ELSA 3L-SP User manual

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3L-SP/AP
Leak Control Panel with
Alarm and LCD Display
For
Liquid Leakage
Locating & Detection System
User Guide
(2017 Rev 1)

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TABLE OF CONTENTS
CHAPTER 1 QUICK GUIDE TO INSTALLATION...................................................................................... 4
1.1 INTRODUCTION.................................................................................................................................4
1.2 3L-SP/AP PANEL WIRING DETAILS.....................................................................................................4
1.2.1 3L-SP/AP PANEL PIN NUMBER DETAILS ....................................................................................4
1.2.2 CABLE CONNECTION DETAILS ...................................................................................................6
1.2.3 3L-SP/AP CONTROL PANEL –POWER ON .................................................................................7
1.3 TESTING PROCEDURE........................................................................................................................7
1.4 FALSE ALARM TROUBLESHOOTING...................................................................................................8
1.5 TAG OR LABEL FOR SENSING CABLE .................................................................................................8
1.6 HOLD DOWN CLIP FOR SENSING CABLE............................................................................................9
1.7 3L-SP/AP PANEL MOUNTING HOLE DIMENSIONS ............................................................................9
CHAPTER 2 PRODUCT SPECIFICATION.............................................................................................. 10
2.1 GENERAL FEATURES........................................................................................................................10
2.2 ENVIRONMENTAL RATINGS ............................................................................................................11
2.3 POWER REQUIREMENTS .................................................................................................................11
2.4 POWER RELAYS SWITCHING CHARACTERISTICS .............................................................................11
2.5 SUPERVISING CHANNEL ..................................................................................................................11
2.6 SERIAL COMMUNICATION INTERFACE............................................................................................11
2.7 COMPLIANCE TO INTERNATIONAL STANDARDS.............................................................................11
CHAPTER 3 PRODUCT SELECTION GUIDE.......................................................................................... 12
3.1 3L-SP/AP PANEL WITH MULTI ZONES .............................................................................................12
3.2 3L-SP/AP PANEL FAIL SAFE LOOP BACK CONNECTION DETAILS .....................................................12
3.3 3L-SP/AP PANEL WITH EXTERNAL RELAY AND SOLENOID VALVE...................................................14
3.4 3L-T-JOINT CONNECTION DETAILS..................................................................................................15
3.5 3L-DS WITH MULTI ZONE CONNECTION DETAILS...........................................................................16
3.6 3L-SP WITH 3L-SP/AP CONNECTION DETAILS .................................................................................17
3.7 RS485 MODBUS COMMUNICATION PROTOCOL ............................................................................18
CHAPTER 4 COMMUNICATION PROTOCOL: MODBUS PARAMETERS OF 3L-SP/AP ............................. 19
CHAPTER 5 MAINTENANCE SERVICE PROCEDURE ............................................................................ 20
5.1 MAINTENANCE SERVICE..................................................................................................................20
5.2 MANUFACTURING PRODUCT INFORMATION AND CONTACT........................................................20

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5.3 TESTING & COMMISSIONING CHECK LIST.......................................................................................21
CHAPTER 6 TROUBLESHOOTING GUIDE ........................................................................................... 25
6.1 TROUBLESHOOTING........................................................................................................................25
6.2 TROUBLESHOOTING FALSE ALARMS AFTER INSTALLATION ...........................................................26
6.2.1 CONTINUOUS FALSE ALARM - POSSIBLE SCENARIOS: ............................................................27
6.2.2 INTERMITTENT FALSE ALARM - POSSIBLE SCENARIOS: ..........................................................29
CHAPTER 7 APPLICATIONS .............................................................................................................. 33

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CHAPTER 1 QUICK GUIDE TO INSTALLATION
1.1 INTRODUCTION
3L-SP/AP is an advance panel of Early Warning Leak Locating System. Once leak is detected, it responses
within 18 seconds and provide liquid leakage location accurately. This panel shall be mounted directly on
the wall or within the enclosure box.
General Features:
LCD with backlight –4 lines, up to 35 characters
Sensing Cable Length –up to 200m per panel
Communication interface with BMS/EMS & High level RS485/Modbus interface protocol
4 x Relay (2-Trouble relay & 2-Leak relay)
Alarm by Buzzer (90dB max.) and LED indicator
1.2 3L-SP/AP PANEL WIRING DETAILS
1.2.1 3L-SP/AP PANEL PIN NUMBER DETAILS
Figure 1: 3L-SP/AP PANEL
A
B
F
C
D
E
G H I
1
2
3
4
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
J
K
L

