Electromagnetic Flowmeter Converter LF620F Type, LF622F Type

Electromagnetic Flowmeter Converter LF620F Type, LF622F Type
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Electromagnetic Flowmeter Converter
LF620F Type, LF622F 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.
• 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.
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NOTICE
We thank you very much for your purchase of our LF62*F series electromagnetic flowmeter
converter.
Integral type converter LF620F
Separate type converter LF622F
This instruction manual describes the notes on using an electromagnetic flowmeter
converter, installation, configuration and maintenance. It is intended for the personnel in
charge of installation, operation and maintenance.
To use this product properly and safely, read this manual carefully before using this product.
After reading this manual, store it in a place where it can be referred to
whenever needed.
About a PROFIBUS or Modbus communication function, please read each instruction
manual.
This manual uses the following markers to identify the integral type or separate type when it
describes items specific to the integrated type or separate type. Items without this marker are
common items to the integral type and separate type.
Integral type converter LF620F:
LF620F
Separate type converter LF622F:
LF622F
Toshiba LF62*F 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.
About Safety Precautions
Read the Safety Precautions described at the front carefully and understand the contents
before using this product.
The “Safely symbols” used in the “Safety Precautions” are shown in a location such as
in the margin to the left of the corresponding commentary in the main text.
NOTES
1. The reproduction of the contents of this Manual in any form, whether wholly or in
part, is not permitted without explicit prior consent and approval.
2. The information contained in this Manual is subject to change or review without
prior notice.
3. Be sure to follow all safety, operating and handling precautions described in this
Manual and the regulations in force in the country in which this product is to be
used.
First Edition
July, 2009
Second Edition Oct., 2010
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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.
Make yourself familiar with signal words and symbols used for safety signs and labels. Then read the
safety precautions that follow to prevent an accident involving personal injury, death or damage to
property.
Explanation of signal words
The signal word or words are used to designate a degree or level of hazard seriousness.
The signal words used for the product described in this manual are WARNING and CAUTION.
WARNING
Indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION
Indicates a potentially hazardous situation which, if not avoided,
may result in minor to moderate injuries or in property
damage.
Notes:
1 “Serious injury” refers to an injury such as loss of sight, physical damage, burns (high
temperature or low temperature) electric shock, bone fracture and poisoning and the after
effect of the injury remains or the injury requires hospitalization or long periods of
outpatient treatment.
2 “Minor to moderate injuries” refers to burns, electric shocks, and so on, that do not require
the injured person to be hospitalized or go to a hospital for a long period of time for
medical treatment. “Property damage” includes all kinds of damage to property, equipment
or materials.
Safety symbols
The following symbols are used in safety signs and labels affixed to a product and/or in the manual for
giving safety instructions.
Indicates an action that is prohibited. Simply DON’T do this action.
The prohibited action is indicated by a picture or text inside or next to the circle
Indicates an action that is mandatory. DO this action.
The mandatory action is indicated by a picture or text inside or next to the circle.
Indicates a potential hazard. The potentially hazardous situation is
indicated by a picture or text inside or next to the triangle.
Color explanation
WARNING
Background color: Yellow and Red,
Border: Black, Picture display: Black
CAUTION
Background color: Yellow,
Border: Black, Picture display: Black
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SAFETY PRECAUTIONS (continued)
Safety Precautions for Hazardous Locations
WARNING
„ Do not disconnect while circuit is live unless location is known to be nonhazardous.
Live part of electric circuit or a high temperature department can cause explosion.
DON’T
„ Do not modify or disassemble the enclosure.
Strength degradation and defects of enclosure can cause explosion.
DON’T
„ Do not use parts of other products.
Protective performance degradation for hazardous location can cause explosion.
DON’T
„ Do not touch circuits until assembly of all components is over.
Protective performance degradation for hazardous location can cause explosion.
DON’T
„ Install per the National Electrical Code for the US (NEC, ANSI/NFPA 70) and the
Canadian Electrical code for Canada (CEC, CAN/CSA-C22.1) and the drawing
3S8A2676,3S8A2677 (Refer to Appendix 2.).
Unsuitable conduit connections for hazardous location can cause explosion.
DO
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Safety Precautions for Installation and Wiring
CAUTION
„ Install a switch and fuse to isolate the
LF620F and LF622F from mains power.
DO
„ Use an appropriate device to carry and install the
LF620F and LF622F.
Power supply from mains
power can cause electric
shock or circuit
break-down.
„ Use crimped terminal lugs for the terminal
board and GND terminal.
DO
Loose connections can
cause electric shock, fire
from excessive current or
system malfunction.
Wiring while power is
applied can cause electric
shock.
Modifying or disassembling this
product can cause
electric shock,
malfunction of or damage to this
DON’T
product.
„ Ground the LF620F and LF622F independently
from power equipment. (100 ohm or less
ground resistance)
Operating this product
without grounding can cause
electric shock or malfunction.
DO
■Do not work on piping and wiring with wet hands.
„ Turn off mains power before working on
pipes.
DO
DO
„ Do not modify or disassemble the LF620F and
LF622F unnecessarily.
„ Turn off mains power before conducting
wiring work.
DO
If this product falls to the ground,
injury, or malfunction of or damage to
the product, can be caused.
Working on pipes while
power is applied can
cause electric shock.
Wet hands may result in electric
shock.
DON’T
„ Do not conduct wiring work with bare hands.
DON’T
Remaining electric
charge even if power is
turned off can still cause
electric shock.
The label shown left is placed near the terminal board for power supply
on the converter.
Be alert to electric shock.
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SAFETY PRECAUTIONS (continued)
Safety Precautions for Maintenance and Inspection
CAUTION
„ Do not touch the LF620F main body
when high temperature fluid is
being measured.
The fluid raises the main
body temperature and can
cause burns when touched.
DON’T
„ Do not conduct wiring work when power is
applied.
Wiring while power is applied can
cause electric shock.
DON’T
„ Do not conduct wiring work with wet
hands.
DON’T
The label shown left is placed near
the terminal board for power input.
(A black border and symbol on
yellow triangle)
Be alert to electric shock.
Wet hands may result in
electric shock.
„ Do not use a fuse other than the one
specified.
Using a fuse other than the
one specified can cause
system failure, damage or
malfunction.
DON’T
Use a rated fuse as follows:
Fuse rating:
• 1A/250V for 100 to 240Vac or 110Vdc
• 2A/250V for 24 V dc
Dimensions:
Diameter 5.2 mm × 20 mm
Melting time characteristic:
• Time Lag Fuses for 100 to 240Vac or 110Vdc
• Normal blow type for 24 V dc
Usage limitation
(1) This product is not manufactured for applying to a system requiring safety directly involved
human life as follows. Please contact your nearest Toshiba reprehensive if there is a possibility of
using this product for such use.
-
Main control systems of nuclear power plants, safety protection systems in nuclear
facilities or other important systems requiring safety
-
Medical control systems relating to life support
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.
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Handling Precautions
To obtain the optimum performance from the LF620F and LF622F converter for years of continuous
operation, observe the following precautions.
(1) Do not store or install the flowmeter in :
・Where there is direct sunlight.
・Where excessive vibration or mechanical shock occurs.
・Where high temperature or high humidity conditions obtain.
・Where corrosive atmospheres exist.
・That can be places submerged under water.
・Where there is a sloped floor. To put the flowmeter temporarily on the floor, place it carefully
with something, such as a block, to support it so that the flowmeter will not topple over.
・Places where there is following factors.
■Factors to impede infrared switch to operate properly
・Intense light such as direct sunlight and reflected sunlight by window glass or metal plate
・Place where brightness changes suddenly such as ON/OFF of lighting
・Dense smoke or steam near the control panel
・Those attached on the control panel such as rain (dew drop), snow, ice, mud and oil, and
haze due to their attachment
・Light reflecting object near the control panel, or reflecting object such as metal plate placed
opposing to the control panel
When any of above factors is considered, take a measure for the proper operation of infrared
switch such as to place a cover or to secure a space for at least a person to stand in front of the
control panel.
When unable to avoid above factors, operate the EMF converter removing the factor by
covering the control panel by hand so that light does not shine on it, by cleaning those attached
on the control panel, or by standing in-between the reflecting object and the control panel to
block the light.
(2) Wire cables correctly and securely.
Be sure to ground at the combined converter side (grounding resistance 100Ω or less). Avoid a
common ground used with other equipment where earth current may flow. An independent
ground is preferable
(3) Select cable paths away from electrical equipment (motors, transformers, or radio transmitters),
which causes electromagnetic or electrostatic interference.
(4) The cable lead-in section must be tightened securely to keep air tightness.
(5) If the inside of the converter or cable terminals are wetted or humidified, it may cause insulation
deterioration, which can result in fault or noise occurrence. So do not conduct wiring in the
open air on rainy days.
Also, be careful not to wet down the converter even in the case of indoor wiring, and complete
wiring work in a short period of time.
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Handling Precautions (continued)
(6) Observe the following precautions when you open the converter housing cover:
• Do not open the cover in the open air unprotected against rain or wind. This can cause
electric shock or cause damage to the flowmeter electronics.
• Do not open the cover under high ambient temperature or high humidity
conditions or in corrosive atmospheres. This can cause deterioration of system
accuracy or cause damage to the flowmeter electronics.
(7) Since a varistor is built in converter, do not conduct a withstand voltage test for the
converter.
In addition, the voltage for checking the insulation of the converter must be 250VDC or
lower.
(8) This product may cause interference to radio and television sets if they are used near the
installation site. Use metal conduits etc. for cables to prevent this interference.
(9) Radio transmitters such as transceivers or cellular phones may cause interference to the
flowmeter if they are used near the installation site. Observe the following precautions when
using them:
• Close a transmitter cover before using a transceiver.
• Do not use a transceiver whose output power is more than 5 W.
• Move the antenna of a transceiver or a cellular phone at least 20 inch (50 cm) away from the
flowmeter and signal cables when using it.
• Do not use a radio transmitter or a cellular phone near the flowmeter while it is
operating online. The transmitter or cellular phone’s output impulse noise may interfere with
the flowmeter.
• Do not install a radio transmitter antenna near the flowmeter and signal cables.
(10) For reasons of flowmeter failure, inappropriate parameters, unsuitable cable
connections or poor installation conditions, the flowmeter may not operate properly. To
prevent any of these problems causing a system failure, it is recommended that you have
preventive measures designed and installed on the flowmeter signal receiving side.
(11) For piping and installation of the combined detector, check the model number of
detector and read the instruction manual of the relevant detector.
* We assume no responsibility for nonconformity caused by violation of precautions described in
this manual or used in violation of the installation method and the operation method stipulated in
a relevant ordinance or other regulations.
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Table of Contents
1.
Product Inspection and Storage ........................................................................................................................... 11
1.1 Product Inspection......................................................................................................................................... 11
1.2 Storage.......................................................................................................................................................... 11
2.
Overview ................................................................................................................................................................. 12
3.
Names of Parts ....................................................................................................................................................... 13
3.1 Appearance ................................................................................................................................................... 13
3.1.1 Appearance of LF620F Type........................................................................................................... 13
3.1.2 Appearance of LF622F Type........................................................................................................... 14
3.2 Construction of the terminal blocks................................................................................................................ 15
3.2.1 Terminal Block Construction of LF620F Type ................................................................................. 15
4.
Installation .............................................................................................................................................................. 16
4.1 Notes on Selecting the Installation Location.................................................................................................. 17
4.2 How to Install................................................................................................................................................. 18
4.2.1 LF620F Type ................................................................................................................................... 18
4.2.2 LF622F Type ................................................................................................................................... 18
5.
Wiring ...................................................................................................................................................................... 21
5.1 Cables ........................................................................................................................................................... 23
5.2 External Device Connections and Grounding ................................................................................................ 24
5.2.1 LF620F Type ................................................................................................................................... 24
5.2.2 LF622F Type ................................................................................................................................... 25
5.3 Notes on Wiring............................................................................................................................................. 26
5.3.1 Notes on Instrumentation-Converter Wiring .................................................................................... 26
5.3.2 Notes on Wiring of the LF622F Type............................................................................................... 26
5.4 Wiring ............................................................................................................................................................ 27
5.4.1 Grounding........................................................................................................................................ 27
5.4.2 Terminal Treatment of Cables ......................................................................................................... 29
5.4.3 Cable Connection ............................................................................................................................ 31
5.5 Digital I/O Connections.................................................................................................................................. 32
6.
Operation ................................................................................................................................................................ 33
6.1 Preparatory check ......................................................................................................................................... 33
6.2 Zero Adjustment ............................................................................................................................................ 34
7.
LCD Display and Controls ..................................................................................................................................... 35
7.1 Name and Function of Each Part of LCD Display.......................................................................................... 35
7.2 Display Format .............................................................................................................................................. 38
7.3 Basic operations............................................................................................................................................ 42
7.3.1 Mode Change.................................................................................................................................. 42
7.3.2 Setting and Calibration .................................................................................................................... 46
7.4 Configuration Items Selection Table.............................................................................................................. 50
7.5 Password input.............................................................................................................................................. 52
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8.
Parameter Settings................................................................................................................................................. 54
8.1 Parameter Setting Items................................................................................................................................ 54
8.2 Check/Change of Parameters ....................................................................................................................... 55
8.2.1 Menu Configuration Selection Screen ............................................................................................. 55
8.2.2 Exciting Current Value..................................................................................................................... 56
8.2.3 Meter Size ....................................................................................................................................... 57
8.2.4 Exciting Frequency.......................................................................................................................... 59
8.2.5 Flow Direction Setting...................................................................................................................... 60
8.2.6 Display Setting ................................................................................................................................ 61
8.2.7 Custom Coefficient Setting .............................................................................................................. 65
8.2.8 Custom Unit Setting......................................................................................................................... 66
8.2.9 Span (Range) .................................................................................................................................. 67
8.2.10 Damping Constant........................................................................................................................... 73
8.2.11 Rate-Of-Change Limit and Control Limit Time................................................................................. 74
8.2.12 Low Cutoff ....................................................................................................................................... 76
8.2.13 Display Low Cutoff........................................................................................................................... 77
8.2.14 Still Water Zero Adjustment............................................................................................................. 78
8.2.15 Manual Zero Adjustment ................................................................................................................. 79
8.2.16 4−20mA Alarm Output Setting ........................................................................................................ 80
8.2.17 Output Low Limit Setting ................................................................................................................. 81
8.2.18 Digital Output................................................................................................................................... 82
8.2.19 Digital Input ..................................................................................................................................... 84
8.2.20 Count Rate (Pulse Rate), Pulse Width Setting Mode and Pulse Width ........................................... 86
8.2.21 Preset Count ................................................................................................................................... 89
8.2.22 Preset Mode .................................................................................................................................... 91
8.2.23 Flow Rate High/Low Alarm and High-High/Low-Low Alarm............................................................. 92
8.2.24 Empty Pipe Alarm Setting................................................................................................................ 94
8.2.25 Mag-Prover-Self Diagnosis ON/OFF Setting ................................................................................... 95
8.2.26 Converter Alarm .............................................................................................................................. 96
8.2.27 Fixed Value Output.......................................................................................................................... 97
8.2.28 Password Setting........................................................................................................................... 100
8.2.29 LCD Adjustment ............................................................................................................................ 102
8.2.30 Switch Position Setting .................................................................................................................. 103
8.2.31 Communication Setting ................................................................................................................. 104
8.2.32 Detector type ................................................................................................................................. 104
8.3 Parameter initial settings list........................................................................................................................ 105
9.
Mag-Prover-Calibration........................................................................................................................................ 107
9.1 Calibration Items.......................................................................................................................................... 107
9.2 Calibration Using Mag-Prover’s Built-In Signal Source................................................................................ 108
9.2.1 0 % Flow Rate Calibration (Zero Calibration) ................................................................................ 108
9.2.2 50 % Flow Rate Calibration ........................................................................................................... 109
9.2.3 100 % Flow Rate Calibration (Span Calibration) ........................................................................... 109
9.2.4 Checking the Excitation Current .................................................................................................... 109
10. Functional Description......................................................................................................................................... 110
10.1 Digital I/O Specifications.............................................................................................................................. 111
10.2 Totalizer and Pulse Output .......................................................................................................................... 112
10.3 Multi-range Function.................................................................................................................................... 116
10.4 Flow Rate High/Low, High-High/Low-Low Alarm Output ............................................................................. 121
10.5 Preset Count Function................................................................................................................................. 123
10.6 Remote Zero Adjustment............................................................................................................................. 128
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10.7
10.8
10.9
10.10
Remote Selection of Fixed Value Output..................................................................................................... 128
Converter Failure Alarm .............................................................................................................................. 129
Multiple range high/low limit alarm function ................................................................................................. 130
Custom unit function.................................................................................................................................... 132
11. Communications Function .................................................................................................................................. 135
11.1 Connections with HHT Terminal .................................................................................................................. 135
11.2 Procedure for Communications with HHT ................................................................................................... 136
11.3 Notes on Communications .......................................................................................................................... 137
12. Self Diagnosis and Alarms .................................................................................................................................. 138
12.1 Self-Diagnosis ............................................................................................................................................. 138
12.2 Output Status for Errors and Alarms............................................................................................................ 141
13. Maintenance and Troubleshooting ..................................................................................................................... 142
13.1 Maintenance................................................................................................................................................ 143
13.2 Troubleshooting........................................................................................................................................... 145
13.2.1 Flow rate is not indicated............................................................................................................... 145
13.2.2 Flow rate indication is not correct. ................................................................................................. 146
13.2.3 Flow rate indication is not stable.................................................................................................... 147
13.2.4 When switch operation is unable ................................................................................................... 148
14. Principle of Operation.......................................................................................................................................... 149
15. Specifications ....................................................................................................................................................... 150
15.1 Specifications .............................................................................................................................................. 150
15.2 Model Number Table ................................................................................................................................... 153
16. Outline Drawing.................................................................................................................................................... 154
16.1 LF620F Type ............................................................................................................................................... 154
16.2 LF622F Type ............................................................................................................................................... 155
Appendix1...................................................................................................................................................................... 156
Appendix2...................................................................................................................................................................... 158
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1. Product Inspection and Storage
1.1 Product Inspection
LF62*F electromagnetic flowmeter is shipped in a cardboard container filled with shock-absorbing
materials. Open the package carefully and check as follows:
„ Make sure the following items are included in the package.
For the integral type (when a converter and detector are united)
Electromagnetic flowmeter main unit ------------------------------------------------- 1 unit
Instruction manual----------------------------One each for the converter and detector
LF620F
For the separate type (when a converter and detector are separated)
Electromagnetic flowmeter converter------------------------------------------------- 1 unit
Electromagnetic flowmeter detector -------------------------------------------------- 1 unit
Instruction manual-------------------------- Once each for the converter and detector
LF622F
For a converter unit only
Electromagnetic flowmeter converter--------------------------------------------- One unit
Instruction manual -------------------------------------------------- One for the converter
LF622F
„ 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
To store the electromagnetic flowmeter after opening the package, select a storing place as follows
and keep it under the conditions described below:
CAUTION
(1) Avoid places where there is direct sunlight, rain or wind.
(2) Store the product in a well-ventilated place. Avoid places of extremely high humidity or
extremely high or low temperature. The following environment is recommended:
• Humidity range: 10 to 90% RH (no condensation)
• Storage temperature: - 13 to 149°F (-25 to +65℃)
(3) Avoid places where vibrations or mechanical shock occur.
(4) If it leaves the cover of converter open while being stored, gradual deterioration of circuit
isolation can be caused. And then don’t open the cover until it is connected with wires.
(5) To put the flowmeter temporarily on the floor, place it carefully with something, such as
stopper, to support it so that the flowmeter will not topple over.
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2. Overview
The LF620F and LF622F electromagnetic flowmeter converter can be use in the following
hazardous (classified) locations.
ClassⅠ, Division 2, Groups A, B, C and D,
ClassⅡ, Division 2, Groups E, F and G
ClassⅢ
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.
The converter sends out a signal to drive the detector exciting coil, which generates a magnetic field inside
the detector. The converter receives the signal electromotive force obtained by the detector, as signal
electromotive force in proportion to the generated flow rate in the fluid using Faraday's law of
electromagnetic induction. After carrying out operation, the converter converts the signal electromotive
force to an analog signal instrumentation unified signal output and displays the status, as a flow rate value.
Features
With a linear relationship between the flow rate and output signal, the electromagnetic flowmeter is
featured as an easy-to-read indicator. In addition to this feature, it has the following outstanding features:
(1) Wide flow velocity range setting, such as a flow velocity range of 0~0.1 and 0~10m/s, is achieved.
(2) The unique Noise-Sentry filtercircuit and its advanced Arithmetic Logic (ALU) enables you to
obtain a stable output.
(3) Full graphic electronically rotatable LCD that enables display of a large amount of information
• With a large amount of a maximum of 9 characters x 7 lines, you can easily check various
displays including bar graphs and alarm indications.
• The backlight allows you to read the indicator easily.
(4) Use of infrared switches
• Use of infrared switches allows you to perform various operations, without opening the converter
housing cover.
(5) Intelligent functions
• The widely used HART protocol*1 communications system is used as a standard feature.
• This product supports PROFIBUS*2 communication by option.
• This product supports Modbus*3 communication by option.
* 1 HART protocol:
“HART” stands for Highway Addressable Remote Transducer and is a communication protocol
recommended by HCF (HART communication Foundation) for industrial sensors.
* 2 PROFIBUS:
PROFIBUS, which stands for PROCESS FIELDBUS, is a kind of field bus that is approved by
nternational standard IEC61158. The electromagnetic flowmeter supports PRFIBUS PA for process
automation.
*3 Modbus
Modbus Protocol is the communication protocol that Modicon Inc. (AEG Schneider Automation
International S.A.S.) developed for PLC
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3. Names of Parts
IMPORTANT
The cable connections are not provided in the conduit port of this apparatus.
Please prepare yourself for the cable connections, which could be used in Division2 hazardous locations.
3.1 Appearance
3.1.1 Appearance of LF620F Type
LF620F
Display section
Converter case
Control key
(Control panel)
Converter
Converter installation screw
Ground terminal
Detector
Figure 3.1.1
Appearance of LF620F
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Arrow nameplate
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3.1.2 Appearance of LF622F Type
LF622F
Display section
Converter installation screw
Converter case
Control key
(Control panel)
for excitation cable
for signal cable
Ground terminal
for power cable
for signal cable
Figure 3.1.2
Appearance of LF622F
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for flow rate signal cable
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3.2 Construction of the terminal blocks
3.2.1 Terminal Block Construction of LF620F Type
When you remove the terminal block cover shown in the figure "Appearance of LF620F and LF622F
Type", you can see the converter terminal block as shown below.
CAUTION
LF620F
The label shown left is placed near the terminal board
for power supply to this equipment.
Be alert to electric shock.
LF622F
L1(+)
FG
L2(-)
GND
AO(+)
AO(-)
DO2
DI
DO1
COM
X
Y
G
E
A
B
Detector connection
terminal
Internal grounding terminal
Digital I/O common or
Modbus* terminal
*:Option
Power supply terminal
Current output terminal or
PROFIBUS* terminal
*:Option
Digital output terminal or
Modbus* terminal
*:Option
External grounding terminal
Digital input terminal or
Modbus* terminal
*:Option
Figure 3.2.1
Terminal Block Construction of LF620F and LF622F
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4. Installation
Safety Precautions for Installation
WARNING
„ Do not activate live circuits under environment of explosive atmospheres.
Live part of electric circuit or a high temperature department can cause explosion.
DON’T
„ Do not use parts of other products.
Protective performance degradation for hazardous location can cause explosion.
DON’T
„ Do not activate circuits While assembly of all components is not over.
Protective performance degradation for hazardous location can cause explosion.
DON’T
„ Install per the National Electrical Code for the US (NEC, ANSI/NFPA 70) and the
Canadian Electrical code for Canada (CEC, CAN/CSA-C22.1) and the drawing
3S8A2676,3S8A2677 (Refer to Appendix 2.).
Unsuitable conduit connections for hazardous location can cause explosion.
DO
CAUTION
„ Turn off mains power before working
on pipes
Working on pipes while
power is applied can cause
electric shock.
„ Use an appropriate device to carry and install
the LF620F and LF622F.
If his product falls to the ground,
injury, or
malfunction of or damage to the
DO
product, can be caused.
„ Do not modify or disassemble the
LF620F and LF622F unnecessarily.
