L7: Torque Limit - YASKAWA V1000 Technical Manual

Setting 0: Disabled
Setting 1: Continue Running if the Speed is Greater than L6-09 (signed) - Alarm
Detection when the speed is above L6-09 (signed). Upon detection the operation is continued but an oL5 alarm is output.
Setting 2: Continue Running if the Speed is Greater than L6-09 - Alarm
Detection when the speed is above L6-09 (unsigned). Upon detection the operation is continued but an oL5 alarm is output.
Setting 3: Stop when Motor Speed is Greater than L6-09 (signed)
Detection when the speed is above L6-09 (signed). Upon detection the operation is stopped and an oL5 fault is output.
Setting 4: Stop when Motor Speed is Greater than L6-09
Detection when the speed is above L6-09 (unsigned). Upon detection the operation is stopped and an fault is output.
Setting 5: Continue Running if the Speed is less than L6-09 (signed) - Alarm
Detection when the speed is below L6-09 (signed). Upon detection the operation is continued but an oL5 alarm is output.
Setting 6: Continue Running if the Speed is less than L6-09 - Alarm
Detection when the speed is below L6-09 (unsigned). Upon detection the operation is continued but an oL5 alarm is output.
Setting 7: Stop when Motor Speed is less than L6-09 (signed)
Detection when the speed is below L6-09 (signed). Upon detection the operation is stopped and an oL5 fault is output.
Setting 8: Stop when Motor Speed is less than L6-09
Detection when the speed is below L6-09 (unsigned). Upon detection the operation is stopped and an oL5 fault is output.
n L6-09: Mechanical Weakening Detection Speed Level
Sets the speed level that defines the speed range for mechanical weakening detection.
No.
L6-09 Mechanical Weakening Detection Speed Level
The value is set as a percentage of the maximum frequency. If L6-08 is set for unsigned speed detection (L6-08 = 2, 4, 6,
8) then the absolute value of L6-09 is used, i.e., negative settings will be treated as positive.
n L6-10: Mechanical Weakening Detection Time
Sets the time permitted for the situation selected in parameter L6-08 to arise before mechanical weakening is detected.
No.
L6-10
n L6-11: Mechanical Weakening Detection Start Time
Sets the drives cumulative operation time at which mechanical weakening detection is activated. If U4-01 reaches the
L6-11 value, the function is activated.
No.
L6-11 Mechanical Weakening Detection Start Time
u

L7: Torque Limit

The torque limit function can be used to limit the torque in each of the four quadrants individually and thereby protect the
machinery. It can be used in the Open Loop Vector Control mode. A digital output programmed for "During Torque Limit"
(H2-01/02/03 = 30) can be switched when the drive is operating at the torque limit.
n L7-01/02/03/04: Torque Limits
These parameters set the torque limits in each operation mode.
No.
L7-01
L7-02
L7-03
L7-04
Note: If the multi-function analog input is programmed for "10: Positive Torque Limit", "11: Negative Torque Limit", "12: Regenerative
Torque Limit", or "15: General Torque Limit", the drive uses the lower value of either L7-01 through L7-04, or analog input torque
limit. Refer to Setting 10/11/12/15: Positive/Negative/Regenerative/General Torque Limit (OLV only) on page 199
using analog torque limits.
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
Name
Name
Mechanical Weakening Detection Time
Name
Name
Forward Torque Limit
Reverse Torque Limit
Forward Regenerative Torque Limit
Reverse Regenerative Torque Limit
5.8 L: Protection Functions
Setting Range
-110.0 to 110.0%
Setting Range
0.0 to 10.0 s
Setting Range
0 to 65535 h
Setting Range
0 to 300%
0 to 300%
0 to 300%
0 to 300%
Default
110%
Default
0.1 s
Default
0 h
5
Default
200%
200%
200%
200%
for details on
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