Powtran PI9100 Series Manual page 156

Torque digital setting
FA.02
under torque control
mode
FA.01 is used to select the torque setting source, there are eight torque setting modes
in all.
The torque setting adopts the relative value, the 100.0% corresponds to the rated
torque of inverter. Setting range is from -200.0% to 200.0%, indicating that the maximum
torque of inverter is 2 times of the rated torque of inverter.
When the torque setting adopts mode 1 to 7, the 100% of communications, analog
input and pulse input corresponds to FA.02.
Torque control
FA.03
acceleration time
Torque control
FA.04
deceleration time
Under the torque control mode, the difference between the motor output torque and
load torque determines the change rate in speed of the motor and load, therefore, the motor
speed may rapidly change, resulting in the problems such as noise or excessive mechanical
stress. By setting the torque control ac/deceleration time, you can make a smooth change of
motor speed.
But the occasions that needs the rapid response of torque, the torque control
ac/deceleration time must be set to 0.00s. For example: when two hardwired motors drag
the same one load, in order to ensure that the load is evenly distributed, you must set one
inverter as the master unit that works under the speed control mode, the other inverter as the
auxiliary unit that works under the torque control mode, the Actual output torque of the
master unit is used as the torque command of the auxiliary, the torque of the auxiliary needs
quickly follow the master unit, so the torque control ac/deceleration time of the auxiliary
unit shall be set to 0.00s.
Torque control
FA.05
forward maximum
frequency
Torque control
FA.06
reverse maximum
frequency
Used to set the maximum operating frequency of inverter forward or reverse running
under the torque control mode
Under the torque control mode, if the load torque is less than the motor output torque,
the motor speed will continue to rise, in order to prevent "Runaway" and other accidents of
mechanical systems, it is necessary to limit the maximum speed of motor under the torque
control mode.
FA.07
Torque filter time
5-2-13.Control optimization parameters: Fb.00-Fb.09
Code Parameter name
Fb.00
Fast current limiting
reference
MIN(AI1, AI2)
MAX(AI1, AI2)
-200.0% to 200.0%
0.00s to 650.00s
0.00s to 650.00s
0.00Hz to maximum
frequency(F0.19)
0.00Hz to maximum
frequency(F0.19)
0.00s to 10.00s
Setting range
Disable
151
Chapter 5 Function parameter
6
7
150%
0.00s
0.00s
50.00Hz
50.00Hz
0.00s
Factory
setting
0 1
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Change
limits
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