Toshiba LF620 B Series Instruction Manual
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Toshiba LF620 B Series Instruction Manual

Electromagnetic flowmeter converter
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Electromagnetic Flowmeter Converter
NOTES
Before using the equipment, please read this manual carefully and understand the
contents, and then use the equipment correctly.
• NEVER attempt to operate the equipment in any ways that are not described in this
instruction manual.
• After reading this manual, store it with care in a place where it can be referred to
whenever needed.
• Please be sure that this manual is delivered to the personnel who will use this
product.
LF620*B Type, LF622*B Type
INSTRUCTION MANUAL
6 F 8 A 0 9 9 7

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Summary of Contents for Toshiba LF620 B Series

  • Page 1 6 F 8 A 0 9 9 7 Electromagnetic Flowmeter Converter LF620*B Type, LF622*B Type INSTRUCTION MANUAL NOTES Before using the equipment, please read this manual carefully and understand the contents, and then use the equipment correctly. • NEVER attempt to operate the equipment in any ways that are not described in this instruction manual.
  • Page 2 LF620*B Separate type converter LF622*B: LF622*B Toshiba LF62**B series electromagnetic flowmeter converters can be used in combination with various types of electromagnetic flowmeter detectors. For the notes on usage, piping, installation, configuration and maintenance of the combined detector, check the model number of the combined detector and read the instruction manual of the relevant detector.
  • Page 3 6 F 8 A 0 9 9 7 SAFETY PRECAUTIONS Safety signs and labels affixed to the product and/or described in this manual give important information for using the product safely. They help prevent damage to property and obviate hazards for persons using the product.
  • Page 4 6 F 8 A 0 9 9 7 SAFETY PRECAUTIONS (continued) Safety Precautions for Installation and Wiring CAUTION  Do not use the LF620*B and LF622*B in an  Use an appropriate device to carry and install the explosive atmosphere. LF620*B and LF622*B.
  • Page 5 Warranty and Limitation of Liability Toshiba does not accept liability for any damage or loss, material or personal, caused as a direct or indirect result of the operation of this product in connection with, or due to, the occurrence of any event of force majeure (including fire or earthquake) or the misuse of this product, whether intentional or accidental.
  • Page 6 6 F 8 A 0 9 9 7 Handling Precautions To obtain the optimum performance from the LF620*B and LF622*B converter for years of continuous operation, observe the following precautions. (1) Do not store or install the flowmeter in : ・Where there is direct sunlight.
  • Page 7 6 F 8 A 0 9 9 7 Handling Precautions (continued) (6) The converter housing covers and the cable glands are tightened securely at the time of shipment. Do not remove these covers or glands unless it is necessary to wire new cables or replace old ones.

  • Page 8: Table Of Contents

    6 F 8 A 0 9 9 7 Table of Contents Product Inspection and Storage ........................... 11 Product Inspection ............................11 Storage ................................11 Overview ................................. 12 Names of Parts ............................... 13 Appearance ..............................13 3.1.1 Appearance of LF620*B Type ......................13 3.1.2 Appearance of LF622*B Type ......................
  • Page 9 6 F 8 A 0 9 9 7 7.2.2 Setting and Calibration ........................46 Configuration Items Selection Table ......................50 Password input .............................. 52 Parameter Settings ..............................53 Parameter Setting Items ..........................53 Check/Change of Parameters ........................54 8.2.1 Menu Configuration Selection Screen ..................... 54 Function A: Detector Settings ........................
  • Page 10 6 F 8 A 0 9 9 7 8.2.30 Switch Position Setting (Function P-3) ..................105 8.2.31 Backlight Adjustment(Function P-4) ....................107 Function Q: Other Settings 2 ........................108 8.2.32 UNIT Serial Display (Function Q-1) ....................108 8.2.33 Detector Type Setting (Function Q2) .................... 108 Function R: Other Settings 2 ........................
  • Page 11 6 F 8 A 0 9 9 7 15. Specifications ............................... 154 15.1 Specifications .............................. 154 15.2 Model Number Table ........................... 158 16. Outline Drawing ..............................159 16.1 LF620*B Type ............................. 159 16.2 LF622*B Type ............................. 160 Appendix 1 Reverse Lookup of Functions based on Applications ................161 Appendix 2 Factory Default/ Standard Values ......................

  • Page 12: Product Inspection And Storage

     Inspect the flowmeter for indications of damage that may have occurred during shipment.  Make sure the type and specifications of the flowmeter are in accordance with the ordered specifications. If you cannot find the items listed above or any problem exists, contact your nearest Toshiba representative. 1.2 Storage...

  • Page 13: Overview

    6 F 8 A 0 9 9 7 2. Overview This product is a converter used for electric flowmeters that measure the volumetric flow rate of conductive fluid using Faraday's law of electromagnetic induction. You can bring out the functions of the converter when you place it in the converter housing you prepare and use it in combination with a fluid rate measurement detector.

  • Page 14: Names Of Parts

    6 F 8 A 0 9 9 7 3. Names of Parts 3.1 Appearance 3.1.1 Appearance of LF620*B Type LF620*B Display section Converter case Control key (Control panel) Cable gland for Converter power cable Cable gland for current output cable Converter installation screw Detector Ground terminal...

  • Page 15: Appearance Of Lf622*B Type

    6 F 8 A 0 9 9 7 3.1.2 Appearance of LF622*B Type LF622*B Display section Converter installation screw Converter case Control key (Control panel) Cable gland for excitation cable Cable gland for signal cable Ground terminal Cable gland for power cable Cable gland for signal cable Cable gland for flow rate...

  • Page 16: Construction Of The Terminal Blocks

    6 F 8 A 0 9 9 7 3.2 Construction of the terminal blocks 3.2.1 Terminal Block Construction of LF620*B Type When you remove the terminal block cover shown in the figure "Appearance of LF620*B and LF622*B Type", you can see the converter terminal block as shown below. CAUTION LF620*B The label shown left is placed near the terminal board...

  • Page 17: Installation

    6 F 8 A 0 9 9 7 4. Installation Safety Precautions for Installation CAUTION  Do not use the LF620*B and LF622*B  Use an appropriate device to carry and install in an explosive atmosphere. the LF620*B and LF622*B. If his product falls to the ground, Using this product in an injury, or...

  • Page 18: Notes On Selecting The Installation Location

    6 F 8 A 0 9 9 7 4.1 Notes on Selecting the Installation Location This product is designed for the following environment. ・Indoor and outdoor installation ・Ambient temperature:－20 to ＋60℃ ・Altitude:Up to 2000m ・Humidity range:10 to 90%(no condensation) ・Regulation of power voltage:±10% ・Pollution degree 2 ・Structure: IP67(NEMA 4X) (equivalent) Do not store or install the flowmeter in :...

