AE Techron 2105 Operator's Manual

2105

Operator’s Manual

Gradient Amplier

574.295.9495 | www.aetechron.com

2507 Warren Street, Elkhart, IN 46516

Limited One-Year Warranty

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 subsequent 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 defective 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. (Purchaser 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.)

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 actions 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 consequential or incidental damages resulting from any defect in our product. This includes any damage to another product 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

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 [email protected]

Equipment Type: Industrial Power Amplifiers Model Name: 2105

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 Unpacking and Installation ..............................................................................................7

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

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

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

3 Connections and Startup ...............................................................................................................8

3.1 Other Operation Modes and Congurations ...................................................................... 8

3.2 Connecting the Load .......................................................................................................... 8

3.3 Connecting the Input Signal ............................................................................................... 9

3.4 Connecting the AC Supply .................................................................................................9

3.5 Start-up Procedure...........................................................................................................10

4 Amplier Operation ......................................................................................................................11

4.1 Front-Panel Controls ........................................................................................................ 11

4.2 Back-Panel Controls and Connectors .............................................................................. 16

5 Advanced Conguration ...............................................................................................................17

5.1 Conguration Access Panel .............................................................................................17

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

5.3 Conguration Settings Located on the Power Supply Board ........................................... 20

6 Applications ..................................................................................................................................23

6.1 Controlled Current Operation ........................................................................................... 23

6.2 Remote Status and Control using the SIM Interlock I/O Connector.................................27

6.3 Multi-amplier Systems .................................................................................................... 31

7 Amplier Signal Flow....................................................................................................................36

7.1 Input Signals ....................................................................................................................36

7.2 AC Mains Power ..............................................................................................................36

8 Maintenance ................................................................................................................................37

8.1 Clean Amplier Filter and Grills........................................................................................37

9 Troubleshooting ...........................................................................................................................38

9.1 Introduction & Precautions ............................................................................................... 38

9.2 Visual Inspection ..............................................................................................................38

9.3 No Signal .........................................................................................................................39

9.4 No LEDs Illuminated or No Fans .....................................................................................39

9.5 OverVoltage LED Lit ........................................................................................................39

9.6 Standby LED Remains Illuminated ..................................................................................39

9.7 Amplier Overheats (Over Temp Fault Condition) ...........................................................40

9.8 Fault LED is Illuminated ................................................................................................... 40

9.9 Factory Service ................................................................................................................ 40

10 Specications ............................................................................................................................. 42

List of Figures

Figure 1.1 – 2105 Front Panel .......................................................................................................6

Figure 3.1 – Close-up of the Output Terminal Resistor ..................................................................9

Figure 3.2 – Controlled Voltage Hookup ........................................................................................9

Figure 3.3 – Close-up of SIM card .................................................................................................9

Figure 3.4 – Input Select switch functions on the Input Terminals ............................................... 10

Figure 3.5 – Close-up of AC Mains Outlet ...................................................................................10

Figure 3.6 – Sample of Congurations Setting Label ..................................................................10

Figure 4.1 – Power Switch ........................................................................................................... 11

Figure 4.2 – Gain Control.............................................................................................................11

Figure 4.3 – Push Buttons ...........................................................................................................11

Figure 4.5 – Main Status Indicators for Stand-Alone Ampliers...................................................12

Figure 4.4 – Main and Fault Status Indicators .............................................................................12

Figure 4.6 – Fault Status Indicators for Stand-Alone Ampliers ..................................................13

Figure 4.7 – Main Status Indicators for Multi-Amplier Systems .................................................14

Figure 4.8 – Fault Status Indicators for Multi-Amplier Systems .................................................15

Figure 4.9 – Back Panel Controls and Connectors ......................................................................16

Figure 5.1 – Access Panel Screw Locations ................................................................................17

Figure 5.2 – Main Board Location Inside Access Panel...............................................................17

Figure 5.3 – Master/Slave Setting................................................................................................18

Figure 5.4 – Gain Trim Control.....................................................................................................18

Figure 5.5 – Controlled-Voltage/Controlled-Current Mode Setting ..............................................19

Figure 5.6 – Compensation Setting .............................................................................................19

Figure 5.7 – Run Mode/Stop Mode on Power-Up Setting............................................................20

Figure 5.8 – Standby Mode on Over Load Setting.......................................................................20

Figure 5.9 – Accessing the Power Supply Board .........................................................................21

Figure 5.10 – Location of Amplier High-Voltage Transformer Sockets.......................................21

Figure 5.11 – J3 and J7 Plug Locations for High-Current Output ................................................21

Figure 5.12 – J4 and J8 Plug Locations for High-Voltage Output ................................................21

Figure 5.13 – Bi-Level Power Switch Location ............................................................................22

Figure 6.1 – Input to Output Comparison, Controlled-Voltage Operation ....................................23

Figure 6.2 – Input to Output Comparison, Controlled-Current Operation ....................................23

Figure 6.3 – Factory-installed Default RC Network......................................................................24

Figure 6.5 – Compensation Effects on Waveform .......................................................................26

Figure 6.4 – Custom Compensation Location..............................................................................26

Figure 6.6 – Square Wave Showing a Decrease in R is Required ..............................................26

Figure 6.7 – Square Wave Showing an Increase in R is Required ..............................................26

Figure 6.8 – Square Wave Showing an Increase in C is Required ..............................................26

Figure 6.9 – Remote Status and Control Pinouts ........................................................................27

Figure 6.10 – Remote Status and Reset Schematic ....................................................................28

Figure 6.11 – Remote Run/Standby Monitor ................................................................................29

Figure 6.12 – Remote Enable/Standby ........................................................................................30

Figure 6.13 – Remote Current Monitoring ...................................................................................30

Figure 6.14 – Remote Current Monitoring, Alternate Method ......................................................31

Figure 6.15 – Blanking Activation.................................................................................................31

Figure 7.1 – Board-Level Functional Block Diagram ...................................................................36

Figure 9.1 – +Vcc and –Vcc Point Locations ...............................................................................38

Figure 9.2 – Fuse F1 Location .....................................................................................................39

Figure 9.3 – Interlock I/O Connector ............................................................................................39

1 Introduction

2105 OPERATOR’S MANUAL – SECTION 1

Figure 1.1 – 2105 Front Panel

The AE Techron 2105 is a high-power, DC-enabled linear amplier and integrated power supply that

offers a wide bandwidth and exceptional control of drift and distortion. The 2105 functions as a volt-

age or current source and operates using singlephase power, making it ideal for use in the lab or classroom. Its linear design provides a very-low noise oor and fast current rise times. Because the 2105 has no ripple noise, no synching with the console is required.

The AE Techron brand is known throughout the world for its robust, low-noise gradient ampliers

as well as its product service and support.

1.1 Features

• Output of 50 amperes peak, 150 volts.

• 4-quadrant linear design.

• Blanking feature lowers the noise floor on the

amplifier by shutting down the output stage.

This action occurs in less than 10 µs.

• Current mode response: DC-5 kHz (compen-

sation dependent); Voltage mode response: DC-20 kHz at rated power.

• Efficient design and light-weight chassis materials 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.

• Provides precision control of output offset, DC

drift and gain linearity.

• Protection circuitry guards against input overloads, improper output connection (including shorted and improper loads), over-temperature, over-current, and supply voltages that are too high or low.

• Shipped ready to operate from 120-volt (±10%) single-phase AC mains; 220/240-volt model available on request.

6

Information subject to change

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 2

2 Amplier Unpacking and Installation

The 2105 amplier is a precision instrument that can be dangerous if not handled properly. Lethal voltages are present in both the AC input supply and the output of this amplier. 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.

DANGER

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.

WARNING

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.

CAUTION

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.

Along with any additional accessories purchased by the customer, all 2105 ampliers ship with the following:

• 2105 Amplifier

• Toolkit (contains one #2 Phillips screwdriver

and four rubber feet)

• Power Cord

• 2105 Operator’s Manual and Quick Start sheet

2.3 Installation

The 2105 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.

2.2 Unpacking

All ampliers are tested and inspected for damage 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 returning the amplier for repair.

97-2105006_4-2-15

Do not operate the amplier in a small sealed chamber of any kind. Improper

operations and overheating will result.

Information subject to change

CAUTION

7

2105 OPERATOR’S MANUAL – SECTION 3

3 Connections and Startup

This section details the wiring and startup procedures for a single 2105 amplier operating in Controlled-Voltage mode (factory default). Before connecting the amplier, make sure the AC power cord is unplugged.

WARNING

ELECTRIC SHOCK HAZARD.

Output potentials can be lethal. Make

connections only with AC Power OFF and input signals removed.

3.1 Other Operation Modes and

Congurations

The 2105 amplier can be eld-congured for

operation in a number of different ways. These

would include Controlled-Voltage or ControlledCurrent mode, and it also can be congured for operation as a part of a multi-amplier system. These alternate congurations may require special output wiring and/or additional components.

3.1.1 Controlled-Current Operation of a

Stand-Alone Amplier

If your application requires Controlled-Current operation, the 2105 amplier rst should be wired and tested in Controlled-Voltage mode to verify that the amplier and input signal are operating correctly. Once proper operation is conrmed,

refer to the “Applications” section of this manual

for instructions on conguring and operating your amplier in Controlled-Current mode.

3.1.2 Multi-Amp Operation

If your application requires multi-amp operation for increased voltage or current, each amplier should rst be wired and tested individually in ControlledVoltage mode to ensure proper operation.

For Series operation in Controlled-Voltage mode, refer to the Multi-Amp Conguration

Guide (available for download from aetechron. com) for information on Series system congura-

tion.

For Series operation in Controlled-Current

mode, you should select one amplier to be operated as the “Master” amplier of the system, and

then refer to the “Applications” section of this

manual for instructions on conguring this amplier for operation in Controlled-Current mode. After the Master amplier is congured and tested for

Controlled-Current operation, refer to the Multi-

Amp Conguration Guide (available for download from aetechron.com) for information on Series system conguration.

For Parallel operation in Controlled-Voltage mode, refer to the Multi-Amp Conguration

Guide (available for download from aetechron.com) for information on Parallel system conguration.

For Parallel operation in Controlled-Current mode, please contact AE Techron Technical Support for assistance.

3.2 Connecting the Load

3.2.1 Preparation and Cautions

Before connecting the amplier, make sure the

AC power is disconnected.

Always use the appropriate wire size and insulation 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 supply, signal source, or other inappropriate load; re

can result.

NOTE: The 2105 amplier comes with a factoryinstalled 2.7-ohm, 2W, 5%, metal-oxide resistor connecting the terminals marked “COM and “CHASSIS GROUND” (see Figure 3.1). This

resistor should NOT be removed except when the

amplier is being used as a Slave amplier in a

Series multi-amp system. WARNING: Removing this resistor can cause dangerous output and/ or damage to the load.

3.2.2 Connecting the Outputs

Connection to the output of the amplier is to a 3-position terminal strip with #8 screws. Wires

8

Information subject to change

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 3

terminated with #8 to ¼ in. ring terminals, tinned wires up to 10GA in size, or bus bars with 0.20 in. (5 mm) OD holes (minimum) up to 0.50 in. (12.7 mm) OD holes (maximum) are recommended when connecting to the output terminals.

Connect the load across the terminals marked

“OUTPUT” (positive) and “COM” (negative/ ground). The third terminal, “CHASSIS GROUND” is connected to the amplier chassis/power cord ground and can be connected to an external ground point such as the rack chassis. See Figure

3.2.

