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American Magnetics 05100PS-430-601 Installation, Operation And Maintenance Instructions

High stability integrated power supply system
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EXCELLENCE IN MAGNETICS AND CRYOGENICS
MODEL 05100PS-430-601
HIGH STABILITY
INTEGRATED POWER
SUPPLY SYSTEM
INSTALLATION, OPERATION, AND
MAINTENANCE INSTRUCTIONS
American Magnetics, Inc.
P.O. Box 2509, 112 Flint Road, Oak Ridge, TN 37831-2509, Tel: 865-482-1056, Fax: 865-482-5472
Rev. 5; Issue: November 28, 2011

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Summary of Contents for American Magnetics 05100PS-430-601

  • Page 1 EXCELLENCE IN MAGNETICS AND CRYOGENICS MODEL 05100PS-430-601 HIGH STABILITY INTEGRATED POWER SUPPLY SYSTEM INSTALLATION, OPERATION, AND MAINTENANCE INSTRUCTIONS American Magnetics, Inc. P.O. Box 2509, 112 Flint Road, Oak Ridge, TN 37831-2509, Tel: 865-482-1056, Fax: 865-482-5472 Rev. 5; Issue: November 28, 2011...

  • Page 3: Table Of Contents

    Foreword................... xiii Purpose and Scope ................xiii Contents of this Manual ..............xiii General Precautions................xiv Safety Summary................. xvi Introduction ..................1 Model 05100PS-430-601 Integrated Power Supply System Features 1 1.1.1 Digitally-Controlled..............1 1.1.2 Superior Resolution and Stability ..........1 1.1.3 Intuitive Human-Interface Design...........

  • Page 4: Table Of Contents

    Table of Contents Special Configurations.................18 Superconducting Magnets with No Persistent Switch ......18 Short-Circuit or Resistive Load............19 Power-Up and Test Procedure ............20 Operation....................25 System Power On/Off Sequence ............25 3.1.1 Model 430 Programmer Power On/Off........25 3.1.2 Energizing Power Supply and Components ......26 Model 430 Programmer Default Display..........27 3.2.1 Field / Current Display ............27...
  • Page 5 Table of Contents Setup Menu ..................45 3.9.1 Entering / Exiting Setup Menu ..........46 3.9.2 Menu Navigation..............46 3.10 Setup Submenu Descriptions ............. 46 3.10.1 Supply Submenu ..............47 3.10.2 Load Submenu................. 52 3.10.3 Misc Submenu ................. 63 3.10.4 Net Settings Submenu ............72 3.10.5 Net Setup Submenu ..............
  • Page 6 Table of Contents Ethernet Configuration ..............110 4.4.1 Ethernet Connector..............111 4.4.2 Termination Characters ............111 Command Reference ................112 4.5.1 System-Related Commands...........112 4.5.2 Status System Commands.............113 4.5.3 SETUP Configuration Commands and Queries ....114 4.5.4 Protection Commands and Queries........119 4.5.5 Ramp Configuration Commands and Queries......124 4.5.6 Ramping State Commands and Queries.......128 4.5.7...
  • Page 7 Table of Contents Additional Technical Support............148 Return Authorization................ 149 Appendix..................151 A.1 Magnet Station Connectors ............151 A.2 LHe Level / Temp Connectors ............152 A.3 Current Transducer Signal Connector ........... 153 A.4 Current Transducer Power Connector ..........154 A.5 Program Out Connector ..............
  • Page 8 Table of Contents A.17 Model 430 Remote Control Application ..........194 A.18 Model 430IP Power Supply Programmer .........197 A.19 Persistent Switch Operation Flowchart ...........200 Index ....................203 viii Rev. 5...

  • Page 9: List Of Figures

    1 List of Figures List of Figures Figure 1-1 Typical Model 05100PS-430-601 System Rack Layout ......4 Figure 1-2 Model 08150PS Front Panel ..............7 Figure 1-3 Model 601 Front Panel Layout ............... 8 Figure 1-4 The Four Regions, or Quadrants, of System Operation...... 10 Figure 1-5 Dual-Quadrant System with Resistive Shunt........

  • Page 10: List Of Figures

    List of Figures Rev. 5...

  • Page 11: List Of Tables

    1 List of Tables List of Tables Table 1-1 Model 430 Front Panel Description ............5 Table 1-2 Model 430 Zero Flux Version Rear Panel Description......6 Table 1-3 Power Supply Front Panel Controls and Indicators ......7 Table 3-1 Description of Status Indicators ............
  • Page 12 List of Tables Rev.

  • Page 13: Foreword

    Foreword Purpose and Scope This manual contains the operation and maintenance instructions for the American Magnetics, Inc. Model 05100PS-430-601 High-Stability Power Supply System with zero flux current sensing system. The user is encouraged to contact an authorized AMI Technical Support Representative for information regarding specific configurations not explicitly covered in this manual.

  • Page 14: General Precautions

    Foreword General Precautions 3. Model 601 specifications 4. Establishing RS-232 or Ethernet communications with the Model 430. 5. Model 430 firmware upgrade. 6. Abbreviations and acronyms used in this manual. 7. Persistent switch operation (flow diagram). General Precautions Cryogen Safety The two most common cryogenic liquids used in superconducting magnet systems are nitrogen and helium.
  • Page 15 Foreword General Precautions In the event a person is burned by a cryogen or material cooled to cryogenic temperatures, the following first aid treatment should be given pending the arrival and treatment of a physician or other medical care worker: 1.

  • Page 16: Safety Summary

    Foreword Safety Summary ® is 18-8 stainless steel. Copper, Monel , brass and aluminum are also considered satisfactory materials for cryogenic service. Magnet Quenches When an energized superconducting magnet transitions from superconducting state to normal state, the magnet converts magnetic energy to thermal energy thereby rapidly converting the liquid helium to a vapor.
  • Page 17 Foreword Safety Summary Safety Legend Instruction manual symbol: the product is marked with this symbol when it is necessary for you to refer to the instruction manual in order to protect against damage to the product or personal injury. Hazardous voltage symbol. Alternating Current (Refer to IEC 417, No.
  • Page 18 Foreword Safety Summary xviii Rev.

  • Page 19: Introduction

    Model 430 Programmer with zero flux current sensing system, Model 601 Energy Absorber, and Model 08150PS Power Supply. The AMI Model 05100PS-430-601 Power Supply System provides for a degree of flexibility and accuracy previously unavailable in an economical commercial product.

  • Page 20: Flexibility

    1.1.4 Flexibility The Model 05100PS-430-601 system is configured as a two-quadrant high- stability power supply system which is able to both supply and remove electrical energy from the superconducting magnet system. The Power Supply System was engineered to be compatible with most magnet systems.

  • Page 21: Model 05100Ps-430-601 General Description

    Watt unipolar voltage and current stabilized DC Power Supply are configured with a Model 601 Energy Absorber to make up the +100 A, ±5 Vdc bipolar system designated as 05100PS-430-601. The power supply is remotely controlled by the Model 430 Power Supply Programmer.

  • Page 22: Power Supply System Rack Front Panel Layout

    Introduction System Rack 1.1.9 Power Supply System Rack Front Panel Layout Figure 1-1. Typical Model 05100PS-430-601 System Rack Layout Rev. 5...

  • Page 23: Model 430 Front Panel Layout

    Introduction Model 430 Front Panel 1.2 Model 430 Front Panel Layout Rev. 5...

  • Page 24: Model 430 Rear Panel Layout

    Introduction Model 430 Rear Panel Layout 1.3 Model 430 Rear Panel Layout Rev. 5...

  • Page 25: Power Supply Unit Front Panel Layout

    The power supply front panel contains the input ON/OFF circuit breaker and the OUTPUT indicators. The remaining front panel controls are not used in the Model 05100PS-430-601 configuration because the output is controlled by the Model 430 Programmer. Refer to Figure 1-2 and Table 1- 3.

  • Page 26: Model 601 Energy Absorber Front Panel Layout

    Introduction Model 601 Front Panel 1.5 Model 601 Energy Absorber Front Panel Layout Figure 1-3. Model 601 Front Panel Layout The Fault LED is the only device on the Model 601 front panel. If the Fault LED is not energized, the Model 601 is operating correctly. If the Fault LED is energized, then one or more of the internal energy absorbing elements has malfunctioned or power has been lost to the rear-panel power connector.

  • Page 27: System Specifications @ 25°C

    Introduction Model 601 Front Panel 1.6 System Specifications @ 25°C Magnet Current Control Range: 0 to +100 A Programming Accuracy: 5 mA Stability: 1 mA after 10 min. at desired current 100 μA/min Minimum Ramp Rate: Maximum Ramp Rate: 10 A/sec Output Voltage 0 to ±5 Vdc Range:...

  • Page 28: Operating Characteristics

    Quadrants, of System Operation. 1.7.1 Dual-Quadrant Operation In the Model 05100PS-430-601 dual-quadrant Power Supply system, an energy absorber is added in series with the unipolar supply; this allows stored magnetic energy to be converted to thermal energy, thereby allowing much faster magnetic field reduction. This corresponds to operation in quadrants 1 and 4 of Figure 1-4.

  • Page 29: Figure 1-6 Dual-Quadrant System With Precision Current Transducer Option

    Introduction Operating Characteristics and accuracy (over that of the resistive shunt version) by an order of magnitude. Misc. Line Losses Current Persistent Magnet Switch Coil(s) Unipolar (optional) Power Supply Current Transducer To Model 430 Energy CURRENT TRANSDUCER Absorber SIGNAL Connector Figure 1-6.
  • Page 30 Introduction Operating Characteristics Rev. 5...