  • Page 19: How To Install

    6 F 8 A 0 9 9 7 4.2 How to Install 4.2.1 LF620*B Type The LF620*B type converter is used as one united body. The LF620*B type is not installed by itself. For how to install the LF620*B type converter and a detector, check the type of the combined detector and follow the instruction manual for the relevant detector.
  • Page 20 6 F 8 A 0 9 9 7 Unit : mm 4-φ11 hole, or M10 Panel or wall mounting dimensions Figure 4.1 Examples of Installation to Panel and Wall － 19 －...
  • Page 21 6 F 8 A 0 9 9 7 Unit : mm M10U bolt 50A pipe (2B pipe) etc. Figure 4.2 Example of Pipestand Mounting － 20 －...

  • Page 22: Wiring

    6 F 8 A 0 9 9 7 5. Wiring Notes on wiring CAUTION  Install a switch and fuse to isolate the  Turn off mains power before conducting LF620*B and LF622*B from mains power. wiring work. Power supply from mains Wiring while power is applied power can cause electric shock can cause electric shock.

  • Page 23: Cables

    6 F 8 A 0 9 9 7 CAUTION (1) Select the cable run location so they are away from electrical equipment (motors, transformers, or radio transmitters) which causes electromagnetic or electrostatic interference. (2) Deterioration of flowmeter circuit insulation occurs if the converter interior or cable ends get wet or humidified.

  • Page 24: External Device Connections And Grounding

    6 F 8 A 0 9 9 7 5.2 External Device Connections and Grounding 5.2.1 LF620*B Type The terminal board connections of an integral type converter LF620*B are shown in Figures 5.2.1.1 and 5.2.1.2. Proceed with wiring as described in Section 5.4, “Wiring Procedure.” LF620*B NOTE ・When 3-core power cable is used,...

  • Page 25: Lf622*B Type

    6 F 8 A 0 9 9 7 5.2.2 LF622*B Type The terminal board connections of separate type converter LF622*B are shown in Figure 5.2.2. Proceed with wiring as described in Section 5.4, “Wiring Procedure.” Refer to Figures 5.2.1.1 and 5.2.1.2 for the external wiring of the power cable and the input and output signal cable (for current output and digital LF622*B input and output).

  • Page 26: Notes On Wiring

    • When replacing the flow rate signal cable and excitation cable, also refer to the instruction manual of the relevant detector. Order the detector terminal box cover gasket and cable connection gasket from Toshiba or a Toshiba distributor and be sure to replace the gasket.

  • Page 27: Wiring

    6 F 8 A 0 9 9 7 5.4 Wiring CAUTION  Do not wire cables and replace parts when  Do not work on piping and wiring with wet hands. power is supplied. Wet hands may result in electric Wiring work and replacing shock.
  • Page 28 6 F 8 A 0 9 9 7 (2) Grounding the LF622*B type LF622*B Ground the external grounding terminal of the detector and the FG terminal of the converter (or external grounding terminal of the converter) securely (grounding resistance 100Ω or lower). Use grounding wire material of IV wire 5.5mm or more.

  • Page 29: Terminal Treatment Of Cables

    6 F 8 A 0 9 9 7 5.4.2 Terminal Treatment of Cables Follow the procedures below to treat the terminals (at the converter side) of various cables and install the cables to the terminal block. Use appropriate cables based on the description in Section 5.1 "Cables." Crimp a round type insulated crimp-type terminal to the end of the cables.
  • Page 30 6 F 8 A 0 9 9 7 (3) Connecting the input signal cable: LF622*B Strip the sheath from the end of each conductor of a 2-core individually shielded cable as shown in Figure 5.9. Twist those shields and cover them with a thermal contraction tube or vinyl tube not to make contact with the case or core wires.

  • Page 31: Cable Connection

    6 F 8 A 0 9 9 7 5.4.3 Cable Connection (1) Connect and install the terminal-treated cables to the terminal block by the following procedure. Note 1: Connect the cables to the terminal block securely. A loose connection may cause incorrect measurement.
  • Page 32 6 F 8 A 0 9 9 7 (2) After connecting the cables to the terminal block, take up the slack of the cables and tighten the tightening nuts. In this case, be careful that if the sheath-stripped portion of the cable comes to the packing, air tightness may not be kept.

  • Page 33: Digital I/O Connections

    6 F 8 A 0 9 9 7 5.5 Digital I/O Connections Digital I/O terminals consist of contact output terminals (DO1 and DO2), voltage signal input terminal (DI), and signal common terminal (COM). Each terminal (DO1, DO2 and DI) is isolated from internal circuits.

  • Page 34: Operation

    6 F 8 A 0 9 9 7 6. Operation CAUTION  Do not touch the terminal board when power  Do not touch the main body when high is supplied. temperature fluid is being measured. Touching the terminal board The fluid raises the main body when power is supplied can temperature and can cause burns.

  • Page 35: Zero Adjustment

    6 F 8 A 0 9 9 7 Note 1: If the detector pipe is not filled with the fluid to be measured, the flow rate will be indefinite and unable to be measured. Before using the flowmeter, be sure to fill the detector pipe the fluid to be measured.

  • Page 36: Lcd Display And Controls

    6 F 8 A 0 9 9 7 7. LCD Display and Controls Name and Function of Each Part of LCD Display The LDC display and infrared switches (hereafter, called "control key") in front of the converter allows you to view or set various constants such as measured values and parameters. LCD Display LCD Display LF622*B...
  • Page 37 6 F 8 A 0 9 9 7 ● LCD electronically rotatable display The backlit display provides an easy-to-read indication even under poor lighting conditions. Instantaneous flow rates or totalized flow in the measurement mode or configuration parameters in the setting mode can be displayed.
  • Page 38 6 F 8 A 0 9 9 7 ● Setting switch The control keys allow you to perform converter control and setting, without opening the converter housing. These three controls keys function differently depending on the current display screen. The functions of these control keys are displayed on the display screen. In this product, the display method can be changed according to the converter installation direction.
  • Page 39 6 F 8 A 0 9 9 7 Display Format In the measurement mode, the measured data is displayed using the menu items set by the Display 1 (DSPL1) and Display 2 (DSPL2). (For display settings, see 8.2.6 "Display Setting.") ・...
  • Page 40 6 F 8 A 0 9 9 7 Note 1: Totalized flow volume and totalized difference flow volume are displayed to the least significant digit of the set count rate. (Example1) When the count rate is 0.0001 m When the measurement object flows through 0.0001(m ), inside counter counts 1.
  • Page 41 6 F 8 A 0 9 9 7 ・ Percent display Numeric value･･･Within the range of +125.0% to −125%, - 1 2 5 . 0 displayed to the decimal place of 0.1%. Unit･･･ "%" fixed. * If the value goes out of the display range, an error message appears. ・...
  • Page 42 6 F 8 A 0 9 9 7 ・ Bar graph display Bar graph can be set only for Display 2. Graph･･･ The measured value is displayed in bar graph. The left side of the graph is RL (Range Low limit) and the right side of the graph is RH (Range High limit).