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Pin number
Details
Pin number
Details
Leader cable - RED
Trouble Relay –NO
(Normally Open)
Leader cable - WHITE
Trouble Relay - COM
Leader cable - GREEN
Trouble Relay –NC
(Normally Close)
Leader cable - BLACK
Leak Relay –NO
(Normally Open)
N.A
Leak Relay - COM
N.A
Leak Relay –NC
(Normally Close)
N.A
Leak Relay –NO
(Normally Open)
MODBUS - COM
Leak Relay - COM
MODBUS - (+) ve
Leak Relay –NC
(Normally Close)
MODBUS - (-) ve
AC Supply 100-240V - LIVE
Trouble Relay –NO
(Normally Open)
AC Supply 100-240V - NEUTRAL
Trouble Relay - COM
AC Supply 100-240V - EARTH
Trouble Relay –NC
(Normally Close)
Point A - - Representing move “UP” action or as digit # “1”.
Point B - - Representing “OK” action or as digit # “2”.
Point D - - Representing move “Down” action or as digit # “3”.
Point C - - Representing System Menu for “Setup” action or as digit # “4”.
When pressing “Setup” button, the LCD display will show a list of System Menu to select.
Sensor Lengths: It shall show the length of sensing cable of each monitoring zone
System Parameters:
Sound ON/OFF Setup (Password protected: Default password is “12341234”)
-To permanently turn ON or OFF the Alarm/Buzzer.
System Setup (Password protected: Default password is “12341234”)
-Modbus Interface
oFor interfacing with high level Building Management System (BMS) or SP
panel. Can assign from 1 to 100 numbers of code.
-Time/Date Setup
oTo set or adjust Time and Date.
B
C
A
D
2
4
3
5
1
14
15
18
16
17
19
20
21
7
6
9
8
10
13
11
12
22
23
24
25
7

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Point - Representing Alarm “Sound OFF” action or as digit # “5”.
Point C - - Representing “System LCD display, displays the operation process of 3L-SP/AP panel.
Point B - - Representing “Power LED”.
Point D - - Representing “Leak LED”.
Point C - - Representing “Trouble LED”.
Point B - - Representing DIP switch. Always default number #1.
Point D - - Representing sensitivity adjustment.
Point C - - Representing sensing cable total length adjustment.
1.2.2 CABLE CONNECTION DETAILS
Sensing cable connection:
Follow the color code such as R-Red, W-White, G-Green & B-Black by using leader cable.
Output (To Panels):
N.A
MODBUS (To 3L/SP,3L-SP/DP,BMS OR EMS):
Connect RS485 communication cable to Building Management System (BMS) or
Environment Management System (EMS).
E
F
G
H
I
J
K
L
Figure 2: Schematic diagram for 3L-SP/AP with one zone

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Trouble Relay:
Sensing cable break or Power failure will activate this Trouble Relay.
Number of “Trouble” Relays: 2 units, Single Pole Double Throw (SPDT).
Leak Relay:
Liquid leaked detected on the sensing cable will activate this “Leak” Relay.
Number of “Leak” Relays: 2 units, Single Pole Double Throw (SPDT).
Power Supply:
100VAC~240 VAC input power supply. (Optional: 12 VAC/12 VDC or 24VAC/24VDC is
available upon request. Battery Backup option is also available upon request.)
1.2.3 3L-SP/AP CONTROL PANEL –POWER ON
Check all power supply cable, dry contacts are properly connected (see all detail wires connection
indication under section 1.2).
Switch ON AC Power to 3L-SP/AP
Check 3L-SP/AP in TEST mode or self-initialization:
An audible alarm/buzzer sound.
“POWER” LED turn on as GREEN when power supply is in normal condition.
“LEAK” LED turn off when all sensing cable do not detect any liquid leakage.
o“LEAK” LED will turn on RED when leak occur at any Control Panel.
“TROUBLE” LED turn off when all wires are properly connected
“TROUBLE” LED will turn on YELLOW when sensing cable break occur.
Check LCD displays “ELSA ADV. SYSTEMS SUPERVISION <ON>” after self-initialization has
completed and all are under normal condition.
“Time” is display on the top left of the LCD.
“Date” is display on the top right of the LCD.
1.3 TESTING PROCEDURE
Leak Test:
Pour some drop of liquid (to simulate liquid leakage) on the floor.
Check red “Leak” LED turns ON continuously.
Check display “LEAK” and leak location in meter.
Check Buzzer continuous sound.
Leak Relay/Dry Contact will be activated.
Removed all liquid with dry cloth in spiral way and dry the cable.
Check 3L-SP/AP, it will clear the fault automatically and the “Leak” LED turns OFF, Buzzer stops
sounding and display “LEAK CLEARED” then comes back normal.
LCD display will show “Date, Time and SUPERVISION (ON)”
Note: 3L-SP/AP shall detect multi leak (1st leak and 2nd leak), but 3L-SP/AP panel cannot show accurate
leak location if the previous leakage alarm not be cleared.

