K-BUS ARSA-04/16.S User manual

Switch Actuator with Secure_V1.0
ARSA-04/16.S
ARSA-08/16.S
ARSA-12/16.S
ARSA-04/20.S
ARSA-08/20.S
ARSA-12/20.S
KNX/EIB Home and Building Control System
User Manual

Attentions
1. Please keep devices away from strong magnetic field, high temperature,
wet environment;
2. Please do not fall the device to the ground or make them get hard
impact;
3. Please do not use wet cloth or volatile reagent to wipe the device;
4. Please do not disassemble the devices.

Contents
Chapter 1. Summary ---------------------------------------------------------------------------------------------------- 1
Chapter 2. Technical Data ----------------------------------------------------------------------------------------------3
Chapter 3. Dimension and Connection Diagram --------------------------------------------------------------------- 6
3.1. Dimension ----------------------------------------------------------------------------------------------------- 6
3.2. Connection Diagram ----------------------------------------------------------------------------------------- 7
3.2.1. ARSA-04/16.S (ARSA-04/20.S) ---------------------------------------------------------------------7
3.2.2. ARSA-08/16.S (ARSA-08/20.S) ---------------------------------------------------------------------8
3.2.3. ARSA-12/16.S (ARSA-12/20.S) ---------------------------------------------------------------------8
Chapter 4. Parameters Setting Description in the ETS ------------------------------------------------------------ 10
4.1. KNX Secure -------------------------------------------------------------------------------------------------- 10
4.2. Parameter window “General” ------------------------------------------------------------------------------ 14
4.3. Overview of output ------------------------------------------------------------------------------------------17
4.4. Parameter window “Channel X”-Switch actuator --------------------------------------------------------18
4.4.1. Parameter window “X: Time” ---------------------------------------------------------------------- 22
4.4.2. Parameter window “X: Preset” ---------------------------------------------------------------------28
4.4.3. Parameter window “X: Logic” ----------------------------------------------------------------------30
4.4.4. Parameter window “X: Scene” --------------------------------------------------------------------- 33
4.4.5. Parameter window “X: Threshold” ---------------------------------------------------------------- 35
4.4.6. Parameter window “X: Safety” ---------------------------------------------------------------------37
4.4.7. Parameter window “X: Forced” -------------------------------------------------------------------- 38
4.5. Parameter window “Channel X”-Heating actuator ------------------------------------------------------ 40
4.5.1. Parameter window “X: Monitoring” --------------------------------------------------------------- 44
4.5.2. Parameter window “X: Forced” -------------------------------------------------------------------- 46
4.5.3. Parameter window “X: Regular” ------------------------------------------------------------------- 47
4.5.4. Parameter window “X: Safety” ---------------------------------------------------------------------48
Chapter 5. Description of communication object ------------------------------------------------------------------ 49
5.1. Communication object “General” ------------------------------------------------------------------------- 49
5.2. Communication object “Switch actuator” ---------------------------------------------------------------- 50
5.2.1. General communication object “Switch actuator” -----------------------------------------------50
5.2.2. Time function object of “Switch actuator” ------------------------------------------------------- 51
5.2.3. Preset function object of “Switch actuator" ------------------------------------------------------ 52
5.2.4. Logic function object of “Switch actuator” ------------------------------------------------------- 52
5.2.5. Scene function object of “Switch actuator" ------------------------------------------------------ 53
5.2.6. Threshold function object of “Switch actuator” ------------------------------------------------- 53
5.2.7. Forced function object “Switch actuator" ---------------------------------------------------------54
5.3. Communication object “Heating actuator” ---------------------------------------------------------------55
5.3.1. General communication object “Heating actuator” --------------------------------------------- 55
5.3.2. Monitoring function object of “Heating actuator” ----------------------------------------------- 56
5.3.3. Forced function object “Heating actuator” ------------------------------------------------------- 56
5.3.4. Regular switch function object “Heating actuator” ----------------------------------------------57
Chapter 6. Priority level description --------------------------------------------------------------------------------- 58

