AMETEK MX15 Series User Manual

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MX15 Series

AC and DC Power Source

User Manual

Revision M Feb 2015 Copyright  2006 - 2015

P/N 7005-960

User Manual – Rev M California Instruments



User's Manual AC Power Source

Models:

 MX15-1  MX15-1P  MX15-1Pi  MX30/2-1  MX45/3-1  MX30/2-1Pi (-MB)  MX45/3-1Pi (-MB)

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User Manual – Rev M California Instruments

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.

AMETEK, Inc. is a leading global manufacturer of electronic instruments and electromechanical devices with annualized sales of $2.5 billion. The Company has over 11,000 colleagues working at more than 80 manufacturing facilities and more than 80 sales and service centers in the United States and around the world.

Trademarks

AMETEK is a registered trademark of AMETEK, Inc. California Instruments is a trademark owned by AMETEK, Inc. Other trademarks, registered trademarks, and product names are the property of their respective owners and are used herein for identification purposes only.

Notice of Copyright

MX Series User Manual

Exclusion for Documentation

UNLESS SPECIFICALLY AGREED TO IN WRITING, AMETEK PROGRAMMABLE POWER, INC. (“AMETEK”):

(a) MAKES NO WARRANTY AS TO THE ACCURACY, SUFFICIENCY OR SUITABILITY OF ANY TECHNICAL

OR OTHER INFORMATION PROVIDED IN ITS MANUALS OR OTHER DOCUMENTATION.

(b) ASSUMES NO RESPONSIBILITY OR LIABILITY FOR LOSSES, DAMAGES, COSTS OR EXPENSES,

WHETHER SPECIAL, DIRECT, INDIRECT, CONSEQUENTIAL OR INCIDENTAL, WHICH MIGHT ARISE OUT OF THE USE OF SUCH INFORMATION. THE USE OF ANY SUCH INFORMATION WILL BE ENTIRELY AT THE USER’S RISK, AND

STEPS HAVE BEEN TAKEN TO MAINTAIN THE ACCURACY OF THE TRANSLATION, THE ACCURACY CANNOT BE GUARANTEED. APPROVED AMETEK CONTENT IS CONTAINED WITH THE ENGLISH LANGUAGE VERSION, WHICH IS POSTED AT WWW.PROGRAMMABLEPOWER.COM.

Date and Revision

February 2015 Revision M

Part Number

7005-960

Contact Information

Telephone: 800 733 5427 (toll free in North America) 858 450 0085 (direct)

Fax: 858 458 0267 Email: sales@programmablepower.com service@programmablepower.com Web: www.programmablepower.com

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User Manual – Rev M California Instruments

WARNING

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 (below) chassis ground.

WARNING

The equipment used contains ESD sensitive parts. When installing equipment, follow ESD Safety Procedures. Electrostatic discharges might cause damage to the equipment.

Important Safety Instructions

Before applying power to the system, verify that your product is configured properly for your particular application.

Only qualified personnel who deal with attendant hazards in power supplies, are allowed to perform installation and servicing.

Ensure that the AC power line ground is connected properly to the Power Rack input connector or chassis. Similarly, other power ground lines including those to application and maintenance equipment must be grounded properly for both personnel and equipment safety.

Always ensure that facility AC input power is de-energized prior to connecting or disconnecting any cable. In normal operation, the operator does not have access to hazardous voltages within the chassis. However,

depending on the user’s application configuration, HIGH VOLTAGES HAZARDOUS TO HUMAN SAFETY may be normally generated on the output terminals. The customer/user must ensure that the output power lines are labeled properly as to the safety hazards and that any inadvertent contact with hazardous voltages is eliminated.

Guard against risks of electrical shock during open cover checks by not touching any portion of the electrical circuits. Even when power is off, capacitors may retain an electrical charge. Use safety glasses during open cover checks to avoid personal injury by any sudden component failure.

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.

SAFETY SYMBOLS

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User Manual – Rev M California Instruments

Product Family: MX Series AC Power Source

Warranty Period: 1 Year

WARRANTY TERMS

AMETEK Programmable Power, Inc. (“AMETEK”), provides this written warranty covering the Product

stated above, and if the Buyer discovers and notifies AMETEK in writing of any defect in material or workmanship within the applicable warranty period stated above, then AMETEK may, at its option: repair or replace the Product; or issue a credit note for the defective Product; or provide the Buyer with replacement parts for the Product.

The Buyer will, at its expense, return the defective Product or parts thereof to AMETEK in accordance with the return procedure specified below. 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 thereof:

 is damaged by misuse, accident, negligence or failure to maintain the same as specified or

required by AMETEK;

 is damaged by modifications, alterations or attachments thereto which are not authorized

by AMETEK;

 is installed or operated contrary to the instructions of AMETEK;  is opened, modified or disassembled in any way without AMETEK’s consent; or  is used in combination with items, articles or materials not authorized by AMETEK.

The Buyer may not assert any claim that the Products are not in conformity with any warranty until the Buyer has made all payments to AMETEK provided for in the Purchase Order Agreement.

PRODUCT RETURN PROCEDURE

Request a Return Material Authorization (RMA) number from the repair facility (must be done in the

country in which it was purchased):

 In the USA, contact the AMETEK Repair Department prior to the return of the product to

AMETEK for repair: Telephone: 800-733-5427, ext. 2295 or ext. 2463 (toll free North America)

858-450-0085, ext. 2295 or ext. 2463 (direct)

 Outside the United States, contact the nearest Authorized Service Center (ASC). A full

listing can be found either through your local distributor or our website, www.programmablepower.com, by clicking Support and going to the Service Centers tab.

When requesting an RMA, have the following information ready:

 Model number  Serial number  Description of the problem

NOTE: Unauthorized returns will not be accepted and will be returned at the shipper’s expense. NOTE: A returned product found upon inspection by AMETEK, to be in specification is subject to an

evaluation fee and applicable freight charges.

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Table of Contents

1 Introduction ................................................................................................................................... 10

1.1 General Description ........................................................................................................................ 10

1.2 Manual organization and format ...................................................................................................... 10

2 Specifications ................................................................................................................................ 11

2.1 Electrical ......................................................................................................................................... 11

2.2 Mechanical ...................................................................................................................................... 19

2.3 Environmental ................................................................................................................................. 20

2.4 Regulatory ....................................................................................................................................... 20

2.5 Front Panel Controls ....................................................................................................................... 20

2.6 Special Features and Options ......................................................................................................... 21

2.7 Supplemental Specifications ........................................................................................................... 29

3 Unpacking and Installation ............................................................................................................ 34

3.1 Unpacking ....................................................................................................................................... 34

3.2 Power Requirements ....................................................................................................................... 34

3.3 Mechanical Installation .................................................................................................................... 35

3.4 AC Input Connections and Wiring ................................................................................................... 35

3.5 AC On/Off Circuit Breaker on MX Series front panel. ..................................................................... 39

3.6 Output Connections ........................................................................................................................ 41

3.7 Connectors - Rear Panel ................................................................................................................. 49

3.8 Multiple Cabinet System Configurations (incl. –MB) ....................................................................... 56

3.9 Multiple Cabinet Power Up/Down Procedures ................................................................................ 57

3.10 Clock and Lock Configurations ....................................................................................................... 58

3.11 Basic Initial Functional Test ............................................................................................................ 61

3.12 Remote Inhibit / Remote Shutdown ................................................................................................ 63

3.13 Junction Box Accessory .................................................................................................................. 64

3.14 Output Filter Box Accessory ............................................................................................................ 65

4 Front Panel Operation .................................................................................................................. 66

4.1 Tour of the Front Panel ................................................................................................................... 66

4.2 Menu Structure ................................................................................................................................ 71

4.3 Output Programming ....................................................................................................................... 96

4.4 Waveform Management [1Pi Controller only] ................................................................................. 98

4.5 Standard Measurements ............................................................................................................... 102

4.6 Advanced Measurements [1Pi Controller only] ............................................................................. 104

4.7 Transient Programming ................................................................................................................. 105

5 Principle of Operation ................................................................................................................. 111

5.1 General ......................................................................................................................................... 111

5.2 Overall Description ........................................................................................................................ 111

5.3 Controller Assembly ...................................................................................................................... 113

5.4 System Interface Board ................................................................................................................. 116

5.5 Current / Voltage Sensor Board .................................................................................................... 116

5.6 Low Voltage Power Supply ........................................................................................................... 116

5.7 Power Module ............................................................................................................................... 117

6 Calibration ................................................................................................................................... 122

6.1 Recommended Calibration Equipment ......................................................................................... 122

6.2 Front Panel Calibration Screens ................................................................................................... 123

6.3 Routine Measurement Calibration ................................................................................................ . 124

6.4 Routine Output Calibration ............................................................................................................ 126

6.5 Non-Routine Calibration ................................................................................................................ 127

7 Service ........................................................................................................................................ 130

7.1 Cleaning ........................................................................................................................................ 130

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7.2 General .......................................................................................................................................... 130

7.3 Basic operation .............................................................................................................................. 130

7.4 Advanced Troubleshooting. ........................................................................................................... 132

7.5 Factory Assistance ........................................................................................................................ 134

7.6 Fuses ............................................................................................................................................. 135

7.7 Firmware Updates ......................................................................................................................... 135

8 Top Assembly Replaceable Parts ............................................................................................... 138

9 Options ........................................................................................................................................ 141

9.1 Introduction .................................................................................................................................... 141

9.2 Option -HV: Additional AC Voltage Range .................................................................................... 141

9.3 Option –160: RTCA/DO-160 Tests ................................................................................................ 142

9.4 Option –704: MilStd704 Tests ....................................................................................................... 156

9.5 Option –ABD: Airbus ABD0100.1.8 Test ....................................................................................... 169

9.6 Option –787: Boeing B787-0147 Test .......................................................................................... 169

9.7 Option –WHM: Watt Hour Measurement ....................................................................................... 170

9.8 Option –411: IEC 61000-4-11 Voltage Dips and Interruptions ...................................................... 171

9.9 Option –413: IEC 61000-4-13 Interharmonics Test ....................................................................... 172

9.10 Option–SNK: Current Sink ............................................................................................................. 174

10 . Error Messages ......................................................................................................................... 177

Index .................................................................................................................................................. 182

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List of Figures

Figure 2-1: MX15-1 Voltage / Current Rating Chart for 150/300 V AC Ranges – Max Rating. ................................................. 14

Figure 2-2: Voltage / Current Rating Chart for 150/300 V AC Ranges – Derated. ................................................................... 14

Figure 2-3: MX15-1 Voltage / Current Rating Chart for 200/400 V DC Ranges – Max. Rating ................................................ 15

Figure 2-4: Voltage / Current Rating Chart for 200/400 V DC Ranges – Derated .................................................................... 16

Figure 2-5: MX15-1 Voltage / Current Rating Chart, -HV Option – Max. Rating. ..................................................................... 24

Figure 2-6: Voltage / Current Rating Chart, -HV Option – Derated. ......................................................................................... 24

Figure 2-7: -HF Option Voltage Frequency Rating 300V range ............................................................................................... 26

Figure 2-8: -HF Option Voltage Frequency Rating 150V range ............................................................................................... 26

Figure 2-9: MX output filter option schematic .......................................................................................................................... 31

Figure 2-10: MX45 Output Noise 10 KHz – 1 MHz .................................................................................................................. 32

Figure 2-11: MX45 Output Noise 10 KHz - 1 MHz with optional Filter ..................................................................................... 33

Figure 3-1: The MX15 Power Source ...................................................................................................................................... 34

Figure 3-2: Location of AC Input Fuse Block and Chassis Ground Connection - Rear View, Access Panel Removed ........... 36

Figure 3-3: MX Series AC Input Connection Diagram (Rear view) .......................................................................................... 38

Figure 3-4: Rear Panel ........................................................................................................................................................... 40

Figure 3-5: External sense cable shield connection to chassis ground ................................................................................... 41

Figure 3-6: MX15-1 Output Wiring (Rear view) ....................................................................................................................... 43

Figure 3-7: MX30/2 or MX30/2-MB Output Wiring (Rear view) ................................................................................................ 44

Figure 3-8: Two MX's in Clock and Lock mode Output Wiring (Rear view) ............................................................................. 45

Figure 3-9: MX45/3 or MX45/3-MB Output Wiring (Rear view) ................................................................................................ 46

Figure 3-10: Three MX's in Clock and Lock mode - Output Wiring (Rear view) ....................................................................... 47

Figure 3-11: Ship kit Terminal Block dimensions .................................................................................................................... 48

Figure 3-12: RS232C Cable for PC Connection wiring diagram – MX without USB. ............................................................... 53

Figure 3-13: USB Connector pin orientation. .......................................................................................................................... 54

Figure 3-14: Multi-Cabinet DIP Switch Location and Setting ................................................................................................... 56

Figure 3-15: Functional Test Setup. ........................................................................................................................................ 62

Figure 3-16: 7003-416-1 Output Junction Box ........................................................................................................................ 64

Figure 3-17: 7003-424-1 Output noise filter box. ..................................................................................................................... 65

Figure 4-1: Shuttle Knob ......................................................................................................................................................... 68

Figure 4-2: FUNCTION Keypad ............................................................................................................................................. 69

Figure 4-3: Measurement Screen ........................................................................................................................................... 70

Figure 4-4: PROGRAM Menus ............................................................................................................................................... 76

Figure 4-5: CONTROL Menus ................................................................................................................................................ 78

Figure 4-6: MEASUREMENT Screen ..................................................................................................................................... 81

Figure 4-7: Selecting a Waveform .......................................................................................................................................... 98

Figure 4-8: Custom Waveform Creation with GUI Program .................................................................................................... 99

Figure 4-9: Waveform Crest Factor Affects Max. rms Voltage .............................................................................................. 100

Figure 4-10: Pulse Transients ............................................................................................................................................... 106

Figure 4-11: List Transients ................................................................................................ .................................................. 107

Figure 4-12: Sample Transient Output Sequence ................................................................................................................. 108

Figure 4-13: Switching Waveforms in a Transient List .......................................................................................................... 109

Figure 4-14: TRANSIENT Menu ........................................................................................................................................... 110

Figure 5-1: MX Series Functional Block Diagram.................................................................................................................. 111

Figure 5-2: MX Series Detailed Block Diagram ..................................................................................................................... 114

Figure 5-3: Power Module Detailed Block Diagram ............................................................................................................... 115

Figure 5-4: Power Module Layout ......................................................................................................................................... 117

Figure 5-5: Amplifier Board Layout ....................................................................................................................................... 119

Figure 6-1: Calibration Setup MX45-1 (Rear view) ................................................................................................................ 123

Figure 9-1: Application Menu ................................................................................................................................................ 143

Figure 9-2: DO160 Main Menus ............................................................................................................................................ 144

Figure 9-3: Normal state screens.......................................................................................................................................... 144

Figure 9-4: Voltage Modulation - Frequency characteristics ................................................................................................. 147

Figure 9-5: Frequency Modulation ................................................................................................ ................................ ........ 148

Figure 9-6: Power Interrupt ................................................................................................................................................... 149

Figure 9-7: Power Interrupt for Group2/A(NF) and Group3/A(WF) ........................................................................................ 150

Figure 9-8: Emergency Screens ........................................................................................................................................... 152

Figure 9-9: Abnormal Screen ................................................................................................................................................ 153

Figure 9-10: Applications Menu ............................................................................................................................................ 158

Figure 9-11: MIL704 Menu .................................................................................................................................................... 158

Figure 9-12: Steady State Menu ........................................................................................................................................... 159

Figure 9-13: Emergency Menu ............................................................................................................................................. 162

Figure 9-14: Abnormal Screens ............................................................................................................................................ 163

Figure 9-15: MIL704 DC Menu.............................................................................................................................................. 165

Figure 9-16: Steady State DC .............................................................................................................................................. 165

Figure 9-17: Transient Menu ................................................................................................................................................ 166

Figure 9-18: Abnormal Test Screen ...................................................................................................................................... 167

Figure 9-19: Emergency Test ............................................................................................................................................... 168

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Figure 9-20: Watt-Hour Meter Screen ...................................................................................................................................170

Figure 9-21: WH-Meter Screen with Function Active .............................................................................................................170

Figure 9-22: APPLICATION SCREEN ..................................................................................................................................173

Figure 9-23: INTERHARMONICS SCREENS .......................................................................................................................173

Figure 9-24: REGENERATE CONTROL screen ...................................................................................................................175

List of Tables

Table 3-1: Suggested Input Wiring Sizes for each MX Cabinet * ............................................................................................ 39

Table 3-2: Suggested Output Wiring Sizes * .......................................................................................................................... 42

Table 3-3: System Interface Connectors ................................................................................................................................ 50

Table 3-4: Analog Interface Connector ................................................................................................................................... 50

Table 3-5: BNC Connectors ................................................................................................................................................... 51

Table 3-6: External Sense Connector ..................................................................................................................................... 51

Table 3-7: RS232 Connector pin out – MX with RS232 and USB. .......................................................................................... 52

Table 3-8: RS232C Connector pin out – MX with RS232 but no USB .................................................................................... 52

Table 3-9: USB Connector pin out. ......................................................................................................................................... 54

Table 3-10: RJ45 LAN Connector pin out. .............................................................................................................................. 55

Table 3-11: Clock and Lock Configuration settings ................................................................................................................ 58

Table 3-12: Clock and Lock Initialization settings ................................................................................................ ................... 59

Table 4-1: Menu Tree ............................................................................................................................................................. 75

Table 4-2: Sample Transient List ..........................................................................................................................................108

Table 6-1: Calibration Load Values .......................................................................................................................................124

Table 6-2: Measurement Calibration Table............................................................................................................................125

Table 6-3: Output Calibration Table – MX15 Series ..............................................................................................................126

Table 6-4: Programmable Z adjustment pots ........................................................................................................................129

Table 6-5: Formulas to calculate R and L ..............................................................................................................................129

Table 7-1: Basic Symptoms ..................................................................................................................................................130

Table 7-2: MX Fuse Ratings ..................................................................................................................................................135

Table 7-3: Flash Down load Messages .................................................................................................................................137

Table 8-1: Replaceable Parts ................................................................................................................................................139

Table 8-2: Fuses ................................................................................................................................................................ ...140

Table 9-1: Normal Voltage and Frequency minimum ............................................................................................................145

Table 9-2: Normal Voltage and Frequency Maximum ............................................................................................................145

Table 9-3: Airbus mode voltage modulation. .........................................................................................................................146

Table 9-4: Normal VoltageSurge Sequence ..........................................................................................................................150

Table 9-5: Normal Frequency Transient Sequence ...............................................................................................................151

Table 9-6: Normal Frequency Variation Sequence ................................................................................................................151

Table 9-7: Emergency Voltage and Frequency Minimum ......................................................................................................152

Table 9-8: Emergency Voltage and Frequency Maximum .....................................................................................................152

Table 9-9: Abnormal Voltage Minimum .................................................................................................................................153

Table 9-10: Abnormal Voltage Maximum ..............................................................................................................................153

Table 9-11: Abnormal Frequency Transient ..........................................................................................................................155

Table 9-12: Steady state voltage ...........................................................................................................................................159

Table 9-13: Steady state frequency .......................................................................................................................................160

Table 9-14: Frequency Modulation ........................................................................................................................................160

Table 9-15: Abnormal Over Frequency .................................................................................................................................164

Table 9-16: Abnormal Under Frequency ...............................................................................................................................164

Table 10-1: Error Messages ..................................................................................................................................................181

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User Manual – Rev M California Instruments

1 Introduction

This instruction manual contains information on the installation, operation, calibration and maintenance of all power systems that use the MX15 Series power sources with the programmable controller.

1.1 General Description

The MX15 Series AC and DC power source systems are high efficiency, floor standing AC and DC power sources that provide a precise output with low distortion. Available voltage ranges are 150 Vac, 300 Vac and 400 Vac in AC mode and 200 Vdc and 400 Vdc in DC mode.

Models with a -1 designation provide full front panel operation but do not include certain features such as arbitrary waveform generation unless added as an option at the time of order. Models with the Pi controller offer several additional standard features, including the RS232C, USB, LAN (option) and IEEE-488 interfaces, arbitrary waveform generation, dual voltage ranges and additional measurement functions.

The MX15 Series units are contained in a compact floor standing enclosure on casters. This allows the units to be moved around more easily.

Read the installation instructions carefully before attempting to install and operate the MX15 Series power systems.

1.2 Manual organization and format

All user documentation for AMETEK programmable power sources is provided on CDROM in electronic format. (Adobe Portable Document Format) The required Adobe PDF viewer can be downloaded free of charge from www.adobe.com. This manual may be printed for personal use if a hardcopy is desired. To request a hardcopy from AMETEK Programmable Power, contact customer service at service@programmablepower.com. There will be an additional charge for printed manuals.

This manual contains sections on installation, normal use, maintenance and calibration. If the MX system is equipped with a GPIB, RS232C, USB or LAN interface, refer to the MX Programming manual for information on using the remote control interfaces and command syntax. The programming manual is provided on the same CDROM as this user manual.

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Parameter

MX15

MX30/2

MX45/3

Line Voltage: (3 phase, 3 wire + ground (PE))

208 VLL 10% 230 VLL 10% 400 VLL 10%

480 V

10%

Line VA:

18 KVA

35 KVA

53 KVA

Line Current:

58 A

RMS

@ 187 V

52 A

RMS

@ 207 V

30 A

RMS

@ 360 V

25 A

RMS

@ 432 VLL

Each MX15 chassis requires its own AC

service.

Total Line currents are

2 x MX15

Each MX15 chassis requires its own AC

service.

Total Line currents are

3 x MX15

Line Frequency:

47-63 Hz

Efficiency:

85 % (typical) depending on line and load

Power Factor:

0.95 (typical) / 0.99 at full power.

Inrush Current:

77Apk @ 208 V

73Apk @ 230 V

44Apk @ 400 V

37Apk @ 480 VLL

Each MX15 chassis requires its own AC

service.

Total Peak currents are

2 x MX15

Each MX15 chassis requires its own AC

service.

Total Peak currents are

3 x MX15

Hold-Up Time:

> 10 ms

Isolation Voltage:

2200 VAC input to output 1350 VAC input to chassis

2 Specifications

Specifications shown are valid over an ambient temperature range of 25  5 C and apply after a 30 minute warm-up time. Unless otherwise noted, all specifications are for sine wave output into a resistive load.

2.1 Electrical

2.1.1 Input

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Output Parameter

MX15

MX30/2

MX45/3

Modes

Std Controller

AC, DC

Pi Controller

AC, DC, AC+DC

Voltage:

Ranges (L-N):

AC Mode

Low: 0 - 150 V / High: 0 - 300 V

DC Mode

Low: 0 - 200 V / High: 0 - 400 V

AC+DC Mode

AC: Low: 0 - 150 V / High: 0 - 300 V DC Offset: Low Vrange: 0 - 150 V High Vrange: 0 - 220 V

Resolution:

AC Mode

0.1 V

DC Mode

0.1 V

AC+DC Mode

AC: 0.1 V DC Offset: 0.01 V

Accuracy:

± 0.3 V AC mode ± 1 V DC mode

Distortion THD1: (Resistive load)

< 1 % @ 16 - 66 Hz < 2 % @ 66 - 500 Hz < 3 % @ > 500 Hz

Load Regulation:

0.25 % FS @ DC - 100 Hz

0.5 % FS @ > 100 Hz

Line Regulation:

0.1% for 10% input line change

DC Offset Voltage:

< 20 mV

Output Noise: (20 kHz to 1 MHz)

< 2 V

RMS

low V Range

< 3 V

RMS

high V Range

Output Coupling

DC coupled Except on optional -HV or -XV Voltage range output, which is AC coupled.

Power (total power for all phases, either range, at full scale voltage)

AC Mode

15 KVA

30 KVA

45 KVA

DC Mode

10 KW

20 KW

30 KW

AC+DC Mode

The maximum power and current in the AC+DC mode is equal to that in the DC mode

Current

Note: Current, maximum amps indicated per phase available between 50 and 100 % of voltage

range.

2.1.2 Output

Note: All specifications are for AC and DC unless otherwise indicated.

The distortion specification for the MX Series is valid for resistive load conditions.

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Output Parameter

MX15

MX30/2

MX45/3

Constant Power Mode:

Operation at higher currents but constant power is possible from 80% of Voltage range (125% of max. current) declining to 100% of maximum current at 100 % of voltage range for short periods of time or at reduced ambient temperatures. (< 15 mins @ 30° C). See Figure 2-2 and Figure 2-4.

AC Mode

MX15-1 V Lo: 100 A V Hi: 50 A

MX30/2-1 V Lo: 200 A V Hi: 100 A

MX45/3-1 V Lo: 300 A V Hi: 150 A

DC Mode AC+DC Mode

MX15-1 V Lo: 50 A V Hi: 25 A

MX30/2-1 V Lo: 100 A V Hi: 50 A

MX45/3-1 V Lo: 150 A V Hi: 75 A

Note: Current derates linearly from 50% of voltage range to 20% of specified current at 5% of

voltage range

Current Limit mode

Programmable, CC or CV mode

Repetitive Peak Current

AC Mode

MX15-1 V Lo: 300 A

V Hi: 150 A

MX30/2-1 V Lo: 600 A

V Hi: 300 A

MX45/3-1 V Lo: 900 A

V Hi: 450 A

Frequency

Range:

Standard: 16 Hz - 819.0 Hz

-LF option: 16 Hz - 500.0 Hz

-HF option: 16 Hz – 900 Hz

Resolution:

0.01 Hz from 16.00 to 81.91 Hz

0.1 Hz from 82.0 to 819.0 Hz 1 Hz from 819 to 900 Hz

Accuracy:

± 0.01 %

Ext. Sync Mode

Input:

Isolated TTL input for external frequency control. Requires 5V at 5 mA for logic high.

Accuracy:

Ext. Sync to phase A with fixed Ext. Sync Frequency input: 16 Hz - 100 Hz: < 2° 100 Hz - 500 Hz: < 3° > 500 Hz: < 4°

Programmable Output Impedance

Range:

R: 1 – 200 mOhm

L: 15 – 200 uH

N/A

Resolution:

R: 1 mOhm

L: 1 uH

N/A

Accuracy:

10 % FS

N/A

Note: Output specifications apply below the Current / Voltage rating lines shown in the

V/I rating chart below.

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Current

(RMS)

Voltage (RMS)

75 300

100

50 A

150

Low V Range

High V Range

100 A

7.5

Figure 2-1: MX15-1 Voltage / Current Rating Chart for 150/300 V AC Ranges – Max Rating.

Figure 2-2: Voltage / Current Rating Chart for 150/300 V AC Ranges – Derated.

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Current

(DC)

Voltage (DC)

100 400

25 A

200

Low V Range

High V Range

50 A

Figure 2-3: MX15-1 Voltage / Current Rating Chart for 200/400 V DC Ranges – Max. Rating

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Parameter

Range

Accuracy ()

Resolution

Frequency

16.00 - 820.0 Hz

0.01% + 0.01 Hz

0.01 to 81.91 Hz

0.1 to 500 Hz

RMS Voltage

0 - 400 Volts

0.05V + 0.02%, <100 Hz

0.01 Volt

RMS Current

0 - 150 Amps

0.15A + 0.02%, <100 Hz

0.01 Amp

Peak Current

0 - 400 Amps

0.15A + 0.02%, <100 Hz

0.01 Amp

VA Power

0 - 15 KVA

30 VA + 0.1%, <100 Hz

10 VA

Real Power

0 - 15 KW

30 W + 0.1%, <100 Hz 60 W + 0.1%, 100-820 Hz

10 W

Power Factor (>0.2kVA)

0.00 - 1.00

0.01, <100 Hz

0.02, 100-820 Hz

0.01

Note: Accuracy specifications are valid above 100 counts. For current and power measurements, specifications apply from 2% to 100% of measurement range.

Note: Power factor accuracy applies for PF > 0.5 and VA > 50 % of max.

Current

(DC)

Voltage (DC)

20 40 100 150 200 300 400

62.5 A

31 A

25 A

Full Power

Figure 2-4: Voltage / Current Rating Chart for 200/400 V DC Ranges – Derated

2.1.3 AC Measurements

Measurement specifications apply to MX15-1 / MX15-1Pi. See notes for other models and configurations.

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Parameter

Range

Accuracy ()

Resolution

Voltage

0 - 400 Volts

0.5 Volts

0.1 Volt

Current

0 - 400 Amps

0.5 Amps

0.01 Amp

Power

0 - 10 kW

30 W

10 W

Note: Accuracy specifications are valid above 100 counts. For current and power measurements, specifications apply from 2% to 100% of measurement range.

Parameter

Range

Accuracy ()

Resolution

Frequency fundamental

16.00 - 820 Hz

0.03% + 0.03 Hz

0.01 Hz

Frequency harmonics

32.00 Hz – 16 KHz

0.03% + 0.03 Hz

0.01 Hz

Phase

0.0 - 360.0°

2° typ.

0.5°

Voltage

Fundamental

0.75V

0.01V

Harmonic 2 - 50

0.75V + 0.3% + 0.3%/kHz

0.01V

Current

Fundamental

0.5A

0.1A

Harmonic 2 - 50

0.15A + 0.3% + 0.3%/kHz

0.1A

Note: Accuracy specifications are valid above 100 counts. For current and power measurements, specifications apply from 2% to 100% of measurement range.

Parameter

Specification

External Modulation:

0 to 10%

Synchronization Input:

Isolated TTL input for external frequency control. Requires 5V at 5 mA for logic high.

Trigger Input:

External trigger source input. Requires TTL level input signal. Triggers on negative edge. Response time 80 - 100 s.

Trigger Output:

Programmable through transient list system. 400 s pulse for voltage or frequency change. Isolated TTL output. Output reverts to Function strobe when not used as Trig Out. This function is mutually exclusive with the Function Strobe output.

Function Strobe:

Active for any voltage or frequency program change. 400 s pulse for voltage or frequency change. Isolated TTL output. This function is mutually exclusive with the Trigger Output. Same output is used for Trigger Output if Trigger Output is programmed as part of list system.

Output Status:

Monitors status of output relay. Isolated TTL output. High if output relay is closed, low if output relay is open.

Non volatile memory storage:

16 complete instrument setups and transient lists, 100 events per list.

