High efficiency, high stability, easiness of configuration and maintenance are the key features of this power supply (PS) system, which continues the CAEN ELS series of power supplies especially designed to operate in particle accelerator facilities like Synchrotrons and FELs.
The system houses up to 2 independent current-controlled bipolar power supply modules, rated at 60A and 20V, in a single 19-inch 3U standard crate (SY3662).
An auxiliary AC/DC converter (embedded in the bulk unit) powers the control circuits of the modules. Each A3660BS module implements a completely digital feedback control loop with a proprietary PWM generation technique: this makes the system extremely versatile and easy to “tune” to any load/magnet condition.
As for the SY3634 heterogeneous system, the modules are composed by a Control Board (CB) and a Power Board (PB) that are mechanically connected: communication between boards is almost exclusively performed by digital signals that avoid possible analog signal corruption and undesired noise pick-up.
Remote communication is guaranteed by means of an Ethernet 10/100 auto-sensing socket present on each module front panel. The communication protocol has compatibility with the SY3634 system modules i.e- A3605BS, A3610BS, A3620BS, A3630BS.
The PS can also be locally monitored/controlled via an encoder and a graphic color display featuring user-friendly menus.
Up to two auxiliary + DC bulk power supplies i.e. A3667 can be installed into the SY3662 crate, one for every installed channel. Cooling is performed by embedded fans, directly controlled by an output current-related hysteretic algorithm.
Software and drivers are available for different operating systems like MS Windows, Linux and Mac OS; these devices are also Epics- and Tango-compatible.
Commercially available system crate (SY3662), 60A – 20V modules (A3660BS) and auxiliary and bulk power supply modules (A3667B).
Output Current Range
Output Voltage Range
Maximum Output Power
Current Setting Resolution
Output Current Readback
Output Voltage Readback
Output Current Ripple
< 0.01 % / FS
Long Term Stability (8h)
< 0.002 % / FS
Closed Loop Bandwidth
> 1 kHz
4 Inputs: user-configurable "dry" contacts
2 Outputs: relay-type (magnetic + solid-state)
DC Link Under-Voltage
Earth Fault Current
Regulation Fault / Excessive Current Ripple
Auxiliary ADC Readbacks (16-bit)
DC Link Voltage
Ground Leakage Current
On-Module Self-Regulated Fans
Ethernet 10/100 Mbps
Point-by-Point Current Waveform Loading
User-definable interlock thresholds, active levels and timings
DSP and FPGA Firmware Remote Updates
90-260 V(AC) 47-63 Hz
Dimensions (SY3662 crate)
19" - 3U high Euro-mechanics rack
No documentation available.
No firmware or software available.