  • Page 43: Basic Operations

    6 F 8 A 0 9 9 7 7.2 Basic operations 7.2.1 Mode Change The converter provides the setting mode and calibration mode as well as the measurement mode. To change the mode to the setting mode or to the calibration mode, push the switch.
  • Page 44 6 F 8 A 0 9 9 7 ○Flow of mode change Note: When the screen is switched, let your * (L) indicates that you can hold down the switch longer. finger off the switch. If you keep pushing, the * <L>...
  • Page 45 6 F 8 A 0 9 9 7 ○ Pulse output setting mode This mode is used to perform continuous parameter settings (automatic operation) regarding pulse outputs. When these parameters are set, pulse output is ready to send out. CNT RATE PLS WID MENU SEL DO1 FUNC...
  • Page 46 6 F 8 A 0 9 9 7 ○ Explanation about mode change The converter usually works continuously in the measurement mode. If you want to set parameters or perform calibration or adjustment, you have to go to the setting mode. To enter the setting mode, push the center switch for 3 seconds or more in the measurement mode.

  • Page 47: Setting And Calibration

    6 F 8 A 0 9 9 7 ○ Incorrect password input Protection Level 1 When the password entered is incorrect, changing of certain parameters is not allowed. In addition, the clear operation of the totalizer cannot be used. (Totalizer start and stop operations are still allowed.) Protection Level 2 If the password entered is incorrect, the screen will go back to the measurement mode.
  • Page 48 6 F 8 A 0 9 9 7 ● Moving to the menu screen (Example for transferring from the mode change screen to the setting screen of DSPL2 ) Switch operation Display example Description PUSH SW Mode change screen CNT: CNT CTRL SET: SET MODE...
  • Page 49 6 F 8 A 0 9 9 7 ● Checking or changing the setting value (Example for changing the value of R1) Switch operation Display example Description C:RANGE Menu screen for function C 1 R TYPE 2 R1 3 R2 Push to move the arrow mark to 4 R3 5 R4...
  • Page 50 6 F 8 A 0 9 9 7 Switch operation Display example Description If you want to cancel the operation, for example, because the temporarily set data is 100.000 incorrect, pushing returns temporarily set data to the previous value, enabling you to change the setting value again.

  • Page 51: Configuration Items Selection Table

    6 F 8 A 0 9 9 7 7.3 Configuration Items Selection Table How to check or change each constant of the converter is shown in the table below. Details of each item are described in the setting items (A to R) of Chapter 8, "Parameter Settings." ○...
  • Page 52 6 F 8 A 0 9 9 7 ○ Detailed configuration When you select "DETAILED" in the menu configuration selection screen, the check/change menu for each constant setting is expanded as shown in the table below. Function Exciting Exciting Flow Returns to Meter size DETECTOR...

  • Page 53: Password Input

    6 F 8 A 0 9 9 7 7.4 Password input The converter provides the password function to prohibit some functions that affect the flow measurement from being set or adjusted. For the protected functions, see the menu configuration table on the previous page.

  • Page 54: Parameter Settings

    6 F 8 A 0 9 9 7 8. Parameter Settings 8.1 Parameter Setting Items To check or change each constant of the converter, first select the desired setting item described in 7.3.2 “Setting and Calibration.” Proceed as follows for settings in the setting mode. Function item Display example Function...

  • Page 55: Check/Change Of Parameters

    6 F 8 A 0 9 9 7 8.2 Check/Change of Parameters 8.2.1 Menu Configuration Selection Screen Display example MENU SEL BASIC DETAILED PREVIEW ZERO ADJ PLS SET You can select the kind of menu configuration. For menu items of configuration, see 7.4 "Setting and Calibration Items List." Only the basic parameters are displayed.

  • Page 56: Function A: Detector Settings

    6 F 8 A 0 9 9 7 Function A: Detector Settings 8.2.2 Exciting Current Value (Function A-1) The exciting current value can be checked/changed by the following procedures. Be sure to match the exciting current value with the value specified for the combined detector.

  • Page 57: Meter Size (Function A-2)

    6 F 8 A 0 9 9 7 Switch operation Display example Description EXC CUR STEP6 Pushing shows a message to confirm the setting is OK or not. 0.2150 If OK, push . If you need to redo the setting, push Pushing cancels the setting operation SET OK?
  • Page 58 6 F 8 A 0 9 9 7 Switch operation Display example Description SIZE STEP4 Repeat this operation until 150mm is obtained. When the desired value is obtained, push to set the value temporarily. SIZE STEP5(=END) Pushing shows a message to confirm whether the setting is OK or not.

  • Page 59: Exciting Frequency (Function A-3)

    6 F 8 A 0 9 9 7 8.2.4 Exciting Frequency (Function A-3) You can select an exciting frequency of 6Hz, 12Hz or 24Hz. The range of usable exciting frequency depending on the detector to be combined is shown below. Set factory setting for normal operation.

  • Page 60: Flow Direction Setting (Function A-4)

    6 F 8 A 0 9 9 7 Switch operation Display example Description EXC FREQ STEP3 You can continue to change the setting item. Pushing changes the selection items. : Selected item is scrolled up. : Selected item is scrolled down. EXC FREQ STEP4 Repeat this operation to select 12Hz.

