PT6E-0281

Optical Interferometric Gas Monitor

FI-915
Operating ManualPreface
Thank you for choosing our optical interferometric gas concentration reading adjustment meter FI-915.
This manual describes how to use FI-915. Not only the first-time users but also the users who havealready used FI-915 must read and understand the operating manual before using FI-915.
Throughout this manual, the following indications are used to ensure safe and effective work.

DANGER

This message indicates that improper handling may cause serious damage on
life, health or assets.

WARNING

This message indicates that improper handling may cause serious damage on
health or assets.

CAUTION

This message indicates that improper handling may cause minor damage on
health or assets.

NOTE

This message indicates advice on handling.

SDHC Logo is a trademark of SD-3C LLC.

Use one of the following SD cards:
SD standard:File system:

SDSC, SDHC
FAT16, FAT32-2-

Contents
1 Important Notices on Safety ............................................................................................................................ 5
1-1. Danger Cases ...................................................................................................................................... 5
1-2. Warning Cases .................................................................................................................................... 5
1-3. Precautions .......................................................................................................................................... 6
2 Product Components ....................................................................................................................................... 7
2-1. Intended Use and Features of Product ................................................................................................ 7
2-2. Product Outline Drawing ...................................................................................................................... 8
2-3. Accessories .......................................................................................................................................... 9
2-3-1. Standard Accessories..................................................................................................................... 9
2-3-2. Optional Accessories ..................................................................................................................... 9
2-3-3. Maintenance Parts .......................................................................................................................... 9
2-4. Names and Functions for Front Panel ............................................................................................... 10
2-5. Block diagram .................................................................................................................................... 11
3 How to Install ................................................................................................................................................. 12
3-1. Precautions on Installation Site ......................................................................................................... 12
3-2. How to Install Product and Precautions ............................................................................................. 13
3-3. How to Connect Wire ......................................................................................................................... 15
3-3-1. Descriptions of External Terminal Plate And How to Connect Wire ........................................ 15
3-3-2. Precautions on Electrical Work ................................................................................................... 16
3-3-3. Protective grounding .................................................................................................................... 17
3-4. How to Tube ....................................................................................................................................... 18
4 How to Operate in Measuring Mode .............................................................................................................. 20
4-1. How to Start Measurement from Power-on Display........................................................................... 20
4-2. LCD Screen during Measurement and How to Perform Flow Adjustment ........................................ 21
4-3. How to Perform Reference Calibration .............................................................................................. 22
4-4. How to End Measurement (Power-off) .............................................................................................. 23
4-5. Change to Another Mode ................................................................................................................... 24
4-6. Self-diagnostic Monitoring Function .................................................................................................. 25
5 How to Operate in Check Mode .................................................................................................................... 26
5-1. Check Mode Menu Items ................................................................................................................... 27
5-2. Each Item and Details ........................................................................................................................ 28
6 How to Operate in Setup Mode ..................................................................................................................... 37
6-1. Items in Setup Mode .......................................................................................................................... 38
6-2. Each Item And Details ....................................................................................................................... 39
7 Maintenance .................................................................................................................................................. 56
7-1. Maintenance Intervals and Items ....................................................................................................... 56
7-2. Daily Maintenance ............................................................................................................................. 56
7-3. Regular Maintenance for Every 6 Months ......................................................................................... 57
7-4. Recommended Regular Replacement Parts ..................................................................................... 57
7-5. How to Replace Pump ....................................................................................................................... 58
7-6. How to Replace Fuse ........................................................................................................................ 59
8 Storage, Relocation and Disposal ................................................................................................................. 60
8-1. Procedures to Store FI-915 or Leave It for a Long Time ................................................................... 60
8-2. Disposal of Products .......................................................................................................................... 61
9 Troubleshooting ............................................................................................................................................. 62
9-1. FAILURE ............................................................................................................................................ 62
9-2. OUT OF SPECIFICATION ................................................................................................................. 66
9-3. MAINTENANCE REQUIRED............................................................................................................. 68
9-4. FUNCTION CHECK ........................................................................................................................... 69
10 Product Specifications ................................................................................................................................. 70
10-1. Standard Specifications ................................................................................................................... 70
10-2. Detection principle ........................................................................................................................... 72-3-

11 Definition of Terms ....................................................................................................................................... 73-4-

1 Important Notices on Safety

1-1. Danger Cases

1

Important Notices on
Safety1-1. Danger Cases
DANGER FI-915 is not explosion-proof. Do not install or use FI-915 in a location designated as ahazardous area (explosion-proof area).
 Use the rated power supply specified for FI-915.
on the external terminal plate before use to avoid a risk of Ground the EARTH terminal
electric shock. Perform the grounding work while FI-915 is not powered.

