Aetechron 7224 Manual de usuario

7224

Operator’s Manual

Single-Channel Industrial Amplier for Demanding, High-Power Systems

574.295.9495 | www.AETechron.com

2507 Warren Street, Elkhart, IN 46516

Limited One-Year Warranty

HOW TO OBTAIN WARRANTY SERVICE

When you notify us of your need for warranty service,

we will give you an authorization to return the product

for service. All components must be shipped in a factory

pack or equivalent which, if needed, may be obtained

from us for a nominal charge. We will take corrective ac-

tions within a reasonable time of the date of receipt of

the defective product. If the repairs made by us are not

satisfactory, notify us immediately.

DISCLAIMER OF CONSEQUENTIAL AND

INCIDENTAL DAMAGES

You are not entitled to recover from us any consequen-

tial or incidental damages resulting from any defect in

our product. This includes any damage to another prod-

uct or products resulting from such a defect.

WARRANTY ALTERATIONS

No person has the authority to enlarge, amend, or

modify this warranty. The warranty is not extended by

the length of time for which you are deprived of the use

of this product. Repairs and replacement parts provided

under the terms of this warranty shall carry only the

unexpired portion of this warranty.

DESIGN CHANGES

We reserve the right to change the design of any

product from time to time without notice and with no

obligation to make corresponding changes in products

previously manufactured.

LEGAL REMEDIES OF PURCHASER

There is no warranty that extends beyond the terms

hereof. This written warranty is given in lieu of any oral

or implied warranties not contained herein. We disclaim

all implied warranties, including, without limitation, any

warranties of merchantability or tness for a particular

purpose. No action to enforce this Warranty shall be

commenced later than ninety (90) days after expiration

of the warranty period.

AE Techron, Inc.

Customer Service Department

2507 Warren Street

Elkhart, IN 46516

U.S.A.

574.295.9495

www.aetechron.com

SUMMARY OF WARRANTY

AE TECHRON INC. of Elkhart, Indiana (Warrantor) war-

rants to you, the ORIGINAL COMMERCIAL PURCHASER

ONLY of each NEW AE TECHRON INC. product, for a

period of one (1) year from the date of purchase, by the

original purchaser (warranty period) that the product

is free of defects in materials or workmanship and will

meet or exceed all advertised specications for such a

product. This warranty does not extend to any subse-

quent purchaser or user, and automatically terminates

upon your sale or other disposition of our product.

ITEMS EXCLUDED FROM WARRANTY

We are not responsible for product failure caused by

misuse, accident or neglect. This warranty does not

extend to any product on which the serial number has

been defaced, altered, or removed. It does not cover

damage to loads or any other products or accessories

resulting from AE TECHRON INC. product failure. It does

not cover defects or damage caused by the use of unau-

thorized modications, accessories, parts, or service.

WHAT WE WILL DO

We will remedy, at our sole discretion, any defect in

materials or workmanship by repair, replacement, or

refund. If a refund is elected, you must make the defec-

tive or malfunctioning component available to us free

and clear of all liens or other encumbrances. The refund

will be equal to the actual purchase price, not includ-

ing interest, insurance, closing costs, and other nance

charges less a reasonable depreciation on the product

from the date of original purchase. Warranty work can

only be performed at our authorized service centers or

at our factory. Expenses in remedying the defect will be

borne by AE TECHRON INC., including one-way surface

freight shipping costs within the United States. (Pur-

chaser must bear the expense of shipping the product

between any foreign country and the port of entry in the

United States and all taxes, duties, and other customs

fees for such foreign shipments.)

DECLARATION OF CONFORMITY

Technical Construction File Route

Issued By: AE Techron, Inc. For Compliance Questions Only: Larry Shank

2507 Warren Street 574-295-9495

Elkhart, IN 46516 lshank@aetechron.com

Equipment Type: Industrial Power Amplifiers

Model Name: 7224

EMC Standards:

EN 61326-1: 2013 –Electrical Equipment for Measurement, Control and Laboratory use

—EMC Requirements

EN 55011: 2009 + A1: 2010 –Industrial, Scientific and Medical (ISM) radio-frequency equipment

—Radio disturbance characteristics

—Limits and methods of measurement

EN 61000-4-2: 2009 –Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques:

Electrostatic discharge immunity test

EN 61000-4-3: 2006 + A2: 2010 –Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques:

Radiated radio-frequency electromagnetic field immunity test

EN 61000-4-4: 2004 + A1: 2010 –Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques:

Electrical fast transient/burst immunity test

EN 61000-4-5: 2006 –Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques:

Surge immunity test

EN 61000-4-6: 2009 –Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques:

Immunity to conducted disturbances induced by radio frequency field

EN 61000-4-8: 2010 –Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques:

Power frequency magnetic field immunity test

Safety Standard:

BSEN61010-1:2010 (inc Corr. May 2011) –Safety requirements for electrical equipment for measurement, control, and laboratory use

I certify that the product identified above conforms to the requirements of the EMC Council Directive 2014/30/EU, and the Low Voltage Directive 2006/95/EC.

Signed:

Larry Shank

President Date of Issue: October 8, 2014

Contents

1 Introduction ....................................................................................................................................6

1.1 Features ................................................................................................................................6

2 Amplier Setup...............................................................................................................................7

2.1 Safety First ............................................................................................................................7

2.2 Unpacking .............................................................................................................................7

2.3 Installation .............................................................................................................................7

2.4 Connecting the Load .............................................................................................................8

2.5 Connecting the Input Signal ..................................................................................................8

2.6 Connecting the AC Supply ....................................................................................................9

2.7 Start-up Procedure..............................................................................................................10

3 Amplier Operation ......................................................................................................................11

3.1 Front-Panel Controls ...........................................................................................................11

3.2 Front-Panel Indicators.........................................................................................................12

3.3 Back-Panel Controls and Connectors .................................................................................15

4 Advanced Conguration...............................................................................................................18

4.1 Conguration Access Panel ................................................................................................18

4.2 Conguration Settings Located on the Main Board.............................................................18

4.3 Conguration Settings Located on the Power Supply Board ..............................................21

5 Applications..................................................................................................................................24

5.1 Remote Status and Control using the SIM Interlock I/O Connector....................................24

5.2 Controlled Current Operation ..............................................................................................28

5.3 Multi-amplier Systems .......................................................................................................32

6 Amplier Signal Flow....................................................................................................................37

6.1 Input Signals........................................................................................................................37

6.2 AC Mains Power..................................................................................................................37

7 Maintenance ................................................................................................................................38

7.1 Clean Amplier Filter and Grills ...........................................................................................38

8 Troubleshooting ...........................................................................................................................39

8.1 Introduction & Precautions ..................................................................................................39

8.2 Visual Inspection .................................................................................................................39

8.3 No Signal.............................................................................................................................40

8.4 No LEDs Illuminated or No Fans.........................................................................................40

8.5 OverVoltage LED Lit............................................................................................................40

8.6 Standby LED Remains Illuminated......................................................................................40

8.7 Amplier Overheats (Over Temp Fault Condition)...............................................................41

8.8 Fault LED is Illuminated ......................................................................................................41

8.9 Factory Service ...................................................................................................................41

9 Specications...............................................................................................................................43

List of Figures

Figure 1.1 – 7224 Front Panel.............................................................................................................6

Figure 2.1 – 7224 Back Panel .............................................................................................................8

Figure 2.2 – Connecting the Load .......................................................................................................8

Figure 2.3 – Closeup of the Output Terminals .....................................................................................8

Figure 2.4 – Closeup of SIM card........................................................................................................9

Figure 2.5 – Wiring for Unbalanced or Balanced Input Connector......................................................9

Figure 2.6 – Closeup of AC Mains Outlet ..........................................................................................10

Figure 2.7 – Sample of Congurations Setting Label........................................................................10

Figure 3.1 – Power Switch.................................................................................................................11

Figure 3.2 – Gain Control ..................................................................................................................11

Figure 3.3 – Push Buttons.................................................................................................................11

Figure 3.4 – Indicators.......................................................................................................................12

Figure 3.5 – Main Status Indicators for Stand-Alone Ampliers ........................................................12

Figure 3.6 – Fault Status Indicators for Stand-Alone Ampliers ........................................................13

Figure 3.7 – Main Status Indicators for Multi-Amplier Systems.......................................................14

