Satel KNX-SA41 User manual

KNX-SA41 / KNXSA24
Universal Switch Actuator
Firmware version 1.01 knx-sa_en 10/19
SATEL sp. z o.o. • ul. Budowlanych 66 • 80-298 Gdańsk • POLAND
tel. [phone]
www.satel.eu

IMPORTANT
The device should be installed by qualified personnel.
Prior to installation, please read carefully this manual in order to avoid mistakes that can lead
to malfunction or even damage to the equipment.
Changes, modifications or repairs not authorized by the manufacturer shall void your rights
under the warranty.
SATEL aims to continually improve the quality of its products, which may result in changes in
their technical specifications and software. Current information about the changes being
introduced is available on our website.
Please visit us at:
http://www.satel.eu
The declaration of conformity may be consulted at www.satel.eu/ce
The following symbols may be used in this manual:
- note;
- caution.

SATEL KNX-SA41 • KNX-SA24 1
CONTENTS
1. Features ...........................................................................................................................2
2. Description........................................................................................................................3
2.1 Electric diagram of relay outputs ................................................................................................3
2.2 Enclosure ................................................................................................................................... 4
3. Installation ........................................................................................................................5
3.1 Wiring diagram ........................................................................................................................... 5
4. Configuring the module.....................................................................................................6
4.1 Function priorities ....................................................................................................................... 6
4.2 Configuring global parameters ...................................................................................................7
4.2.1 Safety .................................................................................................................................................8
4.3 Configuring channels.................................................................................................................. 9
4.3.1 Logic.................................................................................................................................................11
4.3.2 Time .................................................................................................................................................12
4.3.3 Scene 1-bit.......................................................................................................................................18
4.3.4 Scene ...............................................................................................................................................19
4.3.5 Threshold .........................................................................................................................................20
4.3.6 State forcing.....................................................................................................................................22
4.4 Communication objects ............................................................................................................ 23
4.4.1 Global objects ..................................................................................................................................23
4.4.2 Channel objects ...............................................................................................................................24
4.5 Restoring the module factory default settings .......................................................................... 28
5. Specifications .................................................................................................................28
5.1 Maximum output loads ............................................................................................................. 29
5.2 Maximum output loads for lighting............................................................................................ 29

2 KNX-SA41 • KNX-SA24 SATEL
The KNX-SA41 / KNX-SA24 module is an universal switch actuator, which makes it possible
to control electrical devices (lighting, sirens, ventilation). The module constitutes an interface
between the electrical devices and the KNX system. Signals received from various sensors
and other control devices are converted, via the module, into concrete actions, such as
switching on/off light or fan.
The modules differ by the number of outputs, the KNX-SA41 having four and the
KNX-SA24 eight relay outputs (see “Electric diagram of relay outputs”).
Each output in the module corresponds to one logical channel. If the module is
deenergized, the relays are set as NO (normally open). After energizing the module,
polarity of the relays will be set as defined for the given channel. A change of the
physical state of relays (outputs) takes place by adjusting the channel logic state to the
defined polarity. The whole functionality described in this manual refers to the logic
state and is identical in both modules.
1. Features
Communication with KNX bus via integrated bus connector.
Feedback on the state of module and individual channels.
Behavior of each channel can be defined in case of KNX bus voltage loss and recovery.
Behavior of each channel can be defined in case of mains voltage recovery.
Time functions (flashing, on/off delay, staircase light function with advance warning option
and operating time change).
Logic functions (AND, NAND, OR, NOR, XOR, XNOR).
Threshold value function.
Safety functions.
State forcing functions.
Scenes for each of the channels can be called up by using 1- and 8-bit commands.
Manual control of each channel state by using buttons situated on enclosure.
Status LEDs for each channel.
Mounted in distribution boxes, on DIN rail (35 mm).
Module configuration using ETS software.
Capability of switching between resistive, inductive and capacitive loads.

