Table 2-54:
Maximum Recommended Shunt Current
Peak Current Option
Value
-10
10 A
-20
10 A
-30
10 A
-50
20 A
-100
20 A
Equation 1:
Calculate the kinetic energy of the system. Any energy that is not lost to the system could be
regenerated to the DC bus.
or
(for rotary motors)
(for linear motors)
J
M
rotor inertia (kg·m
2
)
J
L
load inertia (kg·m
2
)
ω
m
motor speed before deceleration (rad/s)
M
M
forcer mass (kg)
M
L
load mass (kg)
v
m
velocity (m/s)
Equation 2:
You will need a shunt resistor if the regenerated energy is greater than the Maximum Additional Storage
Energy that the internal bus capacitor can store (
).
C
bus capacitor (F) [4,000 µF or 1500 µF]
V
M
turn on voltage for shunt circuit (V) [380 V or 865 V]
V
NOM
nominal bus voltage (V) [160 V or 320 V, Typical]
[320 V or 680 V, Typical]
Table 2-55:
Maximum Additional Storage Energy for a Standard XC6e
Bus Voltage
Maximum Additional Energy
320 V
84 J
680 V
214 J
If a shunt resistor is required, calculate the value of resistance necessary to dissipate the energy.
Equations 3
,
4
, and
5
:
Calculate the parameters of the shunt resistor.
Equation 3:
P
PEAK
peak power that the regeneration circuit must accommodate (W)
t
D
deceleration time (s)
XC6e Hardware Manual
2.8. Shunt Options
www.aerotech.com
73
Содержание Automation1 XC6e Series
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Страница 62: ...Figure 2 27 PSO Interface 2 5 Auxiliary I O Connector XC6e Hardware Manual 62 www aerotech com...
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