CW-P SERIES PROGRAMMABLE AC POWER SOURCE Operation Manual This manual covers models: CW 801P CW 1251P CW 2501P CW 801P–H CW 1251P–H CW 2501P–H CW 801P–V CW 1251P–V CW 2501P–V 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 October 2013 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: CW801P, CW1251P, CW2501P, CW801P-H, CW1251P-H, CW2501P-H, CW801P-V, CW1251P-V, CW2501P-V Warranty Period: One Year WARRANTY TERMS AMETEK Programmable Power, Inc.
CONTENTS SECTION 1 INTRODUCTION ............................................................. 0-1 SECTION 2 SPECIFICATIONS .......................................................... 1-1 2.1 Output................................................................................................... 1-1 2.2 Measurement ....................................................................................... 1-3 2.3 Input ....................................................................................
Contents 3.8 3.9 Elgar CW-P Series Remote Control Signal ........................................................................ 2-15 3.8.1 Analog Amplitude Control ........................................................ 2-15 3.8.2 Lock to External Frequency Source ........................................ 2-15 3.8.3 Sync Output Pulse ................................................................... 2-16 Master/Slave Configurations ...............................................................
Elgar CW-P Series Contents 5.3.11 RMS Voltage Loop .................................................................. 4-8 5.3.12 Phase A Offset ........................................................................ 4-8 5.3.13 Phase B Offset ........................................................................ 4-8 5.3.14 Phase C Offset ........................................................................ 4-8 5.3.15 Slave Channel ......................................................................
Contents Elgar CW-P Series LIST OF TABLES Table 3–1 Recommended Wire Gauge Selection Guide............................... 2-2 Table 3–2 Recommended Cables ............................................................... 2-11 Table 6–1 Replacement Fuses......................................................................
SECTION 0 INTRODUCTION Elgar's ContinuousWave™ (CW) Series power sources deliver 800 VA or 1250 VA in a 2U high (3.5 inches), and 2500 VA in a 5.25–inch benchtop or rackmount chassis. Higher power and multiphase can be achieved by paralleling and multiphase interconnection. This requires optional slave cables. The switchmode Power Factor Corrected (PFC) input stage allows a wide range of input voltage and maximizes the power available from a wall outlet.
Introduction Elgar CW-P Series • 1 phase 45 to 500 Hz AC output; 45-1000 Hz with H–Option. Units may be connected in multiphase configuration and/or paralleled for higher powers. (Consult factory for more than two units paralleled.) Multiphase/paralleling cables are optional. • Transformer coupled output with disconnect relays • 0 to 135V and 0 to 270V ranges; 0 to 155V and 0 to 310V ranges with V–Option • CW 801P and CW 1251P versions have universal output socket on front panel.
SECTION 1 SPECIFICATIONS 1.1 Output POWER CW 801P 800 VA CW 1251P 1250 VA CW 2501P 2500 VA Power Factor of Load 0 lag to 0 lead Phase All models single phase output VOLTAGE Ranges 0 to 135 VRMS or 0 to 270 VRMS, user selectable V–Option: 0 to 155 VRMS or 0 to 310 VRMS, user selectable Accuracy ±0.1% of full scale <100 Hz, ±0.2% of full scale ≥100 Hz at >5 VRMS output H–Option: ± 0.3% of full scale >500 Hz Resolution 0.
Specifications Total Harmonic Distortion Elgar CW-P Series 0.65% maximum up to 60 Hz; add 0.05%/10 Hz from 60 Hz to 100 Hz; add 0.4%/100 Hz from >100 Hz H-Option: 0.5%, typical up to 60Hz; add 0.05% from >60Hz to 100Hz; add 0.5%/100Hz from >100Hz up to 3.7%; increasing to 6% at 10% of full-scale voltage, 100% full-scale current, and full-scale frequency Amplitude Stability ±0.05% of full scale over 8 hours at constant line, load and temperature after 15 minute warm-up typical Load Regulation ±0.
