TEXIO PW8-3AQP Instruction Manual
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TEXIO PW8-3AQP Instruction Manual

Pw-a series multi-output dc stabilized power supply units
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PW-A SERIES MULTI-OUTPUT DC STABILIZED
POWER SUPPLY UNITS
PW-A SERIES
PW8-3AQP
PW16-2ATP
PW18-1.8AQ PW18-2ATP
PW18-3ADP
PW36-1.5AD PW36-1.5ADP
OPTIONAL INTERFACE UNITS FOR
IF-41RS
© PRINTED IN JAPAN
INSTRUCTION MANUAL
PW8-3ATP
PW16-5ADP
PW24-1.5AQ PW26-1AT(S)
PW-A SERIES
IF-41GU
B68-0014-00
PW8-5ADPS
PW18-1.3AT(S)
PW18-3AD
IF-41USB

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Summary of Contents for TEXIO PW8-3AQP

  • Page 1 INSTRUCTION MANUAL PW-A SERIES MULTI-OUTPUT DC STABILIZED POWER SUPPLY UNITS PW-A SERIES PW8-3AQP PW8-3ATP PW8-5ADPS PW16-2ATP PW16-5ADP PW18-1.3AT(S) PW18-1.8AQ PW18-2ATP PW18-3AD PW18-3ADP PW24-1.5AQ PW26-1AT(S) PW36-1.5AD PW36-1.5ADP OPTIONAL INTERFACE UNITS FOR PW-A SERIES IF-41RS IF-41GU IF-41USB © PRINTED IN JAPAN B68-0014-00...

  • Page 3: Table Of Contents

    CONTENTS USING THE PRODUCT SAFELY.......................Ⅰ-Ⅳ 1. PW-A SERIES ..........................1 1-1. About This Manual .........................1 1-2. Outline of Product ..........................1 1-3. Features ............................1 1-3-1. PW-A power supply unit ......................1 1-3-2. IF-41RS（Option） ........................2 1-3-3. IF-41GU（Option） ........................2 1-3-4. IF-41USB（Option） ........................2 1-4. Accessories ...........................2 2.
  • Page 4 6-2-1. Method of turning on or off the output with the MAIN OUTPUT key........32 6-2-2. Method of turning on or off the output with the OUTPUT SELECT key.........32 6-3. Delay Functions ...........................32 6-3-1. Setting delay continue ON/OFF ....................33 6-3-2. Setting normal delay/reverse delay with output off..............33 6-3-3.
  • Page 5 9-2-3. Connecting IF-41GU/IF-41USB local bus ................51 9-3. Setting Addresses........................52 9-3-1. Addresses ..........................52 9-3-2. Setting addresses .........................52 9-3-3. Address setting range and set value..................52 9-4. Transmission and Reception Procedures Using IF-41RS (without using GP-620) ......53 9-4-1. Message structure ........................54 9-4-2. Precautions for sending or receiving message ..............56 9-4-3.
  • Page 6 9-7-23. Sending all preset values (Response to the ST1 command) ..........69 9-7-24. Sending all equipment statuses (Response to the ST2 command) ........70 9-7-25. Sending ID data (Response to the ST3 command) ............71 9-7-26. Sending output voltage, output current or operation mode (Response to the ST4 command) ..71 9-7-27.

  • Page 7: Using The Product Safely

    USING THE PRODUCT SAFELY ■ Preface To use the product safely, read this user's guide to the end. Before using this product, understand how to correctly use it. If you read this manual but you do not understand how to use it, call the company or each sales office that is indicated on the back cover of this user's guide.
  • Page 8 USING THE PRODUCT SAFELY WARNING ■ Do not remove the product's covers and panels Never remove the product's covers and panels for any purpose. Otherwise, the user's electric shock or a fire may be incurred. ■ Warning on using the product The warning items given below are to avoid danger to the user's body and life and avoid the damage and deterioration of the product.
  • Page 9 USING THE PRODUCT SAFELY CAUTION ■ Caution about Installation Condition - If this product is used in a place with much electrical noises, it may malfunction. Be sure to ground this product using the GND terminal of the 3-core power cable or the GND lead wire of a 3P-2P conversion plug, if used, when it is necessary to use this product in a place with much electrical noises.
  • Page 10 USING THE PRODUCT SAFELY CAUTION ■ Input/output terminal Maximum input to the input terminals is specified to prevent the product from being damaged. Do not supply input, exceeding the specifications that are indicated in the "Rating" or "Caution on use" column in the user's guide of the product. Otherwise, a product failure is caused. Also, do not supply power to the output terminals from the outside.