  • Page 31: Installation

    2 Installation Warning Before energizing the equipment, the earth ground of the power receptacle must be verified to be at earth potential and able to carry the rated current of the power circuit. Using extension cords should be avoided; however, if one must be used, ensure the ground conductor is intact and capable of carrying the rated current.

  • Page 32: Power Requirements

    Installation Power Requirements 2.3 Power Requirements Warning The system operates on 50/60 Hz power and may be configured for 100-115 VAC or 200-230 VAC. The power requirement for each system component is marked on the rear panel of the unit adjacent to the power entry connector.

  • Page 33: System Interconnects

    Installation Bipolar High-Stability Supply retain the data even after power is removed from the instrument. An example of the data to be entered and how it is entered is described in section 3.11 on page 76. If the Model 430 Programmer was purchased as part of a magnet system, essential data will have already been entered at the AMI factory and a configuration sheet will have been provided detailing the settings.
  • Page 34 Installation Bipolar High-Stability Supply Rev.
  • Page 35 Installation Bipolar High-Stability Supply Refer to Figure 2-1 on page 16. Ensure the cabling is connected in the following manner: Note The use of locking hardware is recommended for all high-current connections. Caution Do not overtighten the hardware on the interconnection terminals (refer to specifications table on page 9 for torque limits).

  • Page 36: Special Configurations

    Installation Magnets w/o Persistent Switch h. Connect the DB15 analog I/O cable from the PROGRAM OUT connector (14) on the back of the Model 430 Programmer to the DB15 ANALOG I/O connector on the rear of the (20) power supply unit.

  • Page 37: Short-Circuit Or Resistive Load

    Installation Operation on a Short-Circuit For magnet inductance <= 100 Henries (H): Stability Setting = (100 - H) For magnet inductance > 100 Henries: Stability Setting = 0 2.8 Short-Circuit or Resistive Load If operating with a short-circuit as a load without the presence of a superconducting magnet, the Model 430 Programmer must be manually configured for stability.

  • Page 38: Power-Up And Test Procedure

    Installation Power-Up Procedure overcome the 5 Vdc bias. Once the bias is achieved, the series resistance is minimal and the Model 601 appears as a short-circuit. It is not possible to decrease the stability setting to remove the integration time, since once the 5 Vdc bias is achieved, the load is a short-circuit and the system will become unstable.
  • Page 39 Installation Power-Up Procedure 4. When prompted by the Model 430 Programmer, energize the power supply and press ENTER on the Model 430 Programmer. Note Remember to adjust the programmer voltage limit settings as necessary to account for the additional voltage (5 V) required to operate the system with a Model 601 installed.
  • Page 40 Installation Power-Up Procedure 12. The system should ramp to 10 A in approximately 10 seconds. Verify this is the case (if a PSwitch is installed and in the cooled state, ramp time to 10 A should be slightly less than 2 seconds). Note With an energy absorber unit is connected, the Model 430 Programmer may take significantly longer to ramp the current to 10...
  • Page 41 Installation Power-Up Procedure 20. Reset the stability setting and ramp rate of the Model 430 Programmer to an appropriate value for the magnet to be operated. Then turn off the Model 430. 21. Remove the short from the power supply leads and connect the leads to the magnet current leads of the magnet.
  • Page 42 Installation Power-Up Procedure Rev.

  • Page 43: Operation

    Where used to describe voltages, currents, and fields as relate to the Model 05100PS-430-601 Power Supply, the ± should be ignored (considered illustrative only) since the power supply provides only positive (unipolar) current.

  • Page 44: Energizing Power Supply And Components

    Operation Energizing Power Supply System Components Note If turned off, the Model 430 Programmer must remain unpowered for at least 5 seconds before it is powered back on. If not, there may be an initialization error, in which case the following screen will be displayed.

  • Page 45: Model 430 Programmer Default Display

    Operation Default Display connected to the Model 430 rear panel POWER connector. The current transducer receives this power indirectly via the SIGNAL connection to the rear panel of the Model 430 Programmer. 3.1.2.3 Energy Absorber The Model 601 Energy Absorbers is operational immediately upon connection to a power receptacle.

  • Page 46: Voltage Display

    Operation Default Display : Voltage Programmer display. The parameter displayed (field or current) is toggled by pressing SHIFT followed by FIELD <> CURRENT . Thus, if field strength is being displayed, pressing SHIFT followed by FIELD <> CURRENT will cause the current to be displayed; conversely, if current is being displayed, pressing SHIFT followed by...

  • Page 47: Status Indicator

    Operation Default Display : Status Indicator 3.2.3 Status Indicator The status indicator indicates the Model 430 Programmer operating Table 3-1. Description of status. It is always visible (except Status Indicators during a quench condition) and is displayed just to the right of the Paused field / current display (see Figure Ramping Up...

  • Page 48: Figure 3-2 Numeric Keypad And Associated Keys

    Operation Entering Values Figure 3-2. Numeric Keypad and Associated Keys a prompt for the next digit or decimal entry, and the display will show an asterisk (*) indicating that numeric entry is active. An example of a numeric entry in progress (numeric entry active) is illustrated below: +50.00 A Target Current (A)* +0.50 Vs...

  • Page 49: Using Fine Adjust Knob To Adjust Numeric Values

    Operation Fine Adjust Knob Operation Using Fine Adjust Knob to Adjust Numeric Values For menu items requiring entry of a numeric value, the value may alternatively be adjusted with the front panel fine adjust knob. These menu items include: • Target Field Setpoint (in holding mode or while ramping) •...

  • Page 50: Entering Picklist Values

    Operation Entering Picklist Values Note The fine adjust knob is velocity-sensitive, meaning that the faster the knob is turned, the more coarse the adjustment. Slow manipulation of the knob will yield very fine resolution even beyond that displayed by the Model 430 Programmer. When the desired numeric value has been set using the fine adjust knob, ENTER key is pressed to store the value.

  • Page 51: Single-Key Commands / Menu

    Operation Single-key Commands selector will move to the last picklist value. An example of a picklist entry in progress (picklist entry active) is illustrated below: +50.00 A Field Units* +0.50 Vs Kilogauss Tesla When the item selector is pointing at the desired picklist value, press the ENTER key to accept the picklist value.
  • Page 52 Operation Single-key Commands : Persistent Switch Control switch was cooled at the rate set by the PSw P/S Ramp Rate variable and then the persistent switch heater is energized. Pressing SHIFT followed by the PERSIST. SWITCH CONTROL key toggles the Model 430 Programmer persistent switch heater between energized (turned on) and de-energized (turned off).

  • Page 53: Target Field Setpoint Key

    Operation Single-key Commands : Target Field Setpoint seconds within the Load submenu . The default cooling period of 20 seconds is adequate for the majority of wet persistent switches. Conduction cooled switches typically require longer time to transition from resistive to superconducting. The default cooling gain of 0.0% may be adequate for the majority of wet persistent switches.

  • Page 54: Ramp / Pause Key

    Operation Single-key Commands : Ramp / Pause three seconds before reverting to the default display. The value displayed is as follows: •When in driven mode, the present current/field will be displayed. •When in persistent mode, the current/field will be displayed that was flowing in the magnet at the time persistent switch was cooled.

  • Page 55: Shift-Key Commands / Menus

    Operation Shift Key Commands SHIFT-key Commands / Menus Figure 3-5. SHIFT-Key Functions The most commonly used commands and menus (other than ramping controls) are accessed using the SHIFT key followed by a numeric keypad key. Use of the specific SHIFT-key commands and menus is described in sections specific to the functionality of that specific SHIFT-key.
  • Page 56 Operation Shift Key Commands : Ramp Rate ramp rate in terms of current as specified in the table on page 9. If the Ramp Segments value 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.
  • Page 57 Operation Shift Key Commands : Ramp Rate The right arrow key is pressed once to access the segment 1 range display. The numeric and ENTER keys (or fine adjust knob) are used to set the segment 1 current range upper bound to a value of +50.00 A Seg.1 Range (A) +0.50 Vs...
  • Page 58 Operation Shift Key Commands : Ramp Rate Current Limit if set lower than the Magnet Current Rating); it will be displayed as “±Limit” and cannot be edited. +50.00 A Seg.3 Range (A) +0.50 Vs ±58.0 to ±Limit Now, when current is in the range of 0 to ±55 A, ramping will be controlled at ±0.2 A/s.

  • Page 59: Voltage Limit Shift-Key

    Operation Shift Key Commands : Voltage Limit If the Current Limit is raised above the Magnet Current Rating, it will be ignored and the actual Magnet Current Rating will govern. 3.7.2 Voltage Limit SHIFT-key +50.00 A Voltage Limit (V) +0.50 Vs ±2.000 Use of the VOLTAGE LIMIT...

  • Page 60: Increment Field Shift-Key

    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 90.

  • Page 61: Field Units Shift-Key

    Operation Shift Key Commands : Field Units 3.7.7 Field Units SHIFT-key +50.00 A Field Units +0.50 Vs Kilogauss Tesla FIELD UNITS Use of the SHIFT-key provides a shortcut to the picklist menu for defining whether the field is specified and displayed in units of kilogauss (kG) or tesla (T).