Elgar CW-P Series Specifications PHASE Range -359 to +359 degrees Positive phase indicates time lag from reference Accuracy Within 100 microseconds of equivalent angle Resolution 1 degree 1.2 Measurement VOLTAGE Range 0 to 270 VRMS; V–Option: 0 to 310 VRMS Accuracy ±0.1% of range <100 Hz; ±0.2% of range ≥100Hz; at >5 VRMS output; measured at point of remote sense H-Option: ±0.3% of range >500 Hz Resolution 0.1 VRMS CURRENT* Range CW 801P 0 to 6.0 ARMS CW 1251P 0 to 9.
Specifications Elgar CW-P Series PEAK INRUSH CURRENT* (Available in Remote Mode only) Range CW 801P 0 to 25A CW 1251P 0 to 35A CW 2501P 0 to 70A Accuracy ±2% of range, typical; at >2% of RMS current range Resolution 0.1A FREQUENCY Range 45 to 500 Hz H-Option: 45 to 1000 Hz Accuracy ±0.02% of value Resolution of Display 0.
Elgar CW-P Series Specifications POWER FACTOR* Range 0 to 1 Accuracy ±4% of range for linear loads, typical; at >10% of power range Resolution 0.01 CREST FACTOR* Range 0 to 3.5 Accuracy ±5% of range, typical; at 10% of RMS current range Resolution 0.01 1.3 Input VOLTAGE AND FREQUENCY CW 801P 90 to 264 VRMS, 47 to 63 Hz, single-phase CW 1251P 103 to 264 VRMS, 47 to 63 Hz, single-phase CW 2501P 180 to 264 VRMS, 47 to 63 Hz, single-phase CURRENT CW 801P(–H)(–V) 13.
Specifications 1.4 Elgar CW-P Series Protection Overcurrent: Shutdown mode Accuracy: +/- 1% of full scale, for linear loads with current >0.2 ARMS for CW 801P / CW 1251P, >0.4ARMS for CW 2501P Over Voltage: Accuracy: +/-2% of full scale Range: 35-300 VAC; V–Option: 35-344 VAC Over Temperature: Internal monitor Isolation Range: 1.5 500 VRMS between either output terminal and chassis.
Elgar CW-P Series Specifications SHIPPING WEIGHT CW 801P: 55.25 lbs. (25 kg) CW 1251P: 60.25 lbs. (27 kg) CW 2501P: 93.25 lbs.
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SECTION 2 INSTALLATION The Elgar CW series power supply has been fully calibrated and tested prior to shipment. The instrument is ready for immediate use upon receipt. CAUTION! The CW unit weighs from 48 to 86 lbs. (22 to 40 kg), depending on the model. A two–person lift is recommended. WARNING! 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. 2.
Installation 2.2 Elgar CW-P Series Wire Gauge Selection The following guidelines assist in determining the optimum cable specification for your power applications. These guidelines are equally applicable to both DC and low frequency AC (up to 450 Hz) power cabling. The same engineering rules apply whether going into or out of an electrical device. Thus, this guide applies equally to the input cable and output cable for this Elgar instrument and application loads.
Elgar CW-P Series Installation The following notes apply to Table 3–1 and to the power cable definition: 1. The above figures are based upon insulated copper conductors at 25E C (77E 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 4. 5. 6. Elgar CW-P Series Derate the above wire gauge (use a heavier gauge) for higher environmental temperatures since conductor resistance increases with temperature. Temperature Current Capability 40°C 104°F 80% 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. No.
Elgar CW-P Series 2.3 Installation Mounting Instructions Refer to Figure 3–1 through Figure 3–4 for mounting dimensions and other installation information for the CW Series power supplies. The units are equipped with mounting feet for bench top use. They are mounted to the chassis with pem-nuts and may be removed easily for rack mount application. The units are 3.5" and 5.25" (89 mm and 133 mm) high, and are designed to be installed in a standard 19" (483 mm) RETMA rack.
