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American Magnetics 430 Installation, Operation And Maintenance Instructions

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EXCELLENCE IN MAGNETICS AND CRYOGENICS
MODEL 430 POWER SUPPLY
PROGRAMMER
INCLUDING HIGH-STABILITY OPTION &
MULTI-AXIS APPLICATIONS
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. 9, July 2017

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Summary of Contents for American Magnetics 430

  • Page 1 EXCELLENCE IN MAGNETICS AND CRYOGENICS MODEL 430 POWER SUPPLY PROGRAMMER INCLUDING HIGH-STABILITY OPTION & MULTI-AXIS APPLICATIONS 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. 9, July 2017...

  • Page 3: Table Of Contents

    Model 430 Programmer Features ........
  • Page 4 Changing the Model 430 Programmer Operating Voltage ....... . .
  • Page 5 MERICAN AGNETICS ABLE OF ONTENTS Field / Current Display ............51 Voltage Display.
  • Page 6 MERICAN AGNETICS ABLE OF ONTENTS Protection Submenu ............. . 88 Misc Submenu .
  • Page 7 MERICAN AGNETICS ABLE OF ONTENTS Serial Connector..............143 Termination Characters .
  • Page 8 Upgrading the Model 430 Firmware via FTP....... . . 213...

  • Page 9: Foreword

    ANUAL Introduction introduces the reader to the functions and characteristics of the Model 430 Power Supply Programmer. It provides illustrations of the front and rear panel layouts as well as documenting the performance specifications. Additional information is provided in the form of system circuit diagrams.

  • Page 10: Applicable Hardware

    • Optional Short-Sample operational mode. PPLICABLE ARDWARE The Model 430 Programmer has been designed to operate with a wide variety of switch mode and linear power supplies from a variety of manufacturers. However, not all compatible power supplies have been tested.

  • Page 11: General Precautions

    MERICAN AGNETICS OREWORD ENERAL RECAUTIONS Kepco BOP 20-10M 4-quadrant linear power supply (±20 V @ ±10 A) Kepco BOP 20-20M 4-quadrant linear power supply (±20 V @ ±20 A) Consult with an AMI Technical Support Representative for other approved power supplies. ENERAL RECAUTIONS The two most common cryogenic liquids used in superconducting...

  • Page 12: Treating Cold Burns

    MERICAN AGNETICS OREWORD ENERAL RECAUTIONS In the event a person is burned by a cryogen or material cooled to REATING URNS 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 13: Magnet Quenches In Lhe-Cooled Systems

    MERICAN AGNETICS OREWORD ENERAL RECAUTIONS Metals to be used for use in cryogenic equipment application must posses sufficient physical properties at these low temperatures. Since ordinary carbon steels, and to somewhat a lesser extent, alloy steels, lose much of their ductility at low temperatures, they are considered unsatisfactory and sometimes unsafe for these applications.

  • Page 14: Safety Summary

    The Model 430 Programmer has been designed with safety interlocks to assist the operator in safe operation, but these designed-in features cannot replace an operator’s understanding of the system to...

  • Page 15: Safety Legend

    MERICAN AGNETICS OREWORD AFETY UMMARY • Cryogenic gloves • Face shield • Signs to indicate that there are potentially hazardous magnetic fields in the area and that cryogens are in use in the area. Instruction manual symbol: the product is marked with this AFETY EGEND symbol when it is necessary for you to refer to the instruction...
  • Page 16 MERICAN AGNETICS OREWORD AFETY UMMARY...

  • Page 17: Introduction

    ODEL ROGRAMMER EATURES The AMI Model 430 Programmer is a sophisticated digital power supply controller which allows an operator to manage a superconducting magnet system with unprecedented accuracy and ease of use. The Model 430 Programmer provides a degree of flexibility and accuracy previously unavailable in an economical commercial product.

  • Page 18: High-Stability Option

    The menus are also presented in a logical fashion so that the operation of the Model 430 Programmer is intuitive to the user. The provision of a velocity-sensitive rotary encoder on the front panel also allows the operator to interactively fine-adjust many of the operating parameters of the magnet system.

  • Page 19: Condition-Based Magnet Auto-Rampdown

    200 of the Appendix. Contact AMI for more information. In addition to low LHe level, inputs to the Model 430 Programmer can be used with other instrumentation as well. Other uses include faults from a...

  • Page 20: Model 430 Front Panel Layout

    430 F MERICAN AGNETICS NTRODUCTION ODEL RONT ANEL AYOUT 430 F ODEL RONT ANEL AYOUT...

  • Page 21: Model 430 Rear Panel Layout

    430 R MERICAN AGNETICS NTRODUCTION ODEL ANEL AYOUT 430 R ODEL ANEL AYOUT...
  • Page 22 430 R MERICAN AGNETICS NTRODUCTION ODEL ANEL AYOUT...

  • Page 23: Model 430 Specifications @ 25 °C

    MERICAN AGNETICS NTRODUCTION ODEL PECIFICATIONS 430 S @ 25 °C ODEL PECIFICATIONS Magnet Current Control Standard Model 430 Factory Configurations: Programmable Limits Parameters ±5 A ±10 A +100 A +120 A ±125 A ±250 A +300 A +240 A +600 A Measurement Resolution (μA):...
  • Page 24 430 S @ 25 °C MERICAN AGNETICS NTRODUCTION ODEL PECIFICATIONS Persistent Switch Heater Output Programmable Limits: 0.0 to 100 mA DC Accuracy: 0.2 mA Temperature Coefficient: 0.01 mA / °C Maximum Compliance: 14 V Resolution: 0.03 mA Rampdown and Quench Inputs Open Circuit Voltage: 5 VDC ±5%...

  • Page 25: Operating Characteristics

    HARACTERISTICS PERATING HARACTERISTICS The Model 430 Programmer has been designed to perform with various power supplies to allow the user the greatest degree of system flexibility. The power supply and Programmer combination are categorized by one of three forms: single-quadrant, dual-quadrant, and four-quadrant. For...

  • Page 26: Dual-Quadrant Operation

    Magnet Switch Coil(s) Unipolar (optional) Power Supply Model 430 Shunt Single-Quadrant System with Resistive Shunt In the Bipolar Power Supply System, an energy absorber is added in UADRANT series with the unipolar supply; this allows stored magnetic energy to be...

  • Page 27: Four-Quadrant Operation

    AC power loss and magnet quenching are available at reasonable prices. Misc. Line Losses Current Persistent Magnet Switch Four-Quadrant Coil(s) (optional) Power Supply Model 430 Shunt Four-Quadrant System with Resistive Shunt...
  • Page 28 MERICAN AGNETICS NTRODUCTION PERATING HARACTERISTICS...

  • Page 29: Installation

    AMI facilities as described in the Service section of this manual. If used in a manner not specified in this manual, the WARNING protection provided by the design, manufacture and documentation of the Model 430 Programmer may be impaired.

  • Page 30: Inspecting And Unpacking

    ODEL ROGRAMMER If the Model 430 Programmer system is to be used on a table top, place it on a flat, secure surface capable of handling the weight. The Model 430 Programmer uses an internal fan for forced-air cooling. Allow at least 1/2 inch spacing on each side of the unit for proper ventilation.

  • Page 31: Changing The Model 430 Programmer Operating Voltage

    If the Model 430 Programmer operating voltage must be changed, ensure the instrument is de-energized by disconnecting the power cord from the power source. Remove the Model 430 Programmer cover by removing the four screws on both sides of the cover and the four screws from the corners of the cover on the back panel;...

  • Page 32: Collecting Necessary Information

    An example of the data to be entered and how it is entered is described on page 108. 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 33 The main instrumentation cable connecting the MAGNET magnet support stand to one of the Model 430 Programmer STATION connectors contains all the instrumentation and control connections needed to control and monitor the magnet. The signals in this cable which are required to monitor LHe level and temperatures are also presented at the LHe Level/Temp Connectors.

  • Page 34: Unipolar Power Supply System

    YSTEM The Model 430 Programmer can be used in the single-quadrant mode. The magnet power supply system consists of the Model 430, a unipolar power supply and associated interconnection cabling. AMI does not recommend single-quadrant operation with large inductive, high-current loads due to the extremely long discharge times involved.
  • Page 35 MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS INGLE YSTEMS...
  • Page 36 . Refer to page 195. i. Optional: Install an instrumentation cable between the QUENCH I/O connector ~ä on the rear of the Model 430 Programmer and Aux I/O connector on the rear panel of the Model 1700 Liquid Level ~í Instrument .

