Toshiba VF-AS3 User Manual

Torque Control Instruction Manual

E6582106

Note

1. Read this manual carefully before using the inverter. After reading, the user should keep this manual at hand to use it for maintenance and inspection in the future.

2. Please be informed that the contents of this document may be changed without notice.

1. Torque control function

Inverter

Speed command

■ Function

VF-AS3 has speed control that controls the rotation of a motor and torque control that controls a power necessary for constant tension control such as winding control. Torque control can be used with a motor speed sensor or without it. For a machine requiring torque accuracy, use the control with sensor. Note 1) For torque control with sensor, an encoder feedback option "VEC008Z" is required.

■ Difference from speed control

1. What is speed control

Inverter control generally uses speed control. It gives an inverter a command of a desired rotational speed so that the inverter can control the motor to rotate at the speed as commanded. Therefore, the speed becomes constant regardless of the size of load.

Main application

Group Examples

Wind/water power machines and compress machine

Distribution, conveyance, and transport machines

Construction machines related

Textile machine

Food processing machine

Packing machine

Wood processing machine

Metal handicraft machine

Metal processing machine

Paper making and printing machine

Automatic service devices

Environment and life-related machine

Fan, blower, pump, air-conditioning system, clean room, dryer, and compressor

Crane, hoist, conveyor, 3-dimensional automatic warehouse, and 3-dimensional parking

Rock crusher, tunnel boring machine, and paving machine

Fiber machine, spinning machine, loom, dyeing machine, and industrial sewing machine

Blender, slicer, rice/wheat cleaning machine, bakery equipment, noodle making machine, tea manufacturing machine, and commercial oven

Wrapping machine, packing machine, and bag-filling machine

Woodwork machine, sawing lumbering machine, and woodwork milling machine,

Lathe, drilling machine, milling machine, and grinding machine

Wire drawing machine and winding/rewinding machine

Printing machine, and paperwork machine

Health care tool (running machine and so on), medical appliance (X-ray equipment and so on), and stage setting

Business-purpose washing machine, carwash machine, shutter, and dust collector

, press machine,

E6582106

2. What is torque control

Inverter

Torque command

Torque control gives the inverter a command of a torque to be applied to a load machine, and the inverter controls so that this torque command and the load torque should match. Therefore, the speed is decreased with a larger load and increased with a smaller load.

■ Parameter setting

Torque control

Main application

Group Examples

Textile machine

Metal processing machine

Paper making and printing machine

Automatic service devices

Fiber machine, spinning machine, and loom

Wire drawing machine and winding/ rewinding machine

Printing machine and paperwork machine

Stage setting

E6582106

Title Parameter name Adjustment range Unit Default setting

0: V/f constant 1: Variable torque 2: Automatic torque boost 3: Vector control 1 4: Energy savings 5: Dynamic energy savings (for fan and pump)

Pt V/f Pattern

F420 Torque command selection

6: PM motor control 7: V/f 5-point setting 8: 9: Vector control 2 10: PG feedback control 11: PG feedback vector control (speed/torque) 12: -

0: 1: Terminal RR 2: Terminal RX 3: Terminal II 4: Terminal AI4 (option) 5 - 11: 12: F725 13 - 19: 20: Embedded Ethernet 21: RS485 communication (connector 1) 22: RS485 communication (connector 2) 23: Communication option

-0

-2

F421 Torque command filter 0 - 1000 ms 0

F423 Tension control torque bias input Same as [F420] - 0

F424 Load sharing gain input Same as [F420] - 0

E6582106

Title Parameter name Adjustment range Unit Default setting

0: 1: Terminal RR 2: Terminal RX

F425 Fwd speed limit input

F426 Fwd speed limit level 0.0 - UL Hz 50.0/60.0

F427 Rev speed limit input

F428 Rev speed limit level 0.0 - UL Hz 50.0/60.0

F430

Speed limit center value input select

3: Terminal II 4: Terminal AI4 (option) 5 - 11: 12: F426

0: 1: Terminal RR 2: Terminal RX 3: Terminal II 4: Terminal AI4 (option) 5 - 11: 12: F428

0: 1: Terminal RR 2: Terminal RX 3: Terminal II 4: Terminal AI4 (option) 5 - 11: 12: F431

-0

F431 Speed limit center value 0.0 - FH Hz 0.0

F432 Speed limit band 0.0 - FH Hz 0.0

F435

F441 Power running torque limit level 1

F443 Regenerative torque limit level 1

F444 Power running torque limit level 2

F445 Regenerative torque limit level 2

F446 Power running torque limit level 3

F447 Regenerative torque limit level 3

F448 Power running torque limit level 4

F449 Regenerative torque limit level 4

Rotation direction limit during torque control

0: Fwd/Rev permit 1: Command direction permit

0.0 - 249.9

250.0: Disabled

0.0 - 249.9

250.0: Disabled

0.0 - 249.9

250.0: Disabled

0.0 - 249.9

250.0: Disabled

0.0 - 249.9

250.0: Disabled

0.0 - 249.9

250.0: Disabled

0.0 - 249.9

250.0: Disabled

0.0 - 249.9

250.0: Disabled

-0

% 250.0

F455 Torque command polarity at Rev

F725 Panel torque command -250 - 250 % 0

F727 Panel tension torque bias -250 - 250 % 0

F728 Panel load sharing gain 0 - 250 % 100

0: Regeneration at positive torque command 1: Power running at positive torque command

-0

E6582106

Analog input

Title Parameter name Adjustment range Unit Default setting

F201 RR point 1 input value 0 - 100 % 0

F202 RR point 1 frequency 0.0 - 590.0 Hz 0.0

F203 RR point 2 input value 0 - 100 % 100

F204 RR point 2 frequency 0.0 - 590.0 Hz 50.0/60.0

F205 RR point 1 rate 0 - 250 % 0

F206 RR point 2 rate 0 - 250 % 100

F210 RX point 1 input value -100 - 100 % 0

F211 RX point 1 frequency 0.0 - 590.0 Hz 0.0

F212 RX point 2 input value -100 - 100 % 100

F213 RX point 2 frequency 0.0 - 590.0 Hz 50.0/60.0

F214 RX point 1 rate -250 - 250 % 0

F215 RX point 2 rate -250 - 250 % 100

F216 II point 1 input value 0 - 100 % 20

F217 II point 1 frequency 0.0 - 590.0 Hz 0.0

F218 II point 2 input value 0 - 100 % 100

F219 II point 2 frequency 0.0 - 590.0 Hz 50.0/60.0

F220 II point 1 rate 0 - 250 % 0

F221 II point 2 rate 0 - 250 % 100

F222 AI4 point 1 input value -100 - 100 % 0

F223 AI4 point 1 frequency 0.0 - 590.0 Hz 0.0

F224 AI4 point 2 input value -100 - 100 % 100

F225 AI4 point 2 frequency 0.0 - 590.0 Hz 50.0/60.0

F226 AI4 point 1 rate -250 - 250 % 0

F227 AI4 point 2 rate -250 - 250 % 100

+ 13 hidden pages