American Magnetics 4Q1010PS-430 Integrated Power Supply System - Manual (Page 92)

74 Rev. 5
Operation
Ramping Functions
If your magnet, Model 430 Programmer, and power supply were purchased
as a system from AMI, the setup menus are preset by AMI to match the
magnet purchased.
Table 3-5 provides a summary of the Model 430 Programmer setup
parameters for this example.
3.12 Ramping Functions
The ramping functions are used to control charging of the superconducting
load. The Model 430 Programmer allows piecewise-linear charging profiles
Table 3-5. Example Setup Configuration
Parameter Setting
Select Supply AMI 4Q06125PS
Stability Setting (%) 0.0
Coil Constant
a
(kG/A)
a. Also referred to as the Field-to-Current Ratio. Obtained by
dividing the rated field by the rated current if not explicitly
stated.
0.934
Current Limit (A) 85.600
PSwitch Installed YES
PSwitch Current (mA) 41.0
PSwitch Heated Time (sec) 20
PSwitch Cooled Time (sec) 20
PSwitch P/S Ramp Rate (A/sec) 10
Enable Quench Detect YES
Energy Absorber Present NO
Voltage Limit (V) 4.100
b
b. Value is the 2.1 V charge rate plus allowances for power
lead drop at the rated current.
Ramp Rate (A/sec) 0.2165
c
c. Value is obtained by dividing the magnet charging voltage
(V) by the magnet inductance (H).
Magnet Current Rating (A) 85.600
PSwitch Cooling Gain (%) 0.0%
Extern Rampdown Enabled YES