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TrueWave AC Power Source Models TW5250 • TW3500 • TW1750 Operation Manual 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...
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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.
Neither AMETEK Programmable Power Inc., San Diego, California, USA, nor any of the subsidiary sales organizations can accept any responsibility for personnel, material or inconsequential injury, loss or damage that results from improper use of the equipment and accessories.
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AMETEK will, at its expense, deliver the repaired or replaced Product or parts to the Buyer. Any warranty of AMETEK will not apply if the Buyer is in default under the Purchase Order Agreement or where the Product or any part...
TABLE OF CONTENTS Warranty ........................i Safety Notice.........................iii Safety Symbols ......................iv SECTION 1 – GENERAL DESCRIPTION Introduction....................... 1-1 Input Specifications ..................1-2 Output Specifications..................1-2 Front Panel Display ..................1-4 GPIB and RS-232 Readback................1-5 Measurements....................1-6 1.6.1 Parameters Measured ................1-6 Protection and Safety ..................
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Table of Contents TW 5250 • TW 3500 • TW 1750 Input Power Requirements................2-9 2.8.1 187 to 264 VRMS 3-Phase Operation (3-Wire USA) ......2-11 2.8.2 342 to 457 VRMS 3-Phase Operation (4-Wire INTL) ......2-11 2.8.3 Single-Phase Input Connections ............2-11 Output Connections to the Load ..............
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TW 5250 • TW 3500 • TW 1750 Table of Contents 3.10.13 Recall a Machine State..............3-19 3.10.14 Recall Factory Configuration ............3-19 3.10.15 Specify LOCAL Sense..............3-20 3.10.16 Specify REMOTE Sense ..............3-20 3.10.17 Place TW into PLL Lock Mode ............3-21 3.10.18 Program Sync Connector to Send a Pulse at Phase A Zero Crossing ..............
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Table of Contents TW 5250 • TW 3500 • TW 1750 LIST OF FIGURES Figure 1-1 Elgar TrueWave AC Power Source............1-1 Figure 2-1 Mounting Dimensions, Front View............2-3 Figure 2-2 Mounting Dimensions, Top and Side View........... 2-4 Figure 2-3 Rear Panel ...................
SECTION 1 GENERAL DESCRIPTION 1.1 INTRODUCTION The Elgar TrueWaveϑ Models TW 5250, TW 3500, and TW 1750 use transformerless, direct coupled amplifiers and a DSP-based sine wave controller for testing a variety of complex electronics. Figure 1-1 Elgar TrueWave AC Power Source ( Rack Mount Version) Programming is accomplished at the front panel or with a personal computer (PC).
General Description TW 5250 • TW 3500 • TW 1750 of 4.0 provides high peak-to-RMS current capability. An optional input power factor correction (PFC) of .99 is also available. 1.2 INPUT SPECIFICATIONS 187 to 264 VRMS, 3Ø L-L (3 wire), or 342 to 457 VRMS, Voltage 3Ø...
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TW 5250 • TW 3500 • TW 1750 General Description 0.1% maximum of full scale. Voltage Programming Accuracy (GPIB/ Front panel) without load 0.03% VRMS maximum (12 bits). Voltage Programming Resolution (GPIB/ Front panel) 2% of full scale. Voltage Programming Accuracy (Analog) 0.1% maximum with constant line, load, Voltage Stability, excluding...
General Description TW 5250 • TW 3500 • TW 1750 0.15% maximum of full scale Load Voltage Regulation 5 VRMS total (sum of both lead drops) Lead drop 4.0 minimum Current Crest Factor 45 to 500 Hz minimum Frequency Range 100 ppm maximum of programmed value per ºC Frequency Drift 0.1% maximum of programmed value...
TW 5250 • TW 3500 • TW 1750 General Description 0.3% of full scale + 0.5% of reading maximum Output Current Accuracy 0.01 Amps RMS maximum Output Current Resolution 0 to 1900 W per phase minimum Output Power Range 2.5% of full scale maximum Output Power Accuracy 10 W maximum Output Power Resolution...
TW 5250 • TW 3500 • TW 1750 General Description 1.8 AGENCY REQUIREMENTS The TrueWave conforms to the following agency requirements: • European Community CE, including: EN61010-1 1993 EN55011 Group 1, Class A EN50082-21995 • FCC Part 15, Class A 1.9 PHYSICAL SPECIFICATIONS (All Models) Height: 8.75"...
