11.9 L: Protection Function
760 YASKAWA SIEPC71061723A YASKAWA AC Drive CR700 Technical Manual
Note:
The lower value is enabled when both L7-01 to L7-04 and either analog inputs or communication option torque limits set torque limits
for the same quadrant.
As in the following 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:
• Use this method to set the torque limit and enable the lower torque limit:
–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:
• Use this method to set the torque limit and enable the lower torque limit:
–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.
■ L7-03: Forward Regenerative Trq Limit
No.
(Hex.)
Name Description
Default
(Range)
L7-03
(04A9)
RUN
Forward Regenerative Trq
Limit
Sets the torque limit value for forward regenerative conditions as a percentage of the motor rated
torque.
200%
(0 - 300%)
Note:
• Use this method to set the torque limit and enable the lower torque limit:
–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.
■ L7-04: Reverse Regenerative Trq Limit
No.
(Hex.)
Name Description
Default
(Range)
L7-04
(04AA)
RUN
Reverse Regenerative Trq
Limit
Sets the torque limit value for reversed regenerative conditions as a percentage of the motor rated
torque.
200%
(0 - 300%)
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