Atec AMX User Manual

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AMX Series

SINGLE AND THREE

PHASE AC POWER

SOURCES

500 VA

12,000 VA

TAKE CONTROL OF Y OUR A C TEST PO WER

The AMX Series is a family of High Performance Linear AC power sources covering the power range from 500 VA to 12 kVA. The product line offers both single and three phase models. Units are conservatively designed and output power ratings are based on the most severe combination of input line, output voltage, power factor, and temperature. This approach to product design allows the AMX Series to excel when delivering the high peak load currents demanded in the AC test environment. Great emphasis has been placed on low acoustic noise, ease of installation, and maximum power per cubic inch of rack space. Control and operating features provide a high degree of application versatility and ease of use for the test engineer. Applications range from simple, manually controlled frequency conversion to harmonic testing and sophisticated bus programmable transient simulation.

An exceptionally broad bandwidth (50 kHz small signal) combined with peak/RMS current of 4-6:1 give the AMX Series the ability to produce high quality, low distortion output power into the most dynamic loads.

Pacific Model 308AMX with UPC Controller

KEY FEATURES PROVIDE APPLICATION VERSATILITY

• IEEE-488.2 or RS-232C with SCPI compatibility

• LabVIEW for Windows®/LabWindows® drivers

• Waveform Creation by Harmonic Synthesis

• Graphical Analysis (Voltage and Current)

• Harmonic Analysis (Voltage and Current)

• Metering of RMS and Peak Values

• Continuous Self Calibration (CSC)

• Line Sync Option

• 6:1 Peak Current Capability

• Low Impedance for IEC555 Testing

• Programmable Output Impedance

• Up to 0-300 VAC Direct Coupled Out

• 1 Phase / 3 Phase Switch Selectable

• 20-5000 Hz Full Power Bandwidth

• Power Levels from 500 VA to 12 kVA

• Externally Referenced Meter Calibration

• CE and ETL Mark available

DESIGN PROVIDES TOTAL CONTROL OF AC POWER

• All AMX Series power source models may be equipped with either a digitally programmable Oscillator/Controller (UPC type) or a manually controlled Oscillator (UMC type).

• Single phase power source models may be controlled to operate on either a 0-135 VAC range or a 0-270 VAC range. Three phase models are additionally switchable to 3ø/1ø output power form.

• Total control of the output power form and the selection of either the direct output or the optional transformer output is available from the front panel or the bus.

• All operating functions may be controlled from either the front panel or from a remote RS-232 or IEEE 488.2/ SCPI BUS. LabVIEW for Windows® and LabWindows® Instrument Drivers are available.

SPECIAL AMX SERIES OPERATING FEATURES

CONTINUOUS SELF CALIBRATION

Provides for exceptional accuracy of the AC output Voltage. When enabled, accuracy improves to ±0.03% referenced to the power source internal voltmeter.

PROGRAMMABLE D YN AMIC OUTPUT IMPEDANCE (OPTIONAL)

Provides positive or nega ti v e output impedance. T he output v oltage wa v eform at the right is flattened as a result of a high peak load current drawn by an electronic load at the peak of the sinewave .

Engaging the dynamic output impedance (Zº) feature dynamically compensates, as shown at the right, for the distribution or transformer losses up to ±10% of the output voltage.

WAVEFORM LIBRARY

Up to 99 different waveforms ma y be stored in the wa v eform library f or e x ecution as part of a steady state test program or for substitution in any output phase as part of a transient test program. Memory location #1 is a non-editable high resolution sine wave. Locations 2-16 are editable and may be substituted in any output phase. Locations 19-99 are factory stored, non editable waveforms that may be copied to 2-16 for edit and execute.

