Satel KNX-DIM21 User manual

KNX-DIM21
Universal two-channel dimming actuator
Firmware version 1.01 knx-dim21_en 12/19
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-DIM21 1
CONTENTS
1. Features ...........................................................................................................................2
2. Description........................................................................................................................2
2.1 Load types..................................................................................................................................4
2.2 Overheating protection...............................................................................................................4
2.3 Wiring diagram of module outputs..............................................................................................5
2.4 Enclosure ...................................................................................................................................5
3. Installation ........................................................................................................................5
3.1 Connection diagram ...................................................................................................................6
4. Configuring the module.....................................................................................................7
4.1 Function priorities.......................................................................................................................8
4.2 Configuring global parameters ...................................................................................................9
4.3 Configuring the channels..........................................................................................................10
4.3.1 Value limits.......................................................................................................................................14
4.3.2 Time.................................................................................................................................................15
4.3.3 Scene 1-bit.......................................................................................................................................22
4.3.4 Scene...............................................................................................................................................25
4.3.5 Value forcing....................................................................................................................................26
4.4 Communication objects............................................................................................................27
4.4.1 Global objects..................................................................................................................................27
4.4.2 Channel objects...............................................................................................................................29
4.5 Restoring the module factory settings......................................................................................34
5. Specifications .................................................................................................................34

2 KNX-DIM21 SATEL
The KNX-DIM21 module is a universal two-channel dimming KNX actuator that allows
stepless control of light sources up to 300 W per channel. The light can be turned on / off,
dimmed down (darker) / dimmed up (brighter), set by using a predefined scene or another
function via the KNX bus. The actuator can be used with resistive, inductive and capacitive
loads (R, L, C).
This module is designed for use with 230 VAC power and may not be used for
dimming light sources supplied with DC current, as this might damage the
module and the connected load.
1. Features
Communication with KNX bus via integrated bus connector.
Automatic recognition of the connected load type.
Adjustable lighting characteristic to suit the load type.
Two-stage, firmware-hardware overheating protection system.
Overload protection.
Feedback on status of module and individual channels.
Definable reaction of each channel in case of KNX voltage loss and recovery.
Definable behavior of each channel in case of voltage recovery.
Time functions (switching delay, staircase function with warning option and operating time
change).
Value forcing function.
Option to call scenes for each channel by using 1- and 8-bit commands.
Manual operation of each channel status by using buttons on the enclosure.
LEDs to indicate each channel status and signal troubles.
Ability to be mounted on DIN rail (35 mm).
Module configuration using ETS software.
2. Description
load circuit terminals L1, L2, N, .

SATEL KNX-DIM21 3
LEDs to indicate channel status / troubles ( and –green, –red) –see Table 1.
LED
A / B channel status
blocked (startup delay)
mains synchronization / load detection
no load / unknown load type before detection
switched off
switched on
Trouble type
overload
overheat
voltage trouble
hardware failure
–OFF, –ON, –flashing.
Table 1.
If a hardware failure is reported, de-energize the 230 VAC load circuit and
disconnect the KNX bus cable to reset the module. If, after power-on and restart
of the module, the channel keeps on reporting failure, power off the module and
notify the service technicians about the fault. Further operation of the module
may pose hazard to the health or life of the operator and may damage the
module as well as the connected load.
buttons for manual control of the channels –see Table 2.
Button
Operation
Reaction
short press
switch on
long press
dim up
short press
switch off
long press
dim down
+
short press
detection of load connected to the channel
The module will interpret button press as a long one when the button is held down
longer than for 1 second.
Table 2.
The brightness value set by using buttons is not saved to the non-volatile memory of
the module.
Starting detection of the connected load by using the buttons is only possible when the
automatic mode of load detection is selected for the channel in the ETS program (see
“Configuring the channels”).

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You can also use the buttons to restore factory settings of the module (see “Restoring
the module factory settings”).
red LED –ON when a physical address is being assigned by using the ETS program.
The address assignment can be activated manually with the button on the enclosure
or remotely from the ETS program.
programming button (to be used to assign the physical address).
terminal to connect the KNX bus.
2.1 Load types
The module is designed for use with the following load types:
–resistive (R),
–inductive (L),
–capacitive (C).
After connecting the mains voltage, the module can automatically recognize the type of
connected load. How the connected load will be detected is defined separately for each
channel in the ETS program (see “Configuring the channels”).
It is recommended that automatic detection of the connected load be performed.
Selecting an incorrect type of load for the channel may damage the module and
the connected load.
You can combine different types of loads within the lighting groups connected to one
channel. Resistive (R) and inductive (L) loads, as well as resistive (R) and capacitive (C)
loads can be combined into groups. For detailed information, see section “Configuring the
channels”.
You must not combine inductive loads with capacitive ones. Connecting the
loads of this type to one channel will damage the module.
2.2 Overheating protection
The module heats up during operation, because part of the power is converted into heat as
power loss. For protection against overheating, the module is provided with firmware /
hardware safety protections which switch off and lock the channels at all times when the
module temperature reaches its maximum permissible value. After the module cools down,
the channels are unlocked, but they still remain switched off. The specified operating
parameters will only be restored after the channel is enabled by the user.

SATEL KNX-DIM21 5
2.3 Wiring diagram of module outputs
The module has two independent channels based on two independent circuits with
a common neutral point.
2.4 Enclosure
The module occupies 4 units on the 35 mm DIN rail.
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 the mounting rail.
2. Connect the loads to load terminals. For designations of the terminals see the front panel.
All connections should be made in accordance with the wiring diagram (see
“Connection diagram”).

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3. Use the connection terminal to connect the KNX bus cable to the module.
The module is supplied with voltage from the KNX bus and requires no additional
power supply.
4. 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.
3.1 Connection diagram
Fig. 4 shows how the load can be connected to the module:
I and II –multi-phase mode,

SATEL KNX-DIM21 7
III and IV –single-phase mode.
The maximum load that can be connected to each channel is 300 W. The load can only be
connected to one channel.
Never connect the module channels in parallel to increase the maximum load
power (Fig. 5-I). Connecting the modules as shown in Fig. 5-II to power supply
one module from the other is also forbidden. Making connections as shown in
Fig. 5-I or 5-II may cause damage to the modules and the connected load.
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 other group includes
parameters assigned to the channel. These parameters have direct effect on how the
channel will react to functions activated in the module or how its status will change (see
“Configuring the channels”).
The module working parameters defined in the ETS program, automatically detected
(connected load type) and set as a result of learning scenes by the module, are saved
to the non-volatile memory of the module. Remember that using the “Download”
command to save the new settings defined in the ETS program will erase the other
data saved to that memory.

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4.1 Function priorities
The order in which the functions can change the status of channels in the module depends
on what priority the given function has. The value forcing function has the highest priority,
whereas the switching and dimming functions have the same priority (see Fig. 5). A higher
priority function can override the channel status previously set by a lower priority function.