YASKAWA CIMR-VU BA0001 Technical Manual page 233

No.
L6-02
L6-05
Note: 1. The torque detection level 1 (L6-02) can also be supplied by an analog input set to H3-02/10 = 7. In this case the analog value has priority
and the setting L6-02 is disregarded. Torque detection level 2 (L6-05) cannot be set by an analog input.
2. The detection levels for overtorque and undertorque are set as a percentage of the drive rated current when using V/f Control or Open
Loop Vector Control. When using Closed Loop Vector Control, the drive sets torque detection as a percentage of the motor rated current.
n L6-03/L6-06: Torque Detection Time 1/2
These parameters set the time that the levels set in L6-02/05 have to be exceeded before an alarm/fault is triggered.
No.
L6-03
L6-06
n
Mechanical Weakening Detection
This function can be used to detect mechanical weakening of a machine that leads to overtorque or undertorque situations after
a certain machine operation time has elapsed.
The function is activated in the drive when the cumulative operation counter U4-01 exceeds the time set in parameter L6-11.
Mechanical weakening detection uses the torque detection 1 settings (L6-01/02/03) and triggers an oL5 fault when overtorque
or undertorque occurs in the speed range determined by parameter L6-08/09. The oL5 operation is set by parameter L6-08.
To output a signal for mechanical weakening detection, set H2-01, H2-02, or H2-03 to 22.
n L6-08: Mechanical Weakening Detection Operation
Decides which speed range the function is active and sets the mechanical weakening detection operation.
No.
L6-08
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
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
Name
Torque Detection Level 1
Torque Detection Level 2
Name
Torque Detection Time 1
Torque Detection Time 2
Name
Mechanical Weakening Detection
Name
5.8 L: Protection Functions
Setting Range
0 to 300%
0 to 300%
Setting Range
0.0 to 10.0 s
0.0 to 10.0 s
Setting Range
0 to 8
Setting Range
-110.0 to 110.0%
Default
150%
150%
Default
0.1 s
0.1 s
Default
0
5
Default
110%
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