  • Page 11: Pw-A Series

    Note： The IF-41 series are compatible with all models of the PW-A power supply unit series shown above. The previous IF-40 series are not compatible with the PW8-3AQP, PW16-2ATP, PW8-5ADPS and PW24-1.5AQ. Use the IF-41 series, not IF-40 series, for the PW8-3AQP, PW16-2ATP, PW8-5ADPS and PW24-1.5AQ. “YB” models with built-in factory options 1-2.

  • Page 12: If-41Rs（Option

    1-3-2. IF-41RS（Option） - The PW-A power supply unit with a built-in IF-41RS is possible to remote-control when it is connected with a computer by RS-232C. The computer controlling the PW-A power supply unit is called the master unit, and the controlled PW-A power supply unit is called the slave unit. It is possible to connect a maximum of four slave units, which are connected with one another with modular cables.

  • Page 13: Specifications

    2. SPECIFICATIONS Specifications of PW18-1.8AQ Item A Channel B Channel C Channel D Channel Output voltage 0V to +18V 0V to -18V 0V to +8V 0V to -6V Voltage setting 10mV resolution ±（0.5%SET+20mV） ±（0.5%SET+5mV） Voltage setting accuracy 23℃±5℃、after 30-minute aging Output current 0A to +1.8A 0A to -1.8A...
  • Page 14 Specifications of PW18-1.3AT(S) C channel of ATS with Remote sensing terminals. Item A Channel B Channel C Channel Output voltage 0V to +18V 0V to -18V 0V to+6V Voltage setting 10mV resolution ±（0.5%SET+20m V） ±(0.5%SET+5mV) Voltage setting accuracy At 23℃±5℃、after 30-minute aging Output current 0A to +1.3A 0A to -1.3A...
  • Page 15 Specifications of PW18-3AD Item A Channel B Channel Output voltage 0V to +18V 0V to -18V Voltage setting 10mV resolution ±（0.5%SET+20mV） Voltage setting accuracy At 23℃±5℃、after 30-minute aging Output current 0A to +3A 0A to -3A Current setting resolution ±(1%SET+5mA) Current setting accuracy At 23℃±5℃、after 30-minute aging...
  • Page 16 Specifications of PW36-1.5AD Item A Channel B Channel Output voltage 0V to +36V 0V to -36V Voltage setting 10mV resolution ±（0.5%SET+20mV） Voltage setting accuracy At 23℃±5℃、after 30-minute aging Output current 0A to +1.5A 0A to -1.5A Current setting resolution ±(1%SET+5mA) Current setting accuracy At 23℃±5℃、after 30-minute aging...
  • Page 17 Specifications of PW18-3ADP Item A Channel B Channel Output voltage 0V to +18V 0V to +18V Voltage setting 10mV resolution ±（0.5%SET+20mV） Voltage setting accuracy At 23℃±5℃、after 30-minute aging Output current 0A to +3A 0A to +3A Current setting resolution ±(1%SET+5mA) Current setting accuracy At 23℃±5℃、after 30-minute aging...
  • Page 18 Specifications of PW18-2ATP Item A Channel B Channel C Channel Output voltage 0V to +36V 0V to +18V 0V to +8V Voltage setting 10mV resolution ±（0.5%SET+20mV） ±（0.5%SET+5mV） Voltage setting accuracy At 23℃±5℃、after 30-minute aging Output current 0A to +1A 0A to +2A 0A to +2A Current setting resolution...
  • Page 19 Specifications of PW16-5ADP Item A Channel B Channel Output voltage 0V to +6V 0V to+16V Voltage setting 10mV resolution ±（0.5%SET+5mV） ±（0.5%SET+20mV） Voltage setting accuracy At 23℃±5℃、after 30-minute aging Output current 0A to +3A 0A to +5A Current setting resolution ±（1%SET+5mA） Current setting accuracy At 23℃±5℃、after 30-minute aging...
