AE Techron 2120 User manual

2110/2120/7794MRL

Operator’s Manual

Gradient Ampliers

574.295.9495 | www.aetechron.com

2507 Warren Street, Elkhart, IN 46516

Three-Year, No-Fault Warranty

SUMMARY OF WARRANTY

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

warrants to you, the ORIGINAL COMMERCIAL PUR-

CHASER and ANY SUBSEQUENT OWNER of each

NEW AE TECHRON INC. product, for a period

of three (3) years from the date of purchase, by

the original purchaser (warranty period) that the

product is free of defects in materials and work-

manship and will meet or exceed all advertised

specications for such a product. We further war-

rant the new AE Techron product regardless of

the reason for failure, except as excluded in the

Warranty.

ITEMS EXCLUDED FROM WARRANTY

This AE Techron Warranty is in eect only for failure

of a new AE Techron product which occurred within

the Warranty Period. It does not cover any product

which has been damaged because of any intentional

misuse, or loss which is covered under any of your

insurance contracts. This warranty does not extend

to any product on which the serial number has been

defaced, altered, or removed. It does not cover dam-

age 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 unauthorized modications, accessories, parts, or

service.

WHAT WE WILL DO

We will remedy any defect, regardless of the reason

for failure (except as excluded), by repair or replace-

ment, at our sole discretion. 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 or one of our authorized service

centers of your need for warranty service, you will

receive 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 and return the product to you within three

weeks of the date of receipt of the defective prod-

uct, or will make available to you a product of equal

or better performance on temporary loan until your

product can be repaired or replaced and returned to

you. 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 conse-

quential 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 prod-

ucts 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.

This statement of warranty supersedes any others

contained in this manual for AE Techron products.

AE TECHRON INC.

Customer Service Department

2507 Warren St. Elkhart, IN, 46516, U.S.A.

(574) 295-9495

www.aetechron.c

DECLARATION OF CONFORMITY

Technical Construction File Route

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

2507 Warren Street 574-295-9495

Elkhart, IN 46516 lshank@aetechron.com

This Declaration of Conformity is issued under the sole responsibility

of AE Techron, Inc., and belongs to the following product:

Equipment Type: Industrial Power Amplifiers

Model Name: 2110

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 2004/108/EC (until 19

th

April, 2016) and Directive

2014/30/EU (from 20

th

April, 2016), and the Low Voltage Directive 2006/95/EC (until 19

th

April, 2016) and Directive 2014/35/EU (from 20

th

April, 2016).

Signed:

Larry Shank Place of Issue: Elkhart, IN, USA

President Date of Issue: March 18, 2016

CE Affixing Date: March 4, 2011

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]

This Declaration of Conformity is issued under the sole responsibility

of AE Techron, Inc., and belongs to the following product:

Equipment Type: Industrial Power Amplifiers

Model Name: 2120

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 2004/108/EC (until 19

th

April, 2016) and Directive

2014/30/EU (from 20

th

April, 2016), and the Low Voltage Directive 2006/95/EC (until 19

th

April, 2016) and Directive 2014/35/EU (from 20

th

April, 2016).

Signed:

Larry Shank Place of Issue: Elkhart, IN, USA

President Date of Issue: March 18, 2016

CE Affixing Date: March 4, 2011

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]

This Declaration of Conformity is issued under the sole responsibility

of AE Techron, Inc., and belongs to the following product:

Equipment Type: Industrial Power Amplifiers

Model Name: 7794MRL

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 2004/108/EC (until 19

th

April, 2016) and Directive 2014/30/EU (from 20

th

April,

2016), and the Low Voltage Directive 2006/95/EC (until 19

th

April, 2016) and Directive 2014/35/EU (from 20

th

April, 2016).

