User Manual for UNI-T models including: UAP500A Programmable AC Power Source, UAP500A, Programmable AC Power Source, AC Power Source, Power Source, Source

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User’s Manual

User’s Manual UAP500A/1000A


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UAP500A1000A User Manual
User's Manual
UAP500A/1000A Programmable AC Power Source

User's Manual

UAP500A/1000A

Perface
Thank you for purchasing this brand new product programmable variable frequency AC power supply. In order to use this product safely and correctly, please read this manual thoroughly, especially the safety notes.
Copyright Information
Copyright is owned by Uni-Trend Technology (China) Co., Ltd.
UNI-T products are protected by patent rights in China and other countries, including issued and pending patents. Uni- Trend reserves the rights to any product specification and pricing changes.
Uni-Trend Technology (China) Co., Ltd. all rights reserved. Trend reserves all rights. Information in this manual supersedes all previously published versions. No part of this manual may be copied, extracted or translated by any means without the prior permission of Uni Trend.
UNI-T is the registered trademark of Uni Trend Technology (China) Co., Ltd.

Warranty Service
The instrument has a warranty period of one year from the date of purchase. If the instrument is damaged due to improper operation by the user during the warranty period, the maintenance fee and the costs caused by the maintenance shall be borne by the user, and the instrument shall be maintained by the company for life.
If the original purchaser sells or transfers the product to a third party within one year from the date of purchase of the product, the warranty period of one year shall be from the date of the original purchase from UNI-T or an authorized UNl-T distributor. Power cords, accessories and fuses, etc. are not included in this warranty.
If the product is proved to be defective within the warranty period, UNI-T reserves the rights to either repair the defective product without charging of parts and labor, or exchange the defected product to a working equivalent product (determined by UNI-T). Replacement parts, modules and products may be brand new, or perform at the same specifications as brand new products. All original parts, modules, or products which were defective become the property of UNI-T.
The "customer" refers to the individual or entity that is declared in the guarantee. In order to obtain the warranty service, "customer "must inform the defects within the applicable warranty period to UNI-T, and perform appropriate arrangements for the warranty service.
The customer shall be responsible for packing and shipping the defective products to the individual or entity that is declared in the guarantee. In order obtain the warranty service, customer must inform the defects within the applicable warranty period to UNI-T, and perform appropriate arrangements for the warranty service. The customer shall be responsible for packing and shipping the defective products to the designated maintenance center of UNI-T, pay the shipping cost, and provide a copy of the purchase receipt of the original purchaser. If the products is shipped domestically to the purchase receipt of the original purchaser. If the product is shipped to the location of the UNI-T service center, UNI-T shall pay the return shipping fee. If the product is sent to any other location, the customer shall be responsible for all shipping, duties, taxes, and any other expenses.

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Limited Warranty and Liability
The warranty is inapplicable to any defects, failures or damages caused by accident, normal wear of components, use beyond specified scope or improper use of product, or improper or insufficient maintenance. UNI-T is not obliged to provide the services below as prescribed by the warranty: a) Repair damage caused by installation, repair or maintenance of personnel other than service
representatives of UNI-T; b) Repair damage caused by improper use or connection to incompatible equipment; c) Repair any damages or failures caused by using power source not provided by UNI-T; d) Repair products that have been changed or integrated with other products (if such change or
integration increases time or difficulty of repair).
The warranty is formulated by UNI-T for this product, replacing any other express or implied warranties. UNI-T and its distributors refuse to give any implied warranty for marketability or applicability for special purpose. For violation of the warranty, repair or replacement of defective products is the only and all remedial measure UNI-T provides for customers.
No matter whether UNI-T and its distributors are informed of any possible indirect, special, occasional or inevitable damage in advance, they assume no responsibility for such damage.

Safety Information

Warning

CautionTo avoid possible electric shock and personal safety problem, please

follow the instructions below.

