ICP DAS USA ISN-101 User manual

iSN-101 / iSN-104
Liquid Leak Detection Module
User Manual
iSN-101 iSN-101/DIN iSN-104
Version: 2.3.0
Date: Dec. 2022
Edited by Jerry Tseng

Warranty
All products manufactured by ICP DAS are warranted against defective materials for a
period of one year from the date of delivery to the original purchaser.
Warning
ICP DAS assumes no liability for damages consequent to the use of this product.
ICP DAS reserves the right to change this manual at any time without notice. The
information furnished by ICP DAS is believed to be accurate and reliable. However, no
responsibility is assumed by ICP DAS for its use, not for any infringements of patents or
other rights of third parties resulting from its use.
Copyright
Copyright © 2021 by ICP DAS. All rights are reserved.
Contact Us
If you have any questions, please feel free to contact us via email at:
Servi[email protected]

Contents
1. Introduction........................................................................................................................... 4
2. Hardware .............................................................................................................................. 7
2.1 Specifications .............................................................................................................. 7
2.2 Appearance & Settings ................................................................................................ 8
iSN-101 Appearance.......................................................................................................... 8
iSN-104 Appearance........................................................................................................ 10
2.3 Connector for Power/ RS-485 / Liquid Leak Detection Cable / Relay Output............. 11
2.4 Pin Assignments ........................................................................................................ 14
2.5 Wire Connections ...................................................................................................... 15
2.6 Application ................................................................................................................ 16
2.7 Dimensions (unit: mm) .............................................................................................. 18
3. Configuration via RS-485 .................................................................................................... 19
Appendix A: DCON Command Sets ....................................................................................... 26
A-1. iSN-101/104 DCON Command Sets ........................................................................ 26
Appendix B: ModbusMasterToolPC ........................................................................................ 31
Appendix C: Modbus Address Table ....................................................................................... 35
C-1. iSN-101/104 Modbus Address Mappings (Base 1) ................................................... 35
Revision History ..................................................................................................................... 38

iSN-101/104 User Manual - 4 -
1. Introduction
The iSN-101/104 Liquid Leak Detection Module is a low-cost intelligent liquid leak
detection device that iSN-101 can be used to directly control Relay Output. No
additional conversion module is needed and the iSN-101/104 can be easily integrated
with a variety of monitoring systems to achieve remote alarm and remote device control.
The iSN-101/104 Liquid Leak Detection module can be used to monitor double-core
leader cable lengths of up to 500 meters, and can be used with both the Liquid Leak
Detection Cable and its included Leakage Probe. If liquid is detected, the controller
immediately activates the output relay - the normally open, normally closed passive
output signal. The module can be easily integrated with other collection hosts
connected to the network. The iSN-101/104 is suitable for real-time leak detection in
critical locations, such as computer room base stations, warehouses, libraries,
museums and industrial sites, and also for air handling equipment, refrigeration units,
liquid containers, or pump tanks, etc., where there is a need to monitor any leakage of
the equipment.
When required, communication with the iSN-101/104 can be programmed based on the
Modbus RTU protocol, with the added benefit that different addresses can be
configured via hardware to allow for Modbus RTU communication.

iSN-101/104 User Manual - 5 -

iSN-101/104 User Manual - 6 -
Features
Leak detection triggers and audible alarm
Open wire detection triggers and audible alarm
(iSN-101 Only for after 2021,Q1(FW:A1.3 or later) and used with CA-LLD-DC100X-Lxxx +
CA-LLD-DC100X-TR to have Open wire detection. )
A mute button to silence the alarm
Two LED indicators to display the status of the power and the alarm
(iSN-104 have Five LED)
A configurable Output Relay (only iSN-101)
Leader cables and Liquid Leak Detection Cable can be up to 500 meters.
Adjustable detection sensitivity
Supports the DCON and the Modbus RTU Protocols
Embedded Dual Watchdog
Wide Operating Temperature Range: -25 to +75°C
Tiny Form Factor with Easy Screw Mounting