Signed:

Larry Shank Place of Issue: Elkhart, IN, USA

President Date of Issue: April 7, 2020

CE Affixing Date: March 24, 2020

Information subject to change

97-2120001_8-24-2020

2110/2120/7794MR OPERATOR’S MANUAL – SECTION A

vi

Contents

1 Introduction ....................................................................................................................................8

1.1 Features .............................................................................................................................8

2 Amplier Unpacking and Installation ..............................................................................................9

2.1 Safety First .........................................................................................................................9

2.2 Unpacking ..........................................................................................................................9

2.3 Installation ..........................................................................................................................9

3 Connections and Startup .............................................................................................................10

3.1 Other Operation Modes and Congurations ....................................................................10

3.2 Connecting the Load ........................................................................................................ 10

3.3 Connecting the Input Signal .............................................................................................11

3.4 Connecting the AC Supply ...............................................................................................12

3.5 Start-up Procedure...........................................................................................................13

4 Amplier Operation ......................................................................................................................14

4.1 Front-Panel Controls & Display........................................................................................14

4.2 Back-Panel Controls and Connectors .............................................................................. 20

5 Advanced Conguration ............................................................................................................... 22

5.1 Factory Defaults ...............................................................................................................22

5.2 Accessing the Main Board ...............................................................................................22

5.3 Conguration Settings Located on the Main Board .........................................................22

5.4 Adjusting the Bi-Level Power Supply Switch ...................................................................25

6 Applications ..................................................................................................................................26

6.1 Controlled Current Operation ........................................................................................... 26

6.2 Remote Status and Control using the SIM Interlock I/O Connector.................................30

6.3 Multi-amplier Systems ....................................................................................................34

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

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

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

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

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

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

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

8.5 OverVoltage Warning Message .......................................................................................40

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

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

8.8 Fault LED is Illuminated ...................................................................................................42

8.9 Factory Service ................................................................................................................42

9 Specications ...............................................................................................................................43

List of Figures

Figure 1.1 – 2110 Front Panel .......................................................................................................8

Figure 3.1 – Closeup of the Output Terminal Resistor .................................................................11

Figure 3.2 – Controlled Voltage Hookup ...................................................................................... 11

Figure 3.3 – Closeup of SIM card ................................................................................................11

Figure 3.4 – Input Select switch functions on the Input Terminals ...............................................12

Figure 3.5 – 208V 3-Phase AC Mains Wiring ..............................................................................12

Figure 3.6 – 380/400/415V 3-Phase AC Mains Wiring ................................................................12

Figure 4.1 – Push Buttons (2110 and 7794MRL models shown) ................................................. 14

Figure 4.2 – Main Status Indicators (2110 and 7794MRL models shown)...................................15

Figure 4.3 – Main Status Indicators for Stand-Alone Ampliers...................................................15

Figure 4.4 – Fault Status Indicators (2110 and 7794MRL models shown) ..................................16

Figure 4.5 – 7794MRL LCD Display and Navigation Buttons ......................................................16

Figure 4.6 – Fault Status Messages for Stand-Alone Ampliers (7794MRL only) .......................17

Figure 4.7 – Main Status Indicators for Multi-Amplier Systems .................................................18

Figure 4.8 – Fault Status Indicators for Multi-Amplier Systems .................................................19

Figure 4.9 – Back Panel Controls and Connectors ...................................................................... 20

Figure 5.1 – Master or Follower Setting ....................................................................................... 22

Figure 5.2 – Gain Trim Control.....................................................................................................23

Figure 5.3 – Controlled-Voltage or Controlled-Current Mode Setting ..........................................23

Figure 5.4 – Compensation Setting .............................................................................................24

Figure 5.5 – Ready/Run Mode or Standby Mode on Power-Up Setting ......................................24

Figure 5.6 – Standby Mode on Overload Setting ......................................................................... 24

Figure 5.7 – Bi-Level Power Switch Location ..............................................................................25

Figure 6.1 – Input to Output Comparison, Controlled-Voltage Operation ....................................26

Figure 6.2 – Input to Output Comparison, Controlled-Current Operation ....................................26

Figure 6.3 – Factory-installed Default RC Network......................................................................27