  • Page 61: Function B: Display Settings

    6 F 8 A 0 9 9 7 Switch operation Display example Description FLOW DIR STEP1 The currently set flow direction (NORMAL in this example) appears. NORMAL Then push * Pushing returns you to the setting menu. FLOW DIR STEP2 The switches at the bottom change.
  • Page 62 6 F 8 A 0 9 9 7 Note 1: If COUNT, RANGE, GRAPH or CUSTOM is selected, the display is shown below: COUNT: displays the totalized flow counts (up to 8 digits). RANGE: displays the range number being used for measurement (1 to 4). GPARH: displays the measured value (% value) in bar graph.
  • Page 63 6 F 8 A 0 9 9 7 Note 2: The second unit (time unit) changes as shown below: /min For Display 2 unit setting, select DSPL2 from the setting menu. ● How to select the display digit setting When you select flow velocity or flow rate (custom unit is included), the screen automatically moves to the display digit setting screen.
  • Page 64 6 F 8 A 0 9 9 7 For example, if the setting range is 10m/s and display digit setting is 1/100, the measured value will be displayed to the first decimal place. Setting range＝1 . 5 0 0 0 0 m ／min One hundredth of Maximum effective digits...

  • Page 65: Custom Coefficient Setting (Function B-2)

    6 F 8 A 0 9 9 7 Note: The setting item for the third unit (flow volume direction code) changes cyclically as shown below. B(bi-directional) F(forward direction fixed) R(reverse direction fixed) C(cyclic) D(difference flow rate) When C(cyclic) is selected, totalizer of forward, reverse and difference are displayed at cycle about 5 seconds.

  • Page 66: Custom Unit Setting (Function B-3)

    6 F 8 A 0 9 9 7 Switch operation Display example Description CS VAL STEP4(=END) Pushing shows a message to confirm whether the setting is OK or not. 2.25000 If OK, push . If you need to redo the setting, push SET OK? Pushing...

  • Page 67: Function C: Range Settings

    6 F 8 A 0 9 9 7 Switch operation Display example Description CS UNIT STEP4(=END) Pushing when the cursor is positioned on the 7th character shows a message to XXX/ZZZ confirm whether the setting is OK or not. If OK, push .
  • Page 68 6 F 8 A 0 9 9 7 ● Span You can set the span for actual flow rate or flow velocity. (1) Setting range The span can be set within 0.1 m/s to 10 m/s in terms of flow velocity. If you try to set the span outside of this range, either high limit or low limit error message appears: HIGH OVER SPEC (if the set value exceeds 10 m/s)
  • Page 69 6 F 8 A 0 9 9 7 ● Unit of span The span setting is performed for Range 1. The same unit as that of Range 1 applies automatically to Ranges 2 to 4 and thus its setting is not needed.
  • Page 70 6 F 8 A 0 9 9 7 ● Range hysteresis The hysteresis is the dead band used when multiple ranges are switched. You can set the hysteresis within the range of 0 to 25% in increments of 0.1%. The hysteresis is set only when automatic selection of multiple ranges is used. ●...
  • Page 71 6 F 8 A 0 9 9 7 Switch operation Display example Description C:RANGE Pushing returns you to the setting 1 R TYPE menu. 2 R1 3 R2 4 R3 5 R4 6 R HYS 7 EXIT ● Changing the range type The range type should be set before changing the span.
  • Page 72 6 F 8 A 0 9 9 7 Switch operation Description Display example R TYPE STEP5(=END) When you push , a message appears to confirm whether the setting is OK or not. 2F-2R If OK, push . If you want to redo the setting, push SET OK? Pushing...
  • Page 73 6 F 8 A 0 9 9 7 Switch operation Description Display example STEP6 Push to change the number of the digit. 30.3333 Push to move the digit. STEP7(=END) When you push , a message appears to confirm whether the setting is OK or not. 30.0000 If OK, push .

  • Page 74: Function D: Filter Settings

    6 F 8 A 0 9 9 7 Switch operation Display example Description R HYS STEP3 Push to move the cursor to the desired digit and push to change the 05.0 number of the digit. R HYS STEP4(=END) When you push , a message appears to confirm whether the setting is OK or not.

  • Page 75: Rate-Of-Change Limit And Control Limit Time (Function D-2)

    6 F 8 A 0 9 9 7 Switch operation Description Display example DAMPING STEP2 The switches at the bottom change. are shown.) 02.0 At the same time, the cursor appears. DAMPING STEP3 Push to move the cursor to the desired digit and push to change the 10.0...
  • Page 76 6 F 8 A 0 9 9 7 ● Changing the rate-of-change limit The following is an example to change the rate-of-change limit value from 10.0% to 15.0%. Switch operation Display example Description D:FILTER Select "LIM RATE" from the setting item 1 DAMPING selection menu.

  • Page 77: Function E: Low Cutoff Settings

    6 F 8 A 0 9 9 7 Function E: Low Cutoff Settings 8.2.12 Low Cutoff (Function E-1) The low cutoff is the function to set the current output to zero forcefully if the flow rate is equal to or less than the low cutoff value set near 0%.

  • Page 78: Display Low Cutoff (Function E-2)

    6 F 8 A 0 9 9 7 8.2.13 Display Low Cutoff (Function E-2) When low cutoff is set in 8.2.12 “Low Cutoff,” this function determines whether to use the low cutoff processing for displayed values. You can select the display low cutoff setting from the items in the table below. ●...

  • Page 79: Function F: Zero Point Setting

    6 F 8 A 0 9 9 7 Switch operation Display example Description DSPL SET STEP4(=END) When you push , a message appears to confirm whether the setting is OK or not. LOW CUT If OK, push . If you want to redo the setting, push SET OK? Pushing...

  • Page 80: Manual Zero Adjustment (Function F-2)

    6 F 8 A 0 9 9 7 8.2.15 Manual Zero Adjustment (Function F-2) This function is used to perform zero adjustment simply by comparing the output value of the converter with the process value of other instruments without stopping the process of measurement. If zero adjustment described in 8.2.14, “Still Water Zero Adjustment”...

  • Page 81: Function G: Current Output Setting

    6 F 8 A 0 9 9 7 Switch operation Display example Description MANUAL STEP3 Push to move the cursor to the desired digit and push to change the -002.5 symbol or number of the digit. MANUAL STEP4(=END) Pushing shows a message to confirm whether the setting is OK or not.

  • Page 82: Output Low Limit Setting (Function G-2)

    6 F 8 A 0 9 9 7 Switch operation Display example Description ALM 4-20 STEP1 The currently set value (UNDER 3.0mA in this example) appears. UNDER 3mA Then push * Pushing returns you to the setting menu. ALM 4-20 STEP2 The switches at the bottom change.

  • Page 83: Function H: Digital Output Settings

    6 F 8 A 0 9 9 7 You can check or change the output low limit as described below. The following is an example to change the output low limit value from 4.0mA to 2.4mA. Switch operation Description Display example G:4-20mA Select "LOW LIM"...
  • Page 84 6 F 8 A 0 9 9 7 ●Digital output functions Selection items Digital output functions NO USE Not used H ALM High alarm output L ALM Low alarm output HH ALM High-High alarm output LL ALM Low-Low alarm output EMPTY ALM Empty pipe alarm output RNG SIG1...

  • Page 85: Function I: Digital Input Settings

    6 F 8 A 0 9 9 7 Switch operation Display example Description DO1 FUNC STEP2 The switches at the bottom change. are shown.) H ALM At the same time, the cursor appears. (The item indicated by the cursor is highlighted.) Then push DO1 FUNC...
  • Page 86 6 F 8 A 0 9 9 7 ●Digital input control signal You can select the detective level of the digital input, as shown below, to control the totalizer and pulse output. (Only when the digital input function is set for totalizer control input) Selection items Digital input function setting Totalizer control signal...

  • Page 87: Function J: Count And Pulse Settings

    6 F 8 A 0 9 9 7 Switch operation Display example Description DI FUNC STEP4(=END) When you push , a message appears to confirm whether the setting is OK or not. CNT ST/SP If OK, push . If you want to redo the setting, push SET OK? Pushing...
  • Page 88 6 F 8 A 0 9 9 7 ● For pulse width setting mode, you can select either AUTO or MANUAL. Depending on this setting, the pulse width setting varies as shown in the table below: Selection item Pulse width value to be set After the count rate is set, the pulse width is automatically set AUTO to 40% of the period of pulse frequency at 100% output.
  • Page 89 6 F 8 A 0 9 9 7 You can check or change the count rate and pulse width as described below. The following is an example to change the count rate from 0.01m to 0.9 L. Switch operation Description Display example CNT RATE STEP1...

  • Page 90: Function K: Preset Settings

    6 F 8 A 0 9 9 7 Note 1: The units of count rate change cyclically as shown below: m³ Mgl = 1,000,000 gal Note 2: After the count rate is set, related parameters are automatically set under the following conditions: (1) Pulse width When the pulse width setting mode is AUTO:...
  • Page 91 6 F 8 A 0 9 9 7 You can check or change the preset count as described below. The following is an example to change the preset count value from 500 (count) to 1000 (count). Switch operation Display example Description K:PRESET C Select "PRST VAL"...

  • Page 92: Preset Mode (Function K-2)

    6 F 8 A 0 9 9 7 8.2.22 Preset Mode (Function K-2) The preset mode determines the function when the totalizer reaches the preset count. The present mode can be set from the items shown below. ●Preset mode Selection items Preset mode HOLD Holds the output value.

  • Page 93: Function L: High/Low Alarm Settings

    6 F 8 A 0 9 9 7 Switch operation Display example Description OUT MODE STEP2 The switches at the bottom change. are shown.) HOLD At the same time, the cursor appears. (The item indicated by the cursor is highlighted.) Then push OUT MODE STEP3...
  • Page 94 6 F 8 A 0 9 9 7 Switch operation Display example Description H SET STEP2 The switches at the bottom change. are shown.) At the same time, the cursor appears. (The item indicated by the cursor is highlighted.) Then push H SET STEP3 You can continue to change the setting item.

  • Page 95: Function N: Self-Diagnosis Function Settings

    6 F 8 A 0 9 9 7 Switch operation Display example Description H VAL STEP3 Push to move the cursor to the digit you want to change and push +103.0 change the number of the digit. H VAL STEP4(=END) When you push , a message appears to confirm whether the setting is OK or not.

  • Page 96: Self Diagnosis On/Off Setting (Function N-2)

    6 F 8 A 0 9 9 7 Switch operation Display example Description EMPTY STEP1 The current setting (OFF in this example) appears. Then push * Pushing returns you to the menu screen. EMPTY STEP2 The switches at the bottom change. are shown.) At the same time, the cursor appears.

  • Page 97: Converter Alarm (Function N-3)

    6 F 8 A 0 9 9 7 ●Changing the self-diagnosis function setting The following is an example to change the self-diagnosis setting from OFF to ON. Switch operation Display example Description N:SELF CHK Select "SELF CHK" from the setting item 1 EMPTY selection menu.

  • Page 98: Function O: Fixed Value Output Settings

    6 F 8 A 0 9 9 7 ●Changing the converter alarm function The following is an example to change the converter alarm function from WITH EMP to CONV ONLY. Switch operation Display example Description N:SELF CHK Select "CONV ALM" from the setting item 1 EMPTY selection menu.
  • Page 99 6 F 8 A 0 9 9 7 If fixed output is set to ON, Display 2 screen is used to indicate the fixed output in the measurement mode. Operation when fixed output is set to ON Current output Output is the fixed current output value. Pulse output Output is the fixed pulse rate pulse signal.
  • Page 100 6 F 8 A 0 9 9 7 Switch operation Display example Description FIX SET STEP4 When you push , a message appears to confirm whether the setting is OK or not. If OK, push . If you want to redo the setting, push SET OK? Pushing...

  • Page 101: Function P: Other Settings 1

    6 F 8 A 0 9 9 7 Note 1: If you try to set a value outside of the range, 2.4mA or 24mA (in the case of fixed current output) or 10000pps (in the case of fixed pulse output) will be forcibly set. Note 2: The pulse width set in Section 8.2.20 is used for fixed pulse output.
  • Page 102 6 F 8 A 0 9 9 7 * However, if a wrong password is entered when the mode is changed from the measuring mode to the setting mode, *** appears and the password cannot be checked. Switch operation Description Display example PASSWORD The currently set password is displayed as...
  • Page 103 6 F 8 A 0 9 9 7 The password function allows for setting of protection levels. Protection Level 1 Please refer to the menu configuration table in 7.4 “Setting and Calibration Items Selection List” for the functions protected by this level. Protection Level 2 If the password input is incorrect, entering the settings mode is prohibited.
  • Page 104 6 F 8 A 0 9 9 7 Switch Operation Display Example Description PASSWORD STEP5 Push to move the cursor to the digit you want to change and push change the digit. PASSWORD STEP6 When you push , a message appears to confirm whether the setting is OK or not.

  • Page 105: Lcd Adjustment (Function P-2)

    6 F 8 A 0 9 9 7 8.2.29 LCD Adjustment (Function P-2) This section describes how to set the LCD density adjustment value for the converter display. The LCD density can be set in 5 levels. LCD density adjustment level LCD density Light Dark...