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Chapter 1. Summary
Switch Actuator with Secure is mainly applied in building control system, connected to the BUS via
KNX terminals and installed together with other devices on the bus to become a system. These switch
actuators can be used to control the switch loads, such as:
Lighting
Heating control
Signal devices
It is able to switch from 4 to 12 independent electrical AC loads or three-phase loads by the switch
actuators with maximum output of 16A or 20A per output and manual switch, as well as visible
switching status.
Note： The database files ARSA-xx/20.S are the same with ARSA-xx/16.S. Their main difference is
that the size of the load is not same.
Switch Actuator with Secure is modular installation devices in proM design, which are easy to
install in the distribution boards on 35mm mounting rails according to EN60715. The devices connect
to KNX system via bus connection terminal, and no additional power supply voltage is required. It is
able to use the Engineering Tool Software ETS (ETS5 or later) with knxprod file to allocate the physical
address and set the parameters.
This manual provides you the detailed technical information about the Switch Actuator with Secure,
not only the installation and programming details, but also the usage explanation in actual application.
There are same following programming functions for each output:
Manual operation available
Time function: on/off delay
Staircase function with the warning and adjustable staircase lighting time
Scene, preset control: 8bit/1bit
Logic operation: AND, OR, XOR, gate function
Status response
Forced operation and safety function
Threshold function setup
Control of electric thermal valve function
Selection of preferred status after bus voltage failure and recovery

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Current and Power measurement
Report total current and total power of device
Monitoring channel current and total current
Switching counter
Operation hours counter
Inversion of the outputs
KNX Data Secure

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Chapter 2. Technical Data
Power supply
Bus voltage
21~30 V DC, via the KNX bus
Bus current
<6.5mA/24V, <5.5mA/30V
Bus consumption
<165mW
Charging current
<20mA
Output
Unrated voltage
250V AC(50/60Hz)
Inrated current
16A (Only for ARSA-xx/16.S, xx=04/08/12)
20A (Only for ARSA-xx/20.S, xx=04/08/12)
Inrush current
480A/2ms
Output life expectancy
Mechanical endurance
>106
Electrical endurance (Resistive load)
>105
Connections
KNX
Bus connection terminal (0.8mmΦ)
Load output connection terminal
Screw terminal
Cross section
0.2—6.0mm2
Operation and display
Programming LED and button
For assignment of the physical address
Green LED flashing
Indicate the application layer running
normally
Indication of the contact position
Close means the output is on
Open means the output is off
Protection
IP20
to EN 60529
Safety class
II
to EN 61140
Temperature
Operation
-5 °C ~+ 45 °C
Storage
-25 °C~+ 55 °C
Transport
-25 °C ~+ 70 °C
Ambient
Humidity
<93%, except dewing
Design
Modular DIN-Rail Component
35mm Din rail, modular installation
Dimension
ARSA-04/16.S
ARSA-04/20.S
72 × 90 × 64mm

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ARSA-08/16.S
ARSA-08/20.S
144 × 90 × 64mm
ARSA-12/16.S
ARSA-12/20.S
216 × 90 × 64mm
Weight
ARSA-04/16.S
ARSA-04/20.S
0.35kg
ARSA-08/16.S
ARSA-08/20.S
0.60kg
ARSA-12/16.S
ARSA-12/20.S
0.85kg
Product
Load type
Rated power
Life cycles
ARSA-xx/16.S
Incandescent lamp
4000W
>30000
xx=04/08/12
Halogen lamp
4000W
>5000
Standard/Electronic ballast
4000W
>30000
Fluorescent lamp（uncompensated）
4000W
>5000
Fluorescent lamp（parallel compensated）
2800W
>5000
Motor
2200W
>30000
LED (Inrush current470A/210us)
800W
>30000

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Product
Load type
Rated power
Life cycles
ARSA-xx/20.S
Incandescent lamp
5000W
>30000
xx=04/08/12
Halogen lamp
4000W
>5000
Standard/Electronic ballast
4000W
>6000
Fluorescent lamp（uncompensated）
4000W
>5000
Fluorescent lamp（parallel compensated）
2800W
>5000
Motor
3675W
>30000
LED (Inrush current470A/210us)
800W
>50000
Note: The above load is only for single lamps. In the case of several lamps in parallel, the load will
be reduced, although the power is unchanged, but the instantaneous impact of current will increase,
and easy to make the relay contacts melted. In normal use, the maximum output current is preferably
less than 16A for resistive load, and inductive load and capacitive load will be lower.
Application program
Max. number of
communication objects
Max. number of
group addresses
Max. number
of associations
Secure group
addresses
Switch Actuator with Secure,
4-Fold/3.0
86
500
500
130
Switch Actuator with Secure,
8-Fold/3.0
168
500
500
260
Switch Actuator with Secure,
12-Fold/3.0
246
500
500
390

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Chapter 3. Dimension and Connection Diagram
The wiring diagram and dimension drawing of the ARSA-xx/20.S are the same with the
ARSA-xx/16.S.
3.1. Dimension
ARSA-04/16.S（ARSA-04/20.S）
ARSA-08/16.S（ARSA-08/20.S）

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ARSA-12/16.S（ARSA-12/20.S）
3.2. Connection Diagram
3.2.1. ARSA-04/16.S (ARSA-04/20.S)

