Delta A3000 User manual

A3000
AC Power Source
User Manual
www.deltaww.com

Warranty ......................................................................................................................................................... 1
Warranty Coverage........................................................................................................................................ 1
Safety Summary ............................................................................................................................................ 1
Safety Symbols.............................................................................................................................................. 2
Accessories ................................................................................................................................................... 3
Revision History ............................................................................................................................................ 4
1. General Information .................................................................................................................................. 5
1.1 Introduction........................................................................................................................................... 5
1.2 Key Features ........................................................................................................................................ 5
1.3 Specifications ....................................................................................................................................... 5
1.4 Name of Parts....................................................................................................................................... 7
1.4.1 The Front Panel........................................................................................................................... 7
1.4.2 The Rear Panel............................................................................................................................ 8
2. Installation................................................................................................................................................ 10
2.1 Inspection ........................................................................................................................................... 10
2.2 Preparation for Use ............................................................................................................................ 10
2.3 Requirements of Input Power ............................................................................................................. 10
2.3.1 Ratings....................................................................................................................................... 10
2.3.2 Input Connection........................................................................................................................ 10
2.4 Output Connection.............................................................................................................................. 12
2.4.1 Output connection...................................................................................................................... 12
2.5 Remote Sense Connection................................................................................................................. 12
2.6 The Procedures to Power-on.............................................................................................................. 13
3. Local Operation ...................................................................................................................................... 14
3.1 Introduction......................................................................................................................................... 14
3.2 Operation through Keypad and Knob ................................................................................................. 14
3.3 Main Manual Setting........................................................................................................................... 17
3.4 Advanced Parameter Setting Manual ................................................................................................. 18
3.5 SETUP Function................................................................................................................................. 18
3.5.1 Voltage Limit .............................................................................................................................. 19
3.5.2 I Limit, OCP Delay ..................................................................................................................... 20
3.5.3 Voltage Level Setting................................................................................................................. 22
3.5.4 Voltage Sense............................................................................................................................ 22
3.5.5 Degree On, Off .......................................................................................................................... 23
3.5.6 Is Start, Is Interval...................................................................................................................... 24
3.5.7 Waveform Selection................................................................................................................... 25
3.5.8 Buzzer........................................................................................................................................ 26
3.5.9 Disable (Lock) the Keys at Front Panel ..................................................................................... 27
User Manual
A3000
AC Power Source

3.6 CONFIG Function............................................................................................................................... 27
3.6.1 Waveform A, B Generator.......................................................................................................... 28
3.6.2 GPIB, RS232 Communication Setting....................................................................................... 30
3.6.3 Inhibit Output by Remote Control Signal（Remote Inhibit）..................................................... 32
3.6.4 Power On State ......................................................................................................................... 34
3.7 Protection ........................................................................................................................................... 35
3.8 Applications ........................................................................................................................................ 37
3.8.1 Introduction................................................................................................................................ 37
3.8.2 LIST Mode ................................................................................................................................. 37
3.8.3 PULSE Mode............................................................................................................................. 41
3.8.4 STEP Mode ............................................................................................................................... 44
3.8.5 SYNTHESIS Self-Defined Waveform Mode .............................................................................. 47
3.9 Save and Recall Functions................................................................................................................. 49
3.9.1 Save and Recall the Main Page Setting .................................................................................... 49
3.9.1.1 Save the Main Page Setting ................................................................................................ 49
3.9.1.2 Recall the Main Page Setting .............................................................................................. 49
3.9.2 Save and Recall the System Setting ......................................................................................... 50
3.9.2.1 Save System Setting ........................................................................................................... 51
3.9.2.2 Recall System Setting.......................................................................................................... 52
4. Remote operation.................................................................................................................................... 53
4.1 Introduction......................................................................................................................................... 53
4.1.1 Set GPIB address and RS-232 Parameters .............................................................................. 53
4.1.2 RS-232 pin definition ................................................................................................................. 53
4.1.3 GPIB Interface ........................................................................................................................... 53
4.2 Programming ...................................................................................................................................... 54
4.2.1 Conventions............................................................................................................................... 54
4.2.2 Numerical Data Formats............................................................................................................ 54
4.2.3 Boolean Data Format................................................................................................................. 54
4.2.4 Basic Definition of Command .................................................................................................... 54
4.3 Command for Remote Control............................................................................................................ 56
4.3.1 IEEE 488.2 Standard Command ............................................................................................... 56
4.3.2 Instrument Commands .............................................................................................................. 57
4.3.2.1 FETCH and MEASURE Subsystem .................................................................................... 57
4.3.2.2 OUTPUT Subsystem .......................................................................................................... 60
4.3.2.3 SOURCE Subsystem .......................................................................................................... 61
4.3.2.4 Other Commands ................................................................................................................ 73
4.3.3 Summary of Commands............................................................................................................ 74
Appendix A TTL Pin Assignment ............................................................................................................... 78
Appendix B Built In Waveforms ................................................................................................................. 79

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User Manual
A3000
AC Power Source
Warranty
The Scope of Rights:
1. All Delta instruments are warranted against defects in material and workmanship for a period
of one year after date of shipment.
2. Please contact service center or Delta electronics immediately if malfunctions are found.
3. If malfunctioned products is not located at where it was purchased. You can contact
worldwide Delta electronics branches to get service.
Warranty Coverage
Warranty Coverage
1. Products repaired or altered by persons not authorized by Delta, or not in accordance with
instructions provided by Delta.
2. Products failure caused by nature disaster or hazardous / dangerous environments:
earthquake, typhoon, thunder-strike, voltage abnormal, collusion chemical, oil, in the
presence of mice or bugs.
3. Out looking aged by normal operation.
4. Consumables parts and accessories.
Delta will not provide free service under following conditions:
1. Warranty expired.
2. Within warranty limited, customer did not adapt correct operation procedure after Delta
provide free training.
3. Product list in warranty book does not match with real product.
Safety Summary
The following general safety precautions must be observed during all phases of operation, service,
and repair of this instrument. Failure to comply with these precautions or specific WARNINGS given
elsewhere in this manual will violate safety standards of design, manufacture, and intended use of
the instrument.
Delta assumes no liability for the customer's failure to comply with these requirements.
BEFORE APPLYING POWER
Verify that the product is set to match with the line voltage.

User Manual
A3000
AC Power Source
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PROTECTIVE GROUNDING
Make sure to connect the protective grounding to prevent an electric shock before turning on the
power.
NECESSITY OF PROTECTIVE GROUNDING
Never cut off the internal or external protective grounding wire, or disconnect the wiring of protective
grounding terminal. Doing so will cause a potential shock hazard that may bring injury to a person.
FUSES
Only fuses with the required rated current, voltage, and specified type (normal blow, time delay,
etc.）can be used. Do not use different fuses or short-circuited fuse holders. To do so might cause
a shock or fire hazard.
DO NOT OPERATE IN AN EXPLOSIVE ATMOSPHERE
Do not operate the instrument in the presence of flammable gases or fumes.
DO NOT REMOVE THE COVER OF THE INSTRUMENT
Operating personnel must not remove the cover of the instrument. Component replacement and
internal adjustment can be done by qualified service personnel only.
When install or take off external terminals with hazard voltage, AC input voltage must be cut off or
take action to make safety isolation.
Safety Symbols
!
!
WARNING
DANGER - High voltage.
Output of AC power source can provide peak voltage up to 426V, touched by
personnel may lead to death
!
!
WARNING
Attention: To avoid injury, death of personnel, or damage to the instrument, the
operator must refer to an explanation in the instruction manual.
!
!
WARNING
Protective grounding terminal: To protect against electrical shock in case
of a fault. This symbol indicates that the terminal must be connected to ground
before operation of equipment.
!
!
WARNING
A WARNING sign denotes a hazard. It calls attention to a procedure, practice,
condition or the like which may result in injury or death of personnel if it is not
rightly observed.
Acoustic noise information
This product has sound pressure release holes (which located at same side as operator) with
acoustic noise <65dB (A)

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User Manual
A3000
AC Power Source
Accessories
Please check the following accessories are included and not damaged during shipment. If there are
damaged or shortage of the accessories, please contact Delta Electronics or sales agent for help.
Note 1. ■standard parts.
Note 2. □options.

