SmartWave™ Switching Amplifier Operation Manual This manual covers models: SW 5550AE SW 3700AE SW 1850AE Contact Information Telephone: 800 733 5427 (toll free in North America) 858 450 0085 (direct) Fax: 858 458 0267 Email: Domestic Sales: domorders.sd@ametek.com International Sales: intlorders.sd@ametek.com Customer Service: service.ppd@ametek.com Web: www.programmablepower.com March 2011 Document No.
About AMETEK AMETEK Programmable Power, Inc., a Division of AMETEK, Inc., is a global leader in the design and manufacture of precision, programmable power supplies for R&D, test and measurement, process control, power bus simulation and power conditioning applications across diverse industrial segments. From bench top supplies to rack-mounted industrial power subsystems, AMETEK Programmable Power is the proud manufacturer of Elgar, Sorensen, California Instruments and Power Ten brand power supplies.
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Important Safety Instructions Before applying power to the system, verify that your product is configured properly for your particular application. Hazardous voltages may be present when covers are removed. Qualified personnel must use extreme caution when servicing this equipment. Circuit boards, test points, and output voltages also may be floating above WARNING (below) chassis ground. The equipment used contains ESD sensitive ports. When installing equipment, follow ESD Safety Procedures.
Product Family: SW 5550AE, SW 3700AE, SW 1850AE Warranty Period: One Year WARRANTY TERMS AMETEK Programmable Power, Inc.
CONTENTS SECTION 1 GENERAL DESCRIPTION 1.1 Introduction .................................................................................................... 1-1 1.2 Input Specifications ....................................................................................... 1-2 1.3 Output Specifications: IEC Test Modes ......................................................... 1-3 1.4 Waveform Specifications ............................................................................... 1-4 1.
SW 5550AE • SW 3700AE • SW 1850AE Contents 2.7 2.8 2.9 2.10 Input/Output Connectors ................................................................................ 2-6 2.7.1 BNC Connectors ................................................................................ 2-7 2.7.2 EXT IN (External Input)...................................................................... 2-7 2.7.3 DFI (Direct Fault Indicator) ................................................................ 2-8 2.7.4 IEEE 488.
SW 5550AE • SW 3700AE • SW 1850AE Contents SECTION 4 STANDARD WAVEFORMS LIST OF TABLES Table 2–1 Recommended Mounting Slide .................................................................. 2-3 Table 2–2 SW Input/Output Connectors .................................................................... 2-6 Table 2–3 EXT IN Connector Pinout........................................................................... 2-7 Table 2–4 DFI Connector Pinout .............................................................
Contents SW 5550AE • SW 3700AE • SW 1850AE LIST OF FIGURES Figure 1–1 Elgar Model SW 5550AE 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 ................................
SECTION 1 GENERAL DESCRIPTION 1.1 Introduction The Elgar SmartWaveTM Models SW 5550AE, SW 3700AE, and SW 1850AE use transformerless, direct coupled amplifiers with very low, uniform output impedance. Additionally, the controller allows for programmable output impedance and the injection of interharmonic signals.
General Description SW 5550AE • SW 3700AE • SW 1850AE Programming is accomplished at the front panel or with a personal computer (PC) using optional software. A GPIB card in the computer is also required. A library of 25 factory-supplied waveshapes is provided in Flash Memory. Non-volatile memory storage is available for an additional 50 user-created waveshapes.
SW 5550AE • SW 3700AE • SW 1850AE 1.3 General Description Output Specifications: IEC Test Modes* Calibration Interval: 1 year. Power Factor of Load: 0 lagging to 0 leading. AC or DC Output Voltage: 0 to 156 VRMS L-N range 1; 0 to 312 VRMS L-N range 2. Output Current Per Phase: 16A to 115V in 156V range; 8A to 230V in 312V range (1850 VA maximum). Crest Factor: 3.25 (peak output current to RMS output current).
