Asynchronous motors in VFCPLUS control mode
The VFCPLUS control mode without encoder allows dynamic use of the entire speed range of the drive. Reversing and moving through the speed 0 are also possible.
However, continuous operation of asynchronous motors without encoder at low speeds is not possible. The minimum speeds that must not be permanently undercut during operation without encoder are:
- Motoring operation: 1% of the asynchronous motor nominal speed
- Regenerative operation: 10% of the asynchronous motor nominal speed