Waveforms

Sine (Models with Standard controller) Sine, square, clipped, user defined (Models with Pi controller)

Transients

Voltage: drop, step, sag, surge, sweep

2.1.4 DC Measurements

2.1.5 Harmonic Measurements (Pi controller)

2.1.6 System Specification

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Parameter

Specification

Frequency: step, sag, surge, sweep Voltage and Frequency: step, sweep

IEEE-488 Interface:

SH1, AH1, T6, L3, SR1, RL2, DC1, DT1 IEEE 488.2 and SCPI Response time is 10 ms (typical)

RS232C Interface:

Bi-directional serial interface 9 pin D-shell connector Handshake: CTS, RTS Data bits: 7, 8 Stop bits: 1,2 Baud rate: 9600 to 115,200 bps Syntax: IEEE 488.2 and SCPI

USB Interface:

Standard USB 2.0 peripheral. Data transfer rate: 460,800 bps Syntax: IEEE 488.2 and SCP.

Note: Use of the USB port to control more than one power source from a single PC is not recommended, as communication may not be reliable. Use GPIB interface for multiple power source control.

Note: Not available on older MX15 models.

LAN Interface:

Option –LAN. When the LAN interface is installed, the RS232 interface is disabled.

RJ45 Connector, 10BaseT, 100BaseT or 1000BaseT, Data transfer rate: 460,800 bps Protocol: TCP/IP. Syntax: IEEE 488.2 and SCP Note: Disconnect any USB connection when using the LAN interface.

Current Limit Modes:

Two selectable modes of operation:

1. Constant current mode (voltage folds back with automatic recovery)

2. Constant voltage mode with trip-off (Relays open).

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Input Over current:

In-line fast acting fuses. Check fuse rating in Service and Maintenance section. Ratings will depend on AC input configuration settings.

Circuit breaker for LV supply.

Input Over voltage:

Automatic shutdown.

Input Over voltage Transients:

Surge protection to withstand EN50082-1 (IEC 801-4, 5) levels.

Output Over current:

Adjustable level constant current mode with programmable set point.

Output Short Circuit:

Peak and RMS current limit.

Over temperature:

Automatic shutdown.

Parameter

Specification

Dimensions: (for each MX chassis)

Height: 31.75” 806 mm Width: 24” 610 mm Depth: 28” 711 mm

Unit Weight: (for each MX chassis)

Net: 600 lbs / 272 Kg approximately Shipping: 681 lbs / 309 Kg approximately

Material:

Steel chassis with aluminum panels and covers.

Finish:

Light textured painted external surfaces. Panels semi-gloss polyurethane color no. 26440 (medium gray)

Cooling:

Fan cooled with air intake on the front and exhaust to the rear. Fans: 2 x 225CFM. Air displacement 7.5 Cu Ft/sec. Max.

Internal Construction:

Modular sub assemblies.

Rear Panel Connections:

(See section 3 for description of connections)

 Cable entry and strain relieve for AC input wiring  Cable entry and strain relieve for output wiring  External sense terminal block (Remote voltage sense)  System interface (2x)  Clock and Lock BNC's (requires -LKM or -LKS options)  RS232, USB, GPIB, LAN (option)  Trigger In BNC  Trigger Out BNC  Function Strobe BNC  Output Status

2.1.7 Unit Protection

2.2 Mechanical

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Parameter

Specification

Operating Temp:

0° to +40 C. (Except in CP mode). +32° to +104° F.

Storage Temp:

-40° to +85 C.

-40° to +185° F.

Altitude:

< 2000 meters

Relative Humidity:

0-95 % RAH, non-condensing maximum for temperatures up to 31C decreasing linearly to 50% at 40C.

Installation/Over voltage Category:



Pollution Degree:

Indoor Use Only

Vibration:

Designed to meet NSTA 1A transportation levels.

Shock:

Designed to meet NSTA 1A transportation levels.

Electromagnetic Emissions and Immunity:

Designed to meet EN50081-2 and EN50082-2 European Emissions and Immunity standards as required for the “CE” mark.

Acoustic Noise:

56 dBA maximum at 0% to 50% load, 68 dBA maximum greater than 50% load to 100% load. Measured at one meter.

Safety:

Designed to EN 61010-1 European safety standards as required for the “CE” mark.

Controls:

Shuttle knob:

Allows continuous change of all values including output calibration and range change.

Decimal keypad:

A conventional decimal keypad facilitates quick entry of numerical values such as voltage, current limit, etc. The large blue enter key will make the value you enter effective. Using the SET key allows the user to preset all parameter values and update them all at once by pressing the Enter key.

Up/down arrow keys:

A set of up and down arrow keys is used to move the cursor position in all menus. This allows quick selection of the desired function or parameter.

Function keys:

Measure key will display most measurement values. Program key will show all program parameters. Output on/off key for output relay control. Phase key will switch display to show program and measured values for each phase (not used on MX15).

2.3 Environmental

2.4 Regulatory

2.5 Front Panel Controls

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Displays:

LCD display:

A two-line LCD display with backlight provides easy to read guidance through all setup operations. An adjustable viewing angle makes it easy to read from all practical locations.

Status indicators:

Bright status indicators inform the user of important power source conditions. The Remote lamp informs the user that the unit is under remote control. The Overload lamp indicates that excessive current is being drawn at the output. The Over temperature lamp illuminates when internal heat sink temperatures are too high. The Hi Range indicator is lit any time the unit is switched to the high voltage range. The Output On/Off indicator is on when the power source output relays are closed.

Controller Features

Mode:

This option is not available for the MX15.

Parallel Operation:

Up to three units can be paralleled in a single-phase configuration (with one master controller and one or two auxiliary units). (MX30/2 and MX45/3). Only the master unit requires a controller in this setup. The auxiliary units are controlled through the system interface.

Clock and Lock Mode: (Option -LKM and -LKS required).

Up to three units (all with controllers) can be connected in a one, two, or three-phase configuration using CLOCK and LOCK connections. Each unit requires its own controller in this configuration. One unit acts as the master and provides the reference clock to the auxiliary units.

Controller:

Programmable controller front panel assembly.

Output Relay:

Standard output relay feature to isolate power source from the load.

Output On/Off:

The output relay can be used to quickly disconnect the load. An amber status indicator displays the status of the output relay.

Firmware Options

- 704

Mil Std 704D & E test firmware. Mil Std 704A, B, C, & F test software (refer to Avionics Software Manual

P/N 4994-971 for details). Note: Requires use of MXGui Windows application software provided on CD ROM CIC496.

- 160

RTCA/DO-160D test firmware RTCA/DO-160E test software (refer to Avionics Software Manual P/N

4994-971 for details).. Note: Requires use of MXGui Windows application software provided on CD ROM CIC496.

-411

IEC 61000-4-11 Voltage Dips and Interruptions Test firmware. Supported over remote control interface only.

-413

IEC 61000-4-13 Interharmonics Test Firmware. Supported over remote control interface only.

787

Boeing 787 Test software (refer to Avionics Software Manual P/N 4994971 for details).. Note: Requires use of MXGui Windows application software provided on CD ROM CIC496.

-ABD

Airbus ABD0100.1.8 Test software (refer to Avionics Software Manual P/N 4994-971 for details). Note: Requires use of MXGui Windows application software provided on

2.6 Special Features and Options

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CD ROM CIC496.

-WHM

Watt Hour Measurements (Accuracy and Resolution. See Sec. 2.6.5.)

Output Voltage Range Options

- HV

Adds 400 V AC only output range.

- XV

Adds customer specified AC only output range. Contact factory for details.

Misc. Options

-ES

Emergency Shut off switch. This option key lock push button is installed on the front panel of the master MX if ordered with the MX system. When pushed in, the main AC contactor is opened disconnecting the AC input power to the MX input transformer. Note that the controller (and LCD display) will still be powered up but no power is available to the amplifiers and there will be no output power either. The controller runs off the LV supply, which must be turned off with the front panel breaker.

After the ES has been pushed, the provided key will be required to release it. Once the ES button has been released, the MX must be powered down using the front panel circuit breaker and turned back on to start up again.

Note: Do not misplace the 2 keys provided, as no duplicates are available from CI. If lost, the ES switch must be replaced. In that case, contact AMETEK Programmable Power customer service. (service@programmablepower.com ).

-MB

Multi-box Option. Provides additional controllers in Auxiliary units of multi-cabinet configurations (MX30/2, MX45/3) to allow individual MX15 units to be used stand-alone.

-LF

Limits maximum output frequency to 500 Hz.

-HF

Increases maximum output frequency to 900 Hz.

External Accessories (External to MX chassis)

7003-416-1

Input / Output wiring junction box. Connects two to six three-phase

MX45 cabinet outputs, neutral and ground to a common output terminal block housed in a metal enclosure junction box. Can also be used to connect multiple MX chassis to common AC input service. See section 3.13 for details.

7003-424-1

Output noise filter, 3 phase + neutral. May be used to reduce output

noise of MX15 when testing EUT’s for conducted emissions. This is an

external filter that attenuates the 250 KHz ripple frequency on the MX output by > 20 dB. The filter is rated for 125A per phase and 800 Hz.

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Output Parameter

MX15

MX30/2

MX45/3

Modes

Pi Controller

Voltage:

Ranges (L-N):

0 -400 V

Resolution:

0.1 V

Accuracy:

± 0.4 V

Output Coupling

AC coupled

Power (total power for all phases, either range, at full scale voltage)

AC Mode

15 KVA

30 KVA

45 KVA

Current

Note: Current, maximum amps per phase available between 50 and 100 % of voltage range.

MX15-1

37.5 A

MX15-1 75 A

MX15-1

112.5 A

Peak Current

AC Mode

MX15-1

112.5 A

MX15-1 225 A

MX15-1

337.5 A

2.6.1 -HV Option Specifications

The -HV option provides an AC only output range of 0 to 400 Vac L-N. Specifications unique to the -HV option are shown in the table below.

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Current

(RMS)

Voltage (RMS)

100 200 300 400

37.5

37.5 A

-HV Range

Note: Output specifications apply below the Current / Voltage rating lines shown in the

V/I rating chart below.

Figure 2-5: MX15-1 Voltage / Current Rating Chart, -HV Option – Max. Rating.

Figure 2-6: Voltage / Current Rating Chart, -HV Option – Derated.

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-HF Option:

Frequency

Range:

-HF option: 16 Hz - 900 Hz

Resolution:

0.01 Hz < from 16.00 to 81.92 Hz

0.1 Hz > from 82.0 to 819.2 Hz 1 Hz > from 820 to 900 Hz

Accuracy:

± 0.01 %

Phase

Accuracy:

16 - 100 Hz: < 1.5° 100 - 500 Hz: < 2° 500 – 819 Hz: < 4° 819 – 900 Hz: < 5°

Voltage

High Voltage Range

Maximum voltage at 900 Hz is 290 Vrms Maximum frequency at 300 Vrms is 875 Hz See Figure 2-7

Low Voltage Range

Maximum voltage at 900 Hz is 145 Vrms Maximum frequency at 150 Vrms is 875 Hz See Figure 2-8.

-HV Voltage Range

Maximum voltage at 900 Hz is 386 Vrms Maximum frequency at 400 Vrms is 875 Hz .

Note: If the voltage or frequency settings shown here are exceeded for any length of time (> 1 sec), the MX may shut down generating an over temperature fault to protect itself.

2.6.2 -XV Option Specifications

Consult factory for -XV option specifications.

2.6.3 -HF Option Specifications

The -HF option extends the maximum available output frequency from 819 Hz to 900 Hz. Some restrictions are in effect at this increased output frequency level.

All other specifications of the MX15 system remain unchanged if this option is installed except as noted in the table below.

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Figure 2-7: -HF Option Voltage Frequency Rating 300V range

Figure 2-8: -HF Option Voltage Frequency Rating 150V range

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2.6.4 -LF Option Specifications

The -LF option limits the maximum available output frequency to 500 Hz. All other specifications of the MX15 system remain unchanged if this option is installed.

2.6.5 WHM Option Specifications

Watt-hour measurement mode: Accuracy:

0-6.000KW 0.01KWH + 0.1% <100 Hz

0.02KWH +0.1% 100-819 Hz >6.000KW Times three of the above specification

Resolution:

0.01 KWH

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-SNK Option: The following specifications apply to the AC mode unless specified otherwise

Frequency

Range:

-HF option: 16 Hz - 500 Hz

Resolution:

0.01 Hz < from 16.00 to 81.92 Hz

0.1 Hz > from 82.0 to 500.0 Hz

Accuracy:

± 0.01 %

Phase

Accuracy:

16 - 100 Hz: < 1.5° 100 - 500 Hz: < 2°

Voltage

Distortion THD1: (Resistive full load)

< 1 % @ 16 - 66 Hz < 2 % @ 66 - 500 Hz

Power

Capability (AC & DC)

Full power can be returned into MX as long as current does not exceed maximum current limit setting for selected range. See REGENERATE CONTROL screen for protection settings in REGEN mode.

Without –SNK option

MX units without the SNK will generate a warning message (Error 31) if more than 20% of available power (per phase) is regenerated by the load. It will shut off (Error 32) if the negative power reaches 30% of available power.

Programmable Output Impedance (available on MX15-1Pi, MX30-30Pi and MX45-3Pi only)

Auto-disabled

Programmable impedance is turned off as soon as a regenerative load is detected. Once turned off, it will remain off until programmed by user again. This is required as programmable impedance is based on delivering current which is not the case when driving a regenerative load.

Measurements

Power

Regenerated power is displayed with a negative sign to indicate direction of power flow.

2.6.6 SNK Option Specifications

The –SNK or current sink option enables the MX power source to sink current from the unit under test. This mode of operation is particularly useful when testing grid-tied products that feed energy back onto the grid. The ability of the MX to simulate the grid provides unique opportunities to test the EUT for compatibility to commonly occurring line anomalies like voltage and/or frequency fluctuations. Examples of these types of EUT are inverters (PV Solar, Wind) hybrid drive systems, regenerative breaks.

The SNK option requires special amplifiers that have a different control loop from the standard MX amplifiers. In the AC mode the upper frequency limit of an MX configured with the –SNK option is 500Hz as opposed to the standard 819Hz. Also, the voltage distortion levels are slightly higher than on MX units without this option.

All other specifications of the MX system remain unchanged if this option is installed.

The distortion specification for the MX Series is valid for pure (inductance < 12 uH) resistive load conditions and

using a 30 KHz LP filter on distortion meter.

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Output Parameter

MX15

MX30/2

MX45/3

Voltage:

Slew rate:

> 0.5 V/micro sec

Stability:

0.25 % over 24 hour period at constant line, load and temperature.

Settling time:

< 0.5 msec

Frequency:

Temperature coefficient:

 5ppm per degree C

Stability:

 15 ppm per year

Current:

Constant Power Mode:

Acoustic Noise:

Measured at a distance of one meter. (3 ft.)

Front

53 dBA at no load to 65 dBA at full load.

Back

55 dBA at no load to 67 dBA at full load

2.7 Supplemental Specifications

Supplemental specifications are not warranted and generally reflect typical performance characteristics. These characteristics are have been checked on a type test basis only and are not verified on each unit shipped. They are provided for reference only.

2.7.1 Output

2.7.2 Acoustic Noise Levels

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MX Filter Specifications (Model 7003-424-1)

Type

Low Pass Filter

Three phase WYE, four wire. (A, B, C and Neutral)

Capability

Frequency range

DC, 16 Hz - 800 Hz

Max Voltage

250 Vrms Line to Neutral / 440 Vrms L-L

Phase Current

125 Arms per phase maximum.

Impedance

Voltage drop at 800 Hz, 125 A is less than 1 Vrms.