WAVEFORM LIBRARY

THD=8.7%

EDIT WAVEFORM: NUMBER=16 RANGE=2-22 STARTING PHASE ANGLE=0 0-359.5° ENDING PHASE ANGLE=0 0-359.5° VOLTAGE IN PERCENT=-100 (+/-)0-100%

Oscillograph of voltage and current waveform at load due to distribution losses. THD=6.6%

Same conditions with programmable Zo engaged. THD=0.25%

THD=22.2%

THD=18.1%

WAVEFORM EDIT

Provides the ability to modify a stored wav eform by specifying the waveform amplitude desired at each specific phase angle. This method can be used to quickly create spikes, dropouts, notches and other sub-cycle wav e conditions. The resulting modified waveform can be stored for e x ecution.

W AVEFORM ANAL YSIS (OPTIONAL)

Provides both a graphic and numeric display of the harmonic structure of a voltage or current waveform. The w a v eform is sampled at 512 samples per cycle using a 12 bit A/D converter. The resulting high f idelity w a v eform is analyzed for its harmonic structure up through the 51st harmonic. Data presented includes the magnitude of each harmonic in %, the total harmonic distortion, and the odd and even harmonic distortion in %.

WAVEFORM SYNTHESIS (OPTIONAL)

Provides the ability to quickly create virtually any AC T est Wav eform that may be required by building it out of harmonics. The process is as simple as ke ying in the harmonic multiple, the amplitude, and the phase angle for each desired harmonic up through the 51st. If desired, waveforms may also be created in the time domain by making entries from the front panel or by downloading from a host PC.

TIME BASED TRANSIENTS

Provide the ability to create and execute on command, transients that occur linearly over a specified time segment to modify output voltage or frequency .

WAVEFORM EDIT

024

SELECT ITEM TO GRAPH

CURRENT VOLTAGE

PHASE A

WAVEFORM UNDER ANALYSIS

10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 41

% THD

12.9

HARMONIC CONTENT OF

% OHD

12.9

% EHD

0.6

%CONTENT

10.0

9.0

8.0

7.0

6.0

5.0

4.0

3.0

2.0

1.0

0.0

HARMONIC CONTENT OF

WAVEFORM SYNTHESIS: WAVEFORM #2 HARMONIC: 2nd 3rd 4th 5th 6th CONTENT: .1% 0% 0% 0% 0% ØANGLE: 0° 0° 0° 0° 0°

WaAVEFORM SYNTHESIS

GPIB address

FREQ

400.00

Vrms

115.6

Irms

115.6

Ipeak

0.00

0.0000

KVA

0.0000

1.0

HARMONIC#

CYCLE BASED TRANSIENTS

Provide the ability to create and execute, on command, transients that substitute a selected waveform in the output for 1 to 100 cycles. T he waveform being substituted can be selected and/or modif ied from the waveform library. Substitution is for an integer number of cycles, regardless of frequency.

TIME BASED TRANSIENTS

CYCLE BASED TRANSIENTS

METERING WAVEFORM CONTROL/ANALYSIS

V/I METER: ENTRY: 120.0 FREQ=60.00 Va=120.0 Vb=120.0 Vc=120.0 SENSE=INT Vab=208.0 Vbc=208.0 Vca=208.0 MANUAL MODE Ia=06.00 Ib=06.22 Ic=06.15

POWER METER: PHASE A PHASE B PHASE C KVA 0.720 0.746 0.738 KW 0.720 0.746 0.738 PF 1.000 1.000 1.000

AMPS METER: PHASE A PHASE B PHASE C RMS 0.720 0.746 0.738 PEAK 1.044 1.119 1.383 CREST FACTOR 1.45 1.50 1.90

EDIT WAVEFORM: NUMBER=16 RANGE=2-22 STARTING PHASE ANGLE=0 0-359.5° ENDING PHASE ANGLE=0 0-359.5° VOLTAGE IN PERCENT=-100 (+/-)0-100%

WAVEFORM SYNTHESIS: WAVEFORM #2 HARMONIC: 2nd 3rd 4th 5th 6th CONTENT: .1% 0% 0% 0% 0% ØANGLE: 0° 0° 0° 0° 0°

ØA CURRENT THD=17.8 % OHD=17.8EHD=0.3% HARMONIC: 2nd 3rd 4th 5th 6th CONTENT: .1% 17.8% 0% 0% 0% ØANGLE: 0° 0° 0° 0° 0°

