58
R
EV
9
A
MERICAN
M
AGNETICS
, I
NC
.
O
PERATION
: S
INGLE
-
KEY
C
OMMANDS
/ M
ENUS
If the
ESC
key is pressed while picklist entry is active, the setting will
revert to the previous value and picklist entry will be made inactive. Note
that if the
ESC
key is pressed when numeric entry is
not
active, the
current submenu will be exited and the next higher level submenu will be
restored (if it exists).
S
INGLE
-
KEY
C
OMMANDS
/ M
ENUS
All ramping controls (
PERSIST. SWITCH CONTROL
,
TARGET FIELD
SETPOINT
,
RAMP / PAUSE
and
RAMP TO ZERO
) are accessed with a
single keystroke. See page 110 for details of ramping controls. Below is
a brief summary of the function of each of these keys.
P
ERSISTENT
S
WITCH
C
ONTROL
K
EY
Pressing the
PERSIST. SWITCH CONTROL
key toggles the Model 430
Programmer persistent switch heater control function.
If the persistent switch heater is energized and this key is pressed, the
persistent switch heater is de-energized. The power supply output is
then maintained for the time set by the PSwitch Cooled Time setting
before being ramped down to zero at the PSw P/S Ramp Rate setting
(default rate is 10 A/sec).
If the persistent switch heater is de-energized and this key is pressed,
the power supply is ramped to the current present in the magnet when
the switch was cooled at the rate set by the PSw P/S Ramp Rate and
then the persistent switch heater is energized.
NOTE
Since the magnet is isolated from the power supply output while
the persistent switch is in the cooled state, it is possible to ramp
the power supply output current up/down at the much faster PSw
P/S Ramp Rate setting.
Pressing
SHIFT
followed by the
PERSIST. SWITCH CONTROL
key
toggles the Model 430 Programmer persistent switch heater between
energized (turned on) and de-energized (turned off). If the persistent
Single Input Keys
PAUSE
RAMP
TARGET
FIELD
SETPOINT
RAMP
TO
ZERO
PERSIST.
SWITCH
CONTROL
Summary of Contents for 430
Page 2: ......
Page 16: ...XVI REV 9 AMERICAN MAGNETICS INC FOREWORD SAFETY SUMMARY ...
Page 28: ...12 REV 9 AMERICAN MAGNETICS INC INTRODUCTION OPERATING CHARACTERISTICS ...
Page 64: ...48 REV 9 AMERICAN MAGNETICS INC INSTALLATION POWER UP AND TEST PROCEDURE ...
Page 208: ...192 REV 9 AMERICAN MAGNETICS INC SERVICE RETURN AUTHORIZATION ...
Page 248: ...232 REV 9 AMERICAN MAGNETICS INC APPENDIX SHORT SAMPLE MODE ...
