YASKAWA GA500 series, Programming, Page: 396 / 526

2.9 L: Protection Functions
396 YASKAWA TOEPYAIGA5002A GA500 Programming
Note:
•
The lower torque limit is enabled when you set the torque limit by the following method.
–
Set H3-02 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:
• The lower torque limit is enabled when you set the torque limit by the following method.
–
Set H3-02 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%)
Note:
•
Use this method to set the torque limit and enable the lower torque limit:
–
Set H3-02 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.
■
L7-06: Torque Limit Integral Time
No.
(Hex.)
Name Description
Default
(Range)
L7-06
(04AC)
Torque Limit 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 [Torque
Limit during Accel/Decel = Proportional & Integral control] .
If there is hunting when torque limits are active, increase the setting value.
■
L7-07: Torque Limit during Accel/Decel
No.
(Hex.)
Name Description
Default
(Range)
L7-07
(04C9)
Torque Limit during Accel/
Decel
Sets the torque limit function during acceleration and deceleration.
0
(0, 1)
0 : Proportional only
The torque limit function works with proportional control during acceleration and deceleration, and switches to
integral control at constant speed. Use this setting when quickly reaching the target speed is more important than the
torque limit during speed changes.
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV
V/f OLV OLV/PM OLV/PM AOLV/PM EZOLV