General Description SW 5550AE • SW 3700AE • SW 1850AE Phase Accuracy, Phase-to-Phase Balanced Linear Resistive Load: ±1º, 40 to 500 Hz. Phase Angle Resolution: 0.1º. Remote Output Voltage Sense: 5 VRMS total lead drop, maximum. Output Impedance: 1850, 1 Phase, 312V Range: Low Impedance Mode: Less than 0.07+j0.05 (at 50 Hz) Reference Impedance Mode: (0.40+j0.25) ± 3.0% (at 50 Hz) 3700, 1 Phase, 312V Range: Low Impedance Mode: Less than 0.05+j0.04 (at 50 Hz) Reference Impedance Mode: (0.40+j0.25) ± 3.
SW 5550AE • SW 3700AE • SW 1850AE 1.5 General Description Interharmonics Waveform Generator (Optional) Interharmonic output will be combined with Phase A, B, and C outputs. Phase Outputs will be referred to as the Fundamental Output. The specifications below apply only to Output Range 2, 312 VRMS: Reference: IEC 1000-4-13 Low Frequency Phenomena Frequency Range: 15 Hz to 3000 Hz Frequency Accuracy: 0.5% of interharmonic output Frequency Resolution: 0.
General Description 1.7 SW 5550AE • SW 3700AE • SW 1850AE Agency Requirements The SmartWave is designed to meet the following agency requirements: UL 3111 CUL 1010 EN 61010 EN 50081-2 EN 50082-1 IEC 1000-3-2, Annex A, Supply Source IEC 725 Reference Impedance IEC 801-2, -3 and -4 IEC 1000-4-13, Interharmonics Waveform Generator FCC Part 15, Class A 1.8 Physical Specifications (All Models) Height: 8.75" (222 mm) Width: 19" (483 mm) Depth: 23.5" (597 mm) Weight: SW 5550AE: 126.5 lbs. (57.
SW 5550AE • SW 3700AE • SW 1850AE General Description 1.10 Other Standard Features 1- to 3-Phase Programmable IEEE 488.2 Interface SCPI Protocol Waveform Trigger Output (1 Meg Load Drive; positive edge is at 0° ±30 s, 0 to 5V logic) BNC Outputs for Waveform Viewing (1 Meg Load Drive, 1.25 VRMS = Full Scale) SYNC OUT. User programmed for: Cycle Start, all cycles Segment Start. all segments Segment Start, selected segments For loads 2 k : Vout 1V Low State; Vout 2.
General Description SW 5550AE • SW 3700AE • SW 1850AE External Amplitude Modulation 0 to 5 VRMS provides 0 to 20% output amplitude modulation (±2% of full scale output). External Direct Input Normal Amplifier, 0 to 5 VRMS (DC to 500 Hz) or ±5 VDC input for zero to full scale programmed voltage output (±2% of full scale output). 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 k .
SW 5550AE • SW 3700AE • SW 1850AE General Description 1.12 Glossary of Technical Terms 1.12.1 IEC Test Modes The SWAE product line is designed as a supply source for IEC testing. The power ON defaults to the low impedance mode, 50 Hz, 312V range. On the System External menu, this corresponds to the LOW FREQ menu item set to ON. To select the reference impedance mode, set both LOW FREQ and FLICKER to ON. Output impedance (and load regulation) are defined by the particular mode selected.
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SECTION 2 INSTALLATION 2.1 Introduction The Elgar Model SW 5550AE, SW 3700AE, or SW 1850AE has been fully calibrated and tested prior to shipment. The instrument is ready for immediate use upon receipt. WARNING! The SmartWave unit weighs 73–126.5 lbs. (33.1–57.2 kg), depending on the model. A minimum two–person lift is required! WARNING! Hazardous voltages are present when operating this equipment.
SW 5550AE • SW 3700AE • SW 1850AE Installation 2.3 Pre-Installation Inspection 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. 2.4 Installation 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.
