American Magnetics 05200PS-430-601 High Stability Integrated Power Supply System - Manual (Page 63)

Rev. 5 45
Operation
LED Indicators : Current Leads Energized
a record of that event. Therefore the MAGNET IN PERSISTENT
MODE LED state will be incorrect (remain OFF ) when the Model
430 Programmer power is restored.
Caution
If the Model 430 Programmer power supply system is powered off
and moved from one magnet system to another, the MAGNET IN
PERSISTENT MODE LED may not correctly indicate the state of the
magnet system until the first time the persistent switch heater is
turned off.
Also, should the magnet quench while the magnet is in persistent
mode and the Model 430 Programmer is off, the persistent mode
indicator LED will be incorrect when the Model 430 Programmer is
turned on again.
The green MAGNET IN PERSISTENT MODE LED indicates that
the persistent switch heater is off, and that when it was turned off,
the magnet had greater than 100 mA of current flowing through it.
The state of this LED is kept in nonvolatile memory when the
Model 430 is powered off, so that the LED state is retained even
during a power cycle of the Model 430. Thus, the MAGNET IN
PERSISTENT MODE LED is an indicator that the magnet is
persistent and has at least some persistent field.
3.8.2.3 Current Leads Energized Indicator
The blue CURRENT LEADS ENERGIZED LED indicates that at
least 100 mA of current is flowing in the Model 430 power supply
system output current leads.
3.8.2.4 Magnet Quench Indicator
The red MAGNET QUENCH LED indicates that a magnet quench
condition has been detected. See section 3.15 on page 90 for details.
3.8.3 SHIFT Indicator
The green SHIFT LED indicates that the SHIFT key has been pressed, and
the next numeric keypad key pressed will actuate the shifted function
(shown in light blue) rather than the numeric keypad function. See
section 3.7 on page 37 for details of SHIFT key use.
3.9 Setup Menu
Setup of the Model 430 Programmer requires the user to navigate the
setup menu. Navigation of the setup menu is very intuitive — quite
similar, for example, to the use of a cell phone menu.