Machine Data
80 of 91
Maschinendaten 12.0400 en
2.1.169 $AX_ENERGY_MAX[ ]
Maximum energy of the axis
Data type
real
min
Value
----
Unit
----
Value
max ----
Assignment
[1] axis 1 ... [6] axis 6
[7] external axis 1 ... [12] external axis 6
The value must be calculated on a case--by--case basis.
The maximum energy
E
max
of the axis consists of the potential energy
E
pot
and the kinetic
energy
E
kin
. It is the energy which must be taken up by the brake in the worst--case situation.
E
max
=
E
pot
+
E
kin
2.1.169.1Kinetic energy
The kinetic energy
E
kin
is the sum of translational
E
trans
and rotational energy
E
rot
:
E
kin
=
E
trans
+
E
rot
E
trans
=
m
2
⋅
v
2
max
E
rot
=
J
motor
2
⋅
ω
2
motor
+
J
gear
2
⋅
ω
2
gear
+
J
structure
2
⋅
ω
2
structure
ω
=
n
⋅
π
30
E
: Energy [J]
m
: Mass [kg]
v
: Velocity [m/s]
J
: Mass moment of inertia [kg m
2
]
ω
:
Angular velocity [1/s]
n
: Speed [rpm]
In the case of a cylindrical turntable of mass
m
and radius
r
, the following applies:
J
structure
=
m
2
⋅
r
2
