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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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Table of Contents
Troubleshooting
Related Manuals for Toshiba LF622 B Series
Summarization of Contents
SAFETY PRECAUTIONS
Explanation of Signal Words and Safety Symbols
Defines WARNING and CAUTION signal words and safety symbols used in the manual.
Safety Precautions for Installation and Wiring
Provides essential safety guidelines for installing and wiring the converter.
Safety Precautions for Maintenance and Inspection
Outlines safety measures for maintaining and inspecting the converter.
Usage Limitations and Warranty
Specifies product usage limitations and defines the warranty and liability terms.
Handling Precautions
Storage and Installation Guidelines
Details proper storage conditions and installation site considerations for optimal performance.
Wiring and Cable Management
Covers correct wiring practices, cable selection, and secure connections.
Operational Environment and Precautions
Advises on environmental factors and precautions during operation and maintenance.
Product Inspection and Storage
Product Inspection Procedures
Instructions for checking the flowmeter package contents and for visual inspection.
Storage Conditions
Specifies recommended environmental conditions and precautions for storing the flowmeter.
Overview
Features and Intelligent Functions
Describes key features like LCD display, infrared switches, and communication protocols.
Names of Parts
Appearance of LF620*B and LF622*B Types
Illustrates and labels the external components of the LF620*B and LF622*B converters.
Terminal Block Construction
Details the layout and function of the terminal blocks on the converter.
Installation
Installation Safety Precautions
Highlights critical safety warnings to be observed during the installation process.
Installation Location Selection
Provides guidelines for choosing an appropriate and safe installation location.
Installation Procedures
Describes the methods for installing the LF620*B and LF622*B converter types.
Wiring
Notes on Wiring
Presents essential safety notes and precautions for performing wiring work.
Cables and Connections
Lists required cable types and details connection procedures for various signals.
Grounding Procedures
Explains the correct methods for grounding the flowmeter and its components.
Terminal Treatment and Cable Connection
Details how to prepare cable ends and connect them securely to the terminal blocks.
Digital I/O Connections
Describes how to connect digital input and output signals for various functions.
Operation
Preparatory Checks
Outlines essential checks before starting flow measurement operations.
Zero Adjustment Procedures
Explains how to perform zero adjustment for accurate flow measurements.
LCD Display and Controls
Display and Control Panel Overview
Identifies the LCD display and control keys and their basic functions.
Basic Operations and Mode Changes
Details how to navigate between measurement, setting, and calibration modes.
Display Format Options
Describes various display formats for flow rate, totalized values, and custom units.
Configuration Items Selection Table
Basic Configuration Menu
Shows the menu structure for basic parameter checking and changing.
Detailed Configuration Menu
Expands the menu structure for detailed parameter checking and changing.
Parameter Settings
Parameter Setting Items Overview
Lists all settable parameters and their corresponding functions.
Check and Change Parameters
Explains how to navigate menus to check and modify parameter settings.
Detector Configuration (Functions A)
Covers settings related to the detector, such as exciting current, meter size, and frequency.
Display and Unit Configuration (Functions B)
Details settings for display units, custom coefficients, and custom units.
Range and Hysteresis Settings (Function C)
Explains how to set range types, spans, and hysteresis values.
Filter and Cutoff Settings (Functions D, E)
Covers damping constants, rate-of-change limits, and low cutoff settings.
Zero Adjustment Settings (Function F)
Details procedures for still water and manual zero adjustments.
Output and Alarm Settings (Functions G, H, L, M)
Explains settings for 4-20mA alarm output, output limits, digital outputs, and alarms.
Input, Count, Pulse, and Preset Settings (Functions I, J, K)
Covers digital input functions, count rate, pulse width, and preset settings.
Diagnostic, Fixed Output, and Other Settings (Functions N, O, P, Q, R, S)
Details self-diagnosis, converter alarms, fixed output, password, LCD, switch, backlight, unit, detector, short circuit, and communication settings.
Parameter initial settings list
Default SI Unit Values
Lists default parameter values configured for SI units at the factory.
Default English Unit Values
Lists default parameter values configured for English units at the factory.
Specifications
General Specifications
Provides overall specifications including measuring ranges and accuracy for various detectors.
Input and Output Specifications
Details the electrical specifications for the converter's input and output signals.
Communication, Structure, and Housing Specs
Covers communication protocols, housing material, coating, and surge arresters.
Functional Description
Digital I/O Functions Overview
Explains the functions available through digital input/output terminals.
Totalizer and Pulse Output Functions
Describes how to use the totalizer and pulse output features for external use.
Multi-range Function
Details the configuration and operation of multi-range measurement capabilities.
Alarm Output Functions
Explains how high/low and high-high/low-low alarms function and their output.
Preset Count Function
Covers functionality related to setting a preset count and triggering an output signal.
Remote Adjustment Functions
Describes how to perform remote zero adjustment and select fixed value outputs.
Converter Failure Alarm
Explains the converter's self-diagnosis function and alarm outputs for errors.
Custom Unit Function
Details how to configure and display flow rates using custom units.
Communications Function
Connections with Configurator
Provides instructions for connecting the BF100 configurator for parameter settings.
Notes on Communications
Offers important considerations for communication setup, including load and interference.
Self Diagnosis and Alarms
Self-Diagnosis Error Messages
Lists potential error messages from self-diagnosis and their corrective actions.
Output Status for Errors and Alarms
Describes how output signals (current, totalization) behave during errors and alarms.
Maintenance and Troubleshooting
Maintenance Procedures
Covers calibration, fuse replacement, display unit check, and component lifespan.
Troubleshooting Guide
Provides diagnostic flowcharts for common issues like no flow rate indication or incorrect readings.
Principle of Operation
Faraday's Law and Electromagnetic Induction
Explains the fundamental operating principle based on Faraday's Law.
Model Number Table
Converter Model Number Configuration
Details the model number structure and selectable specification codes.
Outline Drawing
LF620*B Type Dimensions
Shows the physical dimensions and mounting details for the LF620*B type.
LF622*B Type Dimensions
Illustrates the physical dimensions and mounting details for the LF622*B type.
Appendix
Reverse Lookup of Functions based on Applications
Provides guidance on configuring functions for specific flow applications.
Factory Default/ Standard Values
Parameter Default Settings
Lists factory default values for all configurable parameters in SI and English units.
Meter Size Specific Settings
Details default setting values for various parameters based on meter size.
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