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twintex PWD Series Operation Manual

Single output high power dc power supply
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Single Output High Power
DC Power Supply
Operation Manual V1.0

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Summary of Contents for twintex PWD Series

  • Page 1 Single Output High Power DC Power Supply Operation Manual V1.0...

  • Page 2: Table Of Contents

    CONTENTS SAFETY INSTRUCTION ..........................III 1. PRODUCT INTRODUCTION ........................- 1 - 1.1 Description ..........................- 1 - 1.2 Features ........................... - 1 - 1.2 List of Models ........................... - 2 - 2. GENERAL KNOWLEDGE ......................... - 4 - 2.1 CC and CV Mode ........................- 4 - 2.2 Application of Capacitive Load ....................
  • Page 3 Use of Operation Manual Please read through and understand this Operation Manual before operating the product. After reading, always keep the manual nearby so that you may refer to it as needed. When moving the product to another location, be sure to bring the manual as well.

  • Page 4: Safety Instruction

    SAFETY INSTRUCTION This chapter contains important safety instructions that you must follow when operating the instrument and when keeping it in storage. Read the following before any operation to insure your safety and to keep the best condition for the instrument. Safety Symbols The following safety symbols may appear in this manual or on the instrument: Identifies conditions or practices that could result in injury or loss of life.
  • Page 5  Do not use the power supply in an atmosphere which contains sulfuric acid mist or other substances which cause corrosion to metal.  Do not use the power supply in a dusty place or a highly humid place as such will cause power supply reliability degradation and instrument failures.

  • Page 6: Product Introduction

    Over Voltage Protection, Over Current Protection and Over Temperature Protection keep the PWS series and their load safe from unexpected conditions. For more complicated applications, the PWD series are available with many optional functions: remote sensing, remote ON/OFF control, timer switch, square waveform output, PV curve output, etc.

  • Page 7: List Of Models

    1.2 List of Models 1.8kW Series Model Output voltage Output current Rated power Size Input volage PWS30-60 0~30V 0~60A 1.8kW 1/2 1U 1P 220V PWSS60-30 0~60V 0~30A 1.8kW 1/2 1U 1P 220V PWS100-18 0~100V 0~18A 1.8kW 1/2 1U 1P 220V PWS300-6 0~300V 0~6A...
  • Page 8 12kW Series Model Output voltage Output current Rated power Size Input volage PWS20-600 0~20V 0~600A 12kW 3P 380V PWS30-400 0~30V 0~400A 12kW 3P 380V PWSS60-200 0~60V 0~200A 12kW 3P 380V PWS100-120 0~100V 0~120A 12kW 3P 380V PWS300-40 0~300V 0~40A 12kW 3P 380V PWS600-20 0~600V...

  • Page 9: General Knowledge

    2. GENERAL KNOWLEDGE 2.1 CC and CV Mode The DC power supply is to supply voltage and current in constant voltage (CV) or constant current (CC) mode within the rated output range. The working characteristics of these series Power Supplies is called a constant voltage/constant current automatic cross-over type.

  • Page 10: Application Of Capacitive Load

    2.2 Application of Capacitive Load When the power supply is connected to a big capacitive load, it always causes increase to the output voltage in a power supply. The output voltage may make fast increase to the Over Voltage Protection point. It may also cause slow decrease when the output voltage is turned down.

  • Page 11: Application Of Battery Load

    2.4 Application of Battery Load When use the power supply to charge a battery, such as accumulator and ni-mh battery, the recommended protection measures is to connect a diode between the power supply and the battery. When the output electrolytic capacitor of the power supply is charged, connecting a load (battery) may cause sparks.

  • Page 12: Application Of Load With Reverse Polarity Current

    2.6 Application of Load with Reverse Polarity Current When the power supply is connected to a load that will cause reverse polarity current to the power supply output, the output voltage will increase, because the power supply cannot absorb the reverse polarity current from the load.

  • Page 13: Installation And Connection

    3. INSTALLATION AND CONNECTION 3.1 Installation When the power supply is working, heat will be generated. The power supply should be placed in a well-ventilated environment, and avoid places with high heat dissipation, high humidity and dust. Please arrange appropriate installation space according to the size of the power supply. The front and back of the power supply should have good ventilation conditions, and avoid overlapping with other products.
  • Page 14 Table 3-1 Suggested Cable Wire Diameter Input Cable Wire diameter (mm Output Cable Output Current Rated power Wire diameter 1 phase 220Vac input 3 phase 380Vac input —— —— 12KW 20KW —— 30KW —— 60KW —— 100KW —— 150KW —— 200KW ——...

