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LEM BEN 5000 Calibration

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BEN 5000
DFR Calibration
Primary Training
9200-14
REV. E
11 September 2002

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  • Page 1 BEN 5000 DFR Calibration Primary Training 9200-14 REV. E 11 September 2002...
  • Page 2 Calibration Primary Training Contacting us: LEM Instruments, Inc. 23822 HAWTHORNE BLVD., SUITE 100 TORRANCE, CA 90505 TEL: 310-373-0966 FAX: 310-373-9056 Specifications and contents of this manual are subject to change. COPYRIGHT 2002 LEM Instruments, Inc. No unauthorized reproduction or duplication of this document is allowed without the express consent of LEM.

  • Page 3: Table Of Contents

    Calibration Primary Training Table of Contents INTRODUCTION.............................4 GENERAL FUNCTIONS ........................6 2.1 O : ...........................6 PERATING MODE 2.1.1 12 bit-analog/digital conversion of analog channels ..............6 2.1.2 Anti-aliasing filter...........................6 2.1.3 Switchable RMS/DC conversion of the analog inputs (-02, -12, -22 option) .........6 2.1.4 Transmission of the results to the processing unit by high speed serial line........6 2.2 C...

  • Page 4: Introduction

    These values are read & stored in the nonvolatile memory of the DFR. The following is excerpted from the BEN 5000 Technical Reference Manual. Page 4 9200-14 REV. E...
  • Page 5 Calibration Primary Training 623-XX Acquisition card This card is available in two different versions: 623-01, -11, -21 standard version 623-02, -12, -22 software switchable RMS/DC conversion Con n ecto r DB 9 c onnec tor fo r PSU i np u t RS23 2 to PC for cal i b ra tio n Co nnec tor...

  • Page 6: General Functions

    Calibration Primary Training GENERAL FUNCTIONS The acquisition card can process 8 analog channels and 24 digital channels. It can handle 2 different acquisition rates. Each analog channel is programmed for one of those 2 rates. A yellow LED at the front edge of the card blinks twice per second during normal operation mode.

  • Page 7: Calibration Mode

    3.1 Starting AUTOCAL Software : Supplied with the BEN 5000, is a diskette containing the AUTOCAL program. This is a DOS program, and functions most reliably when you shutdown Windows to DOS mode. Also shipped with every BEN, is a serial communication cable labeled for calibration use.
  • Page 8 Calibration Primary Training Copy the AUTOCAL program files to your computer, using Windows explorer, or via the DOS Copy command. We recommend that you create an independent subdirectory to contain the AUTOCAL program: C:\BEN32\AUTOCAL Observe the following procedure : • Connect RS-232 port of the computer to acquisition card connector P5. •...

  • Page 9: Auto Config Menu

    Calibration Primary Training ◊ The EXIT menu allows for quitting the software and returning to the DOS prompt. ◊ The ? menu shows the 'AUTOCAL' software version. The menus 'AUTOCONFIG' , 'CALIBRATE' and 'MEASURE' are described in the following sections. 3.2 Auto Config Menu Place the cursor on the AUTOCONFIG menu and select with the <ENTER>...

  • Page 10: Analog Inputs Window

    FAIL = error • Polarity (the polarities are selected via the BENCFG Configuration Software of the BEN 5000) “+” = normal: the channel is in alarm when power is applied (N.O. contacts) “-“ = inverted; the channel is in alarm when no power is applied (N.C. contacts) 3.2.2 Analog inputs window...

  • Page 11: Input Ranges

    Calibration Primary Training 3.2.3 Input ranges VOLTAGE CURRENT Max. input value Max. input value Range AC RMS Range AC RMS 2.8284V 2/SH 2/Shunt A 2.8284/shunt A 7.0710V 5/SH 5/Shunt A 7.0710/shunt A 16.9700V 12/SH 12/Shunt A 16.9700/shunt A 42.4260V 30/SH 30/Shunt A 42.4260/shunt A 110V...

  • Page 12: Calibrate Menu

    Calibration Primary Training When the range for each channel has been set up, quit the AUTOCONFIG window by moving the arrows to the <OK> firld and press <ENTER>. Calibrate menu Place the cursor on the CALIBRATE menu, and select this choice with the <ENTER>...

  • Page 13: Offset Calibration

    Calibration Primary Training 3.3.2 Offset calibration Start the calibration process by pressing <ENTER>. First, the software will correct the offset : you will be prompted to short the corresponding analog inputs. Offset correction Please, short cut the analog input number : 1 Press OK to calibrate offset CANCEL When the input has been shorted, move the cursor to the <OK>...
  • Page 14 Calibration Primary Training Offset correction DC Gain correction Input the value of the DC voltage connected to the analog input (s) number : 1 (Range is : 2.828 Volts) Value = 2 Volts to calibrate input Apply to the input the same voltage as entered on the screen, then move the cursor to the [OK] icon, and press [ENTER].

  • Page 15: Notes

    Calibration Primary Training Offset correction AC Gain correction Input the value of the AC voltage connected to the analog input (s) number : 1 (Range is : 2 Volts RMS) Value = 1 Volts RMS to calibrate input Apply to the input the same voltage as entered on the screen, then move the cursor to the [OK] icon, and press [ENTER].
  • Page 16 Calibration Primary Training On current inputs, terminals type RTK/S are provided with short-circuit bridges to short out the field inputs. The operator must therefore move the bridge to short out the field inputs, and screw it very tightly, before having access to the sliding switches of the terminals;...

  • Page 17: End Of Calibration

    Calibration Primary Training 3.3.5 End of calibration Following the previously explained procedure, you can calibrate each channel of the 623 card. To calibrate the other 623 cards present in the BEN, first exit the program using the [EXIT] command, wait until the acquisition error on the LCD screen of the BEN disappears, then remove the RS-232 connector of the card and connect it to the next card.

