Allen-Bradley PowerFlex - Step 2 Total Inertia

2-4
Step 2 Total Inertia
J
T
= Total inertia reflected to the motor shaft (kg-m
2
or lb.-ft.
2
)
J
m
= Motor inertia (kg-m
2
or lb.-ft.
2
)
GR = Gear ratio for any gear between motor and load
(dimensionless)
J
L
= Load inertia (kg-m
2
or lb.-ft.
2
)
1.0 lb.-ft.
2
= 0.04214011 kg-m
2
Calculate Total Inertia:
Record Total Inertia:
Determine Values of Equation Variables
J
T
=
J
T
J
m
GR
2
J
L
×()+=
J
T
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