1-2. Warning Cases
WARNING
Sampling point pressure FI-915 is designed to draw gases under the atmospheric pressure. If excessive pressure isapplied to the gas inlet (GAS IN) and outlet (GAS OUT) of FI-915, measured gases may leak out
from its inside and may cause dangerous conditions. Be sure that excessive pressure is notapplied to FI-915 while used.
 Do not connect the gas sampling hose directly to a location with a pressure higher than theatmospheric pressure. The internal piping system may be damaged.
Reference calibration in the atmosphere When the reference calibration is performed in the atmosphere, check the atmosphere forfreshness before beginning the calibration. When the calibration is performed in the atmospherein which interference gases (gases that are neither the measured gas nor the base gas) exist,
correct measurement, monitoring and control cannot be performed causing a danger.
Others Do not draw a high-concentration gas beyond the measuring range. Accurate readings cannot
be obtained.

-5-

1 Important Notices on Safety

1-3. Precautions

1-3. Precautions
CAUTION A low-volatile solvent that condenses (liquefies) within FI-915 or within a tube connected to
FI-915 cannot be measured.
 A solvent gas with high humidity that causes condensation within FI-915 or within a tube
connected to FI-915 cannot be measured.
 Do not use FI-915 near a device that significantly disturbs the waveform of power supply suchas electric welder. Also, do not use a power supply of the same system as a device thatsignificantly disturbs the waveform of power supply.
 Carefully manage the temperature around FI-915 to prevent a measuring solvent fromcondensing (liquefying) within FI-915 or tube connected to FI-915.

-6-

2 Product Components

2-1. Intended Use and Features of Product2

Product Components
2-1. Intended Use and Features of ProductFI-915 is designed to perform continuous measurement, monitoring and control of the concentration ofsolvent vapor generated from drying equipment such as photogravure printing machine.
The optical interferometric system has been adopted as a principle for concentration measurement toprovide highly accurate, stable measurements. In addition, it has a reference calibration function that
automatically performs sensor output adjustment using a reference gas (for FI-915, a zero gas such as
fresh air) as a reference for concentration measurement, allowing more stable operations.

-7-

2 Product Components

2-3. Accessories

2-3. Accessories
2-3-1. Standard Accessories･ Main unit operating manual･ MC (ST) filter (GAS IN dust filter)･ Cylindrical filter CF-8369 (REF IN dust filter)

2-3-2. Optional Accessories
SD card (2 GB)
Fuse

2-3-3. Maintenance Parts･ Replacement interferometer Unit
･ Replacement pump (RP-60)･ Fuse (250 V 2 A, Φ5.2 x 20 mm, time-lag type)-9-

2 Product Components

2-5. Block diagram

2-5. Block diagram
Absolutepressure sensor

Activated Carbon filter
Solenoid
valve

Pulsation prevention buffer

Needlevalve
Flow sensor- 11 -Pump

3 How to Install

3-1. Precautions on Installation Site

3

How to Install
3-1. Precautions on Installation Site
Do not install FI-915 in any of the following locations.

(1) Place where FI-915 is exposed to water, oil,chemicals, etc.

(2)

Place with vibrations(3) Place where radio wave or noise isgenerated(4)

Place where FI-915 may drop or receive
strong shock(5) Place exceeding the operating temperature
range
Place where FI-915 is exposed to direct
sunlight or radiant heat(6)

Place where maintenance of FI-915 cannot
be performed
Place where handling of FI-915 involves
dangers- 12 -

3 How to Install

3-2. How to Install Product and Precautions

CAUTION Do not drop or give strong shock to FI-915 during installation. Otherwise, the device may bedamaged.
 If FI-915 is to be fixed on a rack, etc., install it properly on a rack that can hold its weight.
 When performing construction work, prevent dust, etc., from entering the inside of FI-915.
 When installing FI-915 on a freestanding rack (fixed type), fix the rack with anchor bolts.
 Leave a space of at least 600 mm between the front/back side of FI-915 and wall to securemaintenance space.
 When installing FI-915 in an enclosed storage board, take a measure to prevent thetemperature inside the storage board from rising over 50°C.
 When installing FI-915 on a storage board panel, leave sufficient length of wires and tubes sothat maintenance can be performed with the unit pulled out by at least half the length of its
depth without removing wires and tubes at the back.

- 14 -

3 How to Install

3-3. How to Connect Wire

3-3. How to Connect Wire
3-3-1. Descriptions of External Terminal Plate And How toConnect Wire
<Details of the terminal plate>

(1)

(11)

(2)

100 - 240 VAC ± 10%50/60 Hz

(12)

(3)

Grounding (EARTH) D type ground

(13)

(4)

REF IN *Reference calibration button for
remote operation(When they are short-circuited, thereference calibration function is
activated)(14)

REF IN *(15)

Alarm contact output 1 (non-voltage contact)
Contact capacity: 1 A 240 VAC/1 A 30 VDC(resistance load)
1 A 240 VAC/1 A 30 VDC (resistance load)

(5)
(6)
(7)
(8)

(17)

This is not used.

(9)
(10)

(16)

(18)
(19)

Output signal 4 - 20 mA(20)This is not used.