3.3 Connecting the Input Signal

The signal is connected to the amplier through a “SIM” (Specialized Input Module) located on the amplier back panel (see Figure 3.3). The SIM

card offers the choice of BNC or terminal block input connectors.

Figure 3.1 – Close-up of the Output Terminal Resistor

The Input Select switch, located on the SIM module between the input connectors, allows convenient selection of balanced or unbalanced input

wiring and also can function as a ground-lift switch

for the BNC input connector. The Input Select

switch functions by connecting/ disconnecting the inverting (–) pin on each input connector to the amplier ground through a 4.7-ohm resistor (see Figure 3.4). When the Input Select switch is in the LEFT position, the shield on the BNC connector and the inverting (–) pin on the terminal block connector are tied to the amplier ground, allowing the connectors to be used for Unbalanced input wiring. When the Input Select switch is in the RIGHT position, the inverting (–) pin on the terminal block connector is oating, allowing the connector to be used for Balanced input wiring.

IMPORTANT: The Input Select switch can also

function as a Ground Lift switch for the BNC Input connector. If circulating currents/ground loops/60-Hz Hum occur when using the BNC Input, move the Input Select switch to the right to lift the ground on the connector.

Figure 3.2 – Controlled Voltage Hookup

Figure 3.3 – Close-up of SIM card

We recommend that you use cables that are high quality and shielded to minimize noise and to guard against possible feedback.

Note: See the “Applications” section for informa-

tion on using the Interlock – I/O Connector located

on the SIM card.

3.4 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 3.5). Make sure the Breaker/Switch on

97-2105006_4-2-15

Information subject to change

9

2105 OPERATOR’S MANUAL – SECTION 3

Figure 3.6 – Sample of Congurations Setting Label

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 3.6). This conguration can be changed by the user. See

the “Advanced Conguration” section for more information.

3.5 Start-up Procedure

3.5.1 Voltage-Mode Operation

Figure 3.4 – Input Select switch functions on the

Input Terminals

Figure 3.5 – Close-up of AC Mains Outlet

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.

Perform the following steps to startup and operate your amplier in Controlled-Voltage.

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.

3.5.1 Current-Mode Operation

Before conguring your amplier for Current mode operation, it is important to verify the amplier is operating correctly in Voltage mode. Perform the

steps provided in the “Voltage-Mode Opera- tion” Start-up Procedure to test the amplier in

Controlled-Voltage mode. Use care if your load is very-low impedance since high currents can be

caused by low input levels. Then refer to the “Applications” section of this manual for instructions

on Controlled-Current conguration and operation.

10

Information subject to change

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 4

4 Amplier Operation

4.1 Front-Panel Controls

This section provides an overview of Front-Panel controls and indicators found on the 2105.

4.1.1 Power Switch

The Power Switch controls the AC mains power to

the amplier. Switch to the ON position (|) to turn the amplier on. Switch to the OFF position (O) to turn the amplier off. See Figure 4.1.

The Power Switch also serves as a Breaker. When the Breaker is tripped, the Power Switch moves to a neutral position between ON and OFF. To reset

the Breaker, turn the amplier OFF (O) and then turn it back ON (I).

4.1.2 Gain Control

The Gain Control Knob increases/decreases the gain from 0 – 100% of the overall Gain (factory default Gain is 20V/V in voltage mode and 5A/V in current mode). See Figure 4.2. See the “Ad-

vanced Conguration” section for information on

how to make the amplier xed-gain.

4.1.3 Push Buttons

The 2105 provides three front-panel soft-touch

Push Buttons (see Figure 4.3):

Enable – For stand-alone ampliers, Enable will

release the amplier from Standby mode and place the amplier in Run mode (both Ready and Run LEDs will be lit). When the amplier is placed in Run mode, the amplier will amplify the input signal. If an amplier is disabled using a Remote Standby application, the amplier will be placed in Ready mode (both Ready and Standby LEDs will be lit). To return the amplier to Run mode, release the Standby condition using the remote switch.

See the “Applications” section of this manual for

more information on remote amplier operation.

By default, the amplier will automatically be

Enabled and enter Run mode on power-up. To

change the factory-default setting and congure

Figure 4.1 – Power Switch

Figure 4.2 – Gain Control

Figure 4.3 – Push Buttons

the amplier to power-up in Standby mode, please

see the “Advanced Conguration” section.

In multi-amp systems that have been congured to start up in Run mode (factory default setting), when an amplier is powered on, the amplier will be placed in Ready mode (Ready and Standby LEDs lit) and remain in Ready mode until all ampliers in the system have been powered on. The

system will automatically proceed to Run mode

when all ampliers in the system are powered on

and achieve Ready mode.

In multi-amp systems that have been congured to start up in Standby mode, when an amplier is powered on, the amplier will be placed in Standby mode (Stop and Standby LEDs lit). When the

97-2105006_4-2-15

Information subject to change

11

Enable button is pressed on each amplier, that amplier will be placed in Ready mode (Ready and Standby LEDs lit) and remain in Ready mode until all ampliers in the system have been Enabled.

The system will automatically proceed to Run

mode when all ampliers in the system achieve

Ready mode.

Stop – For stand-alone ampliers, Stop will place the amplier in Standby mode (both Standby and Stop LEDs will be lit). When the amplier is part of a multi-amp system, pressing the Stop button on any amplier in the system will place all ampliers in Standby mode. When an amplier is in Standby mode, the low-voltage transformer is energized but the high-voltage transformers are not.

2105 OPERATOR’S MANUAL – SECTION 4

Figure 4.4 – Main and Fault Status Indicators

all of the ampliers to Run mode if the condition causing the fault condition has been cleared; however, pressing the Reset button on other ampliers

in the system will NOT clear the fault condition. Refer to the “Fault Status Indicators” section for information on how to clear fault conditions and

restore amplier operation.

Reset – For stand-alone ampliers, when the amplier has stopped due to a fault condition, pressing the Reset button will return the amplier to Run mode if the condition causing the fault condition has been cleared. When the amplier is part of a multi-amp system, pressing the Reset button on the amplier reporting the fault condition will return

4.1.4 Main Status Indicators

Four Main Status indicators are located on the

amplier’s front-panel (see Figure 4.4). These LEDs monitor the internal conditions of the amplier and indicate the current state of operation. The

chart in Figure 4.5 details the operational modes indicated by the Main Status indicators.

Figure 4.5 – Main Status Indicators for Stand-Alone Ampliers

Indicator is lit Indicator is not lit Indicator may be lit

Main Status Indicators State of Operation

Run

Ready

Standby

Stop

Run

Ready

Standby

Stop

Run

Ready

Standby

Stop

Run mode: The amplier’s high-voltage transformers are energized and the unit will amplify the input signal. Run mode is initiated by: (1) the Enable push button, or (2) when the amplier powers up in Run mode (factory default). See the “Advanced Conguration” section for

more information.

Standby mode: Standby mode indicates that the am-

plier is functioning properly and all Fault Status modes are clear, but it is being held in Standby by an external condition. As congured from the factory (Run mode on startup), the amplier will enter Standby mode briey after powering up, and then will move automatically into Run mode. In Standby mode, the amplier’s low-voltage transformer is energized but the high-voltage transformers

are not.

Stop mode: When the Stop button on the amplier front panel is pressed, the amplier will enter Stop mode. The amplier may also enter Stop mode after powering up if the amplier is congured to enter Stop mode on startup. In Stop mode, the amplier’s low-voltage transformer is energized but the high-voltage transformers are not.

Action Needed to Return to Run Mode

N/A

If the amplier remains in Standby mode, it is being held in Standby by remote control through the SIM Interlock I/O connector. Open the Enable/Standby switch to

clear this remote Standby condition and

return the amplier to Run mode. See the

“Applications” section of this manual

for more information on remote amplier

operation.

To release the amplier from Stop mode,

press the Enable button.

12

Information subject to change

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 4

4.1.5 Fault Status Indicator

Four Fault Status indicators are located on the

amplier front panel (see Figure 4.4). These LEDs monitor the internal conditions of the amplier

and will illuminate when a fault condition occurs.

Depending on the fault condition and the congu-

ration of the unit, the amplier may be placed in

Standby mode when a fault condition occurs. Refer to the chart in Figure 4.6 to determine the fault

condition being indicated and the action required

to clear the fault condition.

Figure 4.6 – Fault Status Indicators for Stand-Alone Ampliers

Indicator is lit Indicator is not lit Indicator may be lit

Main Status Indicators

Run

Ready

Standby

Stop

Run

Ready

Standby

Stop

Run

Ready

Standby

Stop

Run

Ready

Standby

Stop

Fault Status Indicators State of Operation

Output Fault status: This indicates

that an Output Fault condition has oc-

Fault

Over Load

Over Temp

Over Voltage

Fault

Over Load

Over Temp

Over Voltage

Fault

Over Load

Over Temp

Over Voltage

Fault

Over Load

Over Temp

Over Voltage

curred and the amplier has been placed

in Standby mode. The Fault indicator

will light under two conditions: 1) Highfrequency oscillation is causing high shoot-through current; or 2) An output transistor has shorted, causing the output

fault condition.

Over Load status: This indicates that

the output of the amplier could not follow the input signal due to voltage or current limits. Under normal operation with the factory-default settings, an Over Load condition will not place the amplier in Standby mode. If the amplier has been congured to be forced to Standby on Over Load, the amplier will be placed in Standby mode when the Over Load indicator lights.

Over Temp status: The amplier monitors the temperature inside the highvoltage transformers, low-voltage transformer and in the output stage heat sinks. The Over Temp indicator will light and the amplier will be placed in Standby mode

when the temperature sensors detect a

condition that would damage the amplier. If the Over Temp pulse is extremely short, as in the case of defective wiring or switches, the Over Temp LED may be lit too briey to observe.

Over Voltage status: This indicates

that the AC mains voltage is more than +10% of nominal. The amplier will be forced to Standby when an Over Voltage condition occurs. When the Over Voltage condition is cleared, the amplier will auto-

matically return to Run mode.

Action Needed to Clear Fault Condition and Return to Run Mode

This fault condition cannot be cleared

using the front-panel Reset button. See

the “Trouble- shooting” section for more informa-

tion on diagnosing and clearing this fault

condition.

To remedy the Over Load fault during

operation, turn down the level of the input

signal until the Over Load indicator turns off. To clear an Over Load fault condition when the amplier is forced to Standby, turn down the level of the input signal,

then push the Reset button.

To reset after an Over Temp fault has

occurred, make sure the fans are running, and then remove the input signal from the amplier. Allow the fans to run for about 5 minutes until the amplier automatically returns to Run mode. If the amplier has been congured for Standby mode on Over Temp, then the amplier will not

automatically return to Run mode. In that case, push the Reset button to return the

amplier to Run mode. See the “Trouble- shooting” section for information on cor-

recting the cause of an Over Temp fault

condition.

To clear an Over Voltage fault condition, the AC mains must be brought down to the nominal value. If the amplier does

not return to Run mode when the Over

Voltage condition has cleared, the amplier may require servicing. Please see

the “Troubleshooting” section for more information.

97-2105006_4-2-15

Information subject to change

13

2105 OPERATOR’S MANUAL – SECTION 4

4.1.6 Main Status Indicators for

Multi-amplier Systems

The Main Status indicators on each amplier in

a multi-amp system are used to determine the

operational status of the amplier. When evaluated along with the statuses of other ampliers in the

system, the Main Status indicators can be used to determine the system status and the action

required to return the system to Run mode. See

Figure 4.7.