Installation Elgar CW-P Series Figure 3–2 Mounting Dimensions, Front and Rear Views (CW 801P, CW 1251P) 2-6 Operation Manual
Elgar CW-P Series Installation Figure 3–3 Mounting Dimensions, Front and Rear Views (CW 2501P) Operation Manual 2-7
Installation Elgar CW-P Series Figure 3–4 Mounting Dimensions, Top and Side Views (CW 801P and CW 1251P) 2-8 Operation Manual
Elgar CW-P Series Installation Figure 3–5 Mounting Dimensions, Top and Side Views (CW 2501P) Operation Manual 2-9
Installation 2.5 Elgar CW-P Series Power In Connections Connect input power to the INPUT terminal block on the rear panel as specified below. Refer to Figure 3–6. Figure 3–6 Input Power Connections WARNING! For input voltages >120V, do not reverse LINE and NEUT. Reversed connections will result in pulsing noises from the supply. 2.5.1 Single–Phase Supply Connections 1. Remove the protective cover from the terminal block. 2. Route the cables through the strain relief device.
Elgar CW-P Series 2.5.2 Installation Split-Phase Supply Connections 120–0–120V 1. Remove the protective cover from the terminal block. 2. Route the cables through the strain relief device. Refer to Table 3–2 for cable recommendations. 3. Connect NEUT to 120V. 4. Connect LINE to the other 120V. Wiring across the full voltage will allow lower line currents to be used. 5. Reinstall the protective cover on the terminal block. Tighten the strain relief device. 2.5.3 Three–Phase Supply Connections 1.
Installation 2.6 Elgar CW-P Series Power Out Connections 1. Remove the protective cover from the terminal block. 2. A factory jumper has been added to connect NEUTRAL to GROUND. If the front connector requires LINE and NEUTRAL to be reversed, move this jumper to connect LINE to GROUND. See Figure 3–7 below. Most loads require NEUTRAL to be grounded. The factory jumper may be removed if the load has a GROUND or if LINE or NEUTRAL voltages are held to less than 500 VRMS with respect to chassis. 3.
Elgar CW-P Series 2.7 Installation Sense Connections The CW Series unit can be used with or without remote sense leads connected to the load. Where the sense leads (line and neutral sense) are connected determines the point at which the CW output voltage will be precisely regulated. As shipped, the units are configured for local sense operation. This is achieved by connecting shorting jumpers between the sense and AC output terminals of the rear panel output terminal block, as shown in Figure 3–8.
Installation Elgar CW-P Series To utilize remote sensing at the user's load, follow these steps: 1. Remove the protective cover from the terminal block. 2. Route the cables through the strain relief device located above the terminal block. Twisted shielded leads for power and sense leads are recommended for the lowest noise operation. If used, shields should be connected to a CW output terminal block GND ground connector, as shown in Figure 3–9. 3. Disconnect local–sense shorting jumpers.
Elgar CW-P Series 2.8 Installation Remote Control Signal Remote control allows you to set output voltage, lock to an external frequency source, or send out a TTL compatible sync signal. The 9-pin Subminiature-D master/slave connector labeled M/S IN on the rear panel allows you to make the necessary connections for remote control. See Figure 3–10. Pins 1, 2, 3, 6, 7, and 8 of the M/S IN connector provide control signals for multiphase/paralleled systems; do not make any user connections to these pins.
Installation 2.8.3 Elgar CW-P Series Sync Output Pulse • Set direction of Clock to ‘OUT’ (see Section 5.3.9). • Sync can be programmed relative to zero to positive crossing of output sinewave. Waveform amplitude typically 5V. Pulse width typically 10 microseconds. Signal shall start with a zero volt to positive voltage edge, ±100 µS. • Programming range is 0 to 359 degrees of lag. Resolution 1 degree. • Output impedance is typically less than 1k ohm. 2.
Elgar CW-P Series Installation 6. Power up all CW units simultaneously, and ensure that each unit is reporting its address properly on the front panel. 7. Power down all CW units. 8. Connect load wiring as documented below. 9. Connect M/S OUT and M/S IN cables (Elgar PN 890-499-00) between each CW in a daisy chain pattern. 10. Connect master/slave, analog slave cables (Elgar PN 890-497-40) from master to slave, one on each master/slave pair. 11.
