American Magnetics 05120PS-430-601 Installation, Operation And Maintenance Instructions

Bipolar power supply systems

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EXCELLENCE IN MAGNETICS AND CRYOGENICS

BIPOLAR POWER SUPPLY

SYSTEMS

MODELS 05120PS-430-601, 05240PS-430-601,

05360PS-430-601, 05600PS-430-601 &

03300PS-430-601

INCLUDING HIGH-STABILITY OPTION

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. 10, August 2021

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Page 1 EXCELLENCE IN MAGNETICS AND CRYOGENICS BIPOLAR POWER SUPPLY SYSTEMS MODELS 05120PS-430-601, 05240PS-430-601, 05360PS-430-601, 05600PS-430-601 & 03300PS-430-601 INCLUDING HIGH-STABILITY OPTION 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...
Page 3: Table Of Contents
Model 05120PS-430-601 Power Supply System ........
Page 4 MERICAN AGNETICS ABLE OF ONTENTS Model 601 Energy Absorber Front Panel Layout ......14 Bipolar System Specifications .
Page 5 MERICAN AGNETICS ABLE OF ONTENTS Using the Fine Adjust Knob ..........52 Selecting Picklist Values .
Page 6 MERICAN AGNETICS ABLE OF ONTENTS Ramping Functions ........... . 110 Ramping States and Controls .
Page 7 MERICAN AGNETICS ABLE OF ONTENTS Telnet Port 23 Broadcast Function ..........144 Command Reference .
Page 8 MERICAN AGNETICS ABLE OF ONTENTS Additional Technical Support..........205 Return Authorization.
Page 9: Foreword
OREWORD Foreword URPOSE AND COPE This manual contains the operation and maintenance instructions for the American Magnetics, Inc. Bipolar Power Supply Systems with optional high-stability via a zero flux current sensing system. The user is encouraged contact authorized AMI Technical...
Page 10: Applicable Hardware
MERICAN AGNETICS OREWORD PPLICABLE ARDWARE Ethernet interfaces. A quick-reference summary of commands is provided as well as a detailed description of each. Service provides guidelines to assist the user in troubleshooting possible system and Model 430 Programmer malfunctions. Information for contacting AMI Technical Support personnel is also provided. Appendix provides additional details and/or procedures in the following areas: •...
Page 11: General Precautions
MERICAN AGNETICS OREWORD ENERAL RECAUTIONS Kepco BOP 20-20M 4-quadrant linear power supply (±20 V @ ±20 A) Accel Instruments TS250-8 4-quadrant power supply ((±7 V @ ±5 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
MERICAN AGNETICS OREWORD AFETY UMMARY WARNING: Medical implants, such as aneurysm clips, surgical clips or prostheses may contain ferromagnetic materials and therefore would be subject to strong forces near a magnet. THIS COULD RESULT IN INURY OR DEATH. In the vicinity of rapidly changing field (e.g. pulsed gradient fields), eddy currents may be induced in the implant resulting in heat generation.
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
OWER UPPLY YSTEM EATURES The AMI Model 05120PS-430-601, 05240PS-430-601, 05360PS-430- 601, 05600PS-430-601, and 03300PS-430-601 Power Supply Systems allow an operator to manage a superconducting magnet system with unprecedented accuracy and ease of use. Integral components of the system include a Model 430 Programmer...
Page 18: High-Stability Option
MERICAN AGNETICS NTRODUCTION NTEGRATED IPOLAR OWER UPPLY YSTEM EATURES For greater stability and accuracy, the Model 430 Programmer can be TABILITY configured with a zero-flux precision current measuring device instead of PTION the standard resistive shunt. This option typically increases the system stability and accuracy by an order of magnitude.
Page 19: Condition-Based Magnet Auto-Rampdown
However, when the power supply is used in conjunction with the AMI Model 601 Energy Absorber, the result is the bipolar Model 05120PS-430-601 integrated power supply system that is ideal for 1. The power supply is operating as a source if the current direction and voltage polarity are the same (e.g.
Page 20 MERICAN AGNETICS NTRODUCTION IPOLAR YSTEMS ENERAL ESCRIPTION driving inductive loads such as large magnets or motors. The Model 601 Energy Absorber provides a -5 VDC discharge capacity. The power supply is controlled by a 0-10 VDC remote analog signal supplied by the Model 430 Programmer and applied to the power supply analog input.
Page 21 The system consists of a Model 430 Programmer, a 08150PS power supply configured for 0-10 VDC and 0-120 A output, and a Model 601 Energy Absorber as illustrated below. The system provides ±5 VDC to the load at up to 120 A maximum current. Typical Model 05120PS-430-601 System Rack Layout...
Page 22 MERICAN AGNETICS NTRODUCTION IPOLAR YSTEMS ENERAL ESCRIPTION 05240PS-430-601 P ODEL OWER UPPLY YSTEM The system consists of a Model 430 Programmer, two 08150PS power supplies configured for 0-10 VDC and 0-120 A output, and two Model 601 Energy Absorbers as illustrated below. The system provides ±5 VDC to the load at up to 240 A maximum current.
Page 23 MERICAN AGNETICS NTRODUCTION IPOLAR YSTEMS ENERAL ESCRIPTION 05360PS-430-601 P ODEL OWER UPPLY YSTEM The system consists of a Model 430 Programmer, three 08150PS power supplies configured for 0-10 VDC and 0-120 A output, and three Model 601 Energy Absorbers as illustrated below. The system provides ±5 VDC to the load at up to 360 A maximum current.
Page 24 MERICAN AGNETICS NTRODUCTION IPOLAR YSTEMS ENERAL ESCRIPTION 05600PS-430-601 P ODEL OWER UPPLY YSTEM The system consists of a Model 430 Programmer, five 08150PS power supplies configured for 0-10 VDC and 0-120 A output, and five Model 601 Energy Absorbers as illustrated below. The system provides ±5 VDC to the load at up to 600 A maximum current.
Page 25 MERICAN AGNETICS NTRODUCTION IPOLAR YSTEMS ENERAL ESCRIPTION 03300PS-430-601 P ODEL OWER UPPLY YSTEM The system consists of a Model 430 Programmer, two 08150PS power supplies configured for 0-8 VDC and 0-150 A output, and two Model 601 Energy Absorbers as illustrated below. The system provides -5 VDC to +3 VDC to the load at up to 300 A maximum current.
Page 26 RAMP VOLTAGE RESET American Magnetics, Inc. RATE LIMIT QUENCH SHIFT Model 430 Power Supply Programmer INCR. FIELD <> DECR. FIELD CURRENT FIELD MENU P. SWITCH FIELD STAB. HTR. CUR. UNITS FIELD AT TARGET PERSIST. TARGET RAMP MAGNET IN PERSISTENT MODE...
Page 27 125 A 250 A 1 Current Shunt Terminals 6 Aux Inputs 15-pin Female HD D-sub Connector 2 Ethernet RJ-45 Connector 7 Dual Auxiliary LHe Level/Temp 9-pin Male D-sub Connectors 3 RS-232 9-pin Female D-sub Connector 8 Dual Magnet Station 25-pin Female D-sub Connectors (Male for legacy devices) 4 Quench I/O 15-pin Male HD D-sub Connector 9 Input Power IEC 60320 C14 Male Connector...
Page 28 1 Current Transducer 9-pin Female D-sub Connector 6 Aux Inputs 15-pin Female HD D-sub Connector 2 Ethernet RJ-45 Connector 7 Dual Auxiliary LHe Level/Temp 9-pin Male D-sub Connectors 3 RS-232 9-pin Female D-sub Connector 8 Dual Magnet Station 25-pin Female D-sub Connectors (Male for legacy devices) 4 Quench I/O 15-pin Male HD D-sub Connector 9 Input Power IEC 60320 C14 Male Connector...
Page 29 MERICAN AGNETICS NTRODUCTION OWER UPPLY RONT ANEL AYOUT OWER UPPLY RONT ANEL AYOUT The Bipolar Power Supply System individual power supply front panels contain the input ON/OFF circuit breakers and the OUTPUT indicator. The remaining front panel controls are not used in the Bipolar Power Supply System configuration because the system output is controlled by the Model 430 Programmer.
