Aerotech Automation1 XC6e Series, Hardware Manual

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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 (
Table 2-55 ).
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
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