FUNCTION KEY PROVIDES ACCESS TO SPECIAL FUNCTIONS

SETUP: PRESS 1 FOR PROGRAM SETUP

2 FOR WAVEFORM SETUP 3 FOR GENERAL SETUP 4 FOR CALIBRATION MENU

PROGRAM SETUP

• Copy a program

• Delete a program

• Erase all memory, reset CPU

WAVEFORM SETUP

• Edit a waveform

• Copy a waveform

• Waveform synthesis

GENERAL SETUP

• UPC setup

• LCD setup

• UPC status

• Power source status

• Range control

• Slew rate setup

CALIBRATION MENU

• Execute externally referenced calibration

• View calibration constants

SPECIAL FUNCTIONS ACCESSED THROUGH UPC SETUP MENU

• SENSE Establishes either local or external

sense for metering and CSC.

• CSC Continuous Self Calibration –

provides for exceptional voltage accuracy.

• PROGRAM Programmable output impedance

° dynamically compensates for

output transformer or line distribution losses. Can simulate a soft power grid.

• TRANSITION Permits control of the transition TIME time when changing the output

voltage and frequency.

• FREQUENCY Sets min and max programmable LIMITS frequency limits.

• VOLT AGE Sets min and max programmable

LIMITS voltage limits.

TOTAL CONTROL, METERING,

AND ANALYSIS OF AC PO WER.

SIMPLE INTUITIVE OPERATION.

INFORMATIVE 160 CHARACTER LCD DISPLAY

• Soft green backlight

• Adjustable

PARAMETER SELECT KEYS

Select phase voltages and operating frequency when manual control is desired. The selected parameter is indicated by the LCD display. The clear key erases entries and keeps erasing with repeated pressing until the basic VI screen is displayed.

EXECUTE KEY

Instantly executes a stored program that has been selected with the program key.

SLEW KEYS

Smoothly change the designated voltage or frequency parameters. Rates are separately programmable.

TRANSIENT (TRANS) KEY

Turns time based or cycle based transients On or Off. Indicator is On when transient is executed.

OUTPUT ENABLE KEY

Turns the output contactor of the power source On or Off. Indicator is On when the contactor is closed.

ENTER KEY

Stores new parameter data that has been keyed in.

PROGRAM KEY

Selects 1 of 99 programs for edit or execution.

EDIT KEY

Selects the program edit mode and prompts for new entry.

STORE KEY

Stores a program upon completion of editing.

DISPLAY KEY

Sequences through each metering screen:

• VI Meter

• Power Meter

• AMPS Meter

• W a vef orm Analysis (option)

AMX POWER SOURCE MODELS

MODEL

105AMX

108AMX

112AMX

125AMX

140AMX

305AMX

308AMX

312AMX

318AMX

320AMX

330AMX

345AMX

360AMX

390AMX

3120AMX

RATED

P0WER

(VA)

500

750

1200

2500

4000

500

750

1200

1800 3Ø

2000

3000

4500

6000

9000

12000

OUTPUT

VOLTS MAX

(Note 2)

)

RMS

1Ø 135/270 4/2 40/20

1Ø

3Ø

OUTPUT

FORM

(Note 1)

135/270

150/300

135/270 135/270

135 L-N 135/270

135 L-N 150/300

150 L-N

135/270 135 L-N

135/270

135 L-N

OUTPUT

AMPS

)

RMS

(Note 3)

6/3 40/20

10/5

20/10

32/16

4/2

1.5/Ø 6/2

2/Ø

10/3.3

3.3/Ø

15/5

5/Ø

18/6

6/Ø

24/12

8/Ø

36/12

12/Ø

48/16

16/Ø

72/24

24/Ø

96/32

32/Ø

OUTPUT

150/50

330/110

110/Ø

420/140

140/Ø

AMPS

(APK)

40/20 90/45

140/70

45/15

15/Ø

45/15

15/Ø

45/15

15/Ø

60/20

20/Ø

60/20

20/Ø

50/Ø

165/55

55/Ø

210/70

70/Ø

INPUT

POWER

FORM

(Note 4)

1Ø

3Ø

1Ø

3Ø

PANEL

HEIGHT

(IN.)