Page 30: Model 601 Energy Absorber Front Panel Layout
601 E MERICAN AGNETICS NTRODUCTION ODEL NERGY BSORBER RONT ANEL AYOUT 601 E ODEL NERGY BSORBER RONT ANEL AYOUT Model 601 Front Panel Layout The Fault LED is the only indicator 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 31: Bipolar System Specifications
MERICAN AGNETICS NTRODUCTION IPOLAR YSTEM PECIFICATIONS IPOLAR YSTEM PECIFICATIONS Shunt-based (w/ optional High-Stability) Bipolar Power Supply System Specifications 05120PS-430 05240PS-430 Magnet Current Control Range:  to +120 A  to +240 A Programming Accuracy: 62.5 mA 125 mA Programming Accuracy w/ High-Stability Option: 6.25 mA 12.5 mA Stability (w/ internal shunt):...
Page 32 MERICAN AGNETICS NTRODUCTION IPOLAR YSTEM PECIFICATIONS High-Current (High-Stability Option required) Bipolar Power Supply System Specifications 05360PS-430 05600PS-430 03300PS-430 Magnet Current Control Range:  to +360 A  to +600 A  to +300 A Programming Accuracy: 18 mA 30 mA 15 mA Stability: 3.6 mA after 10 min.
Page 33: Model 430 Specifications @ 25 °C
430 S @ 25 °C MERICAN AGNETICS NTRODUCTION ODEL PECIFICATIONS 430 S @ 25 °C ODEL PECIFICATIONS Magnet Current Control Parameters Standard Model 430 Factory Configurations: Programmable Limits 5 A 10 A 100 A 125 A 250 A 300 A +600 A Measurement Resolution (A): 0.625...
Page 34 430 S @ 25 °C MERICAN AGNETICS NTRODUCTION ODEL PECIFICATIONS Persistent Switch Heater Output Programmable Limits: 0.0 to 125 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% Input Resistance:...
Page 35: Operating Characteristics
MERICAN AGNETICS NTRODUCTION PERATING 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.
Page 36: Dual-Quadrant Operation
MERICAN AGNETICS NTRODUCTION PERATING HARACTERISTICS single direction. This corresponds to operating in quadrant . The electrical energy can be stored as magnetic energy as fast as the magnet and power supply voltage will allow. In order to reduce the magnetic field, the magnetic energy is converted to electrical energy and then to thermal energy in the resistive elements of the system.
Page 37: Four-Quadrant Operation
MERICAN AGNETICS NTRODUCTION PERATING HARACTERISTICS The disadvantage to this type of system is that energy is being dissipated in the energy absorbing element whenever current is flowing. This loss is sometimes a significant portion of the power required to operate the system. It also does not provide for field polarity reversal. The Four-Quadrant Magnet Power Supply System illustrated in the UADRANT figure below offers the most control of all the modes of operation.
Page 38 MERICAN AGNETICS NTRODUCTION PERATING HARACTERISTICS...
Page 39: Installation
MERICAN AGNETICS NSTALLATION Installation Before energizing the equipment, the earth ground of the WARNING 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 40: Inspecting And Unpacking
MERICAN AGNETICS NSTALLATION NSPECTING AND NPACKING NSPECTING AND NPACKING Carefully remove equipment, interconnecting cabling, documentation CD (and/or printed material) from the shipping carton, and remove all packaging material. If there is any shipping damage, save all packing material and NOTE contact the shipping representative to file a damage claim.
Page 41: Changing The Model 430 Programmer Operating Voltage
MERICAN AGNETICS NSTALLATION OLLECTING ECESSARY NFORMATION Ensure the front panel power switches are in the (OFF) position. Verify that the Model 430 Programmer and power supply component(s) are configured for the proper operating voltage by referring to the label adjacent to the power entry connector on the equipment rear panels. If the operating voltage is correct, plug the line cords into the power entry connectors, and then into the appropriate facility power receptacles.
Page 42: System Interconnects
MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS YSTEM NTERCONNECTS If the Model 430 Programmer was purchased as part of a magnet system, all applicable system components and wiring harnesses will have been shipped with the system. Multiple power supplies should be connected to the same AC input power source.
Page 43: Shunt-Based Bipolar Power Supply System
OWER UPPLY YSTEM This section illustrates the interconnections for the 05120PS-430-601 (page 29) and 05240PS-430-601 (page 30) power supply systems. Both systems may be optionally fitted with the High-Stability Option with zero- flux current transducer, although that optional configuration is not illustrated herein.
Page 44 MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS Typical Model 05240PS-430-601 System Rack Interconnections Referring to the diagram on page 29 for the 05120PS system, or page 30 for the 05240PS system,, ensure the cabling is connected in the following manner: The use of locking hardware is recommended for all high-current NOTE connections.
Page 45 AMERICAN MAGNETICS, INC. OAK RIDG E, TN, USA 100-240Vac 50-60 Hz 200 VA AUX I/O VALVE CONTROL ETHERNET RS-232 Model 05120PS-430-601 Bipolar System Interconnections...
Page 46 AMERICAN MAGNETICS, INC. OAK RIDG E, TN, USA 100-240Vac 50-60 Hz 200 VA AUX I/O RS-232 VALVE CONTROL ETHERNET Model 05240PS-430-601 Bipolar System Interconnections...
Page 47 MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS Ensure the protective diode is installed across the output WARNING terminals of the power supply with the anode at the negative (–) terminal and the cathode at the positive (+) terminal. Removal or omission of this protective diode may cause serious injury to personnel and damage to the power supply under loss of AC power conditions.
Page 48 MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS k. Install an instrumentation cable between the magnet support stand and one of the MAGNET STATION top plate connector connectors on the rear of the Model 430 Programmer. l. Optional: Install an instrumentation cable between one of the LHe LEVEL / TEMP connectors on the rear of the Model 430 Programmer and the Model 1700 Liquid Level Instrument LHe...
Page 49: High-Current, High-Stability Bipolar Power Supply System
MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS URRENT TABILITY IPOLAR OWER UPPLY YSTEM This section illustrates the interconnections for the 05360PS-430-601 (page 34), 05600PS-430-601 (page 35), 03300PS-430-601 (page 36) power supply systems. A shunt-based current measurement in the Model 430 is not available at greater than 250 A maximum current. An external zero flux current transducer is required.
Page 50 MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS Typical Model 05360PS-430-601 System Rack Interconnections...
Page 51 MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS Typical Model 05600PS-430-601 System Rack Interconnections...
Page 52 MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS Typical Model 03300PS-430-601 System Rack Interconnections...
Page 53 AMERICAN MAGNETICS, INC. OAK RIDG E, TN, USA 100-240Vac 50-60 Hz 200 VA AUX I/O VALVE CONTROL ETHERNET RS-232 High-Current, High-Stability Bipolar System Interconnections...
Page 54 MERICAN AGNETICS NSTALLATION YSTEM NTERCONNECTS When routing the magnet cable (+) from Model 601 negative (-) NOTE bus through the current transducer (CT), the current-direction arrow on the CT must point toward the magnet.  e. Connect the negative ( ) bus of the Model 601 Energy Absorber(s) and route it through the CT (see note).
Page 55: Special Configurations
MERICAN AGNETICS NSTALLATION PECIAL ONFIGURATIONS o. 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. PECIAL ONFIGURATIONS The Model 430 Programmer has been designed for optimal operation with a superconducting magnet (i.e.
Page 56: Short-Circuit Or Resistive Load
MERICAN AGNETICS NSTALLATION PECIAL ONFIGURATIONS 1. Place a 20 Ohm resis- tor, rated for 1W or higher, across the mag- net current leads at the top of the cryostat as shown in the figure at right. 2. Ensure the Model 430 is configured for no per- sistent switch installed (see page 82).
Page 57: Power-Up And Test Procedure
MERICAN AGNETICS NSTALLATION OWER P AND ROCEDURE 430 Programmer will require an “integration time” to overcome the 5 VDC bias. Once the bias is achieved, the series resistance is minimal, the Model 601 appears as a short-circuit, and test ramping will proceed. It is not possible to avoid this integration time.
Page 58 MERICAN AGNETICS NSTALLATION OWER P AND ROCEDURE If energy absorbers are in use, ensure all the power adapters are NOTE properly connected to the energy absorbers and their respective AC power receptacles. 4. When prompted by the Model 430 Programmer, energize the power sup- ply(s), allow an appropriate amount of time for the supply(s) to start (some produce an audible “click”...
Page 59 MERICAN AGNETICS NSTALLATION OWER P AND ROCEDURE There may be a discrepancy between the current shown on the NOTE power supply display and the current displayed on the 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.