Alarm contact output 2 (non-voltage contact)
Contact capacity: 1 A 240 VAC/1 A 30 VDC(resistance load)
1 A 240 VAC/1 A 30 VDC (resistance load)
Fault alarm contact output (non-voltage contact)
Contact capacity: 1 A 240 VAC/1 A 30 VDC(resistance load)※ When (4) and (14) are short-circuited, the REF gas is drawn.
The terminal screw of the terminal plate is a screw with a square washer (M3.5 x 8). Use the cable of 1.25mm2 to attach a crimped terminal with insulating coating for M3.5 to the tip of it for wiring.
 Power supply/contact cables: Cables equivalent to CVV 1.25 mm2
 Other signal cables: Cables equivalent to CVVS 1.25 mm2- 15 -

3 How to Install

3-3. How to Connect WireNOTE If you are connecting a recording meter or an external meter to the output (dc4-20ma), be sure to set
the isolator immediately after the terminal to prevent the noise from being induced by the connectedcable.

<Details of the RS-485 communication terminal>

RS-485 *Used when the RS-485 communication function is used.
<RS-485 communication terminal cable connection conditions>
Cable:
0.2 - 2.5 mm2
Bare wire length:
Approx. 7 mm
Screw tightening torque: 0.5 - 0.6 Nm
Applicable screwdriver: Flathead screwdriver (width 3 mm or less)Compatible bar terminal: For a bar terminal, the following items are available.
 Bar terminal: Model AI series (manufactured by Phoenix Contact) Crimping tool: Model CRIMPFOX UD 6 (manufactured by Phoenix Contact)

3-3-2. Precautions on Electrical WorkThe noise induced by an unstable power supply or cable may cause malfunctions, false alarms or failures.
1. Use a stable power supply for the system.
(1) FI-915 must be provided with the following power supply.
Power voltage:
100 - 240 VAC ±10%
Allowed time of momentary blackout: Approx. 50 msec or less(A restart may be required to recover from the momentary
blackout for 50 msec or more.)
To ensure continuous operation and activation, install a UPS outside FI-915.
(2) Do not make the power supply line in parallel with another high-voltage/high-current line.

- 16 -

3 How to Install

3-3. How to Connect Wire

2. Take a measure against noise according to the installation environment.
(1) Measure against lightning surge"Lightning" is a problem for the devices installed outdoors at plants, etc. Because lightning acts as alarge emission source while cables act as a receiving antenna, devices connected to the cables
may be damaged. Cables installed in a metal conduit or under the ground cannot be completely
protected from inductive lightning surge caused by lightning. However, the following measure canbe taken. Take an appropriate measure before using FI-915.
<Provide protection by a lightning arrester (cable arrester)>
Although inductive lightning surge can be transmitted through the cable, it is prevented by installinga lightning arrester before the field devices and central processing equipment. Insert lightning
arresters to the points where the cables enter the building from outside. A lightning arrester has acircuit that removes a surge voltage to prevent field devices from being damaged.
(2) Measure against power line noise
The following measures can be taken to mitigate the influence of electromagnetic or electrostaticinduction noise from the power line. Take an appropriate measure before using FI-915.
<Keep away from power line>
Keep enough distance between the signal and power lines, avoiding parallel layout if possible. Ifthey need to intersect with each other, it should be done at a right angle.
<Install an electrostatic shield>
Use a shielded signal line and ground the shield. Also, take measures to make the electricalisolation such as using an iron raceway for the power line, installing a grounded metal partition
plate between the lines and putting each line in an individual metal duct.
In addition to lightning, there are more sources of surge noise. To protect devices from these noise
sources, the devices must be grounded.

CAUTION Be careful not to damage the internal electronic circuit when wiring.

CAUTION The "b" contact (break contact) under de-energized state may be opened momentarily by aphysical shock, such as external force.
 When the "b" contact is selected for the alarm contact, take appropriate actions to prepare for a
momentary activation, for example, add signal delay operation (approximately one second) tothe receiving side of the "b" contact.

3-3-3. Protective grounding
For stable operation of FI-915 and safety, it must be connected to a grounding terminal. The grounding
wire should be thick and short as much as possible to minimize grounding resistance. Use the EARTH
terminal (terminal 3) of the external terminal plate to ground FI-915.

WARNING The grounding must be made as D type grounding (below 100 Ω of grounding resistance).
 Do not connect the grounding wire to a gas tube.

- 17 -

3 How to Install

3-4. How to Tube

(7) As a general rule, exhaust should be atmosphere release. When the tip is outside, bend the shape ofthe tube into an inverted U to prevent rain from entering the tube. When it returns to the exhaust duct
etc., keep the state within the atmosphere pressure of ±3 kPa, and the state that pressure fluctuation
is not rapidly changed.
(8) For safety, to provide a flame arrestor for line, install it into each line of the GAS IN and GAS OUT.

CAUTION FI-915 requires appropriate tubing works (selection of materials and other works) depending ontypes of sample gas and installation conditions. For questions about tubing works, pleasecontact the distributor.

- 19 -

5 How to Operate in Check Mode5

How to Operate in Check
Mode"Check mode" is mode to display/check operating states of the sensor, setting conditions of the product,
etc., while continuing measurement. In this mode, measurement is not stopped and the measurement
result is output to output to the 4-20mA gas concentration output signal.
To enter "check mode," press and hold the MODE button for 3 seconds or more in measuring mode todisplay the mode change screen, use the ▲▼ buttons to select "CHECK MODE," and then press theSET button to confirm. This operation displays the check mode menu screen.
To return to measuring mode from the check mode menu screen, press and hold the ESC button for 3
seconds or more.
For 3
seconds
or moreMeasuring mode

Mode change screen
Select CHECK MODE using
the ▲▼ buttons- 26 -

Menu screen

5 How to Operate in Check Mode

5-1. Check Mode Menu Items

5-1. Check Mode Menu Items
The following table shows menu items selectable in check mode. The description for each item isprovided on the subsequent pages.