  • Page 20 Specifications of PW8-3ATP Item A Channel B Channel C Channel Output voltage 0V to +8V 0V to +8V 0V to +18V Voltage setting 10mV resolution ±（0.5%SET+5mV） ±（0.5%SET+20mV） Voltage setting accuracy At 23℃±5℃、after 30-minute aging Output current 0A to +3A 0A to +3A 0A to +1.5A Current setting resolution...
  • Page 21 Specifications of PW26-1AT(S) C channel of ATS with Remote sensing terminals. Item A Channel B Channel C Channel Output voltage 0V to +26V 0V to -26V 0V to +6V Voltage setting 10mV resolution ±（0.5%SET+20mV） ±(0.5%SET+5mV) Voltage setting accuracy At 23℃±5℃、after 30-minute aging Output current 0A to +1A 0A to -1A...
  • Page 22 Specifications of PW36-1.5ADP Item A Channel B Channel Output voltage 0V to +36V 0V to +36V Voltage setting 10mV resolution ±（0.5%SET+20mV） Voltage setting accuracy At 23℃±5℃、after 30-minute aging Output current 0A to +1.5A 0A to +1.5A Current setting resolution ±(1%SET+5mA) Current setting accuracy At 23℃±5℃、after 30-minute aging...
  • Page 23 Specifications of PW8-3AQP Item A Channel B Channel C Channel D Channel Output voltage 0V to +8V Voltage setting resolution ±（0.5%SET+5mV） Voltage setting accuracy At 23℃±5℃、after 30-minute aging Output current 0 to +3A Current setting resolution ±（1%SET+5mA） Current setting accuracy At 23℃±5℃、after 30-minute aging...
  • Page 24 Specifications of PW16-2ATP Item A Channel B Channel C Channel Output voltage 0V to +16V Voltage setting 10mV resolution ±（0.5%SET+20mV） Voltage setting accuracy At 23℃±5℃、after 30-minute aging Output current 0A to +2A 0A to +2.5A Current setting resolution ±（1%SET+5mA） Current setting accuracy At 23℃±5℃、after 30-minute aging CV characteristics...
  • Page 25 Specifications of PW8-5ADPS Item A Channel B Channel Output voltage 0V to +8V Voltage setting resolution ±（0.5%SET+5mV） Voltage setting accuracy At 23℃±5℃、after 30-minute aging Output current 0A to +5A Current setting resolution ±（1%SET+5mA） Current setting accuracy At 23℃±5℃、after 30-minute aging CV characteristics Input variation (For ±10% variation of source voltage)
  • Page 26 Specifications of PW24-1.5AQ Item A Channel B Channel C Channel D Channel Output voltage 0V to +24V 0V to -24V 0V to +8V Voltage setting 10mV resolution ±（0.5%SET+20mV） ±（0.5%SET+5mV） Voltage setting accuracy At 23℃±5℃、after 30-minute aging Output current 0A to +1.5A 0A to -1.5A 0A to +2A Current setting...
  • Page 27 Common Specifications of PW-A Series Item Rating Set delay time 0.0second to 10.0seconds Described in PANELS and FUNCTIONS AND Functions OPERATION PROCEDURES. Grounding Positive, COM or negative grounding is possible. MAIN OUTPUT key is turned off if exhaust air temperature Protection becomes too high.
  • Page 28 Communication Specifications of IF-41RS <Local bus (PW bus)> (IN/OUT pin 3 of connector J1) Data transmission rate 9600 bps, error: 5% or less Start bit 1 [bit] Data bit 7 [bit] Data code structure Parity bit 1 [bit] Stop bit 1 [bit] Parity Even parity...