4.1.7 Fault Status Indicators for Multi-Amp Systems

The four Fault Status indicators located on each

amplier’s front panel are used to monitor the internal conditions of the amplier and will illuminate when a fault condition occurs. All ampliers in

the system may be placed in Standby mode when

a fault condition occurs, depending on the fault condition and the conguration of the system. Typi-

cally, the system can be released from Standby mode by pressing the Reset button on the ampli-

Figure 4.7 – Main Status Indicators for Multi-Amplier Systems

Indicator is lit Indicator is not lit Indicator may be lit

Main Status of One or More Amps in the System

Run

Ready

Standby

Stop

Run

Ready

Standby

Stop

Main Status of Other Amps in the System State of Operation

Run

Ready

Standby

Stop

Run

Ready

Standby

Stop

Run mode: All of the ampliers in the system are in Run mode. The ampliers’ high-voltage transformers are energized

and the system will amplify the input

signal.

Remote Standby Condition: All of

the ampliers in the system are being

held in Standby mode by an external condition. In Standby mode, the ampli-

ers’ low-voltage transformers are energized but the high-voltage transformers

are not.

Action Needed to Return to Run Mode

N/A

If the ampliers remain in Standby mode, the system is being held in Standby by remote control through the SIM Interlock I/O connector. Open the Enable/Standby switch to clear this

remote Standby condition and return the system to Run mode. See the ”Applications” section of this manual for more information on remote ampli-

er operation.

Run

Ready

Standby

Stop

Run

Ready

Standby

Stop

Run

Ready

Standby

Stop

Run

Ready

Standby

Stop

14

System Not Ready: If one or more

of the ampliers has no LEDs lit, the amplier has no power or has not been turned on, and the other ampliers in the

system will be held in Standby mode.

In Standby mode, the amplier’s lowvoltage transformer is energized but the high-voltage transformers are not.

Stop mode: When the Stop button on

any amplier in the system is pressed, that amplier will enter Stop mode and all other ampliers will enter Standby

mode. The system may also enter Stop

mode after powering up if one or more ampliers in the system is congured

to enter Stop mode on startup. In Stop

mode, the amplier’s low-voltage transformer is energized but the high-voltage

transformers are not.

Information subject to change

Make sure all ampliers have AC

power and have been turned on. When

all ampliers attain Standby status, all ampliers in the system will simultane-

ously be placed in Run mode.

To release the system from Stop mode, press the Enable button on the ampli-

er displaying the Stop mode status.

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 4

er displaying the Fault status. Refer to the chart in Figure 4.8 to determine the fault condition being

indicated and the action required to clear the fault

condition and return the system to Run mode.

Figure 4.8 – Fault Status Indicators for Multi-Amplier Systems

Indicator is lit Indicator is not lit Indicator may be lit

One or More Amps in System

Fault Status Main Status Indicators

Run

Ready

Standby

Stop

Run

Ready

Standby

Stop

Run

Ready

Standby

Stop

Reported on

LCD Display

WARNING!

OUTPUT DE-

VICE FAULT

WARNING!

OVERLOAD

WARNING!

OVERTEMP

Main Status Indicators of Other Amps in System State of Operation

Output Device Fault status: This indicates that an Out-

put Fault condition has occurred

in the amplier displaying the

Run

Ready

Standby

Stop

Run

Ready

Standby

Stop

Run

Ready

Standby

Stop

Fault status, and the system has been placed in Standby mode.

The Fault indicator will light under two conditions: 1) Highfrequency oscillation is causing high shoot-through current; or 2)

An output transistor has shorted, causing the output fault condition.

Overload status: This indicates that the output of the system could not follow the input

signal due to voltage or current limits. Under normal operation with the factory-default settings,

an Overload condition will not place the system in Standby mode. If the system has been congured to be forced to Standby on Overload, the system will be placed in Standby mode

when the Fault indicator lights.

Overtemp status: Each am-

plier in the system monitors the temperature inside the high-voltage transformers, low-voltage

transformer and in the output

stage heat sinks. The Overtemp indicator will light and the system

will be placed in Standby mode when the temperature sensors detect a condition that would

damage the amplier system. If

the Overtemp pulse is extremely short, as in the case of defective

wiring or switches, the Fault LED may be lit too briey to observe.

Action Needed to Clear Fault Condition and Return to Run Mode

This fault condition cannot be

cleared using the front-panel

Reset button. See the ”Troubleshooting” section for more

information on diagnosing and clearing this fault condition.

To remedy the Overload fault

during operation, turn down the level of the input signal until

the Overload indicator turns off. To clear an Overload fault

condition when the amplier is

forced to Standby, turn down

the level of the input signal,

then push the Reset button on

the amplier(s) displaying the

Overload status.

To reset after an Overtemp fault has occurred, make sure

the amplier fans in all ampliers are running, and then remove the input signal from

the system. Allow the fans to run for about 5 minutes until the system automatically returns to Run mode. If the system has

been congured for Standby

mode on Overtemp, then the system will not automatically return to Run mode. In that case, push the Reset button on any amplier displaying the Overtemp status to return the system to Run mode. Please see the ”Troubleshooting” section

for information on correcting

the cause of an Overtemp fault condition.

97-2105006_4-2-15

Information subject to change

15

2105 OPERATOR’S MANUAL – SECTION 4

One or More Amps in System

Fault Status Main Status Indicators

Run

Ready

Standby

Stop

Reported on

LCD Display

WARNING!

OVERVOLTAGE

Main Status Indicators of Other Amps in System State of Operation

Overvoltage status: This

indicates that the AC mains

voltage is more than +10% of

Run

Ready

Standby

Stop

nominal. All ampliers in the

system will be forced to Standby

when an Overvoltage condition occurs. When the Overvoltage

condition is cleared, the system will automatically return to Run mode.

4.2 Back-Panel Controls and Connectors

This section provides an overview of Back-Panel controls and connectors found on the 2105 ampli-

er. Please refer to Figure 4.9 for visual locations.

AC Supply - Standard 20 amp 3-pin IEC-type

male connector.

Output Terminal Strip - Connect output lines from the load to this 3-position terminal strip with 5 mm

screws. It accepts up to #10 AWG wire.

BNC Input Connector - This input option provides a standard unbalanced input. It can also be used as a balanced input.

Input Selector Switch – When the Input Select

switch is in the LEFT position, the shield on the BNC connector and the inverting (–) pin on the terminal block connector are tied to the amplier

Action Needed to Clear Fault Condition and Return to Run Mode

To clear an Overvoltage fault

condition, the AC mains must be brought down to the nominal value. If the system does not return to Run mode when

the Overvoltage condition has cleared, one or more ampliers may require servicing. Please

see the “Troubleshooting” section for more information.

ground through a 4.7-ohm resistor, allowing the connectors to be used for Unbalanced input wiring. When the Input Select switch is in the RIGHT position, the inverting (–) pin on the terminal block connector is oating, allowing the connector to be used for Balanced input wiring. The Input Select switch also functions as a Ground Lift switch for

the BNC input connector.

Terminal Block Input Connector - This input option provides a balanced input. It can also be used as an unbalanced input.

Interlock Connector - This 25-pin, D-sub connector is used for interlocking and combining functions

in a multi-amp system. It can also be used for re-

mote control and monitoring applications (see the ”Applications” section for more information).

Figure 4.9 – Back Panel Controls and Connectors

16

Information subject to change

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 5

5 Advanced Conguration

The 2105 amplier was designed to offer exceptional versatility in operation. You can choose from a range of eld-congurable options, including:

• Operate as a stand-alone amplifier or as part of a multiple-amplifier system.

• Operate with variable gain control or at a fixed

gain setting of 20.

• Select Controlled-Current or Controlled-Voltage modes of operation.

• Trigger Standby mode when specified fault

conditions occur during operation.

• Select the Stop mode state at power-up, or go immediately to the Run mode state at power-up.

• Configure for use in high voltage applications,

high current applications, or for applications requiring mid-level amounts of both voltage

and current.

Your 2105 amplier has been pre-congured to your specications before shipping from the factory. These initial settings are detailed on your

Proof of Performance sheet and on a label located

on the side of the amplier.

WARNING

Do not attempt to access the Main Board

while the amplier is running. Turn the amplier off and disconnect the AC Mains before removing the amplier

front panel.

CAUTION

After turning the amplier off, let the unit

sit for 3-5 minutes before removing the

front panel. This will allow the electrical

charge in the Power Supply capacitors to discharge.

2. Using a #2 Phillips screwdriver (provided), remove the 8 screws located on the top and side

of the amplier.

3. Remove the Access Panel and set it aside.

If you need to make changes to your amplier’s conguration, please follow the instructions con-

tained in this chapter.

5.1 Conguration Access Panel

The 2105amplier contains an Access Panel built into the top cover. Most conguration settings can be made through this Access Panel. For your convenience, a #2 Phillips screwdriver is provided

in your Toolkit for use in this procedure.

IMPORTANT: Before removing the Access Panel, make sure the amplier is turned off

for at least 3-5 minutes and the AC mains are disconnected.

1. Locate the Access Panel as shown in Figure

5.1. Make sure that all 8 screws are acces-

sible. Remove the unit from its rack, if necessary.

Figure 5.1 – Access Panel Screw Locations

Figure 5.2 – Main Board Location Inside

Access Panel

97-2105006_4-2-15

Information subject to change

17

5.2 Conguration Settings Located on the Main Board

The following custom settings can be made via jumper settings on the Main Board, which is

located inside the Access Panel compartment, as shown in Figure 5.2.

• Master/Slave setting for stand-alone or multi-

ple-amplifier systems.

• Variable or Fixed Gain setting.

• Controlled Current/Controlled Voltage setting.

5.2.1 Master or Slave Setting

To enable the 2105 amplier for use as a single amplier or as the Master amplier in a multi-amplier system, set jumpers P1 and P2 in the Master position (jumpers across top two pins of each set). To enable the 2105 amplier for use as a Slave amplier in a multi-amplier system, set jumpers P1 and P2 in the Slave position (jumpers across bottom two pins of each set). See Figure 5.3.

2105 OPERATOR’S MANUAL – SECTION 5

• Compensation setting to select RC network when operating in Controlled Current mode.

• Stop Mode/Run Mode setting for selection of power-up state.

• Standby mode on Over Temp setting to trigger Standby mode when amplifier senses an OverTemperature state.

• Standby mode on Over Load setting to trigger Standby mode when amplifier senses an Over

Load state.

For complete information on multi-amp system

conguration and wiring, please consult the AE

Techron Multi-Amp Conguration Guide available for download from the AE Techron website at

www.aetechron.com.

5.2.2 Fixed Gain/Variable Gain Setting

The 2105 amplier ships with an enabled Gain Control knob (located on the amplier front panel).

To disable the Variable Gain control and set for a Fixed Gain of 20, locate and unplug the red con- nector from jumper J10. Then place a jumper on the left two pins at that location. See Figure 5.4.

Figure 5.3 – Master/Slave Setting

Figure 5.4 – Gain Trim Control

18

Information subject to change

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 5

In Controlled-Current Mode, the load is part of the amplier circuit, and the relationship of the load to the amplier is critical. For proper and safe operation in Controlled-Current mode, you must obverve the following guidelines:

1. Properly attach a load before operating the amplier. Use only the Output and Sampled Common terminals. DO NOT use the Common terminal.

