The FR-A800 inverter series lineup includes standard products from 0.4 to 500 kW, and can support vector control by installing dedicated vector motors and vector control I/F.
When using vector control:
Dedicated droop control Function Block (FB) for roll presses performs correction of slave rolls to counter torque deviations due to differences in circumferential speeds of top and bottom rolls.
The system can handle interference torque in the high-speed region and speed fluctuations in the low-speed region.
Stable high-accuracy tension control can be easily achieved using tension controllers. Torque control of powder clutches/brakes, AC servos, and vector inverters are all supported