Figure 6.4 – Custom Compensation Location..............................................................................29

Figure 6.5 – Compensation Eects on Waveform .......................................................................29

Figure 6.6 – Square Wave Showing a Decrease in R is Required ..............................................29

Figure 6.7 – Square Wave Showing an Increase in R is Required ..............................................29

Figure 6.8 – Square Wave Showing an Increase in C is Required ..............................................29

Figure 6.9 – Remote Status and Control Pinouts ........................................................................30

Figure 6.10 – Remote Status and Reset Schematic .................................................................... 31

Figure 6.11 – Remote Run/Standby Monitor ................................................................................ 32

Figure 6.12 – Remote Enable/Standby ........................................................................................ 33

Figure 6.13 – Remote Current Monitoring ...................................................................................33

Figure 6.14 – Remote Current Monitoring, Alternate Method ......................................................34

Figure 6.15 – Blanking Activation.................................................................................................34

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

Figure 8.2 – Amplier cover removed for inspection .................................................................... 39

Figure 8.3 – Fuse F1 Location .....................................................................................................40

Figure 8.4 – Interlock I/O Connector ............................................................................................ 40

Figure 8.5 – +TEMP and -TEMP test point locations ................................................................... 41

Information subject to change

97-2120001_8-24-2020

2110/2120/7794MR OPERATOR’S MANUAL – SECTION 1

8

1 Introduction

The AE Techron 2110/2120/7794MRL are high-

powered AC/DC linear ampliers and integrated

power supplies that oer exceptional control of

drift and distortion. The 2110/2120/7794MRL

function as a voltage or current source, making

them a great choice for use in the lab or class-

room. Their linear design provides a very-low

noise oor and fast current rise times. Because

the 2110/2120/7794MRL have no ripple noise, no

synching with the console is required.

The 2110/2120/7794MRL also possess a number

of important physical attributes. They combine

small footprints, integrated power supply/amplier

design, rugged construction and modest weight,

to make them a great choice for eld-deployable,

low-eld or small-bore MRI systems.

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 up 200 amperes peak, 180 volts

(2120), 110 amperes peak, 195 volts (2110) or

200 amperes peak, 100 volts (7794MRL).

• 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: –3 dB at 5 kHz (com-

pensation dependent); Voltage mode response:

DC-20 kHz at rated power.

• 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 over-

loads, 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 208-volt (±10%)

3-phase AC mains; 400-volt model available on

request.

Figure 1.1 – 2110 Front Panel

97-2120001_8-24-2020

Information subject to change

9

2110/21207794MR OPERATOR’S MANUAL – SECTION 2

2 Amplier Unpacking and

Installation

The 2110/2120/7794MRL ampliers are precision

instruments that can be dangerous if not handled

properly. Lethal voltages are present in both the

AC input supply and the output of these ampliers.

For this reason, safety should be your primary con-

cern when you setup and operate this amplier.

2.1 Safety First

Throughout this manual special emphasis is

placed on good safety practices. The following

graphics are used to highlight certain topics that

require extra precaution.

Along with any additional accessories purchased

by the customer, all 2110/2120/7794MRL ampli-

ers ship with the following:

1. Toolkit (contains one 1/8-inch Allen drive and

three 2.7-ohm resistors)

2. NEMA connector for power cord

3. 2110/2120/7794MRL Operator’s Manual and

Quick Start

DANGER represents the most severe

hazard alert. Extreme bodily harm or

death will occur if these guidelines are

not followed. Note the explanation of the

hazard and instruction for avoiding it.

DANGER

WARNING alerts you to hazards that

could result in severe injury or death.

Note the explanation of the hazard and

the instructions for avoiding it.

WARNING

CAUTION indicates hazards that could

result in potential injury or equipment

or property damage. Once again, note

the explanation of the hazard and the

instructions for avoiding it.

CAUTION

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 ship-

ping company immediately if damage is found.