  • Page 62: Fine Adjust Shift-Key

    Operation Shift Key Commands : Fine Adjust 3.7.12 Fine Adjust SHIFT-key FINE ADJUST SHIFT-key is used to enable the use of the front panel fine adjust knob to adjust numeric values. See section 3.4 on page 31 for details. 3.7.13 Persist. Switch Control SHIFT-key Refer to section 3.6.1 on page 33.

  • Page 63: Shift Indicator

    Operation LED Indicators : Current Leads Energized a record of that event. Therefore the MAGNET IN PERSISTENT MODE LED state will be incorrect (remain ) when the Model 430 Programmer power is restored. Caution If the Model 430 Programmer power supply system is powered off MAGNET IN and moved from one magnet system to another, the PERSISTENT MODE...

  • Page 64: Entering / Exiting Setup Menu

    Operation Setup Menu : Entering / Exiting 3.9.1 Entering / Exiting Setup Menu To enter the setup menu, simply press the MENU key. When in any of the setup menus, pressing the MENU key will exit the setup menu. The MENU key toggles the Model 430 Programmer in and out of setup mode.

  • Page 65: Supply Submenu

    Operation Setup Submenu : Supply user will be able to edit parameters under that submenu. See setup menu structure in Figure 3-7 below. SETUP MENU SUPPLY SUPPLY LOAD LOAD LOAD MISC MISC MISC MISC NET SETTINGS NET SETTINGS NET SETTINGS NET SETTINGS NET SETTINGS NET SETUP...
  • Page 66 Operation Setup Menu : Supply If using a standard power supply supported by AMI, selecting a power supply within the Select Supply picklist sets all the remaining parameters in the supply submenu per Table 3-2 on page 49. Note The Supply submenu is unique in that it has only the Select Supply picklist as a sublevel (unless Custom is chosen from the picklist of Select Supply options).
  • Page 67 Operation Setup Menu : Supply Table 3-2. Select Supply picklist values and associated parameters. Min Output Max Output Min Output Max Output V-V Mode Input Power Supply Voltage (V) Voltage (V) Current (A) Current (A) Range (V) AMI 08150PS +8.000 +0.0000 +150.000 +0.000 to +10.000...

  • Page 68: Figure 3-8 Example Power Supply Outputs

    Operation Setup Menu : Supply the keypress. Power supply selection should also preferably be performed with the power supply off for maximum safety. The power supply settings define the output voltage and current ranges for a specific power supply. For example, V-I diagrams are presented in Figure 3-8 for the AMI 12100PS and AMI 4Q06125PS selections.
  • Page 69 Operation Setup Menu : Supply 3.10.1.1.1.1 Min Output Voltage +0.00 A — Min Output Voltage (V) +0.00 Vs -6.000 The minimum output voltage is specified in volts (V) and reflects the minimum output voltage compliance of a connected power supply. The valid range is 0.000 to -20.000 V, and can be set by using either the numeric keypad per section 3.3 on page 29 or the fine adjust knob (section 3.4 on page 31).

  • Page 70: Load Submenu

    Operation Setup Submenu : Load 3.10.1.1.1.4 Max Output Current +0.00 A — Max Output Current (A) +0.00 Vs +100.000 The maximum output current is specified in amperes (A) and reflects the maximum output current capacity of a connected power supply. The valid range is 0.001 to +2000.000 A , and can be set by using either the numeric keypad per section 3.3 on page 29 or the fine adjust knob (section 3.4 on page 31).

  • Page 71: Figure 3-9 Stability Setting Vs. Magnet (With Pswitch) Inductance

    Operation Setup Menu : Load by using either the numeric keypad per section 3.3 on page 29 or the fine adjust knob (section 3.4 on page 31). The valid range is from 0.0 to 100.0%. The default value is 0.0% unless preset by AMI to match a specific superconducting magnet.
  • Page 72 Operation Setup Menu : Load reason, small changes in Stability Setting have a large effect on stability as the Stability Setting value approaches 100%. Changing the Stability Setting from 99.9% to 99.8% changes the gain multiplier from 0.1% to 0.2% (changing the gain multiplier by a factor of 2, a 100% increase in the gain multiplier).

  • Page 73: Figure 3-10 Typical Power Supply Self-Limits

    Operation Setup Menu : Load performed — all operations will be performed and displayed in terms of amperes. Values from 0.001 to 999.99999 are acceptable for coil constant. The default value is 1.00000 kG/A (or 0.10000 T/A) unless preset by AMI to match a specific superconducting magnet. If the coil constant is not explicitly stated within a superconducting magnet’s specifications, the value can be obtained by dividing the rated field by the rated current.

  • Page 74: Figure 3-11 Magnet Current Rating Set Within Supply Range

    Operation Setup Menu : Load magnet, and specific magnet data has not been provided by the customer, the Model 430 will ship with Magnet Current Rating set at the default value of 80 A. Figure 3-11 shows the default Magnet Current Rating as set within the 4Q06125PS power supply limits.

  • Page 75: Figure 3-12 Example Current Limit Setup

    Operation Setup Menu : Load The Current Limit setting can be used to limit the magnet current to values lower than the Magnet Current Rating for testing or other purposes (refer to Figure 3-12). Figure 3-12. Example Current Limit Setup The value can be set by using either the numeric keypad per section 3.3 on page 29 or the fine adjust knob (section 3.4 on page 31).
  • Page 76 Operation Setup Menu : Load then makes the voltage and current measurements, calculates the inductance and then displays the result. +46.19 A Magnet Inductance (H) +0.50 Vs 32.13 3.10.2.6 PSwitch Installed +50.00 A — PSwitch Installed? +0.50 Vs This picklist value indicates whether or not a persistent switch is installed.
  • Page 77 Operation Setup Menu : Load heater; the magnet current is changed back to zero during this process. P PSwitch Current Detect(mA) +2.00 A +0.50 Vs Detecting...(20.7mA) 4. 5 mA is added to the current that was present during the superconducting to resistive transition and that value of current is displayed.
  • Page 78 Operation Setup Menu : Load 120 seconds . The value can be set by using either the numeric keypad per section 3.3 on page 29 or the fine adjust knob (section 3.4 on page 31). The default is 20 seconds unless preset by AMI to match a specific superconducting magnet.
  • Page 79 Operation Setup Menu : Load may be set to any value between 0.1 and 10 A/sec. The value can be set by using either the numeric keypad per section 3.3 on page 29 or the fine adjust knob (section 3.4 on page 31). The default is 10 A/ sec unless preset by AMI to match a specific superconducting magnet system.
  • Page 80 Operation Setup Menu : Load 3.10.2.14 Energy Absorber Present +50.00 A — Energy Absorber Present? +0.50 Vs This picklist value indicates whether an energy absorber, such as the AMI Model 601, is connected to the power supply system. The default setting is NO. It is important for this setting to be correct since the internal gain tables of the Model 430 Programmer compensate for the additional load of the energy absorber if present.

  • Page 81: Misc Submenu

    Operation Setup Submenu : Misc 3.10.3 Misc Submenu When the Misc submenu is selected, several miscellaneous parameters may be viewed and/or changed. 3.10.3.1 Display Brightness +50.00 A — Display Brightness (%) +0.50 Vs This picklist value controls display brightness. As shown above, there are four brightness settings from which to choose (25%, 50%, 75% and 100%).
  • Page 82 Operation Setup Menu : Misc 3.10.3.4 Field Units +50.00 A — Field Units +0.50 Vs Kilogauss Tesla This picklist value specifies whether the field is specified and displayed in units of kilogauss (kG) or tesla (T). The units selected also applies to remote interface commands. The default setting is kilogauss.
  • Page 83 Operation Setup Menu : Misc the general user cannot execute those commands and/or modify those settings. The implementation of settings protection in the Model 430 Programmer is very flexible; it allows as many or as few commands and/or settings to be locked as the magnet system administrator desires.
  • Page 84 Operation Setup Menu : Misc 3.10.3.6.1 PSwitch Control Lock +50.00 A — PSwitch Control Lock +0.50 Vs Locked Unlocked This picklist value specifies whether use of the PERSIST. SWITCH CONTROL key is locked or unlocked. The default value is Unlocked. 3.10.3.6.2 Target Field Setpt Lock +50.00 A —...
  • Page 85 Operation Setup Menu : Misc value (under the Misc submenu) and editing of the Ramp Time Units value (under the Misc submenu). The default value is Unlocked. 3.10.3.6.6 Power Supply Lock +50.00 A — Power Supply Lock +0.50 Vs Locked Unlocked This picklist value specifies whether the Select Supply picklist value is locked or unlocked.
  • Page 86 Operation Setup Menu : Misc 3.10.3.6.10 Field <> Current Lock +50.00 A — Field <> Current Lock +0.50 Vs Locked Unlocked This picklist value specifies whether use of the FIELD <> CURRENT SHIFT-key command is locked or unlocked. The default value is Unlocked.
  • Page 87 Operation Setup Menu : Misc 3.10.3.6.14 Volt Meter Lock +50.00 A — Volt Meter Lock +0.50 Vs Locked Unlocked This picklist value specifies whether use of the VOLT METER SHIFT-key command is locked or unlocked. The default value is Unlocked. 3.10.3.6.15 Fine Adjust Lock +50.00 A —...
  • Page 88 Operation Setup Menu : Misc 3.10.3.6.18 Mag Current Rating Lock +0.00 A — Mag Current Rating Lock +0.50 Vs Locked Unlocked This picklist value specifies whether the Magnet Current Rating value (under the Load submenu) is locked or unlocked. The default value is Unlocked.
  • Page 89 Operation Setup Menu : Misc 3.10.3.6.22 Absorber Present Lock +50.00 A — Absorber Present Lock +0.50 Vs Locked Unlocked This picklist value specifies whether the Energy Absorber Present picklist value (under the Load submenu) is locked or unlocked. The default value is Unlocked. 3.10.3.6.23 External Rampdown Lock +0.00 A —...

