User guide
Table Of Contents
- Table of Contents
- List of Figures
- List of Tables
- Foreword
- 1 Introduction
- 1.1 Model 4Q1010PS-430 Integrated Power Supply System Features
- 1.1.1 Digitally-Controlled
- 1.1.2 Superior Resolution and Stability
- 1.1.3 Intuitive Human-Interface Design
- 1.1.4 Flexibility
- 1.1.5 Standard Remote Interfaces
- 1.1.6 Programmable Safety Features
- 1.1.7 Condition-Based Magnet Auto-Rampdown
- 1.1.8 Model 4Q1010PS-430 General Description
- 1.1.9 Power Supply System Rack Front Panel Layout
- 1.2 Model 430 Front Panel Layout
- 1.3 Model 430 Rear Panel Layout
- 1.4 Power Supply Unit Front Panel Layout
- 1.5 System Specifications @ 25 C
- 1.6 Operating Characteristics
- 1.1 Model 4Q1010PS-430 Integrated Power Supply System Features
- 2 Installation
- 3 Operation
- 3.1 System Power On/Off Sequence
- 3.2 Model 430 Programmer Default Display
- 3.3 Entering Numeric Values
- 3.4 Using Fine Adjust Knob to Adjust Numeric Values
- 3.5 Entering Picklist Values
- 3.6 Single-key Commands / Menu
- 3.7 SHIFT-key Commands / Menus
- Figure 3-5. SHIFT-Key Functions
- 3.7.1 Ramp Rate SHIFT-key
- 3.7.2 Voltage Limit SHIFT-key
- 3.7.3 Reset Quench SHIFT-key
- 3.7.4 Increment Field SHIFT-key
- 3.7.5 Field <> Current SHIFT-key
- 3.7.6 Decrement Field SHIFT-key
- 3.7.7 Field Units SHIFT-key
- 3.7.8 Persistent Switch Heater Current SHIFT-key
- 3.7.9 Stability SHIFT-key
- 3.7.10 Vs <> Vm SHIFT-key
- 3.7.11 Volt Meter SHIFT-key
- 3.7.12 Fine Adjust SHIFT-key
- 3.7.13 Persist. Switch Control SHIFT-key
- 3.8 LED Indicators
- 3.9 Setup Menu
- 3.10 Setup Submenu Descriptions
- Figure 3-7. Setup Menu Structure
- 3.10.1 Supply Submenu
- 3.10.2 Load Submenu
- 3.10.2.1 Stability Setting
- 3.10.2.2 Coil Constant
- 3.10.2.3 Magnet Current Rating
- 3.10.2.4 Current Limit
- 3.10.2.5 Calculate Magnet Inductance
- 3.10.2.6 PSwitch Installed
- 3.10.2.7 PSwitch Current Detect (mA)
- 3.10.2.8 PSwitch Current
- 3.10.2.9 PSwitch Heated Time
- 3.10.2.10 PSwitch Cooled Time
- 3.10.2.11 PSwitch Power Supply Ramp Rate
- 3.10.2.12 PSwitch Cooling Gain
- 3.10.2.13 Enable Quench Detect
- 3.10.2.14 Energy Absorber Present
- 3.10.2.15 Enable External Rampdown
- 3.10.3 Misc Submenu
- 3.10.4 Net Settings Submenu
- 3.10.5 Net Setup Submenu
- 3.11 Example Setup
- 3.12 Ramping Functions
- 3.13 Persistent Switch Control
- 3.14 Ramping Functions Example
- 3.15 Quench Detection
- 3.16 External Rampdown
- 3.17 Summary of Operational Limits and Default Settings
- 4 Remote Interface Reference
- 4.1 SCPI Command Summary
- 4.2 Programming Overview
- 4.3 RS-232 Configuration
- 4.4 Ethernet Configuration
- 4.5 Command Reference
- 4.5.1 System-Related Commands
- 4.5.2 Status System Commands
- 4.5.3 SETUP Configuration Commands and Queries
- 4.5.4 Protection Commands and Queries
- 4.5.5 Ramp Configuration Commands and Queries
- 4.5.6 Ramping State Commands and Queries
- 4.5.7 Switch Heater Command and Query
- 4.5.8 Quench State Commands and Queries
- 4.5.9 Rampdown State Queries
- 4.5.10 Trigger Functions
- 4.6 Error Messages
- 5 Service
- 5.1 System Component Maintenance
- 5.2 Troubleshooting Hints
- 5.2.1 Electrostatic Discharge Precautions
- 5.2.2 The Model 430 does not appear to be energized
- 5.2.3 FAILURE TO LOAD message displayed after power-up
- 5.2.4 Power supply unstable - magnet voltage oscillates
- 5.2.5 The power supply system will not charge the magnet.
