LS Industrial Systems SV-iV5 Series - Torque Control; Con_26(Torque Reference Source Selection); Con_27(Torque Reference Source); Con

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6. Function Description

6-63

6.5.8 Torque control

One mode among the speed control mode and torque control mode can be set at CON_01( ‘Control Mode’). The

default is the speed control mode. Control mode can be selected using the multi-function terminal input set to ‘Spd/Trq

Sel’. This method has a priority over the one by CON_01.

(Setting example) Programming P6 as Torque control

Code LCD display Description Setting range Unit Setting

DIO_06 P6 define

Multi-function input terminal

P6 definition

Spd/Trq sel

CON_01 Control Mode Control mode setting

Speed

Torque

1) CON_26 (Torque Reference Source Selection)

2) CON_27 (Torque Reference Source)

In the speed control mode, the output of the ASR acts as the torque reference. In the torque control mode, the

torque reference is set by the analog input signal defined as ‘Trq Ref Src’ on the control circuit terminal or by the option

board and the polarity is reversed if the direction of the speed command is changed. If the analog input is used as the

torque reference, the analog input ranging from –10V to 10V is converted to the percentage of the rated torque (-

100~100%) to obtain the torque reference, which can set from –250% to 250% by the settings of Gain and Bias.

CON_27 “Torque Ref” defines torque ref. value when torque source is set to Keypad.

Code LCD display Description Setting range Unit Factory setting

CON_26 Trq Ref Src

Torque reference source

selection

None/Analog

Keypad/Option

None

CON_27 Torque Ref Torque Ref (keypad) -180.0 ~180.0 % 0.0

3) CON_32 (Torque Bias Source Select)

4) CON_33 (Torque Bias quantity)

The Torque Bias is the feedforward compensation which is added to the Torque Reference. The source of Torque Bias

could be selected by the Keypad (CON_32) as one of Multi Function Analog Input and the Option. The Torque Bias is

enabled by MFi programmed as UseTrq Bias. The MFI should be ON for enabling the Torque Bias.

The Analog Input [-10~+10V] is converted to [-100~+100%] and this could be expanded up to [-250~+250%] with

gain and bias.

LS Industrial Systems SV-iV5 Series - Torque Control; Con_26(Torque Reference Source Selection); Con_27(Torque Reference Source); Con_32(Torque Bias Source Select)