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Operating Manual Internal RS-232 Interface for XPD Series Programmable DC Power Supply RS232-XPD.
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Operating Manual for Internal RS-232 Interface for XPD 500 Watt Series Programmable DC Power Supply.
ii Operating Manual for RS-232 for XPD Series Power Supply Limited W arranty What does this warranty cover and how long does it last? This Limited W arranty is provid ed by Xantrex T echnology , Inc. (“Xantrex”) and covers defects in workmanship and materials in your RS-232 Interface Card .
Release 1.2 iii Direct returns may be performed accordi ng to the Xantrex Return Material Authorization Policy described in your pr oduct manu al. For some products, Xantrex maintains a network of regional Authorized Service Centers. Call Xantrex or check our website to see if your product can be repaired at one of these facilities.
iv Operating Manual for RS-232 for XPD Series Power Supply Disclaimer Product THIS LIMITED W ARRANTY IS THE SOLE AND EXCLUSIVE W ARRANTY PROVIDED BY XANTREX IN CONNECTION WITH YO UR XANTREX PRODUCT AN.
Release 1.2 v Information WITHOUT LIMITING THE GENERALITY OF THE FOREGOING, UNL ESS SPECIFICALL Y AGREED TO BY IT IN WRITING, XANTREX a. MAKES NO W ARRANTY AS TO THE ACCU RACY , SUFFICIENCY OR SUIT ABILITY OF ANY TECHNICAL OR O THER INFORMA TION PROVIDED IN MANUALS OR OT HER DOCUMENT A TION PROVIDED BY IT IN CONNECTION WITH THE PRODUCT ; AND b.
vi Operating Manual for RS-232 for XPD Series Power Supply Power Supply Safety W arnings, Cautions, and Notes W arnings, cautions, and notes are defined and formatted in this manual as shown below . W ARNING—High Energy and High V o lt age Exercise caution when using and calibrating a power supply .
Release 1.2 vii About This Manual This technical manual is for the RS-2 32 Interface; a microprocessor-controlled option card for all models of XPD Series DC output power supplies.
About This Manu al viii Operating Manual for RS-232 for XPD Series Power Supply.
Release 1.2 ix Contents About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii Section 1. Features and Specifications Description . . . . . . . . . . . . . . . . . . . . . . . . . . .
Content s x Operating Manual for RS-232 for XPD Series Power Supply Accumulated Status, Status, and Fault Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . 47 Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Release 1.2 11 Section 1. Features and S pecifications Description The RS-232 Interface is a microprocessor-co ntrolled option card for all models of the XPD Series of DC output power supply . Installed internally , the RS-232 interface card gives you remote digital control of simp le test systems.
Features and Specifications Features and Functions 12 Operating Manual for RS-232 for XPD Series Power Supply Features and Functions Features • 16-bit programming and read back of voltage and curren.
Features and Specifications Specifications Release 1.2 13 Specifications The specifications in this section are warranted at 25°C ±5°C unless otherwise specified. All specifications are subject to change without notice. T able 1.1 S pecifications for XPD 500 W Series Supp ly with RS-232 Interface Inst alled.
Features and Specifications Specifications 14 Operating Manual for RS-232 for XPD Series Power Supply.
Release 1.2 15 Section 2. Inst allation and Configuration Introduction T o use this product, you must have the following equipment: • a compatible model of DC output power suppl y • serial extende.
Installa tion and Configuration Initial Inspection 16 Operating Manual for RS-232 for XPD Series Power Supply Figure 2.1 Power Supply Front Panel with RS-232 Interface Installed ! CAUTION Use proper static control techniques to av oid damage to static-sensitive components on the printed circuit board.
Inst allation and Configuration Initial Inspection Release 1.2 17 Figure 2.2 RS-232 Interface Subplate (Located on Power Supply Rear Panel) ! CAUTION Use proper static control techniques to av oid dam.
Installa tion and Configuration Initial Inspection 18 Operating Manual for RS-232 for XPD Series Power Supply Figure 2.3 RS-232 Interface PCB JUMPER SELECTION J2 Local OVP control selection [closed] [default]. See page 28. [open] Front Panel OVP Control.
Inst allation and Configuration Basic Setup Procedure Release 1.2 19 Basic Setup Procedure This procedure can be used as a quick reference for those familiar with the configuration requirements for the RS-232 interface as installed in the DC power supply .
Installa tion and Configuration Communications 20 Operating Manual for RS-232 for XPD Series Power Supply Communications Baud Rate Selection Serial transmission sends and receives data in bit streams at fixed bit rates. Both the computer and the interface must have the same bit rate setting for proper communication.