  • Page 37: Bipolar Power Supply System

    YSTEM For the bipolar (dual-quadrant) mode with shunt method of current sensing, the magnet power supply system consists of the Model 430 Programmer, one or more unipolar 08150PS power supplies (each typically configured for +10 VDC/120 A output), and one or more Model 601 Energy Absorber with associated interconnection cabling and buswork.
  • Page 38 MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS INGLE YSTEMS...
  • Page 39 Connect the DB15 analog I/O cable from the PROGRAM OUT ~å connector on the back of the Model 430 Programmer to the DB15 ANALOG I/O connector on the rear of the power supply unit. h. Install an instrumentation cable between the magnet support stand ~í...

  • Page 40: High-Stability Bipolar Power Supply System

    Current stability of the system can be increased by an order of magnitude through application of the zero flux method of current sensing. For the bipolar (dual-quadrant) mode high-stability magnet power supply, the system consists of the Model 430 Programmer with precision current sensing, one or more unipolar 08150PS Power Supplies...
  • Page 41 MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS INGLE YSTEMS...
  • Page 42 Programmer. j. Connect the special DB15 analog I/O cable from the PROGRAM OUT connector ~ã on the back of the Model 430 Programmer to the DB15 ANALOG I/O connectors on the rear of the Master ~ë each Slave power supply unit.
  • Page 43 MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS INGLE YSTEMS p. Remote communications via Ethernet and/or RS-232 can be accomplished by connecting suitable cabling to the Model 430 Programmer rear panel ETHERNET and/or RS-232 connectors.

  • Page 44: High-Current Four-Quadrant Power Supply System

    Model 430 Programmer to the power supply COMMON terminal d. Connect the DB15 cable from the PROGRAM OUT connector ~ä on the back of the Model 430 Programmer to the ANALOG I/O connector on the rear of the power supply.
  • Page 45 MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS INGLE YSTEMS...
  • Page 46 . Refer to page 195. g. Optional: Install an instrumentation cable between the QUENCH I/O connector ~â on the rear of the Model 430 Programmer and Aux ~í I/O connector on the rear panel of the Model 1700 Liquid Level Instrument.

  • Page 47: High-Current, High-Stability 4-Quadrant Power Supply System

    Programmer. d. Connect the DB15 cable from the PROGRAM OUT connector ~ã on the back of the Model 430 Programmer to the ANALOG I/O connector on the rear of the power supply. e. Install an instrumentation cable between the magnet support stand...
  • Page 48 MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS INGLE YSTEMS...
  • Page 49 . Refer to page 195. g. Optional: Install an instrumentation cable between the QUENCH I/O connector ~ä on the rear of the Model 430 Programmer and Aux ~â= I/O connector on the rear panel of the Model 1700 Liquid Level Instrument.

  • Page 50: Low-Current, High-Resolution 4-Quadrant Power Supply System

    AMI offers a low-current (5 A or 10 A rated) system option to achieve high-resolution control of the magnet current. The components include a Model 430 Programmer, a Model 4Q1005PS or Model 4Q1010PS low- current four-quadrant power supply, and associated interconnecting cabling.
  • Page 51 MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS INGLE YSTEMS...
  • Page 52 . Refer to page 195. h. Optional: Install an instrumentation cable between the QUENCH I/O connector ~ä on the rear of the Model 430 Programmer and Aux ~â I/O connector on the rear panel of the Model 1700 Liquid Level Instrument.

  • Page 53: System Interconnects (Multi-Axis Systems)

    The Magnet Station Cable carries the signals between the cryostat and system rack equipment. For standard helium-based (non-recondensing) systems, the Magnet Station Cable connects directly to the Model 430 Power Supply Programmer. However, for helium-recondensing or cryogen-free systems, the Magnet Station Cable connects to the Model 430 through a distribution or breakout box.

  • Page 54: Standard (Non-Recondensing) Helium-Based 2-Axis System Signal Interconnects

    MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS ULTI YSTEMS TANDARD RECONDENSING ELIUM BASED YSTEM IGNAL NTERCONNECTS AMERICAN MAGNETICS, INC. OAK RIDG E, TN, USA 100-240Vac 50-60 Hz 200 VA AUX I/O VALVE CONTROL RS-232 ETHERNET Two-Axis Standard Helium System Signal Interconnections...

  • Page 55: Standard (Non-Recondensing) Helium-Based 3-Axis System Signal Interconnects

    MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS ULTI YSTEMS TANDARD RECONDENSING ELIUM BASED YSTEM IGNAL NTERCONNECTS AMERICAN MAGNETICS, INC. OAK RIDG E, TN, USA 100-240Vac 50-60 Hz 200 VA AUX I/O VALVE CONTROL RS-232 ETHERNET Three-Axis Standard Helium System Signal Interconnections...

  • Page 56: Recondensing Helium-Based 2-Axis System Signal Interconnects

    MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS ULTI YSTEMS ECONDENSING ELIUM BASED YSTEM IGNAL NTERCONNECTS AMERICAN MAGNETICS, INC. OAK RIDG E, TN, USA 100-240Vac 50-60 Hz 200 VA AUX I/O VALVE CONTROL ETHERNET RS-232 Two-Axis Recondensing Helium System Signal Interconnections...

  • Page 57: Recondensing Helium-Based 3-Axis System Signal Interconnects

    MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS ULTI YSTEMS ECONDENSING ELIUM BASED YSTEM IGNAL NTERCONNECTS AMERICAN MAGNETICS, INC. OAK RIDG E, TN, USA 100-240Vac 50-60 Hz 200 VA AUX I/O VALVE CONTROL ETHERNET RS-232 Three-Axis Recondensing Helium System Signal Interconnections...

  • Page 58: Cryogen-Free 2-Axis System Signal Interconnects

    MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS ULTI YSTEMS RYOGEN YSTEM IGNAL NTERCONNECTS Two-Axis Cryogen-free System Signal Interconnections RYOGEN YSTEM IGNAL NTERCONNECTS Three-Axis Cryogen-free System Signal Interconnections...

  • Page 59: Third-Party Power Supplies

    ARTY OWER UPPLIES The Model 430 Programmer has been designed to function with a wide variety of third-party power supplies. Please contact an AMI Technical Support Representative for compatibility with specific models. Custom modifications can sometimes be made to accommodate supplies that are not compatible with the standard Model 430 configurations.

  • Page 60: Short-Circuit Or Resistive Load

    If operating with a short-circuit as a load without the presence of a superconducting magnet or with the power leads shorted at the cryostat, the Model 430 Programmer Stability Mode must be configured for Test (see page 78). If you have purchased a superconducting magnet with the Model...

  • Page 61: Power-Up And Test Procedure

    (i.e. zero resistance load) is very difficult to control in voltage mode and may be unstable. 3. Energize the Model 430 Programmer by placing the power switch in the I (ON) position. 5. If the system shipped with CamLoc quick-disconnect connectors, they may be quickly discon-...
  • Page 62 (some produce an audible “click” during power-up), and then press ENTER on the Model 430 Programmer. If there is more than one power supply, observe the proper master/slave power-up procedure.
  • Page 63 Model 430 Programmer. The current measurement system incorporated in the Model 430 is more accurate than the power supply shunt. 12.Set the Target Setpoint to the Current Limit value. Refer to page 88 to deter- mine the Current Limit value.
  • Page 64 MERICAN AGNETICS NSTALLATION OWER P AND ROCEDURE...

  • Page 65: Operation

    This section describes the operation of the Model 430 Programmer. Every menu and submenu item is illustrated and described in detail. An example setup of the Model 430 Programmer is presented on page 108. An example ramping operation is presented on page 121.

  • Page 66: Energizing The Power Supply And Components

    OWER EQUENCE If the display instead appears as illustrated below, turn the Model NOTE 430 Programmer off, wait 15 seconds or more, and power the Model 430 Programmer back on. AMI Model 430 Programmer FAILURE TO LOAD. When powering the system off, first turn off the power supply controlled by the Model 430 Programmer followed by the Model 430 Programmer.

  • Page 67: Model 430 Programmer Default Display

    This is always displayed in the upper left corner of the display (see the ISPLAY figure above), regardless of what else is being displayed on the Model 430 Programmer display. The parameter displayed (field or current) is SHIFT FIELD <> CURRENT...

  • Page 68: Voltage Display

    In order for the Model 430 Programmer to measure the magnet voltage, the magnet voltage taps must be connected to the Model 430. Normally this is done through the Magnet Station Cable provided by AMI (if the whole magnet system is provided by AMI).

  • Page 69: Status Indicator

    111. The persistent switch heater state is displayed on the bottom line of the main display. If the Model 430 Programmer has been setup for use with a persistent switch, it will indicate either ON or OFF for the persistent...

  • Page 70: Entering Numeric Values

    Values are not applied to the operation of the ENTER Model 430 Programmer until the key is pressed and the asterisk disappears from the display. Attempts to set a parameter to a value 3. Certain menu items requiring numeric data can also be entered using the fine adjust knob...

