11.8 H: Terminal Functions
922 YASKAWA ELECTRIC SIEP C710617 05F YASKAWA AC Drive GA700 Technical Manual
Figure 11.112 Torque Limits and Analog Input Settings Parameters
Note:
• When you use L7-01 to L7-04 and analog inputs to set torque limits for the same quadrant, it will enable the lower torque limit.
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 output current of the drive limits the 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 cannot be more than the limit of the drive rated output current,
although the torque limit is high.
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 11.113 shows the relation between torque limits from parameters and torque limits from analog input.
Figure 11.113 Torque Limits from Parameters and Analog Inputs
■ 11: Reverse Torque Limit
Setting Function Description
11 Reverse Torque Limit
Enters the load torque limit if the motor rated torque is 100%.
Note:
When you use L7-01 to L7-04 and analog inputs to set torque limits for the same quadrant, it will enable the lower torque limit.
■ 12: Regenerative Torque Limit
Setting Function Description
12 Regenerative Torque
Limit
Enters the regenerative torque limit if the motor rated torque is 100%.
To Next Page
Loading...
