12.8 H: Terminal Functions
940 YASKAWA SIEPC71061737D GA800 Drive Technical Reference
• Use a communication option to set all four torque limit quadrants together.
Figure 12.108 shows the configuration method for each quadrant.
Figure 12.108 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 to L7-04 = 200%, and MFAI torque limit = 150%
• The drive output current limits maximum output torque. The torque limit is 150% of the rated output current for HD and to 120% of the
rated output current for ND. The actual output torque is not more than the limits of the drive rated output current when you set the torque
limit to a high value.
If you use drives in applications where the vertical axis can fall, make sure that you know these items:
• Correctly configure drives and motors.
• Correctly set parameters.
• You can change parameter values after you do Auto-Tuning.
• Use a system that will not let the vertical axis fall if the drive fails.
Figure 12.109 shows the relation between torque limits from parameters and torque limits from analog input.
Figure 12.109 Torque Limits from Parameters and Analog Inputs
■ 11: Reverse Torque Limit
Setting Value Function Description
11 Reverse Torque Limit
Enters the load torque limit if the motor rated torque is 100%.
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