  • Page 71: Using The Fine Adjust Knob

    AGNETICS PERATION SING THE DJUST outside of the valid range are ignored, and if attempted the Model 430 Programmer will beep once, indicate the error, and revert to the previous setting. If the key is pressed while numeric entry is active and digits have been entered, the entered digits will be cleared and the cursor will remain for reentry of a new desired value.
  • Page 72 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 73: Selecting Picklist Values

    When the item selector is pointing at the desired picklist value, press the ENTER key to accept the picklist value. Values are not applied to the ENTER operation of the Model 430 Programmer until the key is pressed and the asterisk disappears from the display.

  • Page 74: Single-Key Commands / Menus

    PSw P/S Ramp Rate setting. SHIFT PERSIST. SWITCH CONTROL Pressing followed by the toggles the Model 430 Programmer persistent switch heater between energized (turned on) and de-energized (turned off). If the persistent...
  • Page 75 MAGNET IN PERSISTENT MODE persistent mode is indicated by the The Model 430 Programmer will beep once (indicating an error) if the user attempts to activate the switch heater control without first indicating a persistent switch is installed in the Switch submenu and specifying the...
  • Page 76 25%. 8. See page 86. 9. The additional provision of connecting the magnet voltage taps to Auxiliary Input 1 must be addressed if using a Model 430 with firmware prior to version 3.00. See page 202.

  • Page 77: Target Field Setpoint Key

    RAMP / PAUSE between the ramping mode and the paused mode. If the key is pressed while the Model 430 is ramping, the ramping is paused. If RAMP / PAUSE key is pressed while the Model 430 is paused, the Model 430 continues ramping.

  • Page 78: Ramp To Zero Key

    Ramping to zero may be interrupted RAMP / PAUSE at any time by pressing the key, which causes the Model 430 Programmer to enter the PAUSED mode and maintain the field/current present at the point it was paused. RAMP TO ZERO RAMP /...

  • Page 79: Ramp Rate (Shift+1)

    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.
  • Page 80 (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 .
  • Page 81 ±58 A (up to the limit of 60 A), ramping will be controlled at ±0.05 A/sec. If ramp rate of a ramp segment is being edited while the Model 430 is ramping and the system current/field transitions from the currently edited segment to the next before the adjustment has ENTER...

  • Page 82: Voltage Limit (Shift+2)

    SHIFT+2) key provides a menu for setting OLTAGE IMIT the limit for output voltage for the power supply the Model 430 HIFT Programmer controls. This value should be set to a high enough value so that under normal conditions, the Voltage Limit is never reached. The value can be set by using either the numeric keypad entry as described page 54 or the fine adjust knob (on page 55).

  • Page 83: Reset Quench (Shift+3)

    430 is using current units (A) and the SHIFT-key is pressed, the Model 430 will begin using field units (either kG or T). 22. See page 88. 23. 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 the stored (i.e.

  • Page 84: Decrement Field (Shift+6)

    : SHIFT+ MERICAN AGNETICS PERATION OMMANDS ENUS The Model 430 Programmer cannot use field units unless a valid NOTE coil constant has been entered DECR. FIELD (SHIFT+6) key is used to manually decrease the ECREMENT IELD current/field. This is done at the defined ramp rate(s).

  • Page 85: Stability (Shift+9)

    (SHIFT+9) key provides a shortcut to the menu for TABILITY HIFT defining the Model 430 stability setting. The stability setting is specified in percent and controls the transient response and stability of the system. The valid input 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 86: Led Indicators

    NDICATORS LED I NDICATORS The Model 430 Programmer has six front panel LED indicators. See the front panel illustration and table on page 4 for the location of these indicators. The green power-on LED indicates that the Model 430 Programmer is...

  • Page 87: Shift Indicator

    Should the magnet quench while the magnet is in persistent NOTE mode and the Model 430 Programmer is off, the persistent mode indicator LED will be incorrect when the Model 430 Programmer is turned on again.

  • Page 88: Setup Menu

    PERATION ETUP AVIGATION ETUP Setup of the Model 430 Programmer requires the user to navigate the setup menu. Navigation of the setup menu is intuitive — quite similar, for example, to the use of a cell phone menu. NTERING XITING...

  • Page 89: Setup Submenu Descriptions

    MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UPPLY UBMENU ETUP UBMENU ESCRIPTIONS When a submenu is entered by selecting a submenu item and pressing ENTER (see page 72 for details of menu navigation), the user will be able to edit parameters under that submenu. The Setup menu structure in summarized in the figure below: SETUP MENU SUBMENUS...
  • Page 90 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UPPLY UBMENU The Supply submenu is unique in that it has only the Select Supply NOTE picklist as a sublevel (unless Custom is chosen from the picklist of Select Supply options). For this reason, picklist entry is active as soon as the Supply submenu is selected;...
  • Page 91 A, up to 600 A depending on the system selected. b. The Kepco BOP power supplies are used in the 4Q1005PS-430 and 4Q1010PS-430 systems are limited to only one-half the output voltage range since the supplies are designed to safely dissipate only one-half the rated power output.
  • Page 92 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UPPLY UBMENU The power supply settings define the output voltage and current ranges for a specific power supply. For example, V-I diagrams are presented in the diagram below for the AMI 12100PS and AMI 4Q06125PS selections. The AMI 12100PS operates as a one-quadrant system without the addition of an energy absorber.
  • Page 93 The maximum output current is specified in amperes (A) and reflects the maximum output current capacity of a connected 32. The minimum and maximum output currents are also bounded by the Model 430 Program- mer configuration (refer to specifications on page 7 and in the Appendix). The entered value...

  • Page 94: Load Submenu

    The remote programming voltage is the output signal provided by the Model 430 Programmer as an input to the connected power supply. This submenu item provides a picklist of six preset selections and does not allow numeric entry of a range.
  • Page 95 For stabilizing resistor configurations, use the Stability Setting plot specified in the next section for magnets with a persistent switch. 34. Effective with Model 430 firmware version 1.62 or later, magnets without a switch may be operated without a stabilizing resistor present using the Stability Settings specified.
  • Page 96 Model 420 Stability Setting vs. Magnet Inductance Inductance (H) Stability Setting vs. Magnet (with PSwitch) Inductance The Model 430 Programmer internal control loop gain is proportional to the multiplier (100% – [Stability Setting]). For this reason, small changes in stability setting have a large effect on stability as the value approaches 100%.
  • Page 97 0.5% 44% to 84% 0% to 44% The Model 430 will not operate in a stable fashion on a short- NOTE circuit load unless it is configured for Test stability mode (see page 78). Otherwise the 430 control logic assumes an inductive superconducting magnet load is connected to the circuit.
  • Page 98 The magnet inductance value is saved between power cycles. The magnet inductance value, when entered, is immediately used for control gain configuration if the Model 430 is set for Auto stability mode (see page 78). 35. See page 111.

  • Page 99: Switch Submenu

    PSw P/S Ramp Rate, and PSwitch Cooling Gain settings are made available within the Switch submenu. 36. The Model 430 Programmer will bring the output voltage of the power supply to the point where the energy absorber can provide current to the magnet.
  • Page 100 2. The power supply current is ramped to 2 A at 0.1 A/sec. 3. After the power supply current reaches 2 A, the persistent switch cur- rent is slowly increased (as shown on the display) until the Model 430 Programmer detects a change in the load, indicative of the persistent switch transitioning from superconducting to resistive.
  • Page 101 (~0.5 mV/bit) than the standard magnet voltage input. Model 430 units that ship with version 3.00 or later firmware installed have internally connected the magnet voltage input from the Magnet Station connector to the Auxiliary Input 1 (therefore, the Auxiliary Input 1 is consumed and is not available for general use).
  • Page 102 During the persistent switch heating period, the Model 430 Programmer ramping functions are disabled. The time delay is necessary to ensure that the Model 430 will not switch to the higher control gain required for proper magnet operation before the magnet is actually available in the circuit (not being shunted by the persistent switch).
  • Page 103 For dry switches, the operator may want to consider the optional magnet voltage switch transition detection method if magnet voltage taps are available and connected to the Model 430 Programmer. WITCH...