5 1/4 65

5 1/4

10 1/2

5 1/4

8 3/4 100

8 3/4

14 28

2 each x 14

WEIGHT

(LBS.)

110

170

100

162

177

185

175 x 2

185 x 2

Notes:

1. All single phase units are operable with dual voltage ranges as listed. All three phase units are operable as single phase with dual voltage range capability or as three phase. Output voltage ranges and 1f / 3f conversions are selected by front panel or bus command.

2. Output voltage ranges listed are for standard units. VMAX is achievable with nominal input voltage at full load. Other voltage ranges are available with the output magnetics option.

3. Current ratings at 125 VRMS output.

4. Input power frequency is 47-63 Hz. Single Phase: 100, 110, 120, 200, 208, 220, 230, 240, VAC ± 10%. Three phase: 208, 220, 240, 380, 416 VAC ± 10%.

POWER SOURCE SPECIFICATIONS

Output Frequency: 20 to 5000 Hz. Full Power Line Regulation: 0.1% max for a 10% line change Load Regulation: 0.25% 20 to 2000 Hz.

0.5% 2000 to 5000 Hz. Can be improved to less than 0.03%

with CSC engaged.

Output Distortion: 0.1% THD from 20 to 1000 Hz

0.25% THD from 1000 to 5000 Hz

Ripple and Noise: -72 dB Response Time: 5µsec. typical to a step load change. Small

MECHANICAL SPECIFICATIONS

All models are designed for operation in 19 inch equipment racks. Models above 1800 VA have side handles for ease of handling.

Mounting: Standard 19 inch rack. Slide rails are available

as an option for all models. Height: See model table above for panel height. Depth: Will not exceed 24 inches from the front panel

to the rear of the chassis, including

connectors, handles and cabling. Cooling: Forced air, front or side intakes, rear exhaust

with auto fan speed control for low acoustic

noise operation.

signal band-width is 5 Hz. to 50 kHz, typical.

POWER SOURCE SPECIFICATIONS

AMX Series Power sources can be equipped with output transformers to provide an alternate output voltage range. Selection of direct or transformer coupled range is performed by the controller via front panel or bus command. The standard frequency range for transformer coupled outputs is 45 to 5000 Hz. Standard output ratios are 1.5:1, 2.0:1, and 2.5:1. Transformer outputs are supplied internally or externally via a Magnetics Module. Consult the factory f or additional information regarding special output ranges not listed.

UPC CONTR OLLER SPECIFICATIONS

The UPC controller is essentially a 3f AC arbitrary waveform generator and Precision AC metering system. Each waveform stored in the UPC is encoded with 12 bit amplitude and 10 bit time resolution for each cycle . The waveform for each phase may be independently selected and may be independently varied in amplitude and phase angle with respect to phase A. The UPC output metering samples the output volts and amps at 512 samples per measurement using a 12 bit A/D converter. This technique provides exceptional metering accuracy and resolution (20 bits), and delivers a high-fidelity waveform back to a host computer for analysis. The UPC includes a remote GPIB interface compatible with IEEE 488.2 and SCPI. An available option is an RS-232 serial port that operates up to 38.4 kBaud.

Frequency: 20.00 to 5000 Hz ±0.01% Voltage: Programmable, 0-VMAX, in 0.1 volt steps

Direct (see table on page 6) Voltage: Multi-range units are equipped with

Transformer output transformers. When alternate range is

selected, voltage at transformer output is programmable in steps of 0.5 volts.

