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Installation Guide
INGENIA MOTION CONTROL
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This shunt transistor is automatically activated when the DC bus voltage exceeds a certain value defined by the user. Its PWM duty cycle can also be configured by
the user.
In general, a battery powered system is capable of absorbing regenerative energy and therefore no shunt resistor would be needed. However only use this option if
the battery is designed to accept negative current peaks and does not provide a reverse current protection. This information must be provided by the battery
manufacturer. Reverse currents might cause catastrophic battery failure.
Shunt Resistor Sizing
To size the shunt resistor, the parameters in next table should be known or estimated.
Abbreviation
Parameter
Typical Value
Electrical parameters
V
NOM
Nominal Bus voltage [V]
10 V to 130 V
V
MAX
Turn on voltage for shunt circuit, user configured maximum Bus voltage [V]
-
V
HYS
Hysteresis point of Bus voltage during deceleration cycles [V]
-
C
Bus capacitance [F]
>600 µF (Jupiter Internal)
DC
User configured shunt PWM Duty Cycle
0.5
I
PH
Phase current during deceleration [A
]
RMS
-
R
PH
Motor phase resistance line to line [Ω]
-
Mechanical parameters
ω
M
Motor angular velocity before deceleration [rad/s = rpm · 0.1047]
-