2. DO NOT use a blocking capacitor. The load must have a DC path.

3. Never leave the load open. If you feel the load must be fused, which could lead to a poten-

tial open circuit, please contact AE Techron Application Engineering department.

4. Check to make sure the load has some inductive component.

5. Provide appropriate Compensation for the load.

6. Turn of the amplier immediately if oscillation occurs.

Failure to follow these guidelines may result in damage to the amplier

or load.

CAUTION

5.2.3 Controlled Voltage or Controlled Current Setting

To allow the 2105 amplier’s output voltage to be controlled by its input voltage signal (CV mode), place Jumper J4 in the RIGHT position (right pair of pins). To allow the 2105 amplier’s output current to be controlled by its input voltage signal (CC mode), place Jumper J4 in the LEFT position (left

pair of pins). See Figure 5.5. For more informa-

tion on Controlled-Current operation, see the “Applications” section of this manual.

5.2.4 Compensation Setting (applies to Controlled Current operation only)

When the 2105 amplier is used in Controlled Current (CC) mode, the current control loop is tuned with one of two available RC networks: CC1 (R63 and C16) or CC2 (R82 and C25). Place Jumper

J5 in the UP position to select the CC1 network

(factory default). Place Jumper J5 in the DOWN position to select the CC2 network. See Figure

5.6. For more information on Controlled-Current

operation, see the “Applications” section of this manual.

Figure 5.5 – Controlled-Voltage/

Controlled-Current Mode Setting

Figure 5.6 – Compensation Setting

97-2105006_4-2-15

Information subject to change

19

5.2.5 Ready/Run Mode or Standby Mode Power-up

The 2105 amplier will bypass Standby Mode and cycle directly to Ready/Run Mode on power-up when Jumper J11 is in the Left position (factory default). To set the amplier to power-up to Stand-

by Mode, place Jumper J11 in the Right position. See Figure 5.7.

5.2.6 Standby Mode on Overload

When enabled, the 2110/2120 amplier will move

into Standby Mode when it senses an activation of

the IOC (Input/Output Comparator) Distortion Alert circuit. The IOC Distortion Alert circuit continu-

ously compares the input waveform to the output

waveform. When a distortion of more than 0.5%

occurs, the IOC circuit will activate. The ampli-

er will remain in Standby Mode until the Reset

switch on the front panel is pushed or a Reset

signal is received on the Interlock – I/O Connector. Once reset, the amplier will return to Ready/Run (operational) Mode. To enable Standby Mode on

Overload, place the jumper across the two pins labeled J13. See Figure 5.8.

5.3 Conguration Settings Located on

the Power Supply Board

The following custom settings can be made via plug-in connectors located on the Power Supply

Board:

• Amplifier Voltage Potential setting (high current

or high voltage)

• Bi-Level Power Supply setting

2105 OPERATOR’S MANUAL – SECTION 5

Figure 5.7 – Run Mode/Stop Mode

on Power-Up Setting

Figure 5.8 – Standby Mode on Over Load Setting

5.3.1 Selecting the Best Voltage Potential and Bi-Level Power Switch Settings for Your Application

The output of the amplier will be determined by the combination of settings used for both Voltage Potential and Bi-Level Power Switch.

OUTPUT VOLTAGE

Bi-Level

Switch Setting

Auto 45-90 90-180

High 90 180

Low 45 90

Voltage Potential Setting

90 180

20

Information subject to change

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 5

Use the following general guidelines to select the best combination of settings to t your requirements:

LOAD

OUTPUT

High

Voltage 16, 8 ohm

Mid-Level 4, 2 ohm 2, 1 ohm

High

Current 1, 0.5 ohm

Also see the “9 Specications” on page 43section for more information.

5.3.2 Accessing the Power Supply Board

To access the Power Supply Board, follow the in-

structions given at the beginning of this Section to open the Conguration Access Panel. The Power Supply Board is located to the right of the Main

Board, as shown in Figure 5.9.

16, 8, 4

ohm

0.75 - 0.25 ohm

SettingsContinuous Pulse

180 V

Auto

90 V Auto

90 V

Low

Figure 5.10 – Location of Amplier High-Voltage

Transformer Sockets

Figure 5.9 – Accessing the Power Supply Board

5.3.3 Changing Amplier Voltage Potential

The 2105 can be congured for High Current (90V) or High Voltage (180V) operation via userselectable plugs on the Power Supply Board. Complete the following steps to change the amplier voltage potential.

Figure 5.11 – J3 and J7 Plug Locations for

High-Current Output

Figure 5.12 – J4 and J8 Plug Locations for

High-Voltage Output

1. Locate the two XFMR sections (left of Line Voltage sections) (see Figure 5.10).

2. For High Current (90V) Output (see Figure

5.11).

3. For High Voltage (180V) Output (see Figure

5.12).

97-2105006_4-2-15

Information subject to change

21

5.3.4 Changing Bi-Level Power Supply Function

The 2105offers three Bi-Level switch settings: Automatic, High, or Low. The user can select between settings via a switch on the Power Supply

Board.

To access and change the Bi-Level Power Switch,

follow these steps:

1. Locate the SIM Input Card on the right side of

the rear panel of the amplier.

2. Using a #2 Phillips screwdriver (provided),

remove the 2 screws located at the edges of

the SIM card.

3. Keeping the ribbon cable attached, remove the

SIM card from the amplier until it is completely

clear from the card bay.

4. Locate Bi-Level Power Switch, S1, a black,

three-position switch at the rear of the card

bay.(See Figure 5.13)

5. Move the Black switch to desired setting. If

necessary, use a pointed, non-metallic object

(such as a pen) to help in moving the switch.

a. Automatic – Left

b. Low – Middle

2105 OPERATOR’S MANUAL – SECTION 5

Figure 5.13 – Bi-Level Power Switch Location

5.3.5 Selecting the Best Voltage Potential and Bi-Level Power Switch Settings for Your Application

The output of the amplier will be determined by the combination of settings used for both Voltage Potential and Bi-Level Power Switch.

OUTPUT VOLTAGE

BI-LEVEL

SWITCH

SETTING

AUTO 45 - 90 90 - 180

HIGH 90 180

LOW 45 90

VOLTAGE POTENTIAL SETTING

High Current

(90V)

High Voltage

(180V)

c. High – Right

22

Also see the “Specications” section for more information.

Information subject to change

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 6

6 Applications

6.1 Controlled Current Operation

The procedures outlined in this section assume competence on the part of the reader in terms of

amplier systems, electronic components, and good electronic safety and working practices.

6.1.1 Controlled-Voltage vs. Controlled-Current Modes of Operation

AE Techron 2105 ampliers can be eldcongured to operate as Voltage Ampliers (Voltage-Controlled Voltage Source) or as Trans- conductance Ampliers (Voltage-Controlled Current Source). The mode selection is made via a jumper setting located on the amplier main board.

See the ”Advanced Conguration” section for more information.

Conversely, when congured as a ControlledCurrent source (transconductance amplier), the

amplier will provide an output current that is constant and proportional to the control (input) voltage. If the load’s impedance changes, the amplier will seek to maintain this transconductance (ratio of input voltage to output current) by increasing or decreasing the voltage it produces, as long as it is within the amplier’s ability to create the required voltage. Use this mode if you want the output current waveform to be like the input waveform (see Figure 6.2).

When congured as a Controlled-Voltage source (voltage amplier), the amplier will provide an output voltage that is constant and proportional to the control (input) voltage. If the load’s impedance changes, the amplier will seek to maintain this ratio of input to output voltage by increasing or decreasing the current it produces, as long as it is within the amplier’s ability to create the required current. Use this mode if you want the output voltage waveform to be like the input waveform (see Figure 6.1).

Figure 6.1 – Input to Output Comparison,

Controlled-Voltage Operation

Figure 6.2 – Input to Output Comparison,

Controlled-Current Operation

6.1.2 Safety and Operation Considerations for Controlled Current Operation

When an AE Techron amplier is congured as

a Controlled Current source, care needs to be exercised in its operation. Any voltage controlled

current source should never be turned on without a load, (with some impedance, real or effective) connected to its output terminals.

When asked to operate in this way, any current

source (including an AE Techron amplier) will increase its output voltage in an attempt to drive the requested current into the load. In an open-circuit condition, creating current ow will be impossible. The current source will increase its output voltage until it reaches its voltage limit. This is a potentially dangerous condition for both the AE Techron amplier and for any user who might come in contact with the amplier output terminals.

97-2105006_4-2-15

Information subject to change

23

2105 OPERATOR’S MANUAL – SECTION 6

When operating in Controlled Current (CC) mode, a compensation circuit is required to ensure ac-

curate output current. Since the load is a critical circuit component in CC mode, the inductive and resistive values of the load will determine the

required compensation values. While the factorydefault compensation setting will be sufcient for some applications, the compensation setting may also be adjusted in the eld. The following section describes methods for determining and setting proper compensation when operating in

Controlled-Current mode.

6.1.3 Controlling Compensation for CC Operation

AE Techron 2105 ampliers can be congured for either Controlled Voltage (CV) or Controlled Current (CC) mode of operation. When operating the amplier in Controlled Voltage (CV) mode, compensation is not required. However, when operating in Controlled Current (CC) mode, the amplier load becomes an integral part of the system. In

order to ensure system stability and to control available bandwidth, compensation via an RC

network is required for CC operation. The following steps will allow you to compensate your amplier

for operation in CC mode safely and effectively.

STEP 1: Check Amplier Operation in CV mode.

We recommend that you power-up and enable the

amplier in Controlled Voltage mode without attaching a load before conguring your amplier for

Controlled Current operation. This will allow you

to verify that the input signal and the amplier are operating correctly.

Once this initial check is completed, power down

the amplier and access the amplier main board to place the amplier in CC mode. (Refer to the “Advanced Conguration” section for more infor- mation.)

One of two compensation settings can be selected

via jumpers on the main board: CC1 which en-

ables the factory-installed RC network (see Figure

6.3), or CC2 which allows installation of a custom

RC network.

Figure 6.3 – Factory-installed Default RC Network

STEP 2: Determine Required Compensation.

When operating an amplier in Controlled Current mode, the load becomes an integral part of the system. In order to determine the required compensation for your load, begin by consulting the following table to determine the approximate compensation capacitance (C) required based on

the inductance of your load:

Load Inductance (L)

<200 µH

Compensation

Capacitance

(CC)

NOTE: Load Resistance (R) is assumed to be

<5 ohms.

STEP 3: Determine if Default or Custom Compensation is Required.

If your load inductance is between 200 microHenries and 1 milliHenry, and your load resistance

is less than 5 ohms, then you can likely use the

default compensation provided by the amplier’s

factory-installed RC network. To select the factorydefault compensation, please see STEP 4 to follow.

0.001 µF 0.01 µF 0.1 µF

<>200 µH

to <1 mH

>1 mH

24

Information subject to change

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 6

If your load inductance falls outside of the mid-

range, or if your load resistance is greater than 5 ohms, then you must calculate your required compensation. If, after calculating your required

compensation, you determine that the default com-

pensation will be insufcient for your load, then

you will need to enable and install a custom RC network. See STEP 6 below.

STEP 4: Enabling Your Compensation Setting.

