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E6582106
Torque Control Instruction Manual
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.
E6582106
1. Torque control function
■ 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.
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Main application |
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Inverter |
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Group |
Examples |
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M |
Wind/water power |
Fan, blower, pump, air-conditioning |
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machines and |
system, clean room, dryer, and |
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compress |
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compressor |
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machine |
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Speed command |
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Distribution, |
Crane, hoist, conveyor, 3-dimensional |
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conveyance, and |
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automatic warehouse, and 3-dimensional |
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transport |
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parking |
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machines |
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Construction |
Rock crusher, tunnel boring machine, and |
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machines related |
paving machine |
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Fiber machine, spinning machine, loom, |
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Textile machine |
dyeing machine, and industrial sewing |
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machine |
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Blender, slicer, rice/wheat cleaning |
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Food processing |
machine, bakery equipment, noodle |
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machine |
making machine, tea manufacturing |
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machine, and commercial oven |
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Packing machine |
Wrapping machine, packing machine, and |
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bag-filling machine |
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Wood processing |
Woodwork machine, sawing lumbering |
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machine |
machine, and woodwork milling machine, |
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Metal handicraft |
Lathe, drilling machine, milling machine, |
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machine |
and grinding machine |
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Metal processing |
Wire drawing machine, press machine, |
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machine |
and winding/rewinding machine |
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Paper making and |
Printing machine, and paperwork machine |
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printing machine |
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Automatic service |
Health care tool (running machine and so |
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on), medical appliance (X-ray equipment |
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devices |
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and so on), and stage setting |
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Environment and |
Business-purpose washing machine, car- |
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life-related |
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wash machine, shutter, and dust collector |
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machine |
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1
E6582106
2.What is torque control
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.
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Main application |
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Inverter |
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M |
Group |
Examples |
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Textile machine |
Fiber machine, spinning machine, and |
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loom |
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Metal processing |
Wire drawing machine and winding/ |
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machine |
rewinding machine |
Torque command |
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Paper making and |
Printing machine and paperwork machine |
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printing machine |
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Automatic service |
Stage setting |
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devices |
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■ Parameter setting
Torque control
Title |
Parameter name |
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Adjustment range |
Unit |
Default setting |
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0: V/f constant |
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1: Variable torque |
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2: Automatic torque boost |
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3: Vector control 1 |
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4: Energy savings |
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5: Dynamic energy savings (for fan and pump) |
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Pt |
V/f Pattern |
6: PM motor control |
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0 |
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7: V/f 5-point setting |
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8: - |
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9: Vector control 2 |
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10: PG feedback control |
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11: PG feedback vector control (speed/torque) |
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12: - |
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0: - |
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1: Terminal RR |
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2: Terminal RX |
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3: Terminal II |
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4: Terminal AI4 (option) |
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F420 |
Torque command selection |
5 - 11: - |
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2 |
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12: |
F725 |
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13 - 19: - |
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20: Embedded Ethernet |
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21: RS485 communication (connector 1) |
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22: RS485 communication (connector 2) |
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23: Communication option |
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F421 |
Torque command filter |
0 - 1000 |
ms |
0 |
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F423 |
Tension control torque bias input |
Same as [F420] |
- |
0 |
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F424 |
Load sharing gain input |
Same as [F420] |
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0 |
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2