Figure 3.8 – Fault Status Indicators for Multi-Amplier Systems.......................................................15

Figure 3.9 – Back Panel Controls and Connectors ...........................................................................17

Figure 4.1 – Access Panel Screw Locations .....................................................................................18

Figure 4.2 – Main Board Location Inside Access Panel ....................................................................19

Figure 4.3 – Master/Slave Setting .....................................................................................................19

Figure 4.4 – Gain Trim Control ..........................................................................................................19

Figure 4.5 – Controlled-Voltage/Controlled-Current Mode Setting ....................................................20

Figure 4.6 – Compensation Setting...................................................................................................20

Figure 4.7 – Run Mode/Stop Mode on Power-Up Setting .................................................................20

Figure 4.8 – Standby Mode on Over Temp Setting ...........................................................................21

Figure 4.9 – Standby Mode on Over Load Setting ............................................................................21

Figure 4.11 – Location of Amplier High-Voltage Transformer Sockets ............................................22

Figure 4.10 – Accessing the Power Supply Board ............................................................................22

Figure 4.12 – J3 and J7 Plug Locations for High-Current Output......................................................22

Figure 4.13 – J4 and J8 Plug Locations for High-Voltage Output .....................................................22

Figure 4.14 – Bi-Level Power Switch Location..................................................................................23

Figure 5.1 – Remote Status and Control Pinouts..............................................................................24

Figure 5.2 – Remote Run/Standby Monitor.......................................................................................24

Figure 5.3 – Remote Status and Reset Schematic ...........................................................................25

Figure 5.4 – Remote Enable/Standby ...............................................................................................26

Figure 5.5 – Remote Voltage Monitoring ...........................................................................................27

Figure 5.6 – Remote Current Monitoring...........................................................................................27

Figure 5.7 – Remote Current Monitoring, Alternate Method..............................................................28

Figure 5.8 – Input to Output Comparison, Controlled-Voltage Operation..........................................28

Figure 5.9 – Input to Output Comparison, Controlled-Current Operation..........................................29

Figure 5.10 – Factory-installed Default RC Network .........................................................................29

Figure 5.11 – Custom Compensation Location .................................................................................31

Figure 5.12 – Compensation Effects on Waveform ...........................................................................31

Figure 5.13 – Square Wave Showing a Decrease in R is Required..................................................32

Figure 5.14 – Square Wave Showing an Increase in R is Required .................................................32

Figure 5.15 – Square Wave Showing an Increase in C is Required .................................................32

Figure 6.1 – Board-Level Functional Block Diagram.........................................................................37

Figure 8.1 – +Vcc and –Vcc Point Locations.....................................................................................39

Figure 8.2 – Fuse F1 Location...........................................................................................................40

Figure 8.3 – Interlock I/O Connector .................................................................................................40

Figure 9.1 – Voltage Potential vs. Frequency....................................................................................45

Figure 9.2 – Frequency Response ....................................................................................................45

Figure 9.3 – Noise vs. Frequency......................................................................................................45

Figure 9.4 – Continuous Power vs. Frequency .................................................................................45

Figure 9.5 – Thermal Performance....................................................................................................45

Figure 9.6 – DO 160 Section 18.2 AC Power Processing .................................................................45

Figure 9.7 – DC Current Over Time at 13.5 VDC ..............................................................................46

Figure 9.8 – DC Current Over Time, 2-ohm Load .............................................................................46

Figure 9.9 – DC Current Over Time, 3-ohm Load .............................................................................46

Figure 9.10 – DC Current Over Time, 4-ohm Load ...........................................................................46

Figure 9.11 – DC Current Over Time, Comparison with 4-ohm Load................................................46

Information subject to change 97-7224006_3-31-15

7224 OPERATOR’S MANUAL – SECTION 1

1 Introduction

Congratulations on your purchase of the 7224 AE

Techron power amplier—one of the most precise

power ampliers ever produced for industrial ap-

plications and testing. The 7224 ampliers are built

and tested to the most stringent quality standards

for long life and outstanding performance. The AE

Techron brand is known throughout the world for

its robust precision ampliers as well as its product

service and support.