Page 60 MERICAN AGNETICS NSTALLATION OWER P AND ROCEDURE...
Page 61: Operation
MERICAN AGNETICS PERATION 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. In some of the examples and figures that follow, the ±...
Page 62: Energizing The Power Supply And Components
MERICAN AGNETICS PERATION YSTEM OWER EQUENCE After this screen is displayed, the power supply can be powered up (See “Energizing the Power Supply and Components” on page 46.) followed by pressing the key on the Model 430 Programmer. This brings ENTER up the default display.
Page 63: Model 430 Programmer Default Display
430 P MERICAN AGNETICS PERATION ODEL ROGRAMMER EFAULT ISPLAY NERGIZING THE OWER UPPLY The master unit must be turned on between 2 to 5 seconds CAUTION before the slave, otherwise the units will fault and the power-up sequence will have to be repeated. Place the power supply switches in the I (ON) position in sequence (see Caution above).
Page 64: Field / Current Display
430 P MERICAN AGNETICS PERATION ODEL ROGRAMMER EFAULT ISPLAY display areas — the Field / Current Display area, the Voltage Display area, the Status Indicator area and the Main Display area. Default display showing ramping mode and persistent switch heater status: Field / Current +50.00 A —...
Page 65: Voltage Display
430 P MERICAN AGNETICS PERATION ODEL ROGRAMMER EFAULT ISPLAY The voltage display indicates either the voltage across the magnet (V OLTAGE ISPLAY or the power supply output voltage (V ). This is always displayed in the lower left corner of the display (see the figure on page 48), regardless of what else is being displayed on the Model 430 Programmer display.
Page 66: Main Display
430 P MERICAN AGNETICS PERATION ODEL ROGRAMMER EFAULT ISPLAY See page 110 for a more detailed discussion of the meaning of the ramping modes (Paused, Ramping Up, Ramping Down and Holding). The default main display (the rightmost portion of the display – see the ISPLAY figure on page 48) shows either a voltmeter indicating magnet voltage or ramp mode and persistent switch heater state.
Page 67: Entering Numeric Values
MERICAN AGNETICS PERATION NTERING UMERIC ALUES NTERING UMERIC ALUES RAMP VOLTAGE RESET RATE LIMIT QUENCH SHIFT DECR. INCR. FIELD <> FIELD FIELD CURRENT MENU FIELD P. SWITCH STAB. HTR. CUR. UNITS ENTER RAMP FINE VOLT Vs <> Vm ADJUST METER ZERO Numeric Keypad and Associated Keys A consistent method of entering values is used within menus requiring...
Page 68: Using The Fine Adjust Knob
MERICAN 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 69 MERICAN AGNETICS PERATION SING THE DJUST When the fine adjust knob is live, adjustments made using it take place immediately. This can be a useful and powerful functionality. Any numeric value can be incrementally adjusted using the fine adjust knob, and its affect on the system can be observed as the adjustment is being made.
Page 70: Selecting Picklist Values
MERICAN AGNETICS PERATION ELECTING ICKLIST ALUES ELECTING ICKLIST ALUES MENU ENTER Menu Navigation Keys Some submenu items require the user to select a value from a list of predefined values (picklist values). Such menus will display an item selector ( ) which points to the picklist value currently selected. To change the value to another value in the picklist, first press the ENTER key;...
Page 71: Single-Key Commands / Menus
MERICAN AGNETICS PERATION INGLE OMMANDS ENUS If the key is pressed while picklist entry is active, the setting will revert to the previous value and picklist entry will be made inactive. Note that if the key is pressed when numeric entry is not active, the current submenu will be exited and the next higher level submenu will be restored (if it exists).
Page 72 MERICAN AGNETICS PERATION INGLE OMMANDS ENUS SHIFT RESSING THE KEY TO VOID UTOMATIC AMPING Pressing followed by the SHIFT PERSIST. SWITCH CONTROL key only toggles the Model 430 Programmer persistent switch heater between energized (turned on) and de-energized (turned off). If the persistent switch heater is energized and this key is pressed, the persistent switch heater is de-energized.
Page 73 MERICAN AGNETICS PERATION INGLE OMMANDS ENUS adequate for the majority of persistent switches. If the magnet appears unstable just after the switch heating period expires, increase the switch heated time to allow for complete heating. The cooled time allows the persistent switch sufficient time to be cooled to superconducting state before the current is changed in the magnet.
Page 74: Target Field Setpoint Key
MERICAN AGNETICS PERATION INGLE OMMANDS ENUS drift during persistent switch cooling, especially with conduction cooled switches. Increasing the cooling gain adds control loop gain during the switch cooling cycle. Too little may result in magnet drift during switch cooling. Too much may result in power supply instability during switch cooling, which could potentially prevent the switch from cooling.
Page 75: Ramp / Pause Key
: SHIFT+ MERICAN AGNETICS PERATION OMMANDS ENUS Pressing the key toggles the Model 430 Programmer RAMP / PAUSE AUSE between the ramping mode and the paused mode. If the RAMP / PAUSE key is pressed while the Model 430 is ramping, the ramping is paused. If key is pressed while the Model 430 is paused, the RAMP / PAUSE Model 430 continues ramping.
Page 76: Ramp Rate (Shift+1)
: SHIFT+ MERICAN AGNETICS PERATION OMMANDS ENUS RAMP VOLTAGE RESET RATE LIMIT QUENCH SHIFT DECR. INCR. FIELD <> FIELD FIELD CURRENT P. SWITCH FIELD STAB. HTR. CUR. UNITS FINE VOLT Vs <> Vm ADJUST METER SHIFT+Key Functions or “ ”). The SHIFT+key command / menu for each key of the numeric keypad is shown in light blue text at the top of each key.
Page 77 : SHIFT+ MERICAN AGNETICS PERATION OMMANDS ENUS XAMPLE An example (using a magnet with rated current of 60 A ) will illustrate the use of the ramp rate menus. The example assumes that the field/current units have been set to amperes and the ramp segments value has been set to three (3) segments.
Page 78 : SHIFT+ MERICAN AGNETICS PERATION OMMANDS ENUS Pressing the right arrow key accesses the next (second) segment ramp-rate display. The segment #2 ramp rate is set to a value of 0.1 A/sec. +50.00 A Seg.2 Ramp Rate (A/sec) +0.50 Vs ±0.1000 The right arrow key is pressed once to access the segment #2 range display.
Page 79: Voltage Limit (Shift+2)
: SHIFT+ MERICAN AGNETICS PERATION OMMANDS ENUS been committed with the key, the adjusted value will be ENTER discarded. The display will update to show the new segment ramp rate, and the fine adjust knob will apply to the new segment (assuming the key is pressed before the segment has ENTER...
Page 80: Reset Quench (Shift+3)
: SHIFT+ MERICAN AGNETICS PERATION OMMANDS ENUS absorber if in use (see page 110 for details of how to determine the appropriate Voltage Limit). +50.00 A Voltage Limit (V) +0.50 Vs ±2.000 The Voltage Limit may be set less than or equal to the maximum output voltage of the power supply.
Page 81: Field <> Current (Shift+5)
: SHIFT+ MERICAN AGNETICS PERATION OMMANDS ENUS key may be pressed to pause manual ramping. Manual RAMP / PAUSE ramping will continue until paused or the Current Limit is achieved. <> C SHIFT+5) key is used to toggle between the FIELD <>...
Page 82: Persistent Switch Heater Current (Shift+8)
: SHIFT+ MERICAN AGNETICS PERATION OMMANDS ENUS Use of the (SHIFT+8) key provides a shortcut to P. SWITCH HTR. CUR. ERSISTENT WITCH the menu for setting persistent switch heater current. The value can be EATER URRENT set to between 0.0 and 125.0 mA. The default value is 10.0 mA unless HIFT preset by AMI to match a specific superconducting magnet.
Page 83: Led Indicators
: LED I MERICAN AGNETICS PERATION NDICATORS OWER NDICATOR LED I NDICATORS The Model 430 Programmer has six front panel LED indicators. See the front panel illustration and table on page 10 for the location of these indicators. The green power-on LED indicates that the Model 430 Programmer is OWER NDICATOR powered on.
Page 84: Shift Indicator
: LED I MERICAN AGNETICS PERATION NDICATORS HIFT NDICATOR If the Model 430 Programmer power supply system is CAUTION powered off and moved from one magnet system to another, the LED may MAGNET IN PERSISTENT MODE not correctly indicate the state of the magnet system until the first time the persistent switch heater is turned off.
