Goodrive600 series high-performance multifunction VFD
Installation
-17-
4.2.1 Model selection flowchart
Determine the load layout and
motor requirements.
Start
Determine the motor type,
quantity, and specifications.
Select the inverter unit model.
Calculate the power.
Select the rectifier unit model.
Calculate the bus current.
Determine the combined
layout.
Model selection for the power
terminals externally
connected to the common
bus.
Frame design
End
Does the bus need to
connect to external power
terminals?
4.2.2 Load and motor selection
1) Determine the type and quantity of the motor according to the load and working method of the mechanical
equipment.
2) Determine the requirements of mechanical equipment for the motor power, torque, speed, starting, commissioning,
braking, overload, heating and temperature rise.
3) Select the motor rated power, rated voltage, and rated speed according to the motor product catalog.
4) Under the premise of fully satisfying the mechanical equipment load, select the motor capacity economically and
reasonably.
P
n
= (√3 × 𝑈
𝑛
× 𝐼
𝑛
× cosθ ×
η
)
𝑃
𝑛
– Rated power; 𝑈
𝑛
– 𝑅𝑎𝑡𝑒𝑑 𝑣𝑜𝑙𝑡𝑎𝑔𝑒; 𝐼
𝑛
– 𝑅𝑎𝑡𝑒𝑑 𝑐𝑢𝑟𝑟𝑒𝑛𝑡; cosθ– Power factor;
η
– Efficiency
4.2.3 Inverter unit selection
1) Determine the number of inverter units according to the number of motors, with the prerequisite that one motor
needs one inverter unit.
2) Select the power and model for the inverter units according to the motor rated power.
3) For details about inverter unit specifications, see section 3.3 Specifications.
4.2.4 Rectifier unit selection
1) Calculate the total rated power of all inverter units that have been selected.