  • Page 90: Net Settings Submenu

    Operation Setup Submenu : Net Settings When ENTER is pressed to change the settings protection password, the current password must be correctly entered before a new password can be entered. +50.00 A — Enter Current Password* +0.50 Vs Using the keypad, type the current 4-digit (maximum) numeric password and press ENTER .
  • Page 91 Operation Setup Submenu : Net Settings 3.10.4.1 Addr Assignment (Present) +50.00 A — Addr Assignment (Present) +0.50 Vs DHCP This submenu item displays the currently selected method of IP address assignment. The value will either be DHCP or Static. The default value is DHCP, which means that the system IP address, the subnet mask and the gateway IP address are dynamically determined by the network DHCP server.

  • Page 92: Net Setup Submenu

    Operation Setup Submenu : Net Setup DHCP indicates that the value is dynamically assigned by a DHCP server; Static indicates that the value is static, assigned by the Model 430 user. The default value is 0.0.0.0. However, since the default method of subnet mask assignment is by DHCP server, this value is typically set by the network DHCP server.
  • Page 93 Operation Setup Submenu : Net Setup Note If the IP Address Assignment value is changed, the Model 430 Programmer power must be cycled off for at least 15 seconds and then back on to complete the change. The previous value will continue to be used until the Model 430 is restarted.

  • Page 94: Example Setup

    Operation Example Setup Note This item is only available in the Net Setup submenu if IP Address Assignment is Static. If IP Address Assignment is DHCP, the gateway IP address is assigned by the network DHCP server and cannot be assigned by the user. 3.11 Example Setup As a precursor to operating a superconducting magnet with the Model 430 Programmer and power supply, all of the setup items should be reviewed...

  • Page 95: Figure 3-13 Example Magnet Specification Sheet

    Operation Example Setup American Magnetics, Inc. P.O. Box 2509, 112 Flint Road, Oak Ridge, TN 37831-2509 Phone: (865) 482-1056 Fax: (865) 482-5472 Internet: http://www.americanmagnetics.com E-mail: sales@americanmagnetics.com AMI JOB # MAGNET # TYPE: MODEL: FOR: DATE: Rated Central Field @ 4.2K...
  • Page 96 Operation Example Setup 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.

  • Page 97: Ramping Functions

    Operation Ramping Functions 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 to be defined and executed (up to 10 segments, each with a unique ramp rate).

  • Page 98: Manual Ramping

    Operation Ramping Functions : Manual Ramping Table 3-6. Ramp modes and descriptions. Mode Description Ramping Automatic ramping to the target field/current is in progress. The target field/current has been achieved and is being Holding maintained. Ramping is suspended at the field/current achieved at the time Paused the PAUSED mode was entered.

  • Page 99: Ramping To Zero

    Operation Ramping Functions : Ramping to Zero will begin when the RAMP / PAUSE key is pressed to take the Model 430 Programmer out of PAUSED mode. The ramp rate will be controlled by the preset ramp rate variables as described in section 3.7.1 on page 37. 3.12.4 Ramping to Zero RAMP TO ZERO Pressing the...

  • Page 100: Procedure For Initial Heating Of The Switch

    Operation Persistent Switch Control : Initial Heating of the Switch See section 3.6.1 on page 33 for details of the use of the PERSIST. SWITCH CONTROL key. 3.13.1 Procedure for Initial Heating of the Switch The Model 430 Programmer remembers the state of the persistent switch during the time that the Programmer is de-energized.
  • Page 101 Operation Persistent Switch Control : Entering Persistent Mode 2. The Model 430 Programmer must be in either the HOLDING or PAUSED mode at the target field or current. 3. The Model 430 Programmer must be at the default field/current display. 4.
  • Page 102 Operation Persistent Switch Control : Entering Persistent Mode Note The magnet voltage (Vm) is monitored during the power supply ramp to zero. If the magnet voltage exceeds 0.5 V during this ramp, the ramp is paused and the Model 430 Programmer beeps to indicate the persistent switch did not transition to the superconducting state properly.

  • Page 103: Procedure For Exiting Persistent Mode

    Operation Persistent Switch Control : Exiting Persistent Mode Note If desired, press the key return the Model 430 Programmer to the default display. +0.00 A Mode: Zero Current +0.00 Vm PSwitch Heater: OFF Note Refer to section 3.6.2 on page 35 for the procedure to display the magnet current that was established when the persistent switch was cooled.
  • Page 104 Operation Persistent Switch Control : Exiting Persistent Mode b. When ENTER is pressed, the display will indicate that the magnet was in persistent mode when the Model 430 Programmer was turned off (and display the magnet current that was established when the persistent switch was cooled). Magnet in Persistent Mode (13.5A).
  • Page 105 Operation Persistent Switch Control : Exiting Persistent Mode 5. The persistent switch heater is heated for the preset heating time as set by the PSwitch Heated Time variable +50.00 A Mode: Heating Switch (4) +3.50 Vs PSwitch Heater: ON Note The magnet voltage (Vm) is monitored during switch heating.

  • Page 106: Toggling The State Of The Persistent Switch Heater

    Operation Persistent Switch Control : Exiting Persistent Mode 7. After ENTER is pressed, the default field/current status screen is displayed with the power supply in the pause mode: +50.00 A Mode: Paused +3.50 Vs PSwitch Heater: ON 3.13.4 Toggling the State of the Persistent Switch Heater The state of the persistent switch can be toggled by pressing SHIFT then the...

  • Page 107: Ramping Functions Example

    Operation Ramping Functions Example 2. Press the SHIFT and then the PERSIST. SWITCH CONTROL key to turn on the persistent switch heater current. Note that the Model 430 Programmer will enter the HEATING SWITCH mode and disallow any ramping during the switch heating period.

  • Page 108: Quench Detection

    Operation Quench Detection Point 4. The user presses the RAMP / PAUSE key at a current of 25.15 A and the PAUSED mode is activated. The Model 430 Programmer maintains the current in the PAUSED mode. Point 5. The user presses the RAMP / PAUSE key once again to resume ramping.

  • Page 109: External Quench Detection

    Operation Quench Detection : External Detection If the RESET QUENCH key has been locked , the user will be asked to enter the password to clear the quench. The entry of this password will not unlock this reset quench feature, but will only reset the current quench event so operation may resume.

  • Page 110: External Rampdown

    Operation External Rampdown : External Rampdown while in Persistent Mode magnet. If an actual quench condition occurs, the Model 430 will follow the magnet current to zero unless the user intervenes. If the rear panel Quench I/O connector is asserted, the Model 430 will force the power supply output to zero volts regardless of whether the internal quench detection is enabled or disabled.
  • Page 111 Operation External Rampdown : External Rampdown while in Persistent Mode 1. The Model 430 Programmer first ramps the power supply to the magnet current.  +3.92 A Mode: Ramping +0.17 Vs PSwitch Heater: OFF 2. Once the power supply is at the magnet current, the FIELD AT TARGET LED will light and the unit will momentarily “hold”:...

  • Page 112: External Rampdown While Not In Persistent Mode

    Operation External Rampdown : External Rampdown while not in Persistent Mode manual operation of the system. The following will be displayed after pressing ENTER +0.00 A Mode: Zero Current +0.00 Vs PSwitch Heater: ON 3.16.2 External Rampdown while not in Persistent Mode When external rampdown is initiated with the magnet not in PERSISTENT mode, the persistent switch is either off or not installed so there is no need for persistent switch heating.
  • Page 113 Operation Summary of Operational Limits Table 3-7. Summary of Model 430 Programmer Limits and Defaults Model 430 Setting (Units) Absolute Limits Default Setting Min Output Voltage (V) -6.000 0.000 to 20.000 Max Output Voltage (V) 0.001 to +20.000 6.000 Min Output Current (A) page 9 -125.000 see table on...
  • Page 114 Operation Summary of Operational Limits Rev. 5...