Performance

Attenuation

20 dBuV at 250 KHz.

Physical

Enclosures type

Cooper B-Line P/N 16126 SC NK

Dimensions (W x D x H)

Unit: 16” x 12” x 6” / 406 mm x 305 mm x 152 mm Shipping: 30” x 25” x 11” / 760 mm x 635 mm x 280 mm

Weight

Net: 28 lbs / 12.7 Kg Shipping: 40 lbs / 18.2 Kg

Operating Temp:

0° to +40 C. / +32° to +104° F.

2.7.3 Output Noise Spectrum

The MX series is a switching power supply and as such will have a certain amount of switching noise at its output. While the overall RMS noise is specified, the specific noise spectrum will differ slightly from unit to unit. The information provided in this section is for reference only.

The output noise can be reduced by using one or more external filters. A suitable filter is the P/N 7003-424-1 (Figure 2-9) available from AMETEK as an option. Attenuation at the 250 kHz ripple frequency is 20 dBuV. The output voltage drop at 800 Hz full load is less than 1Vrms.

Typical output noise spectrum for a standard MX45-3Pi in three phase mode operating at 400 Hz is shown in Figure 2-10 for phase A and Neutral. The same output with the use of the optional filter is shown in Figure 2-11. For connection information, refer to section 3.14. The MX15 and MX45 use the same amplifier so results will be similar.

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Figure 2-9: MX output filter option schematic

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Figure 2-10: MX45 Output Noise 10 KHz – 1 MHz

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Figure 2-11: MX45 Output Noise 10 KHz - 1 MHz with optional Filter

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3 Unpacking and Installation

3.1 Unpacking

Inspect the unit for any possible shipping damage immediately upon receipt. If damage is evident, notify the carrier. DO NOT return an instrument to the factory without prior approval. Do not destroy the packing container until the unit has been inspected for damage in shipment. If possible, retain the container (wooden crate) in the event the system ever has to be returned to the factory for either repair or upgrades

WARNING: This power source weighs approximately 600 lbs / 272 Kg. Obtain

adequate help when moving the unit. Make sure the location (floor) in which the MX Series unit(s) will be installed can support the weight of the unit(s).

3.2 Power Requirements

The MX Series power Source has been designed to operate from a three-phase, three wire (Wye or Delta) AC input line. A protective earth connection is required as well. (PE).

Available three-phase input settings are 208 V (option -400), 440 V

(option -440), or 480 V

Figure 3-1: The MX15 Power Source

(option -208), 230 V

(option -480).

(option -230), 400 V

CAUTION: Do not connect 400, 440, or 480V into a unit set for 208 or 230V unit, the

result could be a severely damaged unit. Always check the input rating on the model number tag before connecting AC input power. Consult factory if input settings have to be changed.

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3.3 Mechanical Installation

The MX's are completely self-contained power sources. They are to be used free standing on a solid surface. The units are fan cooled, drawing air in from the front and exhausting at the rear. The front and back of each unit must be kept clear of obstruction and a 6” clearance must be maintained to the rear. Special consideration of overall airflow characteristics and the resultant internal heat rise must be considered at all times to avoid self heating and over temperature problems.

3.4 AC Input Connections and Wiring

Three-phase Delta or Y AC input voltage of sufficient amperage (consult AC input specifications for maximum AC current per phase) is required to power the MX Series.

Note: AC power should be routed through a properly sized and rated three-phase

PROTECTIVE CIRCUIT BREAKER or similar branch circuit protection device with disconnect capability. This will protect building wiring and other circuits from possible damage or shutdown in case of a system problem. It will also facilitate removing AC input power to the MX system in case of service or reconfiguration requirements.

Note: AC input wiring and connections must conform to local electrical safety codes

that apply. Always consult a qualified electrician prior to installation of any MX System.

AC input connections are to be made directly to the input fuse block. The input fuse block is located on the lower right hand corner of the back of the MX15 chassis. To access the input fuse connection block, the protective rear cover needs to be removed first.

CAUTION: Always disconnect any input power completely when removing

any protective cover and allow the internal capacitors to fully discharge (minimum of 15 mins) before removing any cover. See Figure 3-2 for details.

No wiring for AC input connections is provided with the MX Series and must be provided by the end user or installer. Input wiring should be entered through the right hand side (when facing the back of the MX cabinet, see Figure 3-4) wire access opening located at the rear bottom of the MX15 chassis.

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Figure 3-2: Location of AC Input Fuse Block and Chassis Ground Connection -

Rear View, Access Panel Removed

Note: To comply with product safety requirements, EARTH GROUND must be connected

to the chassis of the AC power system using the ground stud located directly below the inrush resistors. Use a Green/Yellow ground wire.

Note: DO NOT USE THE NEUTRAL CONNECTION OF A 3 PHASE Y AC POWER

CONNECTION IN PLACE OF A TRUE EARTH GROUND CONNECTION. AC power system neutrals cannot be used for protective earth ground.

The mains source must have a current rating equal to or greater than the input fuses and the input wiring must be sized to satisfy the applicable electrical codes. The rear cover must be reinstalled prior to use and the strain relief provisions located at the rear bottom of the unit must be used to maintain protection against hazardous conditions.

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Figure 3-3: MX Series AC Input Connection Diagram (Rear view)

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Nominal Line

Voltage

Load Current

@ low line

Wire Gauge (US)

Circular Mils

(Kcmils)

Metric (mm2)

480 V

25 Arms

8 AWG

11.50

5.8

400 V

30 Arms

8AWG

11.50

5.8

230 V

52 Arms

8 AWG

18.00

9.1

208 V

58 Arms

6 AWG

26.24

13.3

The input power cables and protective circuit breaker used must be large enough to handle the input current and input voltage of the power source and must conform to local electrical codes. Consult a qualified electrician prior to installation. Table 3-1 shows the size of the cables that may be used per MX15 cabinet. Note that wires must be sized to accommodate the worst-case maximum current that may occur under low line conditions. Local electrical codes may also require different wire types and sizes. These ratings should also be used when selecting a circuit breaker or equivalent disconnect device.

Cable lengths must not exceed twenty-five (25) feet. For lengths greater than 25 feet, calculate the voltage drop from the following formula:

2 X DISTANCE X CABLE RESISTANCE PER FT. X CURRENT = VOLT DROP

Table 3-1: Suggested Input Wiring Sizes for each MX Cabinet *

* Using high temperature rated wire. Always consult the National Electrical Code and/or local code regulations for proper rating and size of wire cabling prior to installation.

CAUTION: Capacitors in the power source may hold a hazardous electrical charge

even if the power source has been disconnected from the mains supply. Allow capacitors to discharge to a safe voltage before touching exposed pins of mains supply connectors. Power modules need at least 15 Minutes to discharge to safe levels before they can be removed.

3.5 AC On/Off Circuit Breaker on MX Series front panel.

It is important to understand the purpose and operation of the On/Off circuit breaker of the MX15 located on the left side of the front panel. This is a 2A rated breaker that is used to engage and protect the LV Power supply of the MX15 chassis only. The LV Power supply provides DC bias power to the entire MX15 system. The AC input power is routed through a set of three AC line fuses (F1, F2 and F3) located in the lower right bottom corner of the MX15. (See Figure 3-2 for fuse locations). These fuses protect the MX amplifier and the AC input transformer from excessive input currents. The AC input power is connected to the input transformer through a large three-pole contactor. Removing AC power to the LV Power Supply by opening the front panel circuit breaker (moving the lever to the down (OFF) position) will cause this contactor to loose its coil voltage and will result in it opening and disconnecting the input transformer and amplifier from AC mains input.

Note: If any MX15 system failure has occurred on any part of the MX15 system, AC input

power must be removed immediately and not restored until the system has been inspected by a qualifier service technician. Always turn off the On/Off Circuit breaker before re-applying AC input power.

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CAUTION: The AC input fuses can only be checked if the MX unit is completely

de-energized and disconnected from any AC power input.

Note: Under no circumstances should AC input power be applied if one or more of the

AC input line fuses have failed and opened up.

Figure 3-4: Rear Panel

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Shield Connection

3.6 Output Connections

3.6.1 Output Wiring

The output terminal block, TB1, is located at the back of the unit behind the bottom access panel. See Figure 3-2 for details.

Single phase output line connections are made to terminal block TB1. The outputs are labeled HI and LO.

The external sense inputs allow the power system output voltages to be monitored directly at the load and must be connected at TB2 when the sense is programmed for external. The external sense input does not have to be connected when Internal Sense is programmed. The external sense wires are to be connected to TB2 on the rear panel and should be run using a twisted shielded cable. See Figure 3-4 for location of TB2 and Figure 3-5 for shield connection detail.

Note: For External Sense connection, a shielded cable MUST be used with the shield

connected to chassis ground at the Ext. Sense connector. (See Figure 3-5).

External sense is recommended for multi-cabinet systems where the output wiring from the cabinets to the common output terminal block supplied is not of equal length.

Figure 3-5: External sense cable shield connection to chassis ground

Note: The output of the power source is isolated from the input line and floating with

respect to chassis ground. If needed, either side (HI or LO) may be grounded.

If the EUT changes frequently, you may want to consider using some quick disconnect scheme external to the MX15 so it will not be necessary to power down the MX15 and remove the front covers. This can take the form of a panel-mounted socket of sufficient current and voltage rating. (Not supplied with MX15)

The output power cables must be large enough to prevent a total voltage drop exceeding 1% of the rated output voltage between the power source and the load. Table 3-2 shows the size of the cables that may be used. Note that wires must be sized to accommodate the maximum current that is available. Size the wires for the lowest available voltage range as the currents will be highest in that range.

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Load Current

Wire Gauge (US)

Circular Mils

(kcmils)

Metric (mm2)

65 AMPS

6 AWG

26.24

13.3

130 AMPS

4 AWG

41.74

21.1

Cable lengths must not exceed twenty-five (25) feet. For lengths greater than 25 feet, calculate the voltage drop from the following formula:

2 X DISTANCE X CABLE RESISTANCE PER FT. X CURRENT = VOLT DROP

Table 3-2: Suggested Output Wiring Sizes *

Note: Use high temperature rated wire. Always consult the National Electrical Code

and/or local code regulations for proper rating and size of wire cabling prior to installation.

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Output Terminal Blocks

The MX15-1 and the MX15-1Pi have one output terminal block. The terminal block is large enough to accommodate the recommended wire gauge sizes shown in Table 3-2. The terminal block is located in the lower left corner on the rear of the unit. The rear panel needs to be removed to access this terminal block.

CAUTION: REMOVE ALL INPUT POWER TO THE MX15 BEFORE

REMOVING THE REAR PANEL.

The correct standard size Allen wrench for connecting output wiring to TB1 is supplied with each MX15 in the ship kit. Look for a brown envelope. If the correct tools cannot be found, contact AMETEK Programmable Power customer service at service@programmablepower.com .

Terminal 2 of TB1 provides the output LO connection, and terminal 1 of TB1 provides the output HI connection. The location of TB1 is shown in Figure 3-2.

3.6.2 MX15-1, MX15-1Pi Output Wiring Diagram

Figure 3-6 shows the required output connections for a MX15-1 and MX15-1Pi (rear-view perspective).

Always disconnect all input power from the MX before removing the rear panel cover that provides access to the input and output terminal connections.

Figure 3-6: MX15-1 Output Wiring (Rear view)

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3.6.3 MX30/2 Output Wiring Diagram

Figure 3-7 shows the required output connections for an MX30/2-1 single-phase output configuration (rear-view perspective). Always disconnect all input power from the MX30/2 before removing the rear panel cover that provides access to the input and output terminal connections. MX30/2 systems are shipped with external output terminal blocks that enable the output wiring from two or three chassis to be combined, providing a single point of connection to the EUT. These blocks are not enclosed however.

Figure 3-7: MX30/2 or MX30/2-MB Output Wiring (Rear view)

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Figure 3-8: Two MX's in Clock and Lock mode Output Wiring (Rear view)

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MX135 Output Wiring Diagram

Figure 3-9 shows the required output connections for an MX45/3-1Pi or MX45/3-1Pi-MB single-phase output configuration (rear-view perspective). Always disconnect all input power from the MX45/3 before removing the rear panel cover that provides access to the input and output terminal connections. Note that the master is shown in the center in this drawing. MX45/3 systems are shipped with external output terminal blocks that enable the output wiring from two or three chassis to be combined, providing a single point of connection to the EUT. These blocks are not enclosed however.

Figure 3-9: MX45/3 or MX45/3-MB Output Wiring (Rear view)

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Figure 3-10: Three MX's in Clock and Lock mode - Output Wiring (Rear view)

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3.6.4 Multi-Chassis Output Connections

If two or more MX15 chassis are used to form a single power system, the outputs of all chassis need to be combined (paralleled). This can be done directly at the EUT if convenient or using the provided heavy-duty terminal block. One 2-position block is provided. This block allows up to four wires to be combined into one larger wire gauge size wire. The outputs of the 2 or 3 MX15 chassis are connected on one side of these blocks. The EUT can be connected to the other side. Note that the wire size to the EUT should be sized up to accommodate the double or triple currents per phase.

The dimensions of the supplied terminal block are shown in Figure 3-11.

Figure 3-11: Ship kit Terminal Block dimensions

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P8 / P9

Description

OUTP: Output ON. Controls state of output relay

N/C 3 N/C 4 N/C 5 COM: Common. Signal return.

OT: Over temperature. Indicates over temperature condition.

N/C 8 CLB: Current Limit B. (Not Used)

CSA: Current Sum Phase A

CSC: Current Sum Phase C (Not Used)

FLT A: Amplifier Fault Phase A

FLT C: Amplifier Fault Phase C (Not Used)

XFMR: Optional voltage range select. (-HV or -XV option)

PARALLEL: Parallel operation control. (Not Used)

INPUT ON: Input power status

A ERR LO: Error Signal Phase A, low

B ERR HI: Error Signal Phase B, high (Not Used)

N/C

C ERR LO: Error Signal Phase C, Low (Not Used)

300 VRNG: 300 V AC Range Select

3.7 Connectors - Rear Panel

A number of connectors are located along the top rear covers. These connectors are in a recessed area to protect them from shipment damage.

3.7.1 System Interface

WARNING: The system interface connectors are for use with AMETEK supplied

cables, and only between California Instruments equipment.

The Clock and Lock BNC connectors located on the rear panel are used to synchronize and control the phase shift between the three outputs when 3 units are operating as a three-phase clock and lock system. This mode of operation requires the -LKM (on Master unit) and -LKS (on Auxiliary units) options. See paragraph 3.10 for more information on this mode of operation.

A set of two identical System Interface connectors, P8 and P9 is located on the rear panel of each MX15 chassis. The system interface is used to connect the multiple MX15 power sources in a Master/Auxiliary configuration to create MX30/2 or MX45/3 models. In these configurations, only the Master MX15 power source has a built-in controller and front panel.

The same connector is also used to control the optional OMNI-3-75 Reference Impedance.

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P8 / P9

Description

COM: Common. Signal return.