  • Page 106: Switch Position Setting (Function P-3)

    6 F 8 A 0 9 9 7 8.2.30 Switch Position Setting (Function P-3) The switch position of the converter display can be set. The position setting of the switch enables the display remains the same in orientation, regardless of which direction relative to the piping the converter is installed.
  • Page 107 6 F 8 A 0 9 9 7 The following is an example to change the switch position setting from BOTTOM to TOP. Switch operation Description Display example P:OTHERS Select "SW POSN" from the setting item 1 PASSWORD selection menu. 2 LCD ADJ 3 SW POSN 4 LCD LT...

  • Page 108: Backlight Adjustment(Function P-4)

    6 F 8 A 0 9 9 7 8.2.31 Backlight Adjustment(Function P-4) Set the LCD backlight adjustment value for the converter display. The LCD density adjustment value is set in 4 steps. LCD backlight adjustment value LCD backlight light dark The backlight adjustment value is set to "1"...

  • Page 109: Function Q: Other Settings 2

    6 F 8 A 0 9 9 7 Function Q: Other Settings 2 8.2.32 UNIT Serial Display (Function Q-1) You can check the serial number of the converter. Example of checking the UNIT serial number Switch operation Display example Description Q:OTHERS2 Select "UNIT SER"...

  • Page 110: Function R: Other Settings 2

    6 F 8 A 0 9 9 7 Function R: Other Settings 2 8.2.34 Short Circuit Detection Function Setting(Function R1) Set whether or not to output an alarm that detects a short circuit in the excitation line and notifies you. When alarm output is set,“EXC CUR SHORT”...

  • Page 111: Function S: Communication Settings

    6 F 8 A 0 9 9 7 Function S: Communication Settings 8.2.35 Modbus Communication Setting (Function S1) This setting is needed when optional Modbus communication board is installed. For details, refer to the instruction manual of Modbus communication board. Note: If communication board is not used, this address setting is not needed.
  • Page 112 6 F 8 A 0 9 9 7 Parameter initial settings list Unless otherwise specified, the default values for each parameter shown below are set when shipped from the factory: Parameter names Default value(SI unit) Default value(English unit) Excitation frequency Value(*1) Value(*1) Flow direction...
  • Page 113 6 F 8 A 0 9 9 7 When parameter value was appointed in order, parameter value may be different from list. Setting values for each meter size Range 1 (SI unit) Range 1 (English unit) Count rate Meter Size Freq (mm) (m3/h)

  • Page 114: Calibration

    6 F 8 A 0 9 9 7 9. Calibration 9.1 Calibration Items When you check or calibrate the converter or check the excitation current, you have to change the mode to the calibration mode. You can check or change the zero and span of the converter and the excitation current value as described below.

  • Page 115: Converter Check / Calibration

    6 F 8 A 0 9 9 7 9.2 Converter Check / Calibration 9.2.1 0 % Flow Rate Calibration (Zero Calibration) Using the converter’s internal calibration circuit, 0% flow rate calibration (hereafter called zero calibration) can be performed. ●Zero point check / calibration Switch operation Display example Description...

  • Page 116: Flow Rate Calibration

    6 F 8 A 0 9 9 7 9.2.2 50 % Flow Rate Calibration Using the converter’s internal calibration circuit, 50% flow rate calibration can be confirmed. 9.2.3 100 % Flow Rate Calibration (Span Calibration) Using the converter's internal calibration circuit, 100% flow rate calibration can be performed. For calibration procedure, see the calibration procedure for 0% flow rate.

  • Page 117: Functional Description

    6 F 8 A 0 9 9 7 10. Functional Description The LF62**B Series Electromagnetic Flowmeter is equipped with two contact output terminals (digital output terminals (DO1, DO2)) and one external input terminal (digital input (DI)), enabling you to use various functions, such as pulse output and alarm output.

  • Page 118: Digital I/O Specifications

    6 F 8 A 0 9 9 7 10.1 Digital I/O Specifications The specifications of the digital I/O terminals for the converter for electromagnetic flowmeter: LF62**B are as follows:  Digital Output 1(DO1 ) Output type: Transistor open collector Number of outputs: Capacity: 30 V dc, 200 mA maximum ...

  • Page 119: Totalizer And Pulse Output

    6 F 8 A 0 9 9 7 10.2 Totalizer and Pulse Output To use the totalizer and pulse output for external use, proceed as follows. Count rate and Pulse Width Setting Set the flow volume per count (pulse) (count rate) and the pulse width. See 8.2.20, “Count rate, Pulse Width Setting Mode and Pulse Width.”...
  • Page 120 6 F 8 A 0 9 9 7 Note 1: Example of count rate setting range: The count rate can be set within the range from the minimum value (36000000 pulse/h) to the maximum value (3.6 pulse/h). (Example) In the case of range 3600m /h (1m /s), Minimum value (for 36000000 pulse/h):...
  • Page 121 6 F 8 A 0 9 9 7 Totalizer Operation ●Operation using the operation switches You can start, stop or clear the totalizer as described below. Switch operation Display example Description PUSH SW Mode change screen CNT: CNT CTRL SET: SET MODE CNT CTRL When you push...
  • Page 122 6 F 8 A 0 9 9 7 Note 1:Since the flow volume direction code is B (Bidirectional forward/reverse automatic selection), •When you select forward/reverse multi-range, forward direction totalized value (count value) is displayed for operation in the forward direction range, and reverse direction totalized value (count value) is displayed for operation in reverse direction range.

  • Page 123: Multi-Range Function

    6 F 8 A 0 9 9 7 10.3 Multi-range Function Four types of multiple ranges shown below can be selected by setting the range type: (1) Unidirectional flow, automatic selection of multiple ranges (4F-0R) (2) Bidirectional flows, automatic selection of multiple ranges (2F-2R) (3) Unidirectional flow, multiple ranges selected by external signal (EXT 2F-0R) (4) Bidirectional flows, multiple ranges selected by external signal (EXT 2F-2R) Proceed as follows to use the multi-range function.
  • Page 124 6 F 8 A 0 9 9 7  Output performance of multi-range functions (1) Automatic selection of unidirectional flow multi-range with an internal signal (4F-0R)  When ranges 1 to 4 are used Output(%) 20mA Range4 Range3 Range2 Range1 Hysteresis (0 to 25%) Flow rate...
  • Page 125 6 F 8 A 0 9 9 7 (2) Automatic selection of bidirectional flows multi-range with an internal signal (2F-2R)  When ranges 1 to 4 are used Output(%) 20mA Range3 Range1 Range4 Range2 Hysteresis Hysteresis Flow rate Range output No.1 Range output No.2 ...
  • Page 126 6 F 8 A 0 9 9 7  Reverse to Forward direction change Forward to Reverse direction change ■ Output(%) Output(%) Low cutoff Low cutoff ×1.25 ×1.25 Low cutoff Low cutoff Flow rate Flow rate Range output No.2 Range output No.2 From reverse range to forward range From forward range to reverse range (3) Remote selection of unidirectional flows multi-range with an external signal (EXT 2F-0R)
  • Page 127 6 F 8 A 0 9 9 7 (4) Remote selection of bidirectional flows multi-range with an external signal (EXT 2F-2R) Output(%) 20mA Range1 Range3 Range4 Range2 Flow rate External signal L level H level H level L level Range output No.1 Range output No.2 ...