„ Ground the LF620F and LF622F
independently from power equipment.
ohm or less ground resistance)
DO
DON’T
Modifying or
disassembling this product
can cause electric shock,
malfunction or damage to
this product.
DO
„ Do not work on piping and wiring
with wet hands.
Wet hands may result in
electric shock
(100
Operating this product without
grounding can cause electric shock
or malfunction.
The label shown left is placed near
the terminal board for power supply
to this equipment.
Be alert to electric shock.
DON’T
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4.1 Notes on Selecting the Installation Location
This product is designed for the following environment.
・Indoor and outdoor installation
・Ambient temperature:- 4 to 140°F (-20 to +60℃)
・Altitude:Up to 2000m
・Humidity range:10 to 90%(no condensation)
・Regulation of power voltage:±10%
・Pollution degree 2
・Structure:IP67 and NEMA 4X
Do not store or install the flowmeter in :
1.
2.
Places within the immediate proximity of equipment producing electrical interference (such as
motors, transformers, radio transmitters, electrolytic cells, or other equipment causing
electromagnetic or electrostatic interference).
Where there is direct sunlight.
3.
4.
5.
6.
7.
Where excessive vibration or mechanical shock occurs.
Where high temperature or high humidity conditions obtain.
Where corrosive atmospheres exist.
That can be submerged under water.
Where there is a sloped floor. To put the flowmeter temporarily on the floor, place it carefully
with something, such as a block, to support it so that the flowmeter will not topple over.
8. Places of too great an elevation or constricted areas where clearance for installation or
maintenance work is not provided.
9. The standard length of the cable that connects the detector and converter is 30m. Select the
converter installation location so that the distance of the detector and converter will not exceed
30m.
LF622F
10. Places where there is following factors.
◆Factors to impede infrared switch to operate properly
・Intense light such as direct sunlight and reflected sunlight by window glass or metal plate
・Place where brightness changes suddenly such as lighting being turned ON/OFF
・Dense smoke or steam near the control panel
・Those attached on the control panel such as rain (dew drop), snow, ice, mud and oil, and haze due to
their attachment
・Light reflecting object near the control panel, or reflecting object such as metal plate placed opposing
to the control panel
When any of above factors is considered, take a measure for the proper operation of infrared switch such
as to place a cover or to secure a space for at least a person to stand in front of the control panel.
When unable to avoid above factors, operate the EMF converter removing the factor by covering the
control panel by hand so that light does not shine on it, by cleaning those attached on the control panel,
or by standing in-between the reflecting object and the control panel to block the light.
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6 F 8 A 0 9 2 8
4.2 How to Install
4.2.1 LF620F Type
The LF620F type converter is used as one united body. The LF620F type is not installed by itself.
LF620F
For how to install the LF620F type converter and a detector, check the type of the combined detector
and follow the instruction manual for the relevant detector.
4.2.2 LF622F Type
The LF622F type can be installed on a wall or to a pipe stand. Install the converter so that the front of
the cover is positioned on the vertical plane. Be sure to install it so that the conduit opening of the
converter will face towards the bottom.
LF622F
Figure 4.1 shows examples of installation to a panel and wall. Figure 4.2 shows an example of installation
to a pipe stand.
- 18 -
6 F 8 A 0 9 2 8
Unit : inch (mm)
Panel or wall mounting dimensions
Figure 4.1
Examples of Installation to Panel and Wall
- 19 -
6 F 8 A 0 9 2 8
Unit : inch (mm)
M10U bolt
50A pipe (2B pipe) etc.
Figure 4.2
Example of Pipestand Mounting
- 20 -
6 F 8 A 0 9 2 8
5. Wiring
Notes on wiring
WARNING
„ DO NOT DISCONNECT WHILE CIRCUIT IS LIVE UNLESS LOCATION IS KNOWN TO
BE NONHAZARDOUS.
Live part of electric circuit or a high temperature department can cause explosion.
DON’T
„ Do not activate circuits while assembly of all components is not over.
Protective performance degradation for hazardous location can cause explosion.
DON’T
„ Install per the National Electrical Code for the US (NEC, ANSI/NFPA 70) and the Canadian
Electrical code for Canada (CEC, CAN/CSA-C22.1) and the drawing 3S8A2676,3S8A2677
(Refer to Appendix 2.).
Unsuitable conduit connections for hazardous location can cause explosion.
DO
- 21 -
6 F 8 A 0 9 2 8
CAUTION
„ Install a switch and fuse to isolate the
LF620F and LF622F from mains power.
Power supply from mains
power can cause electric shock
or circuit break-down.
„ Turn off mains power before conducting
wiring work.
Wiring while power is applied
can cause electric shock.
„ Do not work on piping and wiring with
wet hands.
„ Ground the LF620F and LF622F
independently from power equipment.
(100 ohm or less ground resistance)
Operating this product without
grounding can cause electric
DO
shock or malfunction.
DO
Wet hands may result in
electric shock
DON’T
„ Do not conduct wiring work with bare
hands.
DON’T
Remaining electric charge
even if power is turned off can
still cause electric shock.
DO
„ For the power supply wiring and grounding
wiring, use crimping terminals with
insulated sleeve.
There is a risk of electric shock
due to drop-off or loosing, and a
risk of fire and equipment
DO
trouble due to heat generation.
„ Do not modify or disassemble the
LF620F and LF622F unnecessarily.
DON’T
Modifying or
disassembling this product can
cause electric shock,
malfunction of or damage to
this product.
The label shown left is
placed near the power
supply terminal on the
converter.
Be alert to electric shock.
Flowmeter accuracy may be affected by the way wiring is executed. Proceed with correct wiring taking
the precautions in following pages.
- 22 -
6 F 8 A 0 9 2 8
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. This in turn causes malfunction of flowmeter or noise problems. Avoid a rainy
day if the flowmeter is to be installed outdoors. Even indoors, prevent water from splashing over
the flowmeter. Try to finish the wiring as quickly as possible
(3) The converter has a surge arrestor/protector installed inside. Therefore, do not conduct a
withstand voltage test for the converter. To check the insulation of the converter, use a voltage
of 250Vdc or less.
(4) After wiring, be sure to install the terminal block protection cover.
(5) Because the excitation cable and flow rate signal cable transmit very delicate signals, pass each of
them separately through a thick steel conduit tube, keep them away from the large current wiring as
far as possible, and do not install them in parallel.
LF622F
5.1 Cables
Use the kind of cables shown in Table 5.1 to wire the converter.
Name
Table 5.1 Installation Cables
Nominal
Cable name
cross-sectional
area
Finished
outer
diameter
Description
11~13mm
CVV JIS C
3401,IEC60695,IEC607
54,IEC60227,IEC60245
or equivalent
Power cable
3-core vinyl sheathed cable or 2-core vinyl
sheathed cable
Output signal
cable
Use a shielded cable of finished outer diameter 9 to 14mm and nominal CVV-S JIS -258-C or
cross-sectional area 1.25mm2.
equivalent
Flow rate
signal cable
2-core shielded chloroprene cabtyre cable
2 mm²
0.75 mm2
11~13mm
2PNCT-S
JIS C 3327 or
equivalent
2 mm2
1.25 m2
11~13mm
2PNCT
JIS C 3327 or
equivalent
LF622F
Excitation
cable
3-core chloroprene cabtypre cable
LF622F
- 23 -
6 F 8 A 0 9 2 8
5.2 External Device Connections and Grounding
5.2.1 LF620F Type
The terminal board connections of an integral type converter LF620F are shown in Figure 5.1. Proceed
with wiring as described in Section 5.4, “Wiring Procedure.”
LF620F
Instrument panel : Ordered separately
Grounding with 100Ω or less
ground resistance
Ⅳ wire 5.5mm2
or more
Power switch
(External double-pole power switch)
Grounding with 100Ω or less
ground resistance
Power supply
Current output (4~20mAdc)
or PROFIBUS
Digital input (20~30Vdc)
or Modbus
NOTE:
• When 3-core power cable is used, do not
ground from the external grounding
terminal. Perform grounding at the
receiving side only.
• Only when a 2-core power cable is used,
perform grounding from the external
grounding terminal.
Digital output 2
Signal common for DI and DO
Digital output 1
Grounding with 100Ω or less
ground resistance
I/O cable
(CVV-S)
Power cable
(CVV)
NOTE:
In the case of the integral type, the signal line
( A, B, G ) and the excitation line ( E, X, Y )
are the connector joints.
NOTE:
To avoid 2-point grounding, ground the
shield of the output cable basically at the
receiving side.
Figure 5.1
External Wiring Schematic Diagram
* Use a heavy copper braid or wire (cross-sectional area 5.5 mm2 minimum) to ground the terminal
and make it as short as possible as shown in Figure 5.1 for grounding.
Also, Avoid a common ground where earth current may flow. (An independent ground is
preferable.)
* The converter has no power switch. Install the power switch at the system side. Be sure to use a
double-pole/single-throw (both disconnection) wiring breaker.
- 24 -
6 F 8 A 0 9 2 8
5.2.2 LF622F Type
The terminal board connections of separate type converter LF622F are shown in Figure 5.1. Proceed with
wiring as described in Section 5.4, “Wiring Procedure.”
LF622F
Instrument panel : Ordered separately
Grounding with 100Ω or less
ground resistance
NOTE
Power switch
(External double-pole power switch)
Grounding with 100Ω or
less ground resistance
Power supply
Thick conduit tube
Signal cable
(2-core shielded
cabtypre cable)
Current output (4~20mAdc)
or PROFIBUS
Digital input (20~30Vdc)
or Modbus
Ⅳ wire 5.5mm2
or more
Excitation cable
(3-core cabtypre
cable)
Digital output 2
Signal common for DI and DO
Digital output 1
Grounding with 100Ω or less
ground resistance
I/O cable
(CVV-S)
Power cable
(CVV)
NOTE:
To avoid 2-point grounding, ground
the shield of the output cable basically
at the receiving side.
Figure 5.2
Detector
NOTE:
• When 3-core power cable is used, do not ground from
the external grounding terminal. Perform grounding at
the receiving side only.
• Only when a 2-core power cable is used, perform
grounding from the external grounding terminal.
External Wiring Schematic Diagram
- 25 -
6 F 8 A 0 9 2 8
5.3 Notes on Wiring
5.3.1 Notes on Instrumentation-Converter Wiring
• To avoid 2-point grounding, ground the shield of output cable basically at the receiving side.
• Use a grounding wire of IV wire 5.5mm2 or more. The size of the external grounding terminal screws is M4.
Do not share a grounding wire with other instruments where grounding current may flow. (An
independent grounding is preferable.)
• Power cable
When a 3-core cable is used: Ground with the FG terminal.
When a 2-core cable is used: Use an external grounding terminal and make the cable as short as possible.
Note that, for a replacement from the Toshiba electromagnetic flowmeter converter LF220 type, the cable
grounding position differs.
5.3.2 Notes on Wiring of the LF622F Type
• The detector is shipped with a flow rate signal cable and excitation cable. Be sure to use those cables coming
with the detector.
LF622F
Note: When the cable length exceeds 30m, cables may not be supplied. Check whether the cable is
supplied with the specs.
• The allowable cable length between the detector and converter varies depending on the conductivity of the
operating fluid. Refer to the instruction manual of the combined detector.
• When connecting with the detector, wire the cables in the order of the excitation cable and flow rate signal
cable.
• Because the input cables transmit very delicate signals, pass the excitation cable and input signal cable
separately through a steel conduit tube, keep them away from the large current wiring as far as
possible, and do not install them in parallel.
• 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 gascket and cable connection gascket from Toshiba
or a Toshiba distributor and be sure to replace the gascket.
- 26 -
6 F 8 A 0 9 2 8
5.4 Wiring
IMPORTANT
The cable connections are not provided in the conduit port of this apparatus.
Please prepare yourself for the cable connections which could be used in Division2 hazardous locations.
CAUTION
„ Do not wire cables and replace parts when
power is supplied.
DON’T
„ Do not work on piping and wiring with wet hands.
Wiring work and replacing
parts in the power-on state
may cause electric shock.
Wet hands may result in electric
shock.
DON’T
5.4.1 Grounding
(1) Grounding the LF620F type
LF620F
Ground as shown in Figure 5.3. Make the grounding wire as short as possible. Use grounding wire
material of IV wire 5.5mm2 or more. Do not share grounding wire with other instruments where
grounding current may flow. (An independent grounding is preferable.)
Conductive material pipe
Example: Metal, etc.
Grounding terminal
Piping of non-conductive material
Example: Resin or metal piping whose
inside is resin-lined, etc.
Grounding wire
• If the piping material is conductive, connect
the grounding wires to the both ends of the
piping flange.
Figure 5.3
grounding resistance
• If the piping material is non-conductive, perform 100Ω ormore
grounding resistance 100Ω or less.
Grounding the LF620F Type
- 27 -
6 F 8 A 0 9 2 8
(2) Grounding the LF622F type
LF622F 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 5.5mm2 or more. Do not share a grounding wire with other instruments
where grounding current may flow. (An independent grounding is preferable.)
If it is difficult to perform grounding work at the detector side because of a pit installation or other reasons,
use a 3-core cable for the excitation cable and connect the E terminal of the detector to the E terminal of
the converter. (The E terminal of the converter is internally connected with the FG terminal and the
converter case.)
Converter
terminal
block
A
B
G
E
X
Y
Converter
terminal
block
FG
A
B
G
E
X
Y
FG
Shield twisted
Shield twisted
Grounding terminal
Grounding terminal
(100 ohm or less
ground resistance)
(100 ohm or less
ground resistance)
Input signal
cable
Input signal
cable
Excitation cable
Excitation cable
Shield twisted
Shield twisted
Grounding terminal
Detector
NOTE: Please refer to instruction terminal
manual of detector about block
connection to detector.
Detector
NOTE: Please refer to instruction terminal
manual of detector about block
connection to detector.
(100 ohm or less
ground resistance)
Figure 5.4 (a)
Wiring between Detector and Converter (For
grounding the detector, see Figure 5.5 below.)
Conductive material piping
Example: Metal, etc.
Figure 5.4 (b)
Wiring between Detector and Converter (when
grounidng of the detector is difficut)
Non-conductive material piping
Example: Resin product or metal piping whose inside is resin lined
Grounding wire
Grounding terminal
Grounding
wire
Grounding wire
(100 ohm or less
ground resistance)
• If the piping material is conductive, connect the
grounding wires to the both ends of the piping flange.
Figure 5.5
Grounding terminal
• If the piping material is non-conductive, perform grounding
resistance 100Ω or less.
Grounding the Separate Type Detector
- 28 -
6 F 8 A 0 9 2 8
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.
(1) Power cable, current output cable, and digital I/O cables
The necessary cables should be ordered from the person responsible for the installation. Strip the sheath of
each conductor as shown in Figure 5.6 and attach a crimping terminal with insulated sleeve to it. The size
of the crimping terminal is M3.5.
• Connect the power cable to terminal blocks L1 and L2.
• Connect the current output cable to terminal blocks + and -.
• Connect the digital I/O cable to terminal blocks D1, D01, D02 and COM, as required.
Crimping terminal M3.5
25~45mm
Figure 5.6
Terminal Treatment of Power Cable, Current Output Cable and Digital I/O cable
(2) Excitation cable
LF622F
Strip the sheath from the end of each conductor as shown in Figure 5.7, attach an M3.5 crimping terminal
with insulated sleeve, and connect it to the terminal blocks X and Y. Connect the red conductor to terminal
block E.
M3.5 crimping terminal
X Black
E Red
Y White
25~45mm
Figure 5.7
Terminal Treatment of Excitation Cable
- 29 -
6 F 8 A 0 9 2 8
(3) Connecting the input signal cable:
LF622F 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. Then attach an M3.5 crimping terminal with insulated sleeve as shown in
Figure 5.8. Connect a crimping terminal to the A and B terminals on the terminal block and connect to
each G terminal of the detector and converter.
M3.5 crimping terminal
Thermal contraction tube or vinyl tube
A Black
G Shield
B White
25~45mm
Figure 5.8
●
Terminal Treatment of Flow Rate Signal Cable
Notes on signal cable shield processing work
When stripping an external sheath, intermediate and insulated sheath, be careful not to scratch or cut the
internal conductors and shield mesh. Do not disjoint the shield mesh but treat it as shown in Figure 5.9.
a. Open the shield mesh with a pair of tweezers or the like.
Coated wire
b. Pull out the internal coated wires from the hole of the
shielded mesh.
Shield mesh
c. Pull out all internal coated wires and extend the shield mesh
wire.
Figure 5.9
Treating the Signal Cable Shield Mesh
- 30 -
6 F 8 A 0 9 2 8
5.4.3 Cable Connection
(1) Connect and install the terminal-treated cables to the terminal block by the following procedure.
*Connect the cables to the terminal block securely. A loose connection may cause incorrect
measurement. After connecting a cable, try to pull it to check whether it has been connected
securely.
Referring to Section 5.2 "External Device Connections and Grounding", connect each cable to the
terminal block. Tighten the screws of the terminal block tightly to ensure the secure connection. A
loose connection may cause incorrect measurement. After connecting a cable, try to pull it to see
whether it has been connected securely.
Phillips screwdriver
* The appropriate torque for tightening
the terminal board screw is 1.2 N•m.
Terminal block
Figure 5.10
Connecting a Cable to Terminal Block
- 31 -
6 F 8 A 0 9 2 8
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. Terminal (COM) is the signal common for the other three terminals (DO1, DO2 and DI).
Functions can be assigned for each terminal with the LCD control keys. See Chapter 10, “Digital I/O
Functions.”
To connect an electromagnetic relay or counter to the contact output terminal (DO1 or DO2), put a
surge-absorbing diode into the input circuit of the relay or counter. See Figure 5.3 for an example of
electromagnetic counter connection.
Note2
Solidstate relay
Transistor open collector
Note2
Photo-coupler
Note2
Resistor
Converter
COM
DI
DO2
Power supply
24 V dc
DO1
Note1
Surge-absorbing diode
-
+
Electromagnetic counter
Note3
(Power supply-built-in electronic counter)
Figure 5.3
Electromagnetic Counter Connection Example
Note 1:
Use a surge-absorbing diode of the rating: current rating 1A and voltage rating 200 V
minimum.
Note 2:
In the case of standard specification (digital input DI, no output DO2), the semiconductor contact
point, photo coupler and resistor are not built in. Leave DI and DO2 disconnected.
Note 3: When a power supply-built-in electronic counter is used, the serge-absorbing diode is not
required.
- 32 -
6 F 8 A 0 9 2 8
6. Operation
CAUTION
„ Do not touch the terminal board when power
is supplied.
Touching the terminal board
when power is supplied can
cause electric shock.
„ Do not touch the main body when high
temperature fluid is being measured.
The fluid raises the main body
temperature and can cause burns.
DON’T
DON’T
6.1 Preparatory check
Follow the procedure described below to prepare before starting the flow measurement (described with
regard to the entire flowmeter).
System Check
Check the items listed below
„ Check the wiring between the converter and related instruments.
„ Make sure all the bolts of connection flanges on which the flowmeter is mounted
securely tightened.
„ Make sure the direction of flow arrow is in accordance with actual flow.
„ Make sure the flowmeter is grounded with 100 ohm or less ground resistance.
„ Make sure the converter housing covers are securely tightened.
Placing System On-Stream
„ Let the fluid go through the detector pipe. (Note 1)
„ When the detector is filled with the fluid, stop the fluid and keep it still in the detector pipe.
Supplying Electric Power
„ Make sure the power supply is as specified.
Checking Converter Parameters
„ Check the configuration parameter settings. Refer to Chapter 7, “LCD Display and
Controls,” Chapter 8, “Configuration Parameter Setting,” and Chapter 11,
“Communications Function.”
Zero Adjustment
„ Wait for 30 minutes to warm up the flowmeter. Then making sure the fluid holds still in the
detector pipe before starting the zero adjustment.
„ Refer to 6.2, “Zero Adjustment.”
On-line measurement
„ After checking the items and conducting the zero adjustment as listed above, let the fluid go
through the detector pipe. Output (4–20 mA dc) directly proportional to the flow rate can be
obtained.
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6 F 8 A 0 9 2 8
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.
6.2 Zero Adjustment
To conduct zero adjustment of the flowmeter, the fluid in the detector pipe must be held still.
There are three different ways to start the zero adjustment:
(1) Pressing a combination of control keys for the model with LCD display
See 8.2.14 “Still Water Zero Adjustment”
(2) Sending a command signal from a HART communications device (a communication
device such as hand-held terminal AF900 is required)
See the instruction manual of hand-held terminal you use.
(3) PROFIBUS communication (a communication device for PROFIBUS is required)
See the instruction manual of communication device you use.
(4) Modbus communication (a communication device for Modbus is required)
See the instruction manual of communication device you use.
- 34 -
6 F 8 A 0 9 2 8
7. LCD Display and Controls
7.1
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
LF622F
LF620F
LCD Display
Control key
(Control panel)
Control key
(Control panel)
Fig. 7.1 Display section of LF620F
Fig. 7.1 Display section of LF622F
Instructions
The operation principle of infrared switch is to irradiate infrared to the front of control panel and detect
the reflection from finger when operating.
Normal operation is impeded depending on the conditions such as disturbing light from surroundings or
stain attached to the control panel. When unable to avoid such condition, operate the EMF converter in the
following manner.
Remove the factor to impede proper operation of infrared switch as below:
・Cover the control panel by hand so that light does not shine on it
・Clean the stain attached on the control panel
・Clean the stain on the finger or the gloves to operate the EMF converter, or wear gloves in light color
・When there is a reflecting object placed opposing to the control panel, stand in-between the reflecting
object and the control panel to block the light
Following are considered as the factors to impede infrared switch to operate properly.
・Intense light such as direct sunlight and reflected sunlight by window glass or metal plate
・Place where brightness changes always such as ON/OFF of lighting
・Dense smoke or steam near the control panel
・Those attached on the control panel such as rain (dew drop), snow, ice, mud and oil, and haze due to
their attachment
・Operation of the control panel by hands wearing gloves in dark color or stained fingers and gloves
・Light reflecting object near the control panel, or reflecting object such as metal plate placed opposing
to the control panel
- 35 -
6 F 8 A 0 9 2 8
●
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. (Number of LCD display dots: 128 x 128 dots)
①
②
① Measured Value Display 1
Displays a measured value of the type the operator has
selected.
② Measured Vale Display 2
Displays a measured value or setting value of the
type the operator has selected or displays an error message. If
an error message appears, the measured value or setting value
cannot be displayed (error message-precedence display).
- 36 -
6 F 8 A 0 9 2 8
●
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. For example, if the control keys are installed so that they are located above the display, they
can be displayed appropriately as shown below, by changing the display method.
ESC
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
Left of the control keys
- 37 -
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
ESC
Above the control keys
ESC
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
Right of the control keys
6 F 8 A 0 9 2 8
7.2 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.")
・Flow rate / Flow velocity display
Numeric value・・・7 digits maximum including a decimal point are
displayed. (Up to 9999999)
4 significant digits (for the set span)
Unit・・・
7 digits maximum are displayed.
Flow direction・・・In the case of reverse direction, “-”is displayed.
In the case of forward direction, not displayed.
- 1 0 . 0 0
m / s
・Totalized flow count display
Numeric value・・・8 digits maximum
(Up to 99999999)
1 2 3 4 5 6 7 8
F R D
is blinked
Operation・・・ Counting in progress:
Counting stopped: ■ is displayed
Counting direction・・・
In the case of forward flow direction, "FRD" is displayed.
In the case of reverse flow direction, "REV" is displayed.
・Totalized flow volume display
1 2 3 4 . 5 6 7
F R D
Numeric value・・・8 digits maximum including a decimal point are
displayed. (Up to 99999999)
Displayed to the least significant digit of the set
count rate.
Unit・・・
3 digits maximum are displayed.
3
m
is blinked
Operation・・・ Counting in progress:
Counting stopped: ■ is displayed
Counting direction・・・
In the case of forward flow direction, "FRD" is displayed.
In the case of reverse flow direction, "REV" is displayed.
・Totalized difference flow volume display
1 2 3 4 . 5 6 7
+
m
3
Numeric value・・・8 digits maximum including a decimal point are
displayed. (Up to 99999999)
Displayed to the least significant digit of the set
count rate.
Unit・・・
3 digits maximum are displayed.