Displays the state of the Displays the state of the The 4 to 20 mA signal
interferometric sensor
main controller in theto be input to the digitalin the product.
product.
reading adjustment
meter.

Displays the pressure
sensor output.

Displays thetemperature sensor
output.

Displays the operation
setting of the LCD
display/lamps for whenan abnormal state is
detected.

Displays the operation
setting of the LCD
display/lamps for whena state out ofspecification isdetected.

Displays the operation
setting of the LCD
display/lamps for whena condition requiring
maintenance is
detected.

Displays the operation
setting of the LCD
display/lamps for when
the function check is
activated.

Displays the operation
setting of the LCD
display/lamps for whena concentration alarm isdetected.

Displays the result oftheself-diagnostic/monitori
ng function.

Resets the trace display
and the self-latchingstate of the contact.

- 27 -

5 How to Operate in Check Mode

5-2. Each Item and Details

5-2. Each Item and Details
In the check mode menu screen, select an item to be checked using the ▲▼ buttons and press theSET button to display the detailed information of the item. This section describes detailed information
displayed for each item.

C.01.-- Check of State of Optical Sensor 'OPT. SENSOR'
Displays program information of the optical sensor, the self-diagnostic result measured in the sensor
unit, etc., one by one. In the "OPT. SENSOR" menu screen, press the SET button to display thecheck screen. Use the ▲▼ buttons to select the item to be checked.

Menu screen

Check screen

Items displayed in the check screen and their details are provided on the next page.

- 28 -

5 How to Operate in Check Mode

5-2. Each Item and Details

Items displayed in the optical sensor check screen and their details are as follows.

Displays the program
number.

Displays the sum valueof the program.

Displays the revision
number of the program.

Displays the
specification numberof the optical sensor.

Displays the
manufacturing
equipment number ofthe optical sensor.

Displays the UV
intensity of the lightsource LED1.

Displays the UV
intensity of the lightsource LED2.

Displays the contrastof the interference
fringe (LED1).

Displays the contrast of
the interference fringe(LED2).

Displays the phase θA of Displays the phase θB
the interference fringe.
of the interference
fringe.

Displays the total
phase θALL (+) of theinterference fringe.

Displays the total phaseamount θALL (-) of theinterference fringe.

Displays the order
calculation value θINT(+) of the interference
fringe.

Displays the amountof change in therefractive index N (+).

Displays the amount ofchange in the refractive
index N (-).

Displays the voltage of
Displays the voltage of
Displays the voltage
the power supply system the power supply system of the light source(3.3 V system).
(5.0 V system).
LED1 drive circuit.

Displays the order
calculation value θINT(-) of the interference
fringe.

Displays the voltage ofthe light source LED2
drive circuit.

Displays miscellaneous self-diagnostic flags
monitored in the sensor unit.

- 29 -

5 How to Operate in Check Mode

5-2. Each Item and Details

C.02.-- Check of State of Main Controller 'MAIN CONTROLLER'
Displays program information of the main controller, the result of the self-diagnostic performed inside,etc.
In the "MAIN CONTROLLER" menu screen, press the SET button to display the check screen. Use
the ▲▼ buttons to select the item to be checked.

Menu screen

Check screen

Items displayed in the main controller check screen and their details are as follows.

Displays the program
number.

Displays the sum valueof the program.

Displays the revision
number of the program.

Displays the
manufacturing
equipment number ofthe main controller.

Displays the voltage of
Displays the voltage of
Displays the voltage
the power supply system the power supply system of the power supply(3.3 V system).
(5.0 V system).
system (24 V system).

The 4 to 20 mA signal to
be input to the digital
reading adjustment
meter.

Displays miscellaneous self-diagnostic flags
monitored in the main controller.

- 30 -

Displays the
specification numberof the main controller.

5 How to Operate in Check Mode

5-2. Each Item and Details

C.03.-- Check of State of 4 to 20 mA Setting '4-20mA PARAM.'
Displays the condition, setting, etc., of the 4 to 20 mA signal.
In the "4-20mA PARAM." menu screen, press the SET button to display the check screen. Use the▲▼ buttons to select the item to be checked.

Menu screen

Check screen

Items displayed in the main controller check screen and their details are as follows.

Displays themeasurement value atwhich 4 mA is input inmeasuring mode.

Displays themeasurement value atwhich 20 mA is input inmeasuring mode.

The 4 to 20 mA signal to
be input to the digital
reading adjustment
meter when anabnormality is detected.
*

The 4 to 20 mA signal to
be input to the digital
reading adjustment
meter when the function
check is activated.

* The output value that is set to "HOLD" means that the value just before the entry into the state is
input to the digital reading adjustment meter.