Page 85: Setup Menu
MERICAN AGNETICS 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 ETUP...
Page 86: 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 (see page 69 for details of menu navigation), the user will be ENTER able to edit parameters under that submenu. The Setup menu structure in summarized in the figure below: SETUP MENU SUBMENUS...
Page 87 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UPPLY UBMENU 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 the table on page 72. 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...
Page 88 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UPPLY UBMENU 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 +150.000 0 to +10.000...
Page 89 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UPPLY UBMENU The current must be less than 0.1% of I in order to change the NOTE Select Supply picklist value. If a change is attempted with current above this value, the Model 430 Programmer will beep and ignore the keypress.
Page 90 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UPPLY UBMENU Output Current, Max Output Current and V-V Mode Input Range) are entered. Entry of each of these parameters is described below. UTPUT OLTAGE 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...
Page 91 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UPPLY UBMENU UTPUT URRENT 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 +100,000 A , and can be set by using either the numeric keypad as described on page 51 or the fine adjust knob (on page 52).
Page 92: Load Submenu
MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UBMENU When the Load submenu is selected, several parameters associated UBMENU with the superconducting magnet load can be viewed and/or changed. TABILITY 0.00 A — Stability Mode +0.50 Vs Auto Manual Test The stability mode provides configuration of the loop control gain for operating with a magnet or testing a system on a short-circuit load.
Page 93 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UBMENU TABILITY ETTING 0.00 A — Stability Setting (%) +0.50 Vs The stability setting is specified in percent and controls the transient response and stability of the system. The value can be set by using either the numeric keypad as described on page 51 or the fine adjust knob (on page 52).
Page 94 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UBMENU TABILITY ETTING FOR AGNETS WITH A ERSISTENT WITCH The graph below may be used as a guide to set the stability setting for magnets with a persistent switch installed and inductance of less than 3 henries. Magnets with an inductance of greater than 3 henries that have a persistent switch installed should operate with a stability setting of 0.0%.
Page 95 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UBMENU changes for various stability setting ranges are shown in the following table. Maximum Recommended Stability Setting Changes Maximum Recommended Stability Setting Range Stability Setting Change 98% to 100% 0.1% 94% to 98% 0.2% 84% to 94% 0.5% 44% to 84%...
Page 96 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UBMENU FFSET 0.00 A — Zero Offset Null (Cleared) 0.00 Vs ENTER to set, 0 to Clear This menu requires legacy firmware version 2.64 or later, or firmware version 3.14 or later for newer units, and is only displayed if the Model 430 is configured for the “high-stability”...
Page 97 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UBMENU 6. Turn on the connected power supply and press ENTER to continue normal operation with the new Zero Offset Null value applied. The Zero Offset Null value is retained by the Model 430 between power cycles.
Page 98: Switch Submenu
MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS WITCH UBMENU a new value or initial guess (an initial guess within ~25% is adequate). 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 76).
Page 99 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS WITCH UBMENU If YES is selected, the PSwitch Current Detect, PSwitch Current, PSwitch Transition, PSwitch Heated Time, PSwitch Cooled Time, PSw P/S Ramp Rate, and PSwitch Cooling Gain settings are made available within the Switch submenu. If NO is selected, the various settings are not made available within the Switch submenu and the PERSIST.
Page 100 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS WITCH UBMENU 4. The current that was present when the superconducting to resistive transition occurred is displayed. 0.00 A PSwitch Current Detect(mA) 0.00 Vm 27.2 If the PSwitch Current determined by this method is accepted as NOTE described below, the detection process will exit to the heated switch mode in the PAUSED state.
Page 101 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS WITCH UBMENU requiring much less time to sense the transition of the persistent switch from the heated to cooled state. In order to use the magnet voltage switch transition detection, NOTE higher resolution of the magnet voltage measurement is necessary.
Page 102 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS WITCH UBMENU higher control gain required for proper magnet operation before the magnet is actually available in the circuit (not being shunted by the persistent switch). If magnet operation is not stable after expiration of the heating period, increase the heated time to allow more time for the switch to heat.
Page 103 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS WITCH UBMENU The purpose of this parameter is to reduce the amount of time the system requires to either match an existing persistent magnet current, or to reach zero current for powering off a system with the magnet in a persistent state.
Page 104: Protection Submenu
MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS ROTECTION UBMENU The Protection submenu configures parameters related to ROTECTION UBMENU protective measures that can be applied to magnet operation to prevent accidental damage and respond during a quench or other critical events. URRENT IMIT 0.00 A Current Limit (A)
Page 105 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS ROTECTION UBMENU ± CURRENT LIMIT (A) OPERATING RANGE as LIMITED by CURRENT LIMIT -200 +200 ±2.5 ± VOLTAGE LIMIT (V) AMI 4Q06125PS AVAILABLE RANGE Current and Voltage Limits set within the Supply Ranges NABLE UENCH ETECT +50.00 A...
Page 106 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS ROTECTION UBMENU DDITIONAL UENCH ETECTION ELECTIONS If the optional Operational Limits f(T) functionality is enabled (see page 91), then the quench detection menu includes some additional selections as illustrated below: +50.00 A — Enable Quench Detect? +0.50 Vs Current Tmax...
Page 107 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS ROTECTION UBMENU 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 216).
Page 108 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS ROTECTION UBMENU Ic vs. Temperature 200.00 180.00 160.00 140.00 120.00 100.00 80.00 60.00 40.00 20.00 0.00 0.00 1.00 2.00 3.00 4.00 5.00 6.00 7.00 8.00 9.00 10.00 Temperature (K) Example of Ic (i.e. critical current) vs. Temperature protection line an error, and deny the new entry to the Target Field/Current Setpoint if the value exceeds Ic.
Page 109 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS ROTECTION UBMENU indicating a temperature-limited condition (i.e. the reverse-video T character): +50.53 A Mode: Ramping: Ic=50.5 4.50 K No PSwitch Installed Illustration of optional default display showing the value of c, the present Aux-In 3 temperature, and a temperature-limited condition.
Page 110 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS ROTECTION UBMENU 3: T S CALE +50.00 A — Aux-In 3: T Scale (K/V) 4.50 K +1.000 This value controls the scaling of the voltage measured via the Auxiliary Input channel 3 (see page 216). The measured voltage is multipled by this scale factor in Kelvin/Volts.
Page 111: Misc Submenu
MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UBMENU magnet rampdown, even if the magnet is in persistent mode. See page 214. The external rampdown function may be enabled or disabled according to the preference of the user. The default value is NO. With the exception of enable control, the ramp settings for the external rampdown function can be edited only via the remote interface (see page 175) or by using Magnet-DAQ (see...
Page 112 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UBMENU NITS +50.00 A — Ramp Rate Time Units +0.50 Vs Seconds Minutes This picklist value specifies the unit of time used to enter and the display ramp rate. If Seconds is selected, ramp rate is entered in A/s, kG/s or T/s;...
Page 113 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UBMENU for instance, only the 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.
Page 114 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UBMENU ARGET IELD ETPT +50.00 A — Target Field Setpt Lock +0.50 Vs Locked Unlocked This picklist value specifies whether use of the TARGET FIELD key is locked or unlocked. The default value is SETPOINT 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 locked or unlocked (whether accessed through the FIELD key menu or under the Misc submenu). The default value UNITS is Unlocked.
Page 117 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS UBMENU ETER +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. 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
MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS ETTINGS UBMENU Using the keypad, type the current 4-digit (maximum) numeric password and press . The default password is 1234. If an ENTER incorrect password is entered, the Model 430 Programmer beeps and again prompts for the password. Once the password has been correctly entered, the user is prompted for the new password.
Page 121 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS YSTEM RESENT +50.00 A — System Name (Present) +0.50 Vs This submenu item displays the currently assigned system name (also known as host name or computer name), the name by which the Model 430 Programmer is identified on a network. This setting can only be modified using remote communications (either Ethernet or RS-232);...
Page 122: Net Setup Submenu
MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS ATEWAY DDRESS RESENT +50.00 A — Gateway Address (Present) +0.50 Vs 0.0.0.0 (DHCP) This submenu item displays the currently assigned gateway IP address for the Model 430 Programmer. The value in parentheses after the gateway IP address value indicates how the gateway IP address is assigned.