  • Page 29: Instructions On Use

    3. INSTRUCTIONS ON USE 3-1. Checking Source Voltage ・ Use the PW-A series power supply units in the rated source voltage range. ・ The rated source voltage of the PW-A series power supply unit is AC100V, 115V, 120V, 200V, 220V or 230V (voltage fluctuation: ±10%), single-phase, 50Hz or 60 Hz. ・...

  • Page 30: Panels

    4. PANELS 4-1. Front Panel Fig. 1 Front Panel NOTE: The above figure shows the front panel of the PW18-1.8AQ. □ 1 Voltage indicator (4-digit red LEDs) ・ Indicates the set voltage, output voltage, tracking voltage percentage (%), delay time, PC address, system address, and software versions of the PW-A series and IF-41GU, IF-41USB or IF-41RS (option).
  • Page 31 □ 3 KEY LOCK/LOCAL key (Green) ・ Changes the key lock state (with the LED on) into the local state (with the LED off), and vice versa. ※ For the operation procedures, see section "6-6. Usage of KEY LOCK/LOCAL key" below. □...
  • Page 32 □ 13 DISPLAY/STATUS keys (Orange, green and red) ・ There are as many keys as the channel. The values indicated above the keys show the rated output voltages. (1) Display function □ ・ Selects which set (output) voltage and current to display on the voltage indicator 1 and □...

  • Page 33: Rear Panel

    4-2. Rear Panel Fig. 2 Rear Panel □ 23 Optional board mounting section ・ The optional remote control board is mounted in this section. ・ The PW-A power supply unit is supplied with a dummy panel mounted here if it incorporates no optional board.

  • Page 34: Bottom Plate

    4-3. Bottom Plate Front panel Fig. 3 Bottom Plate □ 29 AC source voltage selector switches 1 and 4 ・ These switches change the voltage of AC power source: 100V, 115V, 200V or 230V. ※ For the procedures of changing the AC source voltage, see section "5-4 Changing Source Voltage"...

  • Page 35: General Instructions

    5. GENERAL INSTRUCTIONS 5-1. Output Terminals of Each Channels and Key Switches The numbers of the OUTPUT SELECT keys, DISPLAY/STATUS keys and output terminals differ with the models. See Fig.4 for the positions. See Table 1 for the difference of the models. OUTPUT SELECT DISPLAY/STATUS（G+％/R－％）...
  • Page 36 – – PW26-1AT(S) ○ ○ ○ ○ – – PW36-1.5ADP – – ○ ○ ○ ○ ○ ○ ○ ○ PW8-3AQP ○ ○ ○ ○ ○ ○ – – PW16-2ATP ○ ○ ○ ○ – – PW8-5ADPS – – ○...

  • Page 37: Turning On Power

    The ID number of the PW-A power supply unit is displayed. Model name Model name PW18-1.8AQ PW8-3ATP PW18-1.3AT(S) PW26-1AT(S) ID number PW18-3AD PW36-1.5ADP PW36-1.5AD PW8-3AQP PW18-3ADP PW16-2ATP PW18-2ATP PW8-5ADPS PW16-5ADP PW24-1.5AQ The program version number of the PW-A power supply … unit is displayed. …...

  • Page 38: Initial Setting When Power Os Turned On

    5-2-2. Initial setting when power is turned on ・ The default setting and the setting after initializing the memory are as shown below. ・ The setting that may be stored using the memory functions shown in “6-5” and the MW1 command shown in “9-7-18”...

  • Page 39: Changing Souce Voltage

    2. Select the intended source voltage with the switches on the bottom plate of the unit. (See Fig.6) 3. Take out the fuse from the fuse holder on the rear panel. Replace it with an appropriate fuse. (See Fig.7) Fuse rating Source voltage SWITCH POSITION Other PW8-3AQP PW8-3AQP AC100V 250V 3.15A 250V 4A Time lag fuse...