Inst allation and Configuration Communications Release 1.2 21 Once flow control is selected as option, two flow control methods are available. Y ou can use the rear panel XON switch to select either software-based XON /XOFF flow protocol or hardware-b ased CTS/R TS or DTR/DSR flow protocol.
Installa tion and Configuration Communications 22 Operating Manual for RS-232 for XPD Series Power Supply T able 2.6 Jumper/Pin Settings for DTR/ DSR Flow Control (Default) Connections Use a 9-pin (DB9) to 9-pin p arallel cabl e to connect the interface card to the serial port on the host co mputer .
Inst allation and Configuration Remote/Local Operation Release 1.2 23 Remote/Local Operation Remote / Local Mode Star tu p Start the power supply either in local mode or in remote mode by setting the power ON remote (PON REM) switch which is lo cated on the unit’ s rear panel.
Installa tion and Configuration Remote/Local Operation 24 Operating Manual for RS-232 for XPD Series Power Supply T able 2.10 Remote Mode Powe r On Conditions Remote Mode Operation While in remote mode, use the interface commands to control the output of the power supply from a computer .
Inst allation and Configuration Remote/Local Operation Release 1.2 25 the power supply into loca l mode, o r use the REM OFF comm and to turn of f LLO and return the power supply to local mode. When you to ggle to remote mode from local mode, the power supply has th e same conditions are were last set.
Installa tion and Configuration RS-232 Connection 26 Operating Manual for RS-232 for XPD Series Power Supply RS-232 Connection Use an app roved RS-232 co nnector and cable when con necting the RS-232 Interface to your computer . The RS-232 connector uses the 9 pin mating connector J4 on the rear panel.
Inst allation and Configuration Power Supply Settings Release 1.2 27 Power Supply Settings For serial communication, the computer and the RS-232 interface must share the same communication set tings. Make sure that the settin gs of the computer and of the power supply agree with those shown in T able 2.
Installa tion and Configuration User Options and Settings 28 Operating Manual for RS-232 for XPD Series Power Supply User Options and Settings Y ou can customize remote operation settin gs for OVP (over voltage protection) control and TTL shu tdown by changing ju mper positions on the RS-2 32 PCB.
Inst allation and Configuration User Options and Settings Release 1.2 29 TTL Shut down Y ou can use the Shutdown function t o di sable or enable the supply's output. Disabling the supply using TTL shutdown allows you to make adjustments to the load or to the power supp ly without shutting down t h e power supply .
Installa tion and Configuration User Signals 30 Operating Manual for RS-232 for XPD Series Power Supply User Signals Connector J21 User Signals Auxiliary connector J21, located on the RS-232 interface rear panel, provides several signals to increase your operating control of the supply .
Inst allation and Configuration User Signals Release 1.2 31 Figure 2.6 J21 User Signal Con nector Circuit Block Diagram J21 Cable Connection Use a standard 8-position telephone jack an d data cable to connect to J21. Add a ferrite block to reduce radiated emission .
Installa tion and Configuration User Signals 32 Operating Manual for RS-232 for XPD Series Power Supply Figure 2.7 J21 User Cable with Ferrite Block J21 User Cable Ferrite Block T o User Custom Interf.
Release 1.2 33 Section 3. Operation Introduction This section covers RS-232 interface prog ramming, including an extensive set of device-dependent c ommands, and pr oviding e rror codes, and status and fault register information.
Operation Command Syntax 34 Operating Manual for RS-232 for XPD Series Power Supply Command Format and Parameters The device-dependent language for the RS -232 Interface consis ts of commands and parameters. A command is a one word code which either gives instructions to the interface or asks for inform ation from the interface.
Operation Command Syntax Release 1.2 35 T able 3.1 Command Parameter s Floating Point Number <float> V ariables sent with command parameters are floating point numbers. T able 3.2 defines the structure of floating point numbers for use with the software commands.
Operation Command Syntax 36 Operating Manual for RS-232 for XPD Series Power Supply Command T erminators T erminators indicate the end of a command string and tell the power supply to execute the command.
Operation Command Summary Release 1.2 37 Command Summary Use these commands to control the operation of the supply . They are listed here in order of function such as PROGRAMMING , QUER Y , CALIBRA TION, and ST A TUS co mmands. See “Comma nd Refere nce” on page 40 fo r more detailed information about each command and its use.
Operation Command Summary 38 Operating Manual for RS-232 for XPD Series Power Supply T able 3.4 Query Commands Command Description AUXA? Asks for the state of the set value for the AUXA command AUXB? Asks for the state of the set value for the AUXB command CMODE? Asks for the power supply’ s calibration mode status.
