Toshiba LF620F User manual

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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:
Separate type converter 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
LF620F
LF62
2
F
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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.
DON’T
Live part of electric circuit or a high temperature department can cause explosion.
Do not modify or disassemble the enclosure.
DON’TStrength degradation and defects of enclosure can cause explosion.
Do not use parts of other products.
DON’TProtective performance degradation for hazardous location can cause explosion.
Do not touch circuits until assembly of all components is over.
DON’TProtective performance degradation for hazardous location can cause explosion.
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.).
DO Unsuitable conduit connections for hazardous location can cause explosion.
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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.
Use an appropriate device to carry and install the
LF620F and LF622F.
DO
Power supply from mains
power can cause electric
shock or circuit
break-down.
DO
If this product falls to the ground,
injury, or malfunction of or damage to
the product, can be caused.
Use crimped terminal lugs for the terminal
board and GND terminal.
Do not modify or disassemble the LF620F and
LF622F unnecessarily.
DO
Loose connections can
cause electric shock, fire
from excessive current or
system malfunction.
DON’T
Modifying or disassembling this
product can cause
electric shock,
malfunction of or damage to this
product.
Turn off mains power before conducting
wiring work.
Ground the LF620F and LF622F independently
from power equipment. (100 ohm or less
ground resistance)
DO
Wiring while power is
applied can cause electric
shock.
DO
Operating this product
without grounding can cause
electric shock or malfunction.
Turn off mains power before working on
pipes.
■Do not work on piping and wiring with wet hands.
DO
Working on pipes while
power is applied can
cause electric shock.
DON’T
Wet hands may result in electric
shock.
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.
Do not conduct wiring work when power is
applied.
DON’T
The fluid raises the main
body temperature and can
cause burns when touched.
DON’T
Wiring while power is applied can
cause electric shock.
Do not conduct wiring work with wet
hands.
DON’T
Wet hands may result in
electric shock.
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.
Do not use a fuse other than the one
specified.
DON’T
Using a fuse other than the
one specified can cause
system failure, damage or
malfunction.
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 100Ωor 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 Remote Selection of Fixed Value Output.....................................................................................................128
10.8 Converter Failure Alarm ..............................................................................................................................129
10.9 Multiple range high/low limit alarm function.................................................................................................130
10.10 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
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
For a converter unit only
Electromagnetic flowmeter converter--------------------------------------------- One unit
Instruction manual -------------------------------------------------- One for the converter
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.
LF620F
LF62
2
F
LF62
2
F
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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 astable 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
3.1 Appearance
3.1.1 Appearance of LF620F Type
Figure 3.1.1 Appearance of LF620F
Controlkey
(Controlpanel)
Converter
Arrow nameplate
Display section
Converter case
Detector
Ground terminal
Converter installation screw
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.
LF620F
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3.1.2 Appearance of LF622F Type
Figure 3.1.2 Appearance of LF622F
Converter case
Converter installation screw
Controlkey
(Controlpanel)
Display section
for flow rate signal cable
for signal cable
for
p
ower cable
for signal cable
for excitation cable
Ground terminal
LF62
2
F
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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
The label shown left is placed near the terminal board
for power supply to this equipment.
Be alert to electric shock.
FG GND AO(-) DI COM Y E B
L1(+) L2(-) AO(+) DO2 DO1 X G A
Internal grounding terminal
Power supply terminal
Current output terminal or
PROFIBUS* terminal
*:Option
Digital input terminal or
Modbus*terminal
*:Option
Digital output terminal or
Modbus*terminal
*:Option
Digital I/O common or
Modbus*terminal
*:Option
Detector connection
terminal
External grounding terminal
Figure 3.2.1 Terminal Block Construction of LF620F and LF622F
LF620F
LF62
2
F
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4. Installation
Safety Precautions for Installation
WARNING
Do not activate live circuits under environment of explosive atmospheres.
DON’T Live part of electric circuit or a high temperature department can cause explosion.
Do not use parts of other products.
DON’T Protective performance degradation for hazardous location can cause explosion.
Do not activate circuits While assembly of all components is not over.
DON’T Protective performance degradation for hazardous location can cause explosion.
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.).
DO Unsuitable conduit connections for hazardous location can cause explosion.
CAUTION
Turn off mains power before working
on pipes
Use an appropriate device to carry and install
the LF620F and LF622F.
DO
Working on pipes while
power is applied can cause
electric shock.
DO
If his product falls to the ground,
injury, or
malfunction of or damage to the
product, can be caused.
Do not modify or disassemble the
LF620F and LF622F unnecessarily.
Ground the LF620F and LF622F
independently from power equipment. (100
ohm or less ground resistance)
DON’T
Modifying or
disassembling this product
can cause electric shock,
malfunction or damage to
this product.
DO
Operating this product without
grounding can cause electric shock
or malfunction.
Do not work on piping and wiring
with wet hands.
DON’T
Wet hands may result in
electric shock
The label shown left is placed near
the terminal board for power supply
to this equipment.
Be alert to electric shock.
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4.1 Notes on Selecting the Installation Location
Do not store or install the flowmeter in :
1. 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).
2. Where there is direct sunlight.
3. Where excessive vibration or mechanical shock occurs.
4. Where high temperature or high humidity conditions obtain.
5. Where corrosive atmospheres exist.
6. That can be submerged under water.
7. 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.
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.
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%
・Pollutiondegree2 ・Structure:IP67 and NEMA 4X
LF62
2
F
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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.
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.
Figure 4.1 shows examples of installation to a panel and wall. Figure 4.2 shows an example of installation
to a pipe stand.
LF620F
LF62
2
F
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Figure 4.1 Examples of Installation to Panel and Wall
Unit : inch (mm)
Panel or wall mountin
g
dimensions
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