- 5.2.6 Cannot charge the magnet at the selected ramp rate.
- 5.2.7 Cannot discharge the magnet at the selected ramp rate
- 5.2.8 Cannot charge the magnet to desired field.
- 5.2.9 Current in only one direction from 4-quadrant supply
- 5.2.10 Cannot place the magnet in persistent mode.
- 5.2.11 Cannot bring the magnet out of persistent mode.
- 5.2.12 The magnet quenches for no apparent reason
- 5.2.13 Cannot lower the magnet field
- 5.2.14 There is excessive LHe boil-off during operation.
- 5.2.15 Cannot display the magnetic field strength, only current
- 5.2.16 Cannot use remote communications commands.
- 5.2.17 Magnet current drifts unacceptably while PSwitch cooling
- 5.2.18 Model 430 appears to lock up when connecting to network
- 5.3 Additional Technical Support
- 5.4 Return Authorization
- Appendix
- A.1 Magnet Station Connectors
- A.2 LHe Level / Temp Connectors
- A.3 Programmer Shunt Terminals
- A.4 Program Out Connector
- A.5 Quench I/O Connector
- A.6 Aux Inputs Connector
- A.7 Ethernet Connector
- A.8 RS-232 Connector
- A.9 Abbreviations and Acronyms used in this Manual
- A.10 Model 430 Programmer Specifications
- A.11 Power Supply Details
- A.12 Remote Computer Communication with the Model 430
- A.13 Upgrading the Model 430 Firmware via FTP
- A.14 Upgrading the Model 430 Firmware via Flash Card Reader
- A.15 Model 430 Remote Control Application
- A.16 Model 430IP Power Supply Programmer
- A.17 Persistent Switch Operation Flowchart
- Index
Rev. 5 33
Operation
Shift Key Commands : Ramp Rate
menu, for example, press the SHIFT key, and then press the VOLTAGE
LIMIT
key (also the 2 key). Note that some of the SHIFT-key menus can
also be accessed using the setup menu.
Pressing the
ESC key or the SHIFT key a second time will clear the SHIFT
function and return the keypad to it's numeric function.
3.7.1 Ramp Rate SHIFT-key
Use of the RAMP RATE SHIFT-key provides a menu for setting ramp
rate(s). The ramp rate may be set
1
within the range specified for the
specific Model 430 Programmer configuration (refer to specifications on
page 8). If field units are being used, then the ramp rate setting is
displayed and set in units of kG/sec or T/sec). The allowable range is then
defined by the setting of the coil constant and the allowable range of the
ramp rate in terms of current as specified in the table on page 8. If the
Ramp Segments value
2
is greater than 1, then the menu also allows
setting of the field or current range for which each ramp rate is to be used.
The Model 430 Programmer will ramp at the specified rate if the available
compliance of the power supply is sufficient and the Voltage Limit is not
exceeded. The Model 430 automatically decreases the ramp rate internally
during operation if either the available compliance of the power supply is
insufficient, or the Voltage Limit is active.
3.7.1.1 Ramp Rate SHIFT-key Example
An example (using a magnet with rated current of 60 A
3
) will
illustrate the use of the ramp rate menus. The example assumes
that the field/current units have been set to amperes. and the ramp
segments value has been set to 3. Segmented magnet current
ramping is chosen with rates as follows:
1. ±0.2 A/s from 0 to ±55 A
2. ±0.1 A/s from ±55 to ±58 A
3. ±0.05 A/s above ±58 A.
In the following discussion, the fine adjust knob
4
can optionally be
used for ramp rate adjustment if the persistent switch is heated (or
if no persistent switch is installed). If the user attempts to edit
ramp rate segments using the fine adjust knob while an installed
switch is cooled, the Model 430 Programmer will produce one beep
to indicate an error
5
. Similarly, if the switch is heated (or no switch
1. Using numerical keys per section 3.3 on page 25 or the fine adjust knob (see
section 3.4 on page 26).
2. Refer to section 3.10.3.2 on page 59.
3. In this example, both the Current Limit and Magnet Current Rating are set at the
rated magnet current of 60 A.
4. Refer to section 3.4 on page 26.