Installation Elgar CW-P Series Setup 1–Phase Master/Slave Pair Using Menu System 1. Ensure load wiring is removed from the two CW units. 2. Ensure no master/slave cables are attached to “Analog Slave” connectors on CW units. 3. Ensure no master/slave cables are connected to the “M/S IN “ and “M/S OUT” connectors. 4. Connect the mains wiring to the line terminals. 5. Power up both CW units. 6. On the master CW press the “ENTER/SAVE” button. 7.
Elgar CW-P Series Installation 24. Connect the Elgar cable 890-499-00 between the master “M/S OUT” and the slave “M/S IN” connectors. 25. Connect the load wiring as shown in Figure 3–11 above. 26. Power up both CW units simultaneously. 27. Control the master/slave pair by controlling the CW master via the front panel or its command interface.
Installation 2.9.
Elgar CW-P Series Installation Setup Six CW Units as 3–Phase Master/Slave Set using Menu System 1. Ensure load wiring is removed from the six CW units. 2. Ensure no master/slave cables are attached to “Analog Slave” connectors on CW’s. 3. Ensure no master/slave cables are connected to the “M/S IN “ and “M/S OUT” connectors. 4. Connect the mains wiring to the line terminals. 5. Assign labels to the six CW units “A master”, “B master”, “C master”, “A slave”, “B slave”, “C slave”. 6.
Installation 26. Rotate the right knob until the right display reads “A”. 27. Press the ENTER/SAVE button. 28. Set up the B phase. 29. On the B master CW press the “ENTER/SAVE” button. 30. Rotate the left knob until the left display reads “Addr”. 31. Rotate the right knob until the right display reads “0”. 32. Press the ENTER/SAVE button. 33. Press the ENTER/SAVE button. 34. Rotate the left knob until the left display reads “ChAn”. 35.
Elgar CW-P Series Installation 54. On the C slave CW press the ENTER/SAVE button. 55. Rotate the left knob until the left display reads “Addr”. 56. Rotate the right knob until the right display reads “1”. 57. Press the ENTER/SAVE button. 58. Press the ENTER/SAVE button. 59. Rotate the left knob until the left display reads “ChAn”. 60. Rotate the right knob until the right display reads “C”. 61. Press the ENTER/SAVE button. 62. Power down six CW power supplies. 63.
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SECTION 3 OPERATION This section details the front panel operations of the CW series power source, including the initialization process and some system operations. 3.1 CW Front Panel Controls and Indicators The controls and indicators on the front panel of the CW are detailed below. Refer to Figure 4–1. Figure 4–1 Front Panel Controls (CW 801P) Power Switch Press the top portion of the switch to turn power on, press the bottom portion of the switch to turn the power supply off.
Operation Elgar CW-P Series Numeric Display. The large, four-digit display in the VOLTAGE/POWER section is a digital voltmeter that measures and displays the power supply’s voltage/power parameters. If the CW is operating with output power turned off, this meter displays the voltage that the output will assume when it is turned on. VOLTAGE MODE Lamp. This LED, located directly over the numeric display, indicates that the power supply is operating in the constant output voltage mode.
Elgar CW-P Series Operation ESCAPE Button. Press this button to exit the Menu function without saving parameter changes. Note that this button only abandons the change to the currently selected parameter; previous parameter modifications that were completed using the ENTER/SAVE button are unaffected. REMOTE Lamp. When lit, this lamp indicates remote programming is enabled. When flashing, this lamp indicates that a remote programming error has been encountered.
Operation Elgar CW-P Series OUTPUT Section This section is used to open and close the output relay. Output terminals are available in the universal AC connector located in the OUTPUT section, as well as on the rear panel of the CW unit. Output ON Lamp. When lit, this lamp indicates that the CW output relay has been set to the on position, and power is on the output terminals. Output OFF/RESET Button. This switch allows you to energize or deenergize the output terminals of the power supply.