  • Page 115: Remote Interface Reference

    4 Remote Interface Reference The Model 430 Programmer provides both RS-232 and Ethernet interfaces as standard features. The serial and Ethernet interfaces may operated simultaneously. Separate output buffers are also provided for the serial and Ethernet return data. However, for optimal performance and simplicity of programming, AMI normally recommends limiting operation to one interface.
  • Page 116 Remote Interface Reference SCPI Command Summary Status System Commands (see page 113 for more information) *STB? *SRE <enable_value> *SRE? *CLS *ESR? *ESE <enable_value> *ESE? *PSC {0|1} *PSC? *OPC *OPC? SETUP Configuration Commands (see page 114 for more information) CONFigure:STABility <percent> CONFigure:COILconst <value (kG/A, T/A)>...
  • Page 117 Remote Interface Reference SCPI Command Summary SETUP Configuration Queries (see page 114 for more information) SUPPly:VOLTage:MINimum? SUPPly:VOLTage:MAXimum? SUPPly:CURRent:MINimum? SUPPly:CURRent:MAXimum? SUPPly:TYPE? SUPPly:MODE? STABility? COILconst? CURRent:LIMit? CURRent:RATING? PSwitch:CURRent? PSwitch:HeatTIME? PSwitch:CoolTIME? PSwitch:PowerSupplyRampRate? PSwitch:AUTODetect? PSwitch:CoolingGAIN? PSwitch:INSTalled? QUench:DETect? QUench:RATE? ABsorber? RAMP:RATE:UNITS? FIELD:UNITS? IPNAME? Protection Configuration Commands (see page 119 for more information) CONFigure:LOCK:PSwitch:CONTRol {0|1} CONFigure:LOCK:TARGet {0|1}...
  • Page 118 Remote Interface Reference SCPI Command Summary CONFigure:LOCK:RAMPDown {0|1} CONFigure:LOCK:SUPPly {0|1} CONFigure:LOCK:VOLTage:LIMit {0|1} CONFigure:LOCK:QUench:RESet {0|1} CONFigure:LOCK:INCR-DECR {0|1} CONFigure:LOCK:FIELD-CURRent {0|1} CONFigure:LOCK:FIELD:UNITS {0|1} CONFigure:LOCK:STABility {0|1} CONFigure:LOCK:VOLTage:VS-VM {0|1} CONFigure:LOCK:VOLTMeter {0|1} CONFigure:LOCK:FINEadjust {0|1} CONFigure:LOCK:COILconst {0|1} CONFigure:LOCK:CURRent:LIMit {0|1} CONFigure:LOCK:CURRent:RATING {0:1} CONFigure:LOCK:PSwitch:SETtings {0|1} CONFigure:LOCK:QUench:DETect {0|1} CONFigure:LOCK:QUench:RATE {0|1} CONFigure:LOCK:ABsorber {0|1} CONFigure:LOCK:BRIGHTness {0|1} CONFigure:LOCK:NETsetup {0|1}...
  • Page 119 Remote Interface Reference SCPI Command Summary LOCK:ABsorber? LOCK:BRIGHTness? LOCK:NETsetup? Rev. 5...
  • Page 120 Remote Interface Reference SCPI Command Summary Ramp Configuration Commands and Queries (see page page 124 for more information) CONFigure:VOLTage:LIMit <voltage (V)> CONFigure:CURRent:TARGet <current (A)> CONFigure:FIELD:TARGet <field (kG, T)> CONFigure:RAMP:RATE:CURRent <segment>,<rate (A/s, A/min)>, <upper bound (A)> CONFigure:RAMP:RATE:FIELD <segment>,<rate (kG/s, kG/min, T/s, T/min)>,<upper bound (kG, T)>...
  • Page 121 Remote Interface Reference SCPI Command Summary Ramping State Commands and Queries (see page 128 for more information) RAMP PAUSE INCR DECR ZERO STATE? Switch Heater Commands and Queries (see page 129 for more information) PSwitch {0|1} PSwitch? PERSistent? Quench State Control and Queries (see page 130 for more information) QUench {0|1} QUench?

  • Page 122: Programming Overview

    Remote Interface Reference SCPI Introduction *ETE <enable_value> *ETE? *TRG 4.2 Programming Overview The Model 430 Programmer conforms to the SCPI (Standard Commands for Programmable Instruments) IEEE standard. The SCPI standard is an ASCII-based specification designed to provide a consistent command structure for instruments from various manufacturers.

  • Page 123: Figure 4-1 The Model 430 Programmer Status System

    Remote Interface Reference SCPI Status System Serial Output Buffer Status Byte Register <1> <2> Quench Condition <4> "OR" <8> <16> <32> <128> Standard Event Register Serial Poll *SRE <value> *STB? *SRE? Operation Complete <1> Summary Bit <2> Query Error <4> "OR"...
  • Page 124 Remote Interface Reference SCPI Status System messages in the output buffers will clear the appropriate “Message Available” bit. The bit definitions for the Status Byte register are defined in Table 4-1. Table 4-1. Bit Definitions for the Status Byte Register Decimal Bit Number Value...

  • Page 125: Standard Event Register

    Remote Interface Reference SCPI Status System 4.2.2.2 Reading the Status Byte using *STB? The *STB? returns the contents of the Status Byte register, but it is processed in the command queue like any other command. The *STB? command does not clear bit 6 of the Status Byte register. 4.2.2.3 Using the Message Available Bit(s) The “Message Available”...

  • Page 126: Command Handshaking

    Remote Interface Reference Command Handshaking enable register setting is persistent if the Model 430 Programmer is configured for *PSC 0 (no status clear on power-on). Table 4-2. Bit Definitions for the Standard Event Register Decimal Bit Number Value Definition 0 Operation Complete All commands prior to and including have been executed.
  • Page 127 Remote Interface Reference Command Handshaking should many commands be sent to the Model 430 Programmer in rapid succession. An example of a sequence of commands using the *OPC command to handshake is the following: CONF:CURR:TARG 50.0; CONF:RAMP:RATE:CURR 1, 0.1, 80.0; CONF:VOLT:LIM 5.0;...

  • Page 128: Configuration

    Remote Interface Reference RS-232 Configuration 4.3 RS-232 Configuration The Model 430 Programmer uses the following parameters related to the RS-232 interface: • Baud Rate: 115200 • Parity: No Parity • Data Bits: 8 Data Bits • Number of Start Bits: 1 bit •...

  • Page 129: Ethernet Connector

    Remote Interface Reference IEEE-488 Configuration the parameters under the Net Setup submenu (see sections 3.10.5.2, 3.10.5.3 and 3.10.5.4). To make the values dynamically assigned by a network DHCP server, set IP Address Assignment to DHCP (see section 3.10.5.1). The system name (also known as host name or computer name), can be set using remote communications (either Ethernet or RS-232);...

  • Page 130: Command Reference

    Remote Interface Reference System-Related Commands 4.5 Command Reference The following paragraphs present all Model 430 Programmer commands and queries in related groups and a detailed description of the function of each command or query is provided. Examples are also provided where appropriate.

  • Page 131: Status System Commands

    Remote Interface Reference Status System Commands +50.00 kG ¡ Status: Ramping +1.50 Vs * PSwitch Heater: ON Figure 4-2. Asterisk Indicating Model 430 in Remote Mode • SYSTem:TIME? Returns the date and time of the Model 430 Programmer in the format mm/dd/yyyy hh:mm:ss.

  • Page 132: Setup Configuration Commands And Queries

    Remote Interface Reference SETUP Configuration Commands and Queries • *CLS Clears the Standard Event register and the error buffer. • *ESR? Returns a decimal sum which corresponds to the binary-weighted sum of the contents of the Standard Event register. • *ESE <enable_value>...
  • Page 133 AMI 10100PS AMI 10200PS HP 6260B Kepco BOP 20-5M Kepco BOP 20-10M Xantrex XFR 7.5-140 Custom AMI Model 05100PS-430-601 AMI Model 05200PS-430-601 AMI Model 05300PS-430-601 AMI Model 05400PS-430-601 AMI Model 05500PS-430-601 • SUPPly:VOLTage:MINimum? Returns the minimum power supply compliance setting in volts. This value can be configured only via front panel operation using the Supply submenu and is set automatically when a preset supply type is selected.
  • Page 134 Remote Interface Reference SETUP Configuration Commands and Queries • SUPPly:CURRent:MINimum? Returns the minimum output current capacity of the power supply in amperes. This value can be configured only via front panel operation using the Supply submenu and is set automatically when a preset supply type is selected.
  • Page 135 Remote Interface Reference SETUP Configuration Commands and Queries • COILconst? Returns the coil constant setting in kG/A or T/A per the selected field units. • CONFigure:CURRent:LIMit <current (A)> Sets the Current Limit in amperes. The Current Limit is the largest magnitude operating current allowed during any ramping mode.
  • Page 136 Remote Interface Reference SETUP Configuration Commands and Queries • CONFigure:PSwitch:CoolTIME <time (seconds)> Sets the time required in seconds for the persistent switch to become superconducting after the persistent switch heater has been deactivated. • CONFigure:PSwitch:PowerSupplyRampRate <rate (A/s)> Sets the ramp rate that will be used by the power supply to ramp the PERSIST.

  • Page 137: Protection Commands And Queries

    Remote Interface Reference SETUP Configuration Commands and Queries • ABsorber? Returns “0” indicating that an energy absorber is not present in the system, or “1” indicating that an energy absorber is present. • CONFigure:RAMP:RATE:UNITS {0|1} Sets the preferred ramp rate time units. Sending “0” selects seconds. A “1” selects minutes.
  • Page 138 Remote Interface Reference SETUP Configuration Commands and Queries • CONFigure:LOCK:PSwitch:CONTRol {0|1} Specifies whether use of the PERSIST. SWITCH CONTROL key is locked or unlocked. Sending “0” unlocks. A “1” locks. “0” is the default value. • LOCK:PSwitch:CONTRol? PERSIST. SWITCH CONTROL Returns “0”...
  • Page 139 Remote Interface Reference SETUP Configuration Commands and Queries and V-V Mode Input Range) from being edited. Sending “0” unlocks. A “1” locks. “0” is the default value. • LOCK:SUPPly? Returns “0” for Select Supply picklist value unlocked, or “1” for locked. •...
  • Page 140 Remote Interface Reference SETUP Configuration Commands and Queries • LOCK:FIELD-CURRent? Returns “0” for use of the FIELD <> CURRENT SHIFT-key command unlocked, or “1” for locked. • CONFigure:LOCK:FIELD:UNITS {0|1} Specifies whether the Field Units value is locked or unlocked (whether FIELD UNITS accessed through the SHIFT-key menu or under the Misc...
  • Page 141 Remote Interface Reference SETUP Configuration Commands and Queries • CONFigure:LOCK:COILconst {0|1} Specifies whether the Coil Constant value (under the Load submenu) is locked or unlocked. Sending “0” unlocks. A “1” locks. “0” is the default value. • LOCK:VOLTage:COILconst? Returns “0” for Coil Constant value (under the Load submenu) unlocked, or “1”...

