PSC/PSI
PSC/PSI Optically Isolated Power Supply Control System
from Apogee Labs
The PSC/PSI system provides precise control for analog
or digitally controlled power supplies. One PSC master
controls up to six individual PSI units (one PSI per
power supply).
The PSC/PSI system is
used on the
Spallation Neutron Source with EPICS and Labview
software.
PSC/PSI is
also being in the process of being deployed at the
Institute of High Energy Phyics in Beijing, China as
a part of the
Beijing Electron Positron Collider (BEPC II)
project.
PSC
Power Supply Controller
- VME and chassis/rack
mount models
- Triggers: external,
internal, software
- Synchronous Timing
per PSC or across multiple PSCs
- 10KSamples/Second
highest burst mode rate
- Single multimode
fiber pair cabling
4000 meter theoretical limit, minimum 1500 meters in
use
- Circular buffers
hold 5458 good data sets for fault analysis
PSI
Power Supply Slave Units
- VME and chassis/rack
mount models
- Supports multiple
power supply models/manufacturers
- Analog Harness
- 16-bit DAC set
point control
- Four 16-bit ADC
readbacks
- Digital Harness
- 15 Control bits
- 16 Status bits
Custom Designs
While there is no reason
to replace a proven standard like PSC-PSI for most
deployments, some projects may require additional
features. For example, Apogee Labs has developed a
method to provide true RMS capability, which could be
incorporated into a customized design.
System Flowchart (click to expand)
Papers
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