American Magnetics 05100PS-430-601 High Stability Integrated Power Supply System - Manual (Page 21)

Rev. 5 3
Introduction
General Description
more detail in section A.6.2 on page 157 of the Appendix. Contact AMI for
more information.
In addition to low LHe level, this input to the Power Supply System can be
used with other instrumentation as well. Other uses for this input include
faults from a cryocooler, temperature instrumentation, etc.
1.1.8 Model 05100PS-430-601 General Description
A Model 430 Power Supply Programmer and AMI Model 08150PS 1200
Watt unipolar voltage and current stabilized DC Power Supply are
configured with a Model 601 Energy Absorber to make up the +100 A, ±5
Vdc bipolar system designated as 05100PS-430-601. The power supply is
remotely controlled by the Model 430 Power Supply Programmer.
As a unipolar power supply, the Model 08150PS can only source
1
(not sink)
power. However, when the power supply is used in conjunction with the
AMI Model 601 Energy Absorber and controlled by an AMI Model 430
Power Supply Programmer, the result is the bipolar Model 05100PS-430-
601 integrated power supply system that is ideal for driving inductive
loads such as large magnets or motors.
The power supply is controlled by a ±10 Vdc remote analog signal supplied
by the Model 430 Programmer and applied to the power supply analog
input. Programming and control of the current loop (composed of the
magnet, power supply, Model 601 Energy Absorber, and Model 430
Programmer zero flux device), is provided by a Model 430 ramp-generated
current reference with parameters as set by the user in the Model 430. The
Model 430 compares the measured current (via the zero flux device) with
the current reference to provide precise closed-loop control of the actual
current.
The power supply is operated in voltage-voltage 2 programming mode, with
the Model 430 Programmer output scaled to operate the power supply over
its available voltage output range. The Programmer signal will continually
adjust the power supply output voltage to automatically regulate the
power supply current; precise linear power supply current control will
result as long as the system voltage and current demand do not exceed the
power supply rating or load limiting parameters.
1. The power supply is operating as a source if the current direction and voltage polar-
ity are the same (i.e., the situation that would exist when supplying a resistive load).
If the voltage polarity and current direction are opposite, the supply is operating as
a sink.
2. Voltage reference controlling voltage output.