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Cable Break Test:
Disconnect the end termination point (Remove end cap)
Check red “Trouble” LED turns ON.
Check display “CABLE BREAK”.
Check Buzzer intermittent sound.
Trouble Relay/Dry Contact will be activated.
Reconnect end termination point.
Check 3L-SP/AP, it will clear the fault automatically and the “Trouble” LED turns OFF, Buzzer
stops sounding and display “CABLE BREAK CLEARED” then comes back to normal.
LCD display will show “Date, Time and SUPERVISION (ON)”
Note: During Cable Break, 3L-SP/AP still able to detect all preceding cables for leakage alarm.
1.4 FALSE ALARM TROUBLESHOOTING
Cable break alarm
Check the entire cable length for a cut or shearing which cause cable break.
Check all 4 wires (R, W, G, B) connections on sensing cable for continuity by a multi-meter.
oBy using the multi-meter measure the cable resistance (Red &black, white & greed).
The resistance for sensing cable is 25 Ohm/meter.
Leakage alarm
Check the sensing cable for proper installation and avoid contact with metals (or other
conductive elements) which cause leak.
Check sensing cable to identify any badly contaminated by some chemical for unknown
reason.
If the false alarm still not clear Refer CHAPTER 6troubleshooting guide.
1.5 TAG OR LABEL FOR SENSING CABLE
It is recommended to place 3m to 5m per tag or label.
To determine the tag or label location exactly, simulate a leak at that point and get the leak
location from 3L-SP/AP panel. Write the distance on the tag or label.
Figure 3: 3L-Tag for sensing cable

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1.6 HOLD DOWN CLIP FOR SENSING CABLE
It is recommended to place hold down clip with a spacing of 1m per clip.
For corner or any bending angle area, use more clips per 1m.
Use more hold down clip to isolated the sensing cable with the contact of metals.
1.7 3L-SP/AP PANEL MOUNTING HOLE DIMENSIONS
Refer the above figure to get the dimension details for the mounting purpose of 3L-SP/AP panel.
55mm
Figure 4: 3L-HDC for sensing cable
Figure 5: 3L-SP/AP panel dimensions
222mm
146mm

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CHAPTER 2 PRODUCT SPECIFICATION
2.1 GENERAL FEATURES
Maximum accumulated length of sensing cable : 200m
Precision to locate leak location : +/-1m or 0.5%
Failsafe operation : Ability to operate in loop operation
Ability to detect liquid leakage during cable break
Display : Permanent backlight with LCD of 4 lines x 20 English characters
Sound Alarm : 90dB max. buzzer with silencing button
System Menu : Configuration Modbus slave number and sound
Time to display Leak/Trouble from supervised panel : 18 seconds typical
Liquid Leak detection data : Typically, 20mm in length of liquid (e.g. tap water) in full contact
with sensing cable, leak sensitivity is adjustable
Supervised Panels Identification : By different panel number and name with up to 35 characters
Mechanical dimensions : Rugged ABS UL-VO case of 222 x 146 x 55mm
Ingress Protection : Dust-and splash-proof IP 65