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3.2.2. ARSA-08/16.S (ARSA-08/20.S)
3.2.3. ARSA-12/16.S (ARSA-12/20.S)

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①Programming button
②Red LED for entering the physical address, Green LED flashing for application layer running normally
③KNX bus connection terminal
④Manual operation switch control
⑤Output, load terminal
Reset the device to the factory configuration: press the programming button and hold for 4 seconds
then release, repeat the operation for 4 times, and the interval between each operation is less than 3
seconds

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Chapter 4. Parameters Setting Description in the ETS
4.1. KNX Secure
Switch Actuator with Secure is a KNX device that complies with the KNX secure standard. That is,
you can run the device in safe way.
Fig.4.1 (1) "KNX Secure" parameter window
The device with KNX secure will be displayed notes on ETS, as shown as Fig.4.1(1).
If secure commissioning is actived in ETS project, the following information must be considered during
device debugging:
It is essential to assign a project password as soon as a KNX Secure device is imported into a
project. This will protect the project against unauthorized access.
The password must be kept in a safe place – access to the project is not possible without it (not
even the KNX Association or device manufacturer will be able to access it)!
Without the project password, the commissioning key will not be able to be imported.
A commissioning key is required when commissioning a KNX Secure device (first download).
This key (FDSK = Factory Default Setup Key) is included on a sticker on the side of the device, and it
must be imported into the ETS prior to the first download:
On the first download of the device, a window pops up in the ETS to prompt the user to enter
the key, as shown in Fig.4.1 (2) below.
The certificate can also be read from the device using a QR scanner (recommended).

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Fig.4.1(2) Add Device Certificate window
Alternatively, the certificates of all Secure devices can be entered in the ETS beforehand.
This is done on the "Security" tab on the project overview page, as shown in Fig.4.1(3) below.
The certificates can be also added to the selected device in the project, as shown in Fig.4.1(4).
Fig.4.1(3) Add Device Certificate
Fig.4.1(4) Add Device Certificate
There is a FDSK sticker on the device, which is used for viewing FDSK number.
Without the FDSK, it will no longer be possible to operate the device in KNX Secure mode
after a reset.
The FDSK is required only for initial commissioning. After entering the initial FDSK, the ETS will
assign a new key, as shown in Fig.4.1(5) below.
1.1.8 Switch Actuator with Secure

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The FDSK will be required again only if the device was reset to its factory settings (e.g. If the device
is to be used in a different ETS project).
Fig.4.1(5)
Example:
If this application in the project needs to be tried with another device, it is no longer the original
device. When the application is downloaded to a new device, the following prompt will appear on the
left of Fig.4.1(6), click yes, the Add Device Certificate window will appear, then enter the initial FDSK of
the new device, and you need to reset the device to the factory settings (it is not required if the device is
still factory default; If it has been used, it will be required to reset, otherwise the following error
message will appear on the right of Fig.4.1(6)), and then the device can be successfully downloaded
again.
Fig.4.1(6) Example
Whether the device is replaced in the same project, or the device is replaced in a different project,
the processing is similar: Reset the device to the factory settings, then reassign the FDSK.
After the device is downloaded successfully, the label Add Device Certificate turns gray, indicating
that the key for this device has been assigned successfully, as shown in Fig.4.1(7) below.
Initial FDSK
ETS assigned
-.-.-Switch Actuator with Secure
1.1.8 Switch Actuator with Secure
1.1.8 Switch Actuator with Secu...

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Fig.4.1(7)
ETS generates and manages keys:
Keys and passwords can be exported as needed to the use of security keys outside of the
associated ETS projects. As shown in Fig.4.1(8) below, the file extension is .knxkeys.
Fig.4.1(8)
Note: Any USB interface used for programming a KNX Secure device must support "long frames".
Otherwise ETS will report a download failure information, as shown below.

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4.2. Parameter window “General”
The parameter window “General” will be shown in Fig. 4.2, here set product type and general
parameters, general parameters apply to every output.
Fig. 4.2 Parameter window “General”
Parameter “Product type”
The parameter sets the product type of the Switch Actuator with current detection, and selects the
option according to the type of product actually used. Options:
4-Fold Output (apply to ARSA-04/16.S, ARSA-04/20.S)
8-Fold Output (apply to ARSA-08/16.S, ARSA-08/20.S)
12-Fold output (apply to ARSA-12/16.S, ARSA-12/20.S)
Parameter “Operation delay after bus recovery [10..250]”
The parameter determines the delay time to react after the bus voltage recovery (the delay time
after electrified) to avoid the malfunction of the bus and 220V AC caused by the simultaneously
working of various relays, excluding the initialization time (approx. 2 seconds) of the device.
Options: 10-250 s

