The regenerative AC/DC unit PSR3-000 can be used to power the ALTER PWM3D servo drives and servo drives of other manufacturers compatible with the voltage and current characteristics of the unit output via DC BUS (at 650Vdc).
The braking of three-phase electric motors generates energy which is generally converted into heat (dissipated) on braking resistors. However this energy can be "re-energized" by the use of the regenerative AC/DC unit PSR3-000, so it is not wasted in heat.
The regenerative AC/DC unit PSR3-000 manages the energy exchange with the servo drives line or the servo drives system by means of DC Bus voltage control. Moreover, with an intelligent conversion system based on IGBT technology, it provides a power exchange with the line of only active power (cosФ near to one) keeping sinusoidal line currents.
Features
Further information
Input voltage: 400 Vac three-phase ± 10%
Output voltage: adjustable from 600 Vdc to 650 Vdc
Maximum output current: from 45A to 180A
- LED indication of the following states of digital I/O logical states, operating states and alarms.
- Analog output indicating the current absorbed or regenerated in the line.
- 4-quadrant operation with the possibility of energy recovery in the line (elimination of dissipative braking systems with reduced overall dimensions).
- Control of the DC bus voltage to a settable value: this allows to compensate for any fluctuations in the mains voltage.
- Exchange with the network active power only.
- Sinusoidal line currents (low harmonic content).
- Three-phase mains inductance for PSR3 power supply
- Three-phase line filter
- External fuse holder
- Ultrafast fuses
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