2
Mounting
The device has degree of protection IP20, and is the-
refore suitable for use in dry interior rooms. The hou-
sing is made for rail mounting according to EN 60715
in boards or cabinets for electrical distribution. The
installation is in horizontal position, the correct posi-
tion is when the terminals for KNX bus line and auxi-
liary output are located at the bottom and the terminals
( , L, N) for connecting the input mains power supply
Vac, Vdc are located at the top. For the installation of the
device on the rail proceed as follows:
For the installation of the device on the rail proceed as
follows:
• with the aid of a tool bring the locking device in the
fully lowered position (a);
•
place the upper edge of the rear inner profile on the
upper edge of the rail (b);
• rotate the device towards the rail (c);
• push the locking device upward until it stops (d).
At the same bus line can be connected not more than two
power supplies. A second power supply may be necessa-
ry when the installation in distribution boards requires a
particular concentration of the bus devices (tipically more
than 30 units installed within 10 m). In this case a po-
wer supply has to be installed near the group of devices.
Between two power supplies installed on the same bus
line a minimum distance of 200 m is required, measured
along the line.
Planning
Planning a KNX bus installation, the use of a 1280 mA po-
wer supply unit requires to take into account the following
guidelines:
• the maximum number of bus devices connected is
256;
• the maximum length of a line segment is 350 m, me-
asured along the line between the power supply and
the furthest bus device;
• the maximum distance between two bus devices can-
not exceed 700 m;
• the maximum length of a bus line is 1000 m, keeping
into account all segments.
Switching, display and connection elements
The device is equipped with a reset pushbutton, 3 LEDs
and terminal blocks for mains voltage 180 ~ 264 Vac (or
176 ~ 280 Vdc), KNX bus line and auxiliary output.
The LEDs behaviour is as follows:
a
b
d
c
EKINSTGUIDAEKAM1TP
Warning!
In order to supply the KNX bus lines use
only KNX bus power suppliers. The use of different
power suppliy units can compromise the communi-
cation and damage the devices connected to the
bus.
!
Note.
When mounting the device in boards and ca-
binets it shall be provided the necessary ventilation
so that the temperature can be kept within the ope-
rating range of the device.
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1) Terminal blocks for input power supply 180 ~ 264 Vac, 176 ~ 280 Vdc
2) Reset pushbutton
3) Reset LED (red)
4) Terminal block for KNX bus line
5) Terminal block for auxiliary 30 Vdc output
6) KNX output voltage LED (green/orange/red)
7) Output current LED (green/orange/red)
3
2
1
5 4
6
7
LED
Type
LED colour /
display
Meaning
3
KNX reset
Red / solid
KNX bus restart
6
KNX output
voltage, V
bus
Green / solid
28 < V
bus
< 31 Vdc
Orange / solid
V
bus
< 28 Vdc
Red / solid
V
bus
> 31 Vdc
7
Output cur-
rent, I > I
max
Green / solid
I < 1280 mA
Orange / solid
I = 1280mA ~ 1600mA
Red / solid
I > 1600mA (overload)
Note.
It is recommended that the installation of the
device always ensure the full accessibility of the
front side to allow the operation of the pushbuttons.
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