  • Page 40: Connecting Loads

    5-5. Connecting Loads <Precautions> ・ Use crimp-style terminals, etc. to connect loads with the output terminals of the PW-A power supply unit firmly. ・ Use wires of sufficient current capacity for connection. ・ Be sure to shut off the MAIN OUTPUT key switch of the PW-A unit before connecting or disconnecting wires.

  • Page 41: Functions And Operation Procedures

    6. FUNCTIONS AND OPERATION PROCEDURES 6-1. Basic Operations 6-1-1. Set value and output value display ・ The set voltage and current are displayed on the voltage and current indicators when the MAIN OUTPUT key is off. The output voltage and current are displayed on the voltage and current indicators when the MAIN OUTPUT key is on.

  • Page 42: Output Functions

    6-2. Output Functions Function: When the MAIN OUTPUT key is turned on the channel with its OUTPUT SELECT LED lit is turned on. See Fig.4 for the relationship between the OUTPUT SELECT keys and output terminals. CAUTION Make sure that wires are connected with the output terminals firmly before pressing the MAIN OUTPUT key.

  • Page 43: Setting Delay Continue On/Off

    6-3-1. Setting delay continue ON/OFF Operation procedures 1. Turn off the PW-A series. 2. Throw the POWER switch while pressing the DELAY key. Keep the DELAY key depressed until “P-on” displayed on the voltage/current LEDs changes into “Idno”. It is possible to set the delay continue function when “dELY”...

  • Page 44: Turing On Output With Delay Function

    6-3-4. Turing on output with delay function Operation procedures 1. Set the delay time of a channel whose output should be turned on later. (See section “6-3-3.”.) 2. Press the OUTPUT SELECT key of the channel whose output should be turned on. The key goes on green.
  • Page 45 MAIN OUTPUT key on MAIN OUTPUT key off MAINOUTPUT key ⑤ ① Set delay time: 2 sec. A Channel voltage ⑥ ② B Channel voltage Set delay time 4 sec. ⑦ ③ Set delay time 6 sec. C Channel voltage ⑧...

  • Page 46: Tracking Function

    6-4. Tracking Function ・ The tracking function changes the current or voltage of several channels simultaneously. Two modes are available: Absolute value change mode, and percent change mode. In the absolute value change mode, the set values of channels are changed in numeric values. In the percent change mode, the set values are changed in percentage, regarding the value when tracking operation is turned on as 100%.

  • Page 47: Using Tracking Function

    6-4-3. Usage of tracking function 1. Press the TRACKING ON/OFF key. The LED of the key is lit up in green. If the percentage tracking mode is selected at this time, the voltage and current become 100% when the TRACKING ON/OFF key is pressed.

  • Page 48: Memory Function

    Rated voltage×1.025 ① The figure on the right shows the percentage +15Ｖ tracking mode operation in the same conditions as shown in Fig. 10. ③ Vo = V x a: (a) % 200％ 100％ Amount of varying V: Set value when the TRACKING ON/OFF ②...

  • Page 49: Storing Values In Preset Memory In Main Output Key On Mode

    6-5-3. Storing values in preset memory in MAIN OUTPUT key on mode Operation procedures 1. Press the LIMIT key while the MAIN OUTPUT key is on. 2. Set voltage and current are displayed on the voltage and current indicators. 3. Press the PRESET key of the preset memory whose data should be changed. The LED of some PRESET key (1 to 4) is lit.

  • Page 50: Usage Of Keylock/Local Key

    6-6. Usage of KEYLOCK/LOCAL Key Function: This function changes the mode of the PW-A power supply unit: Key lock mode, or local mode. Key lock mode (Lit in green)···· Any other keys than the KEY LOCK/LOCAL key are invalid. Local mode (Off) ···················· All keys may be operated manually. Remote mode (Lit in red) ·······...

  • Page 51: Usage Of Remote Sensing Function (Pw18-1.3Ats, Pw26-1Ats & Pw8-5Adps Only)

    6-7. Usage of Remote Sensing Function (PW18-1.3ATS, PW26-1ATS & PW8-5ADPS only) 6-7-1. Remote sensing terminals When a load is connected with the output terminals, the voltage at the terminals of the load is subject to load fluctuation due to voltage drop, which is caused by the contact resistance of the output terminals or resistance of the connected wires.