Disclaimer
Instrument Grounding
Operating voltage
Input voltage
Do Not use the instrument in an explosive atmosphere
Do Not open the cover
Do Not use abnormal instrument Do Not use the instrument in an explosive atmosphere

Please read the following safety information carefully beforestarting to use the instrument. Uni-Trend will not be responsible for the personal safety and property damage caused by the user's failure to comply with the following terms.
To prevent the risk of electric shock, please use the cable provide by the factory to connect the instrument and power ground wire.
Please make sure operating voltage under rated range of 10%, to avoid damage the instrument.
Read all the marks on the instrument before connecting. The instrument provides 220V two kinds of AC input mode, check whether the conversion switch of variable frequency power supply matches with input power and ensure that the fuse is installed in place. Otherwise, the variable frequency AC power supply may be damaged. Do not use the instrument in flammable and explosive gas, steam or dusty environment. The use of any electronic equipment in such an environment is a risk to personal safety. Please do not open the instrument case, non-professional maintenance personnel should not open the instrument cover to repair the instrument. There is still an undischarged charge in a period of time after the instrument has been turned off, which may pose a risk of electric shock to persons. When the instrument is in operating, do not touch the bare connect wire, spare input terminal and the circuit is in testing. When the instrument is over DC 60V or AC 30V, be careful electric shock.
If the instrument is not working properly and its danger is unpredictable, please disconnect the power cord and do not use it again or try to repair it by yourself.

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Do Not use the instrument over this manual
Do Not replace or perform unauthorized modification

If use the instrument over this manual, the protective measures will be out of effect. It is strictly prohibited to use this instrument in life support system or any other equipment with safety requirements.
To make sure the security of programmable variable frequency AC power supply, please do not replace the components or perform any other unauthorized modifications. Do not use the instrument if the cover has been removed or loosened, it may cause a hazard.

Safety Mark

DC AC Both Direct and Alternating Current Three Phase AC
Grounding
Protective Grounding
Signal Ground
Danger

Netrual/Zero Line Live Line On (Power) Off (Power)
Backup Power
Connect with Cabinet or Case
Caution

Environment-friendly Use Period
EFUP is the period of time before any of the RoHS substances are likely to leak out, causing possible harm to health and the environment. EFUP of this instrument is 40 years, it should be recycling system when exceed 40 years
Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC

Must not be discarded in the trash can.
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Product Overview
Thank you for purchasing UNI-T programmable variable frequency AC power supply, this section includes the following contents:
1.1 Product Serie
This serie has two modelsUAP500A500VAand UAP1000A1000VA.
UAP500A/1000A is AC power supply, it can measure the low distortion sine wave output and the accuracy of power supply; It has advanced direct digital synthesizer (DDS) waveform generation technology and Sinusoidal Pulse Width Modulation (SPWM) technology with high frequency stability and good continuity; Front panel has rotary knob and keypad to control and set the current and frequency; LCD is for full operating states; It can remote programming by RS-232C communication interface.
1.1.1 Characteristics  Output constant voltage and continuously adjustable  Over current/temperature/load and short circuit protection  Advanced direct digital synthesizer (DDS) waveform generation technology with high frequency stability and good continuity  Build-in intelligent PC monitoring system All range adjustable output voltage 0-150V/0-300Vstep 0.01V  Output frequency 45-250Hzstep0.01Hz;  Remote control by RS-232C communication interface  Provide reading of voltage, active power, frequency, power factor  Press keypad to input parameter of voltage, frequency, cut-off current, high accuracy  9 sets of voltage, current, frequency can be adjusted freely  One-key to switch high-low voltage output  Input delay can set as user custom