- 31 -

5 How to Operate in Check Mode

5-2. Each Item and Details

C.04.-- Check of Output of Pressure Sensor 'PRESS. SENSOR'
Displays the output of the pressure sensor integrated in the sensor unit.
In the "PRESS.SENSOR" menu screen, press the SET button to display the check screen. Use the▲▼ buttons to select the item to be checked.

Menu screen

Check screen

Items displayed in the pressure sensor output check screen and their details are as follows.

Displays the output of
the fine pressure
difference sensor that
detects the flow rate of
the measured gas
passing through thesensor unit.

This is not used on
FI-915.

Displays the output of
the absolute pressure
sensor used forpressure correction.

- 32 -

5 How to Operate in Check Mode

5-2. Each Item and Details

C.05.-- Check of Output of Temperature Sensors 'TEMP. SENSOR'
Displays the output of the temperature sensors embedded in the LCD display and the sensor unit.
In the "TEMP. SENSOR" menu screen, press the SET button to display the check screen. Use the▲▼ buttons to select the item to be checked.

Menu screen

Check screen

Items displayed in the main controller check screen and their details are as follows.

Displays thetemperature of the main
controller.

Displays thetemperature of theinside of the sensor unit.

- 33 -

5 How to Operate in Check Mode

5-2. Each Item and Details

C.06.-- Check of Output of Self-diagnostic 'DIAG. ACTION (F)'
Displays detailed operation settings of the LCD display, FAIL lamp (red) and fault alarm contact
output (19) - (20) for each condition for when the self-diagnostic/monitoring function detects"FAILURE." Since this function is intended to be operated by our service engineer, its description isomitted.

Menu screen

Check screen

C.07.-- Check of Output of Self-diagnostic 'DIAG. ACTION (S)'Displays detailed operation settings of the LCD display and O.SPEC lamp (orange) for eachcondition for when the self-diagnostic/monitoring function detects "OUT OF SPECIFICATION." Since
this function is intended to be operated by our service engineer, its description is omitted.

Menu screen

Check screen

C.08.-- Check of Output of Self-diagnostic 'DIAG. ACTION (M)'Displays detailed operation settings of the LCD display and M.REQ. lamp (green) for each condition
for when the self-diagnostic/monitoring function detects "MAINTENANCE REQUIRED." Since thisfunction is intended to be operated by our service engineer, its description is omitted.

Menu screen

Check screen

C.09.-- Check of Output of Self-diagnostic 'DIAG. ACTION (C)'
Displays detailed operation settings of the LCD display and F.CHK. lamp (orange) for each condition
for when FI-915 enters the "FUNCTION CHECK" state. Since this function is intended to be operated
by our service engineer, its description is omitted.

Menu screen

Check screen- 34 -

5 How to Operate in Check Mode

5-2. Each Item and Details

C.10.-- Check of Output of Self-diagnostic 'DIAG. ACTION (A)'
Displays operation settings of the LCD display, ALM1 lamp, ALM2 lamp, contact output 1 (15) - (16)and contact output 2 (17) - (18) for when the product's measurement result reaches an alarm
condition.

Menu screen

Check screen

C.11.-- Check of Status Flag 'DISP. STATUS. FLG'
Displays the result of the self-diagnostic/monitoring function. In the "DISP. STATUS. FLG" menu
screen, press the SET button to display the check screen. Use the ▲▼ buttons to select the item tobe checked.

Menu screen

Check screen

Items displayed in the main controller check screen and their details are as follows.
Press the SET button to display details of a problem occurring currently.
When no problem is occurring, "NO FLGS" is displayed.

While a condition where the trace display *1 is performed is detected, press
the SET button to display details of the condition detected.
When nothing is detected, "NO FLGS" is displayed.
While a condition where the contact operation self-latching *2 is performed is
detected, press the SET button to display details of the condition detected.
When no problem is occurring, "NO FLGS" is displayed.
*1
The trace display is a function that alternately displays the normal measurement screen and thescreen of an abnormal state that occurred in the past to inform the customer about the past event
when the product recovers from some abnormal state to the normal state. FI-915 does not use thisfunction.
*2
The contact operation self-latching is a function for a product that outputs some event state through acontact operation. The function holds a contact operation even after a product recovers from a statewith an event occurring to the normal state.
FI-915 does not use this function.

- 35 -

5 How to Operate in Check Mode

5-2. Each Item and Details

C.12.-- Reset of Latching of Display/Contact 'LATCH. RESET'This menu item is for resetting the trace display state of the LCD display and the self-latching state of
the contact. Since FI-915 does not use these functions, there is no need to use this menu usually.
In the menu screen, press the SET button to display the caution screen stating that it will reset thelatching state of the display screen and contact. Press the ▲ button repeatedly to display all the textsof the "caution screen" and read them, and then press the SET button to reset the self-latching stateof the display screen and the contact as well as the trace state of the LCD display.

