MDT Technologies SCN-LSEN1.01 User manual

MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1 • Germany
Phone: [phone] • [email protected] • www.mdt.de
State 12/2022 Version V1.0
Technical Manual
MDT Leakage Sensor KNX
SCN-LSEN1.01
Further Documents:
Datasheet:
https://www.mdt.de/EN_Downloads_Datasheets.html
Assembly and Operation Instructions:
https://www.mdt.de/EN_Downloads_Instructions.html
Solution Proposals for MDT products:
https://www.mdt.de/EN_Downloads_Solutions.html

Technical Manual
Leakage Sensor KNX [SCN-LSEN1.01]
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1 • Germany
Phone: [phone] • [e-mail] • www.mdt.de
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1 Content
1Content............................................................................................................................2
2Overview .........................................................................................................................3
2.1 Overview devices.................................................................................................................. 3
2.2 Special functions .................................................................................................................. 3
2.3 Exemplary Circuit Diagram ................................................................................................... 3
2.4 Structure & Handling ............................................................................................................ 4
2.5 Commissioning ..................................................................................................................... 4
3Communication objects ....................................................................................................5
3.1 Standard settings of the communication objects................................................................. 5
4Reference ETS-Parameter ................................................................................................6
5Index...............................................................................................................................8
5.1 Register of illustrations......................................................................................................... 8
5.2 List of tables.......................................................................................................................... 8
6Appendix .........................................................................................................................9
6.1 Statutory requirements ........................................................................................................ 9
6.2 Disposal ................................................................................................................................ 9
6.3 Assembly .............................................................................................................................. 9
6.4 History................................................................................................................................... 9

Technical Manual
Leakage Sensor KNX [SCN-LSEN1.01]
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1 • Germany
Phone: [phone] • [e-mail] • www.mdt.de
3
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2 Overview
2.1 Overview devices
The description refers to the following devices (order number in bold):
•SCN-LSEN1.01 Leakage Sensor, for detecting water leakage
oFloor sensor for detecting water leakage and seepage
oReliable detection of conductive liquids by means of electrolytic AC voltage measurement
oAlarm channel and visual alert
2.2 Functions
The MDT Leakage Sensor uses electrolytic measurement to detect conductive liquids on the floor.
2.3 Exemplary Circuit Diagram
Figure 1: Exemplary circuit diagram

Technical Manual
Leakage Sensor KNX [SCN-LSEN1.01]
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1 • Germany
Phone: [phone] • [e-mail] • www.mdt.de
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2.4 Structure & Handling
The following picture shows the structure of the device:
Figure 2: Structure & Handling
1 = Programming button (Reed contact, triggered by supplied magnet)
2 = Programming LED
3 = Bus connection cable (red = +, black = -)
2.5 Commissioning
After wiring the unit, the physical address is assigned, and the application is programmed:
(1) Connect the programming interface with the bus, e.g. with MDT USB Interface.
(2) Switch-on bus voltage.
(3) Activate programming mode on the unit by closing the reed contact (using the magnet
supplied) (red programming LED lights up).
(4) Loading the physical address from the ETS software via the interface (red LED goes out as
soon as this has been successfully completed).
(5) Loading the application, with desired parameterization.
(6) If the device is enabled, you can test the requested functions (also possible by using the
ETS-Software).

Technical Manual
Leakage Sensor KNX [SCN-LSEN1.01]
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1 • Germany
Phone: [phone] • [e-mail] • www.mdt.de
5
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3 Communication objects
3.1 Standard settings of the communication objects
Standard settings
No.
Name
Object function
Length
C
R
W
T
U
0
Alarm ON/OFF
Send status
1 Bit
X
X
X
1
In operation
Send status
1 Bit
X
X
2
Alarm
Reset
1 Bit
X
X
Table 1: Communication objects –Standard settings
The table above shows the preset default settings. The priority of the individual communications
objects and the flags can be adjusted by the user as required. The flags assign the communication
objects their respective tasks in programming, where C stands for communication, R for read, W for
write, T for transmit and U for update.