Accuracy: Executive voltage is within ±50 mv (0.03%) Command of command voltage, referenced to the Voltage internal voltmeter with CSC engaged.

Accuracy: ± 0.01%, 20-5000 Hz Output Zo: Dynamic output impedance (Zo) is

(Optional) programmable, 0 to ± Zo max. in 0.1%

steps. Zo value in milliohms varies with different models but usually results in a ± 10% change in output voltage at maximum load amps.

Phase: Phase Angle (f) of Phases B and C Angle relative to Phase A is programmable from 0-

359° in 1° increments ± 0.5°.

Voltmeter: Range - 0-354 volts L-N

0-708 volts L-L

Resolution - 0.10VAC to front panel

0.001VAC to remote interface

Accuracy - ± 0.25% of reading ± 0.1% of

range (50-500Hz)

Ammeter: Range - 300% of system current rating

Resolution - 0.01AAC to front panel

0.001AAC to remote interface

Accuracy - ± 0.25% of reading ± 0.1% of

range (50-500Hz)

Power Meter: Range - Based on ammeter range

Resolution - 1.0 watts or VA to front panel

0.001 Watts or VA to remote interface

Accuracy - ± 1% of Full Scale

Power Factor: Calculated and displayed to three significant & Crest Factor digits.

Ext. Input: Each phase is algebraically summed with

UPC waveform and amplified 25X to the direct output.

Current: Current limit is programmable from 0 Limit to Ipeak maximum of the power source.

Accuracy is ± 1%, resolution ± 0.05%.

Library: Stores up to 99 steady state parameter Steady sets consisting of waveform, voltage, State frequency, f angle and current limit. Can be Programs executed by program number from the front

panel or the bus.

Library: Stores up to 99 transient programs - one Transient associated with each steady state program. Programs Allows for changes in v olts and frequency

vs. time, or waveform changes by c ycle count.

Library: Stores up to 99 waveforms that can be edited Waveform and executed in any manner and in any

output phase.

Amplitude: ±10 volt input for each phase Mod. Input modulates the output ± 100%

Sync Outputs:1) Zero crossing, Phase A

2) Transient start-stop

3) True when Transient is enabled

4) Clock - 1024 times the output freq.

Command: Average time to start of parameter change Response from bus command (end of string character) Time is 50 ms. Ramp transition time to final value

is settable from 250 µs to 300 sec.

Waveform : Permits waveform creation by entering % Synthesis amplitude and phase angle for the 2nd

through the 51st harmonics.

Waveform: Reports voltage and current waveform Analysis harmonic content in % and phase angle

for the 2nd through the 51st harmonics. Displays THD, OHD, EHD in %.

MANUAL CONTROL OF A C POWER

Provide easy manual control with Pacific’s UMC-31 Manual AC Power Controller.

• Obtain precision frequency and phase conversion for manufacturing and test.

• Provide high quality, general purpose lab power where test versatility is required.

• Achieve low cost and power form flexibility for power supply tests.

SPECIFICATIONS UMC-31 CONTROLLER

UMC-31 Manual Controller

The UMC-31 provides operational control and high quality oscillator signals for both single and three phase Power Sources.

Phase: Select single, split, or three phase operation by

internal jumper. Phase angles are fixed at 120° and 240° for three phase operation.

Frequency: Select 50, 60, or 400 Hz fixed or a variable

frequency mode of 45 to 500 Hz. Voltage: 0-VMAX via 10 turn potentiometer on the front panel. Metering: Autoranging Volts, Amps, and Frequency.

For additional data sheets or technical application assistance, please call or fax Pacific Power Source, attn.: Sales Department.

Authorized Representative

Pacific Power Source 15122 Bolsa Chica Street Huntington Beach, CA 92649 USA Tel: +1 714 898 2691

+1 800 854 2433 Fax: +1 714 898 8076 http://www.pacificpower.com

A Division of Thermo Voltek, a Thermo Electron Company

Thermo Voltek

Atec AMX User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual