LIQUID LEAKAGE SENSOROPERATION MANUAL
forControl Unit :RS-3000C
Detection Unit :RS-3000FA / FAP
CE Mark ComplianceEN61326

TOYOKO KAGAKU CO., LTD.
Components Business Division
370 Ichinotsubo, Nakahara-Ku, Kawasaki-City, Kanagawa-Pref., JAPAN
Phone: (044)435-5860

Fax: (044)433-5332(Patent. 1783360)
MAN-RS3A-05.12

Introduction
We appreciate that you have purchased our Liquid Leakage Sensor.
Before you install or operate it, please read this operation manual thoroughly, and follow theinstruction in order to avoid any accidents, malfunction, defects and hazards.
Please keep this manual with good care as long as the sensor is being operated.

Table of Contents
1. Designation of Sensors ··································································································3
1-1. Detection Unit RS-3000FA/RS-3000FAP··································································3
1-2. Control Unit RS-3000C·······························································································32. Installation·························································································································42-1. Detection Unit RS-3000FA ·························································································42-2. Detection Unit RS-3000FAP·······················································································42-3. Control Unit RS-3000C·······························································································63. Wiring Instruction ············································································································73-1. Detection Unit Without Control Unit ···········································································73-2. Control Unit RS-3000C and Detection Unit·······························································84. Operation···························································································································94-1. Detection Unit without Control Unit ············································································94-2. Control Unit RS-3000C and Detection Unit·······························································94-3. Distinction of abnormal status···················································································105. Reset Procedure after Alarm Clearance ····································································116. Specification ···················································································································126-1. Detection Unit············································································································126-2. Control Unit················································································································1221.Designation of Sensors
1-1. Detection Unit: RS-3000FA, RS-3000FAP
Indicator Lamp
Red: Liquid Detection
position: Red
Normal: Green

Body /Cable 2m

Floating

Absorbent Paper(RS-3000FA use only) *1
Bracket *1*1: The Bracket is different for RS-3000FA and for RS-3000FAP. These differences areadsorbent paper use or not. For details, refer page 12 Specifications.

1-2. Control Unit: RS-3000C
ＬＥＤ： Red × 8 dots

ＬＥＤ： Green × ８ dots, Green × 1 dot

Dip Switches

Detection Unit

Detection Unit

Input

Input
× 8 ports

× 8 ports

Power DC24V
Relay Output

Power DC24V
Relay Output

Not UseFixed Hook

Spring Hook

Attachment for DIN Rail and 2 holes for screw-down

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2. Installation
2-1. Detection Unit: RS-3000FA(１)Place the Bracket of the Detection Unit on the surface where you want to detect the leakage,and fix it firmly.
* Use the correct Bracket for the detection Unit. Refer to page 8 [Bracket Specification].
(2) Place a piece of the Absorbent paper onto the Bracket.

NOTE: Be aware not to use 2 or more pieces of the Paper at a time in the Bracket.
(3) To mount the Sensor Body, push it into the Bracket completely.

NOTE: Verify that the Body has fixed entirely and it does not hook up at intermediate height in theBracket.

RS-3000FAAbsorbent PaperBracket for the Paper Use P/N-6440

2-2. Detection Unit: RS-3000FAP(1) Place the Bracket of the Detection Unit on the surface where you want to detect the leakage,and fix it firmly.
* Use the correct Bracket for the detection Unit. Refer to page 12 [Bracket Specification](2) To mount the Sensor Body, push it into the Bracket completely.

NOTE: Verify that the Body has fixed entirely and it does not hook up at intermediate height in theBracket.
NOTE: Do not use any absorbent paper for this model.

RS-3000FAP
Do not use the adsorbent PaperBracket for Paperless P/N-6720B

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NOTE: When the sensor is located at the position, align the direction of the detection unit against
the Bracket as described below.
And make sure that the location of the sensor will not have any difficulties for maintenancejob、 or the direction of the cable heads for no obstructions where the cable may not bedamaged by excessive bent or pressure.

Bracket P/N-6440

Detection Unit RS-3000FAP

Bracket P/N-6720B

Detection Unit RS-3000FAP5

2-3. Control Unit RS-3000C
The RS-3000C Control Unit can install onto either DIN Rail or the surface of theplate.
(1) Install the unit onto the DIN Rail as below.

(2) When DIN Rail may not be applied, install the unit on the surface directly to be fixed using two of thescrew as below.