SW 5550AE • SW 3700AE • SW 1850AE TYPE Mounting Kit (for slides) Slides Installation MANUFACTURER PART NUMBER Jonathan Accuride BK-3 C-3307-16D Table 2–1 Recommended Mounting Slide 2.6 Installation/Dimensional Drawing 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 5550AE • SW 3700AE • SW 1850AE Figure 2–2 Mounting Dimensions, SmartWave Top and Side Views 2-4 Operation Manual
SW 5550AE • SW 3700AE • SW 1850AE Installation Figure 2–3 SmartWave Rear Panel Operation Manual 2-5
SW 5550AE • SW 3700AE • SW 1850AE Installation 2.7 Input/Output Connectors 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. NOTE: The RS232 AND AUX OUT connectors (Figure 2–3, Items 4 and 8, respectively) are Elgar proprietary; thus, the pinouts will not be provided. ITEM # NAME TYPE MANUFACTURER / PART # 1 SYNC OUT BNC KINGS, PN KC-79-179 2 CLOCK & LOCK BNC KINGS, PN KC-79-179 3 EXT IN ±7.
SW 5550AE • SW 3700AE • SW 1850AE 2.7.1 Installation BNC Connectors The diagram below illustrates the signal and return connections. Refer to Figure 2–3, Items 1 and 2. 2.7.2 EXT IN (External Input) Refer to Figure 2–3, Item 3. PIN # MNEMONIC LEVEL 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 500 Hz, 30 k 11 EXT_IN_B ±7.25 Vpeak DC to 500 Hz, 30 k 12 EXT_IN_C ±7.
SW 5550AE • SW 3700AE • SW 1850AE Installation 2.7.3 DFI (Direct Fault Indicator) 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 5550AE • SW 3700AE • SW 1850AE 2.7.4 Installation IEEE 488.2 Refer to Figure 2–3, Item 6. PIN # MNEMONIC PIN # MNEMONIC PIN # MNEMONIC 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.
SW 5550AE • SW 3700AE • SW 1850AE Installation 2.7.6 Grounding 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. 2.8 Input Power Requirements Input power is connected to the SW 5550AE, SW 3700AE, or SW 1850AE via the rear panel connectors. See Table 2–7 and Table 2–8 for input current values.
SW 5550AE • SW 3700AE • SW 1850AE Installation MAXIMUM LINE CURRENT MAXIMUM NEUTRAL CURRENT F1-F3 FUSE RATING RECOMMENDED CIRCUIT BREAKER RATING (MAX.
Installation 2.8.1 SW 5550AE • SW 3700AE • SW 1850AE 187 to 264 VRMS 3-Phase Operation (3-Wire USA) 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. 2.8.
SW 5550AE • SW 3700AE • SW 1850AE 2.9 2.9.1 Installation Output Connections to the Load SW 5550AE Output Connections The Model SW 5550AE 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 5550AE • SW 3700AE • SW 1850AE Figure 2–4 Parallel Connections Figure 2–5 Sense Lead Connections for 3-Phase Output 2-14 Operation Manual
SW 5550AE • SW 3700AE • SW 1850AE 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. 2.9.
SW 5550AE • SW 3700AE • SW 1850AE Installation 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 5550AE • SW 3700AE • SW 1850AE 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.
SW 5550AE • SW 3700AE • SW 1850AE Installation 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.
SECTION 3 OPERATION 3.1 Introduction 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. 3.2 Front Panel Controls 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.
SW 5550AE • SW 3700AE • SW 1850AE Operation 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 5550AE • SW 3700AE • SW 1850AE 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.
SW 5550AE • SW 3700AE • SW 1850AE Operation 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. 3.3.
SW 5550AE • SW 3700AE • SW 1850AE 3.3.2 Operation PROGRAM Menu The PROGRAM menu allows you to: Select a phase Program amplitude–function polarity validates the amplitude input, see Section 3.4 for more information Program current limit, either value or level Program frequency–maximum frequency is determined by the selected waveforms for each phase, see Section 3.