  • Page 104: Protection Submenu

    MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS ROTECTION UBMENU WITCH OOLING 0.00 A PSwitch Cooling Gain (%) 0.00 Vs The default cooling gain of 0.0% may be adequate for the majority of wet persistent switches. However, this setting can offset magnet field/current drift during persistent switch cooling, especially with conduction cooled switches which generally require longer cooling times.
  • Page 105 If AMI is not supplying the magnet of if the specific magnet data has not been provided by the customer, the Model 430 will ship with the Current Limit set at the default value of ±80 A. The figure on the following page shows the default Current Limit (±80 A) and a Voltage Limit (±2.5 V) as a...
  • Page 106 If set to Tmax, the detection logic will only be based on the input temperature from an external measurement device that is connected to Auxiliary Input 3 on the rear panel of the Model 430 (see page 202). If set to Both, the quench detection logic will operate on both the magnet current and the temperature measurement provided via Auxiliary Input 3.
  • Page 107 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS ROTECTION UBMENU be increased (i.e. More sensitivity) until all quenches are detected. PERATIONAL IMITS +50.00 A — Operational Limits f(T) +0.50 Vs Edit Constants This heads a menu subsection containing various constants associated with protection based on a linear relationship for a maximum allowable current, termed as Ic, given a temperature measured via the Auxiliary Input 3 (see page 202).
  • Page 108 Setpoint is checked only during a new entry against the presently calculated value of Ic and the new entry must be less than or equal to Ic. The Model 430 Programmer will beep once, indicate an error, and deny the new entry to the Target Field/Current Setpoint if the value exceeds Ic.
  • Page 109 This value is a maximum allowable system temperature as measured via the Auxiliary Input channel 3 in Kelvin. The Model 430 Programmer will limit entry of the Target Field/Current Setpoint to a value of zero if the present temperature exceeds...
  • Page 110 — External Rampdown Enabled? 0.00 Vs The External Rampdown function of the Model 430 Programmer can be used to allow an external contact-signal to cause the magnet to be ramped to zero field (even if it is in persistent mode) should a fault or alarm occur in a magnet system. Signals...

  • Page 111: Misc Submenu

    When this value is 1, there is only one ramp rate for the Model 430 Programmer, used for the full available current range. For multiple ramp rates, set the value to the number of ramp segments desired (up to ten segments). See page 63 for details regarding the use of ramp rate segments.
  • Page 112 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 113 Current Limit setting from use by the general user. If an attempt is made to use a locked command or setting, the Model 430 Programmer beeps twice; the command is not accepted and the setting is not altered. ENTER...
  • Page 114 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UBMENU ARGET IELD ETPT +50.00 A — Target Field Setpt Lock +0.50 Vs Locked Unlocked TARGET FIELD This picklist value specifies whether use of the SETPOINT key is locked or unlocked. The default value is Unlocked.
  • Page 115 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UBMENU Custom..., then setting Power Supply Lock to Locked also prevents the custom power supply parameters (Min Output Voltage, Max Output Voltage, Min Output Current, Max Output Current and V-V Mode Input Range) from being edited. The default value is Unlocked.
  • Page 116 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UBMENU IELD NITS +50.00 A — Field Units Lock +0.50 Vs Locked Unlocked This picklist value specifies whether the Field Units value is FIELD locked or unlocked (whether accessed through the UNITS key menu or under the Misc submenu). The default value is Unlocked.
  • Page 117 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UBMENU ETER +50.00 A — Volt Meter Lock +0.50 Vs Locked Unlocked VOLT METER This picklist value specifies whether use of the SHIFT-key command is locked or unlocked. The default value is Unlocked. DJUST +50.00 A —...
  • Page 118 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UBMENU picklist value, PSwitch Current Detect, PSwitch Current value, PSwitch Transition picklist value, PSwitch Heated Time value, PSwitch Cooled Time value, PSwitch P/S Ramp Rate value, and the PSwitch P/S Cooling Gain value. The default value is Unlocked.
  • Page 119 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UBMENU ISPLAY RIGHTNESS +50.00 A — Display Brightness Lock +0.50 Vs Locked Unlocked This picklist value specifies whether the Display Brightness picklist value (under the Misc submenu) is locked or unlocked. The default value is Unlocked. ETUP +50.00 A —...

  • Page 120: Net Settings Submenu

    . If the second password entry does not match the first password entry, the Model 430 Programmer beeps and the user is prompted again to re-enter the new password. The new password is not accepted until it is confirmed by entering the same password a second time.
  • Page 121 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 IP address assignment is by DHCP server, this value is typically set by the network DHCP server.

  • Page 122: Net Setup Submenu

    IP address is assigned. 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 123 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS ETUP UBMENU IP A YSTEM DDRESS +50.00 A — System IP Address +0.50 Vs 0.0.0.0 If IP Address Assignment is Static, then the system IP address can be assigned by the user. The default value is 0.0.0.0. This item is only available in the Net Setup submenu if IP Address NOTE Assignment is Static.

  • Page 124: Example Setup

    XAMPLE ETUP As a precursor to operating a superconducting magnet with the Model 430 Programmer and power supply, all of the setup items should be reviewed and set if necessary with appropriate values for the connected superconducting magnet. The figure at left shows an exam- American Magnetics, Inc.
  • Page 125 MERICAN AGNETICS PERATION XAMPLE ETUP The table below provides a summary of the Model 430 Programmer setup parameters for this example. Example Setup Configuration Parameter Setting Select Supply AMI 4Q06125PS Stability Mode Auto Coil Constant (kG/A) 0.934 Inductance (H) Energy Absorber Present...

  • Page 126: Ramping Functions

    A desired ramp rate should be selected by the user and entered into the Model 430 Programmer. A Voltage Limit should also be specified that is greater than or equal to the voltage calculated from the equations above plus energy absorber voltage (if installed) plus power lead voltage drop (usually less than 2 V).

  • Page 127: Manual Ramping

    Ramping is being controlled by the manual control (INCR. FIELD Manual Up/Down and DECR. FIELD) SHIFT-key functions available on the front panel. RAMP TO ZERO is active, and the Model 430 Programmer is ramp- Zeroing Current ing current to 0 A.

  • Page 128: Ramping To Zero

    RAMP / PAUSE will begin when the 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 on page 63. RAMP TO ZERO...

  • Page 129: Persistent Switch Control

    The Model 430 Programmer remembers the state of the persistent switch during the time that the Programmer is de-energized. If the Model 430 is turned on when its shut down state was such that the persistent switch was heated and commanding zero current (the normal state after the magnet is discharged), the following screen will be displayed.

  • Page 130: Procedure For Entering Persistent Mode

    1. Use either automatic or manual ramping to achieve the desired field or cur- rent in the magnet. 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.
  • Page 131 The following steps d through f apply only if the magnet voltage does not remain at zero. 50. Pressing the ESC key will terminate the command and return the Model 430 Programmer to the default screen. 51. Refer to on page 86 for timer-based switch transitions.
  • Page 132 +50.00 A Mode: Paused w/PSW error +0.06 Vm Press ENTER to continue f. After pressing ENTER, the Model 430 Programmer will revert to the default field/current display. +50.00 A Mode: Paused +0.00 Vm PSwitch Heater: ON 5.

  • Page 133: Procedure For Exiting Persistent Mode

    To exit the persistent mode of magnet operation, the user should perform the following steps: 1. If the Model 430 Programmer has not been powered off since the magnet was placed in persistent mode, proceed to step 3. 2. If the Model 430 Programmer has been powered off since the magnet was placed in persistent mode, complete the following steps (a) and (b) below before proceeding to step 3.
  • Page 134 MERICAN AGNETICS PERATION ERSISTENT WITCH ONTROL 3. Press PERSIST. SWITCH CONTROL and the Model 430 display prompts with: 0.00 A Press ENTER to exit 0.00 Vs Persistent Mode Should the user desire not to exit persistent mode, press NOTE PERSIST.
  • Page 135 The magnet voltage (Vm) is monitored during the switch heating NOTE cycle. If the voltage is greater than 0.5 V, the Model 430 Programmer will beep and display a message to indicate a mismatch between the magnet current and power supply current.

  • Page 136: Toggling The State Of The Persistent Switch Heater

    3. At the end of the switch heating period, the MAGNET IN PER- SISTENT MODE LED will be turned off and the Model 430 Pro- grammer will be in the PAUSED mode.

  • Page 137: Ramping Functions Example

    TARGET CURRENT 1 -50 A Ramping to Two Different Target Field/Current Settings Point 1. The current is 0 A and the Model 430 Programmer is in the PAUSED mode. The user sets the target field/current to -28.000 A. The RAMP / PAUSE key is pressed so that the PAUSED mode is no longer active and the Model 430 begins ramping current.
  • Page 138 AMPING UNCTIONS XAMPLE Point 6. The target field/current setting of +40.000 A is achieved and the Model 430 Programmer switches to HOLDING mode. At this point the PERSIST. user deactivates the persistent switch heater by pressing the SWITCH CONTROL key, which removes the magnet from the circuit.

  • Page 139: Quench Detection

    Model 430 will trigger a quench detection. The Model 430 may also be configured to use both the current mismatch and temperature detection methods and trigger a quench if either indicate a problem.