Operation・・・
is blinked
Counting in progress:
Counting stopped: ■ is displayed
Sign・・・
In the case the difference flow is in the forward direction, “+” is
displayed
In the case the difference flow is in the reverse direction, “−” is
displayed
- 38 -
6 F 8 A 0 9 2 8
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 m3:
When the measurement object flows through 0.0001(m3), inside counter counts 1.
Because inside counter is 8 digits at the maximum, the maximum of totalized flow
is 9999.999(m3). When inside counter exceeds the maximum, inside counter return
to 0, and continue totalization.
Totalized flow display(m3)
Inside counter(m3)
Max 8 digits
Max 8 digits (include decimal point)
0
000.0000 m3
1
000.0001 m3
1000
000.1000 m3
1000000
100.0000 m3
10000000
1000.000 m3
99999999
9999.999 m3
(Example2)
When the count rate is 10 m3:
When the measurement object flows through 10(m3), inside counter counts 1.
Because inside counter is 8 digits at the maximum, the maximum of totalized flow
is 99999999(m3). When inside counter exceeds the maximum, inside counter return
to 0, and continue totalization.
Inside counter(m3)
Totalized flow display(m3)
Max 8 digits
Max 8 digits (include decimal point)
0
00000000 m3
1
00000010 m3
1000
00010000 m3
1000000
10000000 m3
10000000
99999999 m3
99999999
99999999 m3
Note 2: Totalized difference flow volume shows the difference between the forward direction volume
and the reverse direction volume.
When the forward direction volume reaches the upper limit and returns to zero, the volume is
displayed as follows:
Forward direction volume: 1000
Reverse direction volume: -100
Difference flow volume:
900
99999999
-100
99999899
- 39 -
0
-100
-100
6 F 8 A 0 9 2 8
・Percent display
Numeric value・・・Within the range of +125.0% to −125%,
displayed to the decimal place of 0.1%.
- 1 2 5 . 0
%
Unit・・・
"%" fixed.
* If the value goes out of the display range, an error message appears.
・Flow rate (When custom unit is selected)
- 1 0 . 0 0
* X X X / Y Y Y
Numeric value・・・
7 digits maximum including a decimal point
are displayed. (Up to 9999999)
4 significant digits: The value is obtained by
3
multiplying m /min by the set coefficient
Unit・・・
7 digits maximum are displayed.
(The character string that was set for the
custom unit.)
Flow direction・・・
In the case the flow is in reverse direction ,
“-” is displayed.
In the case the flow is in forward direction,
not displayed.
Identification charanter・・・ “*” is character to show the custom unit.
・Range display
1 0 . 0 0 0
R 1
Numeric value・・・
m / s
Unit・・・
Range・・・
The span of the range being used
7 digits maximum are displayed.
When custom unit is selected, identification
character “*” is displayed.
The range being used is displayed as follows:
R1: Range 1
R2: Range 2
R3: Range 3
R4: Range 4
In the range display, the range currently used is displayed (any one of the ranges 1 to 4). The screen
example above shows that Range 1 is currently used.
When multi-range is selected, the displayed range changes automatically as the range used is changed.
- 40 -
6 F 8 A 0 9 2 8
・Bar graph display
Bar graph can be set only for Display 2.
0
100
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).
Scale marks are displayed in increments of 25% inside
the graph.
Range・・・
The range number currently used is displayed.
R 1
* About Range type, percent display and percent value when bar graph is displayed
When percent display is used, the % value displayed depends on the flow direction. However,
the % value when bar graph is displayed is as shown in the table below.
Range type
Input signal
Single(forward)
Forward
50%
Reverse
50%
Forward
50%
Reverse
50%
Single(forward)
Bidirectional
(forward/reverse)
Bidirectional
(forward/reverse)
direction
direction
direction
direction
% value in
percent display
50%
-50%
50%
-50%
% value in
bar graph
50%
0%
50%
0%
4−20mA output
12mA
4mA
(Output low lim value*)
12mA
12mA
* The set value in 8.2.17 “Output Low Limit Setting” will be output.
• When communications function is used
When HART communication is used, a mark is displayed in the upper field on the display.
When PROFIBUS/Modbus communication is used, if the communication is made between the
PROFIBUS or Modbus option board and the converter main board, a mark is displayed in the upper
field on the display in the same way as in HART communication, while communication between the
PROFIBUS or Modbus option board and the external bus, nothing is displayed.
Displayed when communications
function is used
- 1 0 . 0 0
m / s
- 41 -
6 F 8 A 0 9 2 8
7.3 Basic operations
7.3.1 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 SET
switch. To return to the
measurement mode, push the ESC switch from each menu.
● Measurement mode:
Mode to perform flow measurement.
Flow rate or volume of process fluid is displayed and outputted.
The flowmeter first goes to this mode when power is turned on.
● Setting mode:
Mode to check or set various parameters.
Various setting values can be displayed on the screen but the output is
always the flow rate of process fluid as in the measurement mode.
(See 7.4 “Setting and Calibration Items List” and 8.2 “Parameter
Check / Change” for details.)
● Calibration mode:
Mode to check the converter circuit.
The built-in simulation signal generator circuit can be used to check the
span of the range and check the excitation current value. The current
output varies in accordance with the simulation signal. Each digital
output retains its previous state when the converter is changed to the
calibration mode.
See 7.4, “Setting and Calibration Items List” and 9, “Calibration” for
details.
- 42 -
6 F 8 A 0 9 2 8
○Flow of mode change
Note: When the screen is switched, let your
finger off the switch. If you keep pushing, the
mode returns to the measurement mode.
Measurement mode
1.000
Hold down only the center switch
for 3 seconds or longer. (Note)
m/s
OK
* (L) indicates that you can hold down the switch longer.
* <L> indicates that you must hold down the switch
longer.
12345678
Unlock procedure error(3 times)
FRD
ESC
OK
FRD
▲ ▲
PUSH SW
CNT:
CNT CTRL
SET:
SET MODE
CLR<L>
12345678
PUSH SW
ESC
CNT CTRL
CNT CTRL
DISPLAY
UNLOCK
■
▲
ESC
FRD
CLR OK?
NO
OK
Cancel
<L>
CLR
V****
Unlock
procedure
error
12345678
NO
Counter control mode
CNT
ESC
CNT
SET
Confirmation message
only for CLR
V****: Version display
SET
MENU SEL
BASIC
DETAILED
PREVIEW
ZERO ADJ ZERO ADJ
PLS SET
(L)
▼
ESC
ESC
To Next page
Numeric value setting screen
EXC CUR
0.2000
ESC: Cancel
Data will not be saved.
A
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
(L) (L)
▼
▲
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
(L)
▼
ESC
ESC
▲
▼
B:DISPLAY
1 DSPL1
2 DSPL2
3 CS VAL
4 CS UNIT
5 EXIT
(L) (L)
▼
▲
ESC
▼
A
(L)
▲
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
EXIT OK?
OK
Setting mode
ESC
1
0.9
0.9
%
%
NO
<L>
NO
ESC
To Measurement mode
NOW ZERO
ADJUSTING
PLS OUT
PLS FRD
- 43 -
NO
Cursor at
lowest
digit
CS UNIT
XXX/YYY
AAA/BBB
NO
(L)
▲
NO
After adjustment /
calibration
SET OK?
ESC
OK
(L)
▲
Special screen
(L)
▼
ADJ OK?
OK
DO1 FUNC
CS UNIT
OK
NO
NO
Adjustment / Calibration screen
Hold down the switch longer
ADJ READY
SET OK?
ESC
OK
(L)
DO1 FUNC
(L)
▼
OK/
ZERO ADJ
A
NO
Item selection screen
ESC
NO
▼/▲
0.2010
0.2000
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
OK
EXC CUR
EXC CUR
▼
R:CAL
1 CAL 0%
2 CAL 50%
3 CAL 100%
4 EXC DSPL
5 EXIT
(L) (L)
▼
▲
ESC
ESC
Move digit
SET OK?
ESC
OK
NO
6 F 8 A 0 9 2 8
○ 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.
MENU SEL
BASIC
DETAILED
PREVIEW
ZERO ADJ
PLS SET
(L)
ESC
▼
0.00000
PLS OUT
PLS SET
m
(L)
▼
PLS WID
CNT RATE
DO1 FUNC
(L)
▲
(L)
▲
PLS MODE
=MANUAL
3
000.0
MANUAL ms
(L)
▲
(L)
(L)
PLS MODE
=AUTO
* (L) indicates that you can hold
down the switch longer.
CNT CTRL
To Measurement mode
ESC
12345678
FRD
■
ESC
CLR
(1) Digital Output 1 selection screen
The function for Digital Output 1 can be selected.
This screen shows functions related to pulse outputs only.
(For details of setting procedure, see 8.1.18.)
• PLS OUT (Pulse output)
• PLS FRD (Forward direction pulse output)
• PLS REV (Reverse direction pulse output)
(2) Count rate setting screen
Count rate can be set.
(For details of setting procedure, see 8.1.20.)
(3) Pulse width setting screen
When pulse width setting mode is MANUAL, the screen moves to Pulse width setting screen.
When pulse width setting mode is AUTO, the screen moves to Totalizer control screen.
(For details of setting procedure, set See 8.1.20.)
Note: Pulse width setting mode is set to AUTO when shipped from the factory.
(4) Counter control screen
This screen is used to start the totalizer.
If
ESC is pushed, the screen returns to the measurement screen. (End of pulse output
setting mode)
(For details of operation procedure, see Section 10.2.)
Note: If ESC is pushed to return to the measurement screen while automatic screen
sequence in progress, the setting items entered so far are saved.
- 44 -
6 F 8 A 0 9 2 8
○ 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.
When you push the switch for 3 seconds or more, the display unlock screen appears.
Switch operation
Display example
DISPLAY
UNLOCK
Description
Display unlock screen
PUSH SW
V****
DISPLAY
UNLOCK
To unlock the display, push the switches in
the order indicated on the screen.
PUSH SW
The pushed switch is highlighted.
V****
PUSH SW
CNT:
CNT CTRL
SET:
SET MODE
Note 1:
Note 2:
Pushing
at the end, the display will
be unlocked and the mode change screen
appears.
CNT
ESC
SET
If the order of switches to push was erroneous, UNLOCK FAILURE error message
appears and the screen return to the display unlock screen.
Mode return to the measurement mode in case of the third error.
When the center switch is pushed during error message indication, mode return to the
measurement mode immediately.
V**** shows the version number.
When the mode change screen appears, proceed as follows:
NOTE:
CNT
Enters the setting mode (setting configuration selection menu).
Changes to the counter control screen and you can operate the totalizer.
Note: If password has been set, the password input screen appears when you move from the
mode change screen to the setting configuration selection menu (when you push SET
switch), or when you move to the totalizer control screen (when you push CNT
switch).
If the password you enter does not match, you cannot change some of the parameters. In
addition, when you operate the totalizer, you cannot use CLEAR switch.
(However, you can start or stop the totalizer.)
- 45 -
6 F 8 A 0 9 2 8
○ Operation timeout function
If no operation is made for one minute or more while the converter is in the setting mode, the
mode automatically returns to the measurement mode unless the parameters are displayed on
the screen.
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
Menu screen
When no operation is made
for 1 minute, the mode
automatically returns to the
measurement mode.
ESC
EXC CUR
0.2000
Parameter check screen
A
ESC
The screen does not return
to the measurement mode.
EXC CUR
0.2000
Parameter change screen
(Parameters
are
being
changed.)
A
7.3.2 Setting and Calibration
In the setting mode, you can select items, or check or change the setting values as described below.
When you push
or
to scroll up or down the numeric value or alphabet, or when push
to move the digit, you can execute continuous operation by holding down the relevant
switch longer. (Holding down the switch longer automatically executes the operation continuously.)
● Moving to the menu screen
Switch operation
Display example
PUSH SW
CNT:
CNT CTRL
SET:
SET MODE
ESC
SET
Description
Mode change screen
SET
CNT
MENU SEL
BASIC
DETAILED
PREVIEW
ZERO ADJ
PLS SET
ESC
- 46 -
Pushing SET in the measurement mode
takes you to the menu configuration
selection screen.
For configuration, select BASIC or
DETAILED menu.
6 F 8 A 0 9 2 8
Switch operation
Display example
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
B:DISPLAY
1 DSPL1
2 DSPL2
3 CS VAL
4 CS UNIT
5 EXIT
B:DISPLAY
1 DSPL1
2 DSPL2
3 CS VAL
4 CS UNIT
5 EXIT
Description
Pushing
from the menu configuration
selection screen takes you to the menu
screen.
The cursor is positioned at the function
display ([A: DETECTOR] in this example).
* This screen is an example when the
DETAILED menu is selected.
Pushing
or
while the cursor
is positioned at the function display changes
to another function display and its
corresponding menu item list.
When you push
, the cursor at the
function display disappears and the cursor
goes to the display field of the setting items
list.
ESC
B:DISPLAY
1 DSPL1
2 DSPL2
3 CS VAL
4 CS UNIT
5 EXIT
Every time you push
, the cursor
rolls down by one item at a time. Pushing
further when the cursor is
positioned at the bottom causes the cursor to
return to the top item.
ESC
DSPL2
When you push
, the setting screen
for the item the cursor positioned appears
and enables you to set / check the parameter.
m/s
ESC
● Checking or changing the setting value
Switch operation
Display example
C:RANGE
1 R TYPE
2 R1 3 R2
4 R3 5 R4
6 R HYS
7 EXIT
ESC
- 47 -
Description
Menu screen for function C
Push
R1.
to move the arrow mark to
6 F 8 A 0 9 2 8
Switch operation
R1
Display example
Description
Push
to select the item you want
to check or change.
The screen changes and the currently set
item appears for you to check.
Pushing ESC returns you to the menu
screen.
10.0000
m/s
ESC
R1
When you push
, the cursor appears
on the setting value and the screen is ready
to change the setting value.
10.0000
m/s
R1
Ready to change the setting value
10.0000
Pushing
increments the number in
the place where the cursor is positioned.
(Holding down the switch longer causes the
operation to continue.)
m/s
* Pushing
when the cursor is positioned
below the digit of unit will change the unit to the
next unit. In addition, if a natural number is used, a
decimal point as well as the numeric value appears.
R1
Ready to change the setting value
10.0000
Pushing
next digit.
m/s
R1
moves the cursor to the
Ready to change the setting value
05.0000
Change the setting value using
.
In this example, 5.000 m/s is set.
m/s
R1
and
Pushing
sets the data temporarily.
The cursor disappears and a message
appears to confirm whether it is OK or not.
05.0000
m/s
SET OK?
ESC
N O
O K
R1
10.0000
N O
m/s
- 48 -
If you want to cancel the operation, for
example, because the temporarily set data is
incorrect, pushing
N O returns the
temporarily set data to the previous value,
enabling you to change the setting value
again.
Pushing ESC cancels the setting operation
and exits the setting screen.
6 F 8 A 0 9 2 8
Switch operation
R1
Display example
5.00000
m/s
Description
Pushing
when data is temporarily
set causes the data to be fixed and executed.
After the data is set, the cursor disappears,
enabling you to check the set value.
ESC
ESC
C:RANGE
1 R TYPE
2 R1 3 R2
4 R3 5 R4
6 R HYS
7 EXIT
Pushing
screen.
ESC
returns you to the menu
ESC
C:RANGE
1 R TYPE
2 R1 3 R2
4 R3 5 R4
6 R HYS
7 EXIT
EXIT OK?
O K
N O
5.000
m/s
O K
12.345
m3
- 49 -
Push
and move the cursor to “EXIT”
and then push
, a message appears to
confirm whether it is OK to exit or not.
When you push N O
here, the screen
does not move to the measurement mode
and returns to the menu screen.
When you push
here, the screen
does move to the menu configuration
selection screen.
If you push O K , the setting mode ends
and returns to the measurement mode.
6 F 8 A 0 9 2 8
7.4 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."
○ Basic configuration (when menu configuration is BASIC)
When you select "BASIC" in the menu configuration screen, the menu to check or change each
constant is executed as follows.
Fucntion
B
DISPLAY
1
2
Display1
Display2
C
RANGE
Range
type
Range1
D
FILTER
Damping
value
E
LOW CUT
Low cut
Value
Still water
zero point
adjustment
Returns to
meas.
mode
Returns to
meas.
mode
Returns to
meas.
mode
H
DO
Digital
output 1
Digital
output 2
I
DI
Digital
input
F
ZERO
J
CNT/PLS
Count rate
Returns to
meas.
mode
Pulse
width
setting
mode
3
Returns
to meas.
mode
Returns
to meas.
mode
4
Returns
to meas.
mode
Pulse
width
Returns to
meas.
mode
When the mode is changed from the measurement mode to the setting mode, Group B is displayed first
in the case of Basic configuration. After that, the screen changes as follows:
Group B (Start screen) ⇔ Group C ⇔ Group D ⇔ Group E
⇔ Group F ⇔ Group H ⇔ Group I ⇔ Group J
- 50 -
6 F 8 A 0 9 2 8
○ 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
A
DETECTOR
1
2
3
Exciting
frequency
*1
4
5
Returns
meas.
mode
Returns
meas.
mode
Exciting
Current *1
Meter size
*1
Display1
Display2
Custom
Value *1
Custom
Unit *1
C
RANGE
Range type
*1
Range1 *1
Range2 *1
Range3 *1
D
FILTER
Damping
value
Limit time
Returns
meas.
mode
to
Limit rate
E
LOW CUT
Low cut
value
Display low
cut setting
K FACTOR
*4
Returns
meas.
mode
to
DO1 alarm
Status *1
DO2 alarm
Status *1
B
DUSPLAY
F
ZERO
G
4-20mA
Still
water
zero
point
adjustment
Current
output setting
upon alarm
occurrence
*1
Digital
output1
*1
Manual zero
setting
Low limit
Value *1
Flow
direction *1
6
to
Range
Hysteresis *1
Range4 *1
Returns to
meas.
mode
Returns to
meas.
mode
High alarm
ON/OFF
*1
HH alarm
ON/OFF
*1
Digital
output2
*1
DI
control
signal level
*1
Pulse width
setting
mode
*1
Preset
output
function
*1
High alarm
Value
*1
HH alarm
Value
*1
Empty alarm
*1
Self check
ON/OFF *1
Converter
Alarm *1
O
FIX OUT
Fix out set
*1
Fix current
Value *1
Fix pulse
Value *1
P
OTHERS
Password
*1
LCD
adjustment
Switch
position
Detector
Type *3
Returns
meas.
mode
to
Q
COMM
PROFIBUS
*1
MODBUS
*1
R
CAL
0%
Flow value
calculation
*1
50%
Flow value
calculation
*2
Returns to
meas.
mode
100%
Flow value
calculation
*1
Exciting
current
display
*2
Returns
meas.
mode
to
H
DO
I
DI
Digital input
*1
J
CNT/PLS
Count rate
*1
K
PRESET C
L
H/L ALM1
M
H/L ALM2
N
SELF CHK
Preset count
value
*1
Returns
meas.
mode
to
Returns
meas.
mode
Returns
meas.
mode
to
Returns to
meas.
mode
Pulse width
*1
Returns
meas.
mode
to
Returns to
meas.
mode
Low alarm
ON/OFF
*1
LL alarm
ON/OFF
*1
Low alarm
value
*1
LL alarm
value
*1
Returns
to
meas.
mode
Returns
to
meas.
mode
to
Note 1: If you enter a wrong password, you are allowed to check the setting value and to
perform calibration for the items with *1 mark in the table. However you are not
allowed to change the setting and perform calibration for these items.
Note 2: The items with *2, you are only allowed to check the calibration value.
Note 3: The item with *3, this item can be used more than software version V0103.
Note 4: The item with *4, When the Detector Type is K-FAC CAL, this item is displayed.
- 51 -
7
to
Returns
meas.
mode
to
6 F 8 A 0 9 2 8
7.5 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.
* Password is a 3-digit number. If '000' is set for the password, the password input screen does not appear.
If a password is set (other than '000' is set), you have to enter your correct password.
• Limitation of totalizer operation
Start and stop operations only are permitted. (Clear operation is not permitted.)
- 52 -
6 F 8 A 0 9 2 8
• Limitation of settings and adjustments
The items enclosed by thick lines below can only be changed or adjusted (others can only be
displayed).
However, for items protected by password, they can be changed only when the password input
matches.
Function
1
2
A
DETECTOR
Exciting
Current
Meter size
B
DUSPLAY
Display1
C
RANGE
3
4
Exciting
frequency
Flow
direction
Display2
Custom
Value
Custom
Unit
Range type
Range1
Range2
Range3
D
FILTER
Damping
value
Limit rate
Limit time
Returns
meas.
mode
E
LOW CUT
Low cut
value
Display low
cut setting
F
ZERO
G
4-20mA
Still
water
zero
point
adjustment
Current
output
setting upon
alarm
occurrence
Manual zero
setting
6
7
to
to
Range
Hysteresis
Range4
Returns
meas.
mode
to
Returns to
meas.
mode
Returns to
meas.
mode
Low limit
Value
Returns to
meas.
mode
H
DO
Digital
output1
Digital
output2
DO1 alarm
Status
I
DI
Digital input
DI
control
signal level
Returns to
meas.
mode
J
CNT/PLS
Count rate
Pulse width
setting
mode
Preset
output
function
5
Returns
meas.
mode
Returns
meas.
mode
Pulse width
DO2 alarm
Status
Returns
meas.
mode
Returns
meas.
mode
to
Returns
meas.
mode
Returns
meas.
mode
to
to
Returns to
meas.
mode
K
PRESET C
Preset count
value
L
H/L ALM1
High alarm
ON/OFF
High alarm
Value
Low alarm
ON/OFF
Low alarm
Value
M
H/L ALM2
HH alarm
ON/OFF
HH alarm
Value
LL alarm
ON/OFF
LL alarm
Value
N
SELF CHK
Empty alarm
Self check
ON/OFF
Converter
Alarm
O
FIX OUT
Fix out set
Fix current
Value
Fix pulse
Value
P
OTHERS
LCD
adjustment
Switch
position
Detector
type *1
Returns
meas.
mode
to
Password
Q
COMM
PROFIBUS
MODBUS
R
CAL
0%
Flow value
calculation
50%
Flow value
calculation
Returns to
meas.
mode
100%
Flow value
calculation
Exciting
current
display
Returns
meas.
mode
to
Returns
meas.
mode
Returns
meas.
mode
to
to
to
Note1: For items other than the ones enclosed by thick lines and if they are sealed specifications, they
cannot be accepted by HART communication to change their settings. In addition, mode change
to the pulse width / pulse width setting mode or calibration mode can be made only through
switches on the converter main unit. (Operations by HART communication cannot be accepted.)
Note2: The item with *1, this item can be used more than software version V0103.
- 53 -
to
6 F 8 A 0 9 2 8
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.
No.
8.2.2
8.2.3
8.2.4
8.2.5
8.2.6
8.2.7
8.2.8
Function item
Exciting current
Meter size
Exciting frequency
Flow direction
Display1,2
Custom value
Custom unit
8.2.9
Range (Span)
8.2.10
8.2.11
8.2.12
8.2.13
Damping value
Limit rate, Limit time
Low cut value
8.2.15
8.2.16
8.2.17
Display low cut
Still water zero point
Adjustment
Manual zero
Output at alarm occurrence
Output low limit
8.2.18
Digital output
8.2.19
Digital input
Count rate,
Pulse width setting mode,
Pulse width
Preset count value
Preset output mode
8.2.14
8.2.20
8.2.21
8.2.22
8.2.23
High / Low alarm limit,
HH (High high)
LL (Low low) alarm limit
8.2.24
8.2.25
8.2.26
Empty alarm
Self check
Converter alarm
8.2.27
Fix output
8.2.28
8.2.29
8.2.30
8.2.31
8.2.32
Password
LCD adjustment
Swtich position
Communication
Detector type
- 54 -
Display example
EXC CUR
SIZE
EXC FREQ
FLOW DIR
DSPL1 / DSPL2
CS VAL
CS UNIT
R TYPE,
R1(~R4),
R HYS
DAMPING
LIM RATE / LIM TIME
CUT VAL
DSPL SET
ZERO ADJ
MANUAL
ALM 4-20
LOW LIM
DO1 FUNC, DO2 FUNC,
DO1 STAT, DO2 STAT
DI FUNC, DET LVL
CNT RATE, PLS MODE,
PLS WID
PRST VAL
OUT MODE
H SET / H VAL
L SET / L VAL
HH SET / HH VAL
LL SET / LL VAL
EMPTY
SELF CHK
CONV ALM
FIX SET, CUR VAL,
PLS VAL
PASSWORD
LCD ADJ
SW POSN
PROFIBUS / MODBUS
DET TYPE
6 F 8 A 0 9 2 8
8.2 Check/Change of Parameters
8.2.1 Menu Configuration Selection Screen
Display example
MENU SEL
BASIC
DETAILED
PREVIEW
ZERO ADJ
PLS SET
ESC
You can select the kind of menu configuration.
