Operation Manual This manual covers models: SW5250A SW3500A SW1750A 9250 Brown Deer Road San Diego, CA 92121-2294 1-800-733-5427 Tel: (858) 450-0085 Fax: (858) 458-0267 Email: sales@elgar.com www.elgar.com ©2005 by Elgar Electronics Corporation This document contains information proprietary to Elgar Electronics Corporation. The information contained herein is not to be duplicated or transferred in any manner without prior written permission from Elgar Electronics Corporation. May 9, 2005 Document No.
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Elgar Electronics Corporation (hereinafter referred to as Elgar) warrants its products to be free from defects in material and workmanship. This product warranty is effective for one year from the date of shipment to the original purchaser.
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Before applying power to the system, verify that the SW Series unit is configured properly for the user’s particular application. WARNING! Hazardous voltages in excess of 280 VRMS, 600V peak may be present when covers are removed. Qualified personnel must use extreme caution when servicing this equipment. Circuit boards, test points, and output voltages may be floating above (below) chassis ground.
For safe operation, it is required that output power neutral be connected to chassis ground. The SW system is shipped with a ground wire between power neutral and chassis ground. These operating instructions form an integral part of the equipment and must be available to the operating personnel at all times. All the safety instructions and advice notes are to be followed.
1.1 Introduction.................................................................................................... 1-1 1.2 Input Specifications ....................................................................................... 1-3 1.3 Output Specifications: Normal Operation Mode ............................................ 1-3 1.4 Waveform Specifications............................................................................... 1-5 1.5 Measurements (Optional) ............................
Contents 2.3 Pre-installation Inspection ..............................................................................2-2 2.4 Installation ......................................................................................................2-2 2.5 Air Intake and Exhaust ...................................................................................2-2 2.6 Installation/Dimensional Drawing ...................................................................2-3 2.7 Input/Output Connectors .......
SW 5250A•SW 3500A•SW 1750A Contents 3.4 Front Panel Programming Conventions....................................................... 3-32 3.5 Front Panel Programming Exercises ........................................................... 3-33 3.6 3.5.1 Current Inrush Example .................................................................. 3-33 3.5.2 Voltage Spike Example ................................................................... 3-37 3.5.3 Voltage Dropout Example .........................
Contents SW 5250A•SW 3500A•SW 1750A Figure 1–1 Elgar Model SW 5250A AC Power Source (Rack Mount Version)...........1-1 Figure 2–1 Mounting Dimensions, SmartWave Front View.........................................2-3 Figure 2–2 Mounting Dimensions, SmartWave Top and Side Views ..........................2-4 Figure 2–3 SmartWave Rear Panel ............................................................................2-5 Figure 2–4 Parallel Connections ...........................................................
!" # The Elgar SmartWaveTM Models SW 5250A, SW 3500A, and SW 1750A use transformerless, direct coupled amplifiers and a true arbitrary waveform generator based controller. This technology allows you to create, edit and generate complex waveforms with high DC content for critical ATE and power line disturbance simulation testing.
General Description SW 5250A•SW 3500A•SW 1750A The SmartWave model numbers are identified below: Power Options: 5250 3500 1750 SW5250 A–1–3–2–XXX Chassis Description: A = Standard High Impedance AE = Standard IEC Low Impedance M, ME, S, SE = N/A Power Conditioning Options: 1 = Rectifier USA 2 = Rectifier International 3 = PFC USA 4 = PFC International 5, 6 = N/A Controller Options: 1 = Manual 2 = GPIB 3 = Arbitrary GPIB Test and Measurement Options: 1 = No T&M 2 = Standard T&M Non-Standard Options: Blan
SW 5250A•SW 3500A•SW 1750A General Description The SmartWave sources are true DC as well as AC power supplies. Up to 312 VRMS are available in AC or AC+DC modes. Multi-phase models can be switched to single or three-phased operation via the front panel or the GPIB. A wide frequency range of DC or 40 Hz to 5 kHz is available for a broad array of applications. Utilizing the latest in AC switch mode technology, the SmartWave has less than -60 dB of noise and ripple with total harmonic distortion (THD) of <0.
General Description SW 5250A•SW 3500A•SW 1750A Total Harmonic Distortion (Full Linear Load or No Load): 0.25% maximum, 40 to 100 Hz; 0.5% maximum to 500 Hz; and 1% maximum to 1 kHz plus 1%/kHz to 5 kHz. AC Noise Level: >60 dB RMS below full output (sine wave, 40 to 500 Hz). Amplitude Stability With Remote Sense: ±0.1% of full scale over 24 hours at constant line, load and temperature. Load Regulation: ±0.025% of full scale voltage for a full resistive load to no load; above 1 kHz, add ±0.015%/kHz.