  • Page 140: External Quench Detection

    The rear panel Quench I/O connector provides pins for external quench input (contact closure — see page 199 of the Appendix for the connector pinout). If the quench input is asserted, then the Model 430 Programmer interprets this input as indication of a quench condition and the Model...

  • Page 141: External Rampdown

    Under most operating conditions this will not damage any internal protection circuits of the magnet. If an actual quench condition occurs, the Model 430 will follow the magnet current to zero unless the user intervenes.

  • Page 142: External Rampdown While In Persistent Mode

    The following steps and associated screen displays describe the process that occurs after external rampdown is initiated while the magnet is in persistent mode: 1. The Model 430 Programmer first ramps the power supply to the magnet cur- rent. ...

  • Page 143: External Rampdown While Not In Persistent Mode

    The power supply is already at (and in control of) the magnet current, so the Model 430 Programmer executes an ordinary rampdown: 1. The rampdown begins immediately as described on page 126 (step 4 of “External Rampdown while in Persistent Mode”):...

  • Page 144: Summary Of Limits And Default Settings

    The table below provides a summary of the operational limits and the default setting for all Model 430 Programmer parameters. If the user attempts to enter a value outside of the limits, the Model 430 Programmer will beep once, indicate an error, and revert to the previous setting.

  • Page 145: Remote Interface Reference

    EFERENCE Remote Interface Reference The Model 430 Programmer provides both RS-232 and Ethernet interfaces as standard features. The serial and Ethernet interfaces may be operated simultaneously. Separate output buffers are also provided for the serial and Ethernet return data. However, for optimal performance and simplicity of programming, AMI generally recommends limiting operation to one interface.
  • Page 146 : SCPI C MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND UMMARY System-Related Commands (see page 148 for more information) *IDN? *RST *TST? *LED? < > Ctrl-C PRINT:SERIALnumber? PRINT:PASSword? SETTINGS? SYSTem:LOCal SYSTem:REMote SYSTem:TIME? SYSTem:TIME:SET <date(mm/dd/yyyy) time(hh:mm:ss)> SYSTem:ERRor? Status System Commands (see page 150 for more information) *STB? *SRE <enable_value>...
  • Page 147 : SCPI C MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND UMMARY Supply Setup Configuration Queries (see page 152 for more information) SUPPly:VOLTage:MINimum? SUPPly:VOLTage:MAXimum? SUPPly:CURRent:MINimum? SUPPly:CURRent:MAXimum? SUPPly:TYPE? SUPPly:MODE? Load Setup Configuration Commands and Queries (see page 154 for more information) CONFigure:STABility:MODE {0|1|2} CONFigure:STABility <percent>...
  • Page 148 : SCPI C MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND UMMARY PSwitch:AUTODetect? PSwitch:CURRent? PSwitch:TRANsition? PSwitch:HeatTIME? PSwitch:CoolTIME? PSwitch:PowerSupplyRampRate? PSwitch:CoolingGAIN? Protection Setup Configuration Commands and Queries (see page 157 for more information) CONFigure:CURRent:LIMit <current (A)> CONFigure:QUench:DETect {0|1|2|3} CONFigure:QUench:RATE {1|2|3|4|5} CONFigure:OPLimit:MODE {0|1|2} CONFigure:OPLimit:ICSLOPE <value (A/K)> CONFigure:OPLimit:ICOFFSET <value (A)>...
  • Page 149 : SCPI C MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND UMMARY RAMP:RATE:UNITS? FIELD:UNITS? Lock Configuration Commands (see page 161 for more information) CONFigure:LOCK:PSwitch:CONTRol {0|1} CONFigure:LOCK:TARGet {0|1} CONFigure:LOCK:RAMP-PAUSE {0|1} CONFigure:LOCK:ZEROfield {0|1} CONFigure:LOCK:RAMPrate {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:INDuctance {0|1}...
  • Page 150 : SCPI C MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND UMMARY LOCK:QUench:RESet? LOCK:INCR-DECR? LOCK:FIELD-CURRent? LOCK:FIELD:UNITS? LOCK:STABility? LOCK:INDuctance? LOCK:VOLTage:VS-VM? LOCK:VOLTMeter? LOCK:FINEadjust? LOCK:COILconst? LOCK:CURRent:LIMit? LOCK:CURRent:RATING? LOCK:PSwitch:SETtings? LOCK:QUench:DETect? LOCK:QUench:RATE? LOCK:ABsorber? LOCK:RAMPDown? LOCK:BRIGHTness? LOCK:NETsetup? LOCK:OPLimit? Net Setup Configuration Commands and Queries (see page 167 for more information) CONFigure:IPNAME <system name>...
  • Page 151 : SCPI C MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND UMMARY Measurement Commands and Queries (see page 169 for more information) VOLTage:MAGnet? VOLTage:SUPPly? CURRent:MAGnet? CURRent:SUPPly? FIELD:MAGnet? Ramping State Commands and Queries (see page 170 for more information) RAMP PAUSE INCR DECR ZERO STATE? Switch Heater Commands and Queries...
  • Page 152 : SCPI C MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND UMMARY CONFigure:RAMPDown:RATE:CURRent <segment>,<rate (A/s, A/min)>,<upper bound (A)> CONFigure:RAMPDown:RATE:FIELD <segment>,<rate (kG/s, kG/ min, T/s, T/min)>, <upper bound (Kg, T)> RAMPDown:RATE:SEGments? RAMPDown:RATE:CURRent:<segment>? RAMPDown:RATE:FIELD:<segment>? RAMPDown:COUNT? RAMPDownFile? RAMPDownBackup? Trigger Control and Queries (see page 176 for more information) *ETE <enable_value>...

  • Page 153: Programming Overview

    The Model 430 Programmer also implements a status system for monitoring the state of the Model 430 through the Standard Event and Status Byte registers. SCPI commands conform to a tree structure where commands are SCPI L ANGUAGE grouped according to common keywords.
  • Page 154 VERVIEW value value The Model 430 Programmer Status System An event register latches various events. Events are not buffered, therefore once a bit is set in the event register, further occurrences of that event are ignored. Once a bit is set in an event register, the bit remains set until the register is read (*ESR?) or a *CLS (clear status) command is issued.

  • Page 155: Status Byte Register

    The Status Byte enable register is cleared when: • The command is executed. *SRE 0 • The power is turned off and then back on, and the Model 430 Programmer was configured for (power-on status clear). The enable register set- *PSC 1...

  • Page 156: Standard Event Register

    The Standard Event enable register is cleared when: • The command is executed. *ESE 0 • The power is turned off and then back on, and the Model 430 Programmer was configured for (power-on status clear). The enable register set- *PSC 1...

  • Page 157: Command Handshaking

    ANDSHAKING host computer can overwhelm the command queue by sending commands faster than the Model 430 can execute. If the Model 430 Programmer cannot process a command due to a full command queue, the command is ignored and the -303,”Input overflow” error is reported.
  • Page 158 GPIB interface, which operates outside of the normal command queue. Since a GPIB interface is not available in the Model 430, the *OPC command has limited value (as it would require polling the status...

  • Page 159: Configuration

    The Model 430 Programmer is classified as a DTE (Data Terminal Equipment) device. It uses the standard DB9 male connector and identical pinout used on IBM-compatible computers. The RS-232 connector pinout for the Model 430 Programmer is fully documented on page 204 in the Appendix.

  • Page 160: Ethernet Configuration

    Ethernet transmission. The Model 430 can accept <CR>, <LF>, <CR><LF>, or <LF><CR>, or a semicolon ( ; ) as termination characters from an external computer. The Model 430 accepts connections to ports 23 and 7180. Port 7180 is SSIGNMENTS recommended for general command/query operation.
  • Page 161 MERICAN AGNETICS EMOTE NTERFACE EFERENCE THERNET ONFIGURATION The MSG_DISP_UPDATE:: is the delimiter text indicating the display text follows. The first line of the display is the text up to the next :: delimiter pair, followed by the second line of the display up to the next :: pair.
  • Page 162 MERICAN AGNETICS EMOTE NTERFACE EFERENCE THERNET ONFIGURATION actual byte value that is sent in a broadcast message are shown in the table below: Broadcasted Custom Display Characters Character Byte Value Character Byte Value 0x80 0x86 0x81 0x87 0x82 0x88 0x83 0x89 0x84 0x8A...
  • Page 163 MERICAN AGNETICS EMOTE NTERFACE EFERENCE THERNET ONFIGURATION Broadcasted Keypress and Event Messages (Continued) Message (ASCII format) Meaning 9 key pressed MSG_KEY_9 0 key pressed MSG_KEY_0 . key pressed MSG_KEY_PERIOD +/- key pressed MSG_KEY_PLUSMINUS ESC key pressed MSG_KEY_ESC MENU key pressed MSG_KEY_MENU Right arrow key pressed MSG_KEY_RIGHT...