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2.2 ENVIRONMENTAL RATINGS
Operating temperature : 0⁰C to 40⁰C (indoor installation only)
Storage temperature : -20⁰C to 70⁰C
Humidity : 5% to 95% non-condensing
2.3 POWER REQUIREMENTS
Power supply : 100-240 VAC, 50/60 Hz
Optional input : 12 to 30 VAC/DC power input
Power consumption : 8VA/3 W maximum
2.4 POWER RELAYS SWITCHI NG CHARACTERISTICS
Cable break/power failure by contact (1 relay) : Operation –SPDT
Switching current -0.5 A at 250 VAC, 1A at 30 VDC
Liquid leakage dry contact : Operation –SPDT
Switching current -0.5 A at 250 VAC, 1A at 30 VDC
2.5 SUPERVISING CHANNEL
Physical support : RS485-two-wire, ESD and surge protected as per IEC 61000-4-2
Protocol : Modbus
2.6 SERIAL COMMUNICATION INTERFACE
Physical support : RS485-two-wire, ESD and surge protected as per IEC 61000-4-2
Protocol : Modbus
Operational GSM/GPRS transmitter interfacing
Optional Modbus over TCP/IP (allow world-wide remote supervision through Internet connection)
Optional BACnet/IP interface
Optional Profibus interface
Optional LONworks interface
2.7 COMPLIANCE TO INTERNATIONAL STANDARDS
EMC emission : IEC61000-6-3(2001) –Electromagnetic compatibility Generic emission
standard for residential, commercial and light industrial environment
EMC immunity : IEC61000-6-1(2001) –Electromagnetic compatibility Generic immunity
standard for residential, commercial and light industrial environment

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CHAPTER 3 PRODUCT SELECTION GUIDE
3.1 3L-SP/AP PANEL WITH MULTI ZONES
Below figure shows how to connect two zones with 3L-SP/AP panel by using jumper cable.
3.2 3L-SP/AP PANEL FAIL SAFE LOOP BACK CONNECTION DETAILS
Below figure shows how to do the fail-safe loop back cable connection with 3L-SP/AP panel by using
“Leader cable (Front) and Leader cable (Back)”. This unique Fail-safe loop back feature shall continue to
detect leak if there is a cable break.
Figure 6: Schematic diagram for 3L-SP/AP with multi zones
Figure 7: 3L-SP/AP Fail -Safe loop back connection

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There shall be two wires (green & black) from the Leader cable (Back), connect the black wire to ‘R’
terminal and connect the green wire to ‘W’ terminal.
There shall be two wires (green & black) from the Leader cable (Front), connect the green wire to
‘G’ terminal and connect the black wire to ‘B’ terminal.
Connect wire coloring code as per above figure when fail-safe loop back connection method is
selected instead of normal end-termination method.
When the black wire (B2 as per above diagram) on the white-black pair of the sensing cable is
broken and the black wire (B1 as per above diagram) on red-black pair remain connected, the
system is still able to detect and locate the leak.
When both wires are broken at any one point of the cable, either side (S1a or S1b as per above
diagram) of the cable is still able to detect leak but it shall not provide the leak location.
Figure 8: Fail-safe cable connection details

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3.3 3L-SP/AP PANEL WITH EXTERNAL RELAY AND SOLENOID VALVE
There is four Relay/Dry contact in 3L-SP/AP panel. Two for Trouble alarm and other two for leakage alarm.
According to our requirement, we shall use any relay for this connection.
NOTE: #1: 3L-SP/AP panel relay (NO)
#2: External relay (2 pole relay –NO)
#3: The solenoid valve (Normal Open) can be replaced by electrical Hooters or warning light or
SMS dialer.
Figure 9: 3L-SP/AP panel with external relay and solenoid valve wiring diagram

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3.4 3L-T-JOINT CONNECTION DET AILS
Below figure shows how to connect 3L-T-Joint with 3L-SP/AP panel. In this T-joint type of sensing cables
normally comes with end termination/endcap.
According to the 3L-T-Joint internal wiring system, cable length shall measure first from output 1 then it
shall go to output 2.
i.e.: Let’s say zone 1 sensing cable length is 40m and zone 2 sensing cable length is 60m.
At point ‘A’ cable length shall be 1m
At point ‘B’ cable length shall be 40m
At point ‘C’ cable length shall be 41m
At point ‘D’ cable length shall be 100m
Figure 10: Schematic diagram for 3L-SP/AP with T-joint
A
B
C
D

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3.5 3L-DS WITH MULTI ZONE CONNECTION DETAILS
3L-DS is the ‘Distance Spacer’ which shall provide ELAS standard 4m distance space in application, this can
be denoted as 3L-DS (04).
i.e.: Let’s say zone 1 sensing cable length is 40m and zone 2 sensing cable length is 60m, 3L-DS is installed
between the ‘output 2’ point and zone 2 starting point.
At point ‘A’ cable length shall be 1m
At point ‘B’ cable length shall be 40m
At point ‘C’ cable length shall be 44m
At point ‘D’ cable length shall be 104m
Figure 11: 3L-SP/AP panel with 3L-DS
A
C
D
B