User Manual
A3000
AC Power Source
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Revision History
The following list indicates the additions, deletions and modifications in this manual at each
revision.
Version Date Revised section
00 June 13th, 2018

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User Manual
A3000
AC Power Source
1. General Information
1.1 Introduction
This manual describes the specifications, installation and operation instructions of Delta
A3000 SERIES Programmable AC Power Source. In this manual the term, AC Source,
stands for Delta A3000 SERIES Programmable AC Source.
The series of AC source is a high efficiency programmable ac power source, which provide
low distortion sinusoid AC voltage output and measurement. Stable voltage and frequency
are obtained through accurate digital calculation provided by DSP IC. Remote programming
is accomplished either by the GPIB bus or the RS-232C serial port.
1.2 Key Features
A. Configuration
• Local operation from the front panel keypad
• Protection against Over-power, Over-load, Over-temperature, and Fan-fail
• Fan speed controlled by output power
• Built-in isolation output relays
• Remote operation via GPIB or RS-232C interface
B. Input/output
• Selective output voltage ranges with full scale of 150V/32A and 300V/16A
• V, I, F, P, CF, PF, Ip, Is, VA, and VAR measurements
• Remote inhibit control
• AC ON/OFF, FAULT OUT TTL output signal.
1.3 Specifications
The operation specifications of A3000 SERIES Programmable AC Power Source are
listed below. All specifications have been tested according to the standard of Delta test
procedures. All specifications are based on resistor load with remote sense connection,
under 25±1℃ unless specified otherwise.
Model A3000
Output Phase Single
Output Power
Power/phase 3000 VA
Voltage
Range/Phase 150V/300V
Accuracy 0.2%+0.2%F.S.

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A3000
AC Power Source
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Resolution 0.1V
Distortion 1% (30Hz~1kHz)
Line Regulation 0.1%
Load Regulation 0.1%
Temp. coefficient 0.02% per ℃from 25℃
Current
Accuracy (rms) 0.4%+0.3%F.S.
Accuracy (peak) 0.4%+0.6%F.S.
Resolution 0.01 A
Max. current
rms 30A / 15A(150V/300V)
peak 90A / 45A(30Hz~1kHz)
75A / 38A(>100Hz~1kHz)
Frequency
Range 30-1KHz
Accuracy 0.3Hz
Resolution 0.1Hz
Input
Voltage Range 190~254Vac, 1φ3wires
Frequency Range 47-63Hz
Current 20A Max.
Efficiency 80% typ. At full load
Protection
UVP, OCP, OPP, SCP, OTP, FAN FAIL
Temperature
Operating 0℃~ 40℃
Storage -40℃~ 85℃
Humidity 30 % ~ 90 %
Other
Safety CE (LVD&EMC EN61326)
Interface GPIB，RS-232
Dimension (L*W*H) mm 520 x 425 x 176 mm
Weight 28 Kg

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User Manual
A3000
AC Power Source
1.4 Name of Parts
1.4.1 The Front Panel
Figure 1-1 the Front Panel
Front Panel Description
Item Symbol Description
1LCD panel, display setting and measurement results.
2
OUT
TRIGGER
▲ ▼
Save Recall
▼
Page down
▲
Page up
ESC/
Cancel
Enter
Unlock
–
/
Menu/
Home
OUT
123
456
789
0•
1
0
!
LED indicator：
•OUT（green）indicates AC source normal output
•TRIGGER（yellow）indicates LIST、PULSE、STEP output
3
OUT
TRIGGER
▲ ▼
Save Recall
▼
Page down
▲
Page up
ESC/
Cancel
Enter
Unlock
–
/
Menu/
Home
OUT
123
456
789
0•
1
0
!
Short press：Cursor move upward or downward.
Long press ：long press at ｢main manual ｣, ｢advanced
parameters setting manual｣pages, will enter ｢save, restore｣page
4
OUT
TRIGGER
▲ ▼
Save Recall
▼
Page down
▲
Page up
ESC/
Cancel
Enter
Unlock
–
/
Menu/
Home
OUT
123
456
789
0•
1
0
!
Page switches, digital number selection
5
OUT
TRIGGER
▲ ▼
Save Recall
▼
Page down
▲
Page up
ESC/
Cancel
Enter
Unlock
–
/
Menu/
Home
OUT
123
456
789
0•
1
0
!
Escape current page（ESC）or cancel current settings (Cancel）
6
OUT
TRIGGER
▲ ▼
Save Recall
▼
Page down
▲
Page up
ESC/
Cancel
Enter
Unlock
–
/
Menu/
Home
OUT
123
456
789
0•
1
0
!
Confirm parameter setting

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A3000
AC Power Source
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7
OUT
TRIGGER
▲ ▼
Save Recall
▼
Page down
▲
Page up
ESC/
Cancel
Enter
Unlock
–
/
Menu/
Home
OUT
123
456
789
0•
1
0
!
Back to local control in remote mode
Negative sign in panel control
8
OUT
TRIGGER
▲ ▼
Save Recall
▼
Page down
▲
Page up
ESC/
Cancel
Enter
Unlock
–
/
Menu/
Home
OUT
123
456
789
0•
1
0
!
At main manual page, press this key to enter "advanced parameter
setting" page；at other pages, press this key to return to main
manual
9
OUT
TRIGGER
▲ ▼
Save Recall
▼
Page down
▲
Page up
ESC/
Cancel
Enter
Unlock
–
/
Menu/
Home
OUT
123
456
789
0•
1
0
!
Press this key to control ON/OFF state of AC output voltage
10
OUT
TRIGGER
▲ ▼
Save Recall
▼
Page down
▲
Page up
ESC/
Cancel
Enter
Unlock
–
/
Menu/
Home
OUT
123
456
789
0•
1
0
!
Digital numerical keypad group：Used for parameter setting
11
OUT
TRIGGER
▲ ▼
Save Recall
▼
Page down
▲
Page up
ESC/
Cancel
Enter
Unlock
–
/
Menu/
Home
OUT
123
456
789
0•
1
0
!
Knob: Used for parameters setting or selection
12
OUT
TRIGGER
▲ ▼
Save Recall
▼
Page down
▲
Page up
ESC/
Cancel
Enter
Unlock
–
/
Menu/
Home
OUT
123
456
789
0•
1
0
!
Main switch：Turn on/off the AC power input
1.4.2 The Rear Panel
Figure 1-2 the Rear Panel

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User Manual
A3000
AC Power Source
Rear Panel Description
Item Name Description
1 Mark
2 RS-232 D type 9Pin female connector, for remote control.
3 GPIB connector IEEE 488 standard connector, for remote control.
4 TTL I/O The 9-pin, D-type female connector conveys TTL signals (AC_
ON, FAULT_OUT and REMOTE_INHIBIT).
5 SYNC When output change according new parameter setting, SYNC
will output Synchronized signal.
6 Output connector Output connector. Outputs power to the loading device.
7 Power Line input
Connector
Input connector. Please refer to paragraph 2.3.2 for connection.