iSN-101/104 User Manual - 7 -
2. Hardware
2.1 Specifications
Model iSN-101 iSN-104
Analog Input
Channels 1 4
Wiring Cables Length 500 meters(include Liquid Leak Detection Cable)
Adjustment of the Detection
Sensitivity
26KΩ~580KΩ
Communication
Interface RS-485
Data Format N,8,1 / O,8,1 / E,8,1 / N,8,2
Baud Rate Software Configuration: 1200 ~ 115200 bps
Protocol Modbus RTU or DCON
Node Addresses 96 ~ 127 for hardware configuration
0 ~ 255 for software configuration
LED Indicators
Power 1 as Power Indicator(Green LED)
1 as Power Indicator (Red LED)
Alarm 1 as Alarm Indicator (Red LED)
4 as Alarm Indicator (Red LED)
Audible alarm
Audible alarm 70 dB Audible alarm with silence button(switch)
Relay Output
Form C Relay 0.25A @ 250VAC
0.5 A @ 125 VAC
2 A @ 30 VDC
-
-
EMS Protection
ESD (IEC 61000-4-2) ±8 kV Air for Random Point
EFT (IEC 61000-4-4) ±4 kV for Power
Power Requirements
Reverse Polarity Protection Yes
Input Voltage Range +10 ~ +30 VDC
Consumption 1.5 W Max. 1.6 W Max.
Mechanical
Dimensions (L x W x H) 83 mm x 70 mm x 29 mm 72 mm x 95 mm x 57mm

iSN-101/104 User Manual - 8 -
Installation Screw Mounting or DIN-Rail DIN-Rail
Environment
Operating Temperature 0 ~ +50°C
Storage Temperature -30 ~ +75°C
Humidity 10 ~ 90% RH, Non-condensing
2.2 Appearance & Settings
iSN-101 Appearance
LED Indicators
The two LED indicators from up to down are:
Alarm: red for leak alarm condition.
blinking red for open wire alarm condition.
*(iSN-101 Only for after 2021,Q1(FW:A1.3 or later) and used with
CA-LLD-DC100X-Lxxx + CA-LLD-DC100X-TR to have Open wire detection. )
PWR: green for normal operation.
Sound off Button
The button is used to stop the audible alarm.
Audible alarm
70 dB Audible alarm with silence button
Alarm Relay Output
1-ch Input
Alarm Indicator
Address
RS-485
Sensitivity
Power Indicator
Power
Sound off
DIP Switch

iSN-101/104 User Manual - 9 -
Sensitivity Adjustment
Sensitivity Adjustment Range: 26KΩ ~ 580KΩ
 1-ch Input
Insert Leader Cable. As cable termination is not polarity conscious
DIP Switch
Address
Relay Output
Wire Connection:
Output Type ON State
Readback as 1
OFF State
Readback as 0
Relay Output

iSN-101/104 User Manual - 10 -
iSN-104 Appearance
LED Indicators
The five LED indicators:
Alarm: LED light leak alarm condition.
LED blinking for open wire alarm condition.
PWR: Power LED.
Audible alarm
70 dB Audible alarm with silence button
Sensitivity Adjustment
Sensitivity Adjustment Range: 26KΩ ~ 580KΩ
4-ch Input
Insert Leader Cable. As cable termination is not polarity conscious
4-ch Input
RS-485
Address
DIP Switch
Power
Sensitivity
LED Indicators

iSN-101/104 User Manual - 11 -
DIP Switch
Address
2.3 Connector for Power/ RS-485 / Liquid Leak Detection Cable / Relay
Output