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If there are other devices (e.g. monitor) require to read the communication target value of the relay
during the delay time after power on, then this requirement will be recorded, and then reacted after the
delay time is finished.
If the delay time is long enough, all contacts of the relay can work simultaneously.
NOTE: And considering that it will generate damage to the power system and bus if a lot of
devices operate simultaneously after bus recovery , so it is suggested to set the different delay time
to each device.
Parameter “Sending cycle of "In operation" telegram [1..240,0=inactive]”
The parameter determines the time interval to send the telegram which shows the actuator is
working normally or not via the bus. With the setting “0”, the actuator doesn’t send the telegram; if the
setting is not “0”, a telegram with the value “1” will be sent cyclically according to the setting to the bus.
Options: 0…240s, 0=cyclical send inactive
It is suggested to select the maximum time interval according to the application to keep the bus
load as low as possible.
NOTE: It is starting to count the time after power up, instead of the operation delay after recovery
of bus voltage.
Parameter “Enable Safety priority function”
The parameter is used to set the enable status of the function “Safety priority”.
If it is enabled, 2 “Safety priority” will be activated.
Parameter “ Safety priority x”(x = 1, 2)
There are 2 “safety priorities” for selecting. It is available to define the trigger condition to each
“Safe priority”, and also enable the correspondent communication object “Safety Priority x” (x=1, 2).
These objects are important to the entire relay when under the working mode “Switch Actuator”
and “Heating actuator (without controller)”, but each output can react differently depending on the
received telegrams, whose reactions can be defined in the parameter window “X: Safety”. Options:
Inactive
Reset safety by Object value “0”
Reset safety by Object value “1”

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When the setting is “inactive”, it will not initiate any “Safety Priority”;
If the communication object “Safety Priority x” receives “0”, the “Control period” of “the Safety
Priority x” will be initiated with “Reset safety by Object value “0””;
If the communication object “Safety Priority x” receives “1”, the “Control period” of “the Safety
Priority x” will be initiated with “Reset safety by Object value “1””.
During the “Control period”, if the object “Safety Priority x” receives no corresponding telegram, it
will trigger “Safety Priority”, and then the correspondent action will be initiated, which will be defined in
the parameter window “X: Safety”.
Parameter “Control period of safety priority x [1..240, 0 = inactive]” (x =1, 2)
This parameter is visible only if the parameter “safety priority x” (x = 1, 2) is activated. If no
telegram is received from the object “Safety Priority x
（
x=1, 2） ” during this time period ("Control period"),
"Safety Priority x" is triggered.
When the object “Safety Priority x
（
x=1, 2） ” is re-received, the "Safety Priority x" trigger is ended and
the "Safety Priority x" timing (“Control period” is triggered) is reset. Options: 0... 240s
If select “0", the corresponding "Safety Priority x" is not activated. However, in this configuration,
the object can be activated, i.e. the object receives the opposite message as the configured reset
telegram value, triggering the corresponding security state. This does not apply if the setting is not 0s.
"Safety priority" function should be monitored longer than twice the sensor's data-sending cycle to
avoid an immediate alarm when individual signals occasionally fail.
Parameter “Priority of safety operation”
This parameter for describing that priority of 2 is higher than that of 1.
Parameter “Normal, object value of switch on/off”
This parameter for describing that the object value of Switch on/off.
"1"=switch on; "0"=switch off
Switch on=contact close ; Switch off=contact open
NOTE: “Switch on” mentioned below means the contact of the switch actuator is closed (output is
on); “switch off” means the contact of the switch actuator is open (output is off)!

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4.3. Overview of output
It is able to choose an operation mode and its corresponding functions for every output, and the
functions are activated separately. The two operation mode and its corresponding functions are
relative.
Fig.4.3 Parameter window “Channel X”
Parameter “Description (max. 30char.)”
This parameter is used to set the custom description of channel, up to input 30 characters.
Parameter “Work mode of the channel is”
This parameter is used to define the output mode.Options:
Switch actuator
Heating actuator(without controller)
Switch actuator
It is used for normal switching, for instance lighting control, which uses the object “Switch” to
control the output directly. Lots of extension functions such as timing, logical, safety functions are
available to use. Application description can be found in Chapter 4.4.
Heating actuator
In this function, the output is used to control the cooling/heating temperature. In some room,
thermostat will send a control value out to switch the valve (e.g. 2-step control). Application description
can be found in Chapter 4.5.
It works for all the outputs. “Channel X” mentioned below means any output of the switch actuator,
which has the same parameter setup interface and communication objects. More details can be found
below.