Copley Controls Xenus XSL-230-18, Руководство по регенерации

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Regen Resistor Sizing and Configuration Xenus Regeneration Guide
2 Copley Controls Corp.
1.1: Regen Resistor Theory
When a load is accelerated electrical energy is converted into mechanical energy. During
deceleration the conversion is reversed. This is called regeneration. Some of this regenerated
energy is lost to friction in the mechanical system. More of this energy is converted to heat due to
I
2
R losses in the motor windings, cabling and drive electronics. The remainder of the energy is
added to the electrical energy already stored in the internal capacitor bank of the amplifier. The
result of this energy being added is an increase in the voltage on the capacitor bank.
If too much energy is added to the capacitor bank, the voltage will rise to a point where the
amplifier's over voltage protection will shut down the amplifier. To prevent this, a regen circuit
shunts some of the energy into an external resistor, known as a regen resistor, when the voltage
rises too high.
Xenus provides an internal transistor that is used in combination with an external resistor. Copley
Controls supplies compatible external resistors. When using a resistor acquired from another
source, be sure it meets the specifications described in
Regen Resistor Sizing and Configuration (p. 9) .
The amplifier protects the regen circuit against short circuit, and uses I
2
T peak current/time
algorithms to protect both the external resistor and internal transistor.
1.2: Regen Specifications
This section describes the regen resistor specifications.
1.2.1: Amplifier Regen Circuit Output Specifications
Model XSL-230-18 XSL-230-36 XSL-230-40
Continuous Power 2 kW 4 kW
Peak Power 5 kW 10 kW
Minimum Resistance
30 15
Minimum Resistor Wattage 25 W 50 W
Turn On Voltage +390 Vdc
Turn Off Voltage +380 Vdc
DC Bus Capacitance
1760
µ
F nominal
Regen Energy Absorption Capacity
Input Voltage 120 Vac
208 Vac
240 Vac
108 joules
57 joules
32 joules
1.2.2: Copley Standard Regen Resistor Specifications
Model Resistance Continuous Power Peak Power For Use With
XSL-RA-01 30 ohms 167 W 5 kW XSL-230-18
XSL-RA-02 15 ohms 200 W 10 kW XSL-230-36
XSL-230-40