Satel KNX-DIM21 User manual

KNX-DIM21
Universal two-channel dimming actuator
Quick installation guide
Full manual is available on www.satel.eu
Firmware version 1.01 knx-dim21_sii_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.

This manual only regards the installation of module KNX-DIM21. For more information about module
and its configuration, please refer to the full manual available at www.satel.eu.
1. Description
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 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.
load circuit terminals L1, L2, N, .
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.
Tabela 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

2 KNX-DIM21 SATEL
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 full
module manual).
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.
1.1 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 the full manual to the module).
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 the full manual.
You must not combine inductive loads with capacitive ones. Connecting the loads of
this type to one channel will damage the module.

SATEL KNX-DIM21 3
1.2 Wiring diagram of module outputs
The module has two independent channels based on two independent circuits with a common neutral
point.
1.3 Enclosure
The module occupies 4 units on the 35 mm DIN rail.
2. 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.

4 KNX-DIM21 SATEL
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”).
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.
2.1 Connection diagram

SATEL KNX-DIM21 5
Fig. 4 shows how the load can be connected to the module:
I and II –multi-phase mode,
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.
3. Restoring the module factory settings
1. Press simultaneously the four channel status control buttons situated on the module enclosure
(see “Description”). The status LEDs above the buttons will come on..
2. Hold down the buttons until the status LEDs go off (about 10 seconds). Restart of the module will
follow and the factory settings will be restored.
4. Specifications
Supply
Supply voltage (KNX bus)....................................................................................................20…30 VDC
Current consumption from KNX bus ...........................................................................................< 10 mA
Load circuit
Rated voltage Un........................................................................................................................230 VAC
Mains frequency.........................................................................................................................50/60 Hz

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Maximum power loss.........................................................................................................................4 W
Standby power loss ........................................................................................................................0.8 W
Contact type ..........................................................................................................................ε, MOSFET
Maximum output load
Incandescent lamps.........................................................................................................300 W
HV halogen lamps ..........................................................................................................300 VA
Inductive transformers.....................................................................................................300 W
Tronic (electronic) transformers.......................................................................................300 W
HV-LED lamps.................................................................................................. typical 3…60 W
Compact fluorescent lamps.............................................................................. typical 3…60 W
Mixed load
resistive-inductive...................................................................................................20…300 VA
resistive-capacitive ...................................................................................................20…300 W
Maximum device load............................................................................................................ 600 W / VA
Connections
Maximum wire cross-section ...................................................................................................... 2.5 mm2
Maximum tightening torque ..........................................................................................................0.5 Nm
KNX parameters
Maximum time of reaction to telegram ........................................................................................< 20 ms
Maximum number of communication objects .......................................................................................58
Maximum number of group addresses...............................................................................................256
Maximum number of associations......................................................................................................256
Other parameters
Operating temperature range ............................................................................................... 0°C...+45°C
Storage/transport temperature range ................................................................................-25°C...+70°C
IP code .............................................................................................................................................IP20
Number of units on DIN rail ....................................................................................................................4
Enclosure dimensions ...................................................................................................70 x 92 x 60 mm
Weight .............................................................................................................................................160 g
Exceeding the limit values of the module working parameters may damage the module
and pose hazard to human health or life.