  • Page 128: Flow Rate High/Low, High-High/Low-Low Alarm Output

    6 F 8 A 0 9 9 7 10.4 Flow Rate High/Low, High-High/Low-Low Alarm Output To use the flow rate high/low alarm or high-high/low-low alarm output, follow the procedure below. High / Low alarm setting Refer to 8.2.23, “Flow Rate High/Low Alarm and High-High/Low-Low Alarm”...
  • Page 129 6 F 8 A 0 9 9 7  High and Low Limit Alarm Output Performance (Same as for High High/Low Low limit Alarm Output) • Single range performance Output(%) High limit value Hysteresis2.5% Hysteresis2.5% Low limit value Time Alarm output Alarm output Alarm output •...

  • Page 130: Preset Count Function

    6 F 8 A 0 9 9 7 10.5 Preset Count Function When the totalizer count reaches the preset count value, the converter outputs a contact signal. Proceed as follows to use the preset count function. Totalizer setting Refer to 10.2 “Totalizer and Pulse Output” to set necessary settings for totalizer.
  • Page 131 6 F 8 A 0 9 9 7  Preset count output performance (1) The following is an example for totalizer flow counts output in which the totalizer is reset with an external signal (when preset output status level hold mode is set (contact ON)). H level input Counter Reset/Start signal (DI detective level is H)
  • Page 132 6 F 8 A 0 9 9 7 (3) The following is an example for one-shot pulse output. Setting preset count:100 Totalizer flow counts Preset point output For it takes the time set pulse width from the output goes OFF. Input/Output signal time chart * Preset output goes ON when the count value exceeds the preset value of 100 and the preset output goes OFF when its width reaches the set pulse width.

  • Page 133: Remote Zero Adjustment

    6 F 8 A 0 9 9 7 10.6 Remote Zero Adjustment On-stream zero adjustment in a zero flow rate condition can be started with an external signal. To do this, set DI as a zero adjustment start signal. See 8.2.19, “Digital I/O” [Signal Input Timing] H level Zero adjustment...

  • Page 134: Converter Failure Alarm

    6 F 8 A 0 9 9 7 10.8 Converter Failure Alarm If any one of the following errors occurs in a self-diagnosis sequence, the converter issues an alarm using a contact output. ●Self-diagnosis errors Self-diagnosis errors (LCD display) Error items ROM ERROR ROM error RAM ERROR...

  • Page 135: Multiple Range High/Low Limit Alarm Function

    6 F 8 A 0 9 9 7 10.9 Multiple range high/low limit alarm function The procedure to use multiple range high/low limit alarm is shown below. Range setting ・Set the range in accordance with 8.2.9 Span (range) in the following order. 1.
  • Page 136 6 F 8 A 0 9 9 7 Multiple range high/low limit alarm output Flow rate High limit Low limit High-high limit Low-low limit Time DO1 multiple range high limit alarm output DO2 multiple range low limit alarm output Small range (Range2) Large range (Range1) DI range select signal Note 1: Range changes to Small range when range select signal is H level, and to Large range in L...

  • Page 137: Custom Unit Function

    6 F 8 A 0 9 9 7 10.10 Custom unit function (1) Display of flow rate The procedure to display flow rate by the custom unit is shown below. Example : In the case of custom unit [dL(deciliter)/min]. Custom coefficient setting ・Set the custom coefficient in accordance with 8.2.7 “Custom Coefficient Setting”.
  • Page 138 6 F 8 A 0 9 9 7 (2) Span setting Setting of 8.2.7 “Custom Coefficient Setting” and 8.2.8 “Custom Unit Setting” is applied to the custom coefficient and unit same as (1)Display of flow rate. Example : In the case of custom unit [dL(deciliter)/min]. Custom coefficient setting ・Set the custom coefficient in accordance with 8.2.7 “Custom Coefficient Setting”.
  • Page 139 6 F 8 A 0 9 9 7 Note1 : Even if the custom unit is selected, the current output does not change unless the span value is changed. Description Display example In the case of span value = 2.00000 m /min 2.00000 /min...

  • Page 140: Communications Function

    6 F 8 A 0 9 9 7 11. Communications Function The LF62*B Series Electromagnetic Flowmeter uses the HART*1 protocol to transmit digital signals over the 4-20mA output line. The BF100 configurator is used to communicate with the LF62* using the HART protocol.
  • Page 141 6 F 8 A 0 9 9 7 Converter terminal block L1(+) L2(-) AO(+) AO(-) Communication cable and clips BF100 Configurator Figure 11.2 Connections to the Converter Unit － 140 －...

  • Page 142: Notes On Communications

    6 F 8 A 0 9 9 7 11.2 Notes on Communications ● Current output load (1) Load resistance: 240 to 750 Ω (including the communications line resistance) (2) Load capacitance: 0.25µF maximum (including the communications line capacitance) (3) Load inductance:4mH maximum (including the communications line inductance) (The maximum cable length is approx.

  • Page 143: Self Diagnosis And Alarms

    6 F 8 A 0 9 9 7 12. Self Diagnosis and Alarms 12.1 Self-Diagnosis The converter has a self-diagnosis function to detect errors, such as setting error, I/O error or converter hardware failure, and shows the resulting error or alarm messages on Display 2 of the screen or on the configurator through communications.
  • Page 144 6 F 8 A 0 9 9 7 ● High/low alarm, high-high/low-low alarm, empty pipe alarm One of the following messages appears if the flow rate reading goes out of the set range or an empty alarm is generated. If the high or low limit alarm ON/OFF status is set to OFF, its alarm function (high or low) is disabled.
  • Page 145 Internal components or ROM error ROM ERROR printed-circuit board must be RAM error RAM ERROR repaired or replaced. Contact Toshiba’s salesperson in PARAMETER System parameter error in the memory charge or distributor in your area. FAILURE EXC CUR Connect the excitation cables Excitation cables are not connected.

