Explanation of Function
Seite 144 / 180
A044/A244
: First / second control method
b040 :
Torque
limit
selection
b041 - b044
: Torque limit 1 - 4
C001 - C008
: Intelligent input selection
C021 - C025
: Intelligent output selection
TORQUE LIMIT FUNCTION
This function limits motor output torque when sensorless vector
control, 0 Hz domain sensorless vector control, or vector control
with sensor are selected.
In torque limit function method, the following three are selected in b040 torque limit selection screen.
1) 4 zone individual setting mode
This mode sets torque limit in 4 zones, forward driving and regenerating, reverse driving and
regenerating, to digital operator setting code b041 - b044 individually.
2) Terminal changing mode
By combination of torque limit changing terminals 1and 2, this mode changes and uses
torque limit 1 - 4
set by in digital operator setting. Selected torque limit range is valid in every driving condition.
3) Analog input mode
This mode sets torque limit value by voltage given to 02 terminal of control terminal. 0 - 10V is
equal to torque limit value 0 - 200%. Selected torque limit value is valid in every driving
condition.
When torque control valid / invalid function is set to intelligent input terminal, torque limit function is valid
only during the signal turning ON. During OFF, torque limit setting is invalid, torque control value is
200% of maximum.
And when torque control valid / invalid function is not set, torque limit function is always valid.
Torque limit value in this function is 200% of maximum current which inverter can output. Therefore, output torque
may change in accordance with motors combined. Make sure that the absolute value of torque is not
appeared.
When torque control signal is selected in intelligent output selection, torque limit signal above mentioned turns ON
while torque limit function is performed.
Setting item
Function
Code
Setting range
contents
Control method selection
A044/A244/A34
4
00
01
02
03
04
05
VC
VP 1.7power
Vf free setting
SLV(A344 is not)
0 Hz domain (A344is not)
V2(A344 is not)
Torque limit selection
b040
00
01
02
4 zone individual setting
Terminal changing
Analog input
Torque limit 1
b041
0 - 200
Unit : %(forward driving in 4 zone
individual setting
Torque limit 2
b042
0 - 200
Unit : %(reverse regenerating in 4
zone
individual setting
Torque limit 3
b043
0 - 200
Unit : %(reverse driving in 4 zone
Relation code