Menu screen

Check screen- 36 -

6 How to Operate in Setup Mode6

How to Operate in Setup
Mode"Setup mode" is mode to change the measured gas, set the condition of the 4 to 20 mA signal andset the SD card operation, etc.
When this mode is entered, measurement is stopped, the "FUNCTION CHECK" state is entered andthe 4 to 20 mA signal is fixed to the previous value.
(For how to change the output condition, see "S.02.-- Setting of 4 to 20 mA Output Signal '4-20mA
SETUP'")
To enter "setup mode," press and hold the MODE button for 3 seconds or more in measuring mode
to display the mode change screen, use the ▲▼ buttons to select "SETUP MODE," and then press
the SET button to confirm.
After that, the password entry screen appears. Use the ▲▼ and SET buttons to enter the charactersof the password one by one. The factory-set password is " 00000 ".
(For how to change the password, see "S.22.-- Change of Password 'CHANGE PASSWORD'")For 3
seconds
or moreMeasuring mode

Mode change screen

Password entry screen

Select SETUP MODE using
the ▲▼ buttons
When the password is entered correctly, the "caution screen" appears stating that measurement will
be stopped and the 4 to 20 mA signal to be input to the digital reading adjustment meter will be fixed.
Press the ▲ button repeatedly to display all the texts of the "caution screen" and read them, andthen press the SET button to stop measurement and display the setup mode menu screen.
(To return to measuring mode from the setup mode menu screen, press and hold the ESC button for
3 seconds or more.)

Setup mode
Menu screen
The ▲ button updates the page
- 37 -

6 How to Operate in Setup Mode

6-1. Items in Setup Mode

6-1. Items in Setup Mode
The following table shows items that are displayed in the setup mode menu screen. The description
for each item is provided on the subsequent pages.

Selects the measured
gas

Sets up the 4 to 20 mA
signal to be input to thedigital reading
adjustment meter

Adjusts the 4 to 20 mA
signal to be input to thedigital reading
adjustment meter

Tests the input of the 4
to 20 mA signal to thedigital reading
adjustment meter

Sets up theconcentration alarmfunction

Tests the concentration
alarm function

Sets up the contact
output operation

Tests the contact output
operation

Performs the reference
calibration

Adjusts the offset of thereading

Adjusts the sensitivity of Sets up the zero
the reading
suppression value ofthe reading

Checks miscellaneous
measurement values

Sets up productoperations for when anabnormal condition isdetected

Sets up productoperations for when acondition out ofspecification is detected

Sets up productoperations for when acondition requiring
maintenance is detected

Sets up productoperations in a function
check state

Sets up productoperations in a gas
concentration alarm
state

Sets up the
RS-485/Modbus
communication

Operates the SD card

Sets up the automaticreference calibration

Setup mode
password change- 38 -

6 How to Operate in Setup Mode

6-2. Each Item And Details

S.03.-- 4 to 20 mA Signal Adjustment '4-20mA ADJ.'The 4 to 20 mA gas concentration output signal. In the "4-20mA ADJ." menu screen, press the SET
button. The "caution screen" will appear stating that the 4 to 20 mA signal will be changed.
Press the ▲ button repeatedly to display all the texts of the "caution screen" and read them, andthen press the SET button. The test signal input screen will appear and a test signal of 4 mA or 20
mA.
Use the ▲▼ buttons to select which test signals to output, and then press the SET button. The PWM
value will start blinking, indicating that each signal level can be adjusted. Use the ▲▼ buttons tochange the PWM value and adjust the signal level, and then press the SET button to confirm.

Menu screen

Use the ▲▼buttons to change
the value, andthen press theSET button toconfirm
Use the ▲▼buttons to change
the value, andthen press theSET button toconfirm
Press the ESC button without confirming to end the adjustment, return to the menu screen andreturn the 4 to 20 mA signal to the state before the test.

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6 How to Operate in Setup Mode

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S. 04.-- 4 to 20 mA Signal Test '4-20mA TEST'
Adjusts any test signal of the 4 to 20 mA output signal. In the "4-20mA TEST" menu screen, press
the SET button. The "caution screen" will appear stating that the 4 to 20 mA signal will be changed.
Press the ▲ button repeatedly to display all the texts of the "caution screen" and read them, andthen press the SET button. The test signal screen will appear and a test signal.
After that, press the SET button. The input value will start blinking. Use the ▲▼ buttons to change
the test signal by 0.1 mA within the range from 0.5 to 22.0 mA.

Use the ▲▼ buttons to change
the signal.

Press the ESC button to end the output test, return to the menu screen and return the 4 to 20 mA
signal to be input to the digital adjustment reading meter to the state before the test.

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6 How to Operate in Setup Mode

6-2. Each Item And Details

S.05.-- Setup of Concentration Alarm Function 'ALARM SETUP'
Set the concentration alarm function. In the "Alarm Setup" menu screen, press the SET button todisplay preset alarm function. After that, press the SET button. The setting contents will start blinking.
Use the ▲▼ buttons to select the alarm function, and then press the SET button to confirm.

Menu screen

Select the alarm type ("h-hh" or "Off") with the ▲▼ buttons andthen press the SET button to confirm.

Change the first alarm setpoint (ALM1) with the ▲▼ buttons andthen press the SET button to confirm.

Change the first alarm setpoint (ALM1) with the ▲▼ buttons andthen press the SET button to confirm.

Change the number of the alarm delay time with the ▲ ▼ button
and then press the SET button to confirm.