1.1 Features

The 7224 is a single-channel linear amplier de-

signed for use in demanding applications requir-

ing low noise, low distortion, and accurate power

amplication from DC to 300 kHz. They feature:

• Frequency bandwidth of DC to 300 kHz at

rated power.

• Continuous output of over 1,100 watts RMS at

4 ohms.

• 40 mSec pulses of up to 52 amperes peak into

a 0.5 ohm load.

• System output of over 4,000 watts or over 200

amperes maximum is possible with multiple,

interconnected amplifiers.

• Efficient design and light weight chassis materi-

als allow amplifier to occupy only 2U height,

and weigh only 41 lbs.

• Robust, linear power supply results in extreme-

ly low noise; bi-level switch design limits heat

dissipation to output devices.

• Protection circuitry protects the AE Techron

7224 from input overloads, improper output

connection (including shorted and improper

loads), over-temperature, over-current, and

supply voltages that are too high or low.

• 7224 with “P” option offers precision control of

output offset, DC drift and gain linearity.

• Shipped ready to operate from 120-volt (±10%)

single-phase AC mains; 220/240-volt model

available on request.

Figure 1.1 – 7224 Front Panel

97-7224006_3-31-15 Information subject to change 7

7224 OPERATOR’S MANUAL – SECTION 2

2 Amplier Setup

The 7224 ampliers are precision instruments that

can be dangerous if not handled properly. Lethal

voltages are present in both the AC input supply

and the output of these ampliers. For this reason,

safety should be your primary concern when you

setup and operate this amplier.

2.1 Safety First

Throughout this manual special emphasis is

placed on good safety practices. The following

graphics are used to highlight certain topics that

require extra precaution.

Along with any additional accessories purchased

by the customer, all 7224 ampliers ship with the

following:

• 7224 Amplifier

• Toolkit (contains one #2 Phillips screwdriver

and four rubber feet)

• Power Cord

• 7224 Operator’s Manual and Quick Start sheet

2.3 Installation

The 7224 ampliers are packaged in a rugged

powder-coated aluminum chassis. This chassis is

2U (rack units) tall, and has rack “ears” on each

side of the front panel for mounting to a standard

EIA (Electronic Industries Association) rack. Use

standard rack mounting hardware to mount the

amplier. Use nylon washers if you wish to protect

the powder-coat nish on the front of the amplier.

Optionally, the amplier can be placed on a

bench top; please keep in mind that the protective

powder-coating can be scratched when placed

on other equipment or on a bench top, especially

when there is dirt present. To protect the nish, a

set of rubber feet is included in the toolkit that can

be installed on the bottom of the amplier.

Allow ample space on the sides and especially

the back of the amplier for heated air to escape.

The amplier should be mounted in a rack that is

adequately ventilated and not sealed. Likewise,

the front of the amplier should be unobstructed to

allow cool air to enter the amplier.

DANGER represents the most severe

hazard alert. Extreme bodily harm or

death will occur if these guidelines are

not followed. Note the explanation of the

hazard and instruction for avoiding it.

DANGER

WARNING alerts you to hazards that

could result in severe injury or death.

Note the explanation of the hazard and

the instructions for avoiding it.

WARNING

CAUTION indicates hazards that could

result in potential injury or equipment

or property damage. Once again, note

the explanation of the hazard and the

instructions for avoiding it.

CAUTION

Do not operate the amplier in a small

sealed chamber of any kind. Improper

operations and overheating will result.

CAUTION

2.2 Unpacking

All ampliers are tested and inspected for dam-

age before leaving the factory. Carefully unpack

and inspect the amplier for damage. Please note

any damage for future reference and notify the

shipping company immediately if damage is

found. Also, please save the shipping carton and

materials as evidence of damage and/or for return-

ing the amplier for repair.

Information subject to change 97-7224006_3-31-15

7224 OPERATOR’S MANUAL – SECTION 2

2.4 Connecting the Load

Before connecting the amplier, make sure the AC

power cord is unplugged.

This section describes output wiring to the load

when using the default amplier conguration:

Single (or Master) amplier operated in Controlled

Voltage mode. The 7224 amplier also can be

eld-adjusted for operation in Controlled Current

mode or for operation as a Slave amplier in a

multi-amplier system. These alternate congu-

rations may require special output wiring and/or

additional components.

