American Magnetics 4Q1010PS-430 Integrated Power Supply System - Manual (Page 36)

18 Rev. 5
Installation
Power-Up Procedure
appears to lag, then decrease the stability setting until the system is
responsive. If the current appears to oscillate, increase the stability setting
until the oscillations are damped.
Note
If you have purchased a superconducting magnet with the Model
430 Programmer, AMI will normally provide a recommended
stability setting for optimal operation of the magnet system. If you
operate the Model 430 Programmer with a different load, be sure to
restore the stability setting to the recommended value when the
superconducting magnet is reconnected.
The stability setting is essentially manual control of the gain of an
integrator present in the control logic of the Model 430 Programmer.
Increasing the stability setting decreases the gain of the integrator.
2.9 Power-Up and Test Procedure
It is important to verify that the magnet system has been properly
connected before the superconducting magnet is energized. This is
especially recommended if the system is to be controlled via a computer
since this setup will allow software debugging without the potential for
damage to the magnet. The following procedures will assist the user in the
verifying key system components.
1. Using the appropriate diagram from section 2.5 as a guide, verify
all system components are connected as shown. If there is any
doubt as to the correct connection of a component, contact an AMI
Technical Support Representative. The user may be required to
properly make a few connections between the various system
components which were disconnected to facilitate packing and
shipping.
2. Temporarily place a short across the magnet current terminals.
Often this is most easily accomplished by unfastening the heavy
cables from the magnet current leads and fastening them together. 1
This will allow rudimentary power supply checks without
energizing the superconducting magnet.
3. Energize the Model 430 Programmer by placing the power switch
in the I (ON) position.
1. If the system shipped with CamLoc quick-disconnect connectors, they may be
quickly disconnected from the magnet leads and connected together.