Zennio KNX KCI 4 S0 User manual

KCI 4 S0
KNX Consumption Interface
KNX-S0 Interface with 4 Inputs
ZRX-KCI4S0
USER MANUAL
Application program version: [2.0]
User manual edition: [2.0]_a
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CONTENTS
Contents ........................................................................................................................................ 2
Document Updates ....................................................................................................................... 3
1 Introduction .......................................................................................................................... 4
1.1 KCI 4 S0.......................................................................................................................... 4
1.2 Installation..................................................................................................................... 5
1.3 Consumption Data Resets after a Download ................................................................ 7
1.4 Setting the Time of Day................................................................................................. 7
2 Configuration......................................................................................................................... 8
2.1 General.......................................................................................................................... 8
2.2 Input S0x...................................................................................................................... 11
2.2.1 Configuration ....................................................................................................... 11
2.2.2 Total Register ....................................................................................................... 13
2.2.3 Partial Registers ................................................................................................... 17
2.2.4 Electric Power (or Water/Gas Flow) .................................................................... 18
2.2.5 Tariff ..................................................................................................................... 22
2.2.6 Notifications......................................................................................................... 23
2.2.7 Alarms .................................................................................................................. 25
2.3 Initialisation and Power Loss....................................................................................... 29
2.4 Logic Functions............................................................................................................ 31
ANNEX I: Power Calculation ........................................................................................................ 32
ANNEX II. Communication Objects.............................................................................................. 35

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DOCUMENT UPDATES
Version Changes Page(s)
[2.0]_a
Changes in the application program:
•Date and time-of-day objects.
•Additional consumption registers (one total
register plus three partial registers).
•Per-register calculation of cost and equivalent
CO2 emissions.
•Per-tariff consumption calculation.
•Periodical reset of partial registers.
•Water/gas flow, electric power and pulse
monitoring alarms.
•Notifications upon exceedance of specific
consumption values.
•Inputs lock and register reading on request.
•Ten logic functions.
•Possibility of maintaining the previous
consumption registers after download.
-
Major revision of the whole document due to the new
functionality. -
[1.1]_a Changes in the application program:
•Optimisation of the S0-pulse count algorithm. -

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1INTRODUCTION
1.1 KCI 4 S0
KCI 4 S0 from Zennio is an S0 to KNX interface that makes it possible to integrate S0-
pulse generators into the KNX installation. Specifically, up to four S0-pulse
generators can be connected independently to the inputs of KCI 4 S0, which will
interpret these S0 pulses as energy, water or gas consumption measurements,
depending on the external S0-compliant meter that has been connected.
Therefore, KCI 4 S0 brings the possibility of notifying other KNX devices about the
consumption levels measured by external S0-pulse generators. In practice, KCI may
still manage flows or volumes of any other type (not only electric power, water and gas)
as long as they are measured by a pulse generator (even non-S0 pulses can be
recognised). However this is not guaranteed – previous testing is encouraged.
The most outstanding features of KCI 4 S0 are:
4x inputs for monitoring up to four S0-pulse generators.
Possibility of disabling each input independently.
Up to four registersper input (one total and three partial).
Customisable pulse frequency, i.e., possibility of setting how many pulses
are expected per unit consumption.
Possibility of sending the energy, water or gas consumption values to the
KNX bus both periodically or on value changes.
Calculation of the electric power and of the water/gas flow rate, with the
possibility of sending them to the KNX bus both periodically or on value
changes.
Alarms for power / flow excess and low power / flow.
Per-tariff calculation of cost and CO2 equivalent emissions, for up to two
registers per input.

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Calculation of cost and CO2 equivalent emissions for each register.
Pulse and consumption monitoring alarms.
Objects to request the accumulated consumption values.
Possibility of customising the initial consumption value and of maintaining
the accumulated consumption after a download.
Auxiliary battery pack to ensure the pulse count even in the absence of bus
power.
LEDs and communication objects to indicate low or empty battery.
10 customisable, multi-operation logic functions.
1.2 INSTALLATION
KCI 4 S0 connects to the KNX bus through the on-board KNX connector. Once the
device is provided with power from the KNX bus, both the individual address and the
associated application program can be downloaded.
Figure 1: KCI 4 S0 - Element Diagram.
The main elements of the device are described next.
1
2
3
4
5
6
7
8
1. Battery Holder.
2. EMPTY Battery LED Indicator.
3. LOW Battery LED Indicator.
4. Prog./Test Button.
5. Prog./Test LED.
6. Input Indicator LED.
7. Input Connectors.
8. KNX Connector.

