YASKAWA V1000 Technical Manual page 362

B.2 Parameter Table
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
L7-04
Torque Limit
Torque Limit Integral Time
L7-06
Constant
Torque Limit Control
L7-07 Method Selection during
Accel/Decel
Internal Dynamic Braking
L8-01 Resistor Protection
Selection (ERF type)
L8-02 Overheat Alarm Level
362
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
L7-04
regeneration
REV
L7-02
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.
YASKAWA ELECTRIC SIEP C710606 16C YASKAWA AC Drive – V1000 Technical Manual
positive torque
L7-01
motor
r/min
FWD
regeneration
L7-03
negative torque
Control
Mode
Range Def.
O
V/ P
L
f M
V
0 to 8 0 A A A
-110.0 to
110% A A A
+110.0%
0.0 to
0.1 s A A A
10.0 s
0 to
0 A A A
65535
0 to 300 200% − A −
0 to 300 200% − A −
0 to 300 200% − A −
0 to 300 200% − A −
5 to 200
− A −
10000 ms
0, 1 0 − A −
0, 1 0 A A A
<3>
50 to 130 A A A
Addr.
Pg.
Hex
468 222
469 223
46A 223
46B 223
4A7 223
4A8 223
4A9 223
4AA 223
4AC 224
4C9 224
4AD 224
4AE 224