63. Wiring Instruction
3-1. Detection Unit without Control Unit
Both of RS-3000FA and RS-3000FAP is the same wiring feature.
(1) The Detection Unit has a 3-wire sheath cable, 2 meters long.
When the wire may be extended, do not exceed 30 meters long.
Each wire will be connected as below.

Red: Power DC+12 〜24V
White: Output (Normal: ON)
Black: Power 0V(2) Connect the red wire (Positive pole) and the black wire (Negative pole) to the power source
correctly. White wire is for an open collector output.
NOTE: Do not miswire with DC power source each other.

NOTE; Use the sensor unit between the power voltages of DC12V to DC24V.
(3) The output capacity is limited up to 50mA maximum rating. Excessive rating may damage theoutput circuit.

NOTE: When an inductive load may be applied, the protective treatment for the back electromotive
is recommended. The following sample chart shows a hint to add a protective diode (F14Cequivalent) to a relay coil loadDetection
Unit+12〜24V+12〜24V
dioderelaycoilOutput
0V

DC Power Supply0V

NOTE: To avoid short circuit between each wire after the power is supplied, otherwise undesirable
damage may occur.

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3-2. Control Unit RS-3000C and Detection Unit
Both of RS-3000FA and RS-3000FAP is the same wiring feature.
Buzzer Alarm Sensor RS-3000FA-BZ, RS-3000FAP-BZ, can be connected with RS-3000C as
the same manner
Use the attached connectors for wiring with the Control Unit RS-3000C. The instruction of theconnector is available by a separate sheet.
(1) Refer the wiring information in the below illustration.

Detection Unit 1Black Wire
White Wire
Red Wire

GS+

N/A／

Simultaneously 1 to 8
Detection Unit can beserved in.

Detection Unit 8Black Wire
White Wire
Red Wire

GS+

N/A／

Relay Output
Power 0V, 24V

To the Load ofSignal Output

To: DC 24V
Power Supply* The output of the Control Unit is one relay contact only.

84. Operation
WARNING： The following procedure must be implemented after wiring has done and prior tooperation.
4-1. Detection Unit without Control Unit
Both of RS-3000FA and RS-3000FAP is the same wiring feature.
(1) After required installation and the wiring have completed, turn on the power. .At this moment,
Green LED on the Detection Unit will light while the other LED is off.
And the output isON status.
Next proceed either [1] for RS-3000FA or [2] RS-3000FAP as your application.
[1] RS-3000FA
Then the absorbent paper will be removed from the Bracket temporarily. The LED of theDetection Unit will change the color to Red. The output will become OFF simultaneously. Verifythese things happen.
After then, the absorbent paper must be set again. The sensor is now ready for use.
[2] RS-3000FAP
Then pour a drip of water for the test into the close area of the Detection Unit. Upon the water
absorbed by the paper, the LED of the Detection Unit will change its color into Red. The output ofwill become OFF simultaneously.
After then, wipe off the water completely and set the Detection Unit again in the Bracket.

4-2. Control Unit RS-3000C and Detection Unit
Both of RS-3000FA and RS-3000FAP is the same wiring feature.
(1) After required installation and the wiring have completed, turn on the power. The LED Displayof Power will light on. Then set the Dip Switches on the Control Unit. The detailed function
is described the chart in next page.
[Adjusting of Dip Switches]
Put the adequate number of the Dip Switch ON position same as the selected number of the input
port of the Control Unit. For example, 5 of the Detection Unit are connected to the input portof 1 through 5, the Dip Switch of 1 through 5 must be turn ON position and other rest of 6 to 8must be OFF position.
In case that the selected number of the Dip Switch may be OFF in spite the Detection Unit isconnected at the same input number, the output signal from the Detection Unit will not berecognized, then both of the Green and Red LED Display on the Control Unit remain unlit.
(2) Verify the status of all the Detection Unit connected in the Control Unit as described in the above
4.1 section.
(3) When the Detection Unit shows Red LED on and its output is OFF, the LED Display of theControl Unit shows Red (Alarm) on for the selected number, and Relay contact of the output is
OFF=Close.
When all the Detection Unit shows Green LED, the Relay contact of the Control Unit isON=Open.

