Speed and torque control parameter group11
PARAMETER DESCRIPTION 238
5.12.5 Torque limit
Set the torque limit values of the four quadrants via parameters.
Forward-rotation
electronic torque limit
Set torque limit in first quadrant.
Reverse-rotation
regenerative torque
limit
Set torque limit in second quadrant.
Reverse-rotation
electronic torque limit
Set torque limit in third quadrant.
Forward-rotation
regenerative torque
limit
Set torque limit in fourth quadrant.
Four quadrants torque limit function
11-19(P.408)~11-22(P.411) are set to 100.0%, in vector control, inverter max output torque is the motor rated torque.
Motor rated torque formula:
, P(W) is from 05-01(P.302), ω(rad/s) can be find according to
parameter 05-06(P.307):
.
See the figure below for four quadrants torque limit:
quadrant 1quadrant 2
quadrant 3 quadrant 4
FWD motor rotation
REV motor rotation
positive torque reference
negative torque reference
FWD run motoring
Parameter11-19P.408
Analog 14Positive torque limit
Analog 16Positive/negative
torque limit
REV run regenerative
REV run motoring
FWD run regenerative
Parameter11-20P.409
Analog 14 Positive torque limit
Analog 17Regenerative torque limit
Parameter11-21P.410
Analog 15Negative torque limit
Analog 16Positive/negative
torque limit
Parameter11-22P.411
Analog 15Negative torque limit
Analog 16Positive/negative
torque limit
Analog 16Positive/negative
torque limit
Analog 17Regenerative torque
limit
Minimum torque limit is valid among torque limit set by parameter, torque limit set by analog and inverter output
current limit set by 06-01(P.22).