12.8 L: PROTECTION
772 SIEPYEUOQ2A01A AC Drive Q2A Technical Manual
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 = 9, D [AI Function Select = FW Trq Lim, GenerTrqLim].
–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 RV Torque Limit
No.
(Hex.)
Name Description
Default
(Range)
L7-02
(04A8)
RUN
RV 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 = 9, D [AI Function Select = FW Trq Lim, GenerTrqLim].
–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 FW Reg. TrqLimit
No.
(Hex.)
Name Description
Default
(Range)
L7-03
(04A9)
RUN
FW Reg. TrqLimit
Sets the torque limit value for forward regenerative conditions as a percentage of the motor rated
torque.
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 = 9, D [AI Function Select = FW Trq Lim, GenerTrqLim].
–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 RV Reg. TrqLimit
No.
(Hex.)
Name Description
Default
(Range)
L7-04
(04AA)
RUN
RV Reg. TrqLimit
Sets the torque limit value for reversed regenerative conditions as a percentage of the motor rated
torque.
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 = 9, D [AI Function Select = FW Trq Lim, GenerTrqLim].
–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.
■ L7-06 TrqLimit Integral Time
No.
(Hex.)
Name Description
Default
(Range)
L7-06
(04AC)
TrqLimit Integral Time
Sets the integral time constant for the torque limit function.
200 ms
(5 - 10000 ms)
Decrease the setting value to increase torque limit responsiveness when you use torque limits and L7-07 = 1
[TrqLimit@Acc/Decel = P-ctrl@Ac/Dec].
If there is hunting when torque limits are active, increase the setting value.
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