86
The above figure shows an example of the operating frequency during power running.
During regenerative braking, control is performed in such a way as to increase the
frequency.
The droop function is activated above the torque current set with f715.
The amount of droop frequency Δf varies depending on the amount of torque current T1.
Note: If the base frequency exceeds 100Hz, count it as 100Hz. Control is exercised
between the starting frequency (f503) and the maximum frequency (f007).
[An example of calculation]
Parameter setting:Base frequency f101=60 (Hz), droop gain f714=10 (%)
Droop insensitive torque band f715=30 (%).
Droop frequency Δf (Hz) and operating frequency f1 when command frequency f0 is 50
(Hz) and torque current T1 is 100 (%) are as follows.
Droop frequency Δf (Hz)=vl × f714 × (T1 – f715)
=60 (Hz) × 10 (%) × (100 (%) - 30 (%))
=4.2 (Hz) Operation frequency f1 (Hz) = f0 - Δf = 50 (Hz) - 4.2 (Hz)=45.8 (Hz)
NO. Parameter Name Setting Range Default
f716 Preset-speed 1 f009~f008 3.0
f717 Preset-speed 2 f009~f008 6.0
f718 Preset-speed 3 f009~f008 9.0
f719 Preset-speed 4 f009~f008 12.0
f720 Preset-speed 5 f009~f008 15.0
f721 Preset-speed 6 f009~f008 18.0
f722 Preset-speed 7 f009~f008 21.0
f723 Preset-speed 8 f009~f008 24.0
f724 Preset-speed 9 f009~f008 27.0
f725 Preset-speed 10 f009~f008 30.0
f726 Preset-speed 11 f009~f008 33.0
f727 Preset-speed 12 f009~f008 36.0
f728 Preset-speed 13 f009~f008 39.0
f729 Preset-speed 14 f009~f008 45.0
f730 Preset-speed 15 f009~f008 50.0
To Next Page
Loading...
General