Rev. 1 - 05/10/2021
OPERATING MANUAL
OPERATING MANUAL
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11.8 Starting in Closed-loop torque control (for 5.5 kW drivers only)
Unlike the less powerful drivers, the 5.5 kW drivers start the motor under closed-loop torque control from 0
rpm upwards.
If the rotor of the motor encounters some unexpected resistance to rotation, the driver increases gradually
the current until the motor can start correctly.
11.9 Stop speed (for 5.5 kW drivers only)
When the fan speed is set to 0 rpm and the value of “Stop Speed” is
0<Stop Speed<Max Speed,
then the fan decelerates gradually down to the Stop Speed and then the fan is left coasting to stop.
If the value of “Stop Speed” is
Stop Speed>>Max Speed (default configuration)
then the controlled deceleration is de-activated, and whenever the speed is reduced the fan is left coasting
down to the required speed or to stand-still.
If the value of “Stop Speed” is “0” and the set speed is also “0”, then the fan impeller is decelerated to stand-
still and then kept braked.