If the terminal S4 is already assigned to another function, use another terminal for this switching.

5.11 Switching between speed control and torque control



Motor control mode selection



 Input terminal selection #1 to #8

(One of these functions(terminals) is used.)

Function

These parameters are used to switch between speed control and torque control by external operation (signal input to a terminal) or by communication.

Speed/torque switching

Speed controlTorque control

 

 

 

 

 

 

 

 

S4Speed/torque

 

 

S4Speed/torque

 

switching

 

 

 

 

 

switching

 

 

 

 

RR

 

 

RX

 

CC

CC

 

CC

CC

 

 

 

Control

Speed control

mode

(, , , , )

Speed/torque

S4-CC disconnected

switching

 

Speed

RR-CC (default setting)

command

 

Control

Torque control

mode

(, )

Speed/torque

S4-CC connected

switching

 

Torque

RX-CC (default setting)

Command

 

1)Terminal function setting

The terminalS4 has been assigned to preset-speed 4 by default. Therefore, to use this terminal for switching of control modes, it is necessary to change this assignment.

Title

Function

Adjustment range

Setup value



Input terminal selection #8 (S4)





Note 1)

2)The ON/OFF logic can be reversed by setting this parameter at 113.

2)Selection of command value

[Speed setting]

The command set with the parameter  is valid. (Default setting: RR input)

Title

Function

Adjustment range

Default setting

 

 

: VI (voltage input)/II (current input)

 

 

 

: RR (volume/voltage input)

 

 

 

: RX (voltage input)

 

 

 

: RX2 (voltage input) (optional)

 

 

Speed setting

: Operating panel input

 



: Binary/BCD input(optional)

mode selection

 

: Common serial communication option

 

 

 

 

 

 

: Serial communication RS485

 

 

 

: Communication add-on cassette option

 

 

 

: Up-down frequency

 

 

 

: Pulse input (optional)

 

E-22

Page 83
Image 83
Toshiba VF-A7 Switching between speed control and torque control,  ~, : Motor control mode selection, Speed setting