  • Page 142: Ramp Configuration Commands And Queries

    Remote Interface Reference Ramp Configuration Commands and Queries • LOCK:ABsorber? Returns “0” for Energy Absorber Present picklist value (under the Load submenu) unlocked, or “1” for locked. • CONFigure:LOCK:BRIGHTness {0|1} Specifies whether the Display Brightness picklist value (under the Misc submenu) is locked or unlocked.
  • Page 143 Remote Interface Reference Ramp Configuration Commands and Queries section 3.12 for additional information on determining ramp rates. Also included are queries for collecting the magnet field, current, voltage, and inductance. • CONFigure:VOLTage:LIMit <voltage (V)> Sets the ramping Voltage Limit in volts. The ramping Voltage Limit may not exceed the maximum output voltage of the power supply.
  • Page 144 Remote Interface Reference Ramp Configuration Commands and Queries or A/min (per the selected ramp rate units) and the current upper bound for that range in amperes. The two return values are separated by a comma. For example: RAMP:RATE:CURRENT:1? 0.1000,50.0000 • CONFigure:RAMP:RATE:FIELD <segment>,<rate (kG/s, kG/min, T/s, T/min)>,<upper bound (kG, T)>...
  • Page 145 Remote Interface Reference Ramp Configuration Commands and Queries • FIELD:MAGnet? Returns the calculated field in kilogauss or tesla, per the selected field units. This query requires that a coil constant be defined; otherwise, an error is generated. The field is calculated by multiplying the measured magnet current by the coil constant.

  • Page 146: Ramping State Commands And Queries

    Remote Interface Reference Ramping State Commands and Queries • CONFigure:RAMPDown:RATE:FIELD <segment>,<rate (kG/s, kG/min, T/s, T/min)>, <upper bound (Kg, T)> Sets the external rampdown rate for the specified segment (values of 1 through the defined number of rampdown segments are valid) in units of kilogauss/second or minute, or tesla/second or minute (per the selected field units and rampdown rate units), and defines the field upper bound for that segment in kilogauss or tesla.

  • Page 147: Switch Heater Command And Query

    Remote Interface Reference Switch Heater Commands and Queries • DECR Places the Model 430 Programmer in the MANUAL DOWN ramping mode. Ramping continues at the ramp rate until the Current Limit is achieved (or zero current is achieved for unipolar power supplies). •...

  • Page 148: Quench State Commands And Queries

    Remote Interface Reference Quench State Control and Queries • PSwitch? Returns a “0” indicating the switch heater is OFF, or a “1” indicating the persistent switch heater is ON. • PERSistent? Returns the state of the "MAGNET IN PERSISTENT MODE" LED on the front panel of the Model 430: ‘0”...
  • Page 149 Remote Interface Reference Quench State Control and Queries • RAMPDown:COUNT? Queries the number of recorded rampdown events. Rev. 5...

  • Page 150: Trigger Functions

    Remote Interface Reference Trigger Control and Queries 4.5.10 Trigger Functions The Model 430 Programmer provides trigger functions which provide a means of collecting operational data with a minimum of commands and directing the output to either or both remote interfaces. 4.5.10.1 Description of the Trigger Functions The Model 430 Programmer defines a trigger enable register, very similar to the enable registers of the status system, which controls which data is output...
  • Page 151 Remote Interface Reference Trigger Functions Note Since trigger data is output immediately to the serial interface, it is possible to use the trigger functions to drive a terminal, modem, or a line printer (if a serial-to-parallel or serial-to-USB converter is available) connected to the serial interface.

  • Page 152: Error Messages

    Remote Interface Reference Error Messages 4.6 Error Messages If an error occurs, the Model 430 Programmer will beep, load the internal error buffer with the error code and description, and set the appropriate bits in the standard event and status byte registers if enabled by the user. Error codes are returned with a negative 3 digit integer, then a comma, and then a description enclosed in double quotes.

  • Page 153: Query Errors

    Remote Interface Reference Error Messages • -103,”Non-boolean argument” The command required a parameter in the form of 0 or 1. No other form of the parameter is allowed. • -104,”Missing parameter” The command required at least one argument which was not found before the termination character(s).

  • Page 154: Execution Errors

    Remote Interface Reference Error Messages • -203,”Query interrupted” A new query was processed before the return string of a previous query had been completely transmitted to the host. The new query clears the remaining data and replaces it with the new return string. 4.6.3 Execution Errors •...
  • Page 155 Remote Interface Reference Error Messages same number of data bits, stop bits and parity as the Model 430 Programmer (8 data bits, 1 stop bit and no parity). • -404,”Serial data overrun” The received buffer of the Model 430 Programmer was overrun. Verify that the host device has hardware handshaking (RTS/CTS) enabled.
  • Page 156 Remote Interface Reference Error Messages Rev. 5...

  • Page 157: Service

    5 Service 5.1 System Component Maintenance Caution These electronic devices are sensitive to electrostatic-discharge (ESD) damage when opened (cover removed). Observe all standard ESD precautions when handling opened power supplies and instruments. Refer to section 5.2.1 on page 140. 5.1.1 Model 430 Programmer Routine Maintenance The Model 430 Programmer was designed and manufactured to give years of reliable service.

  • Page 158: Electrostatic Discharge Precautions

    Service Troubleshooting Hints contact an AMI Technical Support Representative for assistance. Refer to “Additional Technical Support” on page 148. 5.2.1 Electrostatic Discharge Precautions The system contains components which are susceptible to damage by Electrostatic Discharge (ESD). Take the following precautions whenever the cover of electronic equipment is removed.
  • Page 159 Service Troubleshooting Hints Warning This procedure is to be performed only when the Model 430 Programmer is completely de-energized by removing the power-cord from the power receptacle. Failure to do so could result in personnel coming in contact with high voltages capable of producing life- threatening electrical shock.

  • Page 160: Failure To Load Message Displayed After Power-Up

    Service Troubleshooting Hints 5.2.3 FAILURE TO LOAD message displayed after power-up 1. Power the Model 430 Programmer off using the front panel power switch. 2. Wait at least 15 seconds. 3. Power the Model 430 Programmer on using the front panel switch. 5.2.4 Power supply unstable - magnet voltage oscillates Note If the size of the voltage oscillation is small (approximately 0.1 volt...

  • Page 161: The Power Supply System Will Not Charge The Magnet

    Service Troubleshooting Hints 5.2.5 The power supply system will not charge the magnet. 1. Verify system interconnecting wiring. Refer to section 2.5. If the Model 430 Programmer shows “+0.00 A ↑ Status: Ramping” with the supply voltage, Vs, increasing or at the programmed Voltage Limit (as indicated by the reverse video “V”...

  • Page 162: Cannot Discharge The Magnet At The Selected Ramp Rate

    Service Troubleshooting Hints power loop. Loose or oxidized interconnections often exhibit excessive resistances. 5.2.7 Cannot discharge the magnet at the selected ramp rate Note Rapid discharging of the magnet requires either an energy absorbing component or a four-quadrant power supply. If a unipolar supply is used without an energy absorbing component, only the resistance of the power leads is available as a mechanism for discharging the magnet.

  • Page 163: Cannot Bring The Magnet Out Of Persistent Mode

    Service Troubleshooting Hints 5.2.10 Cannot bring the magnet out of persistent mode. 1. If a PSwitch Error was indicated when the PERSIST. SWITCH CONTROL key was used to turn on the persistent switch heater current, then there is a problem with the wiring to the persistent switch heater.

  • Page 164: The Model 601 Fault Led Energized With Audible Alarm146

    Service Troubleshooting Hints STATION CONNECTORS and the connectors on the magnet support stand top plate. Refer to Table A-1 on page 151. 5.2.13 The system current ramps slowly from zero With the Model 601 Energy Absorber in the system, an initial charging delay will be observed when operating without an inductive load (e.g.

  • Page 165: Cannot Display The Magnetic Field Strength, Only Current

    Service Troubleshooting Hints proper current for the installed switch. Excessive currents cause excessive boiloffs. The typical switch requires approximately 45 mA to function correctly. Refer to the documentation provided with the magnet for proper operating current. See Figure 3-13 on page 77. 2.

  • Page 166: Magnet Current Drifts Unacceptably While Pswitch Cooling

    Service Troubleshooting Hints 3. Check your host communications software and make sure it is recognizing the return termination characters from the Model 430 Programmer. The return termination characters are <CR><LF>. 4. If the Model 430 Programmer is responding repeatedly with errors, try a device clear command (DCL) or powering the Model 430 Programmer off and then back on.

  • Page 167: Return Authorization

    Service Return Authorization Do not return the Model 430 Programmer or other magnet system components to AMI without prior return authorization. 5.4 Return Authorization Items to be returned to AMI for repair (warranty or otherwise) require a return authorization number to ensure your order will receive proper attention.
  • Page 168 Service Return Authorization Rev. 5...

