Siemens SENTRON 3WL Reference Manual page 22

3WL Air Circuit Breakers
3WL Air Circuit Breakers/Non-Automatic Air Circuit Breakers up to 6300 A (AC)
General data
Communication-capable circuit breakers
Ethernet/
Intranet/
Internet
BDA
BDA Plus
Communication with PROFIBUS DP
Ethernet/
Intranet/
Internet
BDA
BDAPlus
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 SENTRON 3WL to ensure
that it can satisfy these requirements.
The core component of this architecture is the CubicleBUS,
which links together all of the intelligent components within the
SENTRON 3WL and enables the easy and safe connection of
other additional external components to the circuit breaker. The
CubicleBUS is already incorporated and pre-connected in all
complete circuit breakers with ETU45B and ETU76B releases.
22 Siemens · 2009
PLC e.g. SIMATIC S7
data acquisition and
processing
Output device
e.g. notebook
with browser
COM15
BSS
ETU
Measurement-
function Plus
MODBUS Master
PLC or monitoring software
MODBUS
Output device
e.g. notebook
with browser
COM16
BSS
ETU
Measurement
function Plus
PC with Switch ES Power
SENTRON 3WL/3VL parameterization
and visualization tool through
PROFIBUS DP
Configuration and
display software
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-ca-
pable SENTRON 3WL (e .g. changeover from ETU25B to
ETU45B with CubicleBUS) can be carried out easily on site in
the plant. All modules connected to the CubicleBUS can directly
access the existing source data of the circuit breaker, which gu-
arantees the quickest possible access to information and re-
sponse to events.
Furthermore, additional external modules (including digital in-
puts/outputs, analog outputs) can be connected to the
CubicleBUS to provide cost-effective solutions for the automa-
tion of further devices in the switchgear.