Lenze g350-B Series, Проектное планирование

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Dimensioning
Necessary input variables
Mains operation
Max. load torque M
L,max
Nm
Max. load speed n
L,max
rpm
External moments of inertia J
ext
kgcm
2
Operating time / day BD h
Switching operations per hour S
h
1/h
Determine correction factor
Site altitude Amsl H m ≤ 1000 ≤ 2000 ≤ 3000 ≤ 4000
Correction factor k
H
1 0.95 0.9 0.85
Determine product on the basis of the forces
Transmission element Gear wheels Sprockets Toothed belt pulleys Narrow V-belt
( depending on the pre-
loading)
( depending on the
preloading)
Additional radial force factor f
z
≥ 17 teeth = 1.0 ≥ 20 teeth = 1.0 With belt tightener= 2.0 -
2.5 1.5 - 2.0
< 17 teeth = 1.15 < 20 teeth = 1.25 Without belt tightener= 2.5
- 3.0
< 13 teeth = 1.4
Calculation Check
Radial force
F
rad
N
´
= ´
L,max z
rad
M f
F 2000
dw
F
rad
≤ f
w
x F
rad,max
Axial force
F
ax
N
F
ax
≤ F
rad,max
x 0.5
dw Effective diameter of transmission element
4
Radial forces and axial forces
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26
Calculate output torque
Calculation
Necessary output torque
M
2
N
m
³
L,max
2
H
M
M
k
Calculate intensity
Calculation
Intensity
F
I
+ + +
= £
+ +
L
M B Z
2
I
M B Z
J
J J J
i
F 1.25
J J J
i Ratio of gearbox J
B
Moment of inertia of brake
J
L
Moment of inertia of the load J
Z
Additional moment of inertia (handwheel, 2nd shaft end ...)
J
M
Moment of inertia of motor
Determine the product on the basis of the data obtained from the selection tables
Selection table Check
Output speed n
2
rpm n
L,max
≈ n
2
Output torque M
2
Nm M
L,max
≤ M
2
Selection tables
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29
Project planning
Project planning process
Dimensioning
19