  • Page 169: Appendix

    Appendix Magnet Station Connectors Table A-1. Magnet Station Connectors Pin Definitions Function Function LHe Sensor I+ (Red) spare − spare LHe Sensor I (Black) − spare LHe Sensor V (Yellow) LHe Sensor V+ (Blue) spare Temperature Sensor I+ (Red) spare −...

  • Page 170: Lhe Level / Temp Connectors

    Appendix Auxiliary LHe Level/Temperature Connectors Note For maximum noise immunity, use shielded cabling and connect one end of the shield to the Magnet Station Connector shell. The connectors provide an interface for connecting a single integrated instrumentation cable from the magnet support stand to the Model 430 Programmer.

  • Page 171: Current Transducer Signal Connector

    Appendix Curremt Transducer Connectors The connectors route the incoming signals from the Magnet Station Connectors to external level and/or temperature instruments. If an AMI Liquid Helium Level Instrument is purchased with the Model 430 Programmer and magnet system, an LHe level cable will be provided. Warning Although the LHe level sensor connector terminals are isolated from earth ground and therefore touching one terminal is not hazardous,...

  • Page 172: Current Transducer Power Connector

    Appendix Curremt Transducer Connectors Table A-3. Current Transducer Signal Connector Pin Definitions Function V out - not used power +15 volts out Current Transducer Power Connector POWER Caution Operating the system without power applied to the current transformer (CT) can will result in loss of control, and will probably damage the CT.

  • Page 173: Program Out Connector

    Appendix Program Out Connector Program Out Connector Table A-5. Program Out Connector Pin Definitions Function not used not used not used Program Out Common not used not used not used not used not used not used Program Out Voltage not used not used not used not used...

  • Page 174: Quench I/O Connector

    Appendix Quench I/O Connector electrically coupled. This can be accomplished through the rack mounting or by using a grounding strap between the chassis. Quench I/O Connector The Quench I/O connector provides pins for external quench detection input, quench detection output, and external rampdown input. The shell lugs of the connector are connected to the Model 430 Programmer chassis ground.

  • Page 175: External Rampdown Input

    Appendix Quench I/O Connector which the input is connected be galvanically isolated from any external circuitry. It is recommended that the external quench detection input be driven by the contacts of a low level dry contact relay, which will galvanically isolate the input from all other circuitry.

  • Page 176: External Quench Detection Output

    Appendix Quench I/O Connector a suitable cable to connect pins 5 and 6 on J2 of the 13x instrument to pins 6 and 7 of the 430 Programmer, Quench I/O connector. Caution The separate external segmented-rampdown option described below ignores the Voltage Limit during the rampdown process. Note If the number of external-rampdown ramp segments is set to zero, the modified rampdown is not used and the standard ramp rate...

  • Page 177: Aux Inputs Connector

    Appendix Quench I/O Connector Aux Inputs Connector The Aux Inputs connector provides pins for external voltage inputs, reserved for future use. The shell lugs of the connector are connected to the Model 430 Programmer chassis ground. The Aux Inputs connector is a high density 15-pin D-sub female connector.

  • Page 178: Ethernet Connector

    Appendix RS-232/422 Connector Ethernet Connector Table A-8. Ethernet RJ-45 Connector Pin Definitions Mnemonic Function TXD+ Transmit differential output + TXD— Transmit differential output — RXD+ Transmit differential input + not used RXD— Transmit differential input — not used RS-232 Connector The RS-232 connector is a standard DTE 9-pin D-sub male connector Table A-9.

  • Page 179: Abbreviations And Acronyms Used In This Manual

    Appendix Abbreviations and Acronyms Table A-9. RS-232 Connector Pin Definitions (Continued) Mnemonic Function Clear to Send Ring Indicator Table A-10. PC (DB9)-to-Model 430 RS-232 Cable Connections PC (DTE) Model 430 (DTE) DB9 Pin DB9 Pin 1, 6 6, 1 A.10 Abbreviations and Acronyms used in this Manual Table A-11.
  • Page 180 Appendix Abbreviations and Acronyms Table A-11. Abbreviations and Acronyms (Continued) Term Meaning Term referring to the family of connectors containing an odd number of D-Sub pins in two parallel rows with a 1-pin difference in pins-per-row (DB9, DB15, and DB25 are most common) Direct Current;...
  • Page 181 Appendix Abbreviations and Acronyms Table A-11. Abbreviations and Acronyms (Continued) Term Meaning The product I x R: the voltage developed by electrical current flow (I) through a resistance (R) kilogauss: a magnetic field unit of measurement Electrical circuit inductance measured in henries Light-Emitting Diode;...
  • Page 182 Appendix Abbreviations and Acronyms Table A-11. Abbreviations and Acronyms (Continued) Term Meaning Vacuum Fluorescent Display; an electronic display device which, unlike liquid crystal displays, can emit very bright, high contrast light in various colors. Voltage (I x R) developed across circuit lead or wiring resistance due to lead current flow Magnet voltage...

  • Page 183: Model 430 Programmer Specifications

    Appendix Model 430 Specifications A.11 Model 430 Programmer Specifications Table A-12. Model 430 Programmer Specifications @ 25°C Standard Model 430 Configurations: Programmable Limits Magnet Current Control Parameters ±5 A ±10 A +100 A +120 A ±125 A +200 A ±250 A +300 A +500 A Measurement Resolution (μA): 0.625 1.25...
  • Page 184 Appendix Model 430 Specifications Programmable Limits: 0.0 to 125 mA dc Accuracy: 0.2 mA Temperature Coefficient: 0.01 mA per °C Maximum Compliance: 14 V Resolution: 0.03 mA Rampdown and Quench Inputs Open Circuit Voltage: 5 Vdc ± 5% Input Resistance: 10 k-ohm ±...

  • Page 185: Power Supply Details

    Appendix Power Supply Details A.12 Power Supply Details This section provides the technical details of the individual power supply component of the AMI Model 05100PS-430-601 High-Stability Power Supply System. Warning All power supply parameters, both hardware and software, have been set by AMI, and no field adjustments or reconfiguration of the power supply should be attempted in the field.

  • Page 186: Model 08150Ps Electrical Specifications

    Appendix Power Supply Details A.12.1 Model 08150PS Electrical Specifications Table A-13 lists Model 08150PS electrical and environmental specifications. Table A-13. Model 08150PS Power Supply Specifications Specification Rating / Description Condition INPUT CHARACTERISTICS nominal 110-240 Vac Single Phase. Voltage (ac) Wide Range; contact AMI for opera- range 100-255 Vac tion to 265 Vac.
  • Page 187 Appendix Power Supply Details Table A-13. Model 08150PS Power Supply Specifications (Continued) Specification Rating / Description Condition Isolation voltage 600 Vdc or peak Either output terminal to ground. excursion 1% of E max 50% load step 2A/microsecond max. Transient recovery for load change recovery 2 msec...

  • Page 188: Figure A-1 Model 08150Ps Terminal Block Connections

    Appendix Power Supply Details Refer to Figure A-1 for Model 08150PS rear panel terminal block connections, Figure A-1. Model 08150PS Terminal Block Connections Rev. 5...

  • Page 189: Model 08150Ps Dimensional Specifications

    Appendix Power Supply Details A.12.2 Model 08150PS Dimensional Specifications Figure A-2 and Figure A-3 show dimensional specifications of the Model 08150PS. Figure A-2. Model 08150PS Dimensions - Front and Rear Views Rev. 5...

  • Page 190: Figure A-3 Model 08150Ps Dimensions - Top And Side Views

    Appendix Power Supply Details Figure A-3. Model 08150PS Dimensions - Top and Side Views Rev. 5...

  • Page 191: Model 601 And Energy Absorption

    Appendix Model 601 and Energy Absorption A.13 Model 601 and Energy Absorption In order to provide magnet discharge current control with a unipolar power supply, AMI introduces the Model 601 Energy Absorber into the current loop (refer to “Dual-Quadrant Operation” on page 10 and Figure 3- 8 on page 50).

  • Page 192: Model 601 Energy Absorber Functional Description

    Appendix Model 601 and Energy Absorption A.13.2 Model 601 Energy Absorber Functional Description The Model 601 provides a constant reverse voltage source of 5 Vdc. With this configuration, as the power supply voltage is reduced below 5 Vdc, a net reverse voltage allows controlled, active discharge of the magnet. Figure A-4.

  • Page 193: Figure A-5 Loop Voltages - Magnet Charging

    Appendix Model 601 and Energy Absorption Figure A-5). A properly selected power supply will provide the required charging voltage and current. Figure A-5. Loop Voltages - Magnet Charging Once the magnet is charged, there is no changing current and V magnet becomes zero in steady state, with the power supply providing only the voltage required for the resistive IR drops.

  • Page 194: Figure A-7 Loop Voltages - Magnet Passively Discharging

    Appendix Model 601 and Energy Absorption continues to flow driven by the self-induced magnet voltage (refer to Figure A-7). Figure A-7. Loop Voltages - Magnet Passively Discharging With a 4-quadrant power supply capable of reversing both the current and voltage, the power supply voltage would reduce to zero volts and ultimately reverse as necessary to control the current downward.