  • Page 18: Measure Menu

    Calibration Primary Training 3.4 Measure menu Place the cursor on the MEASURE menu and accept with the <ENTER> key. This menu allows you to display in real time the different values measured at each of the 8 analog channels and the 24 digital channels. This function can be used to check the status of the acquisition system.

  • Page 19: Appendix 1 : How To Handle Input Terminals For Calibration

    Calibration Primary Training APPENDIX 1 : HOW TO HANDLE INPUT TERMINALS FOR CALIBRATION 4.1 Calibration of one voltage input Voltage input with interruptible terminals Voltage input without interruptible (RTK/S, MTK P/P,...) terminals (SSK110, UK4,...) Offset calibration Offset calibration 1. Open switches of both terminals (n, 1.

  • Page 20: Calibrate One Voltage Input With Interruptible Terminals (Rtk/S, Mtk P/P

    Calibration Primary Training 4.1.1 Calibrate one voltage input with interruptible terminals (RTK/S, MTK P/P,...) 1. Open switches of both terminals REFERENCE VOLTAGE SOURCE 11A1 USER INPUT SIGNAL CARD 11A11 TERMINALS USER SIDE BEN SIDE 2. Short cut voltage inputs, BEN side REFERENCE VOLTAGE SOURCE...
  • Page 21 Calibration Primary Training 3. Start offset calibration process, wait for end of process 4. Remove short-circuit 5. Apply reference voltage source, BEN side REFERENCE VOLTAGE SOURCE 11A1 USER INPUT SIGNAL CARD 11A11 TERMINALS USER SIDE BEN SIDE 6. Start gain calibration process, wait for end of process 7.

  • Page 22: Calibrate One Voltage Input Without Interruptible Terminals (Ssk110, Uk4

    Calibration Primary Training REFERENCE VOLTAGE SOURCE 11A1 USER INPUT SIGNAL CARD 11A11 TERMINALS USER SIDE BEN SIDE 4.1.2 Calibrate one voltage input without interruptible terminals (SSK110, UK4,...) 1. Disconnect USER wires from both terminals REFERENCE VOLTAGE SOURCE 11A1 USER INPUT SIGNAL CARD 11A11...
  • Page 23 Calibration Primary Training REFERENCE VOLTAGE SOURCE 11A1 USER INPUT SIGNAL CARD 11A11 TERMINALS USER SIDE BEN SIDE 3. Start offset calibration process, wait for end of process 4. Remove short-circuit 5. Apply reference voltage source REFERENCE VOLTAGE SOURCE 11A1 USER INPUT SIGNAL CARD...
  • Page 24 Calibration Primary Training 7. Remove reference voltage source 8. Connect USER wires again to both terminals REFERENCE VOLTAGE SOURCE 11A1 USER INPUT SIGNAL CARD 11A11 TERMINALS USER SIDE BEN SIDE Page 24 9200-14 REV. E...

  • Page 25: Calibration Of One Current Input

    Calibration Primary Training 4.2 Calibration of one current input Current input with interruptible terminals Current input without interruptible (RTK/S, MTK P/P,...) terminals (SSK110, UK4,...) Offset calibration Offset calibration 1. Short cut signal input, USER side 1. Be sure that USER current circuit may Be sure that USER current circuit will be open without danger ! never be open !

  • Page 26: Calibrate One Current Input With Interruptible Terminals (Rtk/S, Mtk P/P

    Calibration Primary Training 4.2.1 Calibrate one current input with interruptible terminals (RTK/S, MTK P/P,...) Short cut signal input, USER side; be sure that USER current circuit will never be open ! REFERENCE CURRENT SOURCE 11A1 USER INPUT SIGNAL CARD 11A11 TERMINALS USER SIDE BEN SIDE...
  • Page 27 Calibration Primary Training 3. Start offset calibration process, wait end of process 4. Apply reference current source, BEN side REFERENCE CURRENT SOURCE 11A1 USER INPUT SIGNAL CARD 11A11 TERMINALS USER SIDE BEN SIDE 5. Start gain calibration process, wait end of process 6.
  • Page 28 Calibration Primary Training 8. Remove short-circuit USER side REFERENCE CURRENT SOURCE 11A1 USER INPUT SIGNAL CARD 11A11 TERMINALS USER SIDE BEN SIDE Page 28 9200-14 REV. E...

  • Page 29: Calibrate One Current Input Without Interruptible Terminals (Ssk110, Uk4

    Calibration Primary Training 4.2.2 Calibrate one current input without interruptible terminals (SSK110, UK4,...) 1. Be sure that USER current circuit may be open without danger ! 2. Disconnect USER wires from both terminals REFERENCE CURRENT SOURCE 11A1 USER INPUT SIGNAL CARD 11A11 TERMINALS...
  • Page 30 Calibration Primary Training 5. Start gain calibration process, wait end of process 6. Remove reference current source 7. Connect USER wires again to both terminals REFERENCE CURRENT SOURCE 11A1 USER INPUT SIGNAL CARD 11A11 TERMINALS USER SIDE BEN SIDE Page 30 9200-14 REV.

  • Page 31: Appendix 2 : Description Of Terminal Marking

    Calibration Primary Training APPENDIX 2 : DESCRIPTION OF TERMINAL MARKING The terminal blocks are always marked with two digits and one letter at the top or bottom of a block of 8 inputs, analog either digital. The left digit represents the MULDEX card number (5626 board) which controls these 8 inputs;...
  • Page 32 Calibration Primary Training USER SIDE BEN SIDE "A" : this terminal block corresponds to the 8 analog inputs of one acquisition controller card "1" : this acquisition controller card is connected to the input number "1" of a muldex card "5"...

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