SATEL KNX-SA41 • KNX-SA24 3
2. Description
load circuit terminals for connecting loads (2 terminals per channel).
green LEDs indicating the channel state. One channel state LED is assigned to each
channel:
ON – channel enabled,
OFF – channel disabled.
buttons to manually change the channel state. One ON/OFF button is assigned to each
channel.
The manual change of channel state is monitored by the module. The values of
communication objects responsible for storing information about the current state of
individual channels are systematically updated, according to the changes made.
The buttons are also used to restore the module factory default settings (see
“Restoring the module factory default settings”).
red LED – is ON when physical address is being set using the ETS program. Setting the
address may be activated remotely from the ETS program or manually, using the
button on the enclosure.
programming button (used when setting the physical address).
terminal to connect KNX bus.
mains supply terminals.
2.1 Electric diagram of relay outputs
The KNX-SA41 and KNX-SA24 modules differ by the number of independent circuits and the
number of relays per each of these circuits. The KNX-SA41 has 4 independent circuits with 1
relay per circuit, while the KNX-SA24 has 2 independent circuits with 4 relays per circuit
(Fig. 2).

4 KNX-SA41 • KNX-SA24 SATEL
Information on what is the number of circuits and relays in the module is contained in
the module symbols (KNX-SA41/KNX-SA24). The first digit in the symbol means the
number of circuits in the module, and the second – the number of relays per one
circuit.
2.2 Enclosure
PCB of the KNX SA41 and KNX SA24 modules is mounted in enclosures, which have
identical shape and dimensions. The enclosures only differ by their panels for manual control
of channel state. In the figure 3, the enclosure dimensions are presented based on the
example of KNX-SA41 module. The module occupies 4 units on the DIN rail (35 mm).

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3. Installation
Disconnect power before making any electrical connections.
The module is designed for indoor installation, in spaces with normal air humidity, e.g. in
distribution boxes on 35 mm DIN rail.
1. Mount the module on mounting rail.
2. Use the connecting terminal to connect KNX bus cable to the module.
3. Connect the loads to load circuit terminals.
4. Connect module power to N and L terminals.
All connections should be made in accordance with the wiring diagram for the given
module (see “Wiring diagram”).
5. Connect a computer running ETS program to the KNX bus and configure the module.
To configure the module, you will require a computer running the ETS program version
5.5 or newer, provided with USB or Ethernet (TCP/IP) connector. The SATEL ETS
application file, which can be downloaded from www.satel.eu/ets, must be imported
into the program.
For detailed information on how to configure the module, refer to section “Configuring the
module”.
3.1 Wiring diagram

6 KNX-SA41 • KNX-SA24 SATEL
4. Configuring the module
Working parameters of the module are defined in the ETS program (version 5.5 or higher).
The tabs for defining individual parameters are built dynamically. Depending on the selected
options, further parameters may be displayed in the tabs or further tabs may be displayed
when defining parameters. Moving the cursor over the selected parameter will display
a tooltip with default value or value range for that parameter.
The module has two groups of configuration parameters. The first group includes global
parameters which define general functionality of the module, but have no immediate effect on
individual channels (see “Configuring global parameters”). The second group includes
parameters assigned to the channel. These parameters have direct effect on how the
channel will react to functions activated in the module, how its state will change (see
“Configuring channels”).
4.1 Function priorities
The order in which functions can change the module channel state depends on the priority
the given function has (Fig. 5). The highest priority functions are safety functions and state
forcing functions. Priorities of the other functions have been set in the following order: time
functions, logic functions, and switching functions, where the switching functions have the
lowest priority (see the diagram below). A higher priority function can change the channel
state that has been set by a lower priority function.
The lower priority functions cannot control the channel state as long as a higher
priority function is active.
Example. If the “Safety priority 1” is activated when the “Flashing” time function is running,
the time function will be terminated, and the channel state will be set by the safety function.
However, in the event the channel state has been set by the “Safety priority 1”, the “Flashing”
time function cannot change the channel state.

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4.2 Configuring global parameters
Main operating parameters of the module are defined in the “Global” tab, which is presented
below.