TW 5250 • TW 3500 • TW 1750 General Description • 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).
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General Description TW 5250 • TW 3500 • TW 1750 This page intentionally left blank. 1-10 Elgar TrueWave...
SECTION 2 INSTALLATION 2.1 INTRODUCTION The Elgar Model TW 5250, TW 3500, or TW 1750 has been fully calibrated and tested prior to shipment. The instrument is ready for immediate use upon receipt. WARNING! The TrueWave unit weighs 63–115 lbs. (28–52 kg), depending on the model.
Installation TW 5250 • TW 3500 • TW 1750 2.4 INSTALLATION The TrueWave unit is 8.75" (222 mm) high and designed to be installed in a standard 19" (483 mm) RETMA rack or a transit case; pem-nuts are provided for mounting optional slides.
TW 5250 • TW 3500 • TW 1750 Installation 2.6 INSTALLATION/ DIMENSIONAL DRAWINGS Refer to Figure 2-1 and Figure 2-2 for information on outline and mounting dimensions of the unit. Refer to Figure 2-3 and Table 2-2 through Table 2-5 for information on rear panel connectors.
Installation TW 5250 • TW 3500 • TW 1750 2.7 INPUT/ OUTPUT CONNECTORS Table 2-2 provides a listing of the TW input and output connectors and other data. Table 2-3 through Table 2-6 provide specific pinout information. NOTE: The slave connection (Figure 2-3, Item 7) is not intended for user interfacing. ITEM # NAME TYPE MANUFACTURER / PART #...
TW 5250 • TW 3500 • TW 1750 Installation 2.7.1 BNC CONNECTORS The diagram below illustrates the signal and return connections. Refer to Figure 2-3, Items 1 and 2. 2.7.2 DFI (DISCRETE 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 TW.
TW 5250 • TW 3500 • TW 1750 Installation 2.7.5 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.
TW 5250 • TW 3500 • TW 1750 Installation 2.8.1 187 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 2-6.
Installation TW 5250 • TW 3500 • TW 1750 2.9 OUTPUT CONNECTIONS TO THE LOAD 2.9.1 TW 5250 OUTPUT CONNECTIONS The Model TW 5250 can power 1-phase, 2-phase and 3-phase loads. Local or remote sensing can be used. If local sense is desired, for best regulation, jumper Sense A to Output A, Sense B to Output B, etc.
Installation TW 5250 • TW 3500 • TW 1750 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.
TW 5250 • TW 3500 • TW 1750 Installation 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 that may be up to ten times the average values. An underrated wire gauge adds losses that alter the inrush characteristics of the application and thus the expected performance.
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Installation TW 5250 • TW 3500 • TW 1750 The formula below determines which ohms/100 feet entry is required from Column 3. Read the corresponding wire gauge from Column 1. (Column 3 value) = x 0.02 x (cable length)] loss peak Where: Column 3 value =...
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TW 5250 • TW 3500 • TW 1750 Installation Derate the above wire gauge (use a heavier gauge) for an increased number of current carrying conductors. This offsets the thermal rise of bundled conductors. Number of Current Conductors Capability 3 to 6 Above 6 The preferred insulation material is application dependent.
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SECTION 3 OPERATION The TrueWave is programmable via the front panel and through the GPIB/ RS-232 command interface system. The unit is factory configured to power up in standby mode (output relay open) and it will operate in this manner unless it is programmed otherwise. 3.1 PROGRAM PARAMETERS The following parameters are set by quick key combinations on the front panel: •...
Operation TW 5250 • TW 3500 • TW 1750 The TW is controlled through the GPIB interface using the SCPI compatible command language. The RS-232 interface at the rear panel interprets the exact same syntax as the GPIB interface. The RS-232 communication parameters are fixed at: •...
TW 5250 • TW 3500 • TW 1750 Operation When the Hz key is pressed and the Phase A-B LED lights up, the phase angle between phase A and phase B appears in the center display. When the Hz key is pressed and the Phase A-C LED lights up, the phase angle between phase A and phase C appears in the center display.