Operation Command Summary Release 1.2 39 T able 3.5 Calibration Commands T able 3.6 S tatus Commands Command Description CMODE Places the supply into calibration mode. IDA T A Calculates the slope and intercept for current programming. IHI Sets the current output to the high calibration point.
Operation Command Reference 40 Operating Manual for RS-232 for XPD Series Power Supply Command Reference T able 3.7 Command Refere nce Command Description ASTS? Asks for the supply’s accumulated st atus register .
Operation Command Reference Release 1.2 41 Command Description DL Y <seconds> Sets a programmable time delay employed by the supply before rep orting fault conditions. The power supply uses the time delay after receiving a new output voltage or current setting via VS ET or ISET , or after receiving RST , TRG , or OUT ON commands.
Operation Command Reference 42 Operating Manual for RS-232 for XPD Series Power Supply Command Description FOLD? Asks for the supply’s present foldback setting. Response: FOLD <mode> where mode is: 0 (OFF) or 1 (CV or Constant V oltage mode) or 2 (CC or Constant Current mode) G TL Go to local.
Operation Command Reference Release 1.2 43 Command Description IOUT? Measures the supply’s actual current output using the built-in current readback circuitry . Response: IOUT <current> IRDA T <Ilo>,<Ihi> Calculates and records the slope and offset for readback voltage using IRLO and IRHI data.
Operation Command Reference 44 Operating Manual for RS-232 for XPD Series Power Supply Command Description OUT <1/ON>,<0/OFF> Enables or disables the supply’s voltage/current output. The supply will continue to accept new commands while the output is disabled but these will not be implemented until OUT ON or OUT 1 is received.
Operation Command Reference Release 1.2 45 Command Description STS? Asks for the supply’s present status register . S tatus conditions are stored in the status register . Each bit represents a separate condition. When the condition is true, the corresponding bit is 1 (true).
Operation Command Reference 46 Operating Manual for RS-232 for XPD Series Power Supply Command Description VLO In response to this command, the power supply sends a programmed voltage value to the output terminal.
Operation Accumulated Status, S tatus, and Fault Registers Release 1.2 47 Accumulated S t atus, S t atus, and Fault Registers The RS-232 option card uses thre e separate registers which are always active. They are the accumulated status, status, and fa ult registers.
Operation Accumulated Status, S tatus, and Fault Registers 48 Operating Manual for RS-232 for XPD Series Power Supply T able 3.8 Accumulated S tatus, S tatus, and Fault Reg isters Notes: 1.
Operation Error Codes Release 1.2 49 Error Codes If the ERR flag in the accumulated status or fault registers has been activated, an ERR? query will return an error number which corresponds to an event described in the following table. The ERR? query will also clear the ERR bit in the register .
Operation T roubleshooting 50 Operating Manual for RS-232 for XPD Series Power Supply T roubleshooting Diagnostic LEDs This section describes the diagnostic LEDs found on the RS-232 interface. Computer Operating Properly (COP) LEDs The RS-232 interface provides three diagnostic LEDs, located at D5, D4 , and D1 on its PCB.
Release 1.2 51 Section 4. Calibration Introduction Y ou can calibrate the RS-232 interface by ad justing the signal levels on the interface card so that they correspond to the expec ted signal levels on the power supply's main assembly .
Calibration V oltage Mode Calibration 52 Operating Manual for RS-232 for XPD Series Power Supply V olt age Mode Calibration V oltage Calibration Setup 1. Disconnect the load from the power su pply which is to be calibrated. 2. Connect a voltmeter across the po wer supply’ s output terminals.
Calibration V o ltage Mode Calibration Release 1.2 53 V oltage Readback Calibration Procedure 1. Set the power supply for calibration as in Figure 4.1. 2. Activate calibration mode by sendi ng command CMODE ON or CMODE 1 to the power supply . 3. Send command VRLO; I RLO to the power supply .
Calibration Current Mode Calibration 54 Operating Manual for RS-232 for XPD Series Power Supply Current Mode Calibration Current Calibration Setup 1. Disconnect the load from the po wer supply to be calibrated. 2. Connect a shunt across the supply's output terminals.
Calibration Current Mode Calibration Release 1.2 55 Current Readback Calibration Procedure 1. Connect the current sh unt and voltmeter to the power supply as shown in Figure 4.2. 2. Activate calibration mode by sendi ng command CMODE ON or CMODE 1 to the power supply .
Calibration Over V olta ge Protection (OVP) Calibration 56 Operating Manual for RS-232 for XPD Series Power Supply Over V oltage Protection (OVP) Calibration W e recommend that you perform OVP ca libration every six mon ths. Connecting a digital voltmeter as in “V oltage Calibration Setu p” is optional.
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