Specifications
AS-Interface
Power supply units and data decoupling modules
AS-Interface power supply units
6/135
Siemens IK PI · 2012
6
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Overview
AS-Interface power supply unit
for 3A
AS-Interface power supply units feed 30 V DC into the
AS-Interface cable and supply the AS-Interface components.
They include power-optimized data decoupling for the separa-
tion of communication signals and control supply voltage. As the
result, AS-Interface is able to convey both data and power along
a single line. The power supply units are resistant to overloads
and short circuits.
Dimensions
AS-Interface power supply units have compact dimensions in
widths of 50 / 70 / 120 mm. No distances from other devices
need to be observed when mounting the power supply units.
Features
• Higher rating: The power supply units deliver currents
of 2.6 to 8 A.
• Integrated data decoupling: As the result, AS-Interface is able
to convey both data and power along a single line.
• Integrated ground-fault detection: The power supply units
perform the reliable detection and signaling of ground faults
according to IEC 60204-1. The AS-Interface voltage can be
disconnected automatically in the event of a ground fault.
• Integrated overload detection: An output overload is detected
and reported over a diagnostics LED.
• Diagnostics memory: Any ground faults or overloads on
the output side are stored in a diagnostics memory until the
device is reset.
• Remote reset and remote signaling: Using relay contacts,
a ground fault can be signaled and evaluated by a central
controller and/or indicator light.
• Diagnostics LEDs: Three different LEDs indicate the status of
the AS-Interface power supply locally at the power supply unit.
• Ultra-wide input range / two-phase connection: The ultra-wide
input range of 120 to 500 V of the 8 A version means that the
supply units can be used in virtually any network worldwide.
In addition, this version dispenses with the need for an N con-
ductor as the device can be connected directly between
2 phases of a network.
• Operation with 24 V DC: The 3 A power supply unit is also
available as a version with a 24 V DC input. This power supply
unit is suitable for use in battery-powered systems or in sys-
tems with UPS (uninterruptible power supply).
• Removable terminal blocks with spring-type connections:
For easy exchanging of devices, each power supply unit has
three removable terminal blocks: for the input side, for the out-
put side and for Signal/Reset connections.
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Benefits
• Complete solution for supplying AS-Interface networks while
making full use of the maximum possible cable length of
100 m or 200 m (with an extension plug) per AS-i Segment
• Only AS-i masters and AS-i slaves need to be connected to
the AS-Interface cable in order to operate AS-Interface
• Compact, space-saving dimensions
• Reliable power supply even for large numbers of AS-Interface
modules with a high power requirement
• Integrated ground-fault and overload detection saves the
need for additional components and enhances safety
• Fast fault detection and reduced downtimes thanks to
diagnostics memory, remote signaling and remote reset
• Reduced downtimes as the result of removable terminal
blocks which enable the fast exchanging of devices
• Ultra-wide input range of the 8 A version permits single-phase
and two-phase operation and saves the need for an N con-
ductor
• Can be used world-wide thanks to for example UL/CSA
approval (UL 508)
• With the 2.6 A version the output power is restricted to
max. 100 W for use in NEC Class 2 circuits.
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Selection and ordering data
Version Spring-type terminals
Order No.
3RX9 501–0BA00
3RX9 503–0BA00
AS-Interface power supply unit IP20
• AS-i single output 30 V DC
• With integrated ground-fault detection
• 2.6 A version with output power restricted to max. 100 W
(for use in NEC Class 2 circuits)
• Dimensions: Width: 50 mm (3 A / 2.6 A); 70 mm (5 A),
120 mm (8 A); Height: 125 mm; Depth: 125 mm
Output current Input voltage
2.6 A / max. 100 W 120 / 230 V AC (selectable) 3RX9 501-2BA00
3 A 120 / 230 V AC (selectable) 3RX9 501-0BA00
3 A 24 V DC 3RX9 501-1BA00
5 A 120 / 230 V AC (selectable) 3RX9 502-0BA00
8 A 120/ 230 ... 500 V AC (selectable) 3RX9 503-0BA00
Kap_06_en.book Seite 135 Freitag, 2. September 2011 1:42 13
© Siemens AG 2011