SW 5250A•SW 3500A•SW 1750A ',%& * General Description $%"#&#"' # ( Waveshape Libraries 50 factory-supplied in flash memory; storage available for up to 50 user created in non-volatile RAM. User Created Setups A total of 100 steady-state waveforms, consisting of parameters such as waveshapes from the libraries plus amplitude, frequency, phase angle and current limit. Sequencing/Transient Programs 1000 user-created segments stored in non-volatile RAM up to 100 segments per sequence.
General Description SW 5250A•SW 3500A•SW 1750A - %'(! %* % '$'0#+##%( ' - %'(! %* % '$'0#+#1 ""! '"#%( 4½ Digit Analog to Digital Measurement System Temperature Range for Specified Accuracy 25°C ±5°C. Operating Temperature Range 0°C to 45°C (32°F to 113°F). - 2'(% %! '+ +'3% %'(! %* % Valid for phases A, B and C (use phase A for Parallel Mode). Range 0V to 350.0V, plus sign bit for DC mode. Accuracy ±0.3% of range, DC or 47 Hz to 1 kHz; ±0.5% of range, 40 to 47 Hz and for 1 kHz to 5 kHz.
SW 5250A•SW 3500A•SW 1750A - - %'4 ! % General Description %'(! %* % Valid for phases A, B, and C (use phase A for Parallel Mode). Range 1 0A to 28A; 3-phase mode, 312V range. Range 2 0A to 56A; 3-phase mode, 156V range. Range 3 0A to 84A; parallel mode, 312V range. Range 4 0A to 168A; parallel mode, 156V range. Accuracy ±5% of range, 40 to 500 Hz; add ±1%/kHz, 500 to 5 kHz. Temperature Coefficient ±300 ppm/°C outside specified range. - 5 6% %'(! %* % Valid for phases A, B, and C.
General Description - 8 6% SW 5250A•SW 3500A•SW 1750A '" '+"!+' # Valid for phases A, B, C, and TOTAL (use phase A for Parallel Mode). The Power Factor is calculated from the Power and VA measurements. Phase powers are measured then the total power is calculated; phase VAs are measured then the total VA is calculated. Power is divided by VA; the result is the Power Factor. Range: 0 to 1.00. Accuracy: ±5% of range at full power, DC or 40 to 500 Hz for crest factors <2.0.
SW 5250A•SW 3500A•SW 1750A 5 %" # ' General Description '&% 1 Overvoltage Shutdown: Programmable for 15V to 255V peak, 156V range; 30V to 510V peak, 312V range. Undervoltage Shutdown: Automatic, not programmable. Programmable Current Limit Shutdown: Can be set to 1% of range; 0.5A to 13A for 156V range, 0.5A to 6.5A for 312V range. Programmable Current Limit with Timed Shutdown: Can be set to 1% of range; the timeout can be set from 100 msec to 10 sec.
General Description 8 SW 5250A•SW 3500A•SW 1750A 21(#"'+ $%"#&#"' # ( . ++ %+(/ Height: 8.75" (222 mm) Width: 19" (483 mm) Depth: 23.5" (597 mm) Weight: SW 5250A - 126.5 lbs. (57.2 kg) SW 3500A - 100 lbs. (45.4 kg) SW 1750A - 73 lbs. (33.1 kg) Cooling: Air is drawn in from the top and sides and exhausted through the rear of the chassis. 200 CFM is required for specified operation. 9 ,# *% '+ ' ' Operating Temperature: 0°C to 45°C (32°F to 113°F). Note temperature measured at air inlet of SW.
SW 5250A•SW 3500A•SW 1750A • General Description SYNC OUT. User programmed for: Cycle Start, all cycles Segment Start. all segments Segment Start, selected segments For loads ≥2 kΩ: Vout ≤1V Low State; Vout ≥2.4V High State; Negative edge is at 0° ±30 µs. • CLOCK/LOCK – Input/Output Connection CLOCK configures BNC to output pulses at programmed frequency for loads ≥2 kΩ. Vout ≤1V Low State; Vout ≥2.4V High State. Negative edge is at 0° ±30µs.
General Description • SW 5250A•SW 3500A•SW 1750A External Gain Control 0 to ±7.07 VDC provides zero to full scale programmed voltage output (±2% of full scale output). • External Input Impedance ≥30 kΩ. • System Firmware System firmware is stored in flash memory. This makes it possible to upgrade the firmware without disassembling or returning the unit. $# ( • Parallelable For Additional Power above 5250A VA • External Waveform Creation Software • Input Power Factor Correction to 0.
SW 5250A•SW 3500A•SW 1750A General Description + ((' 1 & %"2 #"'+ % * ( %, An RMS Servo uses a feedback scheme to regulate the RMS value of the output voltage or current by adjusting the RMS value of the reference input signal. For example, if the output sags under load by 1%, the reference input is increased by 1%. Thus, the net sag is zero and steady-state load regulation is greatly improved (“DC” output impedance is very low). Typically, it takes several cycles to respond to new load conditions.
