SSINVERTER SSI700, Руководство пользователя, Страница: 130 / 148

SSI700 User Manual Description of Function Codes
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The SSI700 provides four communication and you can select one based on actual
requirements.
Property
Default Setting Range Parameter Name
Function
Code
Group 17: Torque Control and Restricting Parameters
☆
50.00
Hz
0.00 Hz to maximum frequency
(P0-10)
Forward maximum
frequency in torque
control
17-05
☆
50.00
Hz
0.00 Hz to maximum frequency
(P0-10)
Reverse maximum
frequency in torque
control
17-06
two parameters are used to set the maximum frequency in forward or reverse rotation in
torque control mode.
In torque control, if the load torque is smaller than the motor output torque, the motor's
rotational speed will rise continuously. To avoid runaway of the mechanical system, the
motor maximum rotating speed must be limited in torque control.
You can implement continuous change of the maximum frequency in torque control
dynamically by controlling the frequency upper limit.
Property
Default Setting Range Parameter Name
Function
Code
Group 17: Torque Control and Restricting Parameters
☆
0.00s 0.00–65000s
Acceleration time in
torque control
17-07
☆ 0.00s 0.00–65000s
Deceleration time in
torque control
17-08
In torque control, the difference between the motor output torque and the load torque
determines the speed change rate of the motor and load. The motor rotational speed may
change quickly and this will result in noise or too large mechanical stress. The setting of
acceleration/deceleration time in torque control makes the motor rotational speed change
softly.
However, in applications requiring rapid torque response, set the acceleration/
deceleration time in torque control to 0.00s. For example, two AC drives are connected to
drive the same load. To balance the load allocation, set one AC drive as master in speed
control and the other as slave in torque control. The slave receives the master's output
torque as the torque command and must follow the master rapidly. In this case, the
acceleration/deceleration time of the slave in torque control is set to 0.0s.