Fuji Electric FRENIC-HVAC User Manual page 103

SELECTING OPTIMAL MOTOR AND
This chapter provides you with information about the inverter output torque characteristics, selection
procedure, and equations for calculating capacities to help you select optimal motor and inverter models. It
also helps you select braking resistors.
3.1 Selecting Motors and Inverters ................................................................................................................... 3-1
3.1.1 Motor output torque characteristics ..................................................................................................... 3-1
3.1.2 Selection procedure ............................................................................................................................. 3-3
3.1.3 Equations for selections ...................................................................................................................... 3-6
3.1.3.1 Load torque during constant speed running ................................................................................ 3-6
3.1.3.2 Calculation of acceleration/deceleration time ............................................................................. 3-7
3.1.3.3 Heat energy calculation of braking resistor ............................................................................... 3-10
INVERTER CAPACITIES
Contents
Chapter 3