AE Techron 2100 Series ampliers can be enabled with one of two compensation settings: default RC network or custom RC network. The required

network can be selected via jumpers on the main

board. CC1 enables the default (factory-installed)

RC network, while CC2 allows installation of a custom RC network. Figure 6.3 describes the default RC circuit.

To select CC1, place jumper J5 in the UP position; to select CC2, place jumper J5 in the DOWN position. (For jumper location, see the ”Advanced Conguration” section.)

IMPORTANT: If CC2 is selected, you must calculate the compensation requirements for your

custom RC network and install the network on your amplier main board before operating the amplier in CC mode.

STEP 6: Installing an RC Network for Custom Compensation

If the default RC network does not provide suitable compensation for your intended load, you will need to install a custom RC network that is

matched to your load. This network will require two components (a resistor (R) and a capacitor (C))

to be installed on the main board. To calculate the

approximate values required for each component, use the following formulas.

COMPENSATION FORMULAS:

To nd the value for the resistor (Rc) in the RC network:

Rc = 20,000 x 3.14 x L x BW

where:

Rc is compensation resistance in ohms.

L is load inductance in henries.

BW is bandwidth in hertz.

To nd the value for the capacitor (Cc) in the RC network:

Cc = L/ (R x Rc)

where:

Cc is compensation capacitance in farads.

L is load inductance in henries.

R is resistance of load in ohms.

STEP 5: (Optional) Verify Suitability of Default Compensation (CC1)

If desired, the following values of the components

contained in the default RC network can be used with the formulas provided in STEP 6 below to verify the suitability of the default compensation for your uses.

Pins Jumped: 1 and 2 (UP)

Compensation Resistor: R63 (68 Kohms)

Compensation Capacitor: C16 (0.047 µF)

Parallel Capacitor: C11 (47 pF)

97-2105006_4-2-15

Rc is compensation resistance in ohms.

STEP 7: Optimizing the Compensation Values.

Once an approximate Rc and Cc have been computed, these values will need to be evaluated.

To do this, install components with the required

values in the main board at locations R82 and C25 as shown in Figure 6.4.

Remember the load you are connecting is a

part of the system and the amplier should not

be turned on without the load being connected.

After installing the components, check to ensure that jumper J5 is correctly installed (see STEP 4), then power up the amplier without signal input.

Information subject to change

25

Figure 6.4 – Custom Compensation Location

To begin testing, input a square wave with a frequency of 100 Hz to 1 kHz, or a squared pulse at a low level (typically 0.25 to 2.0 volts). A limited-rise-

time, repetitive pulse of low duty cycle is preferred.

Observe the output current through a current monitor or current probe. Look for clean transition edges. The presence of ringing or rounding on the transition edges indicates compensation problems. (See Figure 6.5.)

2105 OPERATOR’S MANUAL – SECTION 6

Figure 6.6 – Square Wave Showing a

Decrease in R is Required

Figure 6.5 – Compensation Effects on Waveform

If a change in compensation is necessary, an ad-

justment to the resistor component of the Compen-

sation circuit is probably required.

If the output current waveform is ringing, the circuit is underdamped: You have too much gain and should lower the resistance (see Figure 6.6).

If the output current waveform is rounded, the

circuit is overdamped: You have too little gain and should increase resistance (see Figure 6.7).

26

Figure 6.7 – Square Wave Showing an

Figure 6.8 – Square Wave Showing an

If the output current waveform is neither underdamped or overdamped, but the top of the squarewave is not level, then you should instead increase

the capacitor value (see Figure 6.8).

Information subject to change

Increase in R is Required

Increase in C is Required

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 6

When making adjustments:

Resistor: Increase or decrease resistance values

in increments of +/- 10%.

Capacitor: Incrementally increase capacitor values by a factor of 2 or 3.

After nal adjustments have been made to the circuit, the nal waveform for your planned application should be tested to conrm the amplier’s compensation setting.

6.2 Remote Status and Control using

the SIM Interlock I/O Connector

The procedures outlined in this section assume competence on the part of the reader in terms of

amplier systems, electronic components, and good electronic safety and working practices.

AE Techron 2105 ampliers come with a SIM-BNC

input module that also contains a female, 25-pin

D-Sub connector. This connector can be used to provide remote control and monitoring of the amplier.

The information provided here will instruct you in

the wiring of several control and status applications including:

NOTE:

• If possible, use 1% metal film resistors. AE Techron discourages installation of potentiome-

ters in the resistor location of the compensation circuit because this can decrease stability and may increase inductance.

• The parallel capacitor in the RC network serves to increase stability but can be removed, if it is

not required for system stability. If the parallel

capacitor is used, it will usually decrease the value of resistance needed.

• In multiple amplifier systems, expect to decrease

the value of R63 in series systems by 1/2.

• Remote Run / Standby

• Over-temperature status

• Run status

• Overload status

• Overvoltage status

• Reset after Over-temperature or Overload error

• Current monitor

Figure 6.9 maps the pins used for these applications.

For a detailed chart of all DB-25 pinouts, see ”Appendix 1.”

.

Figure 6.9 – Remote Status and Control Pinouts

97-2105006_4-2-15

Information subject to change

27

2105 OPERATOR’S MANUAL – SECTION 6

6.2.1 Remote Amplier Status and Reset

The SIM Interlock I/O Connector can be used to

create a circuit to monitor remotely one or more

amplier conditions, including Run status, Overtemperature, Overload and Overvoltage. The cir-

cuit can also be constructed to allow remote reset

of the amplier when it is forced to Standby due to

Over-temperature or Overload conditions.

Use a male, 25-pin D-Sub connector and highquality wire to build the circuit. Figure 6.10 sche- matic details the circuit and components required

for all status and reset functions.

Remote Signal of Over Temperature Condition

Purpose: LED, when lit, signals Over Temperature

condition.

Method: Use a 6mA series resistor of 4.02 Kohm for LED or OPTO, tie OverTemp Out (PIN 11) to

-24V source (PIN 13).

Signal Type: DC

Level when Asserted: –24V

Level when Deasserted: 0V Note: When amp is normal, this pin is pulled to

–24V through a 47.5K-ohm resistor; when amp

is in Overtemp state, transistor Q37 turns on and sources chassis ground as an output. Do not exceed 20 milliamps. An Overtemp condition will force the amp to

Standby. The amplier will automatically move to Run when temperature cools to operating levels.

Remote Signal of Run Condition

Purpose: LED, when lit, signals Run state. Method: Use a 6mA series resistor of 4.02K-ohm

for LED or OPTO, tie Run (PIN 12) to –24V source (PIN 13). Signal Type: DC

Level when Asserted: –24V Level when Deasserted: 0V

Remote Signal of Overload Condition

Purpose: Method: Use a 6mA series resistor of 4.02K-ohm

for LED or OPTO, tie OverLoad Out (PIN 23) to –24V source (PIN 13). Signal Type: DC Level when Asserted: –24V

LED, when lit, signals Overload condition.

Figure 6.10 – Remote Status and Reset Schematic

28

Information subject to change

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 6

Level when Deasserted: 0V Note: When amp is normal, this pin is pulled to

–24V through a 47.5K-ohm resistor; when amp

is in Overload state, transistor Q36 turns on and sources chassis ground as an output. Do not exceed 20 milliamps.

An Overload condition will not place the amplier in Standby when operating with the factory default settings. In order to clear the fault condition, reduce the input levels until the Fault LED turns off. However, if the Standby Mode on Overload

option is set, an Overload condition will force amp

to Standby. To return the amplier to Run mode, reduce the input signal level, then trigger a Reset command using the front-panel Reset button or a

remote amplier Reset command.

Remote Signal of OverVoltage Condition

Purpose: Method: Use a 6mA series resistor of 4.02K-ohm

for LED or OPTO, tie OverVoltage Out (PIN 24) to –24V source (PIN 13). Signal Type: DC Level when Asserted: –24V

LED, when lit, signals Overvoltage condition.

Level when Deasserted: 0V Note: When amp is normal, this pin is pulled to

–24V through a 47.5K-ohm resistor; when amp is in Overvoltage state, transistor Q29 turns on and sources chassis ground as an output. Do not

exceed 20 milliamps.

Reset from Standby

Purpose: Switch, when thrown, returns amp to Run condition after Over-temperature or Overload conditions.

Method: Use a dry-contact switch, voltage regulator (MC7915), and two 0.01/50V capacitors; wire the circuit as shown (above). Assert 15V for at

least 100 ms to clear the error condition.

Signal Type: DC

Level when Asserted: –15V Level when Deasserted: 0V Note: Tie to PIN 13 (–24V dc) and create a –15V

dc source; <2mA required for reset. Connect the –15V dc source to PIN 25 (Reset) through a 1K

buffer resistor to reset.

6.2.2 Remote Run/Standby Status Monitor

Using the SIM-BNC Interlock connector located on the back panel of the amplier, you can remotely monitor the Run/Standby status of the amplier.

Remote Run/Standby Status

Purpose: Use a voltage meter to monitor the status of the amplier to determine if the amplier is in a “Run” or “Standby” state. Method: Connect a voltage meter to monitor the circuit voltage. Connect across PIN 4 (Interlock) and PIN 10 (Sampled Common). When the voltage meter reads greater than 10V, the amplier is in the Run state; when the meter reads less than 10V, the amplier is in the Standby

state. See Figure 6.11.

Signal Type: DC

Level when Asserted: >10 V Level when Deasserted: <10 V

IMPORTANT: This circuit has a 100K pull-up resistor. Make sure the monitor function has sufcient impedance to avoid accidentally inuencing status

97-2105006_4-2-15

Figure 6.11 – Remote Run/Standby Monitor

Information subject to change

29

6.2.3 Remote Enable/Standby

Using the SIM-BNC Interlock connector located on the back panel of the amplier, you can remotely Enable the amplier and/or place the unit in

Standby mode. See Figure 6.12.

Remote Enable/Standby

Purpose: Use a switch or optocoupler to remotely disable the amplier and place it in Standby mode. Also, return the amplier from Standby mode to

the Run condition.

Method: Short PIN 4 of amplier to Digital Ground (PIN 17) using a dry contact switch or optocoupler.

In multi-amp applications, a switch can be used for Parallel systems, but an optocoupler must be used

for Series systems. Multiple ampliers (sharing the same Sampled Common power connections) can

be simultaneously forced to Standby by daisy-

chaining Interlock (PIN 4) across amps. When Interlock (PIN 4) is shorted to Digital Ground (PIN 17), the amplier is placed in Standby mode. When switch is open, the amplier is released to

the Run condition.

Signal Type: DC

Level when Asserted: 0 to 8 V Level when Deasserted: 10 to 15 V

2105 OPERATOR’S MANUAL – SECTION 6

Figure 6.12 – Remote Enable/Standby

IMPORTANT: The amplier must be congured for Ready mode at startup (factory default) or the Run button must be pressed at the amplier front panel at startup. The Remote Enable/Standby circuit will not function if the Startup to Standby Latch has been activated on the amplier.

6.2.4 Remote Monitoring of Current

Using the SIM-BNC Interlock connector located on the back panel of the amplier, you can remotely monitor both voltage and current output.

Use a male, 25-pin D-Sub connector and highquality wire to build the desired circuits.

Remote Monitoring of Current Output

Purpose: Use a voltage meter to monitor output

current.