  • Page 52: External Contact Control

    7. EXTERNAL CONTACT CONTROL 7-1. Outline of Functions ・ It is possible to control the MAIN OUTPUT key and the PRESET 1 to PRESET 4 keys through the external contact control connector on the rear panel (hereinafter referred to as the connector J1). It is also possible to input an external alarm signal (for turning off the MAIN OUTPUT key forcedly) and output an alarm signal through the connector J1.

  • Page 53: Turning On/Off Main Output Key Through External Contacts

    7-3-1. Turning on/off MAIN OUTPUT key through external contacts ・ When S6 shown in Fig.14 goes active (i.e., pins 3 and 8 are short-circuited), the MAIN OUTPUT key is turned on. Note that the MAIN OUTPUT key is always active, except an alarm status, when pins 3 and 8 are short-circuited.

  • Page 54: Application Examples

    8. APPLICATION EXAMPLES 8-1. Series Output of PW18-1.8AQ (four-channel power supply unit) +18V Load Load －18V Load ＋8V Load －6V Fig.16 Complementary Connection ＋18V When outputs are connected in series, the allowable current is restricted by the rated output current. The allowable currents that may flow through the loads shown on the figure on the left are as Load Load...

  • Page 55: Series Output Of Pw18-1.3At (Three-Channel Power Supply Unit)

    8-2. Series Output of PW18-1.3AT (three-channel power supply unit) ＋18V ＋18V 0V to 36V， 0A to 1.3A Load COM1 COM1 Load Load －18V －18V ＋6V ＋6V Load Load COM2 COM2 Fig.18 Complementary Connection Fig.19 Series Connection ＋18V COM1 Load Load The allowable current that may flow through the loads A －18V and B are restricted as shown below:...

  • Page 56: Remote Control

    9. REMOTE CONTROL ・ Terms used in the descriptions below Master unit: A unit that controls the slave units. Slave units: All PW-A power supply units controlled by the master unit when the IF-41RS is used. PW-A power supply units connected with the local bus master unit through the local bus when the IF-41GU/IF-41USB is used.

  • Page 57: Remote Control Using Computer

    9-1-1. Remote control using computer ・ The slave units may be connected with the master unit in two ways as shown below. ① Connect the RS-232C connector of the computer with the connector J2 (D-sub 9-pin connector) of the PW-A unit. (A cross cable may be used. However, it is necessary to set the RS-232C flow control of the computer to "None"...

  • Page 58: Master Operation

    9-1-2. Master operation ・ If a PW-A power supply unit with a built-in IF-41RS is set to address 0 and connected as the master unit as shown in Fig.22, operations of the master unit are reflected upon four slave units. The operations shown below are reflected upon four slave units: ①...

  • Page 59: Remote Control Using Rt-63

    9-1-3. Remote control using RT-63 ・ When the RT-63 (our remote controller) is used as the master unit and the PW-A units (with the IF-41RS units built in) are connected as shown in Fig.23, it is possible to control the following operations of a maximum of four PW-A units: ①...

  • Page 60: Connecting If-41Gu/If-41Usb

    9-2. Connecting IF-41GU/IF-41USB ・ It is possible to control the PW-A power supply units using the IF-41GU through the GP-IB or USB. (IF-41USB : USB only) It is necessary to set the PC addresses and system addresses in the local bus master.

  • Page 61: Control Through Usb

    9-2-2. Control through USB ・ It is possible to connect a maximum of 32 local bus master units (except HUB) directly with a computer using USB cable. It is possible to connect a maximum of 31 slave units with each local bus master unit connected directly with the computer using two twisted pair wires.

