L7: torque limits – Yaskawa Matrix Converter User Manual
Page 148
5
-48
L7: Torque Limits
Parameter
Number
Name
Description
Setting
Range
Default
Change
during
Run
Control
Methods
MEMO-
BUS
Register
Page
Display
V/f
Open
Loop
Vector
Flux
Vector
L7-01
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%
No
No
A
A
4A7H
4-17
6-40
Torq Limit Fwd
L7-02
Reverse Torque
Limit
0 to 300 200%
No
No
A
A
4A8H
4-17
6-40
Torq Limit Rev
L7-03
Forward Regener-
ative Torque
Limit
0 to 300 200%
No
No
A
A
4A9H
4-17
6-40
Torq Lmt Fwd
Rgn
L7-04
Reverse Regener-
ative Torque
Limit
0 to 300 200%
No
No
A
A
4AAH
4-17
6-40
Torq Lmt Rev
Rgn
L7-06
Torque Limit Inte-
gral Time Con-
stant
Sets the torque limit value as a percentage
of the motor rated torque. Four individual
quadrants can be set.
5 to
10,000
200
ms
No
No
A
No
4ACH
4-17
6-40
Torq Limit Time
L7-07
Torque Limit
Control Method
Selection During
Accel/Decel
Selects the method of torque limit con-
trols during accel/decel
0: Proportional Controls (uses integral
controls at fixed speeds).
1: Integral Controls
Adjustment is not normally required.
With applications that require torque lim-
its during accel/decel, integral controls
(setting value = 1) are used when torque
controls take precedence. When torque
limit is applied to the motor, accel/decel
time may increase and motor speed may
not run at the indicated speed reference.
0, 1
0
No
No
A
No
4C9H
4-17
6-40
Torque Limit Sel
Output torque
Positive torque
Reverse
Negative torque
No. of
motor
rotations
Forward
Regenerative
state
Regenerative
state