Method: Connect a voltage meter to monitor the output current being produced by the amplier. Connect across PIN 6 (I MON+) and PIN 10 (Sampled Common). See Figure 6.13. Signal Type: DC Level when Asserted: 2105: 5A/V; 2110/2120: 20A/V

Level when Deasserted: 0V

Figure 6.13 – Remote Current Monitoring

30

Information subject to change

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 6

Remote Monitoring of Current Output - Alternate Method

Purpose: Use a voltage meter to monitor output

current when output is not balanced.

Method: Connect a voltage meter to monitor the output current being produced by the amplier. Connect across PIN 6 (IMON+) and PIN 19 (IMON-). See Figure 6.14.

Signal Type: AC

Level when Asserted: 2105: 2.5A/V; 2110/2120: 10A/V

Level when Deasserted: 0V

CAUTION: To avoid ground loops, isolation from ground must be provided. Use of a differential

probe is recommended.

Figure 6.14 – Remote Current Monitoring,

Alternate Method

Blanking Circuit Activation

Purpose: Activate the blanking circuit that shuts down the amplier output stage in less than 10 µs. Method: Build a switchable circuit using an external, isolated 5V power supply that can apply a +5V signal to PIN 9. Connect across PIN 9 (Blanking) and PIN 10 (Sampled Common). See Figure 6.15. Signal Type: DC

Level when Asserted: 3-5 Vdc Level when Deasserted: 0-1 Vdc

6.3 Multi-amplier Systems

The 2105 amplier may be used with other samemodel ampliers to increase voltage or current. Because the internal circuitry of a 2105 amplier is not connected to chassis ground, the amplier

is well suited for use in series or parallel with other

ampliers of the same model.

Figure 6.15 – Blanking Activation

contact AE Techron Application Support for infor- mation on these more complex multi-amp systems.

For routine, controlled-voltage applications , Series or Parallel amplier systems can be congured using the following accessories available from

AE Techron:

Up to three 2105 ampliers may be congured in series, and up to four may be congured in parallel. Congurations with more ampliers may be possible, depending on the application. Please

97-2105006_4-2-15

SIM-OPTOC – The SIM-BNC-OPTOC Specialized

Input Module allows multiple 2100-Series ampli-

ers to be congured as a series output system to increase the available output voltage to the load.

Information subject to change

31

2105 OPERATOR’S MANUAL – SECTION 6

The SIM-BNC-OPTOC kit also includes a BNC connector safety cover.

The SIM-BNC-OPTOC module is required for all Series congurations and should be used in conjunction with the DB9M CABLE (see below).

DB9M CABLE – The DB9M (OPTOC) CABLE is a high-voltage Interlock cable that provides superior insulation for multi-amp series systems running high-voltage applications.

The DB9M CABLE is required for all Series congurations and should be used in conjunction with the SIM-BNC-OPTOC module (see above)

BAL RES KIT – Three types available: 2105 BAL RES KIT, 2110 BAL RES KIT and 2120 BAL RES KIT. Ballast resistors are required for all Parallel congurations. The ballast resistor kits include one ballast resistor (two in the 2120 kit) with connection terminals and mounting hardware. The 2105

BAL RES KIT also contains the shunt required to defeat the amplier’s external level control.

PARALLEL WIRING KITS – Six types available: 2105 2-AMP, 2110/2120 2-AMP, 2105 3-AMP, 2110/2120 3-AMP, 2105 4-AMP, and 2110/2120 4-AMP. Parallel wiring kits include the DB-25

Interlock cable for system communication, BNC

T-connectors and BNC patch cables for wiring parallel inputs through the BNC input connectors, and the output wiring for connecting system ampliers to the load. The kits also include the wire(s) needed for wiring the parallel inputs through the Removable Barrier Block (WECO) connectors and the input terminators required during system setup. Parallel wiring kits are recommended for all Parallel congurations.

To download the AE Techron Multi-Amp Conguration Guide or for additional information, visit the

AE Techron website at www.aetechron.com.

6.3.1 Accessory Recommendations by System Type

Series Systems

2105, Two in Series:

(2) SIM-BNC-OPTOC input cards, (1) DB9M OPTOC cable

2105, Three in Series:

(3) SIM-BNC-OPTOC input cards, (2) DB9M OPTOC cables

6.3.2 Multi-Amp System Output Capabilities (see following pages)

Note: Performance levels typical up to 20 kHz fre-

Parallel Systems

2105 Two in Parallel:

(2) 2105 BAL RES kits, (1) 21050 2-AMP Parallel Wiring kit

2105 Three in Parallel:

(3) 2105 BAL RES kits, (1) 2105 3-AMP Parallel Wiring kit

2105 Four in Parallel:

(4) 2105 BAL RES kits, (1) 2105 4-AMP Parallel Wiring kit

quency levels. Above 20 kHz, slew rate may affect performance, reducing maximum voltage, current

and power output.

32

*Indicates no testing performed.

Information subject to change

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 6

Two 2105s in Series – High-Voltage Mode

PEAK OUTPUT RMS OUTPUT

40 mSec Pulse,

20% Duty Cycle

Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts

32 316 9.8 316 9.8 316 9.8 223 6.9 223 6.9 1539

16 308 19 272 16.3 272 16.3 192 11.5 192 11.5 2208

8 248 31 216 25.7 122 14.5 153 18.2 86 10.3 886

4 196 49

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

Two 2105s in Series – Mid-Level Mode

PEAK OUTPUT RMS OUTPUT

40 mSec Pulse,

20% Duty Cycle

Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts

8 144 18 138 16.4 138 16.4 98 11.6 98 11.6 1137

4 122 30 114 26.2 114 26.2 81 18.5 81 18.5 1499

2 94 47 86 39.6 42 21 61 28 30 14.8 444

1 52 52

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

Two 2105s in Series – High-Current Mode

PEAK OUTPUT RMS OUTPUT

40 mSec Pulse,

20% Duty Cycle

Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts

2 * * 58 29 58 29 41 20.5 41 20.5 841

1.5 * * 52 34 52 34 37 24 37 24 888

1 * * 46 45 46 45 33 31.8 33 31.8 1049

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

Three 2105s in Series – High-Voltage Mode

PEAK OUTPUT RMS OUTPUT

40 mSec Pulse,

20% Duty Cycle

Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts

48 474 9.8 474 9.8 474 9.8 335 6.9 335 6.9 2312

24 462 16.3 408 16.3 408 16.3 288 11.5 288 11.5 3312

12 372 31 324 25.7 183 14.5 229 18.2 129 10.3 1322

6 294 49

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

Three 2105s in Series – Mid-Level Mode

PEAK OUTPUT RMS OUTPUT

40 mSec Pulse,

20% Duty Cycle

Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts

12 216 18 207 16.4 207 16.4 146 11.6 146 11.6 1693

6 183 30 171 26.2 171 26.2 121 18.5 121 18.5 2241

3 141 47 129 39.6 63 21 91 28 44.5 14.8 661

1.5 78 52

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

97-2105006_4-2-15

Information subject to change

33

2105 OPERATOR’S MANUAL – SECTION 6

Three 2120s in Series – High-Current Mode

PEAK OUTPUT RMS OUTPUT

40 mSec Pulse,

20% Duty Cycle

Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts

3 * * 87 29 87 29 61.5 20.5 61.5 20.5 1261

2.25 * * 78 34 78 34 55 24 55 24 1322

1.5 * * 69 45 69 45 49 31.8 49 31.8 1559

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

Two Paralleled 2105s – High-Voltage Mode

PEAK OUTPUT RMS OUTPUT

40 mSec Pulse,

20% Duty Cycle

Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts

8 158 19.6 158 19.6 158 19.6 112 13.9 11 2 13.9 1557

4 154 38 136 32.6 136 32.6 96 23 96 23 2213

2 124 62 108 51.4 61 29 76 36.3 43 20.5 882

1 98 98

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

Two Paralleled 2105s – Mid-Level Mode

PEAK OUTPUT RMS OUTPUT

40 mSec Pulse,

20% Duty Cycle

Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts

2 144 18 69 32.8 69 32.8 49 23.2 49 23.2 1136

1 122 30 57 54.4 57 54.4 40 38.5 40 38.5 1538

0.5 94 47 43 79.2 21 42 30.4 14.9 14.8 29.7 439

0.25 52 52

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

Two Paralleled 2105s – High Current Mode

PEAK OUTPUT RMS OUTPUT

40 mSec Pulse,

20% Duty Cycle

Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts

0.5 * * 29 58 29 58 20.5 41 20.5 41 841

0.375 * * 26 68 26 68 18.4 48.1 18.4 48.1 885

0.25 * * 22.7 90 22.7 90 16 63.6 16 63.6 1018

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

Three Paralleled 2105s – High-Voltage Mode

PEAK OUTPUT RMS OUTPUT

40 mSec Pulse,

20% Duty Cycle

Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts

5.34 158 29.4 158 29.4 158 29.4 112 20.8 11 2 20.8 2328

2.67 1574 57 136 48.9 136 48.9 96 34.6 96 34.6 3319

1.34 124 93 108 77.1 61 43.5 76 54.5 43 30.8 1322

0.67 98 147

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

34

Information subject to change

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 6

Three Paralleled 2105s – Mid-Level Mode

PEAK OUTPUT RMS OUTPUT

40 mSec Pulse,

20% Duty Cycle

Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts

1.34 144 54 69 49.2 69 49.2 49 34.8 49 34.8 1704

0.67 122 90 57 78.6 57 78.6 40 55.6 40 55.6 2223

0.34 94 141 43 118.8 21 63 30.4 84 14.8 44.5 659

0.167 52 156

5 Minutes,

100% Duty Cycle

Three Paralleled 2105s – High-Current Mode

PEAK OUTPUT RMS OUTPUT

40 mSec Pulse,

20% Duty Cycle

Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts

0.34 * * 29 87 29 87 20.5 61.5 20.5 61.5 1261

0.25 * * 26 102 26 102 18.4 72.1 18.4 72.1 1327

0.167 * * 22.7 135 22.7 135 16 95.5 16 95.5 1527

5 Minutes,

100% Duty Cycle

Four Paralleled 2105s – High-Voltage Mode

PEAK OUTPUT RMS OUTPUT

40 mSec Pulse,

20% Duty Cycle

Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts

4 158 39.2 158 39.2 158 39.2 112 27.7 11 2 27.7 3104

2 154 76 136 65.2 136 65.2 96 46.1 96 46.1 4425

1 124 124 108 102.8 61 58 76 72.7 43 41 1763

0.5 98 196

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

1 Hour,

100% Duty Cycle

1 Hour,

100% Duty Cycle

5 Minutes,

100% Duty Cycle

5 Minutes,

100% Duty Cycle

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

1 Hour,

100% Duty Cycle

1 Hour,

100% Duty Cycle

Four Paralleled 2105s – Mid-Level Mode

PEAK OUTPUT RMS OUTPUT

40 mSec Pulse,

20% Duty Cycle

Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts

1 144 72 69 65.6 69 65.6 49 46.4 49 46.4 2273

0.5 122 120 57 104.8 57 104.8 40.3 74.1 40.3 74.1 2986

0.25 94 188 43 158.4 21 84 30.4 112 14.8 59.4 879

0.125 52 208

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

Four Paralleled 2105s – High-Current Mode

PEAK OUTPUT RMS OUTPUT

40 mSec Pulse,

20% Duty Cycle

Ohms Volts Amps Volts Amps Volts Amps Volts Amps Volts Amps Watts

0.25 * * 29 116 29 11 6 20.5 82 20.5 82 1681

0.1875 * * 26 136 26 136 18.4 96.2 18.4 96.2 1769

0.125 * * 22.7 180 22.7 180 16 127.3 16 127.3 2036

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

5 Minutes,

100% Duty Cycle

1 Hour,

100% Duty Cycle

97-2105006_4-2-15

Information subject to change

35

2105 OPERATOR’S MANUAL – SECTION 7

7 Amplier Signal Flow

7.1 Input Signals

The input signal is routed from the SIM (Specialized

Input Module) on the back panel to the Main board.

