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2.1.4. Internal Shunt Option [-SI
#]
The internal shunt option is used to limit the internal bus voltage caused by regeneration.
Regeneration occurs during deceleration as mechanical energy is converted to electrical energy and
stored in the internal power supply capacitors. Regeneration only occurs with PWM amplifier types
(XSP3) and not linear amplifier types (XSL3).
The maximum amount of energy that the iXR3/XR3 can safely absorb depends on the line voltage
and motor bus configuration as shown in
.
Table 2-3:
Maximum Energy That The iXR3/XR3 Can Safely Absorb During Regeneration
Bus Option
Input Voltage
Internal
Capacitance
Energy (J)
VB7 - with split bus
125 VAC
8000 uF / 200 VDC
35
VB7 - without split bus
125 VAC
16000 uF / 200 VDC
70
VB8 - with split bus
240 VAC
2300 uF / 400 VDC
52
VB8 - without split bus
240 VAC
4600 uf / 400 VDC
104
To determine if the shunt option is required, use one of the equations that follow to calculate the
stored mechanical energy. If the calculated value exceeds the value listed in
, the shunt
option is required. For multiple axes, add the energy contribution for each axis that shares a power
supply and decelerates simultaneously. Compare the sum against the maximum energy limits
shown in
For Linear Axes:
For Rotary Axes:
m
moving mass [kg]
J
inertia [kg·m 2 ]
v
speed [m/s]
w
speed [rad/s]
E
stored energy [J]
E
stored energy [J]
iXR3/XR3 Hardware Manual
2.1.4. Internal Shunt Option [-SI#]
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Содержание Automation1 iXR3
Страница 1: ...Revision 2 08 Automation1 iXR3 and XR3 Drive Racks HARDWARE MANUAL...
Страница 16: ...Figure 1 2 XR3 Connection Overview Chapter 1 iXR3 XR3 Overview iXR3 XR3 Hardware Manual 16 www aerotech com...
Страница 97: ...Figure 3 3 Slot Details iXR3 XR3 Hardware Manual 3 3 Amplifier Replacement www aerotech com 97...
Страница 98: ...This page intentionally left blank 3 3 Amplifier Replacement iXR3 XR3 Hardware Manual 98 www aerotech com...
Страница 104: ...This page intentionally left blank Appendix C Revision History iXR3 XR3 Hardware Manual 104 www aerotech com...
Страница 111: ...W Warranty and Field Service 99 iXR3 XR3 Hardware Manual Index www aerotech com 111...
Страница 112: ...Index iXR3 XR3 Hardware Manual This page intentionally left blank 112 www aerotech com...