User Manual
A3000
AC Power Source
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2. Installation
2.1 Inspection
First, inspect any damage that may have occurred during the shipment after unpacking the
instrument. Save all packing materials in case the instrument has to be returned.
If any damage is found, please file a claim against the carrier immediately. Do not return the
instrument to the factory without obtaining the prior RMA acceptance from Delta.
2.2 Preparation for Use
Before start using, the instrument must be connected with an appropriate AC line input.
As the instrument is cooled by fans, it must be installed in an area with sufficient space for
air circulation. It should be used in an area where the environment temperature does not
exceed 40℃.
2.3 Requirements of Input Power
2.3.1 Ratings
Input Voltage Range: 190-254 Vac, 1 phase 3 wires
Input Frequency: 47-63Hz
Max. Current/Phase: 20A
!
!
WARNING
*** CAUTION ***
The AC source may be damaged if it is operated at an input voltage that is over
its configured input range.
2.3.2 Input Connection
The input terminal block is located on the instrument rear panel. The temperature rating
of the power cord must be rated at least for 85 ℃. The current rating of input power line
must be greater than or equal to the maximum current rating of the AC source. to put a 30A
breaker (ABT A) (30A breaker (ABT B)) at AC input side.
See Figure 2.3.2.1~2.3.2.4 and do the following steps one by one:
1. Remove the safety cover at the back side of AC source.
2. Connect the ac lines to the terminal blocks of the AC source as Figure 2.3.2.1/2.3.2.3
shows.
3. Make sure the removable safety cover does fully cover the AC input terminal.
4. Turn off AC power supply to AC source or make safety isolation before installing or
taking off external terminal with hazard voltages.

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User Manual
A3000
AC Power Source
!
!
WARNING
*** CAUTION ***
To protect operators the wire connected to the GND terminal must be connected
to the ground. Under no circumstances shall this AC source be operated without
an adequate ground connection.
Installation of the AC input power cord must be done by a professional personnel in
accordance with local electrical codes.
Figure 2.3.2.1 220Vac single-phase input connection
Figure 2.3.2.2 220V input terminal

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A3000
AC Power Source
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2.4 Output Connection
2.4.1 Output connection
The output terminal block is located at the rear of the AC source. Load connecting to the
"N" and "L" is done at the output terminals. To meet the safety requirements, the safety
cover must be fasten. The wires to the load must be sufficiently large gauges, so they will
not overheat while carrying the output current. Please see Figure 2.5.1 on the next page.
2.5 Remote Sense Connection
The AC source remote sense function monitors the load terminal voltage instead of the AC
source output terminal. It ensures the delivery of accurate voltage as programmed at the
load by compensating the output voltage drop over the connecting cable automatically. You
have to set Remote Sense ON so as to enable this function.
Connect the sensing wires from“Ls”and“Ns”terminals to the load as shown in Figure
2.5.1. As the sensing wires carry only a few milli- amperes, the wire gauges are much
smaller than the load cables. The sensing wires are part of the feedback path of the AC
source. They must be kept at a low resistance in order to maintain the best performance.
Connect the sensing wires carefully so that they will not be open-circuited. If the sensing
wires are left unconnected or become open-circuited during operation, the AC source will
disable the output. The sensing wires must be a twisted pair to minimize the pickup of
external noise. The sensing wires need to be connected as close to the load input terminal
as possible.
Figure 2.5.1 DE-A3000AB X

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User Manual
A3000
AC Power Source
2.6 The Procedures to Power-on
!
!
WARNING
*** CAUTION ***
Before turning on the instrument, all protective earth terminals, extension
cords, and devices connected to the instrument must be connected to a
protective ground. Any interruption of the protective grounding will cause a
potential shock hazard that might injure people.
Connect the AC voltage, and turn on the power switch on the front panel. The AC source
will do a series of self-tests every time it is turned on. The LCD on the front panel will light
up and display as below under normal condition:
After self-testing, AC source will enter main setting page which is shown as below.
!
!
WARNING
*** CAUTION ***
1. Error messages will show on the LCD panel if error occurs during turn on
process. Please check section 3.7 for error code.
2. Digital circuit inside AC source may not operate properly if turn on AC source
immediately after turn off. Recommend to wait 3 seconds to turn on AC
source after it was turned off.