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6 How to Operate in Setup Mode

6-2. Each Item And Details

S.06.-- Alarm Test 'ALARM TEST'
Test the concentration alarm function. In the "ALARM TEST" menu screen, press the SET button totest concentration the alarm function. The "caution screen" will appear stating that the 4 to 20 mA
signal will be changed and the alarm contact will be activated.
Press the ▲ button repeatedly to display all the texts of the "caution screen" and read them, andthen press the SET button. Concentration alarm function test screen will appear and the dummy
signal will be output.
Use the ▲▼ buttons to change the dummy signal of the gas concentration measurement result.
When the dummy signal of the gas concentration measurement result changes to a value that fulfills
the alarm condition (ALM1, ALM2), the contact output(Alarm contact output 1, Alarm contact output 2)
is activated.

Menu screen

Concentration
alarm function
test screen

Change the dummy signal of the gas concentration measurement resultwith the ▲▼ buttons.

When the dummy signal of the gas concentration measurement resultchanges to a value that fulfills the first alarm condition (ALM1), thecontact output 1 is activated.

When the dummy signal of the gas concentration measurement resultchanges to a value that fulfills the second alarm condition (ALM2), thecontact output 2 is activated.

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6 How to Operate in Setup Mode

6-2. Each Item And Details

S.07.-- Change of Contact Energization Setting 'CONTACT SETUP'
Sets up the usual condition of energized/de-energized of the contact used in FI-915.
Since this function is intended to be operated by our service engineer, its description is omitted.

S.08.-- Contact Operation Check 'CONTACT TEST'
Outputs a test signal of a usual/unusual state to test the operation of the contact used in FI-915.
Since this function is intended to be operated by our service engineer, its description is omitted.

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6 How to Operate in Setup Mode

6-2. Each Item And Details

S.09.-- Reference Calibration 'REF. CAL'
Performs the reference calibration. In the "REF. CAL" menu screen, press the SET button to display
the "REF. CAL" execution standby screen. Press the SET button again to perform the reference
calibration.

CAUTION Perform the reference calibration in a condition where the reference gas can be drawn
from REF IN.

S.10.-- Offset Adjustment 'OFFSET SETUP'
Performs the offset adjustment of the measurement result. Since this operation is intended to be
performed by our service engineer, the description of how to operate it is omitted.

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6 How to Operate in Setup Mode

6-2. Each Item And Details

S.11.-- Span Adjustment 'SPAN SETUP'
Performs the span adjustment of the measurement result. Since this operation is intended to be
performed by our service engineer, the description of how to operate it is omitted.

S.12.-- Suppression Adjustment 'SUPPRESS'
Sets up the upper limit and lower limit for display of the measurement result. Since this operation isintended to be performed by our service engineer, the description of how to operate it is omitted.

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6 How to Operate in Setup Mode

6-2. Each Item And Details

S.13.-- Check of Miscellaneous Measurement Values 'MEAS. READINGS'
Displays miscellaneous internal data of the sensor. Since this function is intended to be used by ourservice engineer when checking and inspecting the operation of the product, its description isomitted.

S.14.-- Self-diagnostic Operation (at FAILURE) 'DIAG. ACTION (F)'Sets up detailed operations of the LCD display and the contact for each condition for when the
self-diagnostic/monitoring function detects "FAILURE." Since this function is intended to be operated
by our service engineer, its description is omitted.

S.15.-- Self-diagnostic Operation (at OUT OF SPECIFICATION) 'DIAG.
ACTION (S)'Sets up detailed operations of the LCD display and LED lamp for each condition for when the
self-diagnostic/monitoring function detects "OUT OF SPECIFICATION." Since this function isintended to be operated by our service engineer, its description is omitted.

S.16.-- Self-diagnostic Operation (at MAINTENANCE REQUIRED) 'DIAG.
ACTION (M)'Sets up detailed operations of the LCD display and LED lamp for each condition for when the
self-diagnostic/monitoring function detects "MAINTENANCE REQUIRED." Since this function isintended to be operated by our service engineer, its description is omitted.

S.17.-- Self-diagnostic Operation (at FUNCTION CHECK) 'DIAG. ACTION(C)'
Sets up detailed operations of the LCD display and LED lamp for each condition for when FI-915
enters the "FUNCTION CHECK" state. Since this function is intended to be operated by our service
engineer, its description is omitted.

S.18.-- Self-diagnostic Operation (at Concentration Alarm) 'DIAG.
ACTION (A)'Sets up detailed operations of the LCD display and the contact for each condition for when themeasurement result fulfills a concentration alarm condition.
Since this function is intended to be operated by our service engineer, its description is omitted.

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6 How to Operate in Setup Mode

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S.19.-- Setup of RS-485 Communication 'RS-485/MODBUS'
Change the RS-485 (MODBUS) communication settings. In the menu screen, press the SET key todisplay the setting value check screen and display the current settings of communication conditions.
Use the ▲▼ buttons to select a condition for each of the items and then press the Set button toconfirm

CAUTION The RS-485 (MODBUS) communication function is an optional function. For detailed
information such as communication specifications and address maps, please contact ournearest sales office.

