HV580L Series Frequency Inverter
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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.
A0-07
Acceleration time in
torque control
Default
0.00s
Setting range
0.00s
～
65000s
A0-08
Deceleration time in
torque control
Default
0.00s
Setting range
0.00s
～
65000s
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.
Group C Monitor
C parameter set is used to monitor the inverter running state information, the customer can see through the
panel, in order to convenient for debugging, also can be read by the communication parameter set value, to be
used for PC monitor. Among them, 31 C - 00 ~ C - is the P7-03 and P7-04 defined in the operation and stop
monitoring parameters. Specific parameters function code, name and smallest unit see table 6-1
Table 6-1 C Set parameter table
