Drive is not normally available in any case, so the user is necessary to load, environmental requirements and the drive to have more understanding.
   1. Select the type of load and drive:
   Motor load is not driven by the same inverter requirements are not the same.
   A: fans and pumps are the most common load: the most simple inverter requirements, as long as the inverter capacity is equal to the capacity of the motor (compressor, deep water pumps, sand pumps, fast-changing musical fountain need to increase capacity) .
   B: Cranes class load: This type of load is characterized by a great impact on startup, thus requiring a certain margin inverter. Meanwhile, in heavy decentralization elbow, will energy feedback, so use the brake unit or using a shared bus approach.
   C: uneven load line: some load sometimes light, sometimes heavy, heavy load and you should follow to select the drive capacity, such as rolling mill machinery, grinding machinery, mixer, etc.
   D: high inertia loads: rotary kiln as centrifuges, presses, cement plants, such large load inertia, oscillation may therefore start the motor in regenerative deceleration. Should be slightly larger capacity drive to accelerate the launch, to avoid oscillation. With power brake unit removes the feedback.
   2. Long-term low-speed moving forward, due to higher motor heat, fan cooling capacity decreases, and therefore must be used to increase the reduction ratio of the mode or switch to 6 motor, the motor is running at higher frequencies nearby.
   3. Drive installation site must meet the requirements of the standard environment, or easily cause malfunction or shorten the life; the distance between the drive and the drive motor is generally not more than 50 meters, For longer distances you need to reduce or increase the carrier frequency output reactor option to operate properly.