Page 123 MERICAN AGNETICS PERATION ETUP UBMENU ESCRIPTIONS 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
The figure at left shows an exam- ple magnet specifications sheet. American Magnetics, Inc. Several parameters needed to P.O. Box 2509, 112 Flint Road, Oak Ridge, TN 37831-2509 Phone: (865) 482-1056 Fax: (865) 482-5472 operate the magnet are specified.
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 PSwitch Installed PSwitch Current (mA) 41.0...
Page 126: Ramping Functions
MERICAN AGNETICS PERATION AMPING UNCTIONS AMPING UNCTIONS 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). The basic charging equation for a superconducting magnet is: --- - where V is the charging voltage (V), L is the magnet inductance (H), and...
Page 127: Manual Ramping
MERICAN AGNETICS PERATION AMPING UNCTIONS either the SHIFT+keys for manual INCR. FIELD DECR. FIELD control of ramping up or ramping down, respectively. Ramp modes and descriptions. Mode Description Ramping Automatic ramping to the target field/current is in progress. Holding The target field/current has been achieved and is being maintained. Ramping is suspended at the field/current achieved at the time the Paused PAUSED mode was entered.
Page 128: Ramping To Zero
MERICAN AGNETICS PERATION AMPING UNCTIONS ramping is not PAUSED, ramping to the target field/current begins immediately. If ramping is PAUSED, ramping to the target field/current will begin when the key is pressed to take the Model RAMP / PAUSE 430 Programmer out of PAUSED mode. The ramp rate will be controlled by the preset ramp rate variables as described in on page 60.
Page 129: Persistent Switch Control
MERICAN AGNETICS PERATION ERSISTENT WITCH ONTROL ERSISTENT WITCH ONTROL The Model 430 Programmer includes an integral persistent switch heater that provides the capability of controlling the persistent mode of the magnet either locally from the front panel of the Model 430 Programmer using the , or remotely through a PERSIST.
Page 130: Procedure For Entering Persistent Mode
MERICAN AGNETICS PERATION ERSISTENT WITCH ONTROL 1. Turn on the persistent switch heater by pressing the PERSIST. SWITCH CONTROL key to heat the persistent switch heater. 0.00 A Mode: Heating Switch (4) 0.00 Vs PSwitch Heater: ON If the PSwitch Transition setting is set to Timer, the number in NOTE parentheses in the display indicates the number of seconds...
Page 131 MERICAN AGNETICS PERATION ERSISTENT WITCH ONTROL a confirmation that the magnet should be placed in persistent mode. +50.00 A Press ENTER to begin 0.00 Vm Persistent Mode b. When ENTER is pressed, the persistent switch is cooled for the preset persistent switch cooling time (set by the PSwitch Cooled Time ).
Page 132 MERICAN AGNETICS PERATION ERSISTENT WITCH ONTROL d. If the magnet voltage exceeds 0.5 V during this ramp to zero, the Model 430 Programmer beeps to indicate the persistent switch did not transition to the superconducting state. The Model 430 will then turn the switch heater back on immediately and then begin ramping the field/current back to the value before the present cooling cycle initiation:...
Page 133: Procedure For Exiting Persistent Mode
MERICAN AGNETICS PERATION ERSISTENT WITCH ONTROL Refer to page 58 for the procedure to display the magnet current NOTE that was established when the persistent switch was cooled. 6. If desired, the power supply system can be de-energized. Turn the power supply off first followed in a few seconds by the Model 430 Programmer.
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 return to the default field/current display. If the PERSIST.
Page 135 MERICAN AGNETICS PERATION ERSISTENT WITCH ONTROL 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. +50.00 A Mode: Heating Switch (4) +0.86 Vm...
Page 136: Toggling The State Of The Persistent Switch Heater
MERICAN AGNETICS PERATION ERSISTENT WITCH ONTROL OGGLING THE TATE OF THE ERSISTENT WITCH EATER The state of the persistent switch can be toggled by pressing SHIFT and then the PERSIST. SWITCH CONTROL key. By toggling the state of the heater in this manner, there will be no power supply ramping or other automatic functions.
Page 137: Ramping Functions Example
MERICAN AGNETICS PERATION AMPING UNCTIONS XAMPLE AMPING UNCTIONS XAMPLE As an example of ramping to two target field/current settings, refer to figure below. Each step is labeled as 1 through 8. The Model 430 Programmer, for the purposes of the example, is assumed to be in the PAUSED mode at 0 A at the beginning of the ramping example.
Page 138 MERICAN AGNETICS PERATION AMPING UNCTIONS XAMPLE Point 6a. The dashed line between point 6a and 6b is the rapid ramping down of the power supply current which automatically happens after the PSwitch Cooled Time has elapsed. Note that the magnet current remains at the Point 6 value when the magnet was placed in persistent mode.
Page 139: Quench Detection
MERICAN AGNETICS PERATION UENCH ETECTION UENCH ETECTION The Model 430 Programmer continuously monitors the superconducting magnet load and can automatically detect a field/current quench condition. If a quench is detected, the LED will be MAGNET QUENCH illuminated and the display will appear as shown below. +44.36 A Quench Detect @ +80.56 A 0.00 Vs...
Page 140: External Quench Detection
MERICAN AGNETICS PERATION UENCH ETECTION detect condition, or until the quench condition is cleared by a remote command. If the key has been locked , the user will be asked to RESET QUENCH 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 141: External Rampdown
MERICAN AGNETICS PERATION XTERNAL AMPDOWN If the internal quench detection feature is disabled, the Model 430 Programmer attempts to limit the error between the commanded current and the present current to a value that will not result in excessive voltages being introduced across the magnet terminals. Under most operating conditions this will not damage any internal protection circuits of the magnet.
Page 142: External Rampdown While In Persistent Mode
MERICAN AGNETICS PERATION XTERNAL AMPDOWN When connected to the Model 430 Programmer, these contacts can signal the Model 430 to safely and automatically ramp the magnet field to zero, thereby preventing a magnet quench due to low liquid helium level in the system. XTERNAL AMPDOWN WHILE IN ERSISTENT...
Page 143: External Rampdown While Not In Persistent Mode
MERICAN AGNETICS PERATION XTERNAL AMPDOWN The external rampdown signal MUST be cleared before pressing NOTE will yield a response. Further operator control is ENTER inhibited until the external rampdown signal is cleared. 6. Once the external signal has been cleared, ENTER can be pressed. User control will be re-established and the operator can continue manual opera- tion of the system.
Page 144: Summary Of Limits And Default Settings
MERICAN AGNETICS PERATION UMMARY OF IMITS AND EFAULT ETTINGS UMMARY OF IMITS AND EFAULT ETTINGS 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
MERICAN AGNETICS EMOTE NTERFACE 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? SYSTem:ERRor:COUNt? SYSTem:IPaddr? Status System Commands (see page 151 for more information) *STB? *SRE <enable_value>...
Page 147 : SCPI C MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND UMMARY Supply Setup Configuration Queries (see page 153 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 155 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 158 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 162 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 168 for more information) CONFigure:IPNAME <system name>...
Page 151 : SCPI C MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND UMMARY Measurement Commands and Queries (see page 170 for more information) VOLTage:MAGnet? VOLTage:SUPPly? CURRent:MAGnet? CURRent:SUPPly? CURRent:REFerence? FIELD:MAGnet? FIELD:REFerence? Ramping State Commands and Queries (see page 171 for more information) RAMP PAUSE INCR DECR ZERO...
Page 152 : SCPI C MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND UMMARY Rampdown State Commands and Queries (see page 175 for more information) CONFigure:RAMPDown:RATE:SEGments <value> 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>?
Page 153: Programming Overview
MERICAN AGNETICS EMOTE NTERFACE EFERENCE ROGRAMMING VERVIEW W_KEY_PERIOD W_KEY_PLUSMINUS W_KEY_ESC W_KEY_MENU W_KEY_RIGHT W_KEY_LEFT W_KEY_ENTER W_FINE_ADJ_DELTA <value> ROGRAMMING VERVIEW 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...
Page 154 MERICAN AGNETICS EMOTE NTERFACE EFERENCE ROGRAMMING VERVIEW value value The Model 430 Programmer Status System A condition register continuously monitors the state of the instrument. The bits of a condition register are updated in real time. A condition register is read-only and is not cleared when you read the register. A query of a condition register returns a decimal value in the appropriate output buffer which corresponds to the binary-weighted sum of all bits set in the register.