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3.6 3L-SP WITH 3L-SP/AP CONNECTION DETAILS
3L-SP Panel
Figure 12: Schematic diagram for 3L-SP with 3L-SP/AP
SP/AP
ZONE 1
SP/AP
ZONE 2
SP/AP
ZONE 4
SP/AP
ZONE 3
SP/AP
ZONE 5

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3.7 RS485 MODBUS COMMUNICATION PROTOCOL
Sensitivity Level adjustment: Potentiometer in blue square with white color circle.
Turn the potentiometer (SENS.) anti-clockwise all the way (+ sign on front face) for most sensitivity
level (about 20mm length of tap water).
Turn the potentiometer (SENS.) clockwise all the way (- sign on front face) to for least sensitivity
level (about 200mm length of tap water).
Select slave number: DIP switch in BLACK color component (the picture shows slave or zone #1)
Slave number is set as #1(as picture).
Modbus interface : Modbus Slave Number
Subsequent 3L-SP/AP modules connected in daisy-chain have to be set at different Modbus slave number
(i.e.: different Zone#) so that each can be individually identified by the Supervising system. Refer the below
steps to set Modbus Slave number:
Press “Setup” button.
Select “SYSTEM PARAMETERS”, and Select “SYSTEM SETUP”, and input password : 12341234.
Select “MODBUS Interface”, and change the Modbus slave number.
oFor interfacing with high level Building Management System (BMS) or SP panel. Can assign
from 1 to 100 numbers of code.
After change the Modbus slave number, quit the setup and restart SP/AP panel.
Dip switch: Pin #1 is the Lowest
Significant Bit (LSB)
i.e.: Current setting is for Slave #1
Sensing cable length
adjustment
Sensitivity adjustment

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CHAPTER 4 COMMUNICATION PROTOCOL: MODBUS PARAMETERS OF 3L-SP/AP
Serial port configuration: 9600 B, 8 data bits, 1 stop bit, no parity.
Communication protocol: MODBUS, functions 3 or 4.
Slave (control panel) #: Set-up in a configuration menu on panel.
Maximum no. of words to read per request: 35, 32 recommended to avoid unnecessary loading of
communication lines.
Modbus register address for 3L-SP/AP panel:
Zone 1 [Type of alarm]
Modbus address
(Function 3)
Physical
address (Hex)
Remark
Zone 1 [cable length (Hex)]
40001
0001h
Address value in hex and unit = meter
Zone 1 [cable break (Hex)]
40002
0002h
0 - cable OK,
65535 (decimal)- cable break
Zone 1 [1st leak alarm (Hex)]
40003
0003h
1st leak alarm
0 - no leak
65535 (decimal) - leak alarm
Zone 1 [2nd leak alarm (Hex)]
40004
0004h
2st leak alarm
0 - no leak
65535 (decimal) –leak alarm
Zone 1 [1st leak location (Hex)]
40005
0005h
Address value in hex and unit = meter
Zone 1 [2nd leak location (Hex)]
40006
0006h
Address value in hex and unit = meter
The RS485 polarisation shall be ensured by the supervising station.
The transmission line shall be terminated by a 120 Ohms/1W resistor at the end of the RS485 link
(the last panel of the link). The shield of the data transmission cable should be connected to the
Supervisor’s panel ground point.

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CHAPTER 5 MAINTENANCE SERVICE PROCEDURE
5.1 MAINTENANCE SERVICE
It is recommended to conduct quarterly check on ELSA leak detection system performance by
authorized ELSA distributors/installers.
During quarterly checking and maintenance:
Conduct check list as per page 21 –24 (Testing & Commissioning Check List).
Check physically on the sensing cable surface cleanliness and free from any chemical
contact.
For any parts replacement or extension, ELSA local distributors offer ex-stock and will provide an
immediate turnaround service to meet the requirements.
5.2 MANUFACTURING PRODUCT INFORMATION AND CONTACT
ELSA ADVANCED SYSTEMS PTE LTD
Address : 2, BALESTIER ROAD
#03-687, SINGAPORE 320002.
Tel : [phone]
Web site : www.elsaadv.com
Email : [email protected]