5 field <> current shift-key, 6 decrement field shift-key, 7 field units shift-key – American Magnetics 4Q1005PS-430 Integrated Power Supply System User Manual

Page 56: D 3.7.5, Operation

Rev. 5

Operation

Shift Key Commands : Field <> Current

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)

. 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

3.7.6

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

or Magnet Current Rating is achieved.

Note

If the current/field is negative, using the

DECR. FIELD

SHIFT-key

to decrease (make less positive) the current/field, the magnitude of

the current/field increases.

3.7.7 Field

Units

SHIFT-key

Use of the

FIELD UNITS

SHIFT-key provides a shortcut to the picklist

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.

1. 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.

2. Refer to section 3.10.2.2 on page 50.
3. Refer to section 3.10.2.4 on page 52.
4. Refer to section 3.10.3.4 on page 60.

+50.00 A - Field Units

+0.50 Vs

Kilogauss

Tesla