SW 5550AE • SW 3700AE • SW 1850AE Operation * There is only one frequency setting for all three phases. Changing the frequency of one phase changes the frequency for all phases. ** To operate the SW as a DC supply, select the function as ―DC+‖ or ―DC-‖ for positive and negative DC. ―AC+DC Coupling‖ must also be selected from the INSTRUMENT menu. The AMPL field is programmed to 0V as a precaution when changing to or from the ―DC+‖ or ―DC-‖ function. 3.3.2.
SW 5550AE • SW 3700AE • SW 1850AE 3.3.2.2 Operation Front Panel Store/Recall The current state of the SW can be saved and restored using the Front Panel Store/Recall feature.
SW 5550AE • SW 3700AE • SW 1850AE Operation 3.3.3 MEASURE Menu The MEASURE menu is unavailable on the SW 5550AE, SW 3700AE, and SW 1850AE models. 3.3.4 WAVEFORM Menu 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.
SW 5550AE • SW 3700AE • SW 1850AE 3.3.4.1 Operation LOAD Sub-Menu 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 5550AE • SW 3700AE • SW 1850AE Operation 3.3.4.2 EDIT Sub-Menu The WAVEFORM menu allows you to EDIT a waveform in the scratchpad.
SW 5550AE • SW 3700AE • SW 1850AE 3.3.4.3 Operation VIEW Sub-Menu 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.
SW 5550AE • SW 3700AE • SW 1850AE Operation 3.3.4.4 SAVE Sub-Menu 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.
SW 5550AE • SW 3700AE • SW 1850AE 3.3.4.5 Operation DELETE Sub-Menu 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 5550AE • SW 3700AE • SW 1850AE Operation 3.3.5 SEQUENCE Menu The SEQUENCE menu allows you to create, edit, and execute a sequence. SEQ MENU OUTPUT [OFF] LOAD EDIT SAVE DELETE EXECUTE 3.3.5.1 LOAD Sub-Menu 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.
SW 5550AE • SW 3700AE • SW 1850AE 3.3.5.2 Operation EDIT Sub-Menu 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 ms FUNC ANGL A 0.00 Sine 0.00 B 0.00 Sine 120.00 C 0.00 Sine 240.
Operation SW 5550AE • SW 3700AE • SW 1850AE the ramp. The SW will calculate an even number of voltage or frequency steps, over the time period of the current segment (value specified in the Time field), to reach the values specified in the following segment. 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.
SW 5550AE • SW 3700AE • SW 1850AE Operation 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 5550AE • SW 3700AE • SW 1850AE Operation NOTE: You can save up to 100 sequences, consisting of up to 1000 segments total. Once you have reached this maximum, you must delete a previously saved sequence in order to save a new one. SAVE Sub-Menu Status and Information Data: Menu Item Status and Information Line NAME [–> = next char, <– = backsp] SAVE [store sequence in library] 3.3.5.4 DELETE Sub-Menu The SEQUENCE menu allows you to DELETE a sequence stored in non-volatile memory.
SW 5550AE • SW 3700AE • SW 1850AE 3.3.5.5 Operation EXECUTE Sub-Menu 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.
Operation SELECTION SW 5550AE • SW 3700AE • SW 1850AE PURPOSE LOAD SEQ Loads a sequence 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. SYNC Configures the SYNC Trigger output to generate a pulse for every segment or only selected segments.
SW 5550AE • SW 3700AE • SW 1850AE 3.3.6 Operation INSTR (Instrument) Menu The INSTR menu allows you to: Set the output range (156 or 312 volts). Select either AC or AC+DC coupling. Select the peak overvoltage limit. Select shutdown, foldback, or time-out mode (foldback for the time specified in the ITIMO field then shutdown mode). Select the time for the time-out mode. Select amplifier parallel operation. When the Parallel mode is ON, only Phase A will appear in the Program menu.