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1.2 Front Panel

UAP500A/1000A

Figure 1.2.1 Front PanelTake UAP500A as an example

Table 1.2.1 Introduction of Front Panel

No. Name and Picture

Description

1

Hand for move the instrument

2

For turn on/off power

3

VA screen for display reading and setting

4

Lens for protecting screen

5

Numeric keypad for setting parameter

6

Direction key for moving cursor or adjusting values of selected parameter

7

Rotary knob for adjusting parameter or moving cursor position

8

Multifunction socket, power output

-

9 mode (voltage, protective current, frequency), quickly switch to selected mode

Lock keypad, long press 2-3s to unlock

-

Switch power factor and frequency

-

Setup keykey soundoutput delayprotocolbaud rateaddress, setting and view

-

Output/Power switch

-

Caution signit will be red sign if overload occurs

-

Switch high-low level

-

Return to last interface or exit

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1.3 Rear Panel

UAP500A/1000A

Table 1-3-1 Rear Panel No. Name

Figure 1-3-1 Rear Panel Description

1

RS232 interface External communication interface to realize remote control the power

2

Fuse

Output terminal fuse, 250V/10A

3

Fuse

Input terminal fuse, 250V/10A

4

Power socket

AC power input socket

5

Output

Power output terminal, multifunction socket

6

Ventilation hole

For dissipating heat

7

SYNC

SYNC will send pulse signal synchronously when output changes

8

Ground terminal For ground connecting

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Inspection and Installment

2.1 Packing List

Befor using the instrument 1Check whether the appearance of the product is damaged, scratched or has other defects. 2 Check whether the instrument accessories are missing according to the packing list.
If it is damaged or the accessories are missing, please contact Uni-Trend Instrument Sales Department or the distributor immediately.

Name
Programmable Variable Frequency AC Power Supply
Power Line RS232 communication Line
Back-up Fuse
User's Manual

Quantity 1 1 1 2 1

Remarks UAP500A/UAP1000Athe model is subject to the actual order.
250V/10Ainput and output terminal fuse Electronical copy, it can download from UNI-T's official website

2.2 Power Requirements

UAP500A/1000A can only be used in following conditions

Parameter

Requirements

Voltage

AC 220±10% V

or AC 110±10% V

Frequency

50/60Hz

Fuse

Input voltage250V/10A Output voltage250V/10A

 Three-core power cord is provided. Please make sure that the ground wire of three-phase socket is properly grounded before use.
 250V/10A fuse is selected and installed for the instrument.  The instrument with two spare fuses.  When replacing the fuse, please remove the external power cord first, then open the fuse slot under
the power interface, take out the old fuse and replace it with a new one, and install the fuse slot back after completion.
WarningPlease do not use the damaged power cord to avoid danger.

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2.3 Operating Environment

UAP500A/1000A variable AC power supply only can used in normal temperature and non-condensing environment. The following is the environmental requirements for general environment Ventilation fans speed will intelligent change with the temperature of cooling fin. The installment place should not have gases, vapors, chemical deposits, dust, dirt and other explosive and corrosive media that may seriously affect the instrument. The installment place should be free of serious vibration or bumps.

Environment Operating Environment Operating Humidity Storage Temperature Altitude Degree of Pollution

Environmental Requirements 0~40 20%~80%non-condensing -10~60 2000m II

2.4 Cleaning
To avoid electric shock, please unplug the power cord before cleaning. Clean the housing and the panel with a soft damp cloth, and make sure it is completely dry. Do not clean the interior of the instrument.
CautionDo not use solvent (alcohol or gas) to clean the interior of the instrument. Do not stuck the ventilation holes, and clean the outer shell regularly to make sure the instrument can work stably.
2.5 Packing
Original Packing Please keep all the original packing marterials to pack the instrument, if the instrument need to send back to factory for maintance. And please contact with UNI-T technical support before send it. Make sure all the accessories, such as power cord is send back and mark failure phenomenon and reasons. In addition, please indicate "fragile", "please be careful when handling it" in the package.
Other Packing If the orginal packing materials are missing, please pack the instrument as follows, 1. Use bubble bag or EPE foamto wrap the instrument 2. Put the instrument in multilayer cardboard box which can stand 150kg pressure 3. The instrument must around with shockproof marterials, thickness about 70 -100mm 4. Seal the cardboard box properly 5. Indicate "fragile", "please be careful when handling it" in the package.