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Operation TW 5250 • TW 3500 • TW 1750 Use the Prog keys (VOLTAGE, FREQUENCY/PHASE, and CURRENT/POWER) to enter program mode. Any time during programming one parameter type, press one of the other program keys to save the results of the present program operation and shift over to a new program type.
TW 5250 • TW 3500 • TW 1750 Operation If the TW system senses a system fault, the Fault LED lights and the specific fault appears on the TW display. Refer to Appendix A for information on resolving a fault condition.
Operation TW 5250 • TW 3500 • TW 1750 3.7 MENU TREE SYST (Use this menu to set the GPIB address and re-specify a system self-test) SELF TEST PASSED or FAILED PORT GPIB ADDR 25 CONFIG (Use this menu to configure the power-generation parameters of the TW) CURRENT TYPE [SHUT, FOLD] CURR SHUT...
TW 5250 • TW 3500 • TW 1750 Operation STORAGE (Use this menu to save/recall specific setpoint values to/from non-volatile storage) STORE 0 RECALL 0 STARTUP [AUTO,STBY] (Use this menu to specify if the TW will automatically source voltage at power up) INIT RUN INIT STANDBY ACCESS...
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Operation TW 5250 • TW 3500 • TW 1750 CURR FOLD The TW will lower the output voltage (“foldback”) to maintain the current limit set in this mode. SET DELAY (default 100mS) In Current Shutdown mode, this delay specifies how long the TW will foldback before shutdown COUPLING The amplifier(s) utilize AC,DC or AC/DC coupling to specify the TW output...
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TW 5250 • TW 3500 • TW 1750 Operation PHASE A OUT (default) This specifies that the BNC will provide a pulse on each 0 crossing of Phase A TRIG IN This mode provides for the external synchronization of specific events (disturbance).
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Operation TW 5250 • TW 3500 • TW 1750 INSTALLED Specify the quantity of installed amplifiers here INST QTY Sets the quantity of installed amplifiers. STORAGE The setpoints that are specified via the front panel or the command interface (GPIB/serial) are saved and retrieved to EEROM non-volatile memory using the following menu commands: STORE You can save the present TW setup to locations 0-98.
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TW 5250 • TW 3500 • TW 1750 Operation RECALL Read in from locations 0-99. The 99 location is factory defaults: A Volts: 0.0 B Volts: 0.0 C Volts: 0.0 A Volts Offset 0.0 B Volts Offset 0.0 C Volts Offset 0.0 Frequency: 60.0 A Current Limit: 5.0 B Current Limit: 5.0...
Operation TW 5250 • TW 3500 • TW 1750 The TW provides passcode protection to the menu interface. A passcode either can be set or not set. If the code is not set, then the menu can be manipulated and the passcode can be set or cleared.
TW 5250 • TW 3500 • TW 1750 Operation 3.9.2 CLEARING THE PASSWORD Use the Up and Down arrow keys to get to the ACCESS menu command. Press the ENT key to get to the CODE sub-menu. If the NOT SET mode is in effect at this time, the passcode is already cleared.
Operation TW 5250 • TW 3500 • TW 1750 3.10.3 PLACE TW INTO STANDBY MODE AFTER POWER UP Press the Up arrow key until the display reads: STARTUP AUTO Press the Right arrow key. The display will read: STARTUP STBY Press the ENT key.
TW 5250 • TW 3500 • TW 1750 Operation 3.10.5 PLACE FRONT PANEL PROGRAM KEYS INTO ENABLED MODE Press the Up arrow key until the display reads: ACCESS Press the ENT key. Assuming the password is not set, the display will read: CODE NOT SET Press the Up arrow key.
Operation TW 5250 • TW 3500 • TW 1750 3.10.7 PLACE TW INTO ACDC MODE Press the Up arrow key until the display reads: CONFIG Press the ENT key. Press the Up arrow key until the display reads: COUPLING DC or COUPLING Press the Right arrow key until the display reads: COUPLING AC-DC...
TW 5250 • TW 3500 • TW 1750 Operation 3.10.9 SET CURRENT FOLDBACK MODE Press the Up arrow key until the display reads: CONFIG Press the ENT key. Press the Up arrow key until the display reads: CURRENT Press the ENT key. The display will read: TYPE SHUT Press the Right arrow key.
