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How to Use Torque Feed-forward Function
To use the torque feed-forward function, set the following memory switch to 1.
Para. No.
Pn011
Description
Setting range
0: Does not use Torque Feed-forward Function
0 1
1: Use Torque Feed-forward Function
Default
0
This function cannot be used with the function for torque restriction by analog voltage reference.
To use the torque feed-forward function, input a speed reference to the V-REF terminal and a torque feed-forward
reference to the T-REF terminal.
The host controller must generate a torque feed-forward reference.
Setting:
The value of torque feed-forward value is determined by Pn031 (set according to Host controller)
The factory setting is Pn031 = 30. If, for example, the torque feed-forward value is ±3 V, torque is restricted to ±100%
(rated torque).
Para. No.
Description
Pn031
Torque Reference gain
Unit
0.1V/100%
Setting range
10
100
Default
30
4.2.10 Using Torque Restriction by Analog Voltage Reference
For speed control (analog reference Pn041=9) only.
This function restricts torque by assigning the T-REF terminal (1CN-21, 1CN-22) a torque limit value in terms of
analog voltage. Since torque reference input terminal T-REF is used as an input terminal, this function cannot be used
for torque control. When /PCL signal (1CN-16) is ON, the forward torque is under restriction. When /NCL (1CN-17) is
ON, the reverse torque is restricted.
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