From there, the signal is amplied through low-noise

operational amplier gain stages, compensation

networks, and current limiting/ODEP and then nal

gain stage to the Output board. At the Output board,

the signal is sent through pre-drivers, output stage

drivers, then to the Output stage whose topology is

a full-complimentary, full-bridge, AB+B mode transis-

tor design. Amplier control and status is handled by

logic circuits tied to the Display/Control board on the

front panel. Protection is provided by current limiting

circuits and special junction temperature simulation

circuits using thermal feedback from the main heat

sinks on the Output board.

7.2 AC Mains Power

Power to the amplier is connected through a 20-

amp IEC-type inlet connector with an integral EMI

lter network on the back panel. AC mains power is

rst routed through the front panel switch/breaker,

then to the Power Supply board. From there, the AC

mains are distributed to the main power transform-

ers, and then from the transformers back through the

Power Supply board to the Main board.

The Power Supply board allows for easy congura-

tion of primary and secondary voltages. The Power

Supply board also performs the “bi-level” function.

This allows the power supply rails to the Output sec-

tion to increase or decrease depending on demand

and keeps the voltage dropped across the outputs to

a minimum, thereby decreasing heat dissipation.

Figure 7.1 – Board-Level Functional Block Diagram

36

Information subject to change

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 8

8 Maintenance

Simple maintenance can be performed by the user

to help keep the equipment operational. The following routine maintenance is designed to prevent

problems before they occur. See Section 8, Trou-

bleshooting, for recommendations for restoring the equipment to operation after an error condition has

occurred.

Preventative maintenance is recommended after

the rst 250 hours of operation, and every three months or 250 hours thereafter. If the equipment

environment is dirty or dusty, preventative mainte-

nance should be performed more frequently.

CAUTION

Before you begin, make sure your amplier is disconnected from the power

source, with power switch in the OFF position and the level control turned

completely down (counter-clockwise).

8.1 Clean Amplier Filter and Grills

8.1.1 Tools Required

The recommended equipment and supplies needed to perform the functions required for this

task are described below.

• Vacuum cleaner

• Damp cloth (use water only or a mild soap

diluted in water)

To ensure adequate cooling and maximum efciency of the internal cooling fans, the amplier’s front and rear grills should be cleaned periodically. To clean the amplier grills and lter, complete the following steps:

1. Turn completely down (counter-clockwise) all level controls and turn the amplier OFF. Disconnect the amplier from its power source.

2. Using a vacuum cleaner, vacuum the front ventilation grill, including the lter behind the grill, and the back ventilation exit grill.

3. Using a damp cloth, clean the front and rear ventilation grills. Dry with a clean cloth or allow

to air dry. IMPORTANT: Grills should be com- pletely dry before plugging in or restarting

amplier.

97-2105006_4-2-15

Information subject to change

37

2105 OPERATOR’S MANUAL – SECTION 9

9 Troubleshooting

9.1 Introduction & Precautions

This section provides a set of procedures for

identifying and correcting problems with the 2105 amplier. Rather than providing an exhaustive and detailed list of troubleshooting specications, this

section aims to provide a set of shortcuts intended

to get an inoperative amplier back in service as quickly as possible.

The procedures outlined in this section are direct-

ed toward an experienced electronic technician; it assumes that the technician has knowledge of

typical electronic repair and test procedures.

Please be aware that the 2105 will undergo frequent engineering updates. As a result, modules and electronic assemblies may not be interchange-

able between units. Particularly, the Main board

undergoes periodic engineering modications that may make interchangeability between units impos-

sible.

DANGER

Uninsulated terminals with AC Mains

potential are exposed when the panel is removed. Do not proceed until AC Mains have been disconnected.

9.2 Visual Inspection

Before attempting to troubleshoot the amplier while it is operating, please take time to complete

a visual inspection of the internal components of

the amplier.

1. To perform a Visual Inspection, rst turn the Breaker/Switch to the Off (O) position.

2. Disconnect the AC mains plug from the amplier.

3. Wait three to ve minutes for the Power Supply capacitors to discharge. You can verify the capacitor discharge by connecting a voltmeter across +Vcc and –Vcc test points on the main board (see Figure 9.1). Verify a reading of less than 50 volts before proceeding.

4. Inspect the amplier’s internal components. Check the following:

5. Inspect modules for charring, breaks, deformation or other signs of physical damage.

6. Look for any foreign objects lodged inside the unit.

7. Inspect the entire lengths of wires and ribbon

cables for breaks or other physical damage.

8. If there is any physical damage to the amplier, please return it to AE Techron for repair.

38

Figure 9.1 – +Vcc and –Vcc Point Locations

Information subject to change

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 9

9.3 No Signal

Missing Output signal may be caused by one of the following:

1. Master/Slave Jumpers are set to the Slave (down) position. The amplier should only be congured for Slave mode if it is in a multi-amplier system; otherwise it should be set for Master

mode. See the “Advanced Conguration” section in this manual for more information.

2. Signal is not connected to any inputs on the SIM card. See the “Amplier Setup” section in this manual for more information.

9.4 No LEDs Illuminated or No Fans

If none of the LEDs on the Display Panel are illuminated and/or the fans are inoperative, check the following:

1. The AC mains are not connected or not on

(see the “Amplier Setup” section for more information).

2. Front Panel Breaker/Switch has been tripped. Reset by turning the unit Off (O) and then On.

3. Fuse F1 is open.

To Inspect Fuse F1 follow these steps:

1. Turn Off (O) the amplier and disconnect the AC mains.

2. Remove Access Panel (see “Advanced Con-

guration”).

3. Locate Fuse F1 (see Figure 9.2). Remove fuse and inspect. Replace, if necessary, with same

type fuse (T1.6A L 250V).

9.5 OverVoltage LED Lit

Figure 9.2 – Fuse F1 Location

9.6 Standby LED Remains Illuminated

The Standby indicator may remain illuminated under three conditions:

1. If the output wells or power transformer have

overheated. If overheating is the problem, see the following topic (“Amplier Overheats”).

2. If both the Standby and Ready LEDs remain illuminated and the Interlock I/O Cable is being used, the amplier is being held in Remote Standby mode by another device (see Figure

9.3). For more information on 2105 Remote

Operation, see the “Applications” section in this manual.

3. If the connection to the Interlock – I/O Connec-

tor or other input/output connection isn’t fully secure. Check all wiring and connections.

The amplier will protect itself from AC mains voltage that is 10% above the voltage indicated on the back panel. If the AC mains voltage is more than 10% above the operating voltage, reduce the AC mains voltage to the proper level. When the line voltage condition is corrected, the amplier will automatically reset. If the amplier does not automatically reset, the amplier’s three internal

transformers may need to be rewired. Please see the Factory Service information at the end of this section.

97-2105006_4-2-15

Figure 9.3 – Interlock I/O Connector

Information subject to change

39

2105 OPERATOR’S MANUAL – SECTION 9

9.7 Amplier Overheats (Over Temp Fault Condition)

There are two possible reasons why the 2105 am-

plier is overheating:

1. Excessive Power Requirements

2. Inadequate Airow

9.7.1 Excessive Power Requirements

An amplier will overheat if the required power exceeds the amplier’s capabilities. High duty cycles

and low-impedance loads are especially prone to

cause overheating. To see if excess power requirements are causing overheating, check the following:

1. The application’s power requirements fall

within the specications of the amplier. See

the “Specications” section.

2. Faulty output connections and load.

3. Undesired DC offset at the Output and Input

signal.

the input signal from the amplier. Allow the fans to run for ve minutes, and then push the Reset button to reset the amplier.

9.8 Fault LED is Illuminated

The 2105 contains protection circuitry that disables the amplier if an output stage is behaving abnormally. This usually indicates an output transistor has shorted.

To clear the Fault condition, follow these steps:

1. Turn off the signal source.

2. Turn off the AC mains.

3. Turn AC mains power back on. If the Fault LED

doesn’t illuminate again, turn the signal source

on.

4. If the Fault LED is still illuminated and the Fault

condition doesn’t clear, return the amplier for

Factory Service. Please see the Factory Service information at the end of this section.

If the amplier chronically overheats with suitable power/load conditions, then the amplier may not be receiving adequate airow. To check for adequate airow, proceed with the following step:

9.7.2 Check for Inadequate Airow

1. Check air lters. Over time they can become

dirty and worn out. It is a good idea to clean the air lters periodically with a mild detergent

and water.

2. Visually inspect fans to assure correct opera-

tion while amplier is On (I).

Any inoperative, visibly slow, or reverse-spinning

fan should be replaced. Please see Section 8.9 for Factory Service information.

An OverTemp condition places the amplier in

Standby mode. If the OverTemp pulse is ex-

tremely short, as in the case of defective wiring or

switches, the OverTemp pulse may be too brief to observe.

9.7.3 Resetting After OverTemp

To reset the amplier after an OverTemp has occurred, make sure fans are running, then remove

CAUTION

Shut off the signal source before reset-

ting the amplier. Try resetting the Fault

condition only once. If the Fault condi-

tion does not clear after one reset, STOP. Contact AE Techron Support for further

assistance. repeated resetting can dam-

age the amplier.

9.9 Factory Service

If the troubleshooting procedures are unsuccessful, the amplier may need to be returned for

Factory Service. All units under warranty will be

serviced free of charge (customer is responsible for one-way shipping charges as well as any custom fees, duties, and/or taxes). Please review the Warranty at the beginning of this manual for more

information.

All service units must be given Return Authorization by AE Techron, Inc. before being returned. Return Authorizations can be requested on our website or by contacting our Customer Service Department.

40

Information subject to change

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 9

Please take extra care when packaging your amplier for repair. It should be returned in its original packaging or a suitable alternative. Replacement packaging materials can be purchased for a nomi-

nal fee.

Please send all service units to the following address and be sure to include your Return Authori-

zation Number on the box.

AE Techron, Inc.

Attn: Service Department / RMA#

2507 Warren Street

Elkhart, IN 46516

97-2105006_4-2-15

Information subject to change

41

2105 OPERATOR’S MANUAL – SECTION 10

10 Specications

2105 Pulsed Output - Current Mode

PULSE DURATION / OFF TIME (mS)

DC* 500 / 500 100 / 100 10 / 20 170 / 1000 25 / 1000 4 / 100

Output (±A Peak) 16 8.75 9 11.7 25 49 55

*DC 1Ω

10.1 Performance

Specication typical at 25°C ambient. Unless otherwise noted; testing was done in Current mode with a load = 500 µH +100 mΩ.