Menu screen
Slave ID : 1 to 247.

CAUTION If more than one device is connected on the same line, do not
overlap the slave ID with the other devices.

TRANSMIT : RTU mode, ASCII mode

BAUD RATE: 4800bps, 9600bps, 19200bps, 38400bps, 57600bps, 115200bps

DATA BIT: 7bit, 8bit

STOP BIT: 1bit, 2bit, NONE

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6 How to Operate in Setup Mode

6-2. Each Item And Details

PARITY BIT: NONE, IGNORE, EVEN, ODD

SEND WAIT 1 :8 to 127 characters(fixed value)

SEND WAIT 2 :8 to 127 characters(random value)

Displays all message receipt counters.

Displays the CRC error counter.

Displays the exception error counter.

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6 How to Operate in Setup Mode

6-2. Each Item And Details

Displays the corresponding message receipt counter.

Displays no response or reply counter.

Displays the NAK reply counter.

Displays the BUSY reply counter.

Displays overrun counters.

Select OK and press the Set button to clear all counter values.

Initializes the address map.

CAUTION If the address map is initialized, FI-915 might not communicate properly Since this function is intended to be operated by our service engineer, do not initialize theaddress map.

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6 How to Operate in Setup Mode

6-2. Each Item And Details

S.20.-- SD Card Operation 'SD CARD'
In the "SD CARD" menu screen, press the SET button to display the miscellaneous operation items.
Use the ▲▼ buttons to select an operation item to be executed, and then press the SET button todisplay each execution screen.

Menu screen

Product setting information such as measured gas range, alarm point, andcontact operation can be imported from the SD card and rewritten.
Imports/rewrites
product settings

Product setting information such as measured gas range, alarm point, andcontact operation can be exported to the SD card.
Exports productsettings

Log data of "operational status" and "self-diagnostic result" recorded in the
product can be exported to the SD card.
Exports log data
The operation of the execution screen of each operation item is described on the subsequent pages.

CAUTIONUse one of the following SD cards:
 SD standard: SDSC, SDHC
 File system: FAT16, FAT32- 52 -

6 How to Operate in Setup Mode

6-2. Each Item And Details

S.20.01 Import/Rewrite of Product Settings 'CONFIG IMPORT'
Select the "CONFIG IMPORT" operation item, and then press the SET button. The "caution screen"
will appear stating that the product settings will be rewritten with data in the SD card. Press the ▲button repeatedly to display all the texts of the "caution screen" and read them, and then press theSET button to rewrite the product settings.
After the settings are rewritten, the caution screen appears requiring to restart FI-915. Press the ▲button repeatedly to display all the texts of the "caution screen" and read them, and then restart
FI-915.

⇒

S.20.02 Export of Product Settings 'CONFIG EXPORT'
Select the "CONFIG EXPORT" operation item, and then press the SET button. The "caution screen"
will appear stating that the settings of FI-915 will be exported to the SD card. Press the ▲ button
repeatedly to display all the texts of the "caution screen" and read them, and then press the SET
button to export to the SD card.
After the export is complete, the operation item screen reappears.

S.20.03 Export of Log Data 'LOG EXPORT'
Select the "LOG EXPORT" operation item, and then press the SET button. The "caution screen" willappear stating that log data of product's "operational status" and "self-diagnostic result" recorded in
FI-915 will be exported to the SD card. Press the ▲ button repeatedly to display all the texts of the"caution screen" and read them, and then press the SET button to export to the SD card (it takes 1 to
3 minutes). After the export is complete, the operation item screen reappears.

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6 How to Operate in Setup Mode

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S.21.-- Setup of Automatic Reference Calibration 'AUTO REF. CAL SET'The automatic reference calibration is a function to perform the reference calibration at a specifictime interval automatically using a built-in timer of the product.
Since this function is intended to be operated by our service engineer, its detailed description isomitted.

Sets up ON/OFF of the automatic reference calibration and its operation
cycle.
OFF (automatic reference calibration OFF), 3H (every 3 hours), 6H(every 6 hours), 12H (every 12 hours), 24H (every 24 hours), 2D (every
2 days), 7D (every 7 days), 28D (every 28 days)

Sets up the reference gas drawing time and measured gas drawing time
for performing the reference calibration.

S.22.-- Change of Password 'CHANGE PASSWORD'
Changes the password for entering setup mode. In the "CHANGE PASSWORD" menu screen, press
the SET button to display the password check screen which displays the current password.
After that, press the SET button to display the password entry screen. Use the ▲▼ buttons and SET
button to enter characters 0 to 9 and A to F one by one.
Use the ▲▼ buttons toenter characters one by one
and press the SET button toconfirm.
Menu screen

CAUTION Note that setup mode cannot be entered if the set password is forgotten.
 When forgetting the password, please contact the distributor.

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9 Troubleshooting

9-1. FAILURE

An abnormal temperature
has been detected on themain controller- 63 -

When no abnormality is recognized in the
installation environment,
the main controller may malfunction.

Manual Log
Rev.

RevisionIssue date

0First issue

2018/7/19

1

2-5. Block diagram updated

2018/10/3- 74 -