Elgar CW-P Series Operation Enter the menu system, detailed in Section 5.3, by pressing the ENTER/SAVE button once. After displaying and changing a menu parameter, press ENTER/SAVE again to accept and apply the change. To change more than one item in the menu system, press ENTER/SAVE after each parameter modification once to save and once to reenter the menu system. Press the ESCAPE button to abandon the present change without saving.
Operation 3.4 Elgar CW-P Series Programmed Frequency Steps The allowed frequency delta for programmed frequency steps is a function of programmed output voltage and phase angle for models with the V-Option. At programmed phase angles greater than 90º, and programmed output voltage greater than 270 VRMS, the allowed frequency step is 45–500 Hz. At programmed phase angles greater than 90º, and programmed output voltage of 310 VRMS, the allowed frequency step is reduced to 45–250 Hz.
SECTION 4 PROGRAMMING 4.1 Programming the CW Via the Front Panel Press the PROGRAM button in the VOLTAGE/POWER section to enter Program mode. The PROGRAM LED lights up and the last programmed value appears in the digital display. The associated LED lights to show which item (voltage or overvoltage) is being programmed. The rotary knob will be active and any change made to the setpoint being adjusted is final as it is made. Press any button to exit the Program mode.
Programming 4.1.1 Elgar CW-P Series VOLTAGE/POWER Section Change Voltage Range To change the voltage range from High to Low or vice-versa, press the V RANGE button after pressing PROGRAM. The output relay will open (if it was closed) and the voltage will be set to 0. The unit will remain in program voltage mode to allow reprogramming of the voltage. Program Output Voltage Setpoint Press the left PROGRAM button repeatedly until the VOLTS LED is illuminated.
Elgar CW-P Series Programming Measured Wattage When the left MEASURE and the WATTS LEDs are illuminated, the wattage being sourced at the output terminals is displayed on the left display. Displaying Overvoltage Setpoint When the left MEASURE and the OVP LEDs are illuminated, the over-voltage setpoint is displayed on the left display.
Programming 4.3 Elgar CW-P Series Menu Operations There are two buttons in the Menu section of the front panel, ENTER/SAVE and ESCAPE. Press the ENTER button to enter the Menu system. The MENU/STATUS LED lights and the left and right displays are overridden to provide menu system readouts. When in the Menu mode, the two MEASURE and two PROGRAM LEDs are all turned off.
Elgar CW-P Series Programming The Menu LED is used to indicate if changes have been introduced into the menu system. If there have been no changes, the LED will light steadily. If the operator has introduced some change to a menu variable, the LED will blink. The Menu LED is illuminated steadily when the menu system is entered, indicating that nothing has yet been changed.
Programming 4.3.3 Elgar CW-P Series Specify Current Limit Type This menu item specifies whether the CW will shut down after a delay or fold back voltage to maintain the presently set current at the output terminals. CURR 4.3.4 SHUT,FOLD Specify Shutdown Delay This menu item specifies the amount of time that the CW will fold back before shutting down when the current is exceeded and the above mode is in shutdown mode. The range is 0 to 3000 milliseconds. CDLY 4.3.5 nnn (e.g.
Elgar CW-P Series 4.3.7 Programming Recall Machine Settings This menu item, when saved (not cancelled) by the user, will recall to the present system the system state that was saved in the dialed in memory location. Valid memory locations are 0 to 99. RCL nn System state number 99 is the factory default state. The following are the default factory settings: • Volts: 0.
Programming 4.3.11 Elgar CW-P Series RMS Voltage Loop This entry specifies whether the RMS voltage loop is on or off. When the voltage loop is turned on, the RMS output voltage is tightly regulated at the sense point and the output impedance is compensated for. When the voltage loop is off, the output impedance is not compensated for. LOOP 4.3.
SECTION 5 MAINTENANCE 5.1 Periodic Service No routine maintenance on the CW Series unit is required, aside from periodic cleaning. Once a unit is removed from service, it may be cleaned with isopropyl alcohol (or an equivalent solvent) on the metal surfaces, and a weak solution of soap and water on the front panel. Remove dust from in and around components on the printed circuit boards, taking suitable measures to control electrostatic discharge (ESD). 5.
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