  • Page 62: Setting Addresses

    9-3. Setting Addresses 9-3-1. Addresses ・ It is necessary to set addresses of the PW-A power supply units before starting remote control. There are two addresses: System addresses, and PC addresses. ① System address: This is an address of the PW-A power supply unit. It is necessary to assign system addresses to all PW-A power supply units to be remote-controlled using the IF-41GU, IF-41RS or IF-41USB.

  • Page 63: Transmission And Reception Procedures Using If-41Rs (Without Using Gp-620)

    <Precautions> ・ Do not assign the same system address to several slave units when the IF-41RS boards are used. ・ Do not assign the same PC address to several local bus master units when the IF-41GU/ IF-41USB boards are used. Do not assign the same system address to several slave units connected with the local bus master unit through the local bus.

  • Page 64: Message Structure

    9-4-1. Message structure ・ Write a message to be sent from the master unit to the PW-A power supply unit through the IF-41RS as shown in example 1. ・ It is possible to use multi-commands using command characters. The command separator must be ",". ・...
  • Page 65 ■ Block check characters ・ The block check characters have two bytes. The ASCII values of seven bits from the bit following the transmission control characters indicating the beginning of the message to the transmission control characters indicating the end of the message are added in binary. The value of low-order eight bits is expressed in hexadecimal and is converted into the ASCII code.

  • Page 66: Precautions For Sending Or Receiving Message

    9-4-2. Precautions for sending or receiving message ・ When the master unit sends a message to the slave unit, the slave unit sends an acknowledge or negative acknowledge to the computer. ・ When the slave unit receives a message properly, it sends the transmission control characters indicating an acknowledge and address character to the master unit.

  • Page 67: Specifying Slave Machine As Talker From Master Unit

    9-4-3. Specifying slave machine as talker from master unit ・ When the master unit sends a command requiring a response message to the slave unit and the slave unit sends an acknowledge, a message having the structure shown in example 6 is sent to the master unit.
  • Page 68 9-4-5. Message structure list when using IF-41RS ■ Using a command for controlling the slave unit ・ From the master unit to the salve unit ・ From the slave unit to the master unit ■ Using a command requiring a response message ・...

  • Page 69: Usage Of If-41Gu/Usb

    9-5-1. Usage of GPIB (IF-41GU only) ・ Recommended GP-IB controller: All GP-IB controllers made by National Instruments. The GP-IB cards of other manufacturers will offer trouble-free operations. However, TEXIO does not warrant their performances and may not provide support services in some cases.

  • Page 70: Status Bytes

    9-5-3. Status bytes ・ When a slave unit issues a message, the master unit receiving it sets the following status byte according to the message. Message from slave units Status byte CC message MS message UU message Other message If a single statement contains several messages, the status byte is that of the first message. <Example 9>...

  • Page 71: Sending Commands (Through Gp-Ib Or Usb)

    9-6. Sending Commands (through GP-IB or USB) 9-6-1. Precautions for sending commands <Precautions> ・ It is possible to send several commands in a line through the GP-IB or USB by separating them with commas (,) that serve as the separators. A single line may contain a maximum of 80 characters.

  • Page 72: Details Of Commands

    9-7. Details of Commands 9-7-1. Setting unit to be controlled ・ This command specifies a power supply unit to be controlled when the IF-41GU/IF-41USB is used. PW＊＊ ＊＊：0、1 to 32 Specify the system address of a power supply unit to be controlled. When the value of 0 is specified (broadcast specification), all power supply units connected with a specified local bus master are controlled.

  • Page 73: Activating Or Deactivating Tracking Function

    <Precautions> ・ Input an absolute value without the negative sign in the place of ＊＊＊＊ to change the channel of negative output. ・ Some models do not have C channel and D channel. If a command for controlling the C channel or D channel is sent to such a model, the command is invalid.

  • Page 74: Setting Tracking Voltage/Current

    9-7-6. Setting tracking voltage/current ・ The commands shown below determine the variation of the voltage and current values in the tracking mode. Target output of tracking Voltage variation Current variation function EA ＊＊＊＊ IA ＊＊＊＊ Output A EB ＊＊＊＊ IB ＊＊＊＊ Output B EC ＊＊＊＊...