Also, please save the shipping carton and materi-

als as evidence of damage and/or for returning the

amplier for repair.

Never attempt to lift the amplier with-

out assistance. Crushing bodily injury

can result if care is not taken during

installation. Cabinets may overturn if

not secured.

WARNING

2.3 Installation

The 2110/2120/7794MRL ampliers have rack

“ears” on each side of the front panel for mounting

to a standard EIA (Electronic Industries Associa-

tion) rack. Use standard rack mounting hardware

to mount the amplier.

NOTE: The 2110 weighs approximately 103

pounds and the 2120 and 7794MRL weigh approx-

imately 153 pounds. Be sure this weight is properly

supported using all the screw locations.

When mounting the amplier in a rack cabinet,

the sidewalls of the rack must be at least 2 inches

away from the chassis on both sides.

Allow for hot air discharge through the amplier’s

rear grill. If your cabinet has a rear door, you must

provide adequate airow through the door. Pro-

vide a source of cool air for fan intakes. If the rack

is crowded or rack ventilation is poor, use a vent

tube to the outside of the rack. Cooling capacity

required is 300 ft3/min. total per amp.

Do not operate the amplier in a small

sealed chamber of any kind. Improper

operations and overheating will result.

CAUTION

Information subject to change

97-2120001_8-24-2020

2110/2120/7794MR OPERATOR’S MANUAL – SECTION 3

10

When operating the 2110/2120/7794MRL in a

dusty environment, use commercial furnace lters,

or equivalent, to prevent rapid clogging of the

lters on the amplier.

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 oper-

ated 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 down-

load 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.

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

four-position terminal barrier block (accepts up to

#4 AWG wire). 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 2110/2120/7794MRL amplier comes

with a factory-installed 2.7-ohm, 2W, 5%, metal-

oxide resistor connecting the terminals marked

“SAMPLED COMMON” and “CHASSIS GROUND”

(see Figure 3.1). This resistor should NOT be

removed. WARNING: Removing this resistor can

ELECTRIC SHOCK HAZARD.

Output potentials can be lethal. Make

connections only with AC Power OFF

and input signals removed.

WARNING

3 Connections and Startup

This section details the wiring and startup proce-

dures for a single 2110, 2120, or 7794MRL ampli-

er operating in Controlled-Voltage mode (factory

default). Before connecting the amplier, make

sure the AC power is disconnected.

3.1 Other Operation Modes and

Congurations

The 2110/2120/7794MRL amplier can be eld-

congured for operation in a number of dierent

ways. These would include Controlled-Voltage

or Controlled-Current 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 2110/2120/7794MRL 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 op-

erating 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 Controlled-

Voltage mode to ensure proper operation.

97-2120001_8-24-2020

Information subject to change

11

2110/21207794MR OPERATOR’S MANUAL – SECTION 3

cause dangerous output and/or damage to the

load unless the amplier is being used as a Fol-

lower amplier in a Series multi-amp system. See

the AE Techron Multi-amp Conguration Guide

for more information on these advanced congura-

tions.

3.2.2 Connecting the Outputs

Locate the four-position terminal barrier block la-

beled OUTPUTS on the amplier back panel. See

Figure 3.2.

Figure 3.3 – Closeup of SIM card

The Input Select switch, located on the SIM mod-

ule between the input connectors, allows conve-

nient 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 con-

nector 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

Figure 3.2 – Controlled Voltage Hookup

Figure 3.1 – Closeup of the Output Terminal Resistor

Connect the negative terminal of the load to the

SAMPLED COMMON terminal.

NOTE: Alternately, the COMMON terminal may be

used when operating in Controlled-Voltage mode;

however, the integrated current monitor will not

function if the COMMON terminal is used, since

it depends on feedback from the Sampled Com-

mon terminal. For operation in Controlled-Current,

mode, the SAMPLED COMMON terminal must be

used.

Connect the load’s positive terminal to the ampli-

er’s OUTPUT terminal.