  • Page 195: Remote Computer Communication With The Model 430

    Appendix Remote Computer Communication (RS-232) discharge using a unipolar supply. The process was described earlier in section A.13.2 on page 174; (Figure A-4 is repeated here for convenience): A.14 Remote Computer Communication with the Model 430 A.14.1 Communication via RS-232 1.
  • Page 196 Appendix Remote Computer Communication (RS-232) Choose File > New Connection and in the resulting screen field, enter a name for the connection. Click on OK. From the Connect using: pull- down menu, select the appropriate COM port and click OK. Edit the communication parameters per section 4.3 on page 110 and click OK.
  • Page 197 Appendix Remote Computer Communication (RS-232) Choose File > Properties and then click on the Settings tab. Click on the ASCII Setup... button and check the Send line ends with line feeds box and the Echo typed characters locally box in the ASCII Sending area.

  • Page 198: Communication Via Ethernet

    Appendix Remote Computer Communication (Ethernet) Type *IDN? to test the connection. The Model 430 Programmer should respond with “AMERICAN MAGNETICS, INC., MODEL 430,X.X” where X.X is the firmware version. Issue commands as desired. See “Remote Interface Reference” on page 97. A.14.2 Communication via Ethernet Connect the Model 430 Programmer RJ-45 Ethernet port either...
  • Page 199 Appendix Remote Computer Communication (Ethernet) Note The Addr Assignment (Present) must show “DHCP” as originally set by AMI. Note In the following step, the IP Address is the four part number separated by periods (.), and will change with each Ethernet connection.
  • Page 200 Appendix Remote Computer Communication (Ethernet) 10. In Host address, enter the Model 430 Programmer IP address as determined previously in step 2. 11. Enter 7180 in the Port Number field. 12. From the Connect using pull-down menu, select TCP/IP (Winsock) and click OK.

  • Page 201: Upgrading The Model 430 Firmware Via Ftp

    Appendix Model 430 Firmware Upgrade via FTP 15. Click on the ASCII Setup... button and check the Send line ends with line feeds box and the Echo typed characters locally box in the ASCII Sending area. Click on OK and then OK. 16.

  • Page 202: Preparation

    Appendix Model 430 Firmware Upgrade via FTP The Model430.exe upgrade file extracted from the zip file (typically of the same name) provided by AMI. FileZilla or other appropriate FTP Client installed on the PC. For this procedure an FTP client called FileZilla is used. A.15.2 Preparation Install FileZilla or another appropriate FTP Client on the PC that...

  • Page 203: Procedure

    Appendix Model 430 Firmware Upgrade via FTP Note The Addr Assignment (Present) must show “DHCP” as originally set by AMI. Note In the following step, the IP Address is the four part number separated by periods (.), and will change with each Ethernet connection.
  • Page 204 Appendix Model 430 Firmware Upgrade via FTP b. User Name: model430admin c. Password: supermagnets d. Port: 21 Click the Quickconnect button to connect to the Model 430 – the Remote Site section of the screen will populate. On the Local Site (left side representing your PC or server file system), navigate to the folder containing the Model430.exe Rev.
  • Page 205 Appendix Model 430 Firmware Upgrade via FTP upgrade file (the folder name will be that which was previously given the new “upgrade” folder.). Double-click to open the “upgrade” folder on the Local Site (left side) of the screen – the Model430.exe file will appear. Rev.
  • Page 206 Appendix Model 430 Firmware Upgrade via FTP On the Remote Site (right side representing the Model 430 files), select the Upgrade folder. Double-click the Upgrade folder to open it (the folder will be empty). Rev. 5...
  • Page 207 Appendix Model 430 Firmware Upgrade via FTP Select the Model430.exe file from the Local Site (left side) and drag it to the open Upgrade folder on the Remote Site (right side) Turn off the Model 430. 10. Close the FTP program. Note This completes the firmware upgrade.

  • Page 208: Upgrading The Model 430 Firmware Via Flash Card Reader

    Appendix Model 430 Firmware Upgrade via Flash Card Reader A.16 Upgrading the Model 430 Firmware via Flash Card Reader Note These instructions are intended primarily for a Model 430 being upgraded from Version 1.59 or earlier. If the current version is v1.60 or later, upgrade should be performed via FTP according to section A.15 on page 183.

  • Page 209: Procedure

    Appendix Model 430 Firmware Upgrade via Flash Card Reader a. Grasp the edges of the card with the thumb and forefinger. b. Gently pull outward to remove the card. Insert the CF card into a CF reader attached to (or internal to) a host computer.
  • Page 210 Appendix Model 430 Firmware Upgrade via Flash Card Reader Choose File > Extract All… to start the extraction wizard: Click Next until prompted with Select a Destination: Browse to My Computer and choose the top level (root) of the drive associated with the CF card (for example E:\ or G:\) and select Next.
  • Page 211 Appendix Model 430 Firmware Upgrade via Flash Card Reader When prompted with the Confirm File Replace dialog, select Yes To All. When the extraction process concludes, select Finish. Close all open windows for the CF drive. Use the Safely Remove Hardware icon in the tool tray to eject (unmount) the CF card from the host computer.

  • Page 212: Model 430 Remote Control Application

    Appendix Model 430:Remote Control Application g. The following screen should appear: 14. This completes the installation and verification of the Model 430 Firmware Upgrade. A.17 Model 430 Remote Control Application Model 430 can be accessed via a network connection with fully functional control .

  • Page 213: Figure A-8 Http:// - Ip Address Or System Name Entry

    Appendix Model 430:Remote Control Application For a host computer on a network, connect a standard Ethernet cable between the Model 430 and the network. For a direct hardwired connection between the Model 430 and a host computer, use a “null-modem” or “crossover” Ethernet cable connected from the Model 430 to the host computer Once connected, plug in and power up the Model 430.

  • Page 214: Figure A-9 Initial Screen For Browser Access Of The Model 430

    Appendix Model 430:Remote Control Application <ENTER>. If entered too soon, re-enter or click the browser “refresh” icon. The following initial screen should be appear. Figure A-9. Initial Screen for Browser Access of the Model 430 The AMI Model 430 Remote Control Application is the primary feature of this screen.

  • Page 215: Model 430Ip Power Supply Programmer

    Appendix Model 430IP A.18 Model 430IP Power Supply Programmer With no front panel controls except the power On/Off switch, the Model 430IP is designed for fully functional control solely through a web browser using TCP/IP via the rear panel Ethernet connection. Operation is very similar to that of the Model 430 Remote Control Application as described in section A.17 on page 194.

  • Page 216: Figure A-12 Http:// - System Name Entry

    Appendix Model 430IP Note Allow about 90-seconds (from power-up) for the TCP/IP link between the Model 430 and host computer to be established. In order to access the Model 430IP using TCP/IP, either the Model 430 System Name or IP Address must be known. The System Name should be available from the Model 430IP configuration documentation.

  • Page 217: Figure A-14 Browser Control Of The Model 430Ip

    Appendix Model 430IP The AMI Model 430 Remote Control Application is the primary feature of this page. When selected, a view of the Model 430 being controlled with the web browser will appear (under the Operator Panel tab). Figure A-14. Browser Control of the Model 430IP All functions, except the power switch, are active and operate (using the computer mouse ) to control the hardware Model 430.

  • Page 218: Persistent Switch Operation Flowchart

    Appendix Persistent Switch Operation Flowchart A.19 Persistent Switch Operation Flowchart Start START START START START START START START START START Press PERSIST. SWITCH CONTROL remote lockout active? Is 430 at default current/ field display? Beep Is 430 in PAUSE or HOLDING mode or at ZERO? Beep Is PSwitch...

  • Page 219: Figure A-16 Persistent Switch Operation Flowchart, Page 2

    Appendix Persistent Switch Operation Flowchart ENTER ENTER MAGNET IN PERSISTENT MODE Figure A-16. Persistent Switch Operation Flowchart, Page 2 Rev. 5...

  • Page 220: Figure A-17 Persistent Switch Operation Flowchart, Page 3

    Appendix Persistent Switch Operation Flowchart Figure A-17. Persistent Switch Operation Flowchart, Page 3 Rev. 5...

  • Page 221: Index

    1 Index Index setup commands status commands abbreviations and acronyms switch heater control absolute limits system commands AMI internet e-mail address trigger commands AMI web address trigger functions summary beep conventions editing PSw P/S ramp rate protection commands editing ramp rate protection configuration queries error messages incorrect password...
  • Page 222 Index light emitting - see LED current limit display custom ps asterisk max output current brightness max output voltage current min output current field / current min output voltage field units displayed up/down arrow magnet quench indicator enter key vs. esc. key mode status indicators general description up/down arrow...
  • Page 223 Index ramp / pause net settings submenu ramp rate net setup submenu ramp to zero supply submenu ramp/pause misc submenu shift coil constant lock shift persistent switch control current limit lock target field setpoint display brightness voltage limit display brightness lock external rampdown lock field / current lock field units...
  • Page 224 Index RS-232 110, system rack layout system terminology system troubleshooting operating modes unipolar > bipolar bipolar voltage-voltage mode dual-quadrant power up/down sequence operating voltage, changing powering system off operation powering system on operational limits power-up test programmed current protection password password protective diode persistent mode...
  • Page 225 Index RS-232 configuration min output current connector 110, 160, 161, min output voltage null-modem/crossover cable 110, select power supply v-v mode range parameters system features termination characters system interconnects system name safety cryogens terminal torque limits equipment test procedure legend xvii torque limit on terminals quenches...
  • Page 226 Index Rev. 5...

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05500ps-430-601

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