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2019 WEINZIERL ENGINEERING GmbH
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3. Wiring scheme
Pluggable screw terminals
Channel A is on the upper terminal and channel B on the lower
terminal:
Upper terminal
The upper pluggable screw terminals
❾
are used to control e.g.
LED panels or stripes.
The +12/24V connection of the used power supply unit is con-
nected to the right terminal at the upper screw terminals (12..24V
+), at the same time with the anode of the consumer. The ground
connection of the power supply unit is connected to the middle
terminal (12..24V -). The cathode of the consumer is connected
to the left terminal (Ch A Out -).
Lower terminal
The lower pluggable screw terminals
❾
are used for the switch-
ing actuator, the left terminal pin Ch B Out is used as closer. The
central terminal pin Ch B !Out serves as opener. On the right
terminal pins Ch B Cm the common pin is contacted e.g. the
voltage to be switched.
4. Operating parameters of dimmer channel
Power dissipation
The dimming of luminaires is not possible without a certain
power loss in the dimmer. This power dissipation leads to a
heating of the device and depends on several factors. In addition
to the output of the connected lamps, the current dimming value
is also taken into account. Thus, the loss with the luminaire
switched off is almost zero except for the leakage current. Even
at 100%, the power loss is relatively low and can be traced back
to the contact resistance of the output.
Between 0 and 100% the switching losses caused by the PWM
are added. Overall, there is a maximum power loss in the upper
dimming range.
The rated power of 144W refers to the maximum permitted
ambient temperature for free installation. If there are other devic-
es next to the dimming actuator that emit heat, the power that
can be connected is reduced. Alternatively, the devices can also
be mounted at a small distance (approx. ½ TE = 9 mm). Suitable
spacers for the top-hat rail are available on the market for this
purpose.
Safety shutdown
The dimming actuator has an electronic fuse for overcurrent and
overtemperature. In both error cases, the output is switched off
and can be switched on again via a command if the error is no
longer present.
In addition, the device is also equipped with fuses against over-
current and overtemperature. This fuse stage protects connected
devices and surrounding materials against severe damage, but
leads to failure of the dimming actuator and can no longer be
reset.
5. ETS database
The ETS database (for ETS 4.2 ETS and 5) can be downloaded
from the product website of the KNX IO 532 (1D1O)
(www.weinzierl.de) or via the KNX online catalogue.
ETS parameter dialog
The following pages and parameters are visible in the ETS.
A.
Description
This page shows the device description and the associated
wiring scheme.
B.
General settings
Device name (30 Characters)
An arbitrary name can be assigned for the KNX IO 532 (1D1O).
The device name should be
meaningful, e.g. „Living Room“. This
helps the clarity of the ETS project.
Ch A
Out -
Ch A 12..24V
+
Ch B
Out
Ch B
!Out
Ch B
Cm
-
