Parameter Details
11
11.9 L: Protection Functions
YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual 975
• Use L7-01 to L7-04 [Torque Limit] to individually set the four torque limit quadrants.
• Use MFAI to individually set the four torque limit quadrants. Set H3-02, H3-06, H3-10 = 10, 11, 12 [MFAI
Function Select = Forward/Reverse/Regenerative Torque Limit].
• Use MFAI to set all four torque limit quadrants together. Set H3-02, H3-06, H3-10 = 15 [General Torque
Limit].
• Use a communication option to set all four torque limit quadrants together.
Figure 11.145 shows the configuration method for each quadrant.
Figure 11.145 Torque Limits and Analog Input Setting Parameters
Note:
When L7-01 to L7-04 and analog inputs or communication option torque limits set torque limits for the same quadrant, the lower value
is enabled.
In this example of parameter settings, the torque limit for quadrant 1 is 130% and the torque limit for quadrants 2, 3, and 4 is 150%.
Settings: L7-01 = 130%, L7-02, L7-03, L7-04 = 200%, MFAI torque limit = 150%
■ L7-01: Forward Torque Limit
No.
(Hex.)
Name Description
Default
(Range)
L7-01
(04A7)
RUN
Forward Torque
Limit
Sets the torque limit value for forward motoring as a percentage, where
motor rated torque is the 100% value.
200%
(0 - 300%)
Note:
• The lower torque limit is enabled when you set the torque limit by the following method.
–Set H3-02, H3-06, or H3-10 = 10, 15 [MFAI Function Select = Forward, Reverse/Regenerative Torque Limit].
–Use a communication option to set the torque limits
• You must think about drive capacity when a large quantity of torque is necessary. If you set the value too high, the drive can detect oC
[Overcurrent].
• If you set the value too low with large loads, the motor can stall.
■ L7-02: Reverse Torque Limit
No.
(Hex.)
Name Description
Default
(Range)
L7-02
(04A8)
RUN
Reverse Torque Limit
Sets the torque limit value for reversed motoring as a percentage, where
motor rated torque is the 100% value.
200%
(0 - 300%)
Note:
• The lower torque limit is enabled when you set the torque limit by the following method.
–Set H3-02, H3-06, or H3-10 = 10, 15 [MFAI Function Select = Forward, Reverse/Regenerative Torque Limit].
–Use a communication option to set the torque limits
• You must think about drive capacity when a large quantity of torque is necessary. If you set the value too high, the drive can detect oC
[Overcurrent].
• If you set the value too low with large loads, the motor can stall.
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