Rockwell Automation 150 MNL/SMC DIALOG+/APP-PROD GUIDE - Manual (Page 176)

10-14 Reference
AC Motor Formulas
Where:
Sync Speed = Synchronous Speed (RPM)
Freq = Frequency (Hz)
Where:
FL Speed = Full Load Speed (RPM)
Sync Speed = Synchronous Speed (RPM)
Where:
WK
2
= Inertia (ft.-lb.
2
)
Sync Speed
Freq 12
×
Number of Poles
--------------------------------- =
% Sli
Sync Spee dFL Spee –
Sync Spee
------------------------------------------------ 10
×
=
Reflected WK
2 WK
2
of Loa
( )
Reduction Rati
( )
2
-------------------------------------- =