Page 155: Status Byte Register
MERICAN AGNETICS EMOTE NTERFACE EFERENCE ROGRAMMING VERVIEW The Status Byte register group reports conditions from the Standard TATUS EGISTER Event register or output buffers. Data in the output buffer is immediately reported in the “Serial Message Available” bit (bit 3). Clearing a bit in the Standard Event register will update the corresponding bit in the Status Byte register, according to the Standard Event enable register.
Page 156: Standard Event Register
MERICAN AGNETICS EMOTE NTERFACE EFERENCE ROGRAMMING VERVIEW *PSC 0 ting is persistent if the Model 430 Programmer is configured for status clear on power-on). *STB? EADING THE TATUS YTE USING The *STB? returns the contents of the Status Byte register, but it is processed in the command queue like any other command.
Page 157: Command Handshaking
MERICAN AGNETICS EMOTE NTERFACE EFERENCE ROGRAMMING VERVIEW *PSC 0 ting is persistent if the Model 430 Programmer is configured for status clear on power-on). Bit Definitions for the Standard Event Register Decimal Bit Number Value Definition 0 Operation Complete All commands prior to and including *OPC have been executed.
Page 158 MERICAN AGNETICS EMOTE NTERFACE EFERENCE ROGRAMMING VERVIEW The *OPC command historically is designed to generate an SRQ NOTE which can be monitored by a serial poll over a 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 registers using the command queue) and should be ignored in...
Page 159: Configuration
: RS-232 C MERICAN AGNETICS EMOTE NTERFACE EFERENCE ONFIGURATION RS-232 C ONFIGURATION The Model 430 Programmer uses the following fixed parameters related to the RS-232 interface: • Baud Rate: 115200 • Parity: No Parity • Data Bits: 8 Data Bits •...
Page 160: Ethernet Connector
Model 430, the following “Hello” message is immediately returned: American Magnetics Model 430 IP Interface\r\nHello.\r\n Multiple connections to port 7180 are allowed. Multiple connections to port 23 are also allowed, but the special broadcast function described in...
Page 161 MERICAN AGNETICS EMOTE NTERFACE EFERENCE THERNET ONFIGURATION intended to allow the user to optionally show a remote display that remains synced with the front panel display. The broadcast message format will be as the following example output (terminated with a <CR><LF> pair): MSG_DISP_UPDATE:: +50.00 A Mode: Holding 0.00 Vm...
Page 162 MERICAN AGNETICS EMOTE NTERFACE EFERENCE THERNET ONFIGURATION +50.00 A — | ''''|''''|  ''|'''''| +2.50 Vm USTOM ISPLAY HARACTERS Please note that the ramping character and certain other display characters have custom-defined codes beyond 0x7F that do not map directly to ASCII equivalents. The custom character and the actual byte value that is sent in a broadcast message are shown in the table below: Broadcasted Custom Display Characters...
Page 163 MERICAN AGNETICS EMOTE NTERFACE EFERENCE THERNET ONFIGURATION Broadcasted Keypress and Event Messages Message (ASCII format) Meaning SHIFT key pressed MSG_KEY_SHIFT TARGET FIELD SETPOINT key pressed MSG_KEY_TARGET RAMP TO ZERO key pressed MSG_KEY_ZEROFIELD PERSIST. SWITCH CONTROL key pressed MSG_KEY_PERSISTENT RAMP/PAUSE key pressed MSG_KEY_RAMPPAUSE 1 key pressed MSG_KEY_1...
Page 164: Command Reference
Returns the identification string of the Model 430 Programmer. The identification string contains the manufacturer name, model number, serial number, and firmware revision code. Example output: AMERICAN MAGNETICS INC.,MODEL 430,1215001,3.00 *RST • Resets the Model 430 Programmer. This is equivalent to cycling the power to the Model 430 Programmer using the power switch.
Page 165 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • *LED? Returns a comma-delimited list of the LED states with 0=OFF and 1=ON. The LED field order is: SHIFT FIELD AT TARGET MAGNET IN , and PERSISTENT MODE CURRENT LEADS ENERGIZED MAGNET QUENCH Bit Definitions for the LED states Decimal...
Page 166 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • PRINT:SERIALnumber? Returns the serial number. 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>...
Page 167: Status System Commands
MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND 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.
Page 168 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • *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 169: 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 70). SUPPly:TYPE? • Returns the index according to the table below for the selected power supply type according to the table below.
Page 170 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. SUPPly:VOLTage:MAXimum? •...
Page 171: Load Setup Configuration Commands And Queries
MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE ETUP ONFIGURATION OMMANDS AND UERIES The Load Setup Configuration Commands and Queries provide read/ write access to the setup functions available for the Load Setup submenu (page 76). CONFigure:STABility:MODE {0|1|2} • “0” configures the stability mode as “Auto”, “1” is “Manual”, and “2” is “Test”.
Page 172 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • COILconst? Returns the coil constant setting in kG/A or T/A per the selected field units. CONFigure:INDuctance <inductance (H)> • Sets the currently-connected magnet inductance in Henries. INDuctance:SENSe? • Initiates a direct measurement of the currently connected magnet. The measurement requires the magnet to be ramping up or down while not passing through a ramp segment change during the measurement.
Page 173: Switch Setup Configuration Commands And Queries
MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE WITCH ETUP ONFIGURATION OMMANDS AND UERIES The Switch Setup Configuration Commands and Queries provide read/ write access to the setup functions available for the Switch Setup submenu (page 82). CONFigure:PSwitch {0|1} • PSwitch:INSTalled? •...
Page 174: 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. PSwitch:CoolTIME? •...
Page 175 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE manufacturer as the maximum safe limit of magnet operation (for AMI magnets it is the Magnet Rated Current, see page 108). CURRent:LIMit? • Returns the Current Limit in amperes. CONFigure:QUench:DETect {0|1|2|3} • Sending “0” disables the automatic quench detection function of the Model 430 Programmer.
Page 176 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 177: Misc Setup Configuration Commands And Queries
MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE CONFigure:OPLimit:TOFFSET <value (K)> • Sets the offset value in Kelvin for the voltage-to-temperature conversion for the voltage value read from Auxiliary Input 3 (see page 216). OPLimit:TOFFSET? • Returns the offset value in Kelvin for the Auxiliary Input 3 voltage-to- temperature conversion.
Page 178: Lock Commands And Queries
MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • 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.
Page 179 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • CONFigure:LOCK:ZEROfield {0|1} Specifies whether use of the key is locked or unlocked. RAMP TO ZERO Sending “0” unlocks. A “1” locks. “0” is the default value. LOCK:ZEROfield? • Returns “0” for use of the key unlocked, or “1”...
Page 180 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • CONFigure:LOCK:QUench:RESet {0|1} Specifies whether use of the (SHIFT+3) command is RESET QUENCH locked or unlocked. Sending “0” unlocks. A “1” locks. “0” is the default value. LOCK:QUench:RESet? • Returns “0” for use of the (SHIFT+3) command RESET QUENCH unlocked, or “1”...
Page 181 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 182 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 183 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 184: Net Setup Configuration Commands And Queries
MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • CONFigure:LOCK:RAMPDown {0|1} Specifies whether the External Rampdown Enabled picklist value (under the Protection Setup submenu) is locked or unlocked. Sending “0” unlocks. A “1” locks. “0” is the default value. LOCK:RAMPDown? • Returns “0”...
Page 185 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)> •...
Page 186: Measurement Commands And Queries
MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE CONFigure:RAMP:RATE:FIELD <segment>,<rate (kG/s, kG/min, • T/s, T/min)>,<upper bound (kG, T)> Sets the ramp rate for the specified segment (values of 1 through the defined number of ramp segments are valid) in units of kilogauss/second or minute, or tesla/second or minute (per the selected field units and ramp rate units), and defines the field upper bound for that segment in kilogauss or tesla (see page 95 for details of the use of ramp segments).
Page 187: Ramping State Commands And Queries
MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • CURRent:SUPPly? Returns the measured power supply current in amperes. CURRent:REFerence? • The Model 430 maintains an internal, noise-less, digital current ramp reference as the control reference for the magnet. This command returns the ramp reference current in amperes. This command requires firmware version 3.14, or legacy firmware NOTE version 2.64, or later.
Page 188 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • 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 189: Switch Heater Command And Query
MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • STATE? Returns an integer value corresponding to the ramping state according to the table below: STATE? Return Values and Meanings for Query Return Value Meaning RAMPING to target field/current HOLDING at the target field/current PAUSED Ramping in MANUAL UP mode Ramping in MANUAL DOWN mode...
