Installation – American Magnetics 05200PS-430-601 High Stability Integrated Power Supply System User Manual
Page 40
22
Rev.
3
Installation
Power-Up Procedure
6. Verify the various setup menu values for the system (with the
exception of the stability setting, which is to be temporarily left at
100%). If the power supply system was purchased with an AMI
magnet, AMI has preset the setup menu values for proper
operation. See sections 3.3, 3.5, 3.9 and 3.10 for more discussion of
the setup menu values and their entry into the Model 430
Programmer.
7. Set the Model 430 Programmer to display current (rather than
field). Refer to sections 3.2.1 and 3.7.5.
8. Set the ramp rate to 1 A/sec. Refer to sections 3.3 on page 29 and
9. Set the target current to 10 A. Refer to sections 3.3 on page 29 and
10. If a Persistent Switch is installed, set the PSw P/S Ramp Rate to 10
A/sec. Refer to paragraph 3.10.2.11 on page 60
11. Initiate ramping to the target current by pressing the
RAMP /
PAUSE
key (status indicator changes from
P
to ).
12. The system should ramp to 10 A in approximately 10 seconds.
Verify this is the case (if a PSwitch is installed and in the cooled
state, ramp time to 10 A should be slightly less than 2 seconds).
Note
With an energy absorber unit is connected, the Model 430
Programmer may take significantly longer to ramp the current to 10
A. The Model 430 must first develop a supply output voltage to
overcome the forward voltage drop of a connected energy absorber.
During actual magnet operation, the presence of an energy absorber
will not significantly delay the ramping operation since the Model
430 control gain is increased by orders of magnitude when an
inductive load is connected (unless stability setting is 100%).
13. When the target current is achieved, the
FIELD AT TARGET
LED
will be illuminated. The display should show “
+10.00 A -
”
indicating that the Model 430 Programmer is in the holding mode
at the target current value (+10.00 A).
Note
There may be a discrepancy between the current shown on the power
supply display
1
and the current displayed on the Model 430
1. Not all power supplies have a local current readout.