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E6582106 |
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Title |
Parameter name |
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Adjustment range |
Unit |
Default setting |
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0: - |
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1: Terminal RR |
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2: Terminal RX |
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F425 |
Fwd speed limit input |
3: Terminal II |
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0 |
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4: Terminal AI4 (option) |
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5 - 11: - |
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12: |
F426 |
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F426 |
Fwd speed limit level |
0.0 |
- UL |
Hz |
50.0/60.0 |
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0: - |
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1: Terminal RR |
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2: Terminal RX |
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F427 |
Rev speed limit input |
3: Terminal II |
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0 |
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4: Terminal AI4 (option) |
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5 - 11: - |
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12: |
F428 |
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F428 |
Rev speed limit level |
0.0 |
- UL |
Hz |
50.0/60.0 |
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0: - |
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1: Terminal RR |
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Speed limit center value input |
2: Terminal RX |
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F430 |
3: Terminal II |
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0 |
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select |
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4: Terminal AI4 (option) |
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5 - 11: - |
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12: |
F431 |
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F431 |
Speed limit center value |
0.0 |
- FH |
Hz |
0.0 |
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F432 |
Speed limit band |
0.0 - FH |
Hz |
0.0 |
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F435 |
Rotation direction limit during |
0: Fwd/Rev permit |
- |
0 |
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torque control |
1: Command direction permit |
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F441 |
Power running torque limit level 1 |
0.0 |
- 249.9 |
% |
250.0 |
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250.0: Disabled |
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F443 |
Regenerative torque limit level 1 |
0.0 |
- 249.9 |
% |
250.0 |
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250.0: Disabled |
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F444 |
Power running torque limit level 2 |
0.0 |
- 249.9 |
% |
250.0 |
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250.0: Disabled |
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F445 |
Regenerative torque limit level 2 |
0.0 |
- 249.9 |
% |
250.0 |
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250.0: Disabled |
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F446 |
Power running torque limit level 3 |
0.0 |
- 249.9 |
% |
250.0 |
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250.0: Disabled |
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F447 |
Regenerative torque limit level 3 |
0.0 |
- 249.9 |
% |
250.0 |
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250.0: Disabled |
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F448 |
Power running torque limit level 4 |
0.0 |
- 249.9 |
% |
250.0 |
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250.0: Disabled |
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F449 |
Regenerative torque limit level 4 |
0.0 |
- 249.9 |
% |
250.0 |
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250.0: Disabled |
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F455 |
Torque command polarity at Rev |
0: Regeneration at positive torque command |
- |
0 |
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1: Power running at positive torque command |
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F725 |
Panel torque command |
-250 - 250 |
% |
0 |
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F727 |
Panel tension torque bias |
-250 - 250 |
% |
0 |
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F728 |
Panel load sharing gain |
0 - 250 |
% |
100 |
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3
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E6582106 |
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Analog input |
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Title |
Parameter name |
Adjustment range |
Unit |
Default setting |
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F201 |
RR point 1 input value |
0 - 100 |
% |
0 |
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F202 |
RR point 1 frequency |
0.0 - 590.0 |
Hz |
0.0 |
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F203 |
RR point 2 input value |
0 - 100 |
% |
100 |
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F204 |
RR point 2 frequency |
0.0 - 590.0 |
Hz |
50.0/60.0 |
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F205 |
RR point 1 rate |
0 - 250 |
% |
0 |
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F206 |
RR point 2 rate |
0 - 250 |
% |
100 |
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F210 |
RX point 1 input value |
-100 - 100 |
% |
0 |
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F211 |
RX point 1 frequency |
0.0 - 590.0 |
Hz |
0.0 |
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F212 |
RX point 2 input value |
-100 - 100 |
% |
100 |
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F213 |
RX point 2 frequency |
0.0 - 590.0 |
Hz |
50.0/60.0 |
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F214 |
RX point 1 rate |
-250 - 250 |
% |
0 |
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F215 |
RX point 2 rate |
-250 - 250 |
% |
100 |
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F216 |
II point 1 input value |
0 - 100 |
% |
20 |
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F217 |
II point 1 frequency |
0.0 - 590.0 |
Hz |
0.0 |
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F218 |
II point 2 input value |
0 - 100 |
% |
100 |
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F219 |
II point 2 frequency |
0.0 - 590.0 |
Hz |
50.0/60.0 |
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F220 |
II point 1 rate |
0 - 250 |
% |
0 |
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F221 |
II point 2 rate |
0 - 250 |
% |
100 |
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F222 |
AI4 point 1 input value |
-100 - 100 |
% |
0 |
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F223 |
AI4 point 1 frequency |
0.0 - 590.0 |
Hz |
0.0 |
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F224 |
AI4 point 2 input value |
-100 - 100 |
% |
100 |
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F225 |
AI4 point 2 frequency |
0.0 - 590.0 |
Hz |
50.0/60.0 |
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F226 |
AI4 point 1 rate |
-250 - 250 |
% |
0 |
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F227 |
AI4 point 2 rate |
-250 - 250 |
% |
100 |
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