B.3 Parameter Table
348 YASKAWA ELECTRIC SIEP C710606 44B YASKAWA AC Drive T1000V Technical Manual
L6-05
<15>
Torque Detection Level 2
Sets the overtorque/undertorque detection level. 100% is
equal to the motor rated current in V/f Control or PM OLV
and equal to the motor rated torque in Open Loop Vector
Control.
0 to 300 150% A A A 4A5 199
L6-06
<15>
Torque Detection Time 2
Sets the length of time an overtorque/undertorque
condition must exist before torque detection 2 is
recognized by the drive.
0.0 to 10.0 0.1 s A A A 4A6 199
L7: Torque Limit
Use L7 parameters to configure the torque limit function.
L7-01
<15>
Forward Torque Limit
Sets the torque limit value as a percentage of the motor
rated torque. Four individual quadrants can be set.
0 to 300 200% − A − 4A7 199
L7-02
<15>
Reverse Torque Limit 0 to 300 200% − A − 4A8 199
L7-03
<15>
Forward Regenerative
Torque Limit
0 to 300 200% − A − 4A9 199
L7-04
<15>
Reverse Regenerative
Torque Limit
0 to 300 200% − A − 4AA 199
L7-06
<15>
Torque Limit Integral Time
Constant
Sets the integral time constant for the torque limit. 5 to 10000
200
ms
− A − 4AC 199
L7-07
Torque Limit Control
Method Selection during
Accel/Decel
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.
0, 1 0 − A − 4C9 200
L8: Drive Protection
Use L8 parameters to configure hardware protection functions.
L8-01
Internal Dynamic Braking
Resistor Protection
Selection (ERF type)
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
0,1 0 AAA 4AD 200
L8-02 Overheat Alarm Level
Sets the temperature for the heatsink overheat alarm oH.
If the heatsink temperature exceeds the value set to L8-02,
an output terminal set for the oH alarm (H2- = 20) will
close.
50 to 130
<11> AAA 4AE 200
L8-03
Overheat Pre-Alarm
Operation Selection
Determines the action the drive should take when the
heatsink overheat alarm oH is triggered.
0: Ramp to Stop using the active decel time.
1: Coast to Stop.
2: Fast-stop using the time set in C1-09.
3: Alarm Only. Drive continues running, but displays an
alarm.
Settings 0 through 2 trigger a fault relay if the heatsink
becomes too hot.
0 to 3 3 A A A 4AF 201
L8-05
Input Phase Loss Protection
Selection
Selects the detection of input current phase loss, power
supply voltage imbalance, or main circuit electrolytic
capacitor deterioration.
0: Disabled
1: Enabled
0,1 1 A A A 4B1 201
No. Name Description Range Def.
Control
Mode
Addr.
Hex
Pg.
V/f
OL
V
P
M
L7-01
L7-03
L7-02
L7-04
output torque
positive torque
REV
negative torque
FWD
motor
r/min
regeneration
regeneration
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