/REM OFF: Remote Off Control not

COM: Common. Signal return

FLK/BYP: Flicker / Bypass OMNI control

/OVL: Overload not

CLA: Current Limit A. Programmed current limit reference for phase A

CLC: Current Limit C. Programmed current limit reference for phase C (Not Used)

CSB: Current Sum Phase B. (Not Used)

N/C

FLT B: Amplifier Fault Phase B (Not Used)

N/C

DC: DC mode control

INP OFF: Input power control

A ERR HI: Error Signal Phase A, high

N/C

B ERR LO: Error Signal Phase B, low (Not Used)

C ERR HI: Error Signal Phase C, high (Not Used)

Description

RPV HI. INPUT: Analog input for External Modulation

RPV Lo. INPUT: return.

EXT SYNC HI INPUT: Analog input for external sync mode.

EXT SYNC Lo INPUT: return.

RI: INPUT: Remote Inhibit. (See paragraph 3.12.)

RI: INPUT: return.

3.7.2 Analog Input Connector

Input screw-terminal strip. Functions are called out on rear panel decal. Table shows connections from left to right when standing at the rear of the MX15 cabinet.

Table 3-3: System Interface Connectors

Table 3-4: Analog Interface Connector

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BNC

Description

Trigger Input (TTL input)

Trigger Output (TTL output) (Same signal connection as Function Strobe. Some units

may not have this output connected. If you don’t get an output trigger on this BNC, use

the Function Strobe BNC instead.)

Function Strobe (TTL output) (Same signal connection as Trigger Output)

Clock (TTL output on Master / TTL input on Auxiliary)

Lock (TTL output on Master / TTL input on Auxiliary)

Description

Phase A sense

N/C 3 N/C 4 Neutral sense

3.7.3 BNC Connectors

BNC connectors. Functions are called out on rear panel decal. Table shows connections from left to right when standing at the rear of the MX15 cabinet.

Table 3-5: BNC Connectors

3.7.4 External Sense Connector

Table 3-6: External Sense Connector

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Name

Direction

N/C 2

TxD

Output

RxD

Input

N/C 5

Common

N/C 7

CTS

Input

RTS

Output

N/C

Name

Direction

N/C 2

RxD, Receive data

Output

TxD. Transmit data

Input

DTR, Data Terminal Ready

Common

N/C

N/C 7 RTS, Request to Send

Output

N/C

N/C 9 N/C

N/C

3.7.5 RS232C Serial Interface Connector

An RS232 serial interface connector is located on the rear panel on all models. Note that two versions of the RS232 exist on the MX model series depending on the age of the unit. Older models can be identified by the fact that they will not have a USB interface.

Table 3-7: RS232 Connector pin out – MX with RS232 and USB.

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Table 3-8: RS232C Connector pin out – MX with RS232 but no USB

On MX models without a USB interface, a special RS232 cable is required to connect to a PC. With these MX models, a special 13 foot / 4 meter long cable is supplied in the MX Series shipkit. The wiring diagram for this cable is shown below in case a longer cable has to be constructed. Alternatively, a generic straight thru DB9 male to DB9 female cable can be used to extend the supplied cable.

MX models that have both RS232 and USB interface use a more common straight through DB9 male to DB9 female serial cable, which is supplied in the MX ship kit for these models.

User Manual – Rev M California Instruments

DB-9 PC

DB-9 AC Source

1 2 3 4 5 6 7 8 9

Direction output input output output

input

output

Description reserved Receive data(RxD) Transmit data (TxD) Data Terminal Ready (DTR) Signal Ground Data Set Ready (DSR) no connect no connect reserved

Figure 3-12: RS232C Cable for PC Connection wiring diagram – MX without USB.

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Name

Description

VBUS

+5 VDC 2 D-

Data - 3 D+

Data + 4 GND

Ground

3.7.6 USB Interface

A standard USB Series B device connector is located on the rear panel for remote control. A standard USB cable between the AC Source and a PC or USB Hub may be used.

Note: Use of the USB port to control more than one power source from a single PC is

not recommended, as communication may not be reliable. Use GPIB interface for multiple power source control.

Figure 3-13: USB Connector pin orientation.

Table 3-9: USB Connector pin out.

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Ethernet TPE 10BaseT/100BastT/1000BaseT

EIA/TIA 568A

EIA/TIA 568B Crossover

Transmit/Receive Data 0 +

White with green stripe

White with orange stripe

Transmit/Receive Data 0 -

Green with white stripe or solid green

Orange with white stripe or solid orange

Transmit/Receive Data 1 +

White with orange stripe

White with green stripe

Transmit/Receive Data 2 +

Blue with white stripe or solid blue

Transmit/Receive Data 2 -

White with blue stripe

Transmit/Receive Data 1 -

Orange with white stripe or solid orange

Green with white stripe or solid

Transmit/Receive Data 3 +

White with brown stripe or solid brown

Transmit/Receive Data 3 -

Brown with white stripe or solid brown.

Brown with white stripe or solid brown

3.7.7 LAN Interface – RJ45

An optional RJ45 Ethernet 10BaseT connector is located on the rear panel for remote control. A standard RJ45 UTP patch cord between the AC Source and a network Hub may be used to connect the AC source to a LAN. For direct connection to a PC LAN card, a crossover RJ45 cable is required. Consult your network administrator for directions on connecting the AC source to any corporate LAN.

If the –LAN Ethernet interface option is present, the MAC Address (Media Access Control) of the Ethernet port is printed on the serial tag of the power source. The serial tag is located on the rear panel of the unit.

For information on how to set up a network connection or a direct PC connection using the LAN interface, refer to the MX Series Programming Manual P/N 7003-961 distributed in Adobe PDF format on CD ROM CIC496.

LAN

Table 3-10: RJ45 LAN Connector pin out.

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Top View from back of MX15 Chassis

3.8 Multiple Cabinet System Configurations (incl. –MB)

Multi-cabinet MX models consist of two or three autonomous or Auxiliary MX15-1Pi units. Auxiliary units do not have their own controller and are identified easily by their blank front panel. Master units each have their own controller but can be configured as auxiliary units by disconnecting the ribbon cable marked J17 between the controller and the system interface board (P/N 7005-701-1). This disables the controller and allows the MX15 to operate as an Auxiliary unit. (Requires removal of the top cover)

When used as a multi-cabinet system for higher power applications, the controllers in the unit(s) acting as the auxiliary to the master are either disabled or not present.

In addition to disabling the controller if present (as described above), the DIP switch (S1), located on the GPIB / RS232C / IO assembly in the auxiliary cabinets, settings need to be changed. (Requires removal of the top cover). The correct switch settings are shown below. (shown set for Master cabinet). Note that all units must be powered down before reconfiguring. Also, the output wiring must be changed to accommodate the new configuration.

Note: If the units being re-configured for multi-cabinet operation were not factory

configured this way, it may be necessary to balance the amplifiers by adjusting their gain. Refer to section 6.4 for details on Amplifier balancing.

When used as a multi-cabinet system, the system interface cables must be connected between the master and the auxiliary cabinets.

Figure 3-14: Multi-Cabinet DIP Switch Location and Setting

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3.9 Multiple Cabinet Power Up/Down Procedures

For all multi-cabinet MX Series configurations (MX30/2, and MX45/3), the following Power Up (Turn on) and Power Down (Turn off) procedures should be observed.

3.9.1 Power Up Procedure

Follow these steps:

1. Turn on each of the Auxiliary units using the front panel circuit breaker, one at a time. The exact order for turning on the auxiliary units is not important. Note that the bias supplies of each of the auxiliary cabinets will power up but not the actual amplifiers. This is because the auxiliary units are waiting for the turn on signal from the master unit.

2. Once all auxiliary units are on, turn on the MASTER unit LAST using the front panel circuit breaker. The master unit will go through an initialization process and power up itself plus the auxiliary units.

3. Allow 20 to 30 seconds for the turn on sequence to complete before attempting to communicate with the system.

3.9.2 Power Down Procedure

The power-down / shutdown sequence for the system is the reverse of the power-up / turn-on sequence. This means the MASTER unit is turned off FIRST. Once the MASTER shuts down,

all auxiliary units’ main AC input power contactors will open up automatically. They still need to

be turned off individually using the front panel circuit breaker. This will shut down their bias supplies as well.

Follow these steps:

1. Disconnect the EUT by opening the MX15 output relay. Use the Output On/Off button on the master unit front panel or send the “OUTPUT 0” command over the bus to do so.

2. Turn off the MASTER unit FIRST using the front panel circuit breaker. The master unit will disengage the main AC power input contactors of all auxiliary units at this time.

3. Next, turn off each of the Auxiliary units using the front panel circuit breaker, one at a time. The exact order for turning off the auxiliary units is not important.

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CONFIGURATION Field

Parameter

Description

CLOCK/LOCK

N/A

Clock and Lock option is disabled

Clock and Lock option is enabled and can be turned on in the MODE field of the CONTROL menu.

3.10 Clock and Lock Configurations

The MX15 Series may optionally be equipped for clock and lock mode of operation. This mode is a special form of Master/Auxiliary, which requires each chassis to have its controller. As such, it is possible to create 1, 2, or 3 phase power systems using 2 to 3 MX15 chassis. For most singlephase configurations, the normal multi-box mode of operation as described in section 3.7.5 is recommended as it provides a single controller (and remote control interface).

In a clock and lock configuration, each unit has its own front panel controls (as well as individual remote control interfaces) for operating the supply but the output frequency of the auxiliary unit(s) (-LKS option) is synchronized (locked) to the Master MX unit (-LKM).

This mode of operation requires that one MX15 has the -LKM (Lock Master) option and one or two MX units have the -LKS (Lock auxiliary) option.

3.10.1 Clock/Lock Configuration Settings

Clock and lock configuration settings for -LKM and -LKS equipped MX15's are set at the factory at the time of shipment and cannot be changed. To check the configuration settings for an MX15, select the OPTIONS screen. In the options screen, the CLOCK/LOCK entry determines if the unit can be set as a Master or Auxiliary as follows:

Note that the actual mode of operation of a Clock/Lock MX15-LKS auxiliary unit is determined by the Clock mode set in the CONTROL menu. For clock and lock mode of operation, the CLOCK field is set to EXT.

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INITIAL SETUP 3 Field

Parameter

Description

CLK/LOC

STAN

Normal stand alone mode of operation. For standard MX15 power source with no clock and lock mode of operation.

MAST

For master (-LKM) power source in clock and lock mode of operation.

AUX

For auxiliary (-LKS) power source in clock and lock mode of operation. Powers up with clock mode set to external.

3.10.2 Clock/Lock Initialization Settings

The mode of operation of the MX15 is determined by the MODE setting in the CONTROL menu. If the clock and lock option is enabled, three choices will be available for this field: STAN, MAST, and AUX. Changing the MODE to either MAST or AUX will cause the power source to power on in clock and lock mode.

Available initial settings and their relationship to the Clock and Lock mode of operation are shown in the table below.

Table 3-12: Clock and Lock Initialization settings

3.10.3 Clock/Lock and External Sync Mode

Note that an MX15-LKS auxiliary unit is factory configured to operate in Clock and Lock mode when EXT clock mode is selected. This means that an MX15-LKS cannot be used in normal external sync mode. However, the MX15-LKM master unit can be operated in external sync mode.

Furthermore, since the MX15-LKM master unit is factory set for Master mode of operation, it in turn cannot be used as an Auxiliary source in a clock and lock configuration.

Note: When the clock and lock option is enabled, each power source will have all three settings available in the MODE field. The master box must be set to either STAN or MAST and the auxiliary box must be set to either STAN or AUX or the clock and lock feature will not work correctly.

3.10.4 Remote Programming of Clock and Lock systems

Since clock and lock systems have multiple autonomous controllers that are synchronized in frequency, remote programming of these systems requires that the application program deal with all MX controllers. This often precludes the use of RS232C as generally not enough serial ports are available. The use of GPIB instead also offers the advantage of using the Group Execute Trigger (GET) capability to effect output changes on all phases (MX's) simultaneously which is otherwise difficult to do.

To set up a GPIB remote controlled clock and lock systems, the GPIB addresses for the individual MX's must be set to different address values in the CONFIGURATION menu.

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Note: This mode of operation is not supported by the MXGUI Windows software

supplied with each MX15 unit.

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3.11 Basic Initial Functional Test

CAUTION: Work carefully when performing these tests; hazardous voltages

are present on the input and output during this test.

Refer to Figure 3-15 for the required functional test set up. Proceed as follows to perform a basic function check of the power system:

1. Verify the correct AC line input rating on the nameplate of the MX unit(s) and make sure the correct three-phase line voltage is wired to the input of the MX before applying input power.

2. Connect a suitable resistive or other type load to the output of the MX. The load resistance value will depend on the voltage range you plan to check. Make sure the power resistor has sufficient power dissipation capability - up to 15 KW for full load test.

3. Connect an oscilloscope and DMM / voltmeter to the AC source output. Set both for AC mode.

4. If the correct voltage is present, turn on the MX unit(s) by closing the On/Off circuit breaker on the front panel. For multi-cabinet systems, turn on the auxiliary unit first and wait for them to cycle on, then turn on the master unit.

5. Set the output voltage to 0 volt and close the output relay with the OUTPUT ON/OFF button. There should be little or no output although the DMM may show a noise level, especially if the DMM is in auto ranging mode.

6. Move the cursor to the VOLTAGE field in the PROGRAM 1 screen and either use the keyboard to program a small voltage (20 VAC) or slew the voltage up slowly with the knob. Observe the DMM reading. The reading should track the programmed voltage.

7. Also monitor the scope. The output should be a sinusoidal voltage waveform.

8. If the output tracks, increase the voltage until you reach 80 % of the voltage range or more. Check the output voltage reading and waveform.

9. Select the MEASUREMENT screen by pressing the MEAS button. The output voltage, current and power will be displayed.

In the unlikely event the power source does not pass the functional test, refer to the calibration procedure in Section 6 or call California Instrument’s customer satisfaction department for further assistance.

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Figure 3-15: Functional Test Setup.

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3.12 Remote Inhibit / Remote Shutdown

It may be necessary to provide a remote shutdown of the AC or DC output of the MX. The external remote inhibit input may be used for this purpose (RI). This input is also referred to as remote shutdown.

The default mode of operation for the RI input is a contact closure between pins 5 and 6 (return) of the rear panel screw-terminal strip. This will open the output relay of the MX. The same can be accomplished with an active low TTL input signal.

It is possible to reverse the polarity of the RI input. This requires the use of the following bus command:

OUTPut:RI[:LEVel] HIGH /* Sets RI polarity to active high. OUTPut:RI[:LEVel] LOW /* Sets RI polarity to active low (Factory default)

Either the RS232, USB, LAN or GPIB interface must be used to perform this setting. Once set, the polarity setting remains in effect.

When set to HIGH, an active low TTL level or a contact closure is required to enable the output relay of the MX. Opening the contact or removing the low input signal will cause the output relay to open.

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3.13 Junction Box Accessory

An optional wiring junction box (P/N 7003-416-1) is available which may be used to connect the outputs of 2 to 6 MX cabinets together. The junction box also has a protective ground connection, which MUST be connected to a suitable protective earth ground.

Each junction box has four sets of terminals for phase A, phase B, phase C and Neutral. For MX15 application, only phase A and Neutral connections will be made. Each terminal is lined up with a strain relief on each side. The outputs from the MX15 cabinets connect to the “MX

SYSTEM OUTPUT” side of these terminal blocks. The load can be connected to the “LOAD”.