SW 5550AE • SW 3700AE • SW 1850AE Operation 3.3.7 SYSTEM Menu 3.3.7.1 USER Sub-Menu 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).
SW 5550AE • SW 3700AE • SW 1850AE Operation 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 5550AE • SW 3700AE • SW 1850AE Operation 3.3.7.2 COMM Sub-Menu 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 25 COMM EXTERNAL ECDI VER DWSB VER IWG VER X.XX X.XX X.
SW 5550AE • SW 3700AE • SW 1850AE 3.3.7.3 Operation EXTERNAL Sub-Menu The SYSTEM EXTERNAL sub-menu allows you to: Select external modes of operation (Direct Input, External Modulation, External Gain, and Clock/Lock). Select Flicker mode (reference impedance). Select Low Frequency ON to disable the RMS Voltage Servo (normal IEC test mode). CAUTION! Damage to the equipment may occur if input frequency requirements are violated (DC, 40–500 Hz).
SW 5550AE • SW 3700AE • SW 1850AE Operation SELECTION PURPOSE 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 0-20% modulation. 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.
SW 5550AE • SW 3700AE • SW 1850AE 3.3.7.4 Operation FAULTS Sub-Menu Pressing to select FAULTS will display a list of logged fault conditions LOG1 through 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 5550AE • SW 3700AE • SW 1850AE 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. FAULT REGISTER 1 F3_OV Indicates that the internal DC bus has pumped up to a hazardous level (due to sinking power rather than sourcing, i.e.
SW 5550AE • SW 3700AE • SW 1850AE Operation FAULT REGISTER 2 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 5550AE • SW 3700AE • SW 1850AE Operation 3.3.7.5 CONFIG Sub-Menu 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 should be set to OFF when: The RMS Servo is ON (Low Frequency = OFF) and Sequence mode is being used with Exit mode set to ―Program Menu.‖ RESET CAL – Resets calibration constants to default values. Enter a confirmation code (2096) to activate this option.
SW 5550AE • SW 3700AE • SW 1850AE 3.4 Operation Front Panel Programming Conventions 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 5550AE • SW 3700AE • SW 1850AE Operation 3.5 Front Panel Programming Exercise The following 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.
SW 5550AE • SW 3700AE • SW 1850AE 5. Operation Use the Knob to cycle through the waveshape selections until SINE appears in the FUNC box. 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 5550AE • SW 3700AE • SW 1850AE Operation 9. Select Vrms. Enter 120, then press to set the RMS voltage to 120 volts. 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.
SW 5550AE • SW 3700AE • SW 1850AE 15. To retain the waveshape and display it on Phase A of the oscilloscope: a. Return to the MAIN MENU by pressing
Operation 3.6 SW 5550AE • SW 3700AE • SW 1850AE SCPI Specification Refer to the SmartWave™ Switching Amplifier SCPI Programming Manual (Elgar Document No. M162000-03).
SECTION 4 STANDARD WAVEFORMS The following standard waveforms are provided in the SW Series: NAME DESCRIPTION SCALE FACTOR FREQUENCY RANGE DC+ Used to operate the SW as a positive DC source (true rms) 0.7071 40-500 Hz DC- Used to operate the SW as a negative DC source (true rms) 0.7071 40-500 Hz +DC with 3% ripple. Frequency of the ripple is DcRip03+ determined by the programmed output frequency (true rms) 0.7071 40-500 Hz -DC with 3% ripple.
SW 5550AE • SW 3700AE • SW 1850AE Standard Waveforms NAME DESCRIPTION SCALE FACTOR FREQUENCY RANGE Four7 Fourier square wave with 1st, 3rd, 5th and 7th harmonics (true rms) 0.8595 40-63 Hz Four9 Fourier square wave with 1st, 3rd, 5th, 7th and 9th harmonics (true rms) 0.8537 40-63 Hz Scratch Waveform scratchpad. This is the waveform edit work area. Waveforms being edited can be output for testing purposes before they are saved to nonvolatile memory. 1.
