Product Overview PS120050 PS135040 Rated at 6-kW output power, it is based on the new three-level ZVS topology that guarantees high efficiency, great performances, high stability and maintenance. Especially designed to operate in particle accelerator facilities. Extreme versatility and ease of “tuning” to any load/magnet condition thanks to the digital current control implementation. Features t Different versions for different output current and output voltage ratings t Digital feedback current control loop t High efficiency (up to 90%) t New three-level ZVS topology t Long-term output stability t Ethernet connectivity t Graphic color OLED and encoder t 208VAC and 400VAC input versions t On-module speed-regulated fans t Internal temperature monitoring The DiRAC power unit is based on the recent AC-DC three-level ZVS converter topology and it is composed of a PFC stage combined with a buck converter into a single stage for a rated 6kW output power (PS120050 version, 120A@50V). The resonant nature of this power supply guarantees high efficiency, a crucial factor to take into account when maintaining into operation a large number of power supplies in the same facility. t External configurable interlocks (I/O) t Epics- and Tango-compatible Applications t Magnet Power Supplies The current control loop of the DiRAC, as for all other CAENels power supplies, is completely digital in order to guarantee the same configurability and ease of tuning to any load condition (resistive and inductive parts). t Accelerator Machine Power Supplies t Current Waveform Generation t Nuclear Magnetic Resonance (NMR) A new feature of the DiRAC units is the current control algorithm, which is performed directly by the on-board FPGA: the parallel nature of the computation allows to greatly reduce time delays in the feedback loop. Output current setting is performed by the use of a DCCT (DC Current Transformer) that presents high long-term stability, good bandwidth, low noise and extremely low TC (Temperature Coefficient). The use of state-of-the-art 18-bit SAR ADCs for current and voltage sensing guarantees a reduced group delay and thus higher bandwidth. Internal interlocks and protections are redundant and distributed inside the DiRAC units – e.g. the temperature is monitored by six different sensors placed in different sections of the board and the internal heatsinks. The control board of the unit, hosting the FPGA, the diagnostic ADCs, Communication sections, local control + display managing and other ancillary parts is the same used for the SY3634 and SY3662 system modules. Command syntax and communication protocol compatibility are maintained with respect to the other CAENels PS systems. Commercially available modules are PS120050 (120A@50V) and PS135040 (135A@40V) in “A” and “E” versions. Technical Specifications Rated Output Current Rated Output Voltage About CAENels Input Voltage CAENels is a dynamic company that provides power supplies and state-of-the-art dedicated electronic systems to the particle accelerator community - e.g. synchrotron light sources and Free Electron Laser (FEL) facilities. t .BHOFU1PXFS4VQQMZ4ZTUFNT t #FBNMJOF&MFDUSPOJD*OTUSVNFOUBUJPO t 1SFDJTJPO$VSSFOU5SBOTEVDFST t )JHI7PMUBHF%FEJDBUFE4ZTUFNT PF (Power Factor) Topology Maximum Output Power Maximum Inductive Load Current Setting Resolution Output Current Read-Back Output Voltage Read-Back Accuracy Current Control Range Output Ripple (0-10kHz) Long Term Stability (8h) AC/DC Efficiency External Interlocks/States Internal Interlocks CAEN els d.o.o. Kraška ulica, 2 6210 - Sežana Slovenija Phone +386 (0)5 7313 585 Fax +386 (0)5 7313 587 [email protected] Hardware Protections Auxiliary ADC Read-Backs Cooling Connection Extra-Features www.caenels.com Dimensions PS120050: 120 A PS135040: 135 A PS120050: 50 V PS135040: 40 V A- version: 3 × 208 V(AC) @ 47-63 Hz E- version: 3 × 400 V(AC) @ 47-63 Hz > 0.98 Three-Level ZVS Converter up to 6 kW 1 H (more upon request) 18 bit 20 bit 20 bit < 0.01 % 5 % - 100 % 100 ppm / FS 20 ppm / FS up to 90% 4 Inputs: user-configurable "dry" contacts 2 Outputs: user-configurable Over-Temperature Earth Fault Current Regulation Fault Fan Fault AC Fault Load energy dumping (free-wheeling) Circuit breaker Internal Temperatures Earth Leakage Current Air convection - self-regulated internal fans Ethernet TCP-IP / UDP Soft-start mode Point-by-Point Current Waveform Loading User-definable interlock thresholds, active levels and timings FPGA Firmware Remote Update User-settable Slew-Rate value 19” wide – 3U high Euro-mechanics rack DiRAC Rear view Copyright © CAENels d.o.o. - 2013 All rights reserved. Information in this publication supersedes all earlier versions. Specifications subject to change without notice. Printed in May 2013