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 oers the choice of BNC or terminal block

input connectors.

Information subject to change

97-2120001_8-24-2020

2110/2120/7794MR OPERATOR’S MANUAL – SECTION 3

12

Figure 3.4 – Input Select switch functions on

the Input Terminals

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.

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.

Figure 3.5 – 208V 3-Phase AC Mains Wiring Figure 3.6 – 380/400/415V 3-Phase AC Mains Wiring

The risk of lethal ELECTRICAL SHOCK

exists when connecting AC mains! Dis-

connect the source before connecting

AC power wires to the connector.

DANGER

3.4 Connecting the AC Supply

The 2110/2120/7794MRL amplier re-

quires 3-phase wiring. Always operate the

2110/2120/7794MRL amplier from proper AC

mains. The 3-phase, 47 - 60 Hz voltage must be

208 VAC (or optionally 400 VAC) with no more

than 10% variance above or below the line volt-

age. The amplier will not operate properly outside

these limits.

The 2110/2120/7794MRL amplier includes a

NEMA style locking AC connector as standard

equipment. Connect the amplier to the proper

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13

2110/21207794MR OPERATOR’S MANUAL – SECTION 3

3-phase AC mains with this connector. See Fig-

ures 3.5 and 3.6 for proper AC Mains wiring. The

connector then plugs into the 2110/2120/7794MRL

amplier.

3.5 Start-up Procedure

3.5.1 Voltage-Mode Operation

1. Turn down the level of your signal source.

2. Check to make sure the AC Mains Switch/

Circuit Breaker is in the o position

(DOWN).

3. Apply AC power to the amplier.

4. Move the AC Mains Switch/Circuit Breaker

to the on position (UP) to turn the amplier

ON. 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.

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 “Ap-

plications” section of this manual for instructions

on Controlled-Current conguration and operation.

Information subject to change

97-2120001_8-24-2020

2110/2120/7794MR OPERATOR’S MANUAL – SECTION 4

14

4 Amplier Operation

4.1 Front-Panel Controls & Display

This section provides an overview of Front-

Panel controls and indicators found on the

2110/2120/7794MRL.

The Front Panel contains the following:

1. Push buttons

2. Main status indicators

3. Fault status indicator

4. Multi-function LCD display (7794MRL model

only)

5. Navigation buttons (7794MRL model only)

4.1.1 Push Buttons

The 2110/2120/7794MRL provides three front-pan-

el soft-touch Push Buttons (see Figure 4.1):

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

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

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.

Reset – For stand-alone ampliers, when the am-

plier has stopped due to a fault condition, press-

ing the Reset button will return the amplier to Run

Figure 4.1 – Push Buttons (2110 and 7794MRL models shown)

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Information subject to change

15

2110/21207794MR OPERATOR’S MANUAL – SECTION 4

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

all of the ampliers to Run mode if the condition

causing the fault condition has been cleared; how-

ever, pressing the Reset button on other ampliers

in the system will NOT clear the fault condition.

4.1.2 Main Status Indicators

Four Main Status indicators are located on the am-

plier’s front-panel (see Figure 4.2). These LEDs

monitor the internal conditions of the amplier and

indicate the current state of operation. The chart in

Figure 4.3 details the operational modes indicated

by the Main Status indicators.

Figure 4.2 – Main Status Indicators (2110 and 7794MRL models shown)

Figure 4.3 – 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

Action Needed to Return to Run

Mode

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.

N/A

Run

Ready

Standby

Stop

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.

If the amplier remains in Standby mode,

it is being held in Standby by remote con-

trol through the SIM Interlock I/O connec-

tor. 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.

Run

Ready

Standby

Stop

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.

To release the amplier from Stop mode,

press the Enable button.

4.1.3 Fault Status Indicator

The Fault Status indicator is located on the ampli-

er front panel (see Figure 4.4). This LED moni-

tors the internal conditions of the amplier and will

illuminate when a fault condition occurs. Depend-

ing on the fault condition and the conguration of

the unit, the amplier may be placed in Standby

mode when a fault condition occurs.

