YASKAWA GA700 Technical Manual page 860

11.9 L: Protection Function
Undertorque is detected only when the output frequency matches the frequency reference. Detection does not
occur during acceleration/deceleration. UL4 [Undertorque Detection 2] is output, but operation continues after
detection.
6 : UL Alm dur RUN
Detection of undertorque is constantly performed when the run command is enabled. UL4 is output, but operation
continues after detection.
7 : UL Flt at SpdAgr
Undertorque is detected only when the output frequency matches the frequency reference. Detection does not
occur during acceleration/deceleration. UL4 is output after detection, and operation stops.
8 : UL Flt dur RUN
Detection of undertorque is constantly performed when the run command is enabled. UL4 is output after
detection, and operation stops.
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L6-05: Torque Detection Level 2
No.
Name
(Hex.)
L6-05 Torque Detection
Level 2
(04A5)
Note:
The detection level for the analog input terminal cannot be set by Overtorque/Undertorque Detection 2.
■
L6-06: Torque Detection Time 2
No.
Name
(Hex.)
L6-06 Torque Detection
Time 2
(04A6)
■
L6-08: Mechanical Weakening Detect Ope
No.
Name
(Hex.)
L6-08 Mechanical
Weakening Detect
(0468)
Ope
Mechanical weakening via overtorque or undertorque is detected in accordance with the criteria set in L6-08 to
L6-11 [Mechanical Deterioration Detection Settings Parameters]. Overtorque/undertorque detection criteria is set
in L6-01 to L6-03 [Torque Detection 1 Settings Parameters]. Note that the drive operation selection as set by L6-
01 [Torque Detection Selection 1] is disabled.
0 : Disabled
Mechanical weakening detection is not performed.
1 : Alm Spd>L6-09
Mechanical weakening is detected when the speed (signed) is more than or equal to the value set in L6-09
[MechanicalWeakeningDetectSpdLvl]. oL5 [Mechanical Weakening Detection 1] is output, but operation
continues after detection.
2 : Alm [Spd]>L6-09
Mechanical weakening is detected when the speed (absolute value) is more than or equal to the value set in L6-09.
oL5 is output, but operation continues after detection.
3 : Flt Spd>L6-09
Mechanical weakening is detected when the speed (signed) is more than or equal to the value set in L6-09. oL5 is
output after detection, and operation stops.
4 : Flt [Spd]>L6-09
860
V/f CL-V/f OLV CLV AOLV
Sets the detection level for Overtorque/Undertorque Detection 2. This
parameter is set on the basis of the drive rated output current as the 100%
value when using V/f Control. This parameter is set on the basis of the
motor rated torque as the 100% value when using vector control.
V/f CL-V/f OLV CLV AOLV
Sets the detection time for Overtorque/Undertorque Detection 2.
V/f CL-V/f OLV CLV AOLV
Selects the speed range at which mechanical deterioration is detected and
the operation of drives (operation status) after detection.
YASKAWA ELECTRIC SIEP C710617 01B YASKAWA AC Drive GA700 Technical Manual
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Description
OLV/PM AOLV/PM CLV/PM EZOLV OLV/PM
Default Setting
(Range)
150%
(0 - 300%)
Default Setting
(Range)
0.1 s
(0.0 - 10.0 s)
Default Setting
(Range)
0
(0 - 8)