SIEMENS
14/3
Siemens KT 10.1 · 2016
14
Power supplies for AS interface
1-phase, 30 V DC (without data decoupling)
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Overview
PSN130S 30 V power supply units for 3 A, 4 A and 8 A
The PSN130S 30 V power supplies feed 30 V DC into the
AS-Interface cable and supply the AS-Interface components,
but do not include data decoupling. Additional data decoupling
units are needed to separate communication signals and supply
voltage, see "S22.5 Data Decoupling Modules" or "DCM 1271
Data Decoupling Module", see Accessories,
page 14/4
The power supplies are overload and short-circuit proof.
Dimensions
The 30 V power supply units have compact dimensions in widths
of 50 and 70 mm. No distances to other devices must be ob-
served during the installation.
Features
•
Primary-clocked power supplies for connecting to a single-
phase AC power supply system
•
Power for currents of 3 A, 4 A and 8 A
•
The output voltage is floating, and resistant to short-circuits
and no-load operation. In the event of an overload, the output
voltage will be reduced or switched off. After a short-circuit or
overload the devices will start up again automatically.
•
In the event of a device fault, the output voltage will be limited
to max. 37 V.
•
Modular installation devices in degree of protection IP20 and
safety class I
•
Diagnostics: With an output voltage > 26.5 V DC, the green
LED (30V O.K.) is lit and the signaling contact 13-14 is closed.
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Benefits
•
Low-cost alternative solution for supplying AS-Interface
networks while making full use of the maximum possible cable
length per AS-i segment
•
Cost advantage particularly for multiple networks
•
Compact, space-saving dimensions
•
Reliable power supply even for large numbers of AS-Interface
modules with high power requirements
•
Can be used worldwide thanks to, for example, UL/CSA
approval (UL 508)
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Application
Data decoupling modules S22.5 and DCM 1271
A data decoupling module is also required in order to use a
PSN130S 30 V power supply unit for AS-Interface.
With the aid of the data decoupling module, the
AS-Interface network can be supplied with 30 V DC from a stan-
dard power supply unit and the transmission of data and power
can be realized along one cable.
Alternatively, it is also possible to use a standard 24 V DC power
supply unit (AS-i Power24V). However, in this case please note
that all components involved must be designed for the reduced
voltage and that the maximum length of an AS-i Power24V
network is limited to 50 m.
The power supply units must comply with the PELV (Protective
Extra Low Voltage) or SELV (Safety Extra Low Voltage) standards,
have a residual ripple of < 250 mVpp and in the event of a fault,
must limit the output voltage to a maximum of 40 V.
The combination of data decoupling modules and standard power
supply units is therefore a cost-efficient alternative to the service-
proven AS-Interface power supply units.
The quality of the data signals and the reliable operation of the
AS-i network are not negatively affected as the result.
Configuration examples of AS-Interface networks
with a 30 V power supply unit
Configuration of AS-Interface multiple networks, each with one PSN130S
30 V power supply unit (examples with schematic representation):
Double network based on S22.5 double data decoupling module and
double master IE/AS-i LINK PN IO
IE/AS-i LINK PN IO double master
and
double data decoupling module
PSN130S
30 V power
supply unit
AS-Interface
PROFINET
AS-Interface
IC01_00221
© Siemens AG 2016