  • Page 15: Panel Introduction

    4. PANEL INTRODUCTION 4.1 Front Panel Fig.4-1 Front panel Power switch Function keys Display meter Adjustment knob 4.1.1 Function Keys Fig.4-2 Key pad Name Description V-set Press this key to enter output voltage setup mode. I-set Press this key to enter output current setup mode. Preset Press this key to enter or exit preset voltage/current mode.
  • Page 16 4.1.2 Display Meter Fig.4-3 Display meter Name Description Voltmeter: display the output voltage. Voltage value is Volt (V). Ammeter: displays the output current. Current value unit is Amp (A). CV indicator: “CV” appears when the power supply is under constant voltage operation mode.

  • Page 17: Rear Panel

    4.2 Rear Panel Fig.4-4 Rear panel of 1/2 1U cabinet Fig.4-5 Rear panel of 2U cabinet Name Description Output terminals Positive polarity output terminal (Red). Negative polarity output terminal (Black). Sense Remote sense interface (optional) System Bus System bus interface (optional) RS485 RS485 interface RS232...

  • Page 18: Operation Instruction

    5. OPERATION INSTRUCTION 5.1 Power On 1. Before power on: Make sure the input voltage is in compliance with rated input. And make sure of correct connection. DO NOT connect any load to the power supply in this preparation operation. 2.

  • Page 19: Set Output Current

    4. After output is on, OUTPUT indicator appears. The CV or CC indicator appears according to load condition. 5. As shown in Fig.5-4, there is an underscore in the voltage value. It means that the voltage value is under setup mode.

  • Page 20: Preset Voltage And Current

    5.4 Preset Voltage and Current The power supply has preset voltage and current function. Under output ON mode, use this function to preset voltage and current to achieve a step change on voltage and current. 1. Press V-set key and then press PRESET key to enter preset voltage mode (refer to Fig.5-8). An underscore beneath voltage value and the PRESET icon appear at the same time.

  • Page 21: Set Ovp And Ocp Limits

    5.5 Set OVP and OCP Limits The over voltage protection (OVP) limit and over current protection (OCP) limit can be set to meet different test purposes. 1. Press OV-set or OI-set key to enter OVP or OCP limit setup mode (refer to Fig.5-9 AND Fig.5-10). 2.

  • Page 22: Lock Front Panel

    5.6 Lock Front Panel The power supply provides front panel lock function to avoid wrong operation. Press LOCK key on front panel. “LOCK” indicator appears on display meter (refer to Fig.5-13), indicating that the front panel operation is locked. Output is going on. Press OUTPUT [4] button; the output can be turned off but cannot be turned on again.

  • Page 23: Remote Sensing Operation (Optional)

    5.9 Remote Sensing Operation (Optional) The remote sensing function is an optional function. If the power supply is made with remote sensing terminals, user can ready voltage on the load accurately. Refer to below figure to connect the load to remote sensing terminals.

  • Page 24: Remote Control

    6. REMOTE CONTROL The power supply is equipped with RS-232 and RS-485 interfaces, supporting Modbus protocols. There is PC software to facilitate remote control by PC. User can choose RS-232 or RS-485 interface for communication. 6.1 RS-232 / 485 Interface Definition (1U Frame) Pin out of the RS-232 interfaces are given as below.

  • Page 25: Set Baud Rate And Address

    6.3 Set Baud Rate and Address 1. Set baud rate 1) Press BAUD key to enter baud rate setup mode (refer to Fig.6-1) 2) Baud rate can be selected from below range by tuning the adjustment knob: 1200; 2400; 4800; 9600; 14400; 19200; 38400; 43000; 57600; 115200 Baud rate is default at 9600.

  • Page 26: Command Format

    6.5 Command Format Control Command Format (commands from PC to power supply) bit: ID number of the DC power supply, 1-16 (when the ID number is 0, all ID numbers of the MCU board will response.) bit: control command bit: data length Data bit: 16-bit data, high bit in the front CRC check bit: MODBUS format, low bit in the front Feedback Data Format (commands from power supply to PC)
  • Page 27 6.6.3 Read Output Voltage Value Control command: Function Code Address of First Register Numbers of Registers CRC Check Code 0064 0001 7015 Feedback data: Function Code Bytes Output Voltage CRC Check Code 0283 F9F1 Voltage: 0x0283 into decimal system is 643. 643 divide by 10 (1 decimal point) is 64.3, then we get voltage value 64.3V.