Note that the wiring is not supplied with the system and must be provided by the end user. The wire gauge of the load connection must be sized to handle the maximum current in the low voltage range of operation.

The “MX SYSTEM OUTPUT” side of the terminal block will accept up to 8 wires. If the external

sense connection is made at the junction box, one of these can be used to connect the sense wiring.

Note: Do not swap output load wires or sense wires between phases, as damage to the system will result.

The “LOAD” side will accept 2 wires. The wire size range shown in Figure 3-16 refers to mechanical compatibility of terminal block only. This information does not reflect required wire size.

The wire sizes accepted by the terminal blocks of the junction box on each side are shown in Figure 3-16.

Figure 3-16: 7003-416-1 Output Junction Box

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To MX15 Output

3.14 Output Filter Box Accessory

An optional output filter box (P/N 7003-424-1) is available which may be used reduce the amount of ripple and noise present at the output of the MX15-3Pi.

The filter must be connected between the single-phase output of the MX15 and the unit under test. To access the connection terminal blocks, the top cover of the filter case must be removed.

Note: Make sure all power is off when connecting the filter accessory.

The output of the MX15 is connected to the input side of the filter. Use terminal blocks TB1A (phases A and B) and TB1B (phase C and neutral) as indicated in Figure 3-17. For MX15 application, only phase A and Neutral connection will be made. The load can be connected to the load side of the filter box using terminal blocks TB2A and TB2B. Do not swap phases through the filter.

To compensate for voltage drop across the filter, the external sense connections can be made at the load (load side of the filter).

Note: The filter box chassis must be connected to earth ground.

It is not recommended to use the ground connection on the MX15 itself for this purpose but rather a ground point at the AC service to the MX15.

Figure 3-17: 7003-424-1 Output noise filter box.

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4 Front Panel Operation

4.1 Tour of the Front Panel

The MX Series with type P or type Pi have identical front panels although some of the keys found on the front panel are only used by MX models with the Pi controller. If your unit is a P type

controller, these keys will act as don’t cares. This chapter provides information on operating the

MX with either controller type. Before operating the AC source using the front panel, it helps to understand the operation of the

front panel controls. Specifically, the operation of the knob, keyboard and the menu layout are covered in the next few paragraphs.

4.1.1 Front Panel Controls and Indicators

The front panel can be divided in a small number of functional areas:

 Mains circuit breaker  Status Indicator lights  Shuttle knob  LCD display  FUNCTION keypad  DATA ENTRY keypad

4.1.2 System On/Off Circuit Breaker

The circuit breaker located on the left side of the front panel disconnects the low voltage supply of the MX Source from the three phase Line input. This will remove power from the mains AC input contactor and thus remove input power from the MX Series power source. As such, the circuit breaker acts as an indirect power on/off switch for the MX Series unit. Note however that an AC input power remains applied to the primary side of the input transformer.

When the input current rating of the MX Series AC power source is exceeded, the protective fuses (XF1 through XF3) will blow. In this case, power to the low voltage supply may still remain through the front panel circuit breaker. In this case, the on/off circuit breaker should be opened (power off) first followed by a complete disconnect of all ac input power through an installed main circuit breaker.

Note that in MX30/2 and MX45/3 systems, each unit has its own on/off circuit breaker and set of line input fuses.

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4.1.3 Status Indicator Lights

Five LED status indicators are located to the left of the LCD display. These LED’s correspond to the following conditions:

REMOTE The REMOTE LED indicates that the unit is in remote control

mode. If the IEEE-488 interface is used, this indicator will be lit whenever the REM line (REMOTE ENABLE) line is asserted by the IEEE controller. If the RS232, USB or LAN interface is used, the REMOTE state can be enabled by the controller using the SYST:REM command. Any time the REMOTE LED is lit, the front panel of the MX Series unit is disabled. The BACK key doubles as a LOCAL button that allows the user to regain control of the front panel.

OVERLOAD The OVERLOAD LED indicates an output overload condition.

This condition can be controlled by setting the current limit value in the PROGRAM menu. Removing the load using the OUTPUT ON/OFF button will recover from an overload condition.

OVER TEMPERATURE The OVER TEMPERATURE LED indicates an overheating

problem inside the unit. This is an abnormal condition, which will cause the unit to shut off. Check the air openings to make sure they are not blocked.

HI RANGE The HI RANGE LED is on when the high voltage output range

has been selected.

OUTPUT The OUTPUT LED is on when the output relay is closed.

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4.1.4 The Shuttle Knob

Figure 4-1: Shuttle Knob

The shuttle knob is located to the right of the keypad and is used to change setup parameters. Note that it cannot be used to move the cursor position between menu fields. Use the UP and DOWN arrow keys in the FUNCTION keypad for this.

The shuttle knob can operate in one of two distinct modes of operation:

MODE DESCRIPTION

IMMEDIATE mode Any time the ENTER key is pressed, the MX Series returns to its

normal mode of operation. In this mode, changes made with the shuttle knob or the data entry keypad will take immediate effect. The IMMEDIATE mode is useful for slewing output values such as voltage and frequency and observing the effect on the load.

SET mode When the SET key located in the FUNCTION keypad is

pressed, changes made with the shuttle to any output parameter will not take effect until the ENTER key is pressed. In this mode, any changes made to a setup menu will be blinking to indicate the pending change condition. This mode allows changes to be made to all output parameters and executing them all at once by pressing the ENTER key.

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4.1.5 FUNCTION Keypad

The function keypad provides access to all menus and measurement screens. The following keys are located in the FUNCTION keypad:

Figure 4-2: FUNCTION Keypad

KEY DESCRIPTION ON/OFF The ON/OFF key may be used to control the state of the output

relay. The active state is indicated by the Output LED. If the output relays are open (LED is off), the output is floating.

PHASE The PHASE key has no function and is a don’t care. SET The SET key selects the PROGRAM setting screen. While this

screen is displayed, the rotary knob can be used to change either voltage or frequency. Additional output settings such as current limit can be reached by using the down  cursor key. If the PROGRAM screen is already displayed, the SET key puts the unit in SET mode. For test options such as –704 or –160, the SET key can be used to skip to the next test in a test sequence during test execution.

MEAS The MEAS key selects the measurement screen. There are no

user changeable fields in the measurement screen. The rotary knob is active while the measurement screen is displayed. Additional measurement data can be displayed by using the up  and down  cursor keys.

MENU The top-level menu is accessed by pressing the MENU key.

Refer to section 4.2 for details on available menus. If a menu screen is already displayed, the MENU key will advance to the next menu.

BACK The BACK key may be used to back up to the previous menu

level or previously selected screen. It can also be used as a backspace key to delete the last digit entered.

For tests options such as the –160 and –704 options, the BACK

key can be used to abort a test in progress.

If the unit is in remote mode, (Remote LED is lit), the front panel

of the power source is disabled. The BACK button doubles as a GOTO LOCAL button (LOCAL) while the unit is in remote state. This allows the user to regain control of the front panel. This LOCAL button can be disabled by sending a Local Lockout bus command. This prevents unauthorized changes of settings in ATE applications.

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4.1.6 Cursor and Enter Keys

The cursor keys are located on the right hand side of the numeric keypad and can be used to scroll through a list of menu entries:

CURSOR UP () The UP key moves the cursor position upwards one position to

the previous available cursor position.

CURSOR DOWN () The DOWN key moves the cursor position downwards one

position to the next available cursor position.

ENTER The blue Enter key is used to confirm selections made in

menus or to active settings made in SET mode.

4.1.7 LCD Display

The LCD display of the power source provides information on instrument settings and also guides the user through the various menus. A sample of the measurement display screen is shown in Figure 4-3.

Menus are accessed by scrolling through two or more entries. Alternatively, the Menu key may be pressed repeatedly to access additional available menu entries.

The active cursor position is indicated by a LEFT POINTING ARROW () and can be moved by using the UP ()and DOWN () keys located on the right hand side of the numeric keypad.

Figure 4-3: Measurement Screen

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4.2 Menu Structure

The next few pages show a map of the available menus in the MX15 Series. All menus can be reached by repeatedly pressing the MENU key. Frequently used menus have a short cut key that provides direct access. Examples of such menus are Program and Measurements. In any case, there are never more than two levels of menus although some menus may be spread across more than one screen.

4.2.1 Power on screens

At initial power up, the MX15 Series power supply will display important configuration information in a series of power on screens. These displays are only visible for a short period of time and will not re-appear until the next time the unit is turned on.

There are four screens that will appear in the same order:

1. LANetwork detection... At power up, the unit will try to detect a LAN interface. If not found, a “LAN not available” message will appear. The LAN will not be detected if:

1. No –LAN option is installed.

2. The USB port is connected to a computer.

3. The RS232 port jumper is installed. This process may take several seconds.

2. Initialization in progress. This means the firmware has started to load.

3. Company and firmware information. Displays the manufacturer - Cal Inst., which is short for California Instruments - and the firmware part number and revision. The firmware part number starts with CIC followed by a three-digit code and dash number. The firmware revision has a major revision before the decimal point and a minor revision after the decimal point.

4. Model and Serial number information. The model will be a function of the configuration and will include the series designation (MX). The serial number is a 5-digit number. This number should match the model type sticker located on the back of the unit.

5. Memory test result. If all memory tests pass at power on, the message "Self test passed" will appear. If not, an error message will be displayed instead. This information may be useful when calling in for service support.

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ENTRY

DESCRIPTION

PROGRAM

The PROGRAM menu allows primary output parameters such as voltage, frequency, current limit, waveform shape and voltage range to be changed.

CONTROL

The CONTROL menu allows secondary setting parameters such as sense mode, phase mode and ALC mode to be changed.

MEASUREMENTS

The MEASUREMENT screen is not a menu in that no user entries are required. It displays read-back data.

TRANSIENTS

The TRANSIENTS menu allows output transients to be programmed.

REGISTERS

The SETUP REGISTERS menu allows complete instrument settings and transient list programs to be saved to nonvolatile memory.

CONFIGURATION

The CONFIGURATION menu allows changes to be made to configuration settings such as the IEEE-488 address, RS232C internal baud rate, and power on state.

OUTPUT CAL

The OUTPUT CAL menu provides access to the LCD viewing angle and Calibration password entry. If the correct calibration password is entered, additional calibration screens can be accessed.

MEAS CAL

The MEAS CAL menu allows for calibration of the AC source measurement system.

APPLICATIONS

The APPLICATIONS menu provides access to the optional firmware application programs that may be installed in the power source controller.

OPTIONS

The OPTIONS menu provides access to optional functions that may be present on the power source.

Once the power on sequence is completed, the power source will always revert to the PROGRAM screen shown here. The power source is now ready to be used.

4.2.2 Top Level Menus

The following top-level menu choices can be accessed using the Menu key:

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ETIME/TEMP

The ETIME/TEMP screen displays the Elapsed time (Time the unit has been in operation) in hours, minutes and seconds. It also displays the internal temperature of the unit in degrees Celsius.

LIMITS

The LIMITS screen displays the hardware configuration limits of the AC power source. It is for display purposes only and the user can change none of these fields.

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MX15 Series

Menu Structure

LEVEL 1

LEVEL 2

LEVEL 1

LEVEL 2

PROGRAM

VOLT 120.0V

REGISTERS

SAVE REG #

CONTROL

FREQ 400.0HZ

CONFIGURATION

RECALL REG #

VRANGE 150.0V

ADDRESS 1

PHASE 0.0°

BAUD RATE 38400

FUNC >SINUSOID

PON STATE RST

CLIP THD 10.0

LANetwork <

VOLT MODE AC

OUTP CAL

VIEW ANGLE 0

DC OFFSET N/A

MEAS CAL

CAL PWORD 0

CURR 125.00A

VOLT FS 17251

OL MODE CV

VOLT ZERO -91

SENSE INT

IMP REAL FS 0

SYNC INT

IMP REAC FS 0

CLOCK INT

IMP REAL0in

MODE STAN

IMP REAC0in

ALC STATE ON

PHASE OFST 0.0

IMP STATE OFF

IMP RES 0mΩ

VIEW ANGLE 0

IND 0mH

CAL PWORD 0

# OUTPUTS N/A

MVOLT FS -1000

ST PHASE RAND

MCURR FS -3000

MEASUREMENT

100.00V 49.04A

APPLICATIONS

MIL704

TRANSIENT

400.0HZ 4.9KW

OPTIONS

DO160

4.9KVA 1.00pF

MS704

49.04A 0.98cF

WHM

0.18%A 0.05A

REGEN

0.19%V 0.0°

INTER HARMONICS

TRAN ST IDLE

SYSTEM MX15-1Pi

COUNT 10

ADVANCE ON

TRIG SOUR IMM

MODE N/A

TRAN STEP AUTO

CLOCK/LOC N/A

VOLT #12 120.0

MIL704 N/A

VSLEW #12 MAX

DO160 N/A

FREQ #12 400.0

MS704 N/A

FSLEW #12 10.00

ABD N/A

4.2.3 Menu Tree

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DWELL #12 10.00

LF N/A

TTLT #12 ON

MB N/A

FUNC #12 SINUSO

WHM N/A

PHASE#12 0.0

LAN N/A

CURR #12 125.0

OPT(0) N/A

SNK N/A

IEC413 N/A

Power On

IEC411 N/A

Screens

Initialization

ETIME/TEMP

ETIME 21:20:03

in progress

LIMITS

TEMP 25:33°C

CAL. INST.

LIM VOLT

CIC920-1,Rev 1.0

LOW 150.0

MODEL MX15-1Pi

LIM VOLT

SERIAL #54321

HIGH 300.0

Memory test

LIM VOLT

passed

Xform 400.0

LIM FREQ

LOW 16

LIM FREQ

HIGH 819

LIM CURR 125.0

PHASE(C) 0.0

Table 4-1: Menu Tree

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ENTRY

DESCRIPTION

VOLT

Programs the output voltage in Vrms. The voltage can be changed from 0 to its max range value as determined by the configuration settings and the selected voltage range by using the keypad + Enter or the shuttle (if the voltage field is selected).

FREQ

Programs the output frequency. The frequency can be changed from its min to its max value as determined by the configuration settings by using the keypad + Enter or the shuttle (if the frequency field is selected).

VRANGE

Selects 150V, 300V, or 400V voltage range (if available). The value of this field can be changed with the shuttle as long as the active pointer () points to the VRANGE entry.

PHASE

Selects the phase angle between the external clock and the output of the AC source. If the clock source is internal, this parameter has no effect.

FUNC

Selects the waveform for the selected phase. On MX15-1Pi models, available choices are SINUSOID, SQUARE and CLIPPED or any user defined waveform that was downloaded to the AC source waveform memory using the RS232 or IEEE-488 interface. This field is fixed to SINUSOID on MX15-1 models.

CLIP LEVEL

Sets the clip level for the CLIPPED sine wave in percent VTHD.

4.2.4 PROGRAM Menus

Figure 4-4: PROGRAM Menus

The PROGRAM menu is shown in Figure 4-4. It can be reached in one of two ways:

1. By selecting the MENU key, selecting the PROGRAM entry and pressing the Enter key.

2. By pressing the SET key. The PROGRAM menu is used to change primary output parameters. Less frequently used

parameters are located in the CONTROL menu. The following choices are available in the PROGRAM menus:

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ENTRY

DESCRIPTION

The range is 0 to 20 %. (MX15-1Pi models only).