4.1.4 Multi-Function LCD Display

(7794MRL model only)

The multi-function LCD display provides peak and

RMS values for voltage and current measured

directly from the amplier output. On startup,

the LCD Display will provide readings for all four

measurements: Volts peak, Volts RMS, Current

Information subject to change

97-2120001_8-24-2020

2110/2120/7794MR OPERATOR’S MANUAL – SECTION 4

16

Figure 4.4 – Fault Status Indicators (2110 and 7794MRL models shown)

Figure 4.5 – 7794MRL LCD Display and Navigation

Buttons

peak, and Current RMS (see Figure 4.5). Use the

Navigation buttons to scoll to other available dis-

plays, such as peak voltage and current only, RMS

voltage and current only, or other combinations.

If the amplier experiences a fault condition, the

LCD display will automatically display details of

the fault condition and prescribed corrective ac-

tions. Refer to the chart in Figure 4.6 to determine

the fault condition being indicated and the action

required to clear the fault condition.

4.1.5 Navigation Buttons

The Navigation buttons provide four arrow keys to

allow navigation through the dierent voltage and

current measurement functions on the LCD display

screen. See Figure 4.5.

NOTE: The Enter button has been provided for

future expansion and has no function at this time.

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 Error Messages for

Multi-Amp Systems (7794MRL

only)

Four dierent fault error messages may be dis-

played on the amplier’s front panel LCD screen

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-

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.

97-2120001_8-24-2020

Information subject to change

17

2110/21207794MR OPERATOR’S MANUAL – SECTION 4

Figure 4.6 – Fault Status Messages for Stand-Alone Ampliers (7794MRL only)

Indicator is lit Indicator is not lit Indicator may be lit

Main Status

Indicators

Fault Status

Reported on

LCD Display State of Operation

Action Needed to Clear Fault

Condition and Return to

Run Mode

Run

Ready

Standby

Stop

WARNING!

OUTPUT

DEVICE FAULT

Output Device Fault: This indicates

that an Output Fault condition has oc-

curred and the amplier has been placed

in Standby mode. The Fault indicator

will light under two conditions: 1) High-

frequency oscillation is causing high

shoot-through current; or 2) An output

transistor has shorted, causing the output

fault condition.

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.

Run

Ready

Standby

Stop

WARNING!

OVERLOAD

Overload: This indicates that the output

of the amplier could not follow the input

signal due to voltage or current limits. Un-

der normal operation with the factory-de-

fault 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.

To remedy the Overload fault during

operation, turn down the level of the input

signal until the Fault indicator turns o. 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.

Run

Ready

Standby

Stop

WARNING!

OVERTEMP

Overtemp: The amplier monitors

the temperature inside the high-voltage

transformers, low-voltage transformer

and in the output stage heat sinks. The

Fault 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

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.

To reset after an Over Temp fault has oc-

curred, 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 Over Temp, then the

system will not automatically return to Run

mode. In that case, push and hold the Re-

set button on any amplier displaying the

Over Temp status until the Standby LED

turns o, then release the Reset button to

return the system to Run mode. Please

see the “Troubleshooting” section for

information on correcting the cause of an

Over Temp fault condition.

Run

Ready

Standby

Stop

WARNING!

OVERVOLTAGE

Overvoltage: This indicates that the

AC mains voltage is more than +10% of

nominal. The amplier will be forced to

Standby when an Overvoltage condition

occurs. When the Overvoltage condition

is cleared, the amplier will automatically

return to Run mode.

To clear an Overvoltage 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 Overvolt-

age condition has cleared, the amplier

may require servicing. Please see the

”Troubleshooting” section for more

information.

Information subject to change

97-2120001_8-24-2020

2110/2120/7794MR OPERATOR’S MANUAL – SECTION 4

18

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

Main Status of

Other Amps in

the System State of Operation

Action Needed to Return to

Run Mode

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.