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3. Measurement Display
3.1 Power On
Turn on the variable AC power supply properly and inspecting it as follows, 1. Connect the power cable correctly, press the power button on the front panel to active the instrument.
Press On/Off, Caution, High/Low key, screen will be display "INIT" and self-test progress bar.
2. After initialization, screen will display the current state. The completion of the correct power-on self-test indicates that the instrument meets the factory standards and it can be used normally by the user.
Caution  Before operating the variable AC power supply, please read safety information carefully. WarningPlease make sure power voltage is matched with supply voltage, otherwise it may cause damage to the instrument.
Please make sure the mian power plug insert into the protective ground power socket, do not use a patch panel without a protective ground.
3.2 Introduction of Screen Display
Enter measuring mode, VA screen will display as follows,

Figure 3-2 Measurement Display
3.2.1 Operating Indicator
UAP500A/1000A variable AC power supply has On/Off key with output indicator. Press On/Off key, indicator becomes green which means output is enabled; press On/Off key again to disable the output and indicator will also be off. High/Low key with indicator. Press High/Low key, indicator becomes blue which means in high mode; press High/Low key again to switch high to low mode and the indicator will be off; 0-150V is low mode, 150V-300V is high mode. Press the High/Low key to switch low to high mode, and the indicator should be blue before setup.

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Measurement Setup
This section
is to introduce the main function of the variable frequency AC power, for user to learn more about how to operating the instrument.
4.1 Parameter Setup
4.1.1 Output Voltage Pressrotary knoborV Set, voltage value start to blink and then to enter voltage setup Press right and left direction key to select the required and specific digit; Rotaterotary knobto set the required voltage value, pressOKorrotary knobto confirm the voltage setting.
Note0-150V is low level, 150V-300V is high level. When the setting is low level, press the High/Low key to switch low to high level, and the indicator should be blue and then set voltage value of high level. 4.1.2 Protective Current Pressrotary knobor V Setcurrent value start to blink, press low direction to enter current setup; press right and left direction key to select the required and specific digit; Rotaterotary knobto set the required current value, pressOKorrotary knobto confirm the voltage setting. NoteIn output mode, when tested current exceed the protective current, power will decrease voltage output till output is disabled.
4.1.3 Output Frequency PressF Setfrequency value start to blink and then to enter frequency setup; Press right and left direction key to select the required and specific digit; Rotaterotary knobto set the required voltage value, pressOKorrotary knobto confirm the voltage setting. In addition, press50Hzor60Hzbutton can set frequency to 50Hz or 60Hz directly. 4.1.4 Output Set setting the above parameters, connect the load, pressOn/Offkey, indicator becomes green, press On/Offkey again, turn off output and indicator will also be off.
4.1.5 Mode Selection PressModeuse up/down direction key to select the required mode, pressOKto use the parameter of the current mode.

4.2 Mode Setup

4.2.1 Parameter of Mode Press Modekey as shown in the figure below, M1 appears on the screen, select the mode which need to set

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the parameters M1-M9 by using the up/down direction key; Take M1 as an example, long pressModekey till the voltage value and M1 start to blink to enter the setting mode, it can set the output voltage and frequency, protective current as 4.1 parameter setup, pressOK orrotary knobto keep the setting.
NoteIf there are three parameters should be set, do not press OKorrotary knob key after setting the voltage, use up/downdirection keykey to select and set the next parameter, it can complete the setting of the three parameters in succession.

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System Setup
This section is to introduce the system function of the variable frequency AC power, which includes the following contents:
5.1 System
Press Setupkey on the panel and then enter <System Setup> page.
5.1.1 Key Sound PressSetupkey will display the following interface, OFF presents turn off key sound, ON presents turn on key sound. Key sound can also changed by direction key or rotary knob.

5.1.2 Output Delay PressSetupkey twice to enter output delay interface, use numeric keypad or rotary knob to set time, pressOKor rotary knob to confirm the setting.
5.1.3 Protocol
PressSetupkey three times to enter protocol interface, use rotary knob or up/down direction key to change the setting, pressOKor rotary knob to confirm the setting This varaiable frequency AC power supply prvoides SCPI and MODBUS protocol 0 presents communication closed, 1 presents SCPI protocol, 2 presents MODBUS protocol.