Note: Changing the clip level setting will result in temporary loss of the output voltage as the new clipped waveform is loaded. This may cause the EUT to reset or turn off. To avoid this, set the desired clip level before programming the AC voltage and turning on the output to the EUT or use the transient list system to switch between waveforms.

VOLT MODE

Selects the available output modes of operation. Available modes are AC, DC (all models) and ACDC (Pi models only). The shuttle can be used to select the desired output mode.

DC OFFSET

This parameter applies only when the power source is in ACDC mode. The DC offset can only be set to a max value of 220VDC. The rms level of the AC+DC waveform may not exceed the limit of the voltage range (150V or 300V).

Note: Changing the offset percentage setting will result in temporary loss of the output voltage as the new offset is loaded. This may cause the EUT to reset or turn off. To avoid this, set the desired offset percentage before programming the AC voltage and turning on the output to the EUT.

CURR

Sets the current limit value for the current detection system. When the load current value exceeds the set current limit, a fault condition is generated. The actual response of the AC Source to a current limit fault is determined by the protection mode selected in the OL MODE field. (CC = Constant Current, CV = Constant Voltage).

OL MODE

Sets the current limit overload mode. The actual response of the AC Source to a current limit fault is determined by this setting. Available settings are CC for Constant Current mode or CV for Constant Voltage mode. In CV mode, the AC source output will trip off and stay off until re-engaged. In CC mode, the voltage will be reduced until the current limit is no longer exceeded.

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ENTRY

DESCRIPTION

SENSE

Selects internal or external (remote) voltage sense mode. If INT is selected, the voltage is sensed at the output terminal block. If EXT is selected, the voltage is sensed at the external sense connector. If external sense is selected, care must be taken to connect the external sense lines at the load. For sense leads longer than 1 meter, twisted pairs should be used.

SYNC

Selects the external sync mode if available. Default is internal sync, which means a free running time base. The time base can be synchronized to an external sync signal by selecting external sync mode.

CLOCK

Selects internal or external clock source. The MX Series controller uses an open-air crystal time base with an accuracy of 100 ppm. The external clock mode is used to support the –LKS option. For use as an auxiliary unit in a clock and lock system, this field must be set to EXT. A unit with –LKS option can be used stand-alone if needed by setting the INT clock mode.

INT

Default, internal clock.

EXT

Auxiliary unit (-LKS) driven by master (-LKM) clock input. Note: When selecting EXT mode, make sure the Clock and Lock BNC cables are connected to the Master (-LKM) unit. If not, there will be no output on the –LKS unit. See section 3.10 for connection information.

4.2.5 CONTROL Menus

Figure 4-5: CONTROL Menus

The CONTROL menu is shown in Figure 4-5 and can be reached by selecting the Menu key, selecting the CONTROL entry using the DOWN cursor key and then pressing the Enter key.

The CONTROL menu is used to change secondary output parameters. The following choices are available in the CONTROL menus:

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ENTRY

DESCRIPTION

MODE

Power on clock mode. The following two modes can be selected.

STAN

Power up in INT (internal) clock mode for standalone operation. This is the only mode for models without the –LKS option. For units with the –LKM option installed, this field is fixed to CLK/LOCK. For units with the –LKS option installed, this field can be changed to CLK/LOCK for use as an auxiliary unit in a clock and lock system or to STAND for use as a stand alone unit.

CLK/LOCK

Fixed on master (-LKM) unit configuration in a clock and lock system. Power up with EXT (external) clock mode on unit with –LKS option. (See OPTION menu section.). Note that this field cannot be changed if the –LKM option is installed. The frequency resolution below 81.9 Hz in MAST clock and lock mode is reduced to 0.1 Hz from the normal 0.01 Hz.

ALC STATE

Sets the Auto Level Control (ALC) mode. This mode uses the internal measurement system to zero regulate the output. There are three modes of operation:

OFF No measurement based output regulation. REG Output regulation is enabled. AC source will continuously

regulate output but will not trip off output.

ON Output regulation is enabled and output will fault (trip off)

with Error 801 “Output Voltage fault” if regulation cannot be

maintained and the programmed output voltage is 10Vrms or higher. No error is generated for settings below 10 volt.

In most situations, the ALC mode should be set to REG or ON for optimal performance.

Note: The ALC mode only functions for programmed output voltages above 10 Vrms.

IMP STATE

Selects programmable output impedance. The ALC mode must be turned off for the programmable impedance to be turned on. This function allows you to change the output impedance (R and/or L) of the power source.

# OUTPUTS

Selects SINGLE or THREE phase mode of operation. The MX15 models operate only in single-phase mode so this field will always show N/A (not applicable).

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ENTRY

DESCRIPTION

ST PHASE

Selects the start phase angle for output changes made to either voltage or frequency. This allows changing the output at a specific phase angle. The ON/OFF key also uses this phase angle setting to program the output voltage up to the set level after the output relay is closed. The default value for this field is RAND. To set the start phase angle, set the cursor to the ST PHASE field and use either shuttle knob or the keypad to adjust between ± 360°. To set to RAND, use the BACK key.

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ENTRY

DESCRIPTION

MEASUREMENTS 1

VOLTAGE

This value is the true rms output voltage measured at the voltage sense lines.

CURRENT

This value is the true rms output current drawn by the load.

FREQ

The output frequency is measured at the sense lines.

TRUE POWER

This value is the real power.

MEASUREMENTS 2

VA POWER

This value is the apparent power.

POWER FACTOR

This readout shows the power factor of the load.

PEAK CURRENT

This value is the instantaneous peak current. See also PEAK CURR in MEASUREMENTS 3 screen.

CREST FACTOR

This readout displays the ratio between peak current and rms current.

MEASUREMENTS 3 (iX Models only)

CURR THD

This readout displays the total current distortion for the selected

4.2.6 MEASUREMENTS Screens

The MX Series uses a DSP based data acquisition system to provide extensive information regarding the output of the source. This data acquisition system digitizes the voltage and current waveforms and calculates several parameters from this digitized data. The results of these calculations are displayed in a series of measurement data screens. A total of three measurement screens are used to display all this information.

Figure 4-6: MEASUREMENT Screen

The Measurement screens available on the MX15 Series are not menus in that no changes can be made anywhere. Instead, these screens provide load parameter readouts. The measurement screens can be reached by successively pressing the Meas key, which will toggle to all available screens. Note that for -1 Series models, only the first two screens are available. For the –1Pi series, all three measurement screens are available.

The following parameters are available in the measurement screens:

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ENTRY

DESCRIPTION

phase. The distortion calculation is based on the H2 through H50 with the RMS current in the denominator. Note that some definitions of THD use the fundamental component (H1) of the current as the denominator. If desired, the user can program the power source controller to use the fundamental component as the denominator. This mode can only

be programmed over the bus by sending the “MEAS:THD:MODE

FUND” command. At power up or after a reset command, the mode

will revert back to RMS.

PEAK CURR

This readout reflects the highest peak current value detected at the output. This is a track and hold peak current measurement. To measure inrush current for a unit under test, open the output relay and reset the peak current value using the BACK key. Then program the output voltage and frequency and turn on the output relay. The peak current measurement will continuously track the maximum current value detected until reset. See also PEAK CURRENT in MEASUREMENTS 2 screen.

VOLT THD

This readout displays the total voltage distortion for the selected phase. The distortion calculation is based on the H2 through H50 with the RMS voltage in the denominator. Note that some definitions of THD use the fundamental component (H1) of the voltage as the denominator. If desired, the user can program the power source controller to use the fundamental component as the denominator. This mode can only

be programmed over the bus by sending the “MEAS:THD:MODE

FUND” command. At power up or after a reset command, the mode

will revert back to RMS.

PHASE

Relative voltage phase angle measurement with respect to phase A. This readout is only relevant if an external clock source is used.

Update Program Functions from Measurement Screen

The Shuttle knob can be used to update voltage and/or frequency settings while the measurement readout screen is displayed. To do so, select the desired parameter to be changed while in the SET screen using the left arrow cursor. Then, select the measurement screen by pressing the MEAS button. While the measurement screen is visible, the shuttle continues to operate.

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ENTRY

DESCRIPTION

TRAN ST

Indicates the status of the transient system. Available modes of operation are:

IDLE

Transient system is in IDLE or inactive state. To start a transient list, press the ENTER key while on the TRAN STATE field. Note that the output must be ON to run a transient program or an error message will be displayed.

WTRIG

Transient system is armed and waiting for a trigger event.

BUSY

Transient system is active. A transient list execution is in progress.

COUNT

Sets the execution count for the transient system. A count of 1 indicates the transient will run 1 time. The count value can be set with the shuttle or the keypad. The count range is from 1 through 2E+08. Values below 200,000 are displayed in fixed point notation. Value higher than 200,000 are displayed as a floating point number (2E+05). The display has insufficient

4.2.7 TRANSIENT Menu

The transient menu is used to program and execute user-defined output sequences. These output sequences are defined as a sequential list of voltage and/or current settings that can be executed in a time controlled manner.

Each step in these lists is assigned a sequence number ranging from #0 through #99. The numbering determines the order in which each step is executed.

Each step can control the voltage setting, voltage slew rate, frequency setting, frequency slew rate and dwell time. The dwell time determines how long the output dwells at the current step before progressing to the next step. Dwell times can range from 1 ms up to 900000 seconds.

Transient lists can be set up from the front panel or over the bus. The transient list can be saved with the rest of the front panel settings in one of the setup registers. (See Register Menu).

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ENTRY

DESCRIPTION

characters to display the entire mantissa so entering values above 2E+05 from the keyboard is not recommended.

TRIG SOURCE

Indicates the trigger source for transient system. Available trigger sources are:

IMM

Immediate mode. The transient is started from the front panel using the ENTER key.

BUS

Bus mode. The transient system is started by a bus command or a group execute trigger (GET).

EXT

External mode. The transient system is started by a user-provided external TTL trigger signal on TRIGGER IN.

TRAN STEP

Indicates the transient system execution mode. Available modes are:

AUTO

When triggered, the transient system will automatically execute each list point sequentially without waiting for a trigger between list points. This execution is paced by the dwell time set for each data point.

ONCE

When triggered, the transient system will execute the first list point and wait for a new trigger once the dwell time expires. This allows triggered execution of each step in the transient list.

List parameters:

VOLT

Step #

Voltage set point

VSLEW

Step #

Voltage slew rate in V/s

FREQ

Step #

Frequency set point

FSLEW

Step #

Frequency slew rate in Hz/s

DWELL

Step #

Dwell time in seconds. Range is 0.001 to 900000

TTLT

Step #

ON: Generates an output trigger pulse at this list step. OFF: No output trigger. The output trigger is available on the TRIG OUT on the rear panel.

FUNC

Step #

Waveform selection. Available choices are Sinusoid, Square, Clipped or any of the user

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ENTRY

DESCRIPTION

provided waveforms in waveform memory (-1Pi models only).

PHASE

Step #

Phase angle set point. (Not relevant for phase A if clock mode is internal.)

CURR

Step #

Current set point

Transient List point data entry method.

Transient list points are numbered sequentially from 0 through 99 and executed in this order. Each list point or list entry has 9 parameters as shown in the table above. To enter list point data, the keypad must be used. The shuttle knob is used to increment or decrement the list point sequence number (#). The sequence number can only be increased to the next available empty (new) list point.

To move to the next or previous parameter, use the UP () or DOWN () cursor keys It is not necessary to use all list points, only as many needed to accomplish the desired output

sequence.

Setting Data Values

Data values can be set for each point in a list. If all data values in a specific list are going to be the same value (e.g. the current limit parameter is set to the same value for the entire transient program), only the first data value for that parameter has to be set. Setting only the first data point will automatically repeat that value for all subsequent points in the transient list.

Setting Slew Rates

Very often, output changes must be done as fast as the power source can make them. This means the transient list slew rate is set to its maximum value. If this is the case for all the data points in the list, it is sufficient to set just the first data point's slew rate for either voltage and/or current. Setting only the first point of any parameter in the list will automatically cause all points for that parameter to be set to the same value. This saves a lot of data entry time. The max slew rate can be set by entering a value of 0. When the enter key is pressed, the value will change to “MAX”.

If however, one or more data points require a specific slew rate such as needed to do a ramp, all other points have to be specifically set to their required slew rates, including the maximum slew rate.

Saving Transient Lists

Once completed, a transient sequence can be saved along with the steady state setup of the instrument by using the REGISTER, SAVE menu. Registers that may be used for this purpose are 1 through 15. It is advisable to do so, especially for longer transient lists.

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ENTRY

DESCRIPTION

SAVE

REG 0 – 15

Saves the selected setup and transient list from memory. (Setup only for Reg 0) The shuttle knob may be used to scroll through the available list of setup register numbers. Use the ENTER key to perform the save operation. Register 0 can be assigned as the power-on state setup from the CONFIGURATION menu. A valid setup must be saved in REG0 to do so.

Note that REG0 only saves the setup, not the transient list. All other registers also save the transient list.

RECALL

REG 0 – 15

Recalls the selected setup and transient list to memory. (Setup only for Reg 0) The shuttle knob may be used to scroll through the available list of setup register numbers. Use the ENTER key to perform the recall operation. Register 0 can be assigned as the power-on state setup from the CONFIGURATION menu. A valid setup must be saved in REG0 to do so.

Note that REG0 only saves the setup, not the transient list. All other registers also save the transient list.

4.2.8 REGISTERS Menu

The registers menu provides access to the non-voltage setup storage of the power source. A total of 16 front panel setups can be stored in registers numbered from 0 through 15. Each register except register 0 can hold the complete front panel setup, including the programmed transient list. This allows for quick recall of different setups and transient programs.

Register 0 is reserved to be used as the power-on setting as assigned by the user. To have the power source start in a specific setting, save the desired setting to Register 0 and assign register zero as the power-on default in the CONFIGURATION menu. Alternatively, the power source can be set to power up with the RST factory default settings. See section 4.2.9 for factory default settings.

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DESCRIPTION

ADDRESS

0 - 31

Sets the selected IEEE / GPIB bus address for the optional IEEE/GPIB interface. Factory default is address 1. The shuttle knob or the keypad can be used to set a value from 0 through 31. Do not use address 0 as this address is typically reserved for the GPIB controller.

BAUD RATE

9600 19200 38400 57600 115200 230400 460800

Sets the baud rate for the RS232 communications port. Factory default is 38400 baud. Available settings are 9600 through 115200 baud. The same setting is used for USB and LAN modes. For use with either USB or LAN, the baud rate in this screen must be set to

460800. Note: The shuttle knob can be used to scroll

through these selections.

PON STATE

REG0 RST

Determined power on state. This setting selects either non-volatile REG0 to be recalled automatically at power-on or factory default (RST). Factory default is RST, which recalls the factory settings. See below.

Factory default settings are:

Output relay Open Voltage Range Low Mode AC Voltage 0 Vrms Frequency 60 Hz

Note that to use REG0 for power-on default, the contents of the register must be programmed first. See section 4.2.8. If an empty register is selected, the power source will revert back to RST (factory setting).

4.2.9 CONFIGURATION Menu

The configuration menu may be used to configure various aspects of the instrument such as the serial port (including USB and LAN), IEEE-488/GPIB address and the power-on settings of the supply.

