YASKAWA GA800 Technical Reference page 993

The drive detects overtorque if the motor current or output torque is more than the level set in L6-05 [Torque
Detection Level 2] for the length of time set in L6-06 [Torque Detection Time 2]. The drive detects undertorque if the
motor current or output torque is less than the level set in L6-05 for the length the time set in L6-06.
0 : Disabled
The drive will not detect overtorque or undertorque.
1 : oL @ Speed Agree - Alarm only
The drive detects overtorque when the output frequency aligns with the frequency reference. Detection does not occur
during acceleration/deceleration. The drive outputs an oL4 [Overtorque Detection 2] and operation continues.
2 : oL @ RUN - Alarm only
When the Run command is enabled, the drive constantly detects overtorque. The drive outputs an oL4 and operation
continues.
3 : oL @ Speed Agree - Fault
The drive detects overtorque when the output frequency aligns with the frequency reference. Detection does not occur
during acceleration/deceleration. The drive outputs an oL4 [Overtorque Detection 2] and operation stops.
4 : oL @ RUN - Fault
When the Run command is enabled, the drive constantly detects overtorque. The drive outputs an oL4 and operation
stops.
5 : UL @ Speed Agree - Alarm only
The drive detects undertorque when the output frequency aligns with the frequency reference. Detection does not
occur during acceleration/deceleration. The drive outputs a UL4 [Undertorque Detection 2] and operation continues.
6 : UL @ RUN - Alarm only
When the Run command is enabled, the drive constantly detects undertorque. The drive outputs a UL4 and operation
continues.
7 : UL @ Speed Agree - Fault
The drive detects undertorque when the output frequency aligns with the frequency reference. Detection does not
occur during acceleration/deceleration. The drive outputs a UL4 and operation stops.
8 : UL @ RUN - Fault
When the Run command is enabled, the drive constantly detects undertorque. The drive outputs a UL4 and operation
stops
■
L6-05: Torque Detection Level 2
No.
Name
(Hex.)
L6-05 Torque Detection Level 2
(04A5)
Note:
Overtorque/Undertorque Detection 2 cannot set the detection level for the analog input terminal.
■
L6-06: Torque Detection Time 2
No.
Name
(Hex.)
L6-06 Torque Detection Time 2
(04A6)
■
L6-07: Torque Detection Filter Time
No.
Name
(Hex.)
L6-07 Torque Detection Filter Time
(04E5)
YASKAWA SIEPC71061737D GA800 Drive Technical Reference
V/f CL-V/f OLV CLV AOLV
Sets the detection level for Overtorque/Undertorque Detection 2. In V/f control, drive rated output
current = 100% value. In vector control, motor rated torque = 100% value.
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
Sets the time constant for a primary filter to the torque reference or to the output current used to
detect overtorque/undertorque.
12.9 L: Protection Functions
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
(Range)
150%
(0 - 300%)
Default
(Range)
0.1 s
(0.0 - 10.0 s)
Default
(Range)
0 ms
(0 - 1000 ms)
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