STX Signal Transmitter Installation and Operation ... - Kistler-Morse

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Chapter 7. MVS-STX Calibration Menu 6. Press the F1 Key to access ScfCnt. The display looks like this: SCALE FACTOR > 250000 counts F1 F2 F3 7. Use the keypad or Arrow Keys to input a value for the scale factor counts. Press the Enter Key. The display acknowledges the entry and returns to: MANUAL CAL MENU ScfCnt 8. Press the F3 Key to access ScfWgt. The display looks like this: SCALE FACTOR (Units are consistent with Units Menu.) 9. Use the keypad or Arrow Keys to input a value for the scale factor weight. Press the Enter Key. The display acknowledges the entry and returns to: MANUAL CAL MENU ScfCnt ScfWgt F1 F2 F3 > 9999 lbs F1 F2 F3 ScfWgt F1 F2 F3 10. Press the Menu Key to go to the menu’s second page. The display shows: MANUAL CAL MENU Zero_Cnt F1 F2 F3 11. Press the F1 Key to access Zero_Cnt. The display looks like this: ZERO CALIBRATE > 1048576 counts F1 F2 F3 12. Use the keypad or Arrow Keys to input a value for zero counts (counts associated with zero live load). Press the Enter Key. The display acknowledges the entry and returns to: MANUAL CAL MENU Zero_Cnt Disply Disply F1 F2 F3 13. Press the Esc Key to scroll up the menu tree or press the Auto/Man Key to return to channel monitoring. Displaying Manual Calibration Parameters The second page of the Manual Cal Menu has a display function. Disply allows you to view the following calibration values, which have been entered or internally calculated: • Cnts/mV (digital counts per millivolt of signal) • 0mV cnts (digital counts corresponding to 0 millivolts of signal) • H_SPAN_W (hi span weight) — shows ‘--’ after manual calibration • L_SPAN_W (lo span weight) — shows ‘--’ after manual calibration • H_SPAN_C (hi span counts) — shows ‘--’ after manual calibration • L_SPAN_C (lo span counts) — shows ‘--’ after manual calibration • ZERO_WGT (zero calibration weight, which is zero for manual calibrations) • ZERO_CNT (entered counts corresponding to zero live load) • SCF_WGT (entered scale factor weight) • SCF_CNT (entered scale factor counts) • A_SCF_C (analog scale factor counts, calculated internally based on STX PCB’s analog calibration; only applicable when STX PCB is in Analog Mode) • A_ZERO_C (analog zero counts, calculated internally based on STX PCB’s analog calibration; only applicable when STX PCB is in Analog Mode) Follow this procedure to display the manual calibration parameters: 1. While in the Manual Cal Menu, access the second page by pressing the Menu Key until the display shows: MANUAL CAL MENU Zero_Cal Disply F1 F2 F3 2. Press the F3 Key to access Disply. The display looks like this: Cnts/mV: 699.05 0mV cnts 1048576 F1 F2 F3 3. Press any key other than the Esc or Auto/Man Key to cycle through the parameters. 4. Press the Esc Key to scroll up the menu tree or press the Auto/Man Key to return to channel monitoring. 7-8
○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ Resetting Manual Calibration Parameters The third page of the Manual Cal Menu has a reset function. Use this menu to reset the calibration to the defaults, listed below: • Cnts/mV — dependent on Gain value (see Chapter 8, MVS-STX Service Menu). Value is 699.05 for the default Gain of 2. • 0mV cnts — 1,048,576 • H_SPAN_W — 9,999* • L_SPAN_W — 0 • H_SPAN_C — 1,298,576 • L_SPAN_C — 1,048,576 • ZERO_WGT — 0 • ZERO_CNT — 1,048,576 • SCF_WGT — 9,999* • SCF_CNT — 250,000 *Decimal point/dummy zeroes are consistent with Form. Note Reset has no affect on analog scale factor counts and analog zero counts. Linear This function corrects nonlinearities from a vessel’s sensor output. Use of this function may be required if you notice one of the following after the system is correctly calibrated (using Auto Calibration): • The MVS gives accurate results when the live load is close to 0 and close to the full scale (maximum live load) value, but is consistently inaccurate between those values. • The MVS gives accurate results over some or most of the live load range, but is consistently inaccurate in one area. Chapter 7. MVS-STX Calibration Menu The word ‘consistent’ refers not only to an error occurring, but that the error is approximately the same each time. This type of error may be caused by a non-linear response of the vessel’s structure to changes in load. This type of error can also result from layering of multiple types of material in the vessel, with differing densities, in distinct, consistently defined layers. Note Changing the linearization table incorrectly can cause the MVS to display incorrect weight. Do not change the linearization table unless one of the above problems has been noted. The MVS’s linearization algorithm uses a fivepoint piece-wise linearization method with linear interpolation between points. Figure 7-4 illustrates the linearization operation. Table 7-1 is the default linearization table, consisting of five raw digital count values as inputs and five corrected digital count values as outputs. The default for Linear is Off. Additionally, the raw and corrected default values are identical, so the default linearization table has no effect, even if linearization is On. Raw Value Corrected Value 1048576 1048576 1112576 1112576 1176576 1176576 1240576 1240576 1304576 1304576 Table 7-1. Default Linearization Table Consult with K-M to determine the values to input for linearization. Indicated Weight 1R 1C Linearized Output Non-Linear Input Counts 2C 2R 3C 3R 4C 4R 5R 5C Figure 7-4. Linearization Curve 7-9 Linearizing Table Raw Corrected Input Output 1R 1C 2R 2C 3R 3C 4R 4C 5R 5C Requirements of table values: 1R
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STX Signal Transmitter Installation
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Table of Contents Table of Contents
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Table of Contents Chapter 7. MVS-ST
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Chapter 1. Introduction Chapter 1.
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Chapter 1. Introduction Status LED
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Chapter 2. Hardware Installation Ch
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Chapter 2. Hardware Installation Se
Page 15 and 16: Chapter 2. Hardware Installation S1
Page 17 and 18: Chapter 3. Stand-Alone STX Analog C
Page 31 and 32: Chapter 4. MVS-STX Menu Tree, Keybo
Page 37 and 38: Introduction Chapter 5. MVS-STX Dis
Page 39 and 40: Chapter 5. MVS-STX Display Menu 4.
Page 41 and 42: Chapter 5. MVS-STX Display Menu The
Page 43 and 44: Chapter 5. MVS-STX Display Menu 8.
Page 45 and 46: Chapter 6. MVS-STX Inputs and Outpu
Page 59 and 60: Introduction 7-1 Chapter 7. MVS-STX
Page 61 and 62: Chapter 7. MVS-STX Calibration Menu
Page 63 and 64: Chapter 7. MVS-STX Calibration Menu
Page 65: Chapter 7. MVS-STX Calibration Menu
Page 69 and 70: Chapter 8. MVS-STX Service Menu Cha
Page 71 and 72: Chapter 8. MVS-STX Service Menu Adj
Page 73 and 74: Qlfy (qualify) Qlfy is the triggeri
Page 75 and 76: Chapter 8. MVS-STX Service Menu •
Page 77 and 78: Chapter 8. MVS-STX Service Menu Mic
Page 79 and 80: Chapter 8. MVS-STX Service Menu The
Page 81 and 82: Chapter 9. MVS-STX Math Channels Ch
Page 83 and 84: Chapter 9. MVS-STX Math Channels
Page 85 and 86: Chapter 9. MVS-STX Math Channels 8.
Page 87 and 88: Appendix A. Product Specifications
Page 89 and 90: Appendix B. Serial Commands Appendi
Page 91 and 92: Appendix B. Serial Commands Checksu
Page 93 and 94: ‘m7’ Command — Select Self-Ca
Page 95 and 96: Introduction Appendix C. MVS-STX Ca
Page 97 and 98: Appendix C. MVS-STX Calculation of
Page 99 and 100: Appendix D. MVS-STX Error Messages
Page 101 and 102: 5. I/O Error Adr:XX Explanation An
Page 103 and 104: Appendix E. Trimming the Current Ou
Page 105 and 106: Appendix F. Industry Approvals Appe
Page 107 and 108: Appendix G. Kistler-Morse Service a
Page 109 and 110: Appendix H. Technical Drawings Appe
Page 112: Appendix H. Technical Drawings H-4
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Appendix H. Technical Drawings H-8
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Page 132 and 133:
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Appendix I. MVS-STX Menu Tree and H
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