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5.1.4 Baud Rate PressSetupkey four time to enter baud rate interface, use rotary knob or up/down direction key to change the setting, pressOKor rotary knob to confirm the setting; Baud Rate has 4800, 9600, 19200 and 38400 to choose.
5.1.5 Address PressSetupkey five times to enter address interface, use rotary knob or up/down direction key to change the setting, pressOKor rotary knob to confirm the setting; This setting is only for MODBUS protocoladdress is available for 1-250.

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Introduction of Communication Interface and Terminal
This section is to introduce the communication interface of the variable frequency AC power supply, which includes the following contents:

6.1 RS-232C

UAP500A/1000A varaiable AC power supply has a DB9 main connector at the end, which can be connected to the COM port of a computer using the RS-232 standard communication cable. It can realize remote control.
Note: In actual use, the varaiable AC power supply only uses three of the pins 2.3.5 to communicate with the instrument.
It is recommended that to avoid electrical shocks, please turn off the instrument power when plugging and unplugging the connector.

Table 6-1 Pin Definition of COM InterfaceRS232

Pin No. 1 2 3

Symbol --TXD RXD

Description Vacant Send data Receive data

RS-232 Connect Terminal

4

---

5

GND

Vacant Signal ground

6

---

Vacant

7

---

Vacant

8

---

Vacant

9

---

Vacant

Communication settings are mainly used to set the communication method between the varaiable frequency AC power supply and the host computer. The varaiable frequency AC power supply communicates with the host computer through RS232. Before connecting to the host computer, please make sure that the corresponding communication parameters are selected in the system settings, taking the SCPI protocol as an example:

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Communication Setup Setting

Description

Protocol

1

Set communication mode to SCPI protocol

BaudRate

4800/9600/19200/38400

Set the baud rate of RS232
Notestandard upper computer is only available for baud rate 4800 and above

NoteFor secondary development, refer to SCPI protocol and MODE BUS protocol in the document "UAP500A/1000A Programming Manual".

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Technical Index
This section includes:  Main Technical Index  Matters of Calibrating Parameter

Table 7-1 Main Technical Index of UAP500A/1000A

Model

UAP500A

UAP1000A

Capacity

500VA

1KVA

Modulating Mode

SPWM(sine wave pulse modulation)

INPUT Phase

12W

Voltage

220V±10%

Frequency

47Hz - 63Hz

OUTPUT Phase

12W

Voltage

0-150VAC/0-300VAC AUTO

Frequency

45-250Hz(0.01Step)

Maximum

L=120V

4.2A

8.4A

Current

H=240V 2.1A

4.2A

Load Regulation

1%

T.H.D

3%(low level 120V,high level240V, with resistive load)

Frequency Stability

0.01%

Display

Voltage Vrms, Current Arms, Frequency Fre, Power Wattage, Power FactorPF

Voltage Resolution

0.01V

Frequency Resolution

0.01Hz

Current Resolution

0.001A

Memory

M1~M9(V_F_A

Voltage

Measurement Current

Accuracy

Frequency

Power

Voltage Setup Accuracy
Frequency

±0.5%FS+5dgt ±0.5%FS+5dgt ±0.01%FS+5dgt ±0.5%FS+5dgt ±1%FS ±0.1%FS

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Accuracy of Power Factor Communication Interface
Cut-off current
Output Protection Weight(Kg) Full Container Loadkg Size W×H×D(mm) Operating Environment

±(0.4 reading+0.1%FS) RS232C 0-Max Currentmaximum currentmaximum capacity/240V that is

P/240

Over Current Over Temp Over Load Short Circuit Warning

17.5kg

20.7kg

21.1kg

24.3kg

430×132×483 0-40 20-80%RH

Remark Environment requirement of accuracy: 23±5 degree Guarantee period of accuracy: one year Recommended calibration frequency: 1 time/year

20%-80%RH.

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References

Microsoft Word 2013