N/A

Run

Ready

Standby

Stop

Run

Ready

Standby

Stop

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 ener-

gized but the high-voltage transformers

are not.

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

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 low-

voltage transformer is energized but the

high-voltage transformers are not.

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.

Run

Ready

Standby

Stop

Run

Ready

Standby

Stop

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 trans-

former is energized but the high-voltage

transformers are not.

To release the system from Stop mode,

press the Enable button on the ampli-

er displaying the Stop mode status.

97-2120001_8-24-2020

Information subject to change

19

2110/21207794MR OPERATOR’S MANUAL – SECTION 4

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

Main Status

Indicators of

Other Amps

in System State of Operation

Action Needed to Clear

Fault Condition and Re-

turn to Run Mode

Main Status

Indicators

Fault Status

Reported on

LCD Display

Run

Ready

Standby

Stop

WARNING!

OUTPUT

DEVICE FAULT

Run

Ready

Standby

Stop

Output Device Fault sta-

tus: This indicates that an Out-

put Fault condition has occurred

in the amplier displaying the

Fault status, and the system has

been placed in Standby mode.

The Fault indicator will light

under two conditions: 1) High-

frequency oscillation is causing

high shoot-through current; or 2)

An output transistor has shorted,

causing the output fault condi-

tion.

This fault condition cannot be

cleared using the front-panel

Reset button. See the ”Trou-

bleshooting” section for more

information on diagnosing and

clearing this fault condition.

Run

Ready

Standby

Stop

WARNING!

OVERLOAD

Run

Ready

Standby

Stop

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 Stand-

by on Overload, the system

will be placed in Standby mode

when the Fault indicator lights.

To remedy the Overload fault

during operation, turn down the

level of the input signal until

the Overload indicator turns

o. 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.

Run

Ready

Standby

Stop

WARNING!

OVERTEMP

Run

Ready

Standby

Stop

Overtemp status: Each am-

plier in the system monitors the

temperature inside the high-volt-

age 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.

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 re-

turn to Run mode. In that case,

push the Reset button on any

amplier displaying the Over-

temp status to return the system

to Run mode. Please see the

”Troubleshooting” section

for information on correcting

the cause of an Overtemp fault

condition.

Information subject to change

97-2120001_8-24-2020

2110/2120/7794MR OPERATOR’S MANUAL – SECTION 4

20

One or More Amps in System

Main Status

Indicators of

Other Amps

in System State of Operation

Action Needed to Clear

Fault Condition and Re-

turn to Run Mode

Main Status

Indicators

Fault Status

Reported on

LCD Display

Run

Ready

Standby

Stop

WARNING!

OVERVOLTAGE

Run

Ready

Standby

Stop

Overvoltage status: This

indicates that the AC mains

voltage is more than +10% of

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.

To clear an Overvoltage fault

condition, the AC mains must

be brought down to the nomi-

nal 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.

4.2 Back-Panel Controls

and Connectors

This section provides an overview of Back-

Panel controls and connectors found on the

2110/2120/7794MRL amplier. Please refer to

Figure 4.9 for visual locations.

AC Power Connector - This is a NEMA style twist

lock, 4 pin (208V) or 5-pin (400V), three-phase

connector. See page Error! Bookmark not dened.

for terminal connections.

Low-Voltage Fuse - This is a 1A slow blow type

600-volt rated fuse.

Figure 4.9 – Back Panel Controls and Connectors

AC Mains Switch/Circuit Breaker - This dual

function power switch and circuit breaker opens all

legs of the AC mains. The rating is 20A (2110) or

30A (2120) for 208 volts.

Output Terminal Block - Connect output lines

from the load to this 4-terminal block. It accepts up

to #4 AWG wire. Drive the load in the Controlled

Current mode using the OUTPUT terminal and the

SAMPLED COMMON terminal only.

BNC Input Connector - This input option provides

a standard unbalanced input.

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