-06: Stall Prevention Level during Run
Sets the Stall Prevention level during run as a percentage of the drive rate output current.
No.
L3-06
<1> The upper limit and default for this setting is determined by L8-38.
u L4: Speed Detection
These parameters set up the speed agree and speed detection functions which can be assigned to the multi-function
output terminals.
n
L4-01, L4-02: Speed Agreement Detection Level and Detection Width
Parameter L4-01 sets the detection level for the digital output functions "User-set speed agree 1," "Speed detection 1,"
and "Speed detection 2."
Parameter L4-02 sets the hysteresis level for these functions.
No.
L4-01
L4-02
For more details on speed agree and speed detection settings, refer to
ME-MF and P1-PC Function Selection on page
n
L4-03, L4-04: Speed Agreement Detection Level and Detection Width (+/-)
Parameter L4-03 sets the detection level for the digital output functions "Speed agree 2," "User-set speed agree 2,"
"Speed detection 3," and "Speed detection 4."
Parameter L4-04 sets the hysteresis level for these functions.
No.
L4-03
L4-04
For more details on speed agree and speed detection settings, refer to
ME-MF and P1-PC Function Selection on page
u 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
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
GF
LF
oC
oH1
oL1
oL2
oL3
oL4
140
Name
Stall Prevention Level during Run
Name
Speed Agreement Detection Level
Speed Agreement Detection Width
127.
Name
Speed Agreement Detection Level (+/-)
Speed Agreement Detection Width (+/-)
127.
Reset
Name
Ground Fault
Output Phase Loss
Overcurrent
Heatsink Overheat
Motor Overload
Drive Overload
Overtorque Detection 1
Overtorque Detection 2
YASKAWA EUROPE SIEP
Setting Range
30 to 165%
Setting Range
0.0 to 120.0 Hz
0.0 to 20.0 Hz
H2-01 to H2-03: Terminals MA-MB-MC, MD-
Setting Range
-120.0 to 120.0 Hz
0.0 to 20.0 Hz
H2-01 to H2-03: Terminals MA-MB-MC, MD-
Fault
ov
rr
UL3
UL4
SE1
SE2
SE3
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YASKAWA AC Drive L1000V Technical Manual
Default
<1>
Default
0.0 Hz
2.0 Hz
Default
0.0 Hz
2.0 Hz
Name
DC Bus Overvoltage
Braking Transistor Fault
Undertorque Detection 1
Undertorque Detection 2
Sequence Error 1
Sequence Error 2
Sequence Error 3
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