American Magnetics 05500PS-430-601 High Stability Integrated Power Supply System - Manual (Page 62)

44 Rev. 5
Operation
Shift Key Commands : Increment Field
When a quench detection has occurred, the Model 430 Programmer will
respond to no further input until the RESET QUENCH SHIFT-key is used,
or until the quench condition is cleared by a remote command. See Refer to
section 3.15 on page 92.
3.7.4 Increment Field SHIFT-key
The INCR. FIELD SHIFT-key is used to manually increase the field. This
is done at the defined ramp rate.
When the INCR. FIELD SHIFT-key is used, the current/field begins
ramping up. If the INCR. FIELD SHIFT-key is used again (while the
current/field is manually ramping up), the ramping will be paused.
Alternately, the RAMP / PAUSE key may be pressed to pause manual
ramping. Manual ramping will continue until paused or the Current
Limit 1 or Magnet Current Rating is achieved.
3.7.5 Field <> Current SHIFT-key
The FIELD <> CURRENT SHIFT-key is used to toggle between the use of
field units, either kG (kilogauss) or T (tesla), and the use of current units
(A)
2
. If the Model 430 Programmer is using field units (either kG or T) and
the FIELD <> CURRENT SHIFT-key is used, the Model 430 Programmer
will begin using current units (A). Conversely, if the Model 430 is using
current units (A) and the FIELD <> CURRENT SHIFT-key is used, the
Model 430 will begin using field units (either kG or T).
Note
The Model 430 Programmer cannot use field units unless a valid
coil constant has been entered 3 .
3.7.6 Decrement Field SHIFT-key
The DECR. FIELD SHIFT-key is used to manually decrease the current/
field. This is done at the defined ramp rate.
When the DECR. FIELD SHIFT-key is used, the current/field begins
ramping down. If the DECR. FIELD SHIFT-key is used again (while the
current/field is manually ramping down), the ramping will be paused.
Alternately, the RAMP / PAUSE key may be pressed to pause manual
ramping. Manual ramping will continue until paused or the Current
Limit
4
or Magnet Current Rating is achieved.
1. Refer to section 3.10.2.4 on page 58.
2. The value is always displayed in current (A) when an installed persistent switch is in
the cooled state since the value represents power supply current only, independent
of magnet current/field.
3. Refer to section 3.10.2.2 on page 56.
4. Refer to section 3.10.2.4 on page 58.