8 KNX-SA41 • KNX-SA24 SATEL
Startup delay – time period by which the module startup will be delayed after power-on.
Value 00:00:00 will disable the delay.
During the delay period the telegram handling is stopped and the channels do not change
their state. The module sends no telegrams to the KNX bus. After the delay expires, the
telegrams are sent and the state of channels is set according to the parameters defined. If
any telegrams are received from communication objects during the delay period, they will
be stored. Replies to these telegrams are sent after expiry of the delay time.
The startup delay may be used to reduce load on the KNX bus and supply circuit after
power-on.
Interval of cyclic device status sending – frequency with which a telegram is sent to the
bus by the “Device operation status” communication object with the module status
information. Information contained in the telegram makes it possible to monitor the module
operation by other devices on the KNX bus. Value 00:00:00 disables the sending.
Sending telegrams may be enabled either permanently, for continuous monitoring of
the module operation, or during testing only. If you do not want to load the bus with an
excessive number of telegrams, you can set the sending cycle time at the highest
possible value.
Central function – enables / disables the central function in the module (Disable / Enable).
Enabling the function will enable the “Switch function” communication object, which makes
it possible to control all the module channels. Each channel can respond in different way to
the state change of that object. Reaction of the channel is defined by means of the
“Reaction on central” parameter.
Safety– enables / disables the safety function in the module (Disable / Enable). Enabling the
function will enable the “Safety priority 1” communication object and display the “Safety”
tab.
4.2.1 Safety
You can define 3 “Safety priority n (n = 1, 2, 3)” objects. Reaction to a change of safety object
state can be defined for each channel.
Remember that safety functions have the highest priority. The channel state set by
such a function can only be changed by another safety function or state forcing
function, provided these functions will have higher priority (see “Function priorities”).
You can define the monitoring time for each object. If a telegram with value opposite to the
activating value is received during the monitoring time, the time will run from the beginning
(reset). If no telegram is received during the monitoring time, the safety object will be
activated.

SATEL KNX-SA41 • KNX-SA24 9
Description of parameters
Number of safety functions – the number of safety functions that can be activated in the
module (by default = 1, maximum = 3). Selecting values 2 and 3 will display next “Trigger
for safety telegram” and “Monitoring time” parameters to enable you to define the functions
2 and 3. This will enable the “Safety priority 2” and “Safety priority 3” communication
objects.
Trigger for safety telegram 1/2/3 – value of the telegram that triggers the safety function
1/2/3:
off – 0 = activates function, 1 = resets monitoring time.
on – 1 = activates function, 0 = resets monitoring time.
Monitoring time 1 – time of monitoring the safety object 1/2/3. With disabled monitoring
(value in the field set at 00:00:00), the safety function will only be activated after receiving
the triggering telegram.
Make sure that the monitoring time is at least three times longer (as good practice
dictates) than the time defined for cyclically sending telegrams by the sensor. This
prevents the safety function from being triggered, when the triggering telegram fails to
be received in time because of the excessive bus load.
You can define channel reaction to the safety function using the “Reaction on safety 1/2/3”
parameter.
4.3 Configuring channels
How a channel will change its status depends on the parameters defined for the channel.
Each channel of the module has the same group of parameters. How to define the
parameters has been discussed based on the example of channel A. Presented below is the
“General” tab for defining the parameters.

10 KNX-SA41 • KNX-SA24 SATEL
Polarity – polarity defines how the physical state of the relay will change in relation to the
logic state of the channel:
NO – 0 = relay open, 1 = relay closed,
NC – 1= relay open =, 0= relay closed.
Physical polarity of relays for each channel in the module can be set at NO (normally
open) or NC (normally closed). When the module power is off, the relays in the module are
set as NO. After power-on, physical polarity of relays is set according to the value defined
by the “Polarity” parameter.
Reaction to KNX bus failure – channel reaction to the bus power supply loss (off / on / last
value set from bus [the channel will be switched to the state set by the last telegram from
the bus]).
Reaction to KNX bus recovery – channel reaction to the bus power recovery (off / on / last
value set from bus [the channel will be switched to the state set by the last telegram from
the bus]).
Reaction to supply mains recovery – channel reaction to the mains supply recovery (off /
on / last value set from bus [the channel will be switched to the state set by the last
telegram from the bus]).
The parameter defines initial state of the channel, after starting the module. Restart of
the device is also treated as the supply voltage loss. It should be remembered that
each change of settings in the ETS program will force restart of the module.
Reaction on central – channel reaction to a change of state of the “Switch function”
communication object (no reaction / as central object value [the channel will be switched to
the state corresponding to the value saved in the communication object] / inversed central
object value [the channel will be switched to the state opposite to the value saved in the
communication object]).

