7, below, Operation, 00 a – American Magnetics 03300PS-430-601 High Stability Integrated Power Supply System User Manual
Page 106: Mode: paused +3.50 vs pswitch heater: on
88
Rev. 5
Operation
Persistent Switch Control : Exiting Persistent Mode
7. After
ENTER
is pressed, the default field/current status screen is
displayed with the power supply in the pause mode:
3.13.4 Toggling the State of the Persistent Switch Heater
The state of the persistent switch can be toggled by pressing
SHIFT
and
then the
PERSIST. SWITCH CONTROL
key. By toggling the state of the
heater in this manner, there will be no power supply ramping or other
automatic functions.
3.13.4.1
Entering Persistent Mode without altering the power
supply current output
1. Place the Model 430 Programmer in the HOLDING or
PAUSED mode at the desired field or current.
2. Press the
SHIFT
and then the
PERSIST. SWITCH
CONTROL
key to turn off the persistent switch heater
current. Note that the Model 430 Programmer will enter the
COOLING SWITCH mode and disallow any ramping during
the switch cooling period.
3. If magnet current is greater than 100 mA when the switch
heater current is turned off, the
MAGNET IN PERSISTENT
MODE
LED will illuminate.
3.13.4.2
Exiting Persistent Mode without altering the power sup-
ply current output
Caution
To avoid damage to the magnet or triggering protection circuits on
the magnet, the current in the power supply should match the
current that was flowing in the magnet when the persistent mode
was entered.
Note
For the procedure to display the magnet current that was
established when the persistent switch was cooled, refer to
1. Place the Model 430 Programmer in the HOLDING or
PAUSED mode at the desired field or current.
+50.00 A
P
Mode: Paused
+3.50 Vs
PSwitch Heater: ON