If your application requires Controlled Current and/

or Slave operation, change the default settings on

the main board before connecting the amplier.

(See the Advanced Conguration section for

more information.)

Connection to the output of the amplier is to a

3-position terminal strip with #8 screws. Wires

terminated with #8 ring terminals, tinned wires

up to 10GA in size, or bus bars with 0.18 in. (4.6

mm) holes are recommended when connecting to

the output terminals. Connect the load across the

terminals marked “OUTPUT” (positive) and “COM”

(negative/ground). The third terminal, “CHAS-

SIS GROUND” can be connected to an external

ground point such as the rack chassis. See Figure

2.2.

Always use the appropriate wire size and insula-

tion for the maximum current and voltage expected

at the output. Never connect the output of the

amplier to any other model amplier, power sup-

ply, signal source, or other inappropriate load; re

can result.

NOTE: The 7224 amplier comes with a factory-in-

stalled 2.7-ohm, 2W, 5%, metal-oxide resistor con-

necting the terminals marked “COM and “CHAS-

SIS GROUND” (see Figure 2.3). This resistor

should NOT be removed. WARNING: Removing

this resistor can cause dangerous output and/

or damage to the load.

Figure 2.1 – 7224 Back Panel

Figure 2.2 – Connecting the Load

ELECTRIC SHOCK HAZARD.

Output potentials can be lethal. Make

connections only with AC Power OFF

and input signals removed.

WARNING

Figure 2.3 – Closeup of the Output Terminals

97-7224006_3-31-15 Information subject to change 9

7224 OPERATOR’S MANUAL – SECTION 2

2.5 Connecting the Input Signal

The signal is connected to the amplier through

a “SIM (Specialized Input Module) Card” located

on the amplier back panel (see Figure 2.4). The

standard SIM card includes both an Unbalanced

Input BNC jack and a Balanced Input “WECO” ter-

minal block connector, an Input Select switch, and

an Interlock – I/O Connector. See the Applica-

tions section for information on using the Interlock

– I/O Connector.

Position the Input Select switch to the left to

select the Unbalanced Input connector and to the

right to select the Balanced Input connector. Note

that when the Input Select switch is in the right

position, both Unbalanced and Balanced Input

connectors are enabled.

IMPORTANT: The Input Select switch also func-

tions as a Ground Lift switch for the Unbal-

anced Input connector. If circulating currents/

ground loops/60-Hz Hum occur when using

the Unbalanced Input, move the Input Select

switch to the right to lift the ground on the con-

nector.

Figure 2.4 – Closeup of SIM card

Figure 2.5 – Wiring for Unbalanced or Balanced

Input Connector

Connect your input signal to the amplier’s unbal-

anced or balanced input connector as shown in

Figure 2.5. Use cables that are high quality and

shielded to minimize noise and to guard against

possible feedback.

Information subject to change 97-7224006_3-31-15

7224 OPERATOR’S MANUAL – SECTION 2

2.6 Connecting the AC Supply

The power cord connects to a standard 20 amp

3-pin IEC-type male connector on the back panel

(see Figure 2.6). Make sure the Breaker/Switch on

the front panel is switched to the OFF (O) position.

Make sure the power cord is inserted and seated

fully into the IEC connector by moving it slightly

back and forth and up and down while pushing

in. The power cord is relatively stiff and should be

routed so that there is no excessive force pulling to

the sides or up or down that would stress the pins

or internal connections. Tighten the cord strain

relief screw to lock the power cord in place.

Review the factory-set supply voltage and ampli-

er conguration detailed on the label placed on

the side of the amplier (see Figure 2.7). This

conguration can be changed by the user. See the

Advanced Conguration section for more infor-

mation.

Figure 2.6 – Closeup of AC Mains Outlet Figure 2.7 – Sample of Congurations Setting Label

2.7 Start-up Procedure

1. Turn down the level of your signal source.

2. Turn down the gain control of the amplier.

3. Depress the POWER switch to turn the

amplier ON.

4. Wait for the yellow READY and green RUN

LEDs to illuminate.

5. Adjust the level of your input signal source

to achieve the desired output level.

6. Turn up the Gain control on the amplier

until the desired voltage or power level is

achieved.

7. Adjust the input signal level to achieve the

desired output level.

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