For menu items of configuration, see 7.4 "Setting and Calibration Items List."
BASIC
DETAILED
PREVIEW
ZERO ADJ
PLS SET
Only the basic parameters are displayed.
Nothing is displayed in the field of other parameters.
All parameters are displayed.
Only reading of all parameters is possible.
When
switch is pushed, the screen switches.
When ESC switch is pushed, the mode returns to the
measurement mode.
Moves directly to the still water zero point adjustment
screen.
See 8.2.14 “Still Water Zero Point Adjustment.”
Moves to the pulse output setting mode.
See “Pulse output setting mode” on Page 44.
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6 F 8 A 0 9 2 8
8.2.2 Exciting Current Value
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.
Specifying any other value may cause an error.
Shown below is an example of changing the exciting current value from 0.1900A to 0.2150A.
Switch operation
Display example
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
Description
Select "EX CUR" from the setting item
selection menu.
ESC
STEP1
EXC CUR
0.1900
A
ESC
STEP2
EXC CUR
0.1900
A
STEP3
EXC CUR
0.1900
A
STEP4
EXC CUR
0.2900
A
STEP5
EXC CUR
0.2150
A
- 56 -
The currently set excitation current value
(0.1900A in this example) appears.
Then push
.
* Pushing ESC returns you to the setting
menu.
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
(The digit indicated by the cursor is
highlighted.)
Then push
.
You can continue to change the setting
value. Push
to move the cursor to
the digit you want to change. (You can hold
down the switch longer for continuous
operation.)
Then push
.
You can continue to change the setting
value. Pushing
increments the
number of the digit the cursor is positioned.
(You can hold down the switch longer for
continuous operation.)
Repeat this operation to change the value to
0.2150A.
When the desired value is obtained, push
to set the value temporarily.
6 F 8 A 0 9 2 8
Switch operation
STEP6
Display example
EXC CUR
0.2150
A
SET OK?
ESC
STEP7(=END)
O K
Description
Pushing
shows a message to confirm
the setting is OK or not.
If OK, push O K . If you need to redo the
setting, push N O .
Pushing ESC cancels the setting operation
and exits the setting screen.
N O
EXC CUR
0.2150
When you push O K to “SET OK?”
message, the set value is fixed.
Then pushing ESC brings you back to the
setting menu. If you push
, you can
A
change the current value from 0.2150A
again.
ESC
Note: The setting range of excitation current value is from 0.0000A to 0.2500A.
If you try to set an exciting current value larger than 0.2500A, an error message appears
and the setting value returns to the previous value.
O K
8.2.3 Meter Size
Proceed as follows to check or change the meter size of the detector.
Switch operation
STEP1
Display example
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
SIZE
ESC
50
mm
ESC
STEP2
SIZE
50
mm
STEP3
Description
Select "SIZE" from the setting item
selection menu.
SIZE
65
mm
- 57 -
The currently set meter size (50mm in this
example) appears.
Then push
.
Pushing ESC returns you to the setting
menu.
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
.
You can continue to change the setting
value.
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
6 F 8 A 0 9 2 8
Switch operation
STEP4
Display example
Description
Repeat this operation until 150mm is
obtained.
SIZE
150
When the desired value is obtained, push
to set the value temporarily.
mm
STEP5(=END)
SIZE
Pushing
shows a message to confirm
whether the setting is OK or not.
If OK, push O K . If you need to redo the
setting, push N O .
150
SET OK?
ESC
mm
O K
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
Note 1:The meter size display loops as shown below:
①
2.5mm
4mm
6mm
②
0.1inch
0.16inch
0.25inch
15mm
0.5inch
900mm
36inch
②
①
Note 2: When the meter size is changed, range unit and count rate will be forcefully changed as
described below. If necessary, change these parameters again.
Range unit
Count rate
m/s
If the count rate goes out of the setting range
when the meter size is changed, the count rate
will be forcefully set to zero.
Note 3: The exciting frequency setting may become inappropriate for the set value when the
meter size of the detector is changed. If the exciting frequency is the value shown
below when the meter size is changed, the exciting frequency will be forcefully
changed.
Setting meter size
(mm)
(inch)
2.5 ~ 200
0.1 ~ 8
250 ~ 450
10 ~ 18
500 ~ 900
20 ~ 36
Set exciting frequency
-
24Hz
12Hz, 24Hz
- 58 -
Forcefully set exciting
frequency
Not forcefully set
12Hz
6Hz
6 F 8 A 0 9 2 8
8.2.4 Exciting Frequency
You can select an exciting frequency of 6Hz, 12Hz or 24Hz.
Since each exciting frequency value has its own characteristics, you should select an appropriate exciting
frequency (24Hz is set at shipment. Depending on the characteristics of the detector, a large frequency
may result in excitation failure. When a large frequency value is set and it changes the indicator value,
decrease the frequency to a value that will not change the indicator value.)
Exciting frequency
6Hz
12Hz
24Hz
Zero-point stability
Good
Response
Good
Withstand fluid noise
Good
However, the range of usable exciting frequency depending on the detector to be combined is shown
below.
Detector
combined
Corresponding exciting frequency
Meter size
6Hz
12Hz
24Hz
LF414,LF434,LF65
4
GF630,GF632
0.6’’ to 8’’
○
○
◎
LF434,LF654
10’’ to 18’’
○
◎
−
LF494
1’’ to 4’’
○
○
◎
GF630, GF632
10’’ to 18’’
○
◎
−
GF630, GF632
20’’ to 36’
◎
−
−
LF664
20’’ to 80’
◎
−
−
◎Factory setting
○Combination allowed
− Combination not allowed
Shown below is an example of changing the exciting frequency from 24Hz to 12Hz.
Switch operation
Display example
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
Description
Select "EXC FREQ" from the setting item
selection menu.
ESC
STEP1
EXC FREQ
24
Hz
ESC
STEP2
EXC FREQ
24
Hz
The currently set excitation frequency
(24Hz in this example) appears.
Then push
* Pushing ESC returns you to the setting
menu.
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
- 59 -
.
.
6 F 8 A 0 9 2 8
Switch operation
STEP3
Display example
Description
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
12
Hz
EXC FREQ
STEP4
Repeat this operation to select 12Hz.
When the desired item is selected, push
to set the item temporarily.
12
Hz
STEP5(=END)
EXC FREQ
Pushing
shows a message to confirm
whether the setting is OK or not.
If OK, push O K . If you need to redo the
setting, push N O .
12
SET OK?
ESC
Hz
Pushing ESC cancels the setting operation
and exits the setting screen.
N O
O K
(Note 1) The exciting frequency is displayed cyclically, as shown below.
6Hz
12Hz
24Hz
8.2.5 Flow Direction Setting
In the converter, you can set the flow direction of fluid arbitrarily.
●
Flow direction setting
Selection item
NORMAL
SWITCH
Switch operation
Contents
When the fluid flows in the direction of the arrow
indicating the flow direction that is attached to the
detector, the indicator value and electric current
output value increase.
When the fluid flows in the reverse direction of the
arrow indicating the flow direction that is attached to
the detector, the indicator value and electric current
output value increases.
Display example
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
ESC
- 60 -
Description
Select "FLOW DIR" from the setting item
selection menu.
6 F 8 A 0 9 2 8
Switch operation
STEP1
Display example
FLOW DIR
NORMAL
Description
The currently set flow direction (NORMAL
in this example) appears.
Then push
* Pushing ESC returns you to the setting
menu.
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
ESC
STEP2
FLOW DIR
NORMAL
STEP3
Then push
.
You can continue to change the setting item.
Pushing
changes the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
FLOW DIR
SWITCH
STEP4
.
FLOW DIR
Perform this operation to change the setting
to SWITCH.
SWITCH
When the desired item is obtained, push
to set the item temporarily.
STEP5(=END)
FLOW DIR
Pushing
shows a message to confirm
whether the setting is OK or not.
If OK, push O K . If you need to redo the
setting, push N O .
SWITCH
SET OK?
ESC
O K
N O
Pushing ESC cancel the setting operation
and exits the setting screen.
8.2.6 Display Setting
You can select one of the engineering units listed below as a flow measurement unit.
Flow velocity unit
Flow rate unit
(Note3)
Volume unit
Other units
Totalized flow direction
Totalized difference flow
Totalized cyclic display
m/s, ft/s
m3/s, m3/min, m3/h, m3/d , L/s, L/min, L/h, L/d,
mL/s, mL/min, mL/h, mL/d, gal/s, gal/min, gal/h, gal/d,
bbl/s, bbl/min, bbl/h, bbl/d, pt/s, pt/min, pt/h, pt/d,
qt/s, qt/min, qt/h, qt/d
ft3/s, ft3/min, ft3/h, ft3/d, Mgl/s, Mgl/min, Mgl/h, Mgl/d
m3 , L , mL , gal , bbl , pt , qt , ft3 , Mgl
% , COUNT , RANGE , GRAPH , CUSTOM
Forward direction (when F or B is selected)
Reverse direction (when R or B is selected)
Difference between totalized forward flow and totalized
reverse flow. (when totalized flow direction D is
selected)
Totalizer of forward, reverse and difference are
displayed at cycle about 5 seconds. (when totalized flow
direction C is selected.)
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6 F 8 A 0 9 2 8
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.
In addition, the range number being used for measurement is also displayed.
CUSTOM: displays the result obtained by multiplying m3/min by the custom coefficient.
The details see 10.10 “Custom unit function”.
Note 2: GRAPH display can be selected only for Display 2 screen.
Note 3: Mgl=1,000,000 gal.
Note 4: Please do the unit setting of the HART communication by the HART communication.
For display settings, Display 1 (DSPL1) and Display 2 (DSPL2) can be set independently.
The following is an example to change the Display 1 setting from % to mL/s.
Switch operation
Description
Display example
B:DISPLAY
Select "DSPL1" from the setting item
1 DSPL1
selection menu.
2
3
4
5
DSPL2
CS VAL
CS UNIT
EXIT
ESC
DSPL1
STEP1
The currently set display setting (% in this
example) appears.
Then push
.
* Pushing ESC returns you to the setting
menu.
%
ESC
DSPL1
STEP2
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
%
DSPL1
STEP3
Push
to move the cursor from the
second unit to the third unit and change the
display unit by pushing
.
Repeat this operation to change the display
unit to mL/s.
When the desired display unit is selected,
push
to set the display unit
temporarily.
Pushing
shows a message to confirm
whether the setting is OK or not.
If OK, push O K . If you need to redo
the setting, push N O .
Pushing ESC
cancels the setting
operation and exits the setting screen.
mL/s
STEP4(=END)
DSPL1
mL/s
SET OK?
ESC
O K
N O
Note 1: The first unit (volumetric units etc.) changes as shown below:
%
m3
L
mL
bbl
- 62 -
gal
m/s
ft/s
6 F 8 A 0 9 2 8
GRAPH
Mgl
ft3
CUSTOM
qt
pt
RANGE
Note 2: The second unit (time unit) changes as shown below:
/s
/min
/h
COUNT
/d
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.
Using the display digit setting screen, you can change the decimal places used for the
measured value in the measurement mode.
Switch operation
Display example
DIGIT1
1.0
m/s
Description
Either one of the flow velocity or flow rate
(custom unit is included) is selected, the
screen automatically moves to the display
digit setting screen.
This screen shows the set measured value
and unit.
STEP1
DIGIT1
Pushing
or
changes the
setting of display digit and the measured
value indication changes accordingly.
1.00
m/s
STEP2
When the desired item is selected, push
to set the item temporarily.
DIGIT1
Pushing
shows a message to confirm
whether the setting is OK or not.
If OK, push O K . If you need to redo the
setting, push N O .
1.00
m/s
Pushing ESC cancels the setting operation
and exits the setting screen.
SET OK?
ESC
O K
N O
Note: If the setting is cancelled without completing the display digit setting, the previously
used display digit setting will be used.
For display digit setting screen, the measured value is displayed in the screen based on the display
setting in the previous screen (display setting screen) and thus select the display digit setting while
observing the displayed measured value.
You can change the display digit with 1/10, 1/100, 1/1000 three phases for the setting range's maximum
effective digits. When setting range is more than 1000, a lower digit is not displayed from the decimal
point.
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6 F 8 A 0 9 2 8
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=10.0000
m/s
One hundredth of
maximum effective digits
Maximum effective digits
Likewise, when the setting range 1m/s and display digit setting is 1/100, the measured value will be
displayed to the second decimal place.
The numbers less than the displayed digits will be rounded.
Note: The maximum display digits for flow velocity, flow rate and custom value are 7 digits.
If the measured value exceeds 7 digits, the displayed value remains fixed at the maximum display
value.
● Changing the totalized flow volume direction
You can change the totalized flow volume direction as described below.
The following is an example to change the Display 1 setting from Fixed forward totalized flow (F)
to Bidirectional flow (B).
Switch operation
Display example
DSPL1
m3
F
Description
Select "DSPL1" from the setting item
selection menu.
The currently set display setting (m3 F in
this example) appears.
Then push
.
ESC
STEP1
DSPL1
m3
F
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
STEP2
DSPL1
m3
B
Push
to move the cursor to the
third unit (totalized flow direction) and then
push
to change the direction.
Then push
temporarily.
STEP3(=END)
DSPL1
m3
B
SET OK?
ESC
O K
N O
- 64 -
to set the display unit
Pushing
shows a message to confirm
whether the setting is OK or not.
If OK, push O K . If you need to redo the
setting, push N O .
Pushing ESC cancel the setting operation
and exits the setting screen.
6 F 8 A 0 9 2 8
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.
For Display 2 setting, select DSPL2 from the setting menu.
8.2.7 Custom Coefficient Setting
You can set the custom coefficient used when CUSTOM is selected for display setting or span setting.
Custom coefficient can be set except 0.
Displayed value when CUSTOM is set = Measured value in m3/min unit × Custom coefficient
Span value when CUSTOM is set
= Span value in m3/min unit × Custom coefficient
Note: Custom coefficient is applied when CUSTOM is selected in the display setting or span setting.
Other values such as instantaneous flow rate (display unit, such as m/s and m3/min), displayed
values such as totalized flow and pulse out will not be applied. The details see 10.10 “Custom
unit function”.
The following is an example to change the custom coefficient from 1.00 to 2.25.
Switch operation
Description
Display example
B:DISPLAY
Select "CS VAL" from the setting item
1 DSPL1
selection menu.
2
3
4
5
DSPL2
CS VAL
CS UNIT
EXIT
ESC
STEP1
CS VAL
1.00000
The currently set custom coefficient
(1.00000 in this example) appears.
Then push
* Pushing ESC returns you to the setting
menu.
ESC
STEP2
.
CS VAL
1.00000
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
STEP3
CS VAL
2.25000
Push
to move the cursor to the
desired digit and push
to change the
number of the digit.
Repeat this operation to change the value to
2.25.
When the value is changed to the desired
value, push
to set the custom
coefficient temporarily.
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6 F 8 A 0 9 2 8
Switch operation
STEP4(=END)
Display example
CS VAL
2.25000
SET OK?
ESC
O K
N O
Description
Pushing
shows a message to confirm
whether the setting is OK or not.
If OK, push O K . If you need to redo the
setting, push N O .
Pushing ESC cancels the setting operation
and exits the setting screen.
Note: The custom coefficient setting precision is 5 digits. Therefore, the input value changes
as follows depending on the setting value:
(Example) Input value, "85713038" → After the setting is confirmed, "85713040"
8.2.8 Custom Unit Setting
You can set the custom unit used when CUSTOM is selected for display setting.
For custom unit setting, you can set any combination of characters within 7 characters.
The following is an example to change the custom unit from AAA/BBB to XXX/ZZZ.
Switch operation
Description
Display example
B:DISPLAY
Select "CS UNIT" from the setting item
1 DSPL1
selection menu.
2
3
4
5
DSPL2
CS VAL
CS UNIT
EXIT
ESC
STEP1
CS UNIT
AAA/BBB
ESC
STEP2
CS UNIT
AAA/BBB
The currently set custom unit (AAA/BBB in
this example) appears.
Then push
.
* Pushing ESC
menu.
returns you to the setting
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
STEP3
CS UNIT
XAA/BBB
- 66 -
Push
or
to change the
character.
When the desired character is obtained,
push
. The cursor moves to the next
character.
6 F 8 A 0 9 2 8
Switch operation
STEP4(=END)
Description
Pushing
when the cursor is positioned
on the 7th character shows a message to
confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
Pushing ESC cancels the setting operation
and exits the setting screen.
Display example
CS UNIT
XXX/ZZZ
SET OK?
O K
ESC
Note :
N O
The selectable characters are displayed cyclically as shown below:
!
Symbol 1
”
#
$
%
&
(
’
)
*
+
,
-
.
/
↓
Numeric
characters
0~9
↓
:
Symbol 1
;
<
=
>
?
・
↓
Alphabetical
characters
(uppercase)
A~Z
↓
Alphabetical
characters
(lowercase)
a~z
↓
Special
character
“
”(Space)
8.2.9 Span (Range)
You can set the following constants in this setting item:
(1) Range type
(2) Unit of span (can be changed in Range 1)
(3) Span
(4) Hysteresis
● Range type
Multiple ranges can be used by selecting the range type. You can select a single range,
multiple ranges, or forward/reverse multiple ranges.
Select one from five types shown below:
Selection items (display)
SINGLE
4F-0R
2F-2R
EXT 2F-0R
EXT 2F-2R
Description
Single range
Unidirectional flow,
automatic selection of multiple ranges
Bidirectional flows,
automatic selection of multiple ranges
Unidirectional flow,
multiple ranges selected by external signal
Bidirectional flows,
multiple ranges selected by external signal
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6 F 8 A 0 9 2 8
● 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)
LOW OVER SPEC (if the set value is less than 0.1 m/s)
Try again to set the span within the range.
(2) Limitation of multiple ranges
When multiple ranges are used, the following must be observed:
In the case of unidirectional flow,
Range 1 > Range 2 > Range 3 > Range 4
In the case of bidirectional flows,
Range 1 > Range 2,
Range 3 > Range 4
If you try to set the ranges not conforming to the above, the following message
appears:
MULTI RANGE ERROR
Try again to set the ranges as specified above.
(3) Influence on count rate (pulse rate)
If you have changed the range when count rate (pulse rate) is set, the pulse output for 100%
output may exceed the maximum allowable range.
If this happens, the following message appears after all ranges are set and the screen goes to
the count rate (pulse rate) setting sequence.
HIGH OVER CNT RATE or LOW OVER CNT RATE
In this case, set the count rate (pulse rate) again in accordance with 8.2.20 “Count Rate,
Pulse Width Setting Mode and Pulse Width.”
● 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.
You can select the setting unit from the units below:
Flow velocity unit
m/s, ft/s
m3/s, m3/min, m3/h, m3/d, L/s, L/min, L/h, L/d
mL/s, mL/min, mL/h, mL/d, gal/s, gal/min, gal/h, gal/d
Flow rate unit
bbl/s, bbl/min, bbl/h, bbl/d, pt/s, pt/min, pt/h, pt/d
(Note)
qt/s, qt/min, qt/h, qt/d
ft3/s, ft3/min, ft3/h, ft3/d, Mgl/s, Mgl/min, Mgl/h, Mgl/d
Other
Custom unit
If you have changed the unit, the new span value will be displayed automatically based on the
newly set unit. When custom unit is selected, the new span value will be displayed
automatically based on the custom coefficient and custom unit of 8.2.7 “Custom Coefficient
Setting” and 8.2.8 “Custom Unit Setting”. The details see 10.10 “Custom unit function”.
Note : Mgl = 1,000,000 gal
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6 F 8 A 0 9 2 8
● 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.
● Setting sequence of span (range)
The following is the setting sequence for span (range).
Item selection for span (range) setting
R TYPE
:Range type setting
R1
:Range 1 span and unit setting
R2
: Range 2 span
R3
: Range 3 span
R4
: Range 4 span
R HYS
: Hysteresis setting
Note: If any type of multiple ranges is selected as range type, the setting screens of Range 1
to Hysteresis forcefully appears one after another. If the setting is cancelled halfway, all
of the settings including the ones already set will be cancelled.
You can check or change each constant as described below.
● Checking each constant
Switch operation
Display example
C:RANGE
1 R TYPE
2 R1 3 R2
4 R3 5 R4
6 R HYS
7 EXIT
Description
Select "R1" from the setting item selection
menu.
ESC
R1
5.00000
m/s
ESC
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The currently set span value of Range 1
appears.
6 F 8 A 0 9 2 8
Switch operation
ESC
Display example
C:RANGE
1 R TYPE
2 R1 3 R2
4 R3 5 R4
6 R HYS
7 EXIT
Pushing
menu.
Description
returns
you to the setting
ESC
ESC
● Changing the range type
The range type should be set before changing the span.
The following is an example to change the range type from Single range (SINGLE) to
Bidirectional automatic selection of multiple ranges (2F-2R).
Switch operation
Description
Display example
C:RANGE
Select "R TYPE" from the setting item
1 R TYPE
selection menu.
2
4
6
7
R1 3 R2
R3 5 R4
R HYS
EXIT
ESC
STEP1
R TYPE
The currently set range type (SINGLE in
this example) appears.
SINGLE
Then push
* Pushing
menu.
ESC
STEP2
R TYPE
returns you to the setting
Then push
.
You can continue to change the setting item.
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
R TYPE
2F-2R
STEP4
ESC
The switches at the bottom change.
(
are shown.)
At the same, the cursor appears.
(The item indicated by the cursor is
highlighted.)
4F-0R
STEP3
.
R TYPE
Perform this operation to change the setting
to 2F-2R.
2F-2R
When the item is changed to the desired
item, push
to set the item
temporarily.
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6 F 8 A 0 9 2 8
Switch operation
STEP5(=END)
Display example
R TYPE
2F-2R
SET OK?
ESC
N O
O K
Description
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
Pushing ESC cancels the setting operation
and exits the setting screen.
● Changing the span
You can set the span value for each range.
The following is an example to change the span of Range 1 from 2.0 m/s to 100 L/min.
Switch operation
Description
Display example
R1
Select "R1" from the setting item selection
STEP1
menu.
2.00000
The currently set span value of Range1
(2.00000 m/s in this example) appears.
m/s
Then push
ESC
STEP2
R1
2.00000
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
m/s
STEP3
.
R1
2.00000
Push
to move the cursor to the digit
of the first unit.
m/s
STEP4
R1
3.93000
Push
to change the first unit.
Push
to move the cursor to the
digit of the time unit.
L/s
STEP5
R2
236.000
L/min
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Push
to change the time unit.
Push
to move the cursor to the digit
of span value.
6 F 8 A 0 9 2 8
Switch operation
STEP6
R2
Description
to change the number of the
Display example
Push
digit.
Push
136.000
to move the digit.
L/min
STEP7(=END)
R2
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
100.000
L/min
SET OK?
O K
ESC
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
Note: Unites of the measuring unit changes as shown below:
First unit
Second unit
(Time unit)
m3
Mgl
L
ft3
/s
mL
bbl
gal
CUSTOM
qt
pt
/min
/h
m
ft
/d
・However, the following first and second unit combinations cannot be selected:
m/min, m/h, m/d, ft/min, ft/h, ft/d
・In the case of custom unit, time unit is not displayed.
・In the case of custom unit, character string set in 8.2.8 “Custom Unit Setting” is displayed.
Identification character “*” showing the custom unit is displayed at the head of custom unit.
● Changing the hysteresis
The hysteresis used for multi-range switching is set to 3% (with respect to Range 1) when the
flowmeter is shipped from the factory, unless otherwise specified.
The following is an example to change the hysteresis from 3% to 5%.
Switch operation
Description
Display example
R
HYS
Select "R HYS" from the setting item
STEP1
selection menu.
03.0
%
Then push
ESC
STEP2
The currently set hysteresis (3.0% in this
example) appears.
R HYS
03.0
%
- 72 -
.
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
6 F 8 A 0 9 2 8
Switch operation
STEP3
Display example
R HYS
05.0
Description
Push
to move the cursor to the
desired digit and push
to change the
number of the digit.
%
STEP4(=END)
R HYS
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
05.0
SET OK?
ESC
%
O K
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
Note: If you try to set a value exceeding 25.0%, HIGH OVER SPEC error appears and the
value returns to the previous value. Set a value once again.
8.2.10 Damping Constant
The damping constant is used to moderate output fluctuations. (The larger the damping constant, the more
the output is averaged. But the response to an input change will be slower.) The damping constant can be
set as follows:
The damping constant is set for 0.0 sec, 0.5 sec and 1 to 60 sec (in increments of 1 second)
Note: 0.0 sec setting will work as equal to 0.1 sec damping constant.
Set 1 sec or more for normal operation.
If you set a value exceeding 60s, it is forcibly changed to 60s before data is written.
Proceed as follows to check or change the damping constant.
Shown below is an example of changing the damping constant from 2.0s to 10s.
Switch operation
Description
Display example
D:FILTER
1 DAMPING
2 LIM RATE
3 LIM TIME
4 EXIT
Select "DAMPING" from the setting item
selection menu.
ESC
STEP1
DAMPING
02.0
S
ESC
- 73 -
The currently set damping constant (2.0s in
this example) appears.
Then push
.
6 F 8 A 0 9 2 8
Switch operation
STEP2
Display example
DAMPING
02.0
At the same time, the cursor appears.
S
STEP3
Description
The switches at the bottom change.
(
are shown.)
DAMPING
Push
to move the cursor to the
desired digit and push
to change the
number of the digit.
10.0
S
STEP4(=END)
DAMPING
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
10.0
SET OK?
ESC
O K
S
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
8.2.11 Rate-Of-Change Limit and Control Limit Time
The rate-of-change limit is used to control sudden changes of the converter’s flow rate signal output
when excessive noise is contained in the flow rate signal.
The rate-of-change limit (set in percent value to the span of measuring range) and control limit time (set
in second) are used, and if the flow rate signal sampling value exceeds the rate-of-change limit value
based on the previous average value of the flow rate signal, the converter rejects the sampling value and
outputs the average value including the maximum value of the rate-of-change value.
In addition, if the limit-exceeding flow rate sampling value continues for the same flow direction for
more than the preset control limit time, the data will be considered as flow rate variation and that
sampling value will be used as normal output data.
You can set these two parameters within the ranges shown below:
• Rate-of-change limit
0 to 30% / 50ms (in increments of 0.1%)
• Control limit time:
0 to 20s (in increments of 1s)
Note:If “0” is set in either of these parameters, the rate-of-change limit function is disabled.
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6 F 8 A 0 9 2 8
● 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
D:FILTER
1 DAMPING
2 LIM RATE
3 LIM TIME
4 EXIT
Description
Select "LIM RATE" from the setting item
selection menu.
ESC
STEP1
LIM RATE
The currently set value (10.0% in this
example) appears.
10.0
Then push
%
.
ESC
STEP2
LIM RATE
The switches at the bottom change.
(
are shown.)
10.0
At the same time, the cursor appears.
%
STEP3
LIM RATE
Push
to move the cursor to the
desired digit and push
to change the
number of the digit.
15.0
%
STEP4(=END)
LIM RATE
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
15.0
SET OK?
ESC
O K
%
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
Note : If you try to set a value exceeding 30.0%, HIGH OVER SPEC error appears and the
value returns to the previous value. Set a value again.
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6 F 8 A 0 9 2 8
8.2.12 Low Cutoff
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%.
The low cutoff value can be set within the range 0 to 10% in increments of 0.1%.
You can check or change the low cutoff value as described below.
The following is an example to change the low cutoff value from 1.0% to 3.0%.
Switch operation
Description
Display example
E:LOW CUT
Select "CUT VAL" from the setting item
1 CUT VAL
selection menu.
2 DSPL SET
3 EXIT
ESC
STEP1
CUT VAL
The currently set low cutoff value (01.0%
in this example) appears.
01.0
Then push
%
.
ESC
STEP2
CUT VAL
The switches at the bottom change.
(
are shown.)
01.0
At the same time, the cursor appears.
%
STEP3
CUT VAL
Push
to move the cursor to the
desired digit and push
to change the
number of the digit.
03.0
%
STEP4(=END)
CUT VAL
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
03.0
SET OK?
ESC
O K
%
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
Note: If you try to set a value exceeding 10.0%, HIGH OVER SPEC error appears and the
value returns to the previous value. Set a value again.
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6 F 8 A 0 9 2 8
8.2.13 Display Low Cutoff
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.
● Display low cutoff setting function
Selection items
Displayed values
LINEAR
Low cutoff processing is not used for displayed
values.
LOW CUT
Displayed values are processed with low cutoff.
For example, if the low cutoff is set to 10% and the indicated value of the input from the detector is
5%, the displayed value on the screen becomes as shown below.
Display low cutoff
Displayed value
LINEAR
5.0%
LOW CUT
0.0%
You can check or change the display low cutoff as described below.
The following is an example to change the setting from LINEAR to LOW CUT.
Switch operation
Description
Display example
E:LOW CUT
Select "DSPL SET" from the setting item
1 CUT VAL
selection menu.
2 DSPL SET
3 EXIT
ESC
STEP1
DSPL SET
The currently set low cutoff
(LINEAR in this example) appears.
LINEAR
Then push
Pushing ESC
menu.
ESC
STEP2
DSPL SET
.
returns you to the setting
The switches at the bottom change.
(
are shown.)
LINEAR
STEP3
setting
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
Then push
.
You can continue to change the setting item.
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
DSPL SET
LOW CUT
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6 F 8 A 0 9 2 8
Switch operation
STEP4(=END)
Display example
DSPL SET
LOW CUT
SET OK?
ESC
N O
O K
Description
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
Pushing ESC cancels the setting operation
and exits the setting screen.
Note: The measured value sent from the converter through communications is the value
processed with display low cutoff.
8.2.14 Still Water Zero Adjustment
Zero adjustment is performed with the fluid held still in the detector's measurement pipe.
Switch operation
Description
Display example
F:ZERO
Select "ZERO ADJ" from the
1 ZERO ADJ
configuration item selection menu.
2 MANUAL
3 EXIT
ESC
ZERO ADJ
STEP1
The current flow rate measurement value
appears.
1.2
Then push and hold
%
* Pushing ESC
menu.
ESC
ADJ READY
STEP2
%
* Pushing N O returns you to the previous
screen.
N O
O K
STEP3
returns you to the setting
The title display changes to ADJ READY,
and the converter is ready for zero
adjustment.
1.2
Longer
longer.
NOW ZERO
ADJUSTING
Pushing O K
ZERO ADJ
Zero adjustment ends in several seconds and
the flow rate measured value appears.
starts zero adjustment.
O K
STEP4(=END)
0.0
%
Pushing
menu.
ESC
returns you to the setting
ESC
Note 1:
Note 2:
Note 3:
To start still water zero adjustment, push and hold
longer.
Still water zero adjustment is possible only when the flow rate value is within the range of
±1.25 m/s.
If you want to cancel the adjustment when ADJ READY is displayed, push N O . This
returns you to the state showing the flow rate measurement value on the screen.
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6 F 8 A 0 9 2 8
8.2.15 Manual Zero Adjustment
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” can be performed, this
manual setting is not needed.
● Changing the manual zero adjustment value
Calculate the adjustment value with the following equation:
Adjustment value (%) = {(Actual flow rate) − (Converter’s measured value)}
* Calculate the manual zero value using the % value for the setting range (Range 1) of the converter.
See the following example.
(Example)
Flow rate
% value to setting span
Actual flow rate obtained
3
10.0 m /min
50.0 %
from other instrument
Converter’s measured value
10.5 m3/min
52.5 %
Manual zero adjustment value
-2.5 %
(If manual zero adjustment value is set to +2.5 %, the converter output is shifted by −2.5%
and the output of 50.0 % will be obtained.)
The following is an example to change the manual zero adjustment value from +1.0% to −2.5%.
Switch operation
Description
Display example
F:ZERO
Select "MANUAL" from the setting item
1 ZERO ADJ
selection menu.
2 MANUAL
3 EXIT
ESC
STEP1
MANUAL
+001.0
%
The currently set manual zero value (+1.0%
in this example) appears.
Then push
.
ESC
STEP2
MANUAL
+001.0
%
- 79 -
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
6 F 8 A 0 9 2 8
Switch operation
STEP3
Display example
MANUAL
-002.5
Description
Push
to move the cursor to the
desired digit and push
to change the
symbol or number of the digit.
%
STEP4(=END)
MANUAL
Pushing
shows a message to confirm
whether the setting is OK or not.
If OK, push O K . If you need to redo the
setting, push N O .
-002.5
%
SET OK?
ESC
O K
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
Note: The manual zero adjustment value can be set within the range equivalent to ±1 m/s
(±10 % of the maximum range 10m/s). If you try to set a value out of this range, an
error message HIGH OVER SPEC or LOW OVER SPEC appears. If this happen,
redo the setting.
In addition, if you perform still water zero adjustment with water held still, the manual
zero adjustment value will be cleared to 0.0%.
8.2.16 4−20mA Alarm Output Setting
The 4−20mA alarm output setting is the function to fix the current output to a selected fixed value if
an alarm occurs when self-diagnosis function is performed.
The 4−20mA alarm output value can be selected from the following table.
● The 4−20mA alarm output setting function
Selection items
The 4−20mA alarm output value
UNDER 3mA
3.0mA or less
4mA
4.0mA
HOLD
Fixed to the present value
OVER 24mA
24.0mA or more
You can check or change the 4−20mA alarm output value as described below.
The following is an example to change the setting from UNDER 3.0mA to 4.0mA.
Switch operation
Description
Display example
G:4-20mA
Select "ALM 4-20" from the setting item
1 ALM 4-20
selection menu.
2 LOW LIM
3 EXIT
ESC
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6 F 8 A 0 9 2 8
Switch operation
STEP1
Display example
ALM 4-20
UNDER 3mA
Description
The currently set value (UNDER 3.0mA in
this example) appears.
Then push
* Pushing
menu.
ESC
ALM 4-20
STEP2
4mA
ALM 4-20
4mA
SET OK?
ESC
O K
returns you to the setting
Then push
.
You can continue to change the setting item.
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
ALM 4-20
STEP4(=END)
ESC
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
UNDER 3mA
STEP3
.
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
8.2.17 Output Low Limit Setting
The low limit of the current output for converter can be set.
The output low limit can be selected from the items listed in the table below.
● Output low limit setting function
Selection items
Output low limit
4.0mA
The current value can be outputted up to 4.0mA (0%).
3.2mA
The current value can be outputted up to 3.2mA (−5%).
2.4mA
The current value can be outputted up to 2.4mA (−10%).
Note: If the low cutoff value in 8.2.12 “Low Cutoff” is set to a value other than 0%, the output low
limit value will be fixed to 4.0mA, regardless of the set value.
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6 F 8 A 0 9 2 8
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" from the setting item
1 ALM 4-20
selection menu.
2 LOW LIM
3 EXIT
ESC
STEP1
LOW LIM
The currently set value (4.0mA in this
example) appears.
4.0mA
Then push
*Pushing
menu.
ESC
STEP2
LOW LIM
LOW LIM
2.4mA
SET OK?
ESC
O K
returns you to the setting
Then push
.
You can continue to change the setting item.
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
LOW LIM
2.4mA
STEP4(=END)
ESC
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
4.0mA
STEP3
.
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
8.2.18 Digital Output
Digital output functions can be selected.
You can select the digital output function from the tables shown below.
For details of digital output functions, see 10, “Functional Description.”
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6 F 8 A 0 9 2 8
●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
Range output No. 1
RNG SIG2
Range output No. 2
PRESET C
Preset count output
CONV ALM
Converter failure alarm output
PLS OUT
Pulse output
PLS FRD
Fixed forward flow pulse output
PLS REV
Fixed reverse flow pulse output
MRH ALM
Multi-range high alarm output
MRL ALM
Multi-range low alarm output
Notes: When the range type is set to Forward/reverse multiple ranges, and if the pulse output
(PLS OUT) is selected, pulses of forward and reverse directions will be output.
For setting method of the range type, see 8.2.9, “Span (Range).”
●Digital output active status (Only when alarm output is set )
Selection items
Alarm output action
NormCLOSE
Normal: Contact closed, Alarm out: Contact open
NormOPEN
Normal: Contact open, Alarm out: Contact closed
●Changing the digital output function
The following is an example to change the Digital Output 1 (DO1) function from High alarm
output (H ALM) to Low alarm output (L ALM).
Switch operation
Description
Display example
H:DO
Select "DO1 FUNC" from the setting item
1 DO1 FUNC
selection menu.
2
3
4
5
DO2 FUNC
DO1 STAT
DO2 STAT
EXIT
ESC
STEP1
DO1 FUNC
The current setting (H ALM in this example)
appears.
H ALM
ESC
- 83 -
Then push
.
* Pushing ESC
screen.
returns you to the menu
6 F 8 A 0 9 2 8
Switch operation
STEP2
Display example
DO1 FUNC
H ALM
Then push
.
You can continue to change the setting item.
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
DO1 FUNC
STEP3
L ALM
STEP4(=END)
DO1 FUNC
L ALM
SET OK?
ESC
O K
Description
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
8.2.19 Digital Input
Digital input functions can be selected.
You can select the digital input function from the table shown below.
For details of digital input functions, see 10, “Functional Description.”
●Digital input functions
Selection items
NO USE
CNT ST/SP
CNT RS/ST
RNG SW
ZERO ADJ
FIX OUT
Digital input functions
Not used
Totalizer Start / Stop
Totalizer Reset / Start
Remote selection switch of multiple ranges
Still water zero adjustment start
Fixed output mode control
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6 F 8 A 0 9 2 8
●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
CNT ST/SP
(Totalizer START/STOP)
H signal:Totalizer STOP
L signal:Totalizer START
CNT RS/ST
(Totalizer RESET/START)
H signal:Totalizer START
L signal:Totalizer RESET
CNT ST/SP
(Totalizer START/STOP)
H signal:Totalizer START
L signal:Totalizer STOP
CNT RS/ST
(Totalizer RESET/START)
H signal:Totalizer RESET
L signal:Totalizer START
L LEVEL
H LEVEL
●Changing the digital input function
The following is an example to change the Digital Input (DI) function from No use (NO
USE) to Totalizer Start / Stop (CNT ST/SP).
Switch operation
Description
Display example
I:DI
Select "DI FUNC" from the setting item
1 DI FUNC
selection menu.
2 DET LVL
3 EXIT
ESC
STEP1
DI FUNC
The current setting (NO USE in this
example) appears.
NO USE
ESC
STEP2
DI FUNC
.
* Pushing ESC
screen.
returns you to the menu
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
NO USE
STEP3
Then push
DI FUNC
CNT ST/SP
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Then push
.
You can continue to change the setting item.
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
6 F 8 A 0 9 2 8
Switch operation
STEP4(=END)
Display example
DI FUNC
CNT ST/SP
SET OK?
ESC
O K
N O
Description
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
Pushing ESC cancels the setting operation
and exits the setting screen.
8.2.20 Count Rate (Pulse Rate), Pulse Width Setting Mode and Pulse Width
In this section, the volume per count (pulse) for totalized flow operation and the pulse width for
totalization pulse output can be set.
The totalized flow counts is not affected by the display setting but it is recommended that you set a
volume unit for Display 1 or Display 2 to check its operation.
●The count rate must be set so that the pulse output at 100% output is within the range below:
3.6 to 36000000 pulse/h (0.001 to 10000 pulse/s).
If you try to set a value outside of this range, an error message HIGH OVER SPEC or LOW
OVER SPEC appears and the value returns to the previous value.
Note: Count rate setting range
Example:
In the case the range is 360m3/h (0.1m3/s),
Minimum value (for 36000000 pulse/h):
360(m3/h) / 36000000(pulse/h) = 0.00001m3 = 0.1L (liter).
Maximum value (for 3.6 pulse/h):
360(m3/h) / 3.6(pulse/h) = 100m3.
● The pulse width must be set to a value within the range of 0.3ms to 500ms.
If you try to set a value exceeding 500 ms, the value will be forcibly changed to 500ms.
● The pulse width must be set to 40% or less of the period of pulse frequency at 100% output.
If you try to set a value exceeding the limit, regardless of the setting above, an error message HIGH
OVER SPEC appears and the value returns to the previous value.
If the pulse width is set to 0, it will be automatically set to 40% of the period of pulse frequency at
100% output. In this case, the pulse width setting mode remains in the Manual mode. If the calculation
result exceeds 100ms, it will be forcibly set to 100ms.
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● 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.
Even after the count rate is set, the pulse width is not changed.
* However, if the pulse width becomes out of the setting
MANUAL
range as a result of count rate setting, the screen is
automatically switched to the pulse width setting screen
after the count rate is set.
Note: If the count rate exceeds 1000 (pulse/s), the pulse width setting mode is limited to the AUTO
mode only and you cannot set the width manually.
● Examples of pulse width setting range
Example 1
In the case the range is 360m3/h (1m3/s) and the count rate is 0.0001m3:
Since the pulse rate is 360 (m3/h) / 0.0001(m3) = 3600000 pulse/h (1000 pulse/s), the period
of pulse frequency at full scale is 1ms.
Therefore, the pulse width can be set only to: 1ms × 40% = 0.4ms only.
Example 2
In the case the range is 360m3/h (1m3/s) and the count rate is 1000m3:
Since the pulse rate is 360(m3/h) / 100(m3) = 3.6 pulse/h (0.001 pulse/s), the
period of pulse frequency at full scale is 1000000ms.
Therefore, the pulse width is: 1000000ms × 40% = 400000ms. However, since the
maximum value is 500ms, the pulse width becomes 500ms.
Example 3
In the case the range is 360m3/h (1m3/s), the count rate is 0.1m3 and the pulse width is set to
0ms:
Since the pulse rate is 360(m3/h) × 0.1(m3) = 3600 pulse/h (1 pulse/s), the period
of pulse frequency at full scale is 1000ms.
Therefore, the pulse width is: 1000ms × 40% = 400ms. However, since the
maximum value is 100ms in the case of Auto setting, the pulse width
becomes 100ms.
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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 0.01m3 to 0.9 L.
Switch operation
Description
Display example
CNT RATE
The currently set count rate (0.01m3 in this
STEP1
example) appears.
0.01000
Then push
m3
.
ESC
STEP2
CNT RATE
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
0.01000
m3
STEP3
CNT RATE
Push
to move the cursor to the digit
of the unit and push
to change from
“m3” to “L”.
10.0000
L
STEP4
CNT RATE
Push
to move the cursor to the digit
you want to change and push
to
change the number of the digit.
0.90000
L
STEP4(=END)
CNT RATE
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
0.90000
SET OK?
ESC
L
O K
Pushing ESC cancels the setting operation
and exits the setting screen.
N O
To set the pulse width setting mode or pulse width, select the relevant item below from the setting
menu.
Pulse width setting mode
Pulse width
PLS MODE
PLS WID
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Note 1: The units of count rate change cyclically as shown below:
m³
L
mL
bbl
gal
pt
qt
ft3
Mgl
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:
Pulse width will be automatically set according to the count rate.
When the pulse width setting mode is MANUAL:
After the count rate is set, if the pulse width is out of the setting
range, the screen changes automatically to the pulse width setting
screen.
(2) Digital Output 1 (DO1)
When the count rate is set from zero to other than zero:
If the digital output setting is NO USE,
Pulse output (PLS OUT) will be automatically set to Digital Output 1 (DO1)
setting.
Note 3:
Relationship between the count rate and totalizer operations
Count rate is set to zero while totalizer is in operation.
↓
Totalizer will be forced to stop.
↓
Count rate is set to other than zero.
↓
Totalizer starts counting again.
* If the count rate is changed from a value other than zero to other value, the operation of
totalizer does not change.
Note 4: If the pulse width setting mode is set to MANUAL, the screen automatically changes to the
pulse width setting screen.
8.2.21 Preset Count
You can set the preset count for the preset counter.
Preset count can be set within the range of 0 to 99999999.
Preset counter will not be affected by the display setting but it is recommended that one of the volume
units be set as the display unit so that the operating condition of the counter can be checked.
* Preset mode can be selected. For details, see 8.2.22, “Preset Mode.”
Note: Preset counter works only for foreword flow counts.
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6 F 8 A 0 9 2 8
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
Description
Display example
K:PRESET C
Select "PRST VAL" from the setting item
1 PRST VAL
selection menu.
2 OUT MODE
3 EXIT
ESC
STEP1
PRST VAL
The currently set value (500 in this
example) appears.
00000500
Then push
.
ESC
STEP2
PRST VAL
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
00000500
STEP3
PRST VAL
Push
to move the cursor to the
digit you want to change and push
to change the number of the digit.
00001000
STEP4(=END)
PRST VAL
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
00001000
SET OK?
ESC
O K
N O
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Pushing ESC cancels the setting operation
and exits the setting screen.
6 F 8 A 0 9 2 8
8.2.22 Preset Mode
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.
50ms PLS
Outputs a one shot pulse of 50ms width.
500ms PLS
Outputs a one shot pulse of 500ms width.
Note: If you set the preset mode to "50ms PLS" or "500ms PLS", you need to set the preset
count to 1, 2, 5, 25, 125 ×10n. (If you set a value that does not meet this condition, the
preset output timing may be shifted when the totalizer overflows.
You can check or change the preset mode as described below.
The following is an example to change the present mode from Output condition hold (HOLD)
to One-shot pulse output with pulse width of 50ms (50ms PLS).
Switch operation
Description
Display example
K:PRESET C
Select "OUT MODE" from the setting item
1 PRST VAL
selection menu.
2 OUT MODE
3 EXIT
ESC
STEP1
OUT MODE
The current setting (HOLD in this example)
appears.
HOLD
ESC
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Then push
.
* Pushing ESC
screen.
returns you to the menu
6 F 8 A 0 9 2 8
Switch operation
STEP2
Display example
OUT MODE
HOLD
STEP3
Then push
.
You can continue to change the setting item.
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
OUT MODE
50ms PLS
STEP4(=END)
OUT MODE
50ms PLS
SET OK?
ESC
O K
Description
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
8.2.23 Flow Rate High/Low Alarm and High-High/Low-Low Alarm
The high/low limit, high-high/low-low limit of the flow rate, at which an alarm is generated, can be set
as % value of the span flow rate of the set maximum range.
The high/low alarm, and high-high/low-low alarm values for flow rate can be set within the range of
−10% to 110% (percentage to Range 1) in increments of 0.1%.
●Changing the high/low alarm on/off setting
The following is an example to change the high alarm setting from OFF to ON.
Switch operation
Description
Display example
L:H/L ALM1
Select "H SET" from the setting item
1 H SET
selection menu.
2
3
4
5
H VAL
L SET
L VAL
EXIT
ESC
STEP1
H SET
The current setting (OFF in this example)
appears.
OFF
ESC
- 92 -
Then push
.
* Pushing ESC
screen.
returns you to the menu
6 F 8 A 0 9 2 8
Switch operation
STEP2
Display example
H SET
OFF
STEP3
Then push
.
You can continue to change the setting item.
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
H SET
ON
STEP4(=END)
H SET
ON
SET OK?
ESC
Description
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
O K
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
●Changing the high/low alarm value
The following is an example to change the high alarm value from +105% to +103%.
Switch operation
Description
Display example
L:H/L ALM1
Select "H VAL" from the setting item
1 H SET
selection menu.
2
3
4
5
H VAL
L SET
L VAL
EXIT
ESC
STEP1
H VAL
The currently set value (+105% in this
example) appears.
+105.0
Then push
%
.
ESC
STEP2
H VAL
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
+105.0
%
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6 F 8 A 0 9 2 8
Switch operation
STEP3
Display example
H VAL
+103.0
Description
Push
to move the cursor to the
digit you want to change and push
to change the number of the digit.
%
STEP4(=END)
H VAL
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
+103.0
SET OK?
ESC
O K
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
Note: If you try to set a value outside of the range −10% to +110%, LOW OVER SPEC or
HIGH OVER SPEC error appears and the value returns to the previous value. Set a
value once again.
8.2.24 Empty Pipe Alarm Setting
You can select on/off setting for the alarm to notify that the fluid in the measuring pipe is emptied. If
the empty pipe alarm is set to ON and the fluid is emptied, EMPTY ALARM error will be displayed.
●Empty pipe alarm setting
Selection items
Description
OFF
Empty pipe alarm is off
NORMAL
Empty pipe alarm is on, and sensitivity level is low.
SENS
Empty pipe alarm is on, and sensitivity level is medium.
SENS-HI
Empty pipe alarm is on, and sensitivity level is high.
* When you use the fluid empty alarm, usually set NORMAL (sensitivity level low). Use
other settings of sensitivity level SENS or SENS-HI only when it is difficult to detect an
empty condition because of the conditions of measuring fluid or piping.
●Changing the empty pipe alarm setting
The following is an example to change the alarm setting from OFF to SENS-HI.
Switch operation
Description
Display example
N:SELF CHK
Select "EMPTY" from the setting item
1 EMPTY
selection menu.
2 SELF CHK
3 CONV ALM
4 EXIT
ESC
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6 F 8 A 0 9 2 8
Switch operation
STEP1
Display example
EMPTY
OFF
Description
The current setting (OFF in this example)
appears.
Then push
* Pushing ESC returns you to the menu
screen.
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
ESC
STEP2
EMPTY
OFF
STEP3
Then push
.
You can continue to change the setting item.
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
EMPTY
SENS-HI
STEP4(=END)
EMPTY
SENS-HI
SET OK?
ESC
.
O K
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
8.2.25 Mag-Prover-Self Diagnosis ON/OFF Setting
You can select on/off setting for Mag-Prover’s self-diagnosis function.
If the self-diagnosis function is set to OFF, no error message is displayed even if any of the errors listed
below occurs.
• ROM error
• RAM error
• System parameter error
• Excitation cable is not connected or its wiring is open
• Excitation circuit failure
• ADC circuit error
• Totalizer data is destroyed
Selection items
Description
OFF
Self-diagnosis function is turned off.
ON
Self-diagnosis function is turned on.
If this function is set to ON and an error occurs, an error message appears on the Display 2 measured
value screen. If an error occurs, the measurement items specified for Display 2 screen cannot be
displayed unless the error is removed.
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6 F 8 A 0 9 2 8
●Changing the Mag-Prover’s self-diagnosis function setting
The following is an example to change the Mag-Prover’s self-diagnosis setting from OFF to ON.
Switch operation
Description
Display example
N:SELF CHK
Select "SELF CHK" from the setting item
1 EMPTY
selection menu.
2 SELF CHK
3 CONV ALM
4 EXIT
ESC
SELF CHK
STEP1
The current setting (OFF in this example)
appears.
OFF
Then push
* Pushing ESC returns you to the menu
screen.
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
ESC
SELF CHK
STEP2
OFF
Then push
.
You can continue to change the setting item.
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
SELF CHK
STEP3
ON
STEP4(=END)
SELF CHK
ON
SET OK?
ESC
O K
.
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
8.2.26 Converter Alarm
If "Converter alarm output" is set for Digital output function, a digital signal will be output in case
the converter’s self-diagnosis function detects an error.
In this case, you can set whether the empty pipe alarm is to be included in the converter alarm items.
Selection items
CONV ONLY
Description
Empty pipe alarm is not included in the converter alarm
output items.
WITH EMP
Empty pipe alarm is included in the converter alarm
output items.
* For other alarm items, see 8.2.25 "Mag-Prover-Self Diagnosis ON/OFF Setting."
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6 F 8 A 0 9 2 8
●Changing the converter alarm function
The following is an example to change the converter alarm function from WITH EMP to
CONV ONLY.
Switch operation
Description
Display example
N:SELF CHK
Select "CONV ALM" from the setting item
1 EMPTY
selection menu.
2 SELF CHK
3 CONV ALM
4 EXIT
ESC
STEP1
CONV ALM
The current setting (WITH EMP in this
example) appears.
WITH EMP
Then push
* Pushing ESC returns you to the menu
screen.
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
ESC
STEP2
CONV ALM
WITH EMP
STEP3
Then push
.
You can continue to change the setting item.
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
CONV ALM
CONV ONLY
STEP4(=END)
CONV ALM
CONV ONLY
SET OK?
ESC
O K
.
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
8.2.27 Fixed Value Output
The fixed value output function is used to output a fixed current and/or a fixed pulse output
independently of the flow rate signal. (The fixed pulse output is available only when Digital Output 1
(DO1) or Digital Output 2 (DO2) is used for pulse output function. For DO2, output can be obtained
only when fixed pulse output is 100pps or less.
The fixed-value output can be set in the ranges described below. (Current output and pulse output can
be set and output at the same time.)
• Fixed current output:
2.4 to 24 mA (can be set in increments of 0.1 mA)
• Fixed pulse output:
0 to 10000 pps (can be set in increments of 1 pps)
If fixed output is set to ON, Display 2 screen is used to indicate the fixed output in the measurement
mode.
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6 F 8 A 0 9 2 8
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.
Digital output other than
Status in hold
pulse output
Display
Display 2 screen: Used to indicate the fixed output
(Note)
Display example:
* 1 0 0 0 0 P P S *
*
2 0 . 0 m A
*
First line:
Pulse count (5 digits maximum), Unit: (PPS) fixed
Second line: Current output (4 digits including a decimal point), Unit: (mA) fixed
This fixed value output function does not work in the calibration mode.
When OFF is selected in the fixed output function, the setting for output is not needed.
●Changing the fixed output function
The following procedure shows how to set the fixed output to ON and set the fixed current
value/fixed pulse value. The fixed current value and fixed pulse value can be set
independently.
Switch operation
Description
Display example
O:FIX OUT
Select "FIX SET" from the setting item
1 FIX SET
selection menu.
2 CUR VAL
3 PLS VAL
4 EXIT
ESC
STEP1
FIX SET
The current setting (OFF in this example)
appears.
OFF
Then push
* Pushing ESC returns you to the menu
screen.
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
ESC
STEP2
FIX SET
OFF
STEP3
.
Then push
.
You can continue to change the setting item.
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
FIX SET
ON
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Switch operation
STEP4
Display example
FIX SET
ON
SET OK?
ESC
N O
O K
CUR VAL
STEP5
mA
CUR VAL
STEP6
Pushing ESC cancels the setting operation
and exits the setting screen.
The screen automatically changes to the
fixed current value setting screen.
The currently set value (4.0mA in this
example) appears.
04.0
O K
Description
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
Push
to move the cursor to the
digit you want to change and push
to change the number of the digit.
20.0
mA
CUR VAL
STEP7
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
20.0
SET OK?
ESC
mA
O K
N O
PLS VAL
STEP8
The screen automatically changes to the
fixed pulse rate setting screen.
The currently set value (0 PPS in this
example) appears.
00000
O K
STEP9
Pushing ESC cancels the setting operation
and exits the setting screen.
PPS
PLS VAL
Push
to move the cursor to the
digit you want to change and push
to change the number of the digit.
00100
PPS
STEP10(=END)
PLS VAL
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
00100
PPS
SET OK?
ESC
O K
N O
- 99 -
Pushing ESC cancels the setting operation
and exits the setting screen.
6 F 8 A 0 9 2 8
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. The pulse width must not
be greater than 40% of the period of the fixed output set frequency. However, if the setting
exceeds 1000pps, the pulse width automatically will be set to 40% of the period of the fixed
output set frequency.
Note 3: If the fixed output is set to ON, the screen automatically changes to the fixed output current
value and fixed output pulse value setting screen. However, the fixed output actually starts
when the fixed output pulse value setting is completed. (If the fixed output current value or
fixed output pulse value is set independently, the fixed output starts when either of the setting
is completed.)
8.2.28 Password Setting
The password function is provided to prohibit the settings and adjustment for some of the functions
affecting the flow measurement. See the setting menu in 7.4 “Setting and Calibration Items Selection
List.”
You can check or change the password as described below.
●Checking the password
Switch operation
Display example
P:OTHERS
1 PASSWORD
2 LCD ADJ
3 SW POSN
4 DET TYPE
5 EXIT
Description
Select "PASSWORD" from the setting item
selection menu.
ESC
STEP1
PASSWORD
The currently set password appears.
123
ESC
STEP2(=END)
ESC
P:OTHERS
1 PASSWORD
2 LCD ADJ
3 SW POSN
4 DET TYPE
5 EXIT
Pushing ESC
menu.
ESC
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returns you to the setting
6 F 8 A 0 9 2 8
* 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
*** and the password cannot be checked.
***
ESC
●Changing the password
The following is an example to change the password from 123 to 453.
Switch operation
Description
Display example
PASSWORD
Select
"PASSWORD"
from the setting item
STEP1
selection menu.
123
The currently set password (123 in this
example) appears.
Then push
.
ESC
STEP2
PASSWORD
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
123
STEP3
PASSWORD
Push
to move the cursor to the
digit you want to change and push
to change the number of the digit.
453
STEP4(=END)
PASSWORD
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
453
SET OK?
ESC
O K
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
Note 1: If you set 000 for the password, it is considered as if the password is not used. In this case, the
password input confirmation screen does not appear when you move from the measurement
mode to the setting mode and all parameter setting items and restrictions on the parameter
setting items and calibration screen will be released.
Note 2: When you set your password, please be sure not to forget your password.
The password including how to check the password should be managed based on the
management standard of the system you use.
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6 F 8 A 0 9 2 8
8.2.29 LCD Adjustment
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
1
2
3
Light
4
5
Dark
The LCD density adjustment value is set to "3" when shipped from the factory.
The display of the LCD gradually becomes thinner over time.
If the display is getting difficult to read, you need to adjust the density level using this parameter.
The following is an example to change the LCD density adjustment level from 3 to 5 DARK.
Switch operation
Description
Display example
P:OTHERS
Select "LCD ADJ" from the setting item
1 PASSWORD
selection menu.
2
3
4
5
LCD ADJ
SW POSN
DET TYPE
EXIT
ESC
STEP1
LCD ADJ
The current setting (3 in this example)
appears.
3
Then push
* Pushing ESC returns you to the menu
screen.
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
ESC
STEP2
LCD ADJ
3
STEP3
Then push
.
You can continue to change the setting item.
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
LCD ADJ
5 DARK
STEP4(=END)
LCD ADJ
5 DARK
SET OK?
ESC
O K
.
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
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6 F 8 A 0 9 2 8
8.2.30 Switch Position Setting
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.
You can set the switch position by selecting one from four positions described below.
(1) Switch position: TOP
The infrared switches are located at the top with the front facing you.
ESC
Infrared switches
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
(2) Switch position: BOTTOM (Standard)
The infrared switches are located at the bottom with the front facing you.
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
Infrared switches
ESC
(3) Switch position: LEFT
The infrared switches are located at left with the front facing you.
ESC
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
Infrared switches
(4) Switch position : RIGHT
The infrared switches are located at right with the front facing you.
ESC
A:DETECTOR
1 EXC CUR
2 SIZE
3 EXC FREQ
4 FLOW DIR
5 EXIT
Infrared switches
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6 F 8 A 0 9 2 8
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
3
4
5
LCD ADJ
SW POSN
DET TYPE
EXIT
ESC
SW POSN
STEP1
The current setting (BOTTOM in this
example) appears.
BOTTOM
Then push
* Pushing ESC returns you to the menu
screen.
The switches at the bottom change.
(
are shown.)
At the same time, the cursor appears.
(The item indicated by the cursor is
highlighted.)
ESC
SW POSN
STEP2
BOTTOM
Then push
.
You can continue to change the setting item.
Push
to change the selection
items.
: Selected item is scrolled up.
: Selected item is scrolled down.
When the desired item is selected, push
to set the item temporarily.
When you push
, a message appears
to confirm whether the setting is OK or not.
If OK, push O K . If you want to redo the
setting, push N O .
SW POSN
STEP3
TOP
STEP4(=END)
SW POSN
TOP
SET OK?
ESC
O K
.
N O
Pushing ESC cancels the setting operation
and exits the setting screen.
8.2.31 Communication Setting
This setting is needed when optional PROFIBUS or Modbus communication board is installed.
For details, refer to the instruction manual of PROFIBUS or Modbus communication board.
Note: If communication board is not used, this address setting is not needed.
8.2.32 Detector type
Please set Detector type according to the model of the combined detector as shown in the table below.
Detector type
LF410 LF430
○
○
LF450
○
Model of detector
LF470 LF490 LF654
○
○
○
EXC CAL
K-FAC CAL
Note: Please note that this setting influences the instruction.
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LF664 GF630
○
○
GF640
○
6 F 8 A 0 9 2 8
8.3 Parameter initial settings list
Unless otherwise specified, the default values for each parameter shown below are set when shipped from
the factory:
Parameter names
Excitation frequency
Flow direction
Display 1
Display 2
Display digit setting
(for Display 1 and Display 2)
Custom coefficient
Default value(SI unit)
Value(*1)
NORMAL
m3/h
m3
1/1000
Default value(English unit)
Value(*1)
NORMAL
gal/min
COUNT B
1/1000
1.0
1.0
“ CUSTOM”
“ CUSTOM”
Custom unit
(Head of character string is blank ) (Head of character string is blank )
SINGLE
SINGLE
Range type
Range 1
Value(*1)
Value(*1)
Ranges 2 to 4
0.00 m3/h
0.00 gal/min
Hysteresis
3.0 %
3.0 %
Damping constant
1.0s
5.0s
Rate-of-change limit
0.0 %
0.0 %
Control limit time
0.0 s
0.0 s
Low cutoff
1.0 %
1.0 %
Display low cutoff
LINEAR
LINEAR
Manual zero
0.0 %
0.0 %
4mA
4mA
4−20mADC alarm output
Output low limit setting
4mA
4mA
Digital output 1
PLS OUT
PLS OUT
Digital output 2
NO USE
EMPTY ALM
DO1/DO2 active status
NormOPEN
NormOPEN
Digital input
NO USE
NO USE
DI detective level
H LEVEL
H LEVEL
Count rate
Value(*1)
Value(*1)
Pulse width setting mode
AUTO
AUTO
Pulse width
100 ms
5 ms
Preset count
00000000
00000000
Preset function
HOLD
HOLD
High alarm On/Off
OFF
OFF
High alarm value
0.0 %
0.0 %
Low alarm On/Off
OFF
OFF
Low alarm value
0.0 %
0.0 %
High-High alarm On/Off
OFF
OFF
High-High alarm value
0.0 %
0.0 %
Low-Low alarm On/Off
OFF
OFF
Low-Low alarm value
0.0 %
0.0 %
Empty pipe alarm
NORMAL
NORMAL
Self-diagnosis On/Off
ON
ON
Converter alarm
CONV ONLY
CONV ONLY
Fixed value output
OFF
OFF
Fixed value current
4mA
4mA
Fixed value pulse
0 pps
0 pps
Password
000
000
LCD density adjustment
3
3
Switch position setting
BOTTOM
BOTTOM
Detector type
EXC CAL
EXC CAL
*1: See the setting values for each meter size in the table below.
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6 F 8 A 0 9 2 8
When parameter value was appointed in order, parameter value may be different from list.
Setting values for each meter size
Ex.
Range 1 (SI unit)
Meter Size
Freq
(mm)
(m3/h)
(m/s)
(Hz)
15
24
2
3.144
25
32
40
50
65
80
100
125
150
200
250
300
350
400
450
500
600
700
750
800
900
24
24
24
24
24
24
24
24
24
24
12
12
12
12
12
6
6
6
6
6
6
6
10
15
25
40
60
100
150
200
300
600
900
1200
1600
2000
3000
4000
5000
6000
7000
9000
3.395
3.454
3.316
3.537
3.348
3.316
3.537
3.395
3.144
2.653
3.395
3.537
3.465
3.537
3.493
4.244
3.930
3.609
3.773
3.868
3.930
Range 1 (English unit)
Count rate
(gal/min)
(ft/s)
(SI unit)
(English unit)
25
75
125
175
300
475
650
1000
1750
2500
4500
7000
10000
12000
16000
20000
25000
40000
50000
60000
70000
80000
29.283
31.625
32.171
28.826
31.625
29.629
26.766
26.354
31.625
29.283
29.649
29.517
28.283
25.817
26.354
26.029
26.354
29.283
26.892
28.112
28.825
26.029
0.01m3
0.01 m3
0.01 m3
0.01 m3
0.1 m3
0.1 m3
0.1 m3
0.1 m3
0.1 m3
1 m3
1 m3
1 m3
1 m3
1 m3
1 m3
1 m3
1 m3
1 m3
1 m3
1 m3
1 m3
1 m3
1gal
1gal
1gal
1gal
10gal
10gal
10gal
10gal
10gal
100gal
100gal
100gal
100gal
100gal
100gal
100gal
100gal
100gal
100gal
100gal
100gal
100gal
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6 F 8 A 0 9 2 8
9. Mag-Prover-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.
However, calibration is already performed when shipped from the factory. Do not perform
change calibration unless it is specificity required.
Items
9.2.1
9.2.2
9.2.3
9.2.4
Function items
0 % flow rate calibration
50 % flow rate calibration
100 % flow rate calibration
Checking the excitation current output
- 107 -
Display example
CAL
0%
CAL 50%
CAL 100%
EXC DSPL
6 F 8 A 0 9 2 8
9.2 Calibration Using Mag-Prover’s Built-In Signal Source
9.2.1 0 % Flow Rate Calibration (Zero Calibration)
Using Mag-Prover’s internal calibration circuit, 0% flow rate calibration (hereafter called zero
calibration) can be performed.
●Zero point check / calibration
Switch operation
Display example
R:CAL
1 CAL
0%
2 CAL 50%
3 CAL 100%
4 EXC DSPL
5 EXIT
Description
Select "CAL 0" from the setting item
selection menu.
ESC
CAL
STEP1
0%
When the calibration screen is selected, the
internal simulation circuit starts working and
0% value using the internal simulation
signal appears.
Then push and hold
longer.
* Pushing ESC returns you to the setting
menu.
0.1
%
ESC
ADJ READY
STEP2
The title of the screen changes to “ADJ
READY” and the converter is is ready for
calibration.
0.1
%
Longer
returns you to the previous
N O
O K
STEP3
Pushing N O
screen.
NOW 0%
ADJUSTING
Push
rate.
CAL
It takes several seconds to perform
calibration for 0% flow rate and the
simulated value of 0% after calibration
appears.
O K to start calibration for 0% flow
O K
STEP4(=END)
0%
0.0
%
ESC
Pushing
menu.
ESC
returns you to the setting
Note 1:
To perform calibration, push and hold
Note 2:
To cancel the adjustment when ADJ READY is displayed, push N O
The screen returns to the zero display using the simulation input.
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longer.
.
6 F 8 A 0 9 2 8
9.2.2 50 % Flow Rate Calibration
Using Mag-Prover’s internal calibration circuit, 50% flow rate calibration can be confirmed.
9.2.3 100 % Flow Rate Calibration (Span Calibration)
Using Mag-Prover’s internal calibration circuit, 100% flow rate calibration can be performed. For
calibration procedure, see the calibration procedure for 0% flow rate. (For 100% flow rate calibration,
select "CAL 100%" from the setting menu.)
9.2.4 Checking the Excitation Current
You can monitor the exciting current value.
●Checking the exciting current value
Switch operation
Display example
R:CAL
1 CAL
0%
2 CAL 50%
3 CAL 100%
4 EXC DSPL
5 EXIT
Description
Select "EX DSPL" in the setting item
selection screen.
ESC
STEP1
EXC DSPL
The excitation current value appears.
0.1998
A
Pushing
menu.
ESC
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ESC
returns you to the setting
6 F 8 A 0 9 2 8
10. Functional Description
The LF62*F 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.
The following functions are provided using the digital I/O functions are described below.
Functions
Required DO, DI
Outline description
Totalization
DO:1
DI:0 or 1
Totalizes the flow volume in volumetric unit.
The totalized flow volume can be output (pulse output) for each unit
of volume.
The totalizer and pulse output can be controlled (start, stop and reset)
by an external signal.
Multiple ranges
DO:1 or 2
DI:0 or 1
Multiple measuring ranges can be selected in accordance with the flow
rate. The measuring ranges can be selected either automatically or by
an external signal.
Forward and reverse ranges
DO:1
Forward and reverse flows can be measured. The forward and reverse
flow measurements can be used together with multiple ranges function.
High / Low alarm
High-High / Low-Low alarm
DO:1 or 2
Outputs an alarm signal when the flow rate signal exceeds or lowers
below the preset values.
Preset counter
DO:1
When the totalizer count exceeds its preset value, the converter
outputs a contact output signal.
Remote still water
zero adjustment
DI:1
Still water zero adjustment can be started by an external signal.
Remote fixed value output
DI:1
Arbitrarily fixed current output and/or fixed pulse output can be used to
check a process loop circuit of output.
The fixed output mode can also be selected by an external signal.
Converter failure alarm
DO:1
The converter outputs an alarm signal if an error such as memory error
or excitation circuit error occurs.
DO:2
DI:1
Working in line with upper/lower range selection by an external signal,
high/low alarm and high-high / low-low alarm can be switched for the
flow rate signal to output an alarm signal.
Multi-range high
/ low alarm
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6 F 8 A 0 9 2 8
10.1 Digital I/O Specifications
The specifications of the digital I/O terminals for the converter for electromagnetic flowmeter: LF62*F are
as follows:
„ Digital Output 1(DO1 )
Output type:
Transistor open collector
Number of outputs:
1
Capacity:
30 V dc, 200 mA maximum
„ Digital Output 2(DO2 )
Output type:
Solidstate relay (non polarity)
Number of outputs:
1
Capacity:
150 V dc, 150 mA maximum
150 V ac(peal-to-peak), 100 mA maximum
„ Digital Input (DI )
Input signal:
20 to 30 V dc voltage signal
• High input level—20 to 30 V dc
• Low input level—2 V dc maximum
Input resistance:
Approximately 2.7 kΩ
Number of inputs:
One point
• Each I/O terminal can be used as a specified function terminal when selected.
• Terminal COM is the signal COMMON for the other three terminals (DO1, DO2 and DI).
• Each terminal is isolated from the internal circuits.
(The output terminals are not isolated from each other.)
• In standard specification (without digital I/O), semiconductor contact, photo coupler, and resistor
are not built in. Left DO2 and DI unconnected.
Solidstate relay
Transistor open collector
Photo coupler
Resistor
COM
Flowmeter
DI
DO2
Voltage input (DI)
Contact output 2 (DO2)
Contact output 1 (DO1)
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DO1
6 F 8 A 0 9 2 8
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.”
* The count rate can be set within the range below in reference to the
setting range:
3.6 (pulse/s) to 36000 pulse/h
(1/1000 pulse/s to 10000 pulse/s) (Note 1)
* The pulse width can be set within the range 0.3ms to 500ms.
However, the pulse width must be set to 40% or less of the period of
output frequency at full scale. (Note 2)
If the pulse width setting mode is AUTO, the pulse width is automatically set. If the pulse width
setting mode is MANUAL, set it after checking the acceptable signal width of the receiving
instruments.
If pulse output is not used, pulse width setting is not needed.
DO setting
Refer to 8.2.18, "Digital Output" to set the Digital Output 1 (DO1) for Pulse output (PLS
OUT).
If the digital output function is not set (NO USE) though count rate is set, it will be set to
pulse output automatically.
If pulse output is not used, this setting is not needed.
Return to Measurement Mode
Set the operation mode of the system to the measurement mode. Refer to 7.3.1, “Changing the
Mode.”
Clear (reset) the totalizer. (Note 3)
Clear the count by pushing and holding CLR on the totalizer control screen.
If you have changed the count rate, clear (reset) the totalizer before you start the totalizer.
Start the totalizer. (Note 3)
Start the totalizer by pushing
on the totalizer control screen and check that “ ” is
shown on the display indicating that the totalizer is in operation.
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6 F 8 A 0 9 2 8
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 3600m3/h (1m3/s),
Minimum value (for 36000000 pulse/h):
3600 (m3/h) / 36000000 (pulses/h) = 0.001m3 = 0.1 L (liter)
Maximum value (for 3.6 pulse/h):
3600 (m3/h) / 3.6 (pulses/h) = 1000m3
Note 2: Example of pulse width setting range
The pulse width can be set within the range 0.3ms to 500ms in increments of 1ms. However,
the pulse width must be set to 40% or less of the period of pulse frequency at full scale
because of the setting range and count rate requirements.
If “0” is set, the pulse width automatically will be set to 40% of the period of pulse frequency
at full scale. (100ms max.)
(Example 1)
Range: 3600m3/h (1m3/s)
Count rate: 0.001m3
Since the pulse rate is
3600(m3/h) / 0.001(m3) =36000000 pulses/h =1000pulses/p,
the period of pulse frequency at full scale is 1ms.
Therefore, the pulse width can be set only to
1ms × 40% = 0.4ms
(Example 2)
Range: 3600m3/h (1m3/s)
Count rate: 1000m3
Since the pulse rate is
3600(m3/h) / 1000(m3) = 3.6 pulse/h (0.001 pps),
the period of pulse frequency at full scale is 1000000ms
Therefore, the pulse width = 1000000ms × 40% = 400000ms.
However, the maximum pulse width is 500ms,
the pulse width becomes 500ms.
(Example 3)
Range: 3600m3/h (1m3/s)
Count rate: 1m3
When pulse width is set to 0ms:
Since the pulse rate is
3600 (m3/h) / 1(m3) = 3600 pulse/h (1pps)
the period of pulse frequency at full scale is 1000ms.
Therefore, the pulse width = 1000ms × 40% = 400ms.
However, the pulse width that automatically set is 100ms max.
the pulse width becomes 100ms.
Not 3: Model LF62*F has a function to start / stop or clear the totalizer. For details of operation, see
“Totalizer Operation” below.
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6 F 8 A 0 9 2 8
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
ESC
SET
CNT
CNT CTRL
When you push CNT in the measurement
mode, the screen moves to the totalizer
12345678
control screen.
CNT
Totalized flow count (both directions)
FRD ■
appears automatically on this screen.
In addition, the switches
CLR
ESC
(
CLR are shown.)
ESC
* ■ is displayed while the totalizer is in operation and
is displayed when it
is stopped.
* If an erroneous password is input when password is asked, or if it is a sealed
specification, CLR is not displayed.
CNT CTRL
When you push
, the totalizer starts
counting and
appears on the screen. In
12345679
addition,
changes to ■ .
FRD
■
ESC
CLR
CNT CTRL
CLR
Longer
When you push and hold CLR longer, a
confirmation message appears.
12345679
FRD
CLR OK?
NO
OK
CNT CTRL
Pushing OK
clears the totalizer and
pushing NO cancels the clear operation.
Pushing ESC at the end returns you to the
measurement mode.
0
OK
FRD
■
ESC
CLR
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6 F 8 A 0 9 2 8
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.
Note 2:If you reset the totalizer, flow counts for both directions will be cleared to zero at the same time.
Note 3:Non-volatile memory is used to store the totalizer count. Therefore, the value will be retained in
the memory even if power is turned off.
Note 4:In the case of sealed specification, start and stop switches can only be used.
(Clear operation cannot be used.)
●Operation using the digital input
Remote operations for the totalizer and pulse output can be performed using the digital input.
Set the digital input function for this purpose referring to 8.2.19 “Digital Input.”
Operation with digital input (Default setting: Control signal level is in H level)
Digital input functions
Totalizer
Start/Stop
Totalizer
Reset/Start
DI input
Totalizer and pulse output operation
L level
Stops the totalizer and pulse output.
H level
Pulse signal is outputted.
H level
Clears the count and stops the totalizer.
L level
Pulse signal is outputted.
You can reverse the DI control signal level. See 8.2.19 “Digital Input.”
• When H level (H LEVEL) is selected:
The operation with the signal level is the same as the default setting above.
• When L level (L LEVEL) is selected:
The operation with the signal level is the same as the one shown below.
Operation with digital input signal (Control signal level: L level)
Digital input functions
Totalizer
Start/Stop
Totalizer
Reset/Start
DI input
Totalizer and pulse output operation
L level
Pulse signal is outputted.
H level
Stops the totalizer and pulse output.
H level
Pulse signal is outputted.
L level
Clears the count and stops the totalizer.
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6 F 8 A 0 9 2 8
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
(2) Bidirectional flows, automatic selection of multiple ranges
(3) Unidirectional flow, multiple ranges selected by external signal
(4) Bidirectional flows, multiple ranges selected by external signal
Proceed as follows to use the multi-range function.
Range setting
Refer to 8.2.9, “Span (Range)” to set as follows:
1. Select the Range type.
2. Set the span for Ranges 1 to 4.
3. Set the Hysteretic value.
DO/DI setting
Refer to 8.2.18, “Digital Output” and 8.2.19, “Digital Input” to set Digital Output 1
(DO1) and/or Digital Output 2 (DO2) to use them as Range outputs.
To use the multiple ranges selected by external signal, set the Digital Input (DI) as a
switch to select the ranges.
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6 F 8 A 0 9 2 8
„ Output performance of multi-range functions
(1) Automatic selection of unidirectional flow multi-range with an internal signal
Output (%)
125
Range 1
100
Hysteresis
(0~25%)
Range 4
Range 3
20mA
Range 2
0
4mA
Reverse
Range output No.1
Range output No.2
0
Forward direction
ON
OFF
ON
Flow rate direction
ON
OFF
OFF
・ Current output when fluid flows in the reverse direction is the value set for the output low limit
(any one of 2.4/3.2/4.0mA).
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6 F 8 A 0 9 2 8
(2) Automatic selection of bidirectional flows multi-range with an internal signal
output (%)
125
100
Range 3
Range 1
20mA
Range 2
Range 4
Hysteresis
Hysteresis
0
4mA
Reverse direction
Range output No.1
Range output No.2
0
OFF
Forward direction
ON
ON
OFF
ON
OFF
„ Reverse to Forward direction change
■
Forward to Reverse direction change
Output
Output
←Low cutoff x 1.25
←Low cutoff
x 1.25
Low cutoff x 1.25→
Low cutoff
x 1.25→
4mA
0
0
-(Low cutoff x 1.25)→
Reverse direction
Range output
No.2
0
ON
Flow rate
← -(Low cutoff x 1.25)
Forward
Flow rate
OFF
From reverse range to forward range
Reverse
Range output
No.2
ON
0
Forward
OFF
From forward range to reverse range
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Flow rate
6 F 8 A 0 9 2 8
(3) Remote selection of unidirectional flows multi-range with an external signal
Output (%)
125
100
Range 2
Range 1
0
Reverse direction
External signal
Range output No.1
4mA
0
Forward direction
H level input
ON
Flow rate
L level input
OFF
• Current output when fluid flows in reverse direction is the output low limit setting (any one of 2.4 /
3.2 / 4.0mA).
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(4) Remote selection of bidirectional flows multi-range with an external signal
Output (%)
125
Range 3
Range 1
100
Range 2
↓
Range 4
↓
0
Reverse direction
External signal
Range output No.1
Range output No.2
4mA
0
L level
OFF
H level
ON
Forward direction
H level
ON
ON
L level
OFF
OFF
„ Reverse to Forward direction change
■
Forward to Reverse direction change
Output
Output
←Low cutoff x 1.25
←Low cutoff
x 1.25
Low cutoff x 1.25→
Low cutoff
x 1.25→
4mA
0
0
-(Low cutoff x 1.25)→
Reverse direction
Range output
No.2
0
ON
Flow rate
4mA
← -(Low cutoff x 1.25)
Forward
Flow rate
OFF
From reverse range to forward range
Reverse
Range output
No.2
ON
0
Forward
OFF
From forward range to reverse range
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Flow rate
6 F 8 A 0 9 2 8
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” and set the high alarm and/or low alarm to ON and set the limit value for
high and/or low alarm.
For alarms not used, set its setting to OFF.
High-High / Low-Low alarm setting
Refer to 8.2.23, “Flow Rate High/Low and High-High/Low-Low Alarm” and
set the high-high alarm and/or low-low alarm to ON and set the limit value for
high-high alarm and/or low-low alarm.
For alarms not used, set its setting to OFF.
DO setting
Refer to 8.2.18 "Digital Output" to set the Digital Output 1 (DO1) and
Digital Output 2 functions (DO2) for high alarm output/low output alarm or
high-high alarm output/ low-low alarm output.
In addition, set the alarm active status, either Normally Open or Normally Closed.
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6 F 8 A 0 9 2 8
„ High and Low Limit Alarm Output Performance (Same as for High High/Low Low limit
Alarm Output)
• Single range performance
Output (%)
High limit value
Hysteresis
2.5%
Hysteresis
2.5%
Low limit value
Alarm output
Alarm output
Alarm output
Time
• Multi-range performance
In an example shown below, a low limit alarm is set for the Range 2 and a high limit
alarm is set for the Range 1.
Output (%)
Range 1 High
limit value
Hysteresis
2.5%
Hysteresis
2.5%
Range 2 Low
limit value
Alarm output
Alarm output
Alarm output
Time
* When an alarm output condition occurs, Digital output 1 and 2 change to the output status set for an
alarm output condition. Alarm output contact is open while the converter is powered off.
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6 F 8 A 0 9 2 8
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.
Preset count,
Preset count function setting
• Refer to 8.2.21, “Preset Count” to set the desired preset count.
• Refer to 8.2.22, “Preset Mode” to select the desired preset output function.
DO/DI setting
• Refer to 8.2.18, “Digital Output” and 8.2.19, “Digital Input” to set Digital
Output 1 (DO1) or Digital Output 2 (DO2) for use as preset count function
output.
In addition, if you want to reset the totalizer by an external signal, set the Digital
Input (DI) as totalizer Reset / Start signal. (Set DI FUNC to “CNT RS/ST.”)
Refer to 8.2.19, “Digital Input” to use the Digital Input (DI) and set the control
signal level in accordance with the external input signal.
When the operation switch on the converter is used to reset the totalizer, the digital
input function (DI) setting is not needed.
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6 F 8 A 0 9 2 8
„ 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).
L level input
Totalizer flow counts
Preset point
0
Counter reset
Counter start
Preset point output
Counter reset
ON
OFF
Input/Output signal time chart
* When the Reset/Start signal is in H level (DI counter control signal level: H), the totalizer is reset to
zero and stops counting. When the Reset/Start signal goes to L level, the totalizer starts counting.
The preset point output goes ON when the totalizer counts reaches the preset point, and the output
goes OFF when the totalizer is reset to zero.
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6 F 8 A 0 9 2 8
(2) The following is an example for totalizer flow counts output in which the totalizer is reset with an
external signal (when one-shot pulse output mode is set).
Counter Reset/Start signal
(DI detective level is L).
H level input
L level input
Totalizer flow counts
Preset point
0
Counter reset
Counter reset
Counter start
Preset point output
For the totalizer is reset to zero,
the preset output goes OFF.
ON
OFF
For it takes the time set pulse width from
the output goes OFF
Input/Output signal time chart
* When the Reset/Start signal is in L level (DI counter control signal level: L), the totalizer is reset to
zero and stops counting. When the Reset/Start signal goes to H level, the totalizer starts counting.
The preset point output goes ON when the totalizer counts reaches the preset point. The output
goes OFF when the totalizer is reset to zero or when it takes the time set pulse width from the
output goes ON.
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6 F 8 A 0 9 2 8
(3) The following is an example for one-shot pulse output.
Setting preset count:100
200
100
Totalizer flow counts
0
ON
Preset point output
OFF
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.
When the preset value exceeds 100, the preset value is changed to 200 (adding the preset count of 100
to the current preset value of 100).
Then, the preset output goes ON when the count value exceeds the preset value of 200, and the
preset output goes OFF when its width reaches the set pulse width.
When the preset value exceeds 200, the preset value is changed to 300 (adding the preset count of
100 to the current preset value of 200).
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6 F 8 A 0 9 2 8
Note:
When the one-shot pulse output function is selected, if its pulse width is large compared
with the update period of the preset value. The output stays ON. To make sure to output as
one-shot pulse, set the preset value reach interval to be 2 signals or more of the pulse width
setting value.
Preset Pulse
Width
The Interval of that Totalizer
reaches the Preset Point
Example) Count rate:0.01 l
Flow verosity:10 l/s
Totalizer count up rate:1ms/COUNT
50ms
More than 100ms
Preset Count: more than 100
500ms
More than 1000ms
Preset Count: more than 1000
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6 F 8 A 0 9 2 8
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
start signal
10 seconds
▲
Zero adjustment start
L level
20 seconds
* The start signal must be set to H level first, then it must go to L level after the passage of more
than 10 seconds but not more than 20 seconds, as shown above.
If the signal does not go to L level within this specified period, it will be ignored.
10.7 Remote Selection of Fixed Value Output
A user-specified 4-20 mA output and pulse output can be selected with a DI signal.
Proceed as follows to use this function:
Fixed-value setting
„ Set the fixed-value for current output and for pulse output. See 8.2.27, “Fixed-Value
Output.” Set the fixed-value output enable/disable status to “OFF.”
If the pulse output is not used, fixed-value setting for pulse output is not needed.
DI function setting
„ Set DI to use as a fixed-value output control signal. See 8.2.19, “Digital Input.”
Control signal input conditions:
Control signal input level
4 –20 mA and pulse output
L level
Outputs the measured value.
H level
Outputs the fixed-value.
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6 F 8 A 0 9 2 8
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
RAM error
PARAMETER
FAILURE
EXC CUR
OPEN
EXC CUR
ERROR
ADC ERROR
System parameter error
Excitation circuit not connected or open
Excitation current error, excitation circuit error
ADC error
INVALID
TOTAL
Invalid totalizer counts
Note: A self-diagnosis error message appears on the Display 2 measured value screen. If this
happens, the measurement item specified on the Display 2 screen cannot be displayed
unless the error is removed. However, if OFF is set to 8.2.25, “Self Diagnosis
Function Setting,” an error does not appears even if an error occurs.
If you want to use a converter alarm output, set Digital Output 1 (DO1) or Digital Output 2
(DO2) for converter alarm output (CONV ALM) following 8.2.18, “Digital Output.”
In addition, set the alarm output condition to normally open (NormOPEN) or normally
closed (NormCLOSE) status.
●Contact output condition
NormOpen;
NormClose;
Note:
In case an error occurs, contact is closed.
In case an error occurs, contact is open.
Alarm output contact is open when converter power is off.
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6 F 8 A 0 9 2 8
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. Set the range type to “unidirectional flow, multiple ranges selected by
external signal”.
2. Set Range 1 and Range 2 respectively.
DO setting (Note 1)
・Set digital output 1 and 2 (DO1, DO2) function to multiple range high limit
alarm output and multiple range low limit alarm output respectively in
accordance with 8.2.18 Digital I/O.
Also set the alarm output state to either of normally open or normally close.
DI setting
・Set digital input (DI) function to RANGE SW in accordance with 8.2.19
Digital I/O.
High/Low limit
alarm value setting
・Set high limit alarm and low limit alarm to ON and set alarm value to high
and low alarms respectively in accordancewith 8.2.23 Flow Rate High, Low,
High-High and Low-Low limit Alarm Setting.
Set the alarm not to use to OFF.
High High/Low Low limit
alarm value setting
・Set high-high alarm and low-low alarm to ON and set alarm value to them
respectively in accordance with 8.2.23 Flow Rate High, Low, High-High
and Low-Low limit Alarm Setting.
Set the alarm not to use to OFF.
(Note 1) When setting DO using HHT AF900 (Ver2.40 or older), set alarm outputs
as below:
Multiple range high limit alarm output
SPECIAL-B,
Multiple range low limit alarm output
SPECIAL-A
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6 F 8 A 0 9 2 8
Multiple range high/low limit alarm output
Flow rate
High limit
Low limit
High-high limit
Low-low limit
Time
Multiple range
DO1 High limit alarm output
DO2
Multiple range
Low limit alarm output
DI range select signal
Alarm output ON
Alarm output ON
Alarm output ON
Alarm output ON
Alarm output ON
Large range (Range 1)
Small range (Range 2)
Note 1: Range changes to Small range when range select signal is H level, and to Large range in L
level.
Note 2: High-high/low-low limit alarm is activated when Small range is selected. High/low limit
alarm is not output to display.
High/low limit alarm is activated when Large range is selected. High-high/low-low
limit alarm is not output to display.
Note 3: Alarm output state is the same state to which digital output 1 or 2 is set. When converter
power is OFF, contact output is OPEN.
Note 4: Each alarm set value % is the percent set to the first range.
Note 5: Hysteresis of each alarm is 2.5 % for the first range.
Example
When Large range and Small range are set as below:
Large range (Range 1):
1000 m3/h
Small range (Range 2):
500 m3/h
And you want to set alarm values as below:
Large range alarm set values
High limit value:
800 m3/h
Low limit value:
600 m3/h
Small range alarm set values
High-high limit value: 400 m3/h
Low-low limit value: 300 m3/h
Set the alarm set values as below:
High limit value:
80 % (800 m3/h÷1000 m3/h=0.8)
Low limit value:
60 % (600 m3/h÷1000 m3/h=0.6)
High-high limit value: 40 % (400 m3/h÷1000 m3/h=0.4)
Low-low limit value: 30 % (300 m3/h÷1000 m3/h=0.3)
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See Note4.
See Note4
6 F 8 A 0 9 2 8
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”. Set the conversion coefficient from m3/min unit to the custom
coefficient. In the case of dL/min, set 10000 that is the conversion coefficient
of dL from m3.
Custom unit setting
・Set the custom unit in accordance with 8.2.8 “Custom Unit Setting”. Set the
character string of unit to the custom unit. In the case of this example, set ‘d’
‘L’ ‘/’ ‘m’ ‘i’ ‘n’. The rest of 1 character is blank space because the maximum
character number of the custom unit is 7.
Display setting
・Set the display item to CUSTOM in accordance with 8.2.6 “Display Setting”.
Measurement value
confirmation
・Return to the measurement mode and confirm the display value. Identification
character “*” showing the custom unit is displayed at the head of custom unit
in the measurement mode .
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(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”. Set the conversion coefficient from m3/min unit to the custom
coefficient. In the case of dL/min, set 10000 that is the conversion coefficient
of dL from m3.
Custom unit setting
・Set the custom unit in accordance with 8.2.8 “Custom Unit Setting”. Set the
character string of unit to the custom unit. In the case of this example, set ‘d’
‘L’ ‘/’ ‘m’ ‘i’ ‘n’. The rest of 1 character is blank space because the maximum
character number of the custom unit is 7.
Span setting
・Select the custom unit dL/min to the span unit in accordance with 8.2.9 “Span
(Range)”. When custom unit is selected, the new span value will be displayed
automatically based on the custom coefficient and custom unit.
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6 F 8 A 0 9 2 8
Note1 : Even if the custom unit is selected, the current output does not change unless the
span value is changed.
R1
Display example
Description
In the case of span value = 2.00000 m3/min
2.00000
m3/min
R1
20000.0
*dL/min
R1
10000.0
*dL/min
When custom unit dL/min is selected, the span value is
displayed 20000 automatically based on the custom
coefficient.
Identification character “*” showing the custom unit is
displayed at the head of custom unit.
Even if setting is fixed in this state, the current output
does not change.
When the span value was changed after the custom
unit selection, the current output changes.
The span value is changed into 10000 from 20000 in
display example. The percent value doubles when
setting is fixed in this state, and the current output
changes.
Note2 : Setting range of the span value depends on the custom coefficient.
If the setting high limit of the span value is 1.18 m3/min,
the setting high limit is 11800 dL/min by the custom unit.
Note3 : In the case of the multiple ranges, the custom unit is applied to Range4 from Range2.
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6 F 8 A 0 9 2 8
11. Communications Function
The LF62* Series Electromagnetic Flowmeter uses the HART*1 protocol to transmit digital signals
over the 4-20mA output line. The AF900 hand-held terminal is used to communicate with the LF62*
using the HART protocol. Through remote operation, you can check or change the various parameters,
calibrate the flowmeter or monitor the measurement value.
For detailed operation and specifications of HHT, refer to the instruction manual of the AF900
hand-held terminal for sensor with communication function.
*1 HART protocol:
HART, Highway Addressable Remote Transducer, is a communication protocol for industrial
sensors recommended by HCF (HART Communication Foundation).
By adding an optional PROFIBUS or Modbus communication board to the converter, the converter can
be used as a PROFIBUS-PA or Modbus slave device to communicate digital data with PROFIBUS or
Modbus master device .
For details of PROFIBUS or Modbus communication, refer to the instruction manual of PROFIBUS or
Modbus Communication for LF62*.
11.1 Connections with HHT Terminal
Connect the input cable of HHT terminal across the load resistance connected from the current output
terminals (+ and −). Since the cable end is a pair of clips, use a junction terminal or terminal block to
connect with the load resistance. To connect the HHT directly to the flowmeter, use the terminals + and
−. The HHT input cable has no polarity.
See Figures 11.2 and 11.2 for connection examples.
4 to 20mAdc
(communication line) →
Load resistance
Terminal block or
junction terminal
HHT
Figure 11.1 Connections to the Current Output Line
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6 F 8 A 0 9 2 8
Converter terminal block
L1(+)
FG
L2(-)
GND
AO(+)
AO(-)
DO2
DI
DO1
COM
X
Y
G
E
A
B
HHT connection cable and clips
HHT
Figure 11.2
Connections to the Converter Unit
11.2 Procedure for Communications with HHT
This section describes the HHT basic operation procedure for communications between the flowmeter
and HHT. For details, refer to the HHT instruction manual.
* The following procedure makes a commercially available PDA (OS: Windows Mobile) serve as a
HHT.
Procedure
Operation
Install the AF900 application software to a commercially available PDA (OS:
①Prepare a hand-held terminal (1)
Windows Mobile) main unit. Then insert the serial interface card supplied with
AF900 to the card slot of the PDA.
②Prepare a hand-held terminal (2)
Connect the HART interface cable and serial interface card supplied with
AF900 to each other.
③Connect
Connect the alligator clip at the head of the HART interface cable to the current
output line of the converter via a load resistor.
④Start
Turn on the power supply of the PDA to start the AF900 application software.
⑤Preliminary communication
Execute [sensor communication]. The model of the connected sensor product
is automatically identified and the converter menu screen appears.
⑥Check/change data
Press the relevant parameter button and check/change data.
⑥Exit the communication
When all operations are complete, press the [Exist Application] in the top
screen to turn off the power supply of the PDA.
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6 F 8 A 0 9 2 8
11.3 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. 2 km when CVV-S 1.25 mm2 cable is used
under standard installation conditions.)
● Connection method
Use a shielded cable (such as CVV-S) for wiring.
● Interference on 4-20mA current signal
To communicate with the flowmeter, a digital signal with amplitude of 0.4 to 0.8 V (in the
case of 500Ω load resistance) with frequency of 1.2 to 2.2 kHz is superimposed on the
4-20mA current signal. If a high-response receiving instrument is connected to the current
output line, the superimposed communications signal may interfere with the instrument. To
prevent this interference, as shown in Figure 11.3, it is recommended that you put a low-pass
filter with a time constant of about 100 ms into the input circuit of the receiving instrument.
Current output line
+
R
Load resistance
C
-
Converter
Filter
Receiving instrument
Figure 11.3 Example of Filter Connection
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6 F 8 A 0 9 2 8
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
hand-held terminal (HHT) through communications.
The diagnosis messages and their corrective actions are described below.
●Setting error
If you try to set a value or a measuring unit outside of the specified range in the setting mode,
one of the following error messages appears to prevent erroneous setting.
LCD display
HIGH OVER
SPEC
LOW OVER
SPEC
HIGH OVER
CNT RATE
LOW OVER
CNT RATE
MULTI RNG
ERROR
Description
Corrective action
Setting value exceeds the allowable high limit.
Setting value goes below the allowable low limit.
Try to set a value within the
specified range.
Count rate exceeds the allowable high limit.
Count rate goes below the allowable low limit.
Span is not appropriate for multi-range configuration.
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Try to set the span as specified.
6 F 8 A 0 9 2 8
● 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. See 8.2, “Check/Change of Parameters.”
LCD display
Description
Corrective action
HIGH ALARM
If high alarm is set, the flow rate reading has
Take necessary actions for the
exceeded the set value.
system.
HIGH HIGH
ALARM
If high-high alarm is set, the flow rate reading
LOW ALARM
If low alarm is set, the flow rate reading is
LOW LOW
ALARM
EMPTY
ALARM
OVER 125%
If low-low alarm is set, the flow rate reading is
has exceeded the set value.
below the set value.
below the set value.
Indicates that the detector pipe is empty.
Fill the pipe with fluid.
The measured value is over 125%.
The setting range for the
The measure value is below −125%.
measurement value is too
narrow or the volume of fluid is
too large. Check whether the
UNDER -125%
setting is correct or if there is
any problem in the process
signal.
