Rockwell Automation 150 MNL/SMC DIALOG+/APP-PROD GUIDE - Manual (Page 181)

Reference 10-19
Other Formulas Calculating Accelerating Force for Linear Motion:
Where:
F = Force (lbs.)
W = Weight (lb.)
D V = Change in Velocity (FPM)
t = Time to accelerate weight (seconds)
Where:
LRA = Locked Rotor Amperes
HP = Horsepower
kVA = Kilovolt-Amperes
E = EMF or Voltage (Volts)
Where:
60 Hz LRA = Locked Rotor Amperes
Freq. X = Desired frequency (Hz)
Engineering Constants Temperature
0° C = Freezing point of wate
32° F = Freezing point of water = ° C
10 ° C = Boiling point of water at atmospheric pressure
21 ° F = Boiling point of water at atmospheric pressure
1.8 ° WF = 1 ° WC
0.252 Calories = 1 BTU
–270 ° C = Absolute zero
–459.6 ° F = Absolute zero
Length
1,760 Yards = 1 Mile
25.4 mm = 2.54 cm = 1 in.
3 ft. = 1 Yard
3.2808 ft. = 1 m
39.37 in. = 1 m = 100 cm = 1000 mm
5,280 ft. = 1 Mile
0.62137 Miles = 1 km
F (Acceleration)
W
∆
V
×
1,93 3t
×
------------------- =
LRA
HP
Start kVA
HP
------------------
 
 
Ч
1,00
Ч
E 1.73
×
------------------------------------------------------ =
LRA @ Freq. X
60 Hz LR
60
Freq. X
--------------
--------------------- =