Technical Manual
Leakage Sensor KNX [SCN-LSEN1.01]
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1 • Germany
Phone: [phone] • [e-mail] • www.mdt.de
6
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4 Reference ETS-Parameter
The following figure shows the available settings:
Figure 3: Settings –Leakage sensor
The following table shows the possible settings:
ETS-Text
Dynamic range
[Default value]
Comment
Startup time
0 … 240 s
[1 s]
Sets the time between restart and
functional start-up of the device.
Send „In-operation“
cyclically
not active
10 min –24 h
Activation of a cyclic "in operation"
telegram.
Send object
„Alarm ON/OFF“
•not active, only request
•on change
•cyclic
•on change and cyclic
Setting of the sending condition for
the alarm object.
Send cyclically every …
10 s –60 min
[1 min]
Setting at which interval the object
is to be sent cyclically.
Behaviour at alarm end
•reset automatically
•reset via object
Specify how an alarm is to be reset.
Delay of message
„Alarm ON“
not active, 10 –60 s
Setting whether and with what
delay the message is to be sent.
Delay of message
„Alarm OFF“
10 s –20 min
[5 min]
Setting of the delay time for the
message.
Only visible if "Behaviour at
alarm end" is set to "reset
automatically".
Table 2: Settings –Leakage sensor

Technical Manual
Leakage Sensor KNX [SCN-LSEN1.01]
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1 • Germany
Phone: [phone] • [e-mail] • www.mdt.de
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Startup time
This time defines when the unit "boots up" after a restart (reset, reprogramming, bus voltage
recovery). This can be important if, for example, a bus reset is carried out. If there are many units
on a line, all units would start at the same time and load the bus. With a variable time, the units can
thus start differently.
„Operation“
"In operation" is used to show on the bus that the unit is "alive". If activated, an ON telegram is sent
cyclically.
Send object “Alarm ON/OFF”
The setting "not active, only request" means that the alarm is not actively sent but can be
requested externally via the object.
"On change" means that the alarm is actively sent on the bus whenever there is a change from ON
to OFF or vice versa.
The "cyclic" setting can be used to set the intervals at which the current alarm status is to be sent.
It is also sent if the status has not changed.
With the selection "on change and cyclic", both settings are reacted to accordingly.
Behaviour at alarm end
This parameter can be used to set whether a triggered alarm is either reset automatically (if "Alarm
OFF") or whether it can only be reset via an object - regardless of whether the alarm has already
ended. Only if "Reset via object" is selected an appropriate object becomes visible. The alarm is
reset by sending a "1".
Delay of message „Alarm ON“ / „Alarm OFF“
An individual delay time for the messages can be set here.
A delay for "Alarm OFF" can only be set with the setting "reset automatically". With "reset via
object", the reset takes place directly via object and without delay.

Technical Manual
Leakage Sensor KNX [SCN-LSEN1.01]
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1 • Germany
Phone: [phone] • [e-mail] • www.mdt.de
8
8
5 Index
5.1 Register of illustrations
Figure 1: Exemplary circuit diagram..................................................................................................... 3
Figure 2: Structure & Handling ............................................................................................................. 4
Figure 3: Settings –Leakage sensor..................................................................................................... 6
5.2 List of tables
Table 1: Communication objects –Standard settings ......................................................................... 5
Table 2: Settings –Leakage sensor...................................................................................................... 6

Technical Manual
Leakage Sensor KNX [SCN-LSEN1.01]
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1 • Germany
Phone: [phone] • [e-mail] • www.mdt.de
9
9
6 Appendix
6.1 Statutory requirements
The devices described above must not be used in conjunction with devices which directly or
indirectly serve human, health, or life-safety purposes. Furthermore, the devices described must
not be used if their use may cause danger to people, animals, or property.
Do not leave the packaging material carelessly lying around. Plastic foils/ bags etc. can become a
dangerous toy for children.
6.2 Disposal
Do not dispose of the old devices in the household waste. The device contains electrical
components that must be disposed of as electronic waste. The housing is made of recyclable
plastic.
6.3 Assembly
Danger to life from electric current!
The device may only be installed and connected by qualified electricians. Observe the country-
specific regulations and the applicable KNX guidelines
The units are approved for operation in the EU and bear the CE mark. Use in the USA and Canada is
not permitted!
6.4 History
V1.0 First Version of Technical Manual DB V1.0 12/2022