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6 F 8 A 0 9 2 8
● Converter diagnosis error
The converter checks the internal system when power is turned on and generates an error if
abnormality is found.
If multiple errors are found, their messages will be displayed cyclically.
Diagnosis items concerning the excitation circuit are detected using the internal ADC circuit.
Thus, if the ADC error of No.6 occurs, No. 4 excitation cable and No. 5 excitation circuit
errors cannot be detected correctly. Further, this entire diagnosis and display system is based
on the CPU in the flowmeter. Therefore, if the CPU error occurs, normal diagnosis and error
display cannot be obtained.
NO.
1
2
3
4
5
6
7
Note 1:
Note 2:
LCD display
ROM ERROR
RAM ERROR
PARAMETER
FAILURE
EXC CUR
OPEN
EXC CUR
ERROR
Description
ROM error
RAM error
System parameter error in the memory
Excitation cables are not connected.
Corrective action
Internal
components
or
printed-circuit board must be
repaired or replaced.
Contact Toshiba’s salesperson in
charge or distributor in your area.
Connect the excitation cables
correctly.
Internal
components
or
printed-circuit board must be
repaired or replaced.
Contact Toshiba’s salesperson in
ADC error
ADC ERROR
charge or distributor in your area.
Totalizer data in the memory was destroyed The error message disappears if
INVALID
due to external noise.
you clear the totalizer count.
(No message appears if data display with
TOTAL
volume unit is not used.)
No.1 to No.3 diagnosis items are executed only at the time of power-up. The flowmeter does
not start measurement if any one of these errors is detected.
An error occurred in the excitation circuit.
No.4 to No.6 diagnosis items may not be detected even if the error results in incorrect
flowmeter accuracy, due to characteristic differences in components used to detect these
errors.
Note 3: CPU error cannot be detected by the diagnosis system. If the CPU stops, the watchdog timer
resets the internal circuits and the flowmeter starts again from the initial power-un condition.
Depending on the CPU condition, the flowmeter may not indicate and output correct data.
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6 F 8 A 0 9 2 8
12.2 Output Status for Errors and Alarms
Error indication
ROM ERROR
(Note 1)
RAM ERROR
Measured value
Current output
Totalization
indication
(4-20mA)
pulse output
-
(Note 3)
Stopped
-
(Note 3)
Zero
(Note 3)
Stopped
Zero
(Note 3)
Stopped
Zero
(Note 3)
Stopped
Zero
(Note 3)
Remarks
After power-up,
no measurement starts.
Stopped
After power-up,
no measurement starts.
PARAMETER
FAILURE
―――――――
(Note 2)
EXC CUR
OPEN
EXC CUR
ERROR
ADC ERROR
INVALID
TOTAL
Still water zero adjustment
cannot be performed.
Still water zero adjustment
cannot be performed.
Stopped
Still water zero adjustment
cannot be performed.
The error message
Measured data
Measured data
Measured data
disappears if you clear
(reset) the totalizer count.
HIGH ALARM
Measured data
Measured data
Measured data
―――――――
LOW ALARM
Measured data
Measured data
Measured data
―――――――
Measured data
Measured data
Measured data
―――――――
Measured data
Measured data
Measured data
―――――――
HIGH HIGH
ALARM
LOW LOW
ALARM
Note 1: The display and output may not be correct depending on the nature of the ROM error.
Note 2: If a parameter failure relating to the current output occurs, the current output may not become
the value as specified by the setting when an alarm occurs.
Note 3: The current output value used in case an alarm occurs will be output. For setting method, see
8.2.16, “4−20mA Alarm Output Setting.”
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6 F 8 A 0 9 2 8
13. Maintenance and Troubleshooting
WARNING
„ Do not disconnect while circuit is live unless location is known to be nonhazardous.
Live part of electric circuit or a high temperature department can cause explosion.
DON’T
„ Do not modify or disassemble the enclosure.
Strength degradation and defects of enclosure can cause explosion.
DON’T
„ Do not use parts of other products.
Protective performance degradation for hazardous location can cause explosion.
DON’T
„ Do not live circuits While assembly of all components is not over.
Protective performance degradation for hazardous location can cause explosion.
DON’T
„ Install per the National Electrical Code for the US (NEC, ANSI/NFPA 70) and the
Canadian Electrical code for Canada (CEC, CAN/CSA-C22.1) and the drawing
3S8A2676,3S8A22677 (Refer to Appendix 2.).
Unsuitable conduit connections for hazardous location can cause explosion.
DO
CAUTION
„ Do not conduct wiring work when
power is applied.
DON’T
Wiring while power is
applied can cause electric
shock.
„ Do not touch the LF620F main body
when high temperature fluid is being
measured.
The fluid raises the main
body temperature and can
cause burns.
DON’T
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6 F 8 A 0 9 2 8
13.1 Maintenance
„ Calibration
The converter for electromagnetic flowmeter: LF62* has a built-in internal calibration circuit that can be used to
check the zero and span of the converter for the purpose of instrumentation maintenance, periodic
inspection or re-verification of instrument calibration parameters. See Chapter 9, “Calibration”
„ Fuse
The fuse can be taken out by unscrewing the cap of the fuse holder. Check that the fuse is not
damaged. The fuse has to be replaced periodically. The recommended replacement period is 3 years.
Type of fuse used:
Rating:
Glass tube fuse 1 piece
・1A, 250 V for 100 to 240 VAC and 110VDC power supply
・2A, 250V for 24VDC power supply
Dimensions:
Diameter 5.2 mm × 20 mm
Melting time characteristic:
・Time Lag Fuses for 100 to 240VAC or 110VDC
・Normal blow type for 24 VDC
Note: Use a fuse that complies with the Electrical Appliance and Material Safety Law.
„ Check/Replacement of the display unit
When characters displayed on the LCD display become thin or blots come out, please adjust the setting of
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.
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6 F 8 A 0 9 2 8
„ Power supply unit (also used for excitation board)
Electronic components deteriorate faster when the ambient temperature is high. The life of the power
supply unit in the converter is 9 to 10 years if the ambient temperature is 40°C, and 5 to 6 years if it
is 50° C. To extend the life of the flowmeter, we recommend you replace the power supply unit early.
Contact your nearest Toshiba representative for a flowmeter inspection or unit replacement.
„ Product disposal
The main body or parts of the converter for electromagnetic flowmeter l: LF62*F must be disposed of,
according to the rules and regulations of your local government.
Especially if you dispose of electrolytic capacitors to replace parts, have it done by an agency which
is licensed to handle industry waste materials.
„ Operative life
The operative life of this flowmeter is 10 years from the date of shipment.
The life of the flowmeter differs depending on the environmental conditions and the way it was used. To
extend the life of the flowmeter, inspect the flowmeter periodically and clean or replace components if
necessary.
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6 F 8 A 0 9 2 8
13.2 Troubleshooting
If a problem occurs while using the flowmeter, you may find the cause of the problem by a simple check.
Please follow the flowmeter before you contact a serviceperson.
13.2.1 Flow rate is not indicated.
START
Are power supplies correct
for each device?
NO
Use the correct power supply
for each device.
YES
Are power and I/O cables
installed correctly?
NO
Install the cables correctly.
Refer to Chapter 5, “Wiring.”
YES
YES
Is the fuse not burnt?
Replace the fuse with a new
one.
NO
Is the flow range correctly
set?
NO
Set correctly. Refer to
Chapter 8, “Configuration
Parameter Setting.”
YES
Is the flow direction
match with the arrow
mark on the detector?
NO
Install the detector correctly.
Refer to Chapter 4,
“Mounting Procedure.”
YES
Contact your nearest Toshiba
representative.
Note
When meter size is under 80mm (3inch),
measurement value of 'Mgl/s' unit is not
displayed because value is too small.
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6 F 8 A 0 9 2 8
13.2.2 Flow rate indication is not correct.
START
Is the flow range correctly
set?
Set correctly. Refer to
Chapter 8, “Configuration
Parameter Setting.”
NO
YES
Perform the zero adjustment.
NO
Is zero point correctly set?
Refer to 6, “Operation”
YES
Is the excitation current
value as stated on the
flow direction tag?
Set correctly. Refer to 8,
“Configuration parameter
setting”
NO
YES
Is the inside wall of detector
pipe contaminated?
YES
Clean the inside wall of the
detector pipe.
NO
Design the output circuit so that
the output load resistance is less
than 750 Ω.
NO
Is the output load resistance
as specified?
YES
Are there two load
resistors connected to the
YES
Connect the two load resistors
in series, if necessary.
output in parallel?
NO
Is accuracy calculated as follows?
(Measured flow rate)-(Actual flow rate)
Actual flow rate
NO
×100%
YES
Contact your nearest Toshiba
representative.
- 146 -
Calculate as shown on the left.
6 F 8 A 0 9 2 8
13.2.3 Flow rate indication is not stable.
START
Is power supply voltage
within the specified range?
NO
Use a power supply within the
specified range.
NO
Connect each cable securely
to the terminal board.
YES
Are cables
connected?
securely
YES
Is the flowmeter grounded
with 100 Ω or less ground
resistance?
Ground the flowmeter with a
copper braid or wire(5.5 mm²
minimum) to a good earth
ground (100Ω or less ground
resistance).
NO
YES
Is the detector pipe filled
with fluid?
NO
Design piping so that the
detector pipe is filled with
fluid all the time.
YES
Design piping so that the fluid
does not carry bubbles.
YES
Install the flowmeter away
from equipment producing
electromagnetic or
electro- static interference.
YES
Is the fluid carrying
bubbles?
NO
Is there high-voltage or large
current cable or equipment
near the flowmeter?
NO
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.
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6 F 8 A 0 9 2 8
13.2.4 When switch operation is unable
START
Does intense light shine on the
control panel such as direct sunlight
or reflected sunlight by window
glass or metal sheet?
YES
Place a cover to block the light from
surroundings, or cover the control
panel by hand to block the light.
YES
Place a cover to block the light from
surroundings, or cover the control
panel by hand to block the light.
YES
Operate the EMF converter fixing a
light to shine on the control panel as
constantly as possible.
NO
Does the brightness change
always by ON/OFF of lighting?
NO
Are you working with unfixed
lighting such as a flashlight?
NO
Does the control panel get rained?
YES
NO
Is the control panel attached with
dewdrop, snow, ice, mud or oil?
Is the control panel hazed by
steam?
YES
Place a cover on the control panel to
protect from rain, and operate the
EMF converter.
Clean the attached or haze and operate
the EMF converter.
Further, place a cover to prevent from
attaching.
NO
Are you wearing dark color gloves?
Or are your finger or gloves
stained?
YES
Clean the stain on fingers or gloves, or
wear gloves in light color and operate
the EMF converter.
NO
Is there any light reflecting object
near the control panel?
YES
Secure a space in front of the control
panel to allow a person to stand.
NO
Is there any reflecting object such
as metal plate placed opposing to
the control panel?
YES
NO
Contact your nearest Toshiba representative.
- 148 -
Operate the EMF converter blocking
the light from the reflecting object by
standing in-between the control panel
and the reflecting object.
6 F 8 A 0 9 2 8
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). When an
electrically conductive fluid flows in the pipe, an electrode voltage E is induced between a pair of
electrodes placed at right angles to the direction of magnetic field. The electrode voltage E is directly
proportional to the average fluid velocity V.
The following expression is applicable to the voltage.
E = K × B × D × V [V] ........ (Eq. 14.1)
Volumetric flow rate Q [m3/s] is:
Q=
π × D²
× V ................(Eq. 14.2)
4
E = induced electrode voltage [V]
K = constant
B = magnetic flux density [T]
D = meter pipe diameter [m]
V = fluid velocity [m/s]
Using the Equation 14.1 and 14.2
4
E=K×B×D×
×Q
π × D²
E = 4 × K × B × Q ............(Eq. 14.3)
π ×D
Therefore, volumetric flow rate is directly proportional to the induced voltage.
Square-Wave Excitation
E
D
B
Figure 14.1
Principle of Operation
The LF620F and LF622F electromagnetic flowmeter uses the square-wave excitation method, which
provides long-term stable operation. With square-wave excitation, the LF620F and LF622F offers reliable
measurement without being affected by electrostatic or electromagnetic interference, or electrochemical
polarization between the electrodes and the fluid to be measured.
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6 F 8 A 0 9 2 8
15. Specifications
15.1 Specifications
„ General Specifications
●Measuring range: (measuring range by flow rate conversion)
Small/Middle meter size (1/2’’ to 18’’)
Combined detector
Measuring range
LF414, LF434, LF494, LF654, GF63*type
0-1.0ft/s to 0-32.8ft/s (0-0.3m/s to 0-10m/s)
(A range of 0-0.3ft/s to 0-1.0ft/s (0-0.1m/s to 0-0.3m/s) can be dealt with by an option specified at order time.)
Large meter size (20’’ to 80’’)
Combined detector
Measuring range
GF63* type (20’’ to 36’’)
LF664 Type (20’’ to 80’’)
0-1.0ft/s to 0-32.8ft/s (0-0.3m/s to 0-10m/s)
●Accuracy: (Accuracy when combined with the detector)
・Combined detector: Small/Middle meter size (1/2” to 18”)
LF414, LF434, LF494, LF654, GF63* type
Accuracy: ±0.2 % of Rate*
* This pulse output error result is established under standard operating conditions at Toshiba's flow calibration facility,
Fuchu Japan. (NIST Traceable).
* Individual meter measurement error may vary up to ±0.5% of Rate at 1.64 ft/s (0.5m/s) or more and ±0.3% of rate ±0.039
inch/s (1mm/s) at 1.64 ft/s (0.5m/s) or less.
* Current output: plus ± 8µA (0.05% of span.)
* Refer to individual calibration data for each individual meter's measurement error.
・Combined detector: Large meter size (20” or 24”)
Accuracy: ±0.3 % of Rate*
GF63*, LF664 type
* This pulse output error result is established under standard operating conditions at Toshiba's flow calibration facility,
Fuchu Japan.
* Individual meter measurement error may vary up to ±0.5% of Rate at 3.28 ft/s (1.0m/s) or more and ±0.3% of Rate ±0.079
inch/s (2mm/s) at 3.28 ft/s (1.0m/s) or less.
* Current output: plus ± 8µA (0.05% of span.)
* Refer to individual calibration data for each individual meter's measurement error.
・Combined detector: Large meter size (28” to 80”)
Accuracy: ±0.5 % of Rate*
GF63*, LF664 type
* This pulse output error result is established under standard operating conditions at Toshiba's flow calibration facility,
Fuchu Japan.
* Individual meter measurement error may vary up to ±0.8% of Rate at 3.28 ft/s (1.0m/s) or more and ±0.4% of Rate
±0.157inch/s (4mm/s) at 3.28 ft/s (1.0m/s) or less.
* Current output: plus ± 8µA (0.05% of span.)
* Refer to individual calibration data for each individual meter's measurement error.
(Note)Refer to individual specification sheet’s accuracy when combined with another detector.
- 150 -
6 F 8 A 0 9 2 8
Conductivity:
3μS/cm or more (Combined detector : LF654 )
5μS/cm or more (Combined detector : LF414, LF434, LF494, LF664,
GF63* )
Ambient temperature:
- 4 to 140 °F (-20 to +60℃)
Storage temperature:
- 13 to 149°F (-25 to +65℃)
Power supply:
100 to 240Vac (allowable voltage range: 80 to 264Vac 50/60Hz)
24Vdc (allowable voltage range: 18 to 36Vdc) or
110Vdc (allowable voltage rangel:90 to 130Vdc)
Without communication function
15W (22VA) or less
When standard is used;
(10W(14VA) at 100Vac and Excitation current: 0.2A)
With communication function
17W (24VA) or less
Power consumption:
„ Input
Input signal:
・Flow rate proportional signal from the detector
・Digital input signal
Signal type:
20 to 30Vdc voltage signal
Input resistance: About 2.7kΩ
Number of input points:
1
Digital input function: Select either of the following.
・ Range switching input: Large/Small range switching of unidirectional double range,
forward/reverse direction double range
・ Counter control input: Internal totalization counter start/stop/reset control
・ Output hold input: The current output and pulse output are kept to their preset
values.
・ Zero adjustment input: Start still water zero adjustment.
„ Output
Current output:
Digital output 1:
Digital output 2:
output
4 to 20mAdc (load resistance 750Ω or less)
Output type:
Capacity:
Number of output points:
Transistor open collector
30Vdc, Max 200mA
1
Output type:
Semiconductor contact signal
Capacity:
(no polarity)
150Vdc, Max. 150mA
150Vac (peak value), Max.
Number of output points :
1
100mA
- 151 -
6 F 8 A 0 9 2 8
Digital output function: Select one of the following:
・
Totalization pulse output:
Pulse rate
Max. 10kHz(10000pps) ・・・ DO1
Max. 100Hz( 100pps) ・・・ DO2
Pulse width
Can be set within a range of 0.3 to 500ms.
However, must be 40% or less of the full-scale cycle.
If the full scale 1000pps is exceeded,
automatically set to 40% of the full-scale cycle.
・ Multi-range switching output: In the case of fourfold range or forward/reverse
double range, the digital output is used by two
points.
・ High and low alarm output
・ High-high and low-low alarm output
・ Empty alarm output
・ Preset counter output
・ Converter malfunction alarm output
・ Multiple range high and low limit alarm output
Output display: Full-dot matrix 128 x 128-dot LCD (with back light)
„ Communication signal
Method (protocol): HART or PROFIBUS (option), Modbus (option)
Load resistance:
240 to 750Ω (HART)
Load capacity:
0.25μF or less (HART)
„ Structure
IP67 and NEMA 4X
„ Housing
Aluminum alloy
„ Coating
Acrylic resin-baked coating, metallic-gray colored
„ Cable connection port
1/2-14NPT thread
Cable connections not provided.
„ Surge arresters
Surge arresters are installed in the power supply and current signal output circuit.
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6 F 8 A 0 9 2 8
15.2 Model Number Table
Model number
1 2 3 4 5
Specification code
6
7
8
9
10 11 12 13
L F 6 2
Contents
14
0
Electromagnetic flowmeter converter
Combined type
2
Separate type
Purpose
cFMus classⅠ, Division 2 approved
Shape
Standard type
Converter mounting fitting
None
Panel, Accessory for wall mounting
(Bolts and Nuts material: SUS304)
Accessory for pipe installation
(Bolts and Nuts material: SUS304)
F
A
A
C
E
2
1
2
3
1
2
3
E
Digital input / output
Digital output points 2(DO1+DO2)+Digital input point 1(DI)
Current output and Communication function
Current output + HART communication
PROFIBUS communication (Current output is not usable)
Current output + Modbus communication
(DO1,DO2,DI is not usable)
Power supply
100Vac - 240Vac, 50/60Hz
24Vdc
110Vdc
Instruction manual
English
○: Selectable -: Unselectable
LF620F type
LF622F type
Converter Model Number Table
○-
-○
○○
○-
○○
-○
-○
○○
○○
○○
○○
○○
○○
○○
○○
Note: When PROFIBUS communication is provided, current output (4−20mA) and HART communication
cannot be used.
When Modbus communication is provided, digital output points 1(DO1) and digital output points
2(DO2), digital input point 1(DI), HART communication cannot be used.
- 153 -
6 F 8 A 0 9 2 8
16. Outline Drawing
16.1 LF620F Type
Weight : Approx. 5 lb
)
6
7
1
(
3
9
.
6
unit: inch (mm)
)
5
7
(
5
9
.
2
)
0
2
1
(
3
7
.
4
Detector dimensions:
Check the dimensions of the detector
with the instruction manual of the
combined detector.
Figure 16.1
Outline of LF620F Type
- 154 -
)
3
2
1
(
4
8
.
4
6 F 8 A 0 9 2 8
16.2 LF622F Type
Weight : Approx. 7 lb (including the installation plate).
unit: inch (mm)
Panel or wall mounting dimensions
Figure 16.2
Outline of LF622F Type
- 155 -
6 F 8 A 0 9 2 8
Appendix1
Factory default standard value table
Parameter names
Excitation frequency
Flow direction
Display 1
Display 2
Display digit setting
(for Display 1 and Display 2)
Custom coefficient
Custom unit
Range type
Range 1
Ranges 2 to 4
Hysteresis
Damping constant
Rate-of-change limit
Control limit time
Low cutoff
Display low cutoff
Manual zero
4−20mADC alarm output
Output low limit setting
Digital output 1
Digital output 2
DO1/DO2 active status
Digital input
DI detective level
Count rate
Pulse width setting mode
Pulse width
Preset count
Preset function
High alarm On/Off
High alarm value
Low alarm On/Off
Low alarm value
High-High alarm On/Off
High-High alarm value
Low-Low alarm On/Off
Low-Low alarm value
Empty pipe alarm
Self-diagnosis On/Off
Converter alarm
Fixed value output
Fixed value current
Fixed value pulse
Password
LCD density adjustment
Switch position setting
Detector type
Default value(SI unit)
Value(*1)
NORMAL
m3/h
m3
1/1000
Default value(English unit)
Value(*1)
NORMAL
gal/min
COUNT B
1/1000
1.0
“ CUSTOM”
(Head of character string
is blank )
SINGLE
Value(*1)
0.00 m3/h
3.0 %
1.0s
0.0 %
0.0 s
1.0 %
LINEAR
0.0 %
4mA
4mA
PLS OUT
NO USE
NormOPEN
NO USE
H LEVEL
Value(*1)
AUTO
100 ms
00000000
HOLD
OFF
0.0 %
OFF
0.0 %
OFF
0.0 %
OFF
0.0 %
NORMAL
ON
CONV ONLY
OFF
4mA
0 pps
000
3
BOTTOM
EXC CAL
1.0
“ CUSTOM”
(Head of character string
is blank )
SINGLE
Value(*1)
0.00 gal/min
3.0 %
5.0s
0.0 %
0.0 s
1.0 %
LINEAR
0.0 %
4mA
4mA
PLS OUT
EMPTY ALM
NormOPEN
NO USE
H LEVEL
Value(*1)
AUTO
5 ms
00000000
HOLD
OFF
0.0 %
OFF
0.0 %
OFF
0.0 %
OFF
0.0 %
NORMAL
ON
CONV ONLY
OFF
4mA
0 pps
000
3
BOTTOM
EXC CAL
*1 : Setting value by meter size please refer to the next list.
- 156 -
Changed value
6 F 8 A 0 9 2 8
When parameter value was appointed in order, parameter value may be different from list.
Setting value in each size
Ex.
Range 1 (SI unit)
Meter Size
Freq
(mm)
(m3/h)
(m/s)
(Hz)
15
24
2
3.144
25
24
6
3.395
32
24
10
3.454
40
24
15
3.316
50
24
25
3.537
65
24
40
3.348
80
24
60
3.316
100
24
100
3.537
125
24
150
3.395
150
24
200
3.144
200
24
300
2.653
250
12
600
3.395
300
12
900
3.537
350
12
1200
3.465
400
12
1600
3.537
450
12
2000
3.493
500
6
3000
4.244
600
6
4000
3.930
700
6
5000
3.609
750
6
6000
3.773
800
6
7000
3.868
900
6
9000
3.930
Range 1 (English unit)
Count rate
(gal/min)
(ft/s)
(SI unit)
(English unit)
25
75
125
175
300
475
650
1000
1750
2500
4500
7000
10000
12000
16000
20000
25000
40000
50000
60000
70000
80000
29.283
31.625
32.171
28.826
31.625
29.629
26.766
26.354
31.625
29.283
29.649
29.517
28.283
25.817
26.354
26.029
26.354
29.283
26.892
28.112
28.825
26.029
0.01m3
0.01 m3
0.01 m3
0.01 m3
0.1 m3
0.1 m3
0.1 m3
0.1 m3
0.1 m3
1 m3
1 m3
1 m3
1 m3
1 m3
1 m3
1 m3
1 m3
1 m3
1 m3
1 m3
1 m3
1 m3
1gal
1gal
1gal
1gal
10gal
10gal
10gal
10gal
10gal
100gal
100gal
100gal
100gal
100gal
100gal
100gal
100gal
100gal
100gal
100gal
100gal
100gal
- 157 -
6 F 8 A 0 9 2 8
Appendix2
2-1 A system block diagram for LF620F
- 158 -
6 F 8 A 0 9 2 8
2-2 A system block diagram for LF622F
- 159 -
6 F 8 A 0 9 2 8
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.
- 160 -
FCF50017
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