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Power Supply Unit
gesis KNX PS160
gesis KNX PS320
gesis KNX PS640
Product and Applications Description
The power supply unit gesis KNX PS provides the system
power necessary for the KNX bus system. The connection to
the bus line is established via the bus connection block lo-
cated on the front side.
The integrated choke prevents the data telegrams from
short-circuiting on the bus line. When the built-in reset
switch is operated (operation > 20s), the bus devices are re-
turned to their configured operating mode.
For each bus line, at least one power supply unit is need-
ed. Up to two power supply units may be attached to a sin-
gle bus line.
A second unit is not required unless the supply voltage at a
bus device is less than 21V.
When more than 30 bus devices are installed in short bus
cable distance (e.g. 10m), e.g. in distribution boards, the
power supply unit gesis KNX PS should be arranged near
these bus devices. The distance between power supply unit
gesis KNX PS and any of its bus devices must not exceed
350m.
The power supply unit gesis KNX PS has a voltage and
current regulation and is therefore short-circuit proof. Short
power failures can be bridged with a backup interval of ap-
proximately 200ms.
To ensure an uninterrupted power supply a separate cir-
cuit with safety separation should be used for the power
supply unit gesis KNX PS power supply line.
All power supply units can supply un-choked output volt-
age via an additional pair of terminals. This output voltage
can be used to power e.g. an additional line via a separate
choke (optionally available).
Application Programs
Requires no application programs
Example of Operation
220 V DC
L N GND
120...230 V AC
220 V DC
Doc. # BA000522 – 02/2013 (Rev. B)
Technical Specifications
EN
Input voltage
• rated voltage: AC 120...230 V, 50...60Hz
• permissible range: AC 102 ... 253 V
Power input
approx. 24 VA
83.020.1413.0
Output voltage
83.020.1414.0
• rated voltage: DC 29 V
83.020.1415.0
• safety extra low voltage (SELV)
• permissible range: DC 28 ... 30 V
Output current
• rated current
• short-circuit current:
limited to
Backup interval
on input voltage failure: approx. 200 ms at rated current
Connections
• mains connection, screwless plug-in terminals:
strip insulation for 9 ... 10 mm
permissible conductor types/cross sections:
-
0,5 ... 2,5 mm² unprepared
• bus line:
pressure contacts on data rail,
screwless extra low voltage terminal (red–black)
∅ 0,6 ... 0,8 mm, solid conductor
strip wire approx. 5 mm
• output voltage (no choke):
screwless extra low voltage terminal (yellow-white)
∅ 0,6 ... 0,8 mm, solid conductor
strip wire approx. 5 mm
Physical specifications
• dimensions: DIN-rail mounted device,
width: 4 SU (1 SU = 18 mm)
• weight: approx. 240 g
Electrical safety
• protection (according to EN 60529): IP 20
Environmental specifications
• ambient temperature operating: - 5 ... + 45 °C
• storage temperature: - 25 ... + 70 ° C
• relative humidity (non-condensing): 5 % to 93 %
Position and Function of Display and Operator Elements
A1
+
-
Figure 1: Location of the display and operator elements
extra low-voltage bus terminals (red-black)
A1
A2
reset switch
A3
extra low-voltage terminals (un-choked voltage yellow-
white)
A4
type plate
A5
red LED for indicating that the power supply unit
KNX PS is in reset position
green LED for indicating normal operation of the power
A6
supply unit gesis KNX PS
red LED for indicating a shorted-out bus line or a device
A7
over-load
screwless plug-in terminals for connecting the mains
A8
(mains terminals)
ground terminal
A9
Installation Instructions
The device may be used for permanent interior installations
in dry locations within distribution boards or small casings
with DIN rail EN 60715-TH35-7.5.
gesis KNX PS...
DC 220 V
160 mA (gesis KNX PS160),
320 mA (gesis KNX PS320),
640 mA (gesis KNX PS640)
1,0 A (gesis KNX PS160, PS320)
1,5 A (gesis KNX PS640)
A2
A3
+
-
L N
A8
A9
WARNING
WARNING
WARNING
WARNING
• The device may be built into distribution boards
(230/400V) together only with appropriate VDE-devices.
• The device must be mounted and commissioned by an
authorised electrician.
• Free DIN rail areas with sticked-in data rails must be
covered with covers.
• A safety disconnection of the device must be possible.
• The prevailing safety rules must be heeded.
• The device must not be opened.
• For planning and construction of electric installations, the
relevant guidelines, regulations and standards of the re-
spective country are to be considered.
Mounting and Wiring
General description
The power supply unit can be installed to any DIN-rail EN
60715 TH35-7,5 in distribution boards.
The connection to the bus line is established via bus connec-
tion block.
Take care that the type plates of all devices on a DIN-rail can
be read in the same direction, guaranteeing the devices are
polarised correctly.
Connection to the bus
If the connection is established via bus connection block
(data rail not installed) the data rail connection system has
to be covered with the enclosed insulation hood after remov-
ing the guiding hood e.g. with a screw driver to guarantee a
sufficient insulation from the DIN rail.
Removing the guiding top (Figure 2)
-
The guiding top (D3) surrounds the contact system (D2)
on the back side of the device (D1).
-
Insert the screw driver between the DIN-rail device (D1)
and the guiding hood (D3) and remove the guiding hood.
Inserting the insulation top (Figure 2)
-
Put the insulation top (D4) onto the contact system and
click it into place by a slight pressure.
D1
D2
D3
A4
Figure 2: Covering the contact system with insulation top
General Notes
A5
Faulty devices must not be opened and have to be returned
to the manufacturer:
A6
A7
Wieland Electric GmbH
QC/QA Dept.
Brenner Straße 10–14
96052 Bamberg
Tel.: +49(951)9324-0
Fax: +49(951)9324-198
gesis
D2
D1
D4
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