Programmer User guide

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Standard Model 430 Configurations: Programmable Limits
Magnet Current Control Parameter
±5 A ±10 A +100 A ±125 A +200 A ±250 A +300 A +500 A
Accuracy
a
(A) with Standard Shunt System:
0.002 0.004 0.04 0.05 0.08 0.1
n/a
b
n/a
b
Accuracy
c
(A) - High Stability System:
0.00025 0.0005 0.005 0.0063 0.01 0.0125 0.015 0.025
Stability
a
(A) with Standard Shunt System:
0.001
d
0.002
d
0.02
d
0.025
d
0.04
d
0.05
d
n/a
b
n/a
b
Stability
c
(A) - High Stability System:
0.00005 0.0001 0.001 0.00125 0.002 0.0025 0.003 0.005
Minimum Ramp Rate (mA/min): 0.01 0.01 0.01 0.1 0.1 0.1 0.1 0.1
Maximum Ramp Rate (A/sec): 1 1 1 10 20 20 30 30
a
After 20 minutes; stability and accuracy of systems 250 A and less
b
are improved more than a factor of 10 with the optional high-stability (flux-gate) system.
b
Systems larger than 250 A include the high stability (flux-gate) option as the standard configuration.
c
After 10 minutes;
d
Drift is further reduced to half that shown after 60 minutes.
Model 430 Power Supply Programmer
and
Integrated
Magnet Power
Supply Systems
Shown here: AMI’s most popular Magnet Power
Supply System, the Model 4Q06125PS-430
Model 430 Programmer Integrated Power Supply Systems
The AMI Model 430 Power Supply Programmer is a
sophisticated digital power supply controller that allows an
operator to manage a superconducting magnet system
with unprecedented accuracy and ease. The Model 430 is
designed to control a wide range of single, dual, and four-
quadrant linear and switching power supplies. The most
frequently used functions are accessible via single
keystroke or shift plus keystroke. For other functions, a
menu driven format guides the user to enter inputs using
the push button front panel interface.
AMI Integrated Magnet Power Supply Systems incorporate
the digitally based Model 430 Power Supply Programmer
which provides simplified, flexible operation with precise
low drift magnet current control. Standard systems are
mounted in rugged 19” rack-style cabinets. Standard 4-
quadrant systems range from 5 A to 250 A, while the
standard bipolar current ratings range from 100 A to 500 A.
Bipolar systems incorporate the AMI Model 601 Energy
Absorber to achieve bipolar operation and allow fast ramp
down with a unipolar power supply.
Multi-axis Systems
Multiple Model 430 Power Supply Programmers can control a multi-axis magnet system for virtual rotation of
the magnetic field. An infinite combination of field vectors is possible when the coils of the multi-axis magnet
system are energized and controlled independently and simultaneously.