3WL Air Circuit Breakers
3WL Air Circuit Breakers/Non-Automatic Air Circuit Breakers up to 6300 A (AC)
General data
20
Siemens · 2012
Communication-capable circuit breakers
Communication with PROFIBUS DP
Communication with MODBUS
The requirements for power distribution in terms of communica-
tion capability, data transparency, flexibility and integration are
constantly increasing. An integrated and modular communica-
tion architecture was designed for the 3WL circuit breaker to en-
sure that it can satisfy these requirements.
The core component of this architecture is the
Cubicle
BUS,
which links together all of the intelligent components within the
3WL circuit breaker and enables the easy and safe connection
of other additional external components to the circuit breaker.
The
Cubicle
BUS is already incorporated and pre-connected in
all complete circuit breakers with ETU45B and ETU76B releases.
The high level of modularity of the system allows communication
functions to be retrofitted at any time (e. g. the measurement
function). Similarly, the upgrade of a non-communication-capa-
ble 3WL circuit breaker (e. g. changeover from ETU25B to
ETU45B with
Cubicle
BUS) can be carried out easily on site in
the plant. All modules connected to the
Cubicle
BUS can directly
access the existing source data of the circuit breaker, which
guarantees the quickest possible access to information and
response to events.
Furthermore, additional external modules (including digital
inputs/outputs, analog outputs) can be connected to the
Cubicle
BUS to provide cost-effective solutions for the automa-
tion of further devices in the switchgear.
NSE0_01820b
Ethernet/
Intranet/
Internet
PLC e.g. SIMATIC S7
data acquisition and
processing
PC with Switch ES Power
SENTRON 3WL/3VL parameterization
and visualization tool through
PROFIBUS DP
Output device
e.g. notebook
with browser
BDA Plus
Measurement-
function Plus
COM15
BSS
ETU
Zone Selective
Interlocking module
Digital output module
Relay
Digital output module
Relay, configurable
Analog output module
Digital input module
NSE0_01894a
Ethernet/
Intranet/
Internet
MODBUS Master
PLC or monitoring software
Configuration and
display software
Output device
e.g. notebook
with browser
BDAPlus
Measurement
function Plus
COM16
BSS
ETU
MODBUS
Zone Selective
Interlocking module
Digital output module
Relay
Digital output module
Relay, configurable
Analog output module
Digital input module
© Siemens AG 2011
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