WIRELESS FLOOD DETECTOR
«
CN-Flood-Mini
»
1 Product Overview
1.1 Wireless flood detector «CN-Flood-Mini» (hereinafter, the
Detector) is intended for detecting leaks of water from water-supply
pipelines or heating facilities and generating an alarm message via
a two-way communication by the «CN-Contact-R» protocol. The
Detector is intended to operate as a component of any control
panel (hereinafter, CP) supporting the wireless exchange protocol
«CN-Contact-R».
1.2 Water leaks control is ensured by measurement of an external
resistance between sensor terminals of the Detector.
1.3 Radio signals are exchanged within the 433.05 to 434.79 MHz
frequency range. The transmitter output power does not exceed
10 mW.
1.4 Two operating frequencies: main and reserve are used for the
wireless data exchange. The Detector switches over reserve operating
frequency automatically.
1.5 Radio exchange sessions are initiated by the Detector at a
preset frequency. The frequency settings are 10, 15, 30 sec, 1, 5,
10 min, chosen in the process of the binding procedure. The Detector
transmits alarm messages to the CP immediately.
1.6 The Detector power supply is provided by power supply batteries
placed inside it’s case: the main one and the backup one (CR2450).
1.7 The Detector state is displayed by two-color LED indicator.
1.8 The Detector generates and transmits the following messages
via a two-way communication:
- «Norm» – if the external resistance between sensor terminals value
is 200 k
Ω
or more;
- «Alarm» – if the external resistance between sensor terminals
value is 100 k
Ω
or less;
- «Tamper» – in the event of case tampering or the Detector removal
from the mounting surface;
- «Main Power Supply Low Battery» – under the main power supply
battery voltage drop below 2.8
-0.4
V;
- «Backup Power Supply Low Battery» – under the backup power
supply battery voltage drop below 2.8
-0.4
V.
1.9 The Detector is designed to operate continuously, around the
clock.
2 Features
Table 1
Parameter
Value
Operating temperature, °C
minus 20 … +50
Permissible relative humidity at +25 °С without
moisture condensation up to, %
95
Ambient class
Boreal Climate *
IP rating
IP65
Dimensions, maximum, mm
65 x 55 x 20
Weight, maximum, kg
0,05
Average service life, not less, years
8
Operation time upon normal climate conditions* and
preset wireless signal exchange rate 30 sec and
more, months:
- from the main battery, not less:
- from the reserve battery, not less:
36
2
* background temperature 15 – 35 °C, relative air humidity
25 – 75 %, air pressure 86 – 106 kPa.
3 Scope of Delivery
Each Detector unit package contains the items listed in Table 2.
Table 2
Name
QNT.
Wireless flood detector «CN-Flood-Mini»
Screw 3-3х30.016
CR2450 lithium power supply battery
Wireless flood detector «CN-Flood-Mini». Installation Guide
1 pc.
1 pc.
2 pcs.
1 copy
4 The Detector Design
The Detector comprises the base with the openable mounting
hole (7) printed circuit board (1) (PCB) installed on the cover. The PCB
comprises the following elements: main power supply battery holder
plate (2), «RESET» contacts (3), backup power supply battery holder
plate (4), sensor terminals (5), tamper contacts (6).
Figure 1 – The Detector Design
5 Indication
The Detector has the following indication modes:
- «Binding» procedure LED indication (procedure of logging in the CP);
- «Identification» indication mode – lights up by the relevant command
from CP and remains active during 15 min or until the case is opened;
- LED indication of the Detector state is activated after the Detector
cover is closed and remains active during 15 min under conditions:
- other LED indication types absence;
- alarm «Tamper» message is not generated during this time;
- absence of command from the CP disabling the Detector state
indication.
LED indicator modes are listed in the Table 3.
Table 3
The Detector State
LED Indication
Note
Binding procedure
finished
LED lighting red for
2 – 3 sec
«Binding» mode
LED blinking green
The Detector logging in
the CP
«Identification»
Alternate LED red and
green alternate blinking
on command from the
CP
«Alarm»
Single-shot LED lights up
red for 4 sec
State indication is on
and «Identification»
indication is off
Radio communication
quality appraising
See sect. «Radio communication quality appraising»
«Normal»
Indication is off
6 Binding with the CP
«Binding» mode is used for logging the Detector in the CP and service
information exchange.
6.1 Prepare the CP in accordance with CP reference guide.
6.2 Initially install the backup power supply battery to the holder
plate (4) on the PCB, thereupon install the main power supply battery to
the holder plate (2) (or remove the insulators with installed batteries).
6.3 Periodical LED indicator blinking green is evidence of binding
process.
6.4 In case of mentioned above LED indication absence, short-circuit
«RESET» terminals for 2 – 3 sec.
6.5 The time limit for the binding process of the Detector is 100 sec.
To restart the binding procedure, short-circuit «RESET» terminals for
2 – 3 sec.
7 Communication Quality Appraising
7.1 To apprise the radio communication quality it is necessary to
act as follows:
- place initially backup and then main power supply batteries to the
correspondent holder plates (or remove the insulators with installed
batteries);
- set the Detector on the assumed place of installation;
- push and then release case tamper.
7.2 After case tamper releasing the Detector generates case
tamper alarm message, transmits it via radio communication channel
and represents communication quality with CP by LED indication in
accordance with the Table 4.
Table 4
LED Indication
Radio
communication
quality appraisal
Recommendations
Color
Mode
Green
Three blinks
Excellent
Install the Detector on this
place
Green
Two blinks
Good
Green
One blink
Communication
established
Choose another place
for installation or use a
repeater*)
Red
Four blinks
No
communication
*) –
CN-Repeater
Installation Guide
а) Base
b) PCB installed on the cover
1
7
2
3
4
6
5
5
RESET
the main
the backup
