American Magnetics 05200PS-430-601 Integrated Power Supply System - Manual (Page 58)

40 Rev. 5
Operation
Shift Key Commands : Decrement Field
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 1 .
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
2
or Magnet Current Rating is achieved.
3.7.7 Field Units SHIFT-key
Use of the FIELD UNITS SHIFT-key provides a shortcut to the picklist
menu
3
for defining whether the field is specified and displayed in units of
kilogauss (kG) or tesla (T). The selected option also applies to remote
interface commands. The default setting is kilogauss.
3.7.8 Persistent Switch Heater Current SHIFT-key
Use of the P. SWITCH HTR. CUR. SHIFT-key provides a shortcut to the
menu
4
for setting persistent switch heater current. The value can be set to
between 0.0 and 125.0 mA. The default value is 10.0 mA unless preset by
AMI to match a specific superconducting magnet.
1. Refer to section 3.10.2.2 on page 52.
2. Refer to section 3.10.2.4 on page 54.
3. Refer to section 3.10.3.4 on page 62.
4. Refer to section 3.10.2.8 on page 57.
+50.00 A - Field Units
+0.50 Vs Kilogauss Tesla
+50.00 A — PSwitch Current (mA)
+0.50 Vs 10.0