Zennio FlatSensato User manual

FlatSensato
KNX Humidity and Temperature sensor
for flush mounting
ZS-FSEN
USER MANUAL
Application Program Version: [1.0]
User Manual Version: [1.0]_a
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CONTENT
Content.......................................................................................................................................... 2
1 Introduction ............................................................................................................................. 3
1.1 Flat Sensato .................................................................................................................... 3
1.2 Installation...................................................................................................................... 4
2 Configuration ........................................................................................................................... 6
2.1 General ........................................................................................................................... 6
2.2 Temperature................................................................................................................... 8
2.3 Humidity ....................................................................................................................... 11
2.4 Dew Point ..................................................................................................................... 14
2.5 Notification LED............................................................................................................ 16
2.5.1 Configuration........................................................................................................ 16
2.6 Inputs............................................................................................................................ 18
2.6.1 Binary Inputs......................................................................................................... 19
2.6.2 Temperature Probe .............................................................................................. 19
2.6.3 Motion Detector................................................................................................... 19
2.7 Logic Functions ............................................................................................................. 20
ANNEX I. Dew Point Theory......................................................................................................... 21
ANNEX II. Communication Objects.............................................................................................. 22

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1INTRODUCTION
1.1 FLAT SENSATO
Flat Sensato is a sensor with a flat design to measure ambient temperature, relative
humidity and to calculate dew point for the sending of humidity, temperature and
condensation.
The most outstanding features and functions of the device are:
Measurement of dry air temperature.
Measurement of relative air humidity indoor.
Measurement of dew point temperature.
Alarms of maximum and minimum temperature and relative humidity.
Condensation monitoring on surfaces.
Relative humidity LED notification.
2 analogue/digital configurable inputs.
10 customisable, multi-operation logic functions
Heartbeat or periodical “still-alive” notification.

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1.2 INSTALLATION
To install the device, it is first necessary to mount the metallic plate into a square/round
standard appliance box through the suitable screws. Next, Flat Sensato is connected to
the KNX bus through the corresponding terminal on the rear side of the device, and
then the input terminal is as well connected to the rear of the device.
Once the input terminal and the KNX terminal are connected, the device can be easily
mounted on the metallic plate by the action of the fixing clips.
Finally, it is advisable to check that the device is properly installed, and that only its
profile becomes visible from above, from below and from both sides (the metallic plate
should be completely hidden).
Figure 2 shows the connection outline of the device:
1. Humidity notification LED
2. KNX connector
3. Sensor
4. Programming LED
5. Programming Button
6. Inputs connector
7. Fixing clips
Figure 2. Schematic diagram
1 2 3
Figure 1. Installation
1
3
2
7
5
4
6

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This device does not need any external supply, as it is powered through the KNX bus.
The programming button (5) can be pressed with the help of a thin screw to set the
device into the Programming Mode. After a short press, the programming LED (4) will
light in red. Note that if this button is held while plugging the device into the KNX bus,
the device will enter the Safe Mode. The LED will then blink in red.
For detailed information about the technical features of the device, as well as on
security and installation procedures, please refer to the device Datasheet, bundled
within the original packaging of the device and also available at http://www.zennio.com.

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2CONFIGURATION
After importing the corresponding database in ETS and adding the device into the
topology of the desired project, the configuration process begins by entering the
Parameters tab of the device.
2.1 GENERAL
From the “General” tab enabling additional functions available for the device is
possible.
ETS PARAMETERISATION
Figure 3 General settings
Inputs: enables or disables the “Inputs” tab in the tree on the left, depending
on whether the device will or will not be connected any external accessories.
See section 2.6 for details.
Logic Functions: enables or disables the “Logic Functions” tab in the tree on
the left, depending on whether this functionality is required or not. See section
2.7 for details.
Notification LED: enables or disables the “Notification LED” tab in the tree
on the left, depending on whether this functionality is required or not. See
section 2.5 for details.
Heartbeat (Periodical Alive Notification): this parameter lets the integrator
incorporate one-bit object to the project (“[Heartbeat]Object to Send ‘1’”)

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that will be sent periodically with value “1” to notify that the device is still
working (still alive).
Figure 4. Heartbeat (Periodical Alive Notification)
Note: The first sending after download or bus failure takes place with a delay
of up to 255 seconds, to prevent bus overload. The following sendings match
the period set.

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2.2 TEMPERATURE
Flat Sensato is capable of measure and monitor temperature measurements, as well
as send these values to the bus and report high / low temperature situations. To
that end, it is necessary to configure a set of parameters.
ETS PARAMETERISATION
The object “[Temp] Current Temperature” (2 bytes) will appear by default. This object
will report the current value of the temperature periodically or after a certain
increment/decrement, according to the parameter configuration.
Figure 5. Temperature - Configuration
Temperature Sensor Calibration: defines an offset to be applied to the
measurement received from the probe to correct deviations due to external
factors. The offset should be in the range [-50, 50] tenths of a degree.
Temperature Sending Period: sets every how much time the value of the
current temperature should be sent to the bus (through “[Temp] Current
Temperature”), in the range 0 – 255 tens of second. The value “0” leaves this
periodical sending disabled.
Send with a Temperature Change: defines a threshold (in the range 0 to
255 tenths of a degree) so that whenever a new reading of the current
temperature is found to differ (from the last value sent to the bus) more than
such threshold, an extra sending will take place. The value “0” leaves this
sending with a temperature change disabled.

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Temperature Protection: drop-down list with the following options:
No: no temperature protection is required.
Overheating: overheating protection is required. Two extra parameters will
come up:
Overheating Temp.: maximum temperature permitted, in the range -30
to 125 ºC. Temperature readings greater than this will be considered
overheat, and therefore a “1” will be periodically sent through object
“[Temp] Overheat”. Once the overheat is over, a “0” will be sent (once).
Hysteresis: dead band or threshold (in the range 1 to 200 tenths of a
degree; the default is 20 tenths of a degree –i.e., twenty degrees–)
around the overheat temperature defined above. This dead band
prevents the device from sending the overheat alarm and no-alarm over
and over when the current temperature keeps fluctuating around the
overheat limit (T): once the overheat alarm has been triggered, the no-
alarm will not be sent until the current temperature is lower than that T
minus the hysteresis. After that, if the current temperature reaches T
again, the alarm will be re-sent.
Overcooling: overcooling protection is required. Two extra parameters
(analogous to the above two) will come up:
Overcooling Temp.: minimum temperature permitted, in the range -30
to 125 ºC. Temperature readings lower than this will be considered
overcool, and therefore a “1” will be periodically sent through object
“[Temp] Overcool”. After the overcool is over, a “0” will be sent (once).
Hysteresis: dead band or threshold (in the range 1 to 200 tenths of a
degree; the default is 20 tenths of a degree) around the overcooling
temperature. As for the overheat, once the alarm has been triggered, the
no-alarm will not be sent until the current temperature is greater than T
plus the hysteresis. After that, if the current temperature reaches T
again, the alarm will be re-sent.
Overheating and Overcooling: both overheating and overcooling protection
are required. The following three parameters will come up:

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Overheating Temp.
Overcooling Temp.
Hysteresis.
The three of them are analogous to those already explained separately.