Operation TW 5250 • TW 3500 • TW 1750 3.10.11 SET TW SHUTDOWN TIME VALUE Press the Up arrow key until the display reads: CONFIG Press the ENT key. Press the Up arrow key until the display reads: CURRENT Press the ENT key. The display will read: TYPE FOLD or TYPE SHUT Press the Up arrow key.
TW 5250 • TW 3500 • TW 1750 Operation 3.10.13 RECALL A MACHINE STATE Press the Up arrow key until the display reads: STORAGE Press the ENT key. The display reads: STORE Press the Up arrow key. The display reads: RECALL Either enter a new value in the 0-9 keys followed by the ENT key, or use the Left arrow or Right arrow key to decrement/increment the value followed by the ENT key.
Operation TW 5250 • TW 3500 • TW 1750 3.10.15 SPECIFY LOCAL SENSE Press the Up arrow key until the display reads: CONFIG Press the ENT key. Press the Up arrow key until the display reads: SENSE DIST Press the Right arrow key. The display will read: SENSE LOCAL Press the ENT key.
TW 5250 • TW 3500 • TW 1750 Operation 3.10.17 PLACE TW INTO PLL LOCK MODE Press the Up arrow key until the display reads: CONFIG Press the ENT key. Press the Up arrow key until the display reads: Press the ENT key. Assuming the TW is in Trigger pulse out mode, the display reads: SYNC TRIG O Press the Right arrow key until the display reads:...
Operation TW 5250 • TW 3500 • TW 1750 3.10.19 PROGRAM TW AMP GAINS TO RESPOND TO CONTROL BNC CONNECTOR Press the Up arrow key until the display reads: CONFIG Press the ENT key. Press the Up arrow key until the display reads: Press the ENT key.
TW 5250 • TW 3500 • TW 1750 Operation 3.10.21 PLACE TW INTO PARALLEL AMPLIFIERS MODE Press the Up arrow key until the display reads: CONFIG Press the ENT key. Press the Up arrow key until the display reads: PARALLEL Press the right arrow KEY.
Operation TW 5250 • TW 3500 • TW 1750 REPEAT oooo Re-enter the four-digit code into the 0-9 keys. The display will read: REPEAT - - - - Press the ENT key. The display will read: CODE SET Press ABC/BACK repeatedly to back out of menus and return to readback display mode. 3.10.23 CLEAR PASSWORD Press the Up arrow key until the display reads: ACCESS...
TW 5250 • TW 3500 • TW 1750 Operation 3.11 MASTER/ SLAVE OPERATION 3.11.1 OVERVIEW The TW series power supply provides the capability of being paralleled at the chassis level. If two TW supplies are “chained” (multiple TW units connected in a Master/Slave configuration), the system ampacities are multiplied.
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Operation TW 5250 • TW 3500 • TW 1750 Place the master TW into master mode by either setting the mode up in the menu system or through the SCPI system. SCPI: • If there are two slaves, GPIB Send to the master: SYST:CHASSIS 3 The chassis number counts the master chassis as one of the chassis.
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TW 5250 • TW 3500 • TW 1750 Operation Now turn off the TW while it reads “Sys Restart” or after the display reads “Chained n”. Re-run steps 7 through 9 for each slave, incrementing the slave address each time. The TW unit output and master sense conductors need to junction in one spot at the “load junction terminal strip”.
Operation TW 5250 • TW 3500 • TW 1750 If the output phases are jumpered together as in Figure 3-2, the master must be placed in parallel mode through the SCPI system or through the menu system before the output key is pressed. The TW units are now all controlled via the master SCPI or front panel in the usual manner.
APPENDIX A FAULT OPERATIONS The TW Power Supply may experience various fault states during operation. The possible fault states can be generated by accidental overloading of the TW supply, or system failures within the TW. DSP FAULT 0 DSP INITIALIZATION ERROR This error is reported when the DSP sub-processing system does not boot up.
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Appendix A TW 5250 • TW 3500 • TW 1750 PS A FAULT 3 PHASE 350 V DC BUS OVERVOLT ERROR This error is reported when a given Phase DC internal bus experiences an 350V threshold voltage condition. This error is a run-time recoverable error. From the front panel press the ENTER key.