Page 190: Quench State Commands And Queries
MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE UENCH TATE OMMANDS AND UERIES The quench commands control and query the quench state of the Model 430 Programmer. For further information regarding the quench detection functions, see page 123. QUench {0|1} • Clears or sets the quenched state.
Page 191: Rampdown State Commands And Queries
MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE queries can return QUenchFile? QUenchBackup? NOTE thousands of ASCII characters. Ensure your input communicaton buffers are setup to handle a large amount of text. AMPDOWN TATE OMMANDS AND UERIES The external rampdown function also has ramp segmenting capability— the function operates in a manner similar to the normal ramp as described on page 60, but the parameters can only be edited via the remote interface.
Page 192 MERICAN AGNETICS EMOTE NTERFACE EFERENCE OMMAND EFERENCE • RAMPDown:RATE:FIELD: <segment>? Returns the external rampdown rate setting 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 the current upper bound for that range in kilogauss or tesla (per the selected field units).
Page 193: Trigger Functions
MERICAN AGNETICS 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 RIGGER UNCTIONS The Model 430 Programmer defines a trigger enable register,...
Page 194 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 195: Error Messages
MERICAN AGNETICS EMOTE NTERFACE EFERENCE RROR ESSAGES 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 196 MERICAN AGNETICS EMOTE NTERFACE EFERENCE RROR ESSAGES • -102,”Invalid argument” The argument provided as a parameter for the command was invalid. Value arguments must be of the following form: • an optional plus or minus sign, • a sequence of decimal digits, possibly containing a single decimal point, •...
Page 197: Query Errors
MERICAN AGNETICS EMOTE NTERFACE EFERENCE RROR ESSAGES Programmer was either not ramping when the command was issued, or stopped ramping before the command processing was completed. -109,”N/A in present mode” • The command or query is not applicable to the present operational mode.
Page 198: Execution Errors
MERICAN AGNETICS EMOTE NTERFACE EFERENCE RROR ESSAGES -301,”Heating(Cooling) switch” • XECUTION RRORS The user attempted to initiate a disallowed function during the persistent switch heating or cooling transition period. Ramping functions, for example, are disallowed during the transition period. -302,”Quench condition” •...
Page 199: Device Errors
MERICAN AGNETICS EMOTE NTERFACE EFERENCE RROR ESSAGES -401,”Checksum failed” • EVICE RRORS The non-volatile memory which stores the calibration data for the Model 430 Programmer is corrupted. Contact an Authorized AMI Technical Representative for further instructions. Do not continue to use the Model 430 Programmer to operate a superconducting magnet.
Page 200 MERICAN AGNETICS EMOTE NTERFACE EFERENCE RROR ESSAGES In the event the quench and/or rampdown event files continue to NOTE present an error when queried for output, it is possible to clear the stored history to begin anew. For the quench event history this can been done with the *RQC command.
Page 201: Remote Applications And Examples
MERICAN AGNETICS EMOTE NTERFACE EFERENCE EMOTE PPLICATIONS AND XAMPLES EMOTE PPLICATIONS AND XAMPLES -DAQ: The Model 430 can be accessed via a network connection with fully AGNET functional control. This is accomplished through the Ethernet OMPREHENSIVE connection on the rear panel using TCP/IP protocol via a host computer. 430 R ODEL EMOTE...
Page 202 MERICAN AGNETICS EMOTE NTERFACE EFERENCE EMOTE PPLICATIONS AND XAMPLES after Model 430 power-up. The following example illustrates how the IP Address may be determined using the Model 430 menu system: 5. IP Address: Menu > Net Settings > IP Address (Present). 0.00 A —...
Page 203 MERICAN AGNETICS EMOTE NTERFACE EFERENCE EMOTE PPLICATIONS AND XAMPLES Please note that the version provided was current at the time the NOTE Model 430 was shipped. Check the AMI website, or the on-line Git-based Source Code Archive, for updated versions of the Magnet-DAQ application.
Page 204: Scpi-Based Communication Via Rs-232
MERICAN AGNETICS EMOTE NTERFACE EFERENCE EMOTE PPLICATIONS AND XAMPLES 7. Launch the Magnet-DAQ application, choose the Setup panel, and enter the IP address discovered in Step 5 above: 8. Press the Connect toolbar button to start communication. Use the provided Magnet-DAQ interface to remotely control the Model 430. The Keypad panel provides a remote keypad function.
Page 205 MERICAN AGNETICS EMOTE NTERFACE EFERENCE EMOTE PPLICATIONS AND XAMPLES 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 206: Scpi-Based Communication Via Ethernet
MERICAN AGNETICS EMOTE NTERFACE EFERENCE EMOTE PPLICATIONS AND XAMPLES 8. Issue commands or queries as desired. See “Remote Inter- face Reference” on page 129. SCPI-B 1. Connect the Model 430 Programmer RJ-45 Ethernet port either directly to a ASED host computer or through a computer network on which the host computer OMMUNICATION VIA resides: THERNET...
Page 207 MERICAN AGNETICS EMOTE NTERFACE EFERENCE EMOTE PPLICATIONS AND XAMPLES 6. Use < >/< > to locate IP Address (Present), similar to that shown below: 0.00 A — IP Address (Present) 0.00 Vs 192.168.1.12 (DHCP) 7. Make note of the IP Address (Present). 8.
Page 208 MERICAN AGNETICS EMOTE NTERFACE EFERENCE EMOTE PPLICATIONS AND XAMPLES 11.Use the Setup | Ter- minal... command in Tera Term to show the terminal setup parameters. Set the parameters as shown at right. You may choose the Terminal size per your prefer- ence and screen size.
Page 209: Service
MERICAN AGNETICS ERVICE Service YSTEM OMPONENT OUTINE AINTENANCE Electronic devices are sensitive to electrostatic-discharge CAUTION (ESD) damage when opened (cover removed). Observe all standard ESD precautions when handling opened power supplies and instruments. Refer to information on page 197. The Model 430 Programmer was designed and manufactured to give years of reliable service.
Page 210: Model 430 Firmware Upgrades
430 F MERICAN AGNETICS ERVICE ODEL IRMWARE PGRADES also be kept free of obstructions or excessive dust to allow for proper cooling of the unit. 430 F ODEL IRMWARE PGRADES Model 430 firmware upgrades are most easily accomplished using the free, open-source Magnet-DAQ application distributed by AMI for all major, non-mobile computing platforms (see page 185).
Page 211 430 F MERICAN AGNETICS ERVICE ODEL IRMWARE PGRADES ARDWARE AND OFTWARE EQUIREMENTS 1. Personal Computer (PC) networked by Ethernet to the system on which the target Model 430 resides, PC connected directly to the target Model 430 via a “null-modem” or “cross- over”...
Page 212 430 F MERICAN AGNETICS ERVICE ODEL IRMWARE PGRADES The Addr Assignment (Present) must show “DHCP” as originally NOTE set by AMI unless a static IP address has been assigned by your local network administrator. If you are using the direct PC-to-Model 430 connection, you may be required to assign a static IP addresses for the Model 430 on the same subnet as the PC interface with a compatible mask setting (see page 106).
Page 213: Troubleshooting Hints
MERICAN AGNETICS ERVICE ROUBLESHOOTING INTS 6. Type “put Model430.exe” and Enter. 7. Type “quit” and Enter to exit. 8. Cycle power on the Model 430 and observe the firmware version banner during boot. ROUBLESHOOTING INTS The following paragraphs serve as an aid to assist the user in troubleshooting a potential problem with the Model 430 Programmer within a superconducting magnet system.
Page 214: Hints For Commonly Encountered Errors
MERICAN AGNETICS ERVICE ROUBLESHOOTING INTS ® 4. Ensure all plastic, paper, vinyl, Styrofoam and other static generating mate- rials are kept away from the work area. 5. Minimize the handling of the Model 430 Programmer system and all static sensitive components. 6.
Page 215 MERICAN AGNETICS ERVICE ROUBLESHOOTING INTS V-V Mode Input Range Picklist Values Fuse Identification Fuse Rating Fuse Size T 800 mA T 250 mA 5 x 20 mm T 100 mA Installing fuses of incorrect values and ratings could result in CAUTION damage to the Model 430 Programmer in the event of component failure.
Page 216 MERICAN AGNETICS ERVICE ROUBLESHOOTING INTS If the persistent switch heater is activated without an inductive NOTE load present at the supply outputs, oscillating current will result. The Model 430 Programmer is designed to operate large inductive loads with only relatively small resistive characteristics (i.e. superconducting magnets).