  • Page 75: Main Output KeyのOn/Off

    <Precautions> ・ It is necessary to specify the tracking mode in “9-7-5.” and select outputs to be controlled in the tracking mode in “9-7-4.” before executing these commands. These commands are valid only when the tracking function is activated. ・ When the tracking voltage and current are sent to several channels using a multi-command, the sum of variances of all commands is changed at a time.

  • Page 76: Setting Output Delay Time

    9-7-10. Setting output delay time Sets the delay time of A channel : DA＊＊＊＊ Sets the delay time of B channel : DB＊＊＊＊ Sets the delay time of C channel : DC＊＊＊＊ Sets the delay time of D channel : DD＊＊＊＊ ・...

  • Page 77: Id Output Request

    9-7-14. ID output request PWID ・ The PWID command requests the information (ID) of the power supply. For the details of the returned message, see section “9-7-28.”. 9-7-15. Local setting ・ The LC1 command changes the remote mode of the PW-A unit into the local mode. 9-7-16.

  • Page 78: Storing Set Data

    9-7-18. Storing set data ・ The MW1 command stores all storable settings in the EEPROM. It takes about 15 seconds (approx 2 seconds for after Ver. 3.00 of the unit) to store data. Do not send any commands or carry out any operations until PW-A unit send "MW1" message when store data is finished. ※...

  • Page 79: Sending Output Voltage, Output Current Or Operation Mode (Response To The St0 Command)

    9-7-22. Sending output voltage, output current or operation mode (Response to the ST0 command) MS0，＊＊，＊＊＊＊，＊＊＊＊，＊＊・・・＊＊，＊＊＊＊ ・ The output voltage, output current and operation status requested by the ST0 command are sent in integer. The output voltage or output current of a non extant channel are not sent. The number of parameters differs with the number of channels.

  • Page 80: Sending All Equipment Statuses (Response To The St2 Command)

    → Set voltage of A channel in PRESET 4, set current of A channel in PRESET 4, set voltage of B channel in PRESET 4, set current of B channel in PRESET 4, set voltage of C channel in PRESET 4, set current of C channel in PRESET 4, set voltage of D channel in PRESET 4, set current of D channel in PRESET 4,...

  • Page 81: Sending Id Data (Response To The St3 Command)

    ・ Response to the PWID command NOTE: When the IF-40 series of the following model is used, “XXX” is returned as the model name. PW8-3AQP、PW16-2ATP、PW8-5ADPS、PW24-1.5AQ The model names of the PW18-1.3ATS and PW26-1ATS are PW18-1.3AT and PW26-1AT. 9-7-29. Sending address of controlled unit (IF-41GU/IF-41USB only)

  • Page 82: Sending Addresses Of All Connected Slave Units (If-41Gu/If-41Usb Only)

    9-7-30. Sending addresses of all connected slave units (IF-41GU/IF-41USB only) ・ Response to the SLV? Command SLV 　＊, ＊, ＊, ・・・ The system address of all slave units connected are displayed in order. Only SLV is sent when no units are connected. System address 1 is not returned since it is the address of the local bus master.

  • Page 83: Command List

    9-8. Command List Setting of the IF-41GU, IF-41USB or IF-41RS + GP-620 Item Default value Command page Unit to be controlled 0（Broadcast) Inquiry to the IF-41GU/IF-41USB (Valid only when the IF-41GU/IF-41USB is used) Item Send command Response command page Inquiry about controlled units PW？...

  • Page 84: Operation Failures

    10. OPERATION FAILURES ・ If the PW-A power supply unit becomes faulty, check the following matters. Phenomenon Possible cause Action Power is not turned on AC cable is not connected Connect the AC cable securely. though power switch is Or, replace the broken AC cable. securely or is broken.

  • Page 85: Outside Dimensions

    11. OUTSIDE DIMENSIONS ％ ％ 18.4...
  • Page 86 1850-1, Tsuruma, Machida-shi, Tokyo, 194-0004 Japan http://www.texio.jp/...

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