  • Page 146: Output Status For Errors And Alarms

    6 F 8 A 0 9 9 7 12.2 Output Status for Errors and Alarms Error indication Measured value Current output Totalization Remarks indication (4-20mA) pulse output ROM ERROR After power-up, (Note 3) Stopped － (Note 1) no measurement starts. After power-up, (Note 3) Stopped...

  • Page 147: Maintenance And Troubleshooting

    6 F 8 A 0 9 9 7 13. Maintenance and Troubleshooting CAUTION  Do not conduct wiring work when  Do not touch the LF62*B main body power is applied. when high temperature fluid is being measured. Wiring while power is The fluid raises the main applied can cause electric body temperature and can...
  • Page 148 6 F 8 A 0 9 9 7 (2) Loosen the screws and remove the cover panel. (Be careful not to misplace the screws.) Cover panel (3) Loosen all six screws(8 screws if there is an option board) and lift the board unit. (Be careful not to misplace the screws.) A fuse is installed on the back of the board unit.
  • Page 149 LCD's display density. If the display is still not improved, the display unit comes to the end of its life. Please replace the display unit with a new one. In order to use the display unit stably for a long time, it is preferable to replace it early. For inspection and replacement, please contact your nearest Toshiba representative.

  • Page 150: Troubleshooting

    Is the error message Wait for 10 minutes being displayed? before turning the device on again. In case nothing changes, contact your nearest Toshiba representative. Use the correct Are power supplies power supply for correct for each device? each device.

  • Page 151: Flow Rate Indication Is Not Correct

    Is accuracy calculated as follows? No Calculate as shown (Measured flow rate)-(Actual flow rate) ×100% on the left. (Actual flow rate) Contact your nearest Toshiba representative. － 150 －...

  • Page 152: Flow Rate Indication Is Not Stable

    Contact your nearest Toshiba representative. Note 1: If the detector tube is not filled with operating fluid, the flow is indefinite and measurement is impossible. Be sure to fill the detector tube with operating fluid before starting measurement.

  • Page 153: The Switches Become Inoperable

    Operate the EMF object such as metal converter blocking plate placed opposing to the light from the the control panel? reflecting object by standing in-between the control panel and the reflecting object. Contact your nearest Toshiba representative. － 152 －...

  • Page 154: Principle Of Operation

    6 F 8 A 0 9 9 7 14. Principle of Operation The operating principle of the electromagnetic flowmeter is based on Faraday's Law of electromagnetic induction and it is designed to measure the volumetric flow rate of fluid. An insulated pipe of diameter D is placed vertically to the direction of a magnetic field with flux density B (see Figure 14.1).

  • Page 155: Specifications

    Accuracy: ±0.2 % of Rate* * This pulse output error result is established under standard operating conditions at Toshiba's admitted flow calibration facility. * Individual meter measurement error may vary up to ±0.5% of Rate at 0.5m/s or more and ±0.3% of rate 1mm/s at 0.5m/s or less.
  • Page 156 50 ～100 % ±0.8 % FS ±0.8 % of rate （Note）Accuracy under the basic operation conditions with Toshiba calibration facility) Conductivity: 3μS/cm or more (Combined detector : LF650 ) 5μS/cm or more (Combined detector : LF410, LF430, LF450, LF470, LF490, GF63*, LF660, GF642 ) Ambient temperature: -20 to +60℃...
  • Page 157 6 F 8 A 0 9 9 7  Output Current output: 4 to 20mAdc (load resistance 750Ω or less) Digital output 1: Output type: Transistor open collector Capacity: 30Vdc, Max 200mA Number of output points: Digital output 2: Output type: Semiconductor contact signal output (no polarity) Capacity:...
  • Page 158 6 F 8 A 0 9 9 7  Coating Acrylic resin-baked coating, metallic-gray colored  Cable connection port G(PF) 1/2 thread (standard) Cable glands provided. ･ Applicable cable diameter: 9 to 14 mm ･ Material: Nylon 66  Surge arresters Surge arresters are installed in the power supply and current signal output circuit.

  • Page 159: Model Number Table

    6 F 8 A 0 9 9 7 15.2 Model Number Table Converter Model Number Table Model number Specification code Contents 1 2 3 4 5 10 11 12 13 14 L F 6 2 Electromagnetic flowmeter converter Combined type ○...

  • Page 160: Outline Drawing

    6 F 8 A 0 9 9 7 16. Outline Drawing 16.1 LF620*B Type Weight : Approx. 2.0 kg unit: mm Detector dimensions: Check the dimensions of the detector with the instruction manual of the combined detector. Figure 16.1 Outline of LF620*B Type －...

  • Page 161: Lf622*B Type

    6 F 8 A 0 9 9 7 16.2 LF622*B Type Weight : Approx. 3.0 kg (including the installation plate). unit: mm 4-φ11 hole, or M10 Panel or wall mounting dimensions Figure 16.2 Outline of LF622*B Type － 160 －...

  • Page 162: Appendix 1 Reverse Lookup Of Functions Based On Applications

    6 F 8 A 0 9 9 7 Appendix Appendix 1 Reverse Lookup of Functions based on Applications (1) Use the converter for flow applications opposite the direction indicated in the arrow nameplate. Set the Flow Direction to SWITCH. Refer to 8.2.5 Flow Direction Setting (Function A-4) for more details (2) Use a unique unit not built in the converter.
  • Page 163 6 F 8 A 0 9 9 7 Afterwards, set the Digital Output to PRESET C. Refer to 8.2.18 Digital Output (Function H) and 10.5 Preset Count Function (Function K-2) for more details. (7) Check the instantaneous flow rate and the totalized flow volume in both the forward and reverse flow directions at the same time Set the instantaneous flow rate unit in Display 1.

  • Page 164: Appendix 2 Factory Default/ Standard Values

    6 F 8 A 0 9 9 7 Appendix 2 Factory Default/ Standard Values Parameter names Default value(SI unit) Default value(English unit) Changed value Excitation frequency Value(*1) Value(*1) Flow direction NORMAL NORMAL Display 1 gal/min Display 2 COUNT B Display digit setting 1/1000 1/1000 (for Display 1 and Display 2)
  • Page 165 6 F 8 A 0 9 9 7 When parameter value was appointed in order, parameter value may be different from list. Setting value in each size Range 1 (SI unit) Range 1 (English unit) Count rate Meter Size Freq (mm) (m3/h) (m/s)
  • Page 166 6 F 8 A 0 9 9 7 Write down the address and phone number of the distributor from which you purchased this product, the product code, SER.NO. and so on. Distributor Address Name Phone number （ ） － Product code LF SER.NO.

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Lf622 b series

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