  • Page 164: Command Reference

    *RST Resets the Model 430 Programmer. This is equivalent to cycling the power to the Model 430 Programmer using the power switch. All non- volatile calibration data and battery-backed memory is restored. Status is cleared according to the *PSC setting.
  • Page 165 PRINT:PASSword? Returns the presently set numerical password. • SETTINGS? Returns a multi-line ASCII text dump of all the Model 430 settings. The output of this query is terminated with two contiguous pairs of <CR><LF> characters (i.e. double terminators). • SYSTem:LOCal Enables all front panel controls.

  • Page 166: Status System Commands

    EFERENCE • SYSTem:ERRor? Queries the error buffer of the Model 430 Programmer. Up to 10 errors are stored in the error buffer. Errors are retrieved in first-in-first-out (FIFO) order. The error buffer is cleared by the *CLS (clear status) command or when the power is cycled. Errors are also cleared as they are read.
  • Page 167 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE information. For example, to enable all categories of error messages to be reported in bit 5 of the Status Byte register, send: *ESE 60. • *ESE? The *ESE? query returns a decimal sum which corresponds to the binary-weighted sum of the bits enabled by the last *ESE command.

  • Page 168: Supply Setup Configuration Queries

    MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE UPPLY ETUP ONFIGURATION UERIES The Supply Setup Configuration Queries provide read-only access to the setup functions available for the Supply Setup submenu (page 73). • SUPPly:TYPE? Returns the index according to the table below for the selected power supply type according to the table below.
  • Page 169 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • 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 170: Load Setup Configuration Commands And Queries

    “0” configures the stability mode as “Auto”, “1” is “Manual”, and “2” is “Test”. If “Auto” mode is selected and an inductance value is not specified (i.e. the inductance entry is zero), the Model 430 will beep once, generate an error, and revert to “Manual” stability mode. Manual mode is the default value.
  • Page 171 If these conditions are not met, the Model 430 will beep once, generate an error, and exit the measurement. Otherwise, this will return a measurement of the magnet inductance in Henries.

  • Page 172: Switch Setup Configuration Commands And Queries

    Executes the auto-detection algorithm (refer to page 84) and returns the appropriate persistent switch heater current in mA. Note that after this value is returned, it can be entered into the Model 430 Programmer using the CONFigure:PSwitch:CURRent command. This remote command blocks communication on all ports until NOTE the auto-detection process completes or is interrupted.

  • Page 173: Protection Setup Configuration Commands And Queries

    MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • PSwitch:HeatTIME? Returns the persistent switch heated time in seconds. • CONFigure:PSwitch:CoolTIME <time (sec)> Sets the time required in seconds for the persistent switch to become superconducting after the persistent switch heater has been deactivated. •...
  • Page 174 Sending “0” disables the automatic quench detection function of the Model 430 Programmer. “1” enables the current-mismatch quench detection function of the Model 430. “2” enables the temperature-limit quench detection function. “3” enables both the current-mismatch and temperature-limit methods of quench detection with either able to trigger a quench.
  • Page 175 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE the mode to “On Entry”. Sending “2” sets the mode to “Cont f(T)”. “0” is the default value. • OPLimit:MODE? Returns “0” indicating the Protection Mode for the Operational Limits submenu is Off. Returns “1” indicating the mode is “On Entry”. Returns “2”...

  • Page 176: Misc Setup Configuration Commands And Queries

    CONFigure:RAMP:RATE:UNITS {0|1} Sets the preferred ramp rate time units. Sending “0” selects seconds. A “1” selects minutes. “0” is the default value. The selected units are applied to both the Model 430 Programmer display and the appropriate remote commands. •...

  • Page 177: Lock Commands And Queries

    CONFigure:FIELD:UNITS {0|1} Sets the preferred field units. Sending “0” selects kilogauss. A “1” selects tesla. “0” is the default value. The selected field units are applied to both the Model 430 Programmer display and the applicable remote commands. • FIELD:UNITS? Returns “0”...
  • Page 178 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • CONFigure:LOCK:ZEROfield {0|1} RAMP TO ZERO Specifies whether use of the key is locked or unlocked. Sending “0” unlocks. A “1” locks. “0” is the default value. • LOCK:ZEROfield? RAMP TO ZERO Returns “0” for use of the key unlocked, or “1”...
  • Page 179 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • CONFigure:LOCK:QUench:RESet {0|1} RESET QUENCH Specifies whether use of the (SHIFT+3) command is locked or unlocked. Sending “0” unlocks. A “1” locks. “0” is the default value. • LOCK:QUench:RESet? RESET QUENCH Returns “0” for use of the (SHIFT+3) command unlocked, or “1”...
  • Page 180 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • LOCK:STABility? Returns “0” for Stability Mode and Stability Setting values unlocked, or “1” for locked. • CONFigure:LOCK:INDuctance {0|1} Specifies whether the Inductance and Sense Inductance? functions are located or unlocked under the Load Setup submenu. Sending “0” unlocks.
  • Page 181 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • 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 182 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • LOCK:QUench:RATE? Returns “0” for use of the quench sensitivity (rate) command unlocked, or “1” for locked. • CONFigure:LOCK:ABsorber {0|1} Specifies whether the Energy Absorber Present picklist value (under the Load submenu) is locked or unlocked. Sending “0” unlocks. A “1” locks. “0”...

  • Page 183: Net Setup Configuration Commands And Queries

    • CONFigure:IPNAME <system name> Sets the system name (also known as host name or computer name), the name by which the Model 430 Programmer is identified on a network. If the system name value is changed, the Model 430 Programmer...
  • Page 184 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • VOLTage:LIMit? Returns the ramping Voltage Limit in volts. • CONFigure:CURRent:TARGet <current (A)> Sets the target setpoint current in amperes. • CURRent:TARGet? Returns the target current setting in amperes. • CONFigure:FIELD:TARGet <field (kG, T)> Sets the target field in units of kilogauss or tesla, per the selected field units.

  • Page 185: Measurement Commands And Queries

    Magnet Station rear connector. • VOLTage:SUPPly? Returns the power supply voltage commanded by the Model 430 Programmer in volts. • CURRent:MAGnet? Returns the current flowing in the magnet in amperes, expressed as a number with a variable number of significant digits past the decimal point (dependent on operating range), such as 5.2320.

  • Page 186: Ramping State Commands And Queries

    • RAMP Places the Model 430 Programmer in automatic ramping mode. The Model 430 will continue to ramp at the configured ramp rate(s) until the target field/current is achieved. • PAUSE Pauses the Model 430 Programmer at the present operating field/ current.

  • Page 187: Switch Heater Command And Query

    OMMAND EFERENCE • ZERO Places the Model 430 Programmer in ZEROING CURRENT mode. Ramping automatically initiates and continues at the ramp rate until the power supply output current is less than 0.1% of I , at which point the AT ZERO status becomes active.

  • Page 188: Quench State Commands And Queries

    • PERSistent? MAGNET IN PERSISTENT MODE Returns the state of the LED on the front panel of the Model 430: “0” if the LED is OFF; “1” if the LED is ON. UENCH TATE OMMANDS AND UERIES The quench commands control and query the quench state of the Model 430 Programmer.

  • Page 189: Rampdown State Commands And Queries

    MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE events reaches 100, the standard quench events file becomes the backup file, and a new (empty) standard quench events file is created. The standard quench events file contains data from the most recent quench events, and the backup file (if it exists) contains data from the 100 quench events preceding the oldest record in the standard quench events file.
  • Page 190 Formats and sends the contents of the standard rampdown file as a formatted ASCII text stream. This allows the user to view the state of both the magnet and Model 430 Programmer during each recorded rampdown event. The output of this query is terminated with two contiguous pairs of <CR><LF>...
  • Page 191 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE RAMPDownFile? RAMPDownBackup? queries can NOTE return thousands of ASCII characters. Ensure your input communicaton buffers are setup to handle a large amount of text.

  • Page 192: Trigger Functions

    EMOTE NTERFACE EFERENCE OMMAND EFERENCE The Model 430 Programmer provides trigger functions which provide a RIGGER UNCTIONS means of collecting operational data with a minimum of commands and directing the output to either or both remote interfaces. ESCRIPTION OF THE...
  • Page 193 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE Since trigger data is output immediately to the serial interface, it NOTE 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 194: Error Messages

    RROR ESSAGES 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.
  • Page 195 At least one of the parameter values received was out of the valid range. Refer to the summary of valid ranges for the Model 430 Programmer settings on page 128. Be sure to note the field units and ramp units settings and check any unit conversions.