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After the central function is off, the channel will remain in the set state until the state is
changed by another telegram from the bus.
Reaction on safety 1/2/3 – channel reaction to a change of state of the safety object 1/2/3.
For each of the three definable safety objects you can set a different channel reaction (no
reaction, on, off).
After the safety function is off, the channel remains in the set state until the state is
changed by another telegram from the bus.
Interval of cyclic channel state sending – frequency with which a telegram with information
on the channel state is sent to the bus. The telegram is sent by the “Channel status”
communication object. Information contained in the telegram allows the channel state to
be controlled by other devices on the KNX bus. Value 00:00:00 will disable the cyclic
sending of information.
Logic – enable / disable the logic functions in the channel (Disable / Enable). Enabling the
function will enable the “Logic 1” communication object and display the “Logic” tab in the
program.
Time – enable / disable the time functions for the channel (Disable / Enable). Enabling the
function will enable the “Disable time functions” communication object and display the
“Time” tab in the program.
Scene 1-bit – enable / disable the option to define the 1-bit scenes for the channel (Disable /
Enable). Enabling the 1-bit scenes will enable the “Call scene 1-bit” communication object
and display the “Scene 1-bit” tab in the program.
Scene – enable / disable the possibility to define scenes for the channel (Disable / Enable).
Enabling the scenes will enable the “Scene” communication object and display the “Scene”
tab in the program.
Threshold – enable / disable the threshold function in the channel (Disable / Enable).
Enabling the function will enable the “Input for threshold value” communication object and
display the “Threshold” tab in the program.
State forcing – enable / disable the state forcing function in the channel (Disable / Enable).
Enabling the function will enable the “Forced state 1” and “Forced state 2” communication
objects and display the “State forcing” tab in the program.
4.3.1 Logic
Logic functions allow the channel to be controlled by means of multiple communication
objects. 3 logical links can be defined for each channel. Using the available AND, NAND, OR,
NOR, XOR, XNOR logic functions, you can create a combinatorial function, in which the
signal received from the “Switch” switching function (see “Function priorities”) will be linked to
the signal from the other communication objects: “Logic 1”, “Logic 2”, “Logic 3” (where: X -
channel symbol). The channel state will be the result of defined connections (see the figure
below).

12 KNX-SA41 • KNX-SA24 SATEL
Description of parameters
Number of logic functions – the number of logic functions used to control the channel state
(by default = 1, maximum = 3). Selecting values 2 and 3 will display further fields in the tab
to define the logic functions 2 and 3. This will enable the “Logic 2” and “Logic 3”
communication objects.
Logic 1/2/3: function – type of function (AND / NAND / OR / NOR / XOR / XNOR).
Logic 1/2/3: initial value – initial value for the “Logic 1/2/3” communication object (off / on /
last value set from bus [the channel will be switched to the state set by the last telegram
from the bus]).
4.3.2 Time
3 time functions are available in the module:
Staircase light.
ON/OFF delay.
Flashing.
The “Disable time functions” communication object, which is enabled by enabling the time
functions, makes it possible to disable these functions in the channel. When the object is set
to “1”, running the time functions in the channel is stopped. The channel becomes off and its
state can only be changed by other functions. The channel state can be changed by the time
function only after the object is set to “0”.
Staircase light
You can define the following parameters:
the time TON during which the channel (and the staircase lighting) will be on (Fig. 7-I).
With the “Duration set from bus” option enabled, the channel ON time can be changed
from the bus using the “Staircase duration” communication object.
warning against the coming switch-off in the form of:
special “Staircase warning” group object,
momentary switch-off/ switch-on of the channel,
both methods at the same time,
warning duration TW, which defines how long the warning will be activated before the
channel is switched off (Fig. 7-I). If the time TWis longer than the time TON, switching on
the channel will activate the warning, and the channel will be ON for the time TW
(Fig. 7-II).

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number of telegrams LTthat can prolong the channel ON time. If the channel is switched
off, each successive telegram will extend the channel ON time by the time TON (Fig. 8-I).
Figures 8-II & 8-III show how the channel will react to telegrams when it is switched on.

14 KNX-SA41 • KNX-SA24 SATEL
ON/OFF delay
The time which is to elapse from receiving the control telegram to changing the channel
state. If, during the delay countdown, the channel receives another telegram with ON/OFF
value, the delay time will run from the beginning. The figure 9 shows how the function
operates (where: TD-ON = ON delay time, TD-OFF = OFF delay time).

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Flashing
The flashing function enables the channel to be defined so as to cyclically change its state
(Fig. 10). The following parameters can be defined in the function:
value of the telegram which triggers the function,
number of cycles (flashes) LC,
time during which the channel is to remain on TON and off TOFF,
state SFto which the channel is to be changed after the function execution is completed.

