YASKAWA CIMR-VU BA0001 Technical Manual page 389

No. Name
Mechanical Weakening
L6-08
(oL5) Detection Operation
Mechanical Weakening
L6-09
Detection Speed Level
Mechanical Weakening
L6-10
Detection Time
Mechanical Weakening
L6-11
Detection Start Time
L7-01 Forward Torque Limit
L7-02 Reverse Torque Limit
Forward Regenerative
L7-03
Torque Limit
Reverse Regenerative Torque
L7-04
Limit
Torque Limit Integral Time
L7-06
Constant
Torque Limit Control Method
L7-07 Selection during Accel/
Decel
Internal Dynamic Braking
L8-01 Resistor Protection Selection
(ERF type)
L8-02 Overheat Alarm Level
YASKAWA ELECTRIC SIEP C710606 18F YASKAWA AC Drive – V1000 Technical Manual
Description
This function can detect an over/undertorque in a certain speed
range as a result of machine fatigue. It is triggered by a certain
operation time and uses the oL1 detection settings (L6-01 to
L6-02)
0: Mechanical Weakening Detection disabled.
1: Continue running (alarm only). Detected when the speed
(signed) is greater than L6-09.
2: Continue running (alarm only). Detected when the speed
(not signed) is greater than L6-09.
3: Interrupt drive output (fault). Detected when the speed
(signed) is greater than L6-09.
4: Interrupt drive output (fault). Detected when the speed (not
signed) is greater than L6-09.
5: Continue running (alarm only). Detected when the speed
(signed) is less than L6-09.
6: Continue running (alarm only). Detected when the speed
(not signed) is less than L6-09.
7: Interrupt drive output (fault). Detected when the speed
(signed) is less than L6-09.
8: Interrupt drive output (fault). Detected when the speed (not
signed) is less than L6-09.
Sets the speed that triggers mechanical weakening detection.
When L6-08 is set for an unsigned value, the absolute value is
used even if the setting is negative.
Sets the time a mechanical weakening has to be detected before
an Alarm/Fault is triggered.
Sets the operation time (U1-04) that has to be passed before
Mechanical weakening detection is active.
L7: Torque Limit
Use L7 parameters to configure the torque limit function.
Sets the torque limit value as a percentage of the motor rated
torque. Four individual quadrants can be set.
output torque
positive torque
L7-04
regeneration
REV
regeneration
L7-02
negative torque
Sets the integral time constant for the torque limit.
Selects the method of torque limit control during accel/decel.
0: Proportional Control (change to integral controls at fixed
speeds). Use this setting when acceleration to the desired speed
has priority over torque limitation.
1: Integral Control. Use this setting if the torque limitation has
priority.
When torque limit is applied to the motor, accel/decel time
may increase and motor speed may not meet the speed
reference.
L8: Hardware Protection
Use L8 parameters to configure hardware protection functions.
Selects the Braking resistor when using a 3% duty cycle
heatsink mounted braking resistor. This parameter does not
enable or disable the braking transistor of the drive.
0: Resistor overheat protection disabled
1: Resistor overheat protection enabled
When the heatsink temperature exceeds the value set in this
parameter, an Overheat Alarm (oH) will occur.
Range
0 to 8
-110.0 to
+110.0% 110% A A A
0.0 to 10.0
s
0 to 65535
0 to 300
0 to 300
0 to 300
L7-01
motor
r/min
FWD
0 to 300
L7-03
5 to 10000
0, 1
0, 1
50 to 130
B.2 Parameter Table
Control
Mode
Addr.
Def. Pg.
O
Hex
V/ P
L
f M
V
0 A A A 468 233
469 233
0.1 s A A A 46A 234
0 A A A 46B 234
200% − A − 4A7 234
200% − A − 4A8 234
200% − A − 4A9 234
200% − A − 4AA 234
200
− A − 4AC 234
ms
0 − A − 4C9 234
0 A A A 4AD 235
<3>
A A A 4AE 235
389
B