Peak Current Limit 55 A

Gain (adjustable) Voltage Mode: 20 to 0.2 V/V

Current Mode: 5 to 0.2 A/V

Gain Linearity DC: 0.02% (over input signal, from 0.2V to 5V) AC: 0.05%

Output Offset (adjustable to zero) Voltage Mode: Less than ±400 µV Current Mode: ±5 mA

Input Characteristics Three-Terminal Barrier Block Connector:

Balanced with ground; 20 kΩ differential BNC Connector: Unbalanced; 10 kΩ single ended Max Input Voltage: ± 10 V balanced or unbalanced Common Mode Rejection: –58 dB with 5 V input

Output Impedance Current Mode (effective): 2000 Ω

Voltage Mode (typical): 28 mOhm in series with 1 µH

Load Current Mode: 500 µH + 100 mΩ Adaptable Range: 5 µH to 2.5 H, 0.01 Ω to 20 Ω

Current Mode Response –3 dB at 10 kHz (compensation dependent)

Current Settling Time Ramp 0 A to ±50 A or ±50 to 0 A:

20 µs to within 1.0 A or 1% 35 µs to within 200 mA, 0.2%

Total Harmonic Distortion Current Mode: Less than 0.1% Load: 500 µH + 100 mΩ

Noise Floor (when Blanking circuit is enabled) 5 µA or less

DC Drift Self Heating Drift, 0 to ±60 A:

5 mA/10 minutes maximum

Noise Output 10 Hz to 1 kHz: 0.2 mA 1 kHz to 60 kHz: 0.05 mA

Ripple Noise Output None

Slew Rate, Voltage Mode: 23 V/µs

Remote Control and Monitoring Current Monitor: ± 1 V / 5 A ± 1%

(back-panel D connector) Reporting: System Fault, Over Temp, Over Voltage, Over

Control: Force to Standby, Remove from Standby,

42

Load

Reset after a Fault

Information subject to change

97-2105006_4-2-15

2105 OPERATOR’S MANUAL – SECTION 10

Amplier Protection Over Load/Distortion (IOC): Shutdown or clipped

output

Current vs Time (ODEP): Clipped output Each heat sink temperature: Shutdown 105°C

Overvoltage Shutdown: 132 VAC / 253 VAC

Undervoltage Shutdown: 108 VAC / 207 VAC

Status Indicators (front panel) LEDs indicate a status of Run, Ready or Standby,

and Fault, Over Temp, Over Voltage, and Over Load

conditions

Controls (front panel) Soft Touch Switches: Run (Enable), Stop and Re-

set functions

Gain Control, when-enabled: Voltage gain adjustable from 20 to 0; Current gain adjustable from 5 to 0

On/Off and Breaker: Two-position power switch also

functions as a breaker; turn off and then on to reset

Connectors (back panel) Power Connection: 25-amp IEC (with retention

latch) Signal Output: Three terminal barrier strip (OUTPUT/COM/CHASSIS GROUND); resistor installed between COM and CHASSIS GROUND terminals is a 2.7-ohm, 2W, 5%, metal-oxide resistor Signal Input: User-selectable unbalanced BNC or

balanced Barrier Strip

Interlock I/O Connection: 25-pin D connector pro-

vides for remote monitoring and control functions

Power Requirements Single phase, 120 VAC, 60 Hz, 20 Amp service;

(220-240 VAC, 50-60 Hz, 10 Amp service model available)

Thermal Requirements Operating Temperature: +10°C to +30°C (+50°F to

+86°F).

Storage: –30°C to +85°C (–22°F to +185°F) Humidity: 70% or less, non-condensing

Physical Characteristics Dimensions: 19” L x 3.5” H x 22.75” D (48.3 cm L x

8.9 cm H x 57.8 cm D)

Cooling: Forced air cooling from front to back

through removable lters.

Airow: 180CFM

Weight: 41 lbs (18.6 kg) Shipping Weight: 51 lbs (23.2 kg)

97-2105006_4-2-15

Information subject to change

43

A1

Pin # Function Description Signal

Type

Level when

Asserted

Level when

Deasserted

Notes Applications

1

Amplier

Output

Used for driving slave ampliers; monitoring amplier output voltage

AC or DCCan be greater

than ±200V

peak

0V Used for driving slave ampliers in

multi-amp systems. Wired to ampli-

er output. Do not connect to any impedance of less than 10K ohm.

Used in multi-amplier systems.

2

Sampled Common

Load connected

here for Current sense

AC or DCUp to ±2V

peak relative to Common

0V Used for driving slave ampliers in

multi-amp systems, controlled volt-

age or controlled current mode.

Driving Slave Ampliers: Amplier External Reference, 2V peak maximum from PIN 14 (Common).

3

+1 IN Differential Slave

input

AC or DCCan be greater

than ±200V

peak

0V Only used in multiple amplier con-

gurations - Series mode.

Can accept output of PIN 1 (Amplier Output) OR PIN 2 (Sampled Common) from Master device when in Slave

mode.

4

Interlock Amplier Interlock

input

DC 0V to 8V 10V to 15V When “low”, forces to Standby;

when allowed to oat, allows Run (if amplier is “Ready”). IMPORTANT: ampliers must be congured for Run mode at startup (factory default)

or the Run button must be pressed

at the amplier front panel at startup.

Remote to Standby: Short PIN 4 of amplier to Digital Ground (PIN 17) using dry contact switch or optocoupler. When closed, places amplier in Standby.

Multi-amplier Systems, Simultaneous Enable or Disable of ampliers: Daisy-chain Interlock (PIN4)

across amps (if sharing the same Sampled Common power connections). Optocoupler must be used for multi-

amps in series.

5

Amp Ready Ready output of

amplier

DC 0V –14V Normally reserved for OPTOC

use; not recommended for normal customer use. Line has series resistor and unloaded will go from 0V (not ready) to -15V (ready), with an OPTOC BNC card the signal will go from 0V (not ready) to -1.2Vdc (ready)

Not recommended for normal customer use.

6

I MON + Differential Current

Monitor +

AC or DC2105: 5A/V

2110/2120:

20A/V

Output current produced per voltage

detect.

Current Monitoring: Connect a voltage meter to monitor the output current being produced by the amplier.

For unbalanced, for each 1V detected, current output is

5A (2105) or 20A (2110/2120).

7

None No connection Not currently used.

8

None No connection Not currently used.

9

Blanking

input

Blanking control DC 0 - 1Vdc

allows normal operation

3.5 - 5Vdc output is muted

Used in ampliers with blanking feature for blanking control.

Blanking Control: Use an external isolated 5V power supply to mute the output of the amplier.

10

Sampled Common

Amp Analog Ground; Blanking Ground

Amplier ground. Can be used as Blanking return or as a reference of the

amplier for status reporting applications. See OverTemp (PIN 11), Run (PIN 12), Overload (PIN 23), and OverVoltage (PIN 24).

Appendix A: SIM - Interlock I/O Connector Pinouts and Functions

A2

Pin # Function Description Signal

Type

Level when

Asserted

Level when

Deasserted

Notes Applications

11

OverTemp Out

Over-temperature output

DC –24V 0V When amp is normal, this pin is

pulled to –24V through a 47.5K-ohm resistor; when amp is in OverTemp state, this pin is grounded. Do not

exceed 7 milliamps.

Remote Signal of Over-Temperature Condition: LED, when lit, signals Over Temperature condition. Use a 6 mA series resistor of 4.7K-ohm for LED or OPTO, tie to –24V source (PIN 13).

12

Run Amplier Run

output

DC –24V 0V When amp is in Standby mode, this

pin is pulled to –24V; when amp is in Run mode, this pin is grounded, energizing Mains Relays and allowing drive for an external LED. DO NOT exceed 7mA; DO NOT ground this pin as this will enable

Main Power Relays.

Remote Signal of Run Condition: LED, when lit, signals Run state. Use a 6mA series resistor of 4.7K-ohm for LED or OPTO, tie to –24V source (PIN 13).

13

–24V –24V Power

Output

DC –24V dc, 30 mA max Internally tied for use in status reporting applications.

See OverTemp (PIN 11), Run (PIN 12), Overload (PIN

23), and OverVoltage (PIN 24).

14

Common Ground before

Sense Resistors

Current monitor reference. Voltage

between Common and Sampled

Common is voltage on the Current

Sense resistor.

Possibly series ampliers will not need current reporting on the High side amp, since its current will be same as

Master.

15

–1 IN Differential Slave

Input

AC or DCUp to 200V

peak

0V Only used in multiple amplier con-

gurations, Series mode.

Can accept output of PIN 1 (Amplier Output) OR PIN 2 (Sampled Common) from Master device when in Slave

mode.

16

+24V +24V Power

Output

DC +24V dc, 30 mA max. Used in status reporting applications. See OverTemp

(PIN 11), Run (PIN 12), Overload (PIN 23), and OverVoltage (PIN 24).

17

Digital Ground

Digital circuitry ground - Interlock

Common

DC 0V 0V Used with PIN 25 (Reset) for Remote Reset from

Standby or Stop after Error. Used with PIN 4 (Interlock)

for simultaneous remote to Standby of all amps in a

multi-amplier system.

18

OEM App Input Monitor

(OEM only)

Used to monitor the input signal from an OEM DAC card; this is the actual input signal.

OEM modication only; normally no connection.

19

I MON – (alt.: OEM App)

Differential Current Monitor – ; (- Input Monitor, OEM only)

AC or DC2105: 5A/V

2110/2120:

20A/V

Inverted I MON+ (PIN 6). Output current produced per voltage detect.

Current Monitoring: Connect a voltage meter to monitor the output current being produced by the amplier. For each 1V detected, current output is 5A (2105) or 20A (2110/2120).

20

I SUM1– Multiple Amplier

Summing, Amplier

1

DC Planned for use in multiple amplier

congurations - paralleled and running Controlled Current Mode

Currently not used.

21

I SUM2– Multiple Amplier

Summing, Amplier

2

DC Planned for use in multiple amplier

congurations - paralleled and running Controlled Current Mode

Currently not used.

A3

Pin # Function Description Signal

Type

Level when

Asserted

Level when

Deasserted

Notes Applications

22

I SUM3– Multiple Amplier

Summing, Amplier

3

DC Planned for use in multiple amplier

congurations - paralleled and running Controlled Current Mode

Currently not used.

23

OverLoad

Out

Overload output

(amplier output is clipping).

DC –24V 0V When amp is normal, this pin is

pulled to –24V through a 47.5K-ohm resistor; when amp is in Overload state, this pin is grounded. Do not

exceed 6 milliamps.

Remote Signal of Overload Condition: LED, when lit, signals Overload condition. Use a 6mA series resistor of 4.7K-ohm for LED or OPTO, tie to –24V source (PIN

13).

24

OverVoltage

Out

Overvoltage output (High AC line voltage).

DC –24V 0V When amp is normal, this pin is

pulled to –24V through a 47.5K-ohm resistor; when amp is in Overvoltage state, this pin is grounded. Do not

exceed 6 milliamps.

Remote Signal of Overvoltage Condition: LED, when lit, signals Overvoltage condition. Use a 6mA series resistor of 4.7K-ohm for LED or OPTO, tie to –24V source (PIN 13).

25

Reset Reset DC –15V 0V Tie to PIN 13 (–24V dc) and create a

–15V dc source; <2mA required for reset. Connect the –15V dc source to PIN 25 (Reset) through a 1K

buffer resistor to reset.

Reset from Standby: Use a dry contact switch and voltage regulator to return amp to Ready/Run condition after Over-temperature or Overload conditions. Assert –15V

for at least 100 ms to clear error condition.

Gray shaded areas indicate pin not used / feature not implemented. Blue shaded areas indicate used only in multi-amplier systems.