iSN-101/104 User Manual - 12 -
Connect the Leader Plug to Liquid Leak Detection Plug
CA-LLD-DC100-Lxxx CA-LLD-DC100X-Lxxx CA-LLD-EC-L030 CA-LLD-DC100X-TR
CA-LLD-DP100 ASO-0051 ASO-0052
CA-LLD-DC100-Lxxx Liquids Leak Detection Cable, w/o Position and cannot be connected in series
CA-LLD-DC100X-Lxxx Liquids Leak Detection Cable, w/o Position and can be connected in series
CA-LLD-EC-L030 The leader cable can be extended with a shielded twiced pair cable, AWG
18~14. The total cable length that includes leader cable and Liquid Leak
Detection Cables is 500 m max.
CA-LLD-DC100X-TR Terminal Resistor, for CA-LLLD-DC100X-Lxxx
CA-LLD-DP100 Leakage Probe
ASO-0051 180 Hold-Down Clip (include 50 pcs)
ASO-0052 90 Hold-Down Clip (include 50 pcs)
The fool-proofing groove (as red circle) is useful for easy connection of Liquid Leak Detection Plug and
Leader Plug. Please make sure they are located in the same direction when connecting these two items.
Make sure to tighten firmly
Leader Plug
Liquid Leak Detection Plug

iSN-101/104 User Manual - 13 -
Connect the Leakage Probe with Wires
Take off cover
Put wire and tighten the screw down

iSN-101/104 User Manual - 14 -
Put cover back
Install the two mounting screws into the 2 keyhole mounting holes.
2.4 Pin Assignments
iSN-101 iSN-104

iSN-101/104 User Manual - 15 -
2.5 Wire Connections

iSN-101/104 User Manual - 16 -
Extended Cable : We suggest to use twisted pair cable AWG18-14 with shielded,
sectional area from 0.75 ~ 2.0mm2.. The Leader Cable can be increased in length with
an extended cable, up to 500 meters including the Liquid leak Cable.
2.6 Application
Liquid Leak Detection Cable
Liquid Leak Detection Cable is designed to detect leaks over a wider area, and the path of the
leak is not easily predetermined. The Liquid Leak Detection Cable is ideal for open areas. The
Liquid Leak Detection Cable can even be fixed directly to the water supply and return lines.
Liquid Leak Detection Cable is suitable for larger surface areas with multiple leak points.
Polymer carrier
Liquid Leak Detection wires
Continuity wires
Liquid forming current loop trigger alarm

iSN-101/104 User Manual - 17 -
Leakage Probe
Leakage Probe are designed to detect leaks at specific locations and specific water levels.
The base of the Leakage Probe has two probes. To detect a leak, the water must touch both
probes at the same time, thus completing a circuit and triggering an alarm. Leakage Probe are
ideal for drains, Water storage tank, containers and other restricted areas.
Stainless steel probes
Water supply
Liquid forming current loop trigger alarm
Server Room Floor
Terminal Resistor
Liquid forming current loop trigger alarm open wire status trigger alarm
Terminal Resistor
*(iSN-101 Only for after 2021,Q1(FW:A1.3 or later) and used with CA-LLD-DC100X-Lxxx + CA-LLD-DC100X-TR to have Open wire detection. )

iSN-101/104 User Manual - 18 -
iSN-101/104 senses various water levels through the Leakage Probe
2.7 Dimensions (unit: mm)
iSN-101

iSN-101/104 User Manual - 19 -
iSN-104
3. Configuration via RS-485
 The factory default settings for RS-485 communication
 Address: 1
 Protocol: Modbus/RTU
 Baudrate: 9600
 Parity: N,8,1
 Response Delay (ms): 0
Note
If there are multiple iSN-101/104 connected to the same RS-485 network, each
module needs be set with a unique RS-485 address. More than one module having
the same address will cause communication failure
 Testing RS-485 Communication
1. Download the DCON Utility Pro from
https://www.icpdas.com/en/product/guide+Software+Utility_Driver+DCON__Utility__Pro

iSN-101/104 User Manual - 20 -
2. Launch the DCON_Utility_Pro.exe.
3. Click the icon to configure the COM port.
4. Select the COM Port number used to connect the iSN-101/104 logger.
Set COM port Configuration
Start Search
Stop Search