RPSb range

High Precision Programmable Converters

For those customers that don’t need all RPSu features
  • Unipolar, bipolar with polarity reversal switch
  • Max current/voltage 300A / >100V.
  • High resolution.
  • Control modes: Current, Voltage and function generator. Other control modes are optional.
  • Real time ppm dynamic calculation.
  • Data base store 16GB > 30 years without erasing.
  • Active input filter and Power Factor 1.
  • Very low harmonic distortion.
  • Noise inmunity.
  • Long term stability (8h) 2 ppm.
  • Temperature stability 5.5 ppm/K. Zero thermal optional with thermalized peltier chamber.
  • 94.5 % efficiency.
  • Floating/ground connection manual. Commanded by software, optional.
  • Precision (nA) ground current monitoring for load ground insulation control and  ground fuse permanent control, optional
  • Dynamic cooling control. Maintenance warning with air flow control optional
  • User friendly local interface with 7 inch size display.
  • EPICS control.
  • MODBUS over TCP/IP control.
  • DCCT Technology.
  • Remote sensing input channels optional.
  • Small size and weight.
  • Centralized switch-on for a group of power sources.
RPSb range

Optional Modules

Additional control modes

Allowing multiple control modes: - Constant Power - Analog voltage - Analog current

Zero Thermal Drift

ADC and burden resistor used in data acquisition for the current digital control loop, are located inside a peltier chamber to ensure operation at 25 ºC with ±0.1ºC deviation. Thermal grease inside the chamber: assuring thermal distribution and avoiding relative humidity impact in the measurements.

Dynamic Air Flow monitoring and maintenance warning

Real time monitoring the internal air flow by anemometer (not by fan speed) Maintenance warning for filter cleaning.

Precision ground current monitoring (nA)

Permanent ground current monitoring for load´s ground insulation checking and ground fuse checking

Extra external interlocks

Extra external interlocks to provide 4 input and 3 output interlocks. One output interlock is solid state, works at fast speed. Two output interlocks are potential-free contacts, mechanical relays that work at slow speed. All interlock inputs are hardware (fast speed

Remote sensing

Remote voltage sensing to avoid voltage drop in cables by measuring real voltage on the load.

Active temperature monitoring

Key points temperature is monitored in the converter. Points such as semiconductors, high frequency transformer, input and output fans are controlled to ensure the correct operation of the device and to prevent possible failures. All the information is displayed in the Power Flow Screen.

Power lock

Allows centralized switch ON/OFF of a group of power supplies. The power button can be canceled allowing multiple devices to start simultaneously

External trigger

External 0 – 10 V trigger input for analog control

Long term data storage

RPSu stores many parameters in a database. Those parameters can be displayed on charts, user can choose which parameters to display. All parameters data are stored from the first day of operation of the RPSu. Those can be downloaded from USB port.

Noise immunity

· Switching semiconductors are driven by means of an optical fiber digital transmitter, achieving the highest performance in terms of speed, bandwith, attenuation and noise immunity.
· Optic fiber drivers.
· The power supply uses a high frequency transformer designed to minimize the dispersed flow, preventing induced currents and noise generation.

RPSb: EPOWER SYS range of high precision programmable DC power converters. Switched topology. For those customers that don’t need all RPSu features


High current output

  • RPSb can deliver up to 300A of maximum current and 60V of maximum voltage at 12Kw of maximum power.
  • As an option RPSb may be equipped with a bipolar output stage for two quadrant operations by means of a polarity reversal switch.


  • Particle accelerator magnets supply.
  • Test & Measurement systems.
  • Medical Imaging and treatment systems.
  • Semiconductor Processing.

Control modes

  • Constant current: often used to power magnets.
  • Constant voltage: normally used in industrial applications.

Accuracy and resolution

  • Long term stability 2ppm.
  • Readback Resolution: 31bits Slow accuracy loop @ 24bits Fast loop.
  • Current and Voltage Setting resolution: 22,5 bits <100uA.
  • Reliable performance is essential on scientific and industry applications.

Real time PPM calculation

RPSu displays in real time accuracy in PPM for the present load in screen and in graph. This feature is especially useful for adjusting control loops.

Power Flow Screen

Power Flow screen displays converter’s complete control status information in a unified screen



Programmable DC Power Converters 750W - 12kW RPSb Series


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