American Magnetics 430, Инструкции по установке, эксплуатации и обслуживанию

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R
EV
9 1
A
MERICAN
M
AGNETICS
, I
NC
. I
NTRODUCTION
Introduction
M
ODEL
430 P
ROGRAMMER
F
EATURES
The AMI Model 430 Programmer is a sophisticated digital power supply
controller which allows an operator to manage a superconducting
magnet system with unprecedented accuracy and ease of use. The
Model 430 Programmer provides a degree of flexibility and accuracy
previously unavailable in an economical commercial product.
Typical components of a power supply system include a Model 430
Programmer with optional zero flux current sensing system (high-stability
option), one or more energy absorbers (for bipolar systems), and one or
more power supplies (unipolar or four-quadrant) to achieve the rated
system output current.
D
IGITALLY
-
C
ONTROLLED
The Model 430 Programmer is controlled by a microcomputer which per-
forms all analog data conversion, display/keypad functions, communica-
tions I/O, generation of analog programming signals for the external
power supply, and control law computations. The Model 430 Program-
mer incorporates digital signal processing (DSP) functions that provide
for accurate control, low drift, and flexibility of use.
S
UPERIOR
R
ESOLUTION
AND
S
TABILITY
The Model 430 Programmer incorporates high-resolution converters to
translate signals between the analog and digital domains. Precision
instrumentation techniques and potentiometer-free designs are
employed throughout the Model 430 Programmer to ensure accurate
signal translation for a wide range of conditions. The magnet current is
sampled at 24-bit resolution in hardware and is software-programmable
to 15-digits resolution. All pause and hold functions are performed in the
digital domain which provides for excellent stability and drift of the pro-
grammed magnetic field.