  • Page 196: Query Errors

    MERICAN AGNETICS EMOTE NTERFACE EFERENCE RROR ESSAGES • -109,”N/A in present mode” The command or query is not applicable to the present operational mode. For example, in Short Sample Mode the commands or queries associated with operation of the Persistent Switch do not apply. •...

  • Page 197: Device Errors

    430 Programmer to operate a superconducting magnet. • -402,”Serial framing error” The baud rate of the Model 430 Programmer and host device are not identical. The host device must be set to the same baud rate as the Model 430 Programmer (115200).
  • Page 198 NTERFACE EFERENCE RROR ESSAGES 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 199: Service

    The Model 430 Programmer was designed and manufactured to give years of reliable service. The only routine maintenance required is to keep the exterior surfaces of the Model 430 Programmer clean by gently wiping with a damp cloth moistened with a mild detergent.

  • Page 200: Troubleshooting Hints

    430 D ODEL PPEAR TO BE NERGIZED 1. Ensure that the Model 430 Programmer is energized from a power source of proper voltage. If the Model 430 Programmer is found to have been WARNING connected to an incorrect power source, return the instrument to AMI for evaluation to determine the extent of the damage.
  • Page 201 AILURE TO ESSAGE ISPLAYED FTER OWER 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. OWER UPPLY NSTABLE...
  • Page 202 4. If the magnet has no persistent switch installed, or has a small inductance (typically less than 3 H), then adjust the stability setting for the Model 430 Programmer. As this setting is increased, the system should become more stable.
  • Page 203 DVM measurement. If the supply output voltage is approxi- mately zero, the resistance of the power leads (not the Model 430 Program- mer) is dictating the maximum ramp down rate. An energy absorber is necessary to increase the rampdown rate.
  • Page 204 3. For conduction-cooled magnets, ensure the magnet temperature is proper and in accordance with the magnet manufacturer’s specifications. 4. Disable the Model 430 Programmer quench detection feature (see page 124) if you suspect the Model 430 Programmer is falsely indicating a quench condition. ANNOT...
  • Page 205 MERICAN AGNETICS ERVICE ROUBLESHOOTING INTS continuity between the persistent switch heater power supply output pins at the rear panel MAGNET STATION CONNECTORS and the connectors on the magnet support stand top plate. Refer to page 194. YSTEM URRENT AMPS LOWLY FROM 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 206 430 Programmer. If you are using RS-232, make sure the baud rate, number of stop bits, and data bits/parity settings of the host device are matched to those of the Model 430 Programmer (see page 143). If you are using Ether- net communications, check all Model 430 Programmer network settings (see page 104).

  • Page 207: Additional Technical Support

    On power-up, when connecting via Ethernet (Internet Protocol), the Model 430 will display the firmware version screen until an IP address has been obtained. On busy or slow networks, IP address assignment may take several seconds (even as much as a minute or so on very slow networks).
  • Page 208 MERICAN AGNETICS ERVICE ETURN UTHORIZATION...

  • Page 209: Appendix

    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. The Model 430 Programmer can then be used to distribute the signals to the appropriate instruments or data acquisition systems.
  • Page 210 MERICAN AGNETICS PPENDIX AGNET TATION ONNECTORS If the Model 430 Programmer is purchased as part of a magnet system, a Magnet Station Connector instrumentation cable will be provided with the system. Magnet Station Connectors Pin Definitions Function Function LHe Sensor I+ (Red) spare −...

  • Page 211: Lhe Level / Temp Connectors

    : LH MERICAN AGNETICS PPENDIX EVEL ONNECTORS EVEL ONNECTORS LHe Level / Temp Connectors Pin Definitions Function LHe Sensor I+ (Red) Temperature Sensor I+ (Red) − Temperature Sensor V (Yellow) − Temperature Sensor I (Black) Temperature Sensor V+ (Blue) − LHe Sensor V (Yellow) −...

  • Page 212: Programmer Shunt Terminals

    Connectors to external level and/or temperature instruments. If an AMI Liquid Level Instrument is purchased (with LHe measurement option) with the Model 430 Programmer and magnet system, an LHe level cable will be provided. For maximum noise immunity, use shielded cabling and connect NOTE one end of the shield to the LHe Level / Temp Connector shell.

  • Page 213: Current Transducer Connector

    Stability Option or systems with a maximum current greater than 250 A, provides pins for connection of the external current transducer (CT) to the Model 430 Programmer. Power to the CT is also provided via this connector. The connector is a 9-pin D-sub female connector with the shell lugs connected to the Model 430 Programmer chassis ground.

  • Page 214: Program Out Connector

    11 of the Program Out connector is the program out voltage. Pin 4 of the Program Out connector is the output return. All other pins of the Program Out connector are unused. For maximum noise immunity, the Model 430 Programmer NOTE chassis and the chassis of any connected power supply should be tightly electrically coupled.

  • Page 215: Quench I/O Connector

    The Quench I/O connector provides pins for external quench detection input, external rampdown input, quench detection output, and several other Model 430 status output signals (refer to the table below). The Quench I/O connector is a high density 15-pin D-sub male connector.

  • Page 216: External Quench Detection Input

    ONNECTOR The external quench detection input allows the user to facilitate his own XTERNAL UENCH quench detection circuitry, the output of which is wired to the Model 430 ETECTION NPUT Programmer. The external input overrides the internal quench detection function of the Model 430 Programmer and cannot be disabled.

  • Page 217: External Quench Detection Output

    ONNECTOR is in driven mode, the Model 430 Programmer ramps the magnet field/ current to zero. If the magnet is in persistent mode, the Model 430 Programmer ramps the power supply to match the last known persistent magnet current, turns on the persistent switch heater, waits the specified...

  • Page 218: Auxiliary Inputs Connector

    Auxiliary Input 1 is consumed by the magnet voltage input internally connected to the Magnet Station connector (pins 11+ and 12–) for Model 430 units that ship with version 3.00 firmware or later. It is used for the magnet voltage-based switch transition detection logic and is not available for general use.

  • Page 219: Ethernet Connector

    MERICAN AGNETICS PPENDIX THERNET ONNECTOR THERNET ONNECTOR The Ethernet connector provides visual (LED) indications of the status: 1. Steady green when a link is established. 2. Blinking amber for network activity as network packets are received or trans- mitted. Ethernet RJ-45 Connector Pin Definitions Mnemonic Function TXD+...

  • Page 220: Connector

    Data Carrier Detect Receive Data Transmit Data Data Terminal Ready Signal Ground Data Set Ready Request To Send Clear to Send Ring Indicator PC (DB9)-to-Model 430 RS-232 Cable Connections PC (DTE) Model 430 (DTE) DB9 Pin DB9 Pin 1, 6 6, 1...

  • Page 221: Abbreviations And Acronyms Used In This Manual

    MERICAN AGNETICS PPENDIX BBREVIATIONS AND CRONYMS USED IN THIS ANUAL BBREVIATIONS AND CRONYMS USED IN THIS ANUAL Abbreviations and Acronyms Term Meaning AC; ac Alternating Current; strictly, electrical current that periodically reverses direc- tion. Typically used also to describe an electrical power source in terms of the voltage.
  • Page 222 MERICAN AGNETICS PPENDIX BBREVIATIONS AND CRONYMS USED IN THIS ANUAL Abbreviations and Acronyms (Continued) Term Meaning Electrostatic Discharge FIFO First-in / First-out File Transfer Protocol i, I Electrical current flow Ic, I Critical current, the maximum recommended current for at a given supercon- ductor temperature Power supply output current International Electrotechnical Commission...
  • Page 223 Voltage-controls-Voltage; the power supply mode in which the Program Out voltage is in direct ratio to the output voltage of a connected power supply; used by the Model 430 Programmer for superconducting magnet operation. Volt-amperes (V x I); a unit of electrical reactive power Vacuum Fluorescent Display;...

  • Page 224: Remote Computer Communication With The Model 430

    New Connection dia- log. 3. Choose the Serial option and then the Port to which the Model 430 is con- nected. This example illustrates COM20: USB Serial Port (COM20), which in this example is the port assigned by Windows to a USB-to-serial adapter cable.
  • Page 225 Depending on where you install Tera Term, you may need to spec- ify a different Setup directory depending on your account privileges. 7. Type *IDN? followed by Enter to test the connection. The Model 430 Program- mer should respond with “AMERICAN MAGNETICS, INC., MODEL 430,X,Y.Y”...

