No.
(Addr.
Hex)
Name Description Values Page
L6-04
(4A4)
Torque Detection
Selection 2
All Modes
0: Disabled
1: oL4 detection only active during speed agree, operation continues after
detection
2: oL4 detection always active during run, operation continues after detection
3: oL4 detection only active during speed agree, output shuts down on an oL4
fault
4: oL4 detection always active during run, output shuts down on an oL4 fault
5: UL4 detection only active during speed agree, operation continues after
detection
6: UL4 detection always active during run, operation continues after detection
7: UL4 detection only active during speed agree, output shuts down on an oL4
fault
8: UL4 detection always active during run, output shuts down on an oL4 fault
Default: 0
Range: 0 to 8
259
L6-05
(4A5)
Torque Detection
Level 2
All Modes
Sets the overtorque and undertorque detection level.
Default: 150%
Min.: 0
Max.: 300
260
L6-06
(4A6)
Torque Detection
Time 2
All Modes
Sets the time an overtorque or undertorque condition must exist to trigger
torque detection 2.
Default: 0.1 s
Min.: 0.0
Max.: 10.0
260
L6-08
(468)
Mechanical Weakening
Detection Operation
All Modes
This function can detect an overtorque or undertorque in a certain speed range
as a result of machine fatigue. It is triggered by a specified operation time and
uses the oL1 detection settings (L6-01 and L6-03).
0: Mechanical Weakening Detection disabled.
1: Continue running (alarm only). Detected when the speed (signed) is greater
than L6-09.
2: Continue running (alarm only). Detected when the speed (not signed) is
greater than L6-09.
3: Interrupt drive output (fault). Detected when the speed (signed) is greater
than L6-09.
4: Interrupt drive output (fault). Detected when the speed (not signed) is greater
than L6-09.
5: Continue running (alarm only). Detected when the speed (signed) is less
than L6-09.
6: Continue running (alarm only). Detected when the speed (not signed) is less
than L6-09.
7: Interrupt drive output (fault). Detected when the speed (signed) is less than
L6-09.
8: Interrupt drive output (fault). Detected when the speed (not signed) is less
than L6-09.
Default: 0
Range: 0 to 8
260
L6-09
(469)
Mechanical Weakening
Detection Speed Level
All Modes
Sets the speed that triggers Mechanical Weakening Detection. When L6-08 is
set for an unsigned value, the absolute value is used if the setting is negative.
Default: 110.0%
Min.: -110.0
Max.: 110.0
261
L6-10
(46A)
Mechanical Weakening
Detection Time
All Modes
Sets the time mechanical weakening has to be detected before an alarm or fault
is triggered.
Default: 0.1 s
Min.: 0.0
Max.: 10.0
261
L6-11
(46B)
Mechanical Weakening
Detection Start Time
All Modes
Sets the operation time (U1-04) required before Mechanical Weakening
Detection is active.
Default: 0
Min.: 0
Max.: 65535
261
B.10 L: Protection Function
432
YASKAWA ELECTRIC SIEP C710616 31B YASKAWA AC Drive – A1000 Technical Manual
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