9Connection and Status Reference Chart
Detection Unit
Dip Switch
LED DisplayRelay Out
Green ONn = Green ON
OFF = CloseRed ONn=ON
n = Red ON
ON = Openn1) Leakage22) Floating position
nNot Connected
n = Red ON
ON = Open3n
Not Connected
N=OFFn = unlit
OFF=Close4* “n” represents selected input number from 1 to 8 of the Control Unit.
* If the correspondent number of the Dip Switch may not be set correctly, the Relay output will notfunction accurately.
1Inputn4-3. Distinction of the abnormal status(1) When the LED of the Detection Unit will not put on, wrong wiring or the damage of the unit by
the short circuit of the output that causes the overload may be possible. Stop to use the unit, andcheck with the wiring and the load status.
(2) On RS-3000FA, abnormally Red LED may light though the absorbent paper is located correctly or
Green LED may light though the absorbent paper is not located, and on RS-3000FAP, abnormally
Green LED may light though the test water penetrates into the detecting area, the Detection
Unit may be damaged. Stop using the unit immediately, and consult the vendor or the factory.
(3) When the incorrect output may be observed though the LED functions correctly, the unit may bedamaged by wrong wiring or overloaded output at the output transistor inside. Check thewiring and the load.
(4) When the Detecting Unit is not placed far into the Bracket as its position, the LED will light Red
and output turns OFF. Check the location of the Detecting unit with its Bracket again, andadjust it if placement is wrong.
(5) When RS03000C Control Unit is applied, be aware that the output of the unit is provided in one
pole only in spite the Detection Unit may be served two or more. When one among thoseconnected Detecting Units may turns the output OFF, the singular relay output of the Control
Unit becomes ON=Open.
All the Dip Switch must be set correctly as instructed before in this manual.

NOTE: The RS-3000 series sensors utilize the optical devices, and the highly intensive light fromoutwards (over 1,000 luxes) may disable the function of the Detecting Unit. The normalintensity like the room light may not affects critically, however for safety, you arerecommended to avoid any devices which emit the intensive light from the Detection Unit
neighborhood, or to shade the light by means of anything applicable.

105. Reset Procedure after Alarm Clearance
WARNING： The liquid may contain hazardous acids, alkalis, or chemical substances. The following
procedure has to be dome by a well-trained person who is knowledgeable for thatliquid.
NOTE： The protection gloves must be worn.
NOTE： In case of handling any chemicals that are obliged to wear the protection goggles, masks, etc.
by regulation, must follow the regulation.
(1) Turn off the power..
(2) Remove the Detection Unit from the Bracket, and wipe the liquid off.
(3) Remove the wet Absorbent Paper and wipe the Bracket and surroundings. Replace with a newpaper then reset to follow the process of Installation of the Detection Unit.
(4) If the absorbent paper is not applied, wipe the unit, the Bracket and the surroundings. Thenreset to follow the process of installation section in this manual.
(5) Turn on the power again then the reset is completed..
(6) Check the function of the sensors with the steps of the Section 4.1 to 4.2. Operation(7) Achieve periodical maintenance check of the sensor.
As the material of the absorbent paper is cellulose, then periodical replacement of the paper isrecommended if the sensor is located for a respectively long time.

NOTE： The periodical check is recommended at least annually, in accordance with your factory
direction.
WARNING： This sensor is not explosion proof. Do not use in the area where explosion proof isspecified.

116. Specification
6-1. Detection Unit
Model

RS-3000FA

Supply Voltage

RS-3000FAPDC 12〜24V ±10%

Current

20mA below

Indication of LED
OutputLeakage: Red, Floating position: Red, Normal: GreenNPN open collector, 50mA max (normal; ON)−10〜60℃

Ambient Temp.

Material

Case

PFA

Cable

FEP, 3-wire sheath

Lamp

Epoxy (embedded)

Water Protect

Sealed, IP 67 equivalent (IEC)

WeightApprox 40g

Absorbent Paper

Required

Not Required

BracketP/N-6430

P/N-6720B

6-2. Control Unit
Model

RS-3000C

Input Voltage

24V DC±10%Power Consumption

200mA belowInput

Simultaneously 1 to 8 Input available
Independent LED Display for every Input Number( Red, Green x 8)

LED Display

Normal: Green, Leakage: Red
No Connection: Unlit both Green and Red
Relay Output × 1

OutputNormal Status: Close, Leakage or Alarm: Open, Power Failure: Open
Ambient Temp.

−10〜60℃ environment

Case Material

ABS Polymer
Input: 8 Connector ports (Lock feature)

Cable connection
Power & Output: 1 Connector port (Lock feature)
Installation

DIN Rail installation, Screw fix up

Wiring Error

Cut circuit detection feature available
RS-3000FA, RS-3000FAP; RS-3000FA-BZ*, RS-3000FAP-BZ*

Applicable Detection Unit(* marked models are Buzzer Alarm Leak Sensor)* The adopted Connector to the Control Unit is OMRON, XN2A-1430.
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