  • Page 226: Communication Via Ethernet

    Most modern computers will negotiate the direct connection NOTE cross-over automatically with a standard Ethernet cable. 2. Turn on the Model 430 and press ENTER at the “Turn on power supply . . .” prompt. 3. Press MENU to enter the menu system.
  • Page 227 OMMUNICATION WITH THE ODEL 9. Choose the TCP/IP option and then the Host address for the Model 430 that was determined from the previous Step 7. This example illustrates 192.168.1.12. Choose the Service | Other and enter TCP port # 7180. Press 10.The computer will...
  • Page 228 MERICAN AGNETICS PPENDIX EMOTE OMPUTER OMMUNICATION WITH THE ODEL 14.Issue commands or queries as desired. See “Remote Inter- face Reference” on page 129.

  • Page 229: Upgrading The Model 430 Firmware Via Ftp

    1. Install FileZilla or another appropriate FTP Client on the PC that will used for REPARATION the upgrade. 2. The AMI Model 430 can be upgraded through a file server, or similar net- work, or via direct Ethernet connection to the PC: a. Via Network: (1.) Make a new “Upgrade”...

  • Page 230: Upload Procedure Using Filezilla

    Ethernet ports can automatically sense the necessary configuration. 3. Turn on the Model 430 and press ENTER at the “Turn on power supply . . .” prompt. 4. Press MENU to enter the menu system.
  • Page 231 430 F MERICAN AGNETICS PPENDIX PGRADING THE ODEL IRMWARE VIA The result of each of the following steps is depicted in the figure NOTE appearing above or below the action described. The actual screens will vary depending on the files and file structure on the users PC or file server, and whether FileZilla is used as the FTP Client.
  • Page 232 430 F MERICAN AGNETICS PPENDIX PGRADING THE ODEL IRMWARE VIA d. Port: 21 3. Click the Quickconnect button to connect to the Model 430 – the Remote Site section of the screen will populate.
  • Page 233 430 F MERICAN AGNETICS PPENDIX PGRADING THE ODEL IRMWARE VIA 4. On the Local Site (left side representing your PC or server file system), navi- gate to the folder containing the Model430.exe upgrade file (the folder name will be that which was previously given the new “upgrade” folder.).
  • Page 234 430 F MERICAN AGNETICS PPENDIX PGRADING THE ODEL IRMWARE VIA 6. On the Remote Site (right side representing the Model 430 files), select the Upgrade folder. 7. Double-click the Upgrade folder to open it (the folder will be empty).
  • Page 235 9. If an updated manual PDF, Model430Manual.pdf, and updated remote con- trol interface app, MagnetDAQ-setup.msi, are provided with the firmware update, then navigate to the WebServer folder on the Model 430 and replace those files with the new versions. If the WebServer folder does exist on the Model 430, please contact an AMI Technical Support Representative for fur- ther instructions.

  • Page 236: Alternative Upload Procedure Using Windows Ftp

    First, perform steps 2 through 8 as described in the Preparation section on page 213 (omit the FileZilla installation of step 1). To actually perform the FTP upload to the Model 430, do the following steps: 1. Open a Windows Command Line instance and navigate to the folder where you stored the firmware upgrade during the preparation steps.

  • Page 237: Upgrading The Model 430 Firmware Via Flash Card Reader

    OFTWARE EQUIREMENTS 1. The zip file, Model 430 flash card update.zip, is required for this upgrade; the zipped files are to be extracted and copied to the CF card. 2. Host computer on a network to which the Model 430 can be connected by...

  • Page 238: Upgrade Procedure

    – for example, C:\Model 430\Model 430 v1.60 Upgrade: 2. Double-click the zip file to open it – the following or similar screen should appear with the files shown: 12. The Compact Flash card is located at the front right corner of the Model 430 motherboard.
  • Page 239 430 F MERICAN AGNETICS PPENDIX PGRADING THE ODEL IRMWARE VIA LASH EADER 3. Choose File > Extract All… to start the extraction wizard: 4. Click Next until prompted with Select a Destination: 5. Browse to My Computer and choose the top level (root) of the drive associ-...
  • Page 240 CF card from the host computer. 10.Remove the CF card from the card reader. 11.Re-install the CF card in the Model 430 - ensure the card is seated properly. 12.Re-install the cover on the Model 430 using the previously removed screws.
  • Page 241 Model 430 into the address bar. g. The following screen should appear: 14.This completes the installation and verification of the Model 430 Firmware Upgrade. 14. In the form http://xxx.xxx.xxx.xxx, where the "xxx" values match the IP Address (Present) of...

  • Page 242: Magnet-Daq: Model 430 Remote Control

    1. For a host computer on a network, connect a standard Ethernet cable between the Model 430 and the network. 2. For a direct hardwired connection between the Model 430 and a host com- puter, use a “null-modem” or “crossover” Ethernet cable connected from the Model 430 to the host computer.
  • Page 243 Magnet-DAQ application. Updated versions of the Magnet-DAQ may also require updating the Model 430 firmware. The initial screen also includes links to the Model 430 Manual in Adobe PDF form along with the FAQ (Frequently Asked Questions) related to the Mag-...
  • Page 244 ODEL EMOTE ONTROL net-DAQ application (all stored in the Model 430 firmware). There are also links to the AMI website and an e-mail form for contacting AMI Customer Support. 6. Choose the desired Magnet-DAQ version for the appropriate operating sys- tem and follow the installation instructions for each.

  • Page 245: Short-Sample Mode

    AMPLE HORT AMPLE The Model 430 also features the ability to operate as a short-sample controller. Short-sample refers to samples of superconducting wires of relatively short length as compared to lengths required for a wound magnet, typically tested in the presence of various background magnetic field levels.
  • Page 246 0 Volts for the Vss display and remote query. This offset is not saved between power cycles of the Model 430 and may be exer- cised as many times as desired to null out sample voltage offsets.
  • Page 247 MERICAN AGNETICS PPENDIX HORT AMPLE CONFigure:LOCK:PSwitch:CONTRol CONFigure:LOCK:PSwitch:SETtings CONFigure:LOCK:VOLTage:LIMit CONFigure:LOCK:VOLTage:VS-VM CONFigure:LOCK:QUench:RATE CONFigure:LOCK:FIELD-CURRent CONFigure:LOCK:FIELD:UNITS CONFigure:LOCK:COILconst CONFigure:LOCK:ABsorber CONFigure:LOCK:RAMPDown CONFigure:QUench:RATE CONFigure:ABsorber INDuctance? VOLTage:SUPPly? VOLTage:LIMit? VOLTage:MAGnet? CURRent:MAGnet? COILconst? PSwitch? (all subcommands) PERSistent? LOCK:PSwitch:CONTRol? LOCK:PSwitch:SETtings? LOCK:CURRent:RATING? LOCK:VOLTage:LIMit? LOCK:VOLTage:VS-VM? LOCK:QUench:RATE? LOCK:FIELD-CURRent? LOCK:FIELD:UNITS? LOCK:COILconst? LOCK:ABsorber? LOCK:RAMPDown? QUench:RATE? ABsorber? RAMP:RATE:FIELD? FIELD:MAGnet? FIELD:TARGet?
  • Page 248 MERICAN AGNETICS PPENDIX HORT AMPLE...

  • Page 249: Index

    Inde MERICAN AGNETICS NDEX reference locking 161 abbreviations and acronyms protection commands 161 absolute limits quench control 172 ramping commands 167 AMI internet e-mail address ramping states 170 AMI web address status commands 150 switch heater control 171 applicable hardware system commands 148 trigger commands 177 trigger functions 176...
  • Page 250 203 current direction 24 example power 50 Ethernet communication setup 210 magnet specification sheet 108 Model 430 remote control application 226 ramp rate menus 63 data logging ramping functions 121 de-energizing the system RS-232 communication setup 208 setup 108...
  • Page 251 MERICAN AGNETICS NDEX enable external rampdown 94 enable quench detect 89 pswitch cooling gain 88 equation 91 pswitch cooling time 86 how to display value 93 pswitch current 85 offset 93 pswitch current detect 84 slope 93 pswitch heated time 86 pswitch installed 83 inductance, calculate pswitch ramp rate 87...
  • Page 252 99 pause voltmeter lock 101 persistent mode Vs / Vm lock 100 entering 114 Model 430 exiting 117 appears to lock up 191 viewing established magnet current 61 remote control application 226 persistent switch Model 601 Energy Absorber...
  • Page 253 MERICAN AGNETICS NDEX pswitch - see persistent switch segmented ramping see ramping, segmented settings quench detection settings password disabling 89 settings protection enabling 89 setup external in/out 124 indicator 53 example 108 switch failure 125 load submenu 78 misc submenu 95 quench rate supply submenu 73 quench, magnet...
  • Page 254 184 operating voltage 15 oscillation 186 quenches 188 ramps slowly from zero 189 replacing the battery 185 replacing the Model 430 fuse 184 voltage limits 187 voltage selector 185 will not charge 186 will not discharge 187 troubleshooting hints...

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