FR-CS84-295-60
High performance
Even with a 57% reduction in volume this inverter still offers high performance. Functions
available on this inverter include general-purpose magnetic flux vector control and auto
tuning functions. These functions ensure that these inverters can be used in applications
that require high starting torque, such as washing machines, agitators, and transfer
machines which includes conveyors, hoists, and elevators.
The high torque of 150% / 1 Hz is realized (when the slip compensation function is
valid).
Auto-tuning
With the “non-rotation” auto-tuning function the motor constant (R1) can be automatically
calculated.
There is also a brake unit connection which allows a brake unit to be connected using
terminal P/+ and terminal N/-. This is useful for applications that require regenerative
braking torque during deceleration, such as transfer machines and food machines. When
using the inverter with the brake unit, it is recommended the FR-CS84-050-60 inverter or
a higher capacity inverter is used.
Optimum excitation control continuously adjusts the excitation current to
an optimum level to provide the highest motor efficiency. For example, at 4% motor load
torque for a general-purpose motor, the motor efficiency under Optimum excitation
control is about 30% higher than the motor efficiency under V/F control. Optimum
excitation control is another option on this inverter. The excitation current is constantly
adjusted to its optimum value to drive the motor most efficiently. With a small load torque,
a substantial energy saving can be achieved.