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AC Power Source
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3. Local Operation
3.1 Introduction
The AC source can be configured to operate in local or remote mode. The operation in
remote mode through GPIB controller or RS-232C will be described in Chapter 4. This
chapter describes the operation in local mode through the keypad on the front panel for
data entry and test. If remote control cable are not connected, the AC source is configured
for local operation after AC switch is on.
LCD panel will show the self-test message as below after AC switch is on.
Then will enter main manual setting page as below. Operator can set output voltage and
frequency for three phase.
3.2 Operation through Keypad and Knob
A3000 series provides a user-friendly programming interface by using the keypad on the
front panel.
Press
▲ ▼
Save Recall
move cursor between voltage and frequency to make selection. Use
numerical and decimal point key or knob to set number, press
Enter
to confirm selection.
User can press
Menu/
Home
to enter screen as below: user can enter advanced parameter
setting manual to make more detail setting from this page, or press
Menu/
Home
again back to
main manual.

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User Manual
A3000
AC Power Source
At the list selection manual as above, user can press numerical key to do the selection,
then press
Enter
to enter advanced parameter setting manual. After entering advanced
setting manual, press
▲ ▼
Save Recall
to move cursor to item which wants to modify, use
numerical key or knob to do the modification, then press
Enter
to confirm.
If there are ｢Press to switch page｣shown at the bottom of the manual,
use
▼
Page down
▲
Page up
to switch pages. When setting is finished, press
ESC/
Cancel
back to list
selection manual, or press
Menu/
Home
back to main manual.

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The command tree is shown as below:
MAIN PAGE
MENU
I Spike Start
I Spike Interval
V Limit
I Limit
I Limit Delay
Degree On
Degree Off
Voltage Level
List Waveform
Wave B CSIN CF
GPIB Addres
RS232 Parity
RS232 Baud Rate
Power On Output, Vac, F
Remote Inhibit
List Fs, Fe
List Vs, Ve
COUNT
Voltage Sense
List Degree
Wave A
Wave A CSIN CF
Wave B
Waveform
Buzzer
Key Lock
List Time
COUNT
Pulse Vac
Pulse F
PHASE
Pulse Period
Pulse Degree
COUNT
Step Dwell
Step Vac, DV
Step F, DF
Step Degree
GAIN
Pulse Duty
1.SETUP
3.List
2.CONFIG
4.Pulse
5.Step
6.Synthesis Synthesis Waveform

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User Manual
A3000
AC Power Source
3.3 Main Manual Setting
After the AC source is on and initialization is finished, screen will show the main manual.
Default output voltage and frequency is 110V and 60Hz. Voltage and frequency setting are
shown on the left side of the screen, the right side of the screen shows the measurement
value, example shown as below.
Display at upper left
SET MODE：Setting mode, no voltage output from AC source.
OUT MODE：Output mode. When user press
OUT
at SET MODE, AC source outputs
voltage.
Parameter definition of output setting：
V : Alternative current output voltage (Vrms), unit is volt.
F : Output frequency, unit is Hertz.
Parameter definition of measurement：
V : Voltage (Vrms), voltage measurement value (root mean square), unit is Volt.
I : Current (Irms), measurement value use Irms as unit.
F : Frequency, measurement value use Hz as unit.
P : Power, measurement vale use Watt as unit.
Ip : Peak current measurement value. Unit is Ampere.
Is : Surge current measurement value. Unit is Ampere.
PF : Power Factor measurement value. Calculation equation is Real power/(Vrms x Irms).
CF : Crest Factor, calculation equation is Ipeak/Irms.
VA : Apparent power, calculation equation is Vrms x Irms.
VAR : Reactive power. Calculation equation is VA2 - P2