16 KNX-SA41 • KNX-SA24 SATEL
Description of parameters
Function – you can select from:
Staircase – enables the channel to be on for defined time (see “Staircase”).
On/Off delay – defines the time which is to elapse from receiving the control telegram to
changing the channel state (see “ON/OFF delay”).
Flashing – enables the channel state to be changed cyclically (see “Flashing”).
Different parameters are displayed for each time function.
Staircase
Control – value of the control telegram:
ON=1; OFF=0 – telegram with the value “1” switches on, “0” switches off the channel.
ON=0; OFF=1 – telegram with value “0” switches on, “1” switches off the channel.
ON=1; OFF not possible – telegram with value “1” switches on, switching off the channel
is impossible.
ON=0; OFF not possible – telegram with value “0” switches on, switching off the channel
is impossible.
Default duration – time during which the channel will be on (00:00:00 - 18:12:15
[hh:mm:ss]).
Maximum number of repeats – the number of telegrams which can extend the time during
which the channel will be on (0 – 100 telegrams).
Duration set from bus – selecting the “Yes” option will enable the “Staircase duration”
communication object, which allows the “Staircase” function duration to be changed from
the bus. The following parameter will be displayed:
Duration value – you can select how the initial value is to be set:
default – value defined in the “Default duration” field.
last set from bus – value that was set by the last telegram from the bus. If the object
value has not been changed by a telegram from the bus, default value from the
“Default duration” field will be set.
Warning method – how the device is to warn the user that the channel will be switched off
(staircase lighting will be switched off) soon:
none – the channel will be switched off without warning.
via object – warning by means of the “Staircase duration” special communication object. If
the object is set to “1”, warning will be activated. When the warning time elapses, the
object is set to “0”.

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via output flashing – warning by changing the channel state (off/on).
via object and output flashing – warning using the two methods at the same time.
Selecting any option other than “none” will display the following field:
Warning duration – duration of the warning that the channel will be switched off soon.
If the value entered in the field is higher than 0, the staircase lighting duration will be
extended by this value.
ON/OFF delay
On delay – time that must elapse from receiving the telegram with “switch on” value to switch
on the channel (00:00:00 - 18:12:15 [hh:mm:ss]).
Off delay – time that must elapse from receiving the telegram with “switch off” value to switch
off the channel (00:00:00 - 18:12:15 [hh:mm:ss]).
Flashing
Trigger – telegram value that must be received by the “Switch” object so as to activate the
flashing function for the channel:
on & off – telegrams with value “1” or “0” can activate the flashing function.
on – telegram with value “1” will activate the flashing function, telegram with value “0” will
end it.
off – telegram with value “0” will activate the flashing function, telegram with value “1” will
end it.
On duration – time for which the channel will be on during the cycle (00:00:00 - 18:12:15
[hh:mm:ss]).
Off duration – time for which the channel will be off during the cycle (00:00:00 - 18:12:15
[hh:mm:ss]).
Number of cycles – number of cycles (flashes) during which the channel will be switched
from one state to the other (1-100).

18 KNX-SA41 • KNX-SA24 SATEL
When defining the number of cycles you must keep in mind that an excessive number
of switchovers may significantly reduce the life of relay contacts.
Channel state on completion – the channel state after the flashing function ends:
initial state – the channel will be switched to the state in which it was before activating the
function.
on – channel will be on.
off – channel will be off.
4.3.3 Scene 1-bit
For each channel in the module, reaction to two 1-bit scenes can be defined. These scenes
are activated by a 1-bit telegram. Telegram with value “0” will activate the first scene and
telegram with value “1” – the second scene. The figure 11 shows how you can use 1-bit
scenes to control the state of channels (e.g. in lighting scenes). By defining appropriately
reaction of the channels to the first scene, you can undo the changes made by the second
scene:
initial state of the channels before calling up the scenes: A – ON, B, C and D – OFF;
reaction of the channels to calling up the scene 2: A – OFF, B, C and D – ON;
reaction of the channels to calling up the scene 1: A, B, C and D – set value from before
the scene 2.
Channel can learn 1-bit scenes from the bus. Selecting the learning option when configuring
will activate the “Channel A set scene (1-bit)” communication object, which allows for storing
the 1-bit scenes. If the object receives a telegram with value “0”, the current channel state will
be assigned to the first scene. Telegram with value “1” will assign the current channel state to
the second scene.
Description of parameters