Page 217 MERICAN AGNETICS ERVICE ROUBLESHOOTING INTS If an energy absorber is present in the system, the Model 430 NOTE Programmer must command enough power supply voltage to overcome any forward voltage drop due to the energy absorber. Increase the Voltage Limit to account for the +5 VDC energy absorber voltage drop.
Page 218 MERICAN AGNETICS ERVICE ROUBLESHOOTING INTS ANNOT LACE THE AGNET IN ERSISTENT 1. Ensure there is adequate LHe level in the cryostat to allow the persistent switch to cool to the superconducting state. 2. Ensure the persistent switch cooldown time is adequate (see page 86). Con- duction-cooled systems may have much longer switch cooldown periods than wet magnet systems.
Page 219 MERICAN AGNETICS ERVICE ROUBLESHOOTING INTS 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. a persistent switch is not heated on a connected magnet). 1.
Page 220 MERICAN AGNETICS ERVICE ROUBLESHOOTING INTS 3. Ensure that there are no inadvertent thermal paths between the cryogenic environment and the 300K environment. Ensure all transfer lines are removed from the cryostat; check the position of break-away vapor-cooled current leads. 4. Ensure the LHe level sensor is not continuously energized if continuous level indication is not necessary.
Page 221: Additional Technical Support
MERICAN AGNETICS ERVICE DDITIONAL ECHNICAL UPPORT 430 A ODEL PPEARS TO ONNECTING TO ETWORK If the IP Address Assignment value is changed, the Model 430 NOTE Programmer power must be cycled off and then back on to complete the change. 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.
Page 222 MERICAN AGNETICS ERVICE ETURN UTHORIZATION...
Page 223: Appendix
MERICAN AGNETICS PPENDIX Appendix AGNET TATION ONNECTORS The two 25-pin D-sub female Magnet Station Connectors are identically wired and connected pin-for-pin internally. Spare connections may be used for custom coil taps or other signals. For maximum noise immunity, use shielded cabling and connect NOTE one end of the shield to the Magnet Station Connector shell.
Page 224 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 225: 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 226: Programmer Shunt Terminals
MERICAN AGNETICS PPENDIX ROGRAMMER HUNT ERMINALS The connectors route the incoming signals from the Magnet Station 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.
Page 227: Current Transducer Connector
MERICAN AGNETICS PPENDIX URRENT RANSDUCER ONNECTOR URRENT RANSDUCER ONNECTOR CURRENT TRANSDUCER Operating the system without the connection between the CAUTION Model 430 and the current transducer (CT) can result in loss of control, and may damage the CT. The current transducer connector, which is only present for the High- 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.
Page 228: Program Out Connector
MERICAN AGNETICS PPENDIX ROGRAM ONNECTOR ROGRAM ONNECTOR Program Out Connector Pin Definitions Function Function not used not used not used not used not used Program Out Voltage Program Out Common not used not used not used not used not used not used not used not used...
Page 229: Quench I/O Connector
I/O C MERICAN AGNETICS PPENDIX UENCH ONNECTOR I/O C UENCH ONNECTOR 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 230: External Quench Detection Input
I/O C MERICAN AGNETICS PPENDIX UENCH 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 231: External Quench Detection Output
I/O C MERICAN AGNETICS PPENDIX UENCH 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 heated time (or detects the transition using the magnet voltage per the PSwitch Transition setting...
Page 232: Auxiliary Inputs Connector
MERICAN AGNETICS PPENDIX UXILIARY NPUTS ONNECTOR UXILIARY NPUTS ONNECTOR 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 233: 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 234: Connector
: RS-232 C MERICAN AGNETICS PPENDIX ONNECTOR RS-232 C ONNECTOR The RS-232 connector for legacy devices (pre-Rev 9 internal PCB with firmware prior to version 3.0, see page 194) is a standard DTE 9-pin D- sub male connector. This connector requires a gender changer and null modem adapter to connect with COTS USB-to-serial cables.
Page 235: 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 236 MERICAN AGNETICS PPENDIX BBREVIATIONS AND CRONYMS USED IN THIS ANUAL Abbreviations and Acronyms (Continued) Term Meaning Power supply output voltage 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 237 MERICAN AGNETICS PPENDIX BBREVIATIONS AND CRONYMS USED IN THIS ANUAL Abbreviations and Acronyms (Continued) Term Meaning Persistent switch; a switch which, if perfectly realized, has zero resistance when at superconducting temperatures. An integrated heater element allows the switch to be heated for purposes of charging or discharging a supercon- ducting magnet.
Page 238: Short-Sample Mode
MERICAN AGNETICS PPENDIX HORT AMPLE ODE 5 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 239 MERICAN AGNETICS PPENDIX HORT AMPLE 10,000 is required for the sample voltage signal connected to Auxiliary Input 2 in Short-Sample Mode. +50.00 A — Status: Holding +24.53 Vss Short-Sample Mode The sample voltage must be connected to the Auxiliary Input 2 for NOTE the sample quench detection feature to function.
Page 240 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 241: Power Supply Details
MERICAN AGNETICS PPENDIX OWER UPPLY ETAILS OWER UPPLY ETAILS This section provides the technical details of the individual power supply component of the AMI Bipolar Power Supply Systems. All power supply parameters, both hardware and software, WARNING have been set by AMI, and no field adjustments or reconfiguration of the power supply should be attempted in the field.
Page 242 MERICAN AGNETICS PPENDIX OWER UPPLY ETAILS INGLE PECIFICATIONS Model 08150PS Power Supply Specifications Specification Rating / Description Condition INPUT CHARACTERISTICS nominal 110-240 VAC Single Phase. Voltage (AC) Wide Range; contact AMI for operation range 100-255 VAC to 265 VAC. Voltage (DC) range 125-420 VDC No regulatory agency approval.
Page 243 MERICAN AGNETICS PPENDIX OWER UPPLY ETAILS Model 08150PS Power Supply Specifications (Continued) Specification Rating / Description Condition Overtemperature protection Shutdown Open Load wire protection Shutdown Parallel operation Active load sharing Up to 5 units, maximum. GENERAL (ENVIRONMENTAL) SPECIFICATIONS operating 20 to +50 deg C Rated load.
Page 244 MERICAN AGNETICS PPENDIX OWER UPPLY ETAILS INGLE UPPLY IMENSIONS Model 08150PS Dimensions - Front and Rear Views...
Page 245 MERICAN AGNETICS PPENDIX OWER UPPLY ETAILS Model 08150PS Dimensions - Top and Side Views...
Page 246: Energy Absorption
MERICAN AGNETICS PPENDIX NERGY BSORPTION NERGY BSORPTION 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 20 and Figure on page 73).
Page 247 Index MERICAN AGNETICS NDEX protection commands 162 quench control 174 abbreviations and acronyms ramping commands 168 absolute limits ramping states 171 status commands 151 AMI internet e-mail address switch heater control 173 AMI web address system commands 148 trigger commands 178 applicable hardware trigger functions 177 summary...
Page 248 MERICAN AGNETICS NDEX example Ethernet communication setup 190 data logging magnet specification sheet 108 de-energizing the system Model 430 remote control application 185 ramp rate menus 61 default display modes ramping functions 121 RS-232 communication setup 188 default password setup 108 default settings system setup 108 DHCP...
Page 249 MERICAN AGNETICS NDEX pswitch current 84 pswitch current detect 83 pswitch heated time 85 equation 91 pswitch installed 82 how to display value 93 pswitch ramp rate 86 offset 93 stability setting 77 slope 93 locked inductance, calculate long discharge time installation loop gain earth ground 23...
Page 250 MERICAN AGNETICS NDEX settings protection 96 stability settings lock 100 password target field setpoint lock 98 voltage limit lock 99 pause voltmeter lock 101 persistent mode Vs / Vm lock 100 entering 114 Model 430 exiting 117 appears to lock up 205 viewing established magnet current 58 remote control application 185 persistent switch...
Page 251 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 49 example 108 switch failure 125 load submenu 76 misc submenu 95 quench rate supply submenu 70 quench, magnet...
Page 252 MERICAN AGNETICS NDEX max output current 75 max output voltage 74 min output current 74 min output voltage 74 select power supply 71 v-v mode range 75 system configuration - see configuration system features TeraTerm terminal torque limits test procedure torque limit on terminals troubleshooting cannot enter persistent mode 202...

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