General Description SW 5250A•SW 3500A•SW 1750A The SmartWave allows you to select boost On or Off. In some applications, the transient response time associated with the boost function is unacceptable, but tight RMS regulation is still required. Boost should be turned off in such cases. An example is when a sequence is programmed with various sags and surges which must have sharp transitions from one RMS voltage to another.
!" # The Elgar Model SW 5250A, SW 3500A, or SW 1750A has been fully calibrated and tested prior to shipment. The instrument is ready for immediate use upon receipt. > The SmartWave unit weighs 73–126.5 lbs. (33.1–57.2 kg), depending on the model. A minimum two–person lift is required! > Hazardous voltages are present when operating this equipment. Please read the Safety Notice at the beginning of this manual prior to installation, operation, or maintenance.
Installation SW 5250A•SW 3500A•SW 1750A %=# ( '++' # ($%" # Perform a visual inspection of the instrument when it is removed from the shipping container. Check for shipping damage such as dents, scratches, distortion, and damaged connectors. ( '++' # The SmartWave unit is 8.75" (222 mm) high and is designed to be installed in a standard 19" (483 mm) RETMA rack or a transit case; pem-nuts are provided for mounting optional slides. > Avoid blocking the instrument air intakes or exhaust.
SW 5250A•SW 3500A•SW 1750A 5 Installation ( '++' # @ #* % (# '+ '6 # 3 Refer to Figure 2–1 and Figure 2–2 for information on outline and mounting dimensions of the unit and customer wiring conduit details. Refer to Figure 2–3 and Table 2–2 through Table 2–6 for rear panel connector information.
Installation SW 5250A•SW 3500A•SW 1750A Figure 2–2 Mounting Dimensions, SmartWave Top and Side Views 2-4 Operation Manual
SW 5250A•SW 3500A•SW 1750A Installation Figure 2–3 SmartWave Rear Panel Operation Manual 2-5
Installation 7 SW 5250A•SW 3500A•SW 1750A $! @ ! $! %" ( Table 2–2 provides a listing of the SW input and output connectors and other data. Table 2–3 through Table 2–6 provide specific pinout information. The RS232 AND AUX OUT connectors (Figure 2–3, Items 4 and 8, respectively) are Elgar proprietary; thus, the pinouts will not be provided. A @ A 1 SYNC OUT BNC KINGS, PN KC-79-179 2 CLOCK & LOCK BNC KINGS, PN KC-79-179 3 EXT IN ±7.
SW 5250A•SW 3500A•SW 1750A 7 %" Installation ( The diagram below illustrates the signal and return connections. Refer to Figure 2–3, Items 1 and 2. 7 < . ?% '+ $! / Refer to Figure 2–3, Item 3. A 1 SHIELD CHASSIS 2 SHIELD CHASSIS 3 SHIELD CHASSIS 4 SHIELD CHASSIS 5 SHIELD CHASSIS 6 through 9 Not Used Not Used 10 EXT_IN_A ±7.25 Vpeak DC to 5000 Hz, ≥30 kΩ 11 EXT_IN_B ±7.25 Vpeak DC to 5000 Hz, ≥30 kΩ 12 EXT_IN_C ±7.
Installation 7 SW 5250A•SW 3500A•SW 1750A . #%" '!+ #"' / The DFI connector on the rear panel has both input and output functionality. The DFI Output Relay indicates a shutdown fault has occurred on the SW. It is a SPST reed relay with rear panel connections to the normally closed output contacts. When the SW is operating the relay is energized so that the contacts are open. When a fault occurs, or if the unit should lose power, the relay closes to indicate a fault has occurred.
SW 5250A•SW 3500A•SW 1750A 7 Installation 88 Refer to Figure 2–3, Item 6. A A A 1 DIO1 9 IFC 17 REN 2 DIO2 10 SRQ 18 GND (TW PAIR W/DAV) 3 DIO3 11 ATN 19 GND (TW PAIR W/NRFD) 4 DIO4 12 SHIELD 20 GND (TW PAIR W/NDAC) 5 EOI 13 DIO5 21 GND (TW PAIR W/IFC) 6 DAV 14 DIO6 22 GND (TW PAIR W/SRQ) 7 NRFD 15 DIO7 23 GND (TW PAIR W/ATN) 8 NDAC 16 DIO8 24 SIGNAL GROUND Table 2–5 IEEE 488.2 Connector Pinout 7- +',% %" Refer to Figure 2–3, Item 7.