  • Page 28: Complete Command Frame

    6.6.7 Set Output Voltage and Current Value Control command: Function Code Address of Numbers of Bytes Voltage Current CRC Check Code First Register Registers 0095 0002 0190 01F4 3B3A Feedback data: Function Code Address of First Register Numbers of Registers CRC Check Code 0095 0002...
  • Page 29 6.7.2 Register Definition Input Register Address Address Function Code Type Description Target (Decimal) (Hex) 04 (Read) √ Read Output voltage (feedback value) 0x0064 Byte √ Read Output current (feedback value) 0x0065 Byte √ Read Rated voltage 0x0067 Byte √ Read Rated current 0x0068 Byte...
  • Page 30 Remarks*1: Baud rate available: 1200; 2400; 4800; 9600; 14400; 19200; 38400; 43000; 57600; 115200. Due to the limitation of the single register data range (0~65535), the baud rate must be divided by 10 when setting, that is, remove the last 0 and then write it. Cautions: To ensure stable communication operation, default baud rate is set to 9600 in the factory.

  • Page 31: Maintenance

    7. MAINTENANCE The following instructions are for use by qualified personnel only. To avoid electrical shock, do not perform any servicing other than contained in the operating instructions unless you are qualified to do so. 7.1 Inspection 1. Inspect the instrument at regular intervals so that it maintains its initial performance for a long time. 2.

  • Page 32: Trouble Shooting

    7.3 Trouble Shooting Problem The power supply cannot startup. (No display) Solution 1. Ensure the power supply or power cord is working properly. 2. Check the fuse. If the fuse is blown, disconnect the unit from the power supply. And then replace with a new fuse of identical rating.

  • Page 33: Specifications

    8. SPECIFICATIONS Working mode IGBT ≤0.1%FS rms Voltage Line regulation ≤0.1%FS rms Current ≤0.1%FS rms Voltage Load regulation ≤0.1%FS rms Current ≤0.3%FS+50mVrms Ripple & Noise Voltage ≤0.3%FS+10mArms (20Hz~20MHz) Current ≤0.5%FS rms Voltage Time drift ≤1%FS rms Current ≤0.1%FS rms/℃ Voltage Temperature drift ≤0.3%FS rms/℃...
  • Page 34 Model Rated Output Resolution Ripple & Noise Setting Accuracy (1800W) Power (20Hz~20MHz) ≤0.1% FS +20mV PWS30-60 0~30V 0~60A 1.8kW 0.01V 0.01A ≤0.3% FS +10mA ≤0.1% FS +20mV 0~60V 0~30A 1.8kW 0.01V 0.01A PWS60-30 ≤0.3% FS +10mA ≤0.1% FS +20mV 0~100V 0~18A 1.8kW 0.1V...
  • Page 35 Model Rated Output Resolution Ripple & Noise Setting Accuracy (6kW) Power (20Hz~20MHz) ≤0.1% FS +20mV PWS20-300 0~20V 0~300A 0.01V 0.1A ≤0.3% FS +10mA ≤0.1% FS +20mV 0~30V 0~200A 0.01V 0.1A PWS30-200 ≤0.3% FS +10mA ≤0.1% FS +20mV 0~60V 0~100A 0.01V 0.01A PWS60-100 ≤0.3% FS +10mA...
  • Page 36 Model Rated Output Resolution Ripple & Noise Setting Accuracy (15kW) Power (20Hz~20MHz) ≤0.1% FS +20mV PWS60-250 0~60V 0~250A 15kW 0.01V 0.1A ≤0.3% FS +10mA ≤0.1% FS +20mV 0~50V 0~300A 15kW 0.01V 0.1A PWS50-300 ≤0.3% FS +10mA ≤0.1% FS +20mV 0~100V 0~150A 15kW 0.1V...

  • Page 37: Dimentional Drawings

    9. DIMENTIONAL DRAWINGS - 32 -...
  • Page 38 Twintex Electronics Co., Ltd Add.: 702, #16-21, Block B, Sanhehuaqiao Village, Dalang Sub-district, Longhua District, Shenzhen, China 518109 Tel: +86-755-28129890 Fax: +86-755-28149802 Web: www.twintex.com.tw...

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