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DESCRIPTION

LANetwork

LAN

If the –LAN option is installed; pressing Enter while the cursor is on the LANetwork entry provides access to the LAN interface setting screens listed below.

IP Address

Displays the IP address setting. This value can be changed by pressing the SET key and entering a new value from the keypad. Use the numeric data pad to enter each field. To move between the four fields, use the decimal point key on the keypad. To set a fixed IP address, press SET and enter the desired IP address. To set the unit to DHCP mode, press SET and enter all zeros (0.0.0.0) as the IP address and cycle power two times. The obtained IP address will be displayed after the second power on. Any change to this value will NOT take effect until after power on the unit has been cycled. When changing mode from static IP to DHCP, it is necessary to cycle power on the unit twice, once to change mode and again to obtain and display a new IP address from the network.

MAC Address

Displays the network Media Acces Control address. This value is fixed and cannot be changed. The same MAC is normally printed on the model serial tag. The MAC address is shown as six hexadecimal numbers separated by a colon, e.g. 02:20:4A:9A:02:FD. Note that the leading ‘0’ is never visible due to the maximum number of LCD characters per line.

GWAddress

Gateway address setting. A default gateway is a node (a router) on a computer network that serves as an access point to another network. This value can be changed by pressing the SET key and entering a new value from the keypad. Use the numeric data pad to enter each field. To move between the four fields, use the decimal point key on the keypad. Any change to this value will NOT take effect until after power on the unit has been cycled.

HostBits

Number of host bits as opposed to network bits in network mask. A CIDR class C network uses 24 network bits and 8 host bits. (Class A = 24, Class B = 16). This value can be changed by pressing the SET key and entering a new value from the keypad. Any change to this value will NOT take effect until after power on the unit has

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ENTRY

DESCRIPTION

been cycled.

Port No

TCP remote port number. This value must be set to 5025 (SCPI) to support the built in web page. This value can be changed by pressing the SET key and entering a new value from the keypad. Any change to this value will NOT take effect until after power on the unit has been cycled.

LAN Default

LAN default setting can be achieve by selecting the Mac address screen and press the set key followed by the Enter key. Press the Enter key again to confirm. The IP address is set to DHCP or AUTO IP.

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ENTRY

DESCRIPTION

VIEW ANGLE

-10 to +10

LCD viewing angle adjustment.

CAL PWORD

Calibration password required to access all calibration screens. The calibration password is 5000. The password can be entered using the keypad or shuttle followed by the ENTER key.

Measurement Calibration Screens

MVOLT FS

Calibration coefficient for full-scale voltage measurement.

MCURR FS

Calibration coefficient for full-scale current measurement.

4.2.10 CALIBRATION Menus

Measurement Calibration:

Output Calibration:

The measurement calibration menu can be used to perform routine calibration of the internal measurement system. The recommended calibration interval is 12 months. To enter the calibration screens, the calibration password must be entered first.

The output calibration menu can be used to perform routine calibration of the voltage output and programmable impedance. The recommended calibration interval is 12 months. To enter the calibration screens, the calibration password must be entered first.

Note: Refer to chapter 6 for details on routine calibration procedures and equipment requirements. Do not attempt calibration without consulting the user manual.

This menu also contains the LCD viewing angle adjustment.

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ENTRY

DESCRIPTION

Output Calibration Screens

VOLT FS

Calibration coefficient for voltage output.

VOLT ZERO

Zero offset voltage calibration factor.

IMP REAL FS

Full scale resistive output impedance calibration factor.

IMP REAC FS

Full scale inductive output impedance calibration factor.

IMP REAL0in

Minimum resistive AC source output impedance. The source has an output impedance greater than zero. This value determines the minimum resistive component of the AC source output impedance.

IMP REAC0in

Minimum reactive AC source output impedance. The source has an output impedance greater than zero. This value determines the minimum resistive component of the AC source output impedance.

PHASE OFST

0.0 - 360.0

Phase offset calibration factor. Compensates for phase shift caused by AC amplifier.

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ENTRY

DESCRIPTION

SYSTEM

Shows model number.

ADVANCE

Designates the advanced measurement and

4.2.11 APPLICATIONS Menu

Note that some of the application options listed in this section may not be available on all MX15

models and may not be configured. In this case, these fields in these menus will display “N/A”

(not applicable) and no access to these menus will be available.

The Applications menu provides access to application specific firmware functions if available. Note that there may be no applications installed in which case this screen will still be shown but has no function.

Possible applications are DO160 and MIL704. To access either of the application screens, position the cursor on the APPLICATIONS entry and press the ENTER key. Select the desired application and press ENTER.

4.2.12 OPTIONS Menu

The Options menu provides access to available optional features. Note that there may be no options installed in which case this screen will still be shown but has no function. The option settings are protected and cannot be changed by the user. These screens are provided for information purposes only.

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ENTRY

DESCRIPTION

arbitrary waveform capability (-1Pi).

N/A

This feature is not available on –1 models. N/A is shown.

CLOCK/LOC

N/A

Clock and lock is an option. If no –LKM option is installed, this field will show N/A.

MAST

-LKM Option installed. The unit can be used as a Clock and Lock system master or standalone.

AUX

-LKS option installed. The unit can be used as a Clock and Lock system auxiliary or standalone.

MIL704

Avionics test - MIL-STD 704 revs D and E Option (as interpreted by AMETEK at time of release)

DO160

Avionics test – RTCA DO160 Option

MS704

Avionics test - MIL-STD 704 revs A through F Option (according to Appendix A released with rev F)

ABD

Avionics test – Airbus ABD0100.1.8 Option

LF Low Frequency Option – Frequency will be limited to 500Hz

MB Multi-Box Option – Each MX15 in a multibox configuration will have its own controller.

ENTRY

DESCRIPTION

ETIME

01:23:45

The ETIME field displays the total accumulated elapsed time for the instrument since it's initial manufacture. This value cannot

4.2.13 Elapsed Time and Temperature Screen

The Etime/Temp screen displays the elapsed time since the power source has first been turned on. This is an accumulated total time in hours, minutes and seconds.

The same screen also displays the internal temperature of the power supply.

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ENTRY

DESCRIPTION

be changed or reset.

TEMP

37.342°

The TEMP field is not a user selectable parameter but rather a read-out of the internal temperature in degrees Celsius. It is provided for informational purposes only.

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ENTRY

DESCRIPTION

LIM VOLT

LOW

Low Voltage Range

Displays maximum available output voltage in the low voltage range.

LIM VOLT HIGH

High Voltage Range

Displays maximum available output voltage in the high voltage range.

LIM VOLT Xform

Extra Voltage Range

Displays maximum available output voltage in the extra voltage range. (HV or EV option)

LIM FREQ

LOW

Low Frequency Limit

Displays minimum available output frequency.

LIM FREQ HIGH

High Frequency Limit

Displays maximum available output frequency

LIM CURR

C range

Displays maximum available current in low voltage range at full power.

PHASE (C)

Phase Setting

Displays phase angle for phase C. Valid values are 120 for three-phase or mode configuration, 0 for single-phase only configuration. Any other value indicates split (2) phase configuration. The MX15 is single phase only, so this will always show a value of 0.

4.2.14 LIMIT Menu

The Limit menu displays the maximum available value for voltage, frequency and current range of the power supply. This screen is used for information only and contains no user changeable fields. The limit values shown cannot be changed.

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4.3 Output Programming

4.3.1 Set the Output

Output parameters are all set from the PROGRAM screen.

1. Use the MENU key and select the PROGRAM entry.

2. Press the ENTER key to bring up the PROGRAM menu. or

2. Use the SET key to directly bring up the PROGRAM menu. There are two methods for programming output parameters: IMMEDIATE mode SET mode

4.3.2 Slewing Output Values in IMMEDIATE Mode

The default mode of operation is an immediate mode in which changes to output parameters made with the knob or the entry keypad are immediately reflected at the output.

To change the output voltage:

1. Place the cursor on the VOLT entry

2. Rotate the shuttle knob clockwise to increase the value, counterclockwise to decrease the value or use the Keypad to enter a value and press the Enter key.

These changes take effect immediately. To change the output frequency:

1. Place the cursor on the FREQ entry

2. Rotate the shuttle knob clockwise to increase the value, counterclockwise to decrease the value or use the keypad to enter a value and press the Enter key.

These changes take effect immediately.

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4.3.3 Change Output Values in SET Mode

The SET mode of operation is a mode in which changes to output parameters made with the knob or the entry keypad do not affect the output until the Enter key is pressed. The AC source is put in this SET mode by pressing the Set key twice. A blinking cursor indicates SET mode is active.

To change the output voltage:

1. Press the Set key twice

2. Place the cursor on the VOLT entry

3. Rotate the shuttle knob clockwise to increase the value, counterclockwise to decrease the value or enter a new value using the keypad but do not press the Enter key yet.

4. A blinking underline cursor will appear in the data for the VOLT field to indicate a change in settings but the output remains unchanged.

5. Place the cursor on the FREQ entry using the down arrow key.

6. Rotate the shuttle knob clockwise to increase the value, counterclockwise to decrease the value or enter a new value using the keypad but do not press the Enter key yet.

7. A blinking underline cursor will appear in the data for the FREQ field to indicate a change in settings but the output remains unchanged.

8. Press the Enter key.

Both new voltage and frequency output values are now present at the output. The unit has returned to immediate mode of operation until the SET key is pressed again.

Note that output settings such as voltage and frequency can be changed from the measurement screen as well. If all three phases are selected on three phase models, slewing the shuttle knob will change the output voltage on all three phases. If only one phase is selected, only the output of the selected phase will be affected.

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4.4 Waveform Management [1Pi Controller only]

The MX Series with 1Pi controller employs independent arbitrary waveform generators for each phase. This allows the user to create custom waveforms. In addition, three standard waveforms are always available. This chapter covers issues that relate to defining, downloading and managing custom waveforms.

4.4.1 Standard Waveforms

For most AC applications, a sine wave shape is used. The sine wave is one of the standard waveforms provided on all MX Series models. This standard sine wave is always available and is the default waveform at power-on. On MX models with the 1Pi controller, two more standard waveforms are available, square and clipped.

Figure 4-7: Selecting a Waveform

The square wave provides a high frequency content waveform with relative fast rise and fall times. Due to AC amplifier bandwidth limitations, the frequency content of the standard square

wave has been kept within the amplifier’s capabilities. As the fundamental frequency is

increased, the relative contribution of higher harmonics is reduced. The clipped sine wave may be used to simulate voltage distortion levels to the unit under test.

The total harmonic distortion level may be programmed in percent using the CLIP THD field of the PROGRAM menu. Changing the distortion level of the CLIP waveform forces the AC source to regenerate the CLIPPED sine wave’s data points and reload the waveform register with the newly requested data. This process requires the output to be dropped. To avoid interrupting the voltage output to the unit under test, select a different waveform such as the standard sine wave first, change the clip level and change the waveform back to the CLIPPED sine wave. This will avoid any output interruption.

4.4.2 Creating Custom Waveforms

The 1Pi controller provides four groups of 50 custom defined waveforms each for a total of 200 waveforms in addition to the 3 standard waveforms. Of these four groups, one may be active at a time.

Custom waveforms cannot be created from the front panel of the MX Series. Rather, they have to be downloaded through the IEEE-488 or RS232C interface. A Windows based program is included with the MX Series that allows waveforms to be created and downloaded easily. This Graphical User Interface program allows waveforms to be created by specifying harmonic amplitudes and phase angles with respect to the fundamental. It also offers an arbitrary waveform data entry mode that allows individual data points to be specified.

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Figure 4-8: Custom Waveform Creation with GUI Program

Once downloaded, waveforms remain in non-volatile memory and will be visible in the PROGRAM menu for selection. The user can assign a 12-character name to each custom waveform. Avoid using any of the standard waveform names (SINE, SQUARE or CLIPPED) as these names will not be accepted.

Waveforms may be deleted using the IEEE-488 or RS232C interface as well. Custom waveforms cannot be deleted from the front panel however to avoid accidental erasure.

4.4.3 Waveform Groups

Waveform groups extend the number of available custom waveform to 200. Each group can contain up to 50 user-defined waveforms. Groups are numbered 0 through 3 and may be selected only by using the included Gui. To switch waveform groups, proceed as follows:

1. Establish a connection to the unit using RS232 or GPIB interface with the provided Gui. Send the command: PONS:WGR x, where x is 0-3 depending on which group is to be selected.

2. To activate your new selection, YOU MUST CYCLE THE POWER so the AC source reinitializes. If the source is operated over the bus, a IEEE-488 Device Clear or reset command (*RST) command will have the same effect.

The new wave group will be active after you turn the power to the unit back on.

4.4.4 RMS Amplitude Restrictions

The output of a sine wave may be programmed to the full rms value of the voltage range selected. If the AC source is in the 300 V range, the maximum programmable rms voltage is 300 Volt. If a custom waveform is used however, the maximum programmable rms voltage may be less than the maximum range value. The voltage range limit is based on the use of a sine wave with a 1.414 crest factor. A 300 V rms sine wave has a 424 Volt peak voltage. The AC source has a maximum peak voltage capability that is determined by the selected voltage range. If the user selects a custom waveform with a crest factor that is higher than 1.414, the peak voltage would exceed this maximum if the rms voltage were to be programmed at 300 V rms.

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The MX Series power source automatically limits the maximum allowable programmed rms voltage of any custom waveform by calculating the crest factor of the selected waveform and controlling the rms limit accordingly. Thus, each custom waveform may have a different maximum rms value. The 1Pi controller will prevent the user from programming the rms voltage

above this limit. If a value is entered in the PROGRAM menu above this value, a “Voltage peak

error” message is generated.

Figure 4-9: Waveform Crest Factor Affects Max. rms Voltage

The figure shown here illustrates the relationship between the crest factor of the wave shape (or

its “peakiness”) and the maximum peak voltage allowed for a given voltage range. Since the

peak voltage cannot exceed the AC source’s capabilities, the programmable rms voltage has to be restricted, in this case to only 167.8785 volt for the waveform on the left. The sine wave on the right can be programmed to the full 300 V rms as this still falls within the same peak voltage limitation of the AC source.

If the MX Series is used over the bus, the “:VOLT? MAX” query command can be used to

determine the maximum allowable RMS voltage for the selected waveform. Using the returned value as part of a program will prevent range errors.

4.4.5 Frequency Response Restrictions

The user may create a waveform that contains any number of harmonic frequencies of the fundamental. The AC Source itself however has a finite signal bandwidth and will attenuate higher frequency components of the signal. To limit the maximum frequency component of the output signal, the 1Pi controller automatically applies a band-pass filter to all custom waveforms as they are downloaded. The controller implements the following process for user defined waveforms:

Each down loaded waveform will have a computed frequency limit that is less than or equal the maximum frequency limit of the AC source. The frequency limit is a function of the harmonics content of the waveform and will follow the equation below.

Fmaxh = Fmax/(level * hn)

If Fmaxh is below the minimum frequency limit, the waveform will be rejected at down load time and the label will be deleted from the waveform catalogue.

If the MX Series is used over the bus, the “:FREQ? MAX” query command can be used to determine the maximum allowable fundamental frequency for the selected waveform. Using the returned value as part of a program will prevent range errors.

Limits assume a program of full-scale voltage. No adjustments for voltage setting are made below the full-scale value.

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Specifications and Main Features

Frequently Asked Questions

User Manual