Installation 75 SW 5250A•SW 3500A•SW 1750A ! #3 The three waveform outputs (TRIGGER OUT, CLOCK & LOCK, SYNC OUT) share the same ground. This ground should not exceed ±20V Peak from chassis ground. If possible, this ground should be connected to the chassis. DFI and IEEE 488.2 share the same signal ground. 8 $! 6% %:!# %* % ( Input power is connected to the SW 5250A, SW 3500A, or SW 1750A via the rear panel connectors. See Table 2–7 and Table 2–8 for input current values.
SW 5250A•SW 3500A•SW 1750A MAXIMUM LINE CURRENT SW 5250A (SW 5250M, SW 5250S) PFC PFC RECT RECT Installation MAXIMUM NEUTRAL CURRENT F1-F3 FUSE RATING RECOMMENDED CIRCUIT BREAKER RATING (MAX.
Installation 8 SW 5250A•SW 3500A•SW 1750A 87 5 = 2'(% $% ' # . = #% / Connect the input wires to the phase A (F1), B (F2), and C (F3) input fuse terminals (no Neutral is required). Ensure that the chassis safety ground is also connected. Use cables with ratings equal to or greater than the current rating listed on the unit or in Table 2–7. Any phase sequence of wiring can be used. 8 -7 = 2'(% $% ' # . = #% / It is essential that the Neutral connection is present when using the unit.
SW 5250A•SW 3500A•SW 1750A 9 9 ! $! - -; Installation %" # ( ! $! 2% ' %" # ( The Model SW 5250A can power 1-phase, 2-phase and 3-phase loads. Local or remote sensing can be used; if no sense lines are connected, the unit automatically reverts to local sense. Outputs may be directly paralleled for greater power. If the outputs are paralleled it is important to program the unit to the parallel mode before shorting the outputs together (refer to Figure 2–4).
Installation SW 5250A•SW 3500A•SW 1750A Figure 2–4 Parallel Connections Figure 2–5 Sense Lead Connections for 3-Phase Output 2-14 Operation Manual
SW 5250A•SW 3500A•SW 1750A Installation The output power and sense leads should be shielded and the shield connected to the chassis to prevent noise pickup (or radiation to sensitive circuits in the vicinity). Again, the shield should be connected to chassis ground. Due to the high voltages present, 312 VRMS line-to-neutral and 437 VRMS line-to-line cables rated to these voltages must be used for both the Power and Sense leads.
Installation SW 5250A•SW 3500A•SW 1750A Such a loss directly detracts from the quality performance specifications of this Elgar instrument. Frequently, these codes do not consider bundles of wire within a cable arrangement. In high performance applications, as in motor start-up and associated inrush/ transient currents, additional consideration is required. The cable wire gauge must consider peak voltages and currents, which may be up to ten times the average values.
SW 5250A•SW 3500A•SW 1750A Installation The following notes apply to Table 2–9 and to the power cable definition: 1. The above figures are based upon insulated copper conductors at 25°C (77°F), two current carrying conductors in the cable plus a safety (chassis) ground. Columns 3 and 4 refer to “one way” ohms and IR drop of current carrying conductors (e.g., a 50-foot cable contains 100 feet of current carrying conductor). 2.
Installation SW 5250A•SW 3500A•SW 1750A 3. Aluminum wire is not recommended due to soft metal migration at the terminals, which may cause long term (on the order of years) poor connections and oxidation. If used, increase the wire gauge by two sizes (e.g., specify 10 gauge aluminum instead of 14 gauge aluminum). 4. Derate the above wire gauge (use a heavier gauge) for higher environmental temperatures since conductor resistance increases with temperature. 5. 6.
!" # The following is an overview of the controls and display for the SmartWave unit. Context-sensitive help is available from the front panel by pressing the Help key. ' %+ +( The SW front panel is used for programming and data entry in local mode operation. The front panel is shown in Figure 3–1, followed by a description of each of the controls.
Operation SW 5250A•SW 3500A•SW 1750A POWER ON/STANDBY SWITCH. Pressing the top portion of the switch turns power on; pressing the bottom portion of the switch places the unit in the STANDBY mode. When power is turned on, the unit goes through the power up cycle. This cycle may last between 30 seconds and five minutes, depending on the amount of software that needs to be loaded and conditioned. The Elgar logo will be displayed during the power up cycle.
SW 5250A•SW 3500A•SW 1750A Operation KEYPAD. The 12-key keypad is used to enter numeric values (0 through 9), a decimal point (when required), and to change the polarity of the selection via the +/- key. For example, to enter an amplitude value of “-139.2,” enter 1, 3, 9, decimal point, 2; press the +/- key to change the polarity; then press the Enter key to accept the value. FUNCTION KEYS F1 THROUGH F3. Functions of these keys depend on the selected menu item and is defined in the Help screens.
Operation SW 5250A•SW 3500A•SW 1750A • Use the Enter and Menu keys or the Right/Left Arrow keys to move between the menus. • Use the Up/Down Arrow keys to cycle through the items within a specific menu. • When you select an item, you can enter data in two ways: (1) Use the keypad to type in the data, or (2) press the Enter key to place a box around the value area, then use the Up/Down Arrow keys or the Knob to select the data to be entered. • Press the Enter key to accept the data.
SW 5250A•SW 3500A•SW 1750A Operation % ! The PROGRAM menu allows you to: • Select a phase • Program amplitude • Program current limit • Program frequency • Program phase offset (phase offset represents a phase lead with respect to the internal reference) • Select a function to be output on the selected phase.
Operation SW 5250A•SW 3500A•SW 1750A * Reference Section 3.4, Front Panel Programming Conventions. ** There is only one frequency setting for all three phases. Changing the frequency of one phase changes the frequency for all phases. *** The SW can accept only positive numbers when programming phase angle offset.
SW 5250A•SW 3500A•SW 1750A ' %+ Operation %@ %"'++ The current state of the SW can be saved and restored using the Front Panel Store/Recall feature. The following Program Menu parameters are affected: • Amplitude • Current Limit • Frequency • Phase Angle • Function The Store/Recall Menu can be accessed by pressing F2 from any Program menu edit field. Setups are stored/recalled as a number from 0 to 49. The incr./dec. mode is not available for this menu.
Operation SW 5250A•SW 3500A•SW 1750A % ! If equipped with the Test and Measurement option, the MEASURE menu allows you to: • Measure voltage (RMS) • Measure current (RMS) • Measure frequency • Measure phase angle (referenced to a master) • Measure power (W) • Measure apparent power (VA) • Measure power factor (PF) • Measure peak current. MAIN MENU OUTPUT [OFF] PROGRAM AMPL A 120.00 V MEASURE OFF 0.00 WAVEFORM OFF 0.00 SEQUENCE OFF 0.00 INSTR OFF 0.00 SYSTEM OFF 0.
SW 5250A•SW 3500A•SW 1750A Operation % ! The WAVEFORM menu allows you to perform a variety of actions on waveshapes and waveforms, including the creation of a new waveform based on a waveshape in memory. The waveshapes and waveforms are limited to spikes, dropouts, sags and surges of existing waveforms in the scratchpad area. This is accomplished by loading the existing waveshape into the waveform scratchpad then editing it.
Operation SW 5250A•SW 3500A•SW 1750A !0= % ! The WAVEFORM menu allows you to LOAD an existing waveform from non-volatile or flash memory to the waveform scratchpad. Any existing information in the scratchpad is erased when a new waveform is loaded.
SW 5250A•SW 3500A•SW 1750A Operation !0= % ! The WAVEFORM menu allows you to EDIT a waveform in the scratchpad.
Operation SW 5250A•SW 3500A•SW 1750A !0= % ! The WAVEFORM menu allows you to VIEW a waveform: WAVEFORM OUTPUT [OFF] LOAD EDIT VIEW SAVE DELETE Selecting VIEW will display the waveform in the scratchpad as shown below. WAVEFORM OUTPUT [OFF] 4 2 4 or 2 1 2 0 4 2 4 or 2 2 1 90 180 270 Basic display after selecting VIEW The minimum and maximum Vpeak values displayed on the vertical axis (either -442 to +442 or -221 to +221) are based on the selected voltage range setting in the INSTRUMENT menu.
SW 5250A•SW 3500A•SW 1750A Operation !0= % ! The WAVEFORM menu allows you to assign a name to a new waveform and SAVE it from the scratchpad to non-volatile memory. 1. Use the Up/Down Arrow keys or the Knob to enter the custom waveform name. Press the Right Arrow key to proceed to the next character; press the Left Arrow key to backspace. The last character must be “–”. 2. Press the Enter key. 3. Go to SAVE or SAVE RMS and press the Enter key to save.
Operation SW 5250A•SW 3500A•SW 1750A - !0= % ! The WAVEFORM menu allows you to DELETE a waveform stored in non-volatile memory. ALL USER WAVEFORMS - Erases the 50 user waveform locations in non-volatile RAM. Any user waveforms currently running will not be deleted. INITIALIZE MEMORY - Resets the waveform library to the factory settings. All factory waveforms will be restored and all user waveforms stored in non-volatile RAM will be erased.
SW 5250A•SW 3500A•SW 1750A - D Operation % ! The SEQUENCE menu allows you to create, edit, and execute a sequence. SEQ MENU OUTPUT [OFF] LOAD EDIT SAVE DELETE EXECUTE - !0= % ! The SEQUENCE menu allows you to LOAD an existing sequence from non-volatile or flash memory to the sequence scratchpad. NEW - Erases all segments in the SEQUENCE scratchpad.
Operation SW 5250A•SW 3500A•SW 1750A - !0= % ! The SEQUENCE menu allows you to EDIT a sequence in the scratchpad. Frequency or amplitude can be ramped over the segment duration. SEQ EDIT OUTPUT [OFF] SEG 0 FREQ 60.00 CYC 0 TIME 0.00 AMPL FUNC ms θ ANGL A 0.00 Sine 0.00 B 0.00 Sine 120.00 C 0.00 Sine 240.
SW 5250A•SW 3500A•SW 1750A Operation • A ramp must always consist of at least two segments so that starting and ending values can be specified. • Ramps can be increasing or decreasing in value. • Voltage and frequency ramping is available; phase angles cannot use the ramping function. • Voltage ramping for Phase A, Phase B, Phase C, and Frequency are all independently controlled and can be run in any combination.
Operation SW 5250A•SW 3500A•SW 1750A The “CYCLES” Edit Field When the field select cursor is at the CYCLES field, pressing F1 will toggle the SYNC SELECT symbol “*”. This is a flag used in conjunction with the SYNC field of the Sequence Execute menu; if SYNC is set to SELECT SEG, only those segments that are enabled will generate a sync signal at the front panel BNC connector. If SYNC is set to EVERY SEG, every segment will generate a sync signal.
SW 5250A•SW 3500A•SW 1750A Operation SAVE Sub-Menu Status and Information Data: Menu Item Status and Information Line NAME [–> = next char, <– = backsp] SAVE [store sequence in library] - !0= % ! The SEQUENCE menu allows you to DELETE a sequence stored in non-volatile memory. ALL USER SEQUENCES - Erases all user sequence locations in non-volatile RAM. INITIALIZE MEMORY - Resets the sequence library to the factory settings.
Operation -- SW 5250A•SW 3500A•SW 1750A < !0= % ! The SEQUENCE EXECUTE sub-menu allows the selection of the start, run, and stop modes of a sequence. The front panel operation is defined here, but all modes are also available via the GPIB. A sequence can be executed in any combination of the following modes: • A sequence can be run in its entirety, or stepped through one segment at a time. When in this “step” mode, the most recent segment can be repeated.
SW 5250A•SW 3500A•SW 1750A Operation LOAD SEQ Loads a sequence for execution from the sequence library or the sequence scratchpad. When running under GPIB control, the Event Status Register and serial polling can be used to indicate when the sequence loading is complete. The front panel display will indicate “Processing sequence...” while loading, and “Sequence loaded” when complete.
Operation 5 SW 5250A•SW 3500A•SW 1750A . ( !* % / % ! The INSTR menu allows you to: • Set the output range (156 or 312 volts). • Select either AC or AC+DC coupling. • Select current limit mode, either shutdown, foldback or time-out mode (foldback for the time specified in the ITIMO field then shutdown mode). Foldback mode is unavailable while SYSTEM/EXTERNAL/ LOW FREQ is on. • Select the time for the time-out mode. • Select the peak overvoltage limit. • Select amplifier parallel operation.
SW 5250A•SW 3500A•SW 1750A 7 % ! 7 !0= % ! Operation The SYSTEM USER sub-menu allows you to: • Configure power up values. • Execute the unit’s self-test. • Enable/disable hint messages. • Enable/disable the sync output in the Program mode (i.e., when a sequence is not running).
Operation SW 5250A•SW 3500A•SW 1750A SYNC OUT selects the output sync signal to ON, OFF or EVENT. In the ON position, the signal is driven by the output frequency of the waveform, or sequence settings. In the EVENT position, a pulse will be generated for any change in VOLT, CURR, FREQ, PHASE or WAVEFORM. The SYNC OUT setting only affects normal (non-sequence) mode. To set up the SW so that a sync pulse only occurs for a specified sequence segment, set this parameter to OFF.
SW 5250A•SW 3500A•SW 1750A 7 Operation !0= % ! The SYSTEM COMM (Communications) sub-menu allows you to: • Configure the GPIB address and display remote status. • Display firmware version information. SYSTEM OUTPUT [OFF] USER GPIB ADDR COMM EXTERNAL ECDI VER DWSB VER TMB VER FAULTS BAUD RATE CONFIG DWSB ON-LINE T&MB ON-LINE 25 X.XX X.XX X.XX 57600 The DWSB and T&MB fields indicate the internal communication status of the Digital Waveform Synthesis board and Test and Measurement board.
Operation SW 5250A•SW 3500A•SW 1750A 7 < !0= % ! The SYSTEM EXTERNAL sub-menu allows you to: • Select external modes of operation (Direct Input, External Modulation, External Gain, and Clock/Lock). • Select alternate compensation (X-LOAD). • Select Low Frequency for operation below 40 Hz when using an external input. > Damage to the equipment may occur if input frequency requirements are violated (DC, 40–5000 Hz). Refer to Table 2-3 for external analog inputs (EXT_IN_A, EXT_IN_B, EXT_IN_C).
SW 5250A•SW 3500A•SW 1750A Operation EXT MOD (External Amplitude Modulation) Amplitude modulation of an output waveform is possible via an input signal from the rear panel. Input of 0-5 Vrms corresponds to a modulation of 0-20%. To allow for the modulation voltage, the maximum programmed voltage is 130 Vrms in low range, and 260 Vrms in high range. DIR INPUT (External Direct Input) Input on rear panel allows reference signal to go directly to amplifiers. A signal of 0–5 Vrms (±7.
Operation 7 SW 5250A•SW 3500A•SW 1750A !0= % ! Pressing to select FAULTS will display a list of logged fault conditions LOG1 LOG6. These are three 8-bit registers used to troubleshoot errors that cause the system to shut down. Fault register definitions are available through the Help screens of the SmartWave unit.
SW 5250A•SW 3500A•SW 1750A Operation Although the DFI Fault is not included in the fault history log, any of the faults will cause a DFI error to occur. When a DFI fault is tripped, either because one of the faults above or a fault external to the SW, the output relay is opened, VPROGRAM is set to zero, and an error message is displayed. F3:OV Indicates that the internal DC bus has pumped up to a hazardous level (due to sinking power rather than sourcing, i.e.
Operation SW 5250A•SW 3500A•SW 1750A F4:OT Monitors power stage heat sink temperatures. Action: Opens relays, displays error message for 30 seconds, then shuts off SW system. F2:OV Indicates that the internal DC bus has pumped up to an unacceptable level (due to sinking power rather than sourcing, i.e., attempting to discharge a very large capacitor into the SW output too quickly). Action: SW system tristates output amplifier until bus level becomes normal.
SW 5250A•SW 3500A•SW 1750A 7- Operation !0= % ! Pressing to select CONFIG will display the System Configuration options. BOOST - Allows the Servo Boost circuit to be disabled during non-sequence operation. This option is important when running a sequence at low voltage levels. See Section 1.12.2, Servo Boost, for a full explanation of the Boost function. The factory default state is Boost ON.
Operation SW 5250A•SW 3500A•SW 1750A ' %+ • 3 '* * # 3 ,% # ( When programming an amplitude in the Program Menu, Sequence Edit Menu, or remotely over the GPIB, the Amplitude field is checked against the Function (Waveform) field for positive or negative amplitude; that is, the function polarity is used to validate the amplitude input value. For example, programming -100V when a DC+ waveform is selected will result in an execution error.
SW 5250A•SW 3500A•SW 1750A - ' %+ ! % Operation 3 '* * # 3 ?% "#(%( !(2 ?'* $+% This example illustrates programming the SW to simulate a current inrush waveform that is 0V between 0° and 90°, then instantaneously jumps from 0V to 120V at 90°. 1. At the MAIN MENU, use either the Knob or the Up/Down Arrow keys to select the WAVEFORM menu, then either press the Enter key or the Right Arrow key. 2. The WAVEFORM Menu will default to the LOAD sub-menu.
Operation SW 5250A•SW 3500A•SW 1750A WAVEFORM OUTPUT [OFF] LOAD FREQ 60.00 Hz EDIT Vrms 120.00 V VIEW START 0.00 Deg SAVE TIME 4.17 ms DELETE STOP 90.00 Deg AMPL 0.00 V 9. Use either the Knob or the Up/Down Arrow keys to select FREQ. The frequency is normally defaulted at 60 Hz with all other values set to 0. On the keypad, enter 6, 0, decimal point, 0, 0, then press to set the frequency to 60.00 Hz. 10. Use either the Knob or the Up/Down Arrow keys to select Vrms.
SW 5250A•SW 3500A•SW 1750A 15. Operation Select VIEW, then press to view the waveform. A waveform similar to the one illustrated below should be displayed on the LCD. WAVEFORM OUTPUT [OFF] 2 2 1 0 2 2 1 90 16. 17. 180 270 To display the waveform on the front panel phase A output: a. Return to the MAIN MENU by pressing
Operation 18. 19. 20. 3-36 SW 5250A•SW 3500A•SW 1750A While still in the PHASE A sub-menu: a. Select AMPL (amplitude) with the Knob or Arrow Keys. b. Enter 120 with the keypad to set the amplitude at 120 volts, then press . The inrush waveform will now be displayed on Phase A output on the front panel. While still in the PROGRAM mode: a. Select PHASE B by cursoring to Phase A, then press . b.
SW 5250A•SW 3500A•SW 1750A - Operation +'3% $#4% ?'* $+% This example illustrates programming the SW for a voltage spike on a 150V sine waveform that starts at 30° and ends at 50° with an amplitude of 220.6 volts. MAIN MENU OUTPUT [OFF] PROGRAM MEASURE WAVEFORM SEQUENCE INSTR SYSTEM 1. At the MAIN MENU, select the WAVEFORM menu, then press . WAVEFORM OUTPUT [OFF] LOAD EDIT VIEW SAVE DELETE 2. The WAVEFORM Menu will default to the LOAD sub-menu.
Operation SW 5250A•SW 3500A•SW 1750A WAVEFORM LOAD OUTPUT [OFF] FUNC Sine EDIT VIEW SAVE DELETE Displays library of waveforms 6. Press to load the sine waveshape into scratchpad memory. The message, [waveform successfully loaded], will indicate that the waveform is now in scratchpad memory. 7. Press
SW 5250A•SW 3500A•SW 1750A Operation 10. Select START. Enter 30 using the keypad, then press to set the starting phase angle to 30°. 11. Select STOP. Enter 50 using the keypad for an ending phase angle of 50°, then press . Note that the instrument automatically calculates the TIME (in this case, 0.93 ms). 12. Select AMPL. Enter 220.6, then press to set the amplitude to 220.6V. 13. Press
Operation 15. SW 5250A•SW 3500A•SW 1750A To retain the waveshape and display it on Phase A output on the front panel: a. Return to the MAIN MENU by pressing
SW 5250A•SW 3500A•SW 1750A - +'3% $ ! Operation ?'* $+% This example illustrates programming the SW for a voltage dropout on a 120V sine waveform that starts at 45° with a duration of 1 millisecond and an amplitude of 10 volts. MAIN MENU OUTPUT [OFF] PROGRAM MEASURE WAVEFORM SEQUENCE INSTR SYSTEM 1. At the MAIN MENU, select the WAVEFORM menu, then press . WAVEFORM OUTPUT [OFF] LOAD EDIT VIEW SAVE DELETE 2. The WAVEFORM Menu will default to the LOAD sub-menu.
Operation SW 5250A•SW 3500A•SW 1750A WAVEFORM LOAD OUTPUT [OFF] FUNC Sine EDIT VIEW SAVE DELETE Displays library of waveforms 6. Press to load the sine waveshape into scratchpad memory. The message, [waveform successfully loaded], will indicate that the waveform is now in scratchpad memory. 7. Press
SW 5250A•SW 3500A•SW 1750A Operation 10. Select START. Using the keypad, enter 45, then press to set the starting phase angle to 45°. 11. Select TIME, enter 1 for a duration of 1 millisecond, then press . Note that the instrument automatically calculates the STOP phase angle value (in this case, 66.6°). 12. Select AMPL, enter 10 for 10 volts, then press . 13. Press
Operation 15. SW 5250A•SW 3500A•SW 1750A To retain the waveshape and display it on Phase A of the oscilloscope: a. Return to the MAIN MENU by pressing
The following standard waveforms are provided in the SW Series: D Clip0 A sine wave with the positive halfcycle clipped at 0V from 50 to 130° 1.0 40-5000 Hz ClipPos A sine wave with the positive halfcycle clipped from 50 to 130° 1.0 40-5000 Hz ClipNeg A sine wave with the positive halfcycle set to a 50% negative value from 50 to 130° 1.0 40-5000 Hz DC+ Used to operate the SW as a positive DC source (true rms) 0.7071 N/A DC- Used to operate the SW as a negative DC source (true rms) 0.
Standard Waveforms SW 5250A•SW 3500A•SW 1750A D FlatTp15 Flat-top sine wave with 15% distortion (true rms) 0.8545 40-5000 Hz FlatTp20 Flat-top sine wave with 20% distortion (true rms) 0.8251 40-5000 Hz Four3 Fourier square wave with 1st and 3rd harmonics (true rms) 0.8946 40-5000 Hz Four5 Fourier square wave with 1st, 3rd, and 5th harmonics (true rms) 0.8703 40-5000 Hz Four7 Fourier square wave with 1st, 3rd, 5th, and 7th harmonics (true rms) 0.
SW 5250A•SW 3500A•SW 1750A Standard Waveforms D Spike250 Sine with spikes at peaks. Spikes are from 85 to 95° and calibrated to be 250Vpeak when programmed to 120Vrms 1.4731 40-5000 Hz Spike300 Sine with spikes at peaks. Spikes are from 85 to 95° and calibrated to be 300Vpeak when programmed to 120Vrms 1.7678 40-5000 Hz Spike400 Sine with spikes at peaks. Spikes are from 85 to 95° and calibrated to be 400Vpeak when programmed to 120Vrms 2.
Standard Waveforms SW 5250A•SW 3500A•SW 1750A This page intentionally left blank.