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Test/Prog. Pushbutton (4): a short press on this button sets the device into
the programming mode, making the associated LED (5) light in red.
Note: if this button is held while plugging the device into the KNX bus, the
device will enter into safe mode. In such case, the LED will blink in red.
Input Connectors (7): slots for the connection of the input lines from the
pulse generators. Whenever a pulse is received through one of the inputs, the
associated LED (6) will flash briefly.
Battery Holder (1): host for the two CR2032 batteries (2 x 3V) that will
provide power in the absence of the KNX bus.
Low-Battery Indicator (3): LED indicator that will blink in red if the battery
level is weak. It is advisable to change the batteries when this happens.
Empty-Battery Indicator (2): LED indicator that will blink in red if the battery
level is critically low. It is required to change the batteries when this happens.
Notes regarding the low/empty battery indicators:
The two LED indicators are mutually exclusive. Once the empty-battery
indicator turns on, the low-battery indicator will turn off.
In the absence of KNX bus power, the device will keep trying to count pulses
even in the empty-battery state. However, once under the low-battery level,
an accurate behaviour cannot be guaranteed.
To extend the battery life, the empty/low battery indicators only blink in
presence of KNX bus power. In other words, it is once the bus recovers
from the power failure that KCI 4 S0 will resume the battery level check.
To get detailed information about the technical features of the device, as well as on the
installation and security procedures, please refer to the corresponding Datasheet,
bundled with the original package of the device and also available at www.zennio.com.

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1.3 CONSUMPTION DATA RESETS AFTER A DOWNLOAD
It is important to bear in mind that, by default, reprogramming the device from ETS
(through either partial or complete downloads) clears the consumption variables and
therefore any data accumulated so far on both partial and total registers (see sections
2.2.2 and 2.2.3).
Should these values need to be resumed after reprograming the device, the integrator
should activate in ETS, prior to the download, the option to maintain the current value
of such registers, or alternatively set an initial value for the energy or volume.
1.4 SETTING THE TIME OF DAY
To make use of calendar-dependent functions, such as periodical registers or the
register initial dates, an external clock (such as the one in Z41 from Zennio) should be
present in the installation in order to synchronise the KCI internal clock.
To that end, KCI will request the time of day during the start-up. Up to four read
requests will be sent (after a customisable, initial delay) to the KNX bus. Specific date
and time of day objects are provided for this.
Notes:
The time count is performed internally by KCI. However, it must be notified
(through external events) about any time adjustments in order to ensure the
synchronisation of the periodical timing of the registers .
It is advisable to resynchronise the internal time count periodically to prevent
precision loss after prolonged operation. Therefore, KCI sends a time request
to the KNX bus every 15 minutes.

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2CONFIGURATION
2.1 GENERAL
KCI 4 S0 incorporates four input channels for connecting up to four S0-pulse
generators. Which ones will be in use is the first thing to configure.
On the other hand, two one-bit alarm objects will be available in the project by default,
besides of Date and Time of Day objects (see section 1.4). Their behaviour will be
analogous to that of the on-board LED indicators that inform, respectively, about low
battery and empty battery. While any of these LEDs remains on, the corresponding
object will be sent to the bus with the value “1” every 15 minutes. Once the alarm
situation is over, the LED turns off and the object is sent once with the value “0”.
Please, refer to section 1.2 for more details about the battery warnings.
Besides, additional objects can be enabled to request global consumption data or to
lock the inputs.
Finally, ten customisable, multi-operation logic functions can be enabled too.
ETS PARAMETERISATION
After importing the corresponding database in ETS and adding the device into the
topology of the desired project, the configuration process begins by right-clicking into
the device and selecting Edit parameters.
The “General” parameter screen is the only shown by default.

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Figure 2: General.
Four checkboxes (one per input channel) let the integrator select which input channels
will be in use. Additional entries will be included in the tab menu on the left depending
on the number of active inputs.
The options for each of the inputs are detailed in the next sections.
Besides, additional parameters are available to enable or disable the following
communication objects:
Object for Global Data Request: enables the “Global Data Request” one-
bit object, which can be sent the value “1” to request the global consumption
values from all the input channels.
Object for Global Disable: enables the “Global Disable” one-bit object,
which by default has the value “1”. When it receives the value “0”, KCI
interrupts all actions, including the pulse count in all inputs. Only data
requests will be responded.
Initial Delay: time between 1 and 255 seconds the device will wait after the
start-up before sending the date and time requests (see section 1.4).
Logic Functions: enables the Logic Functions configuration screen (see
section 2.4).
On the other hand, the following objects are available in the project topology at any
time:

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“Date”: its value will become periodically updated according to the internal
date of the device. It can also receive values from an external clock for
synchronisation purposes.
“Time of Day”: its value will become periodically updated according to the
internal time of the device. It can also receive values from an external clock
for synchronisation purposes.
“Alarm: Low Battery”: one-bit object that will send a “1” every 15 minutes if
the battery level is low, and a “0” (only once) if this no longer happens. This
object is analogous to the low-battery LED indicator.
“Alarm: Empty Battery”: one-bit object that will send a “1” every 15 minutes
if the battery level is critically low (or zero), and a “0” (only once) if this no
longer happens. This object is analogous to the empty-battery LED indicator.
As with the LED indicators, the two alarm objects are mutually exclusive. Once the
level of the battery becomes empty, KCI 4 S0 will start sending the empty-battery
object and will stop sending the low-battery object (which will be then sent with the
value “0” –only once–).
Figure 3: Battery Alarms
t
1
t
2
Battery
Time
t
1
: Low-battery alarm activation.
t
2: Low-battery alarm deactivation +
Empty-battery alarm activation.