Communication-capable Circuit Breakers
External
Cubicle
BUS
Modules
By connecting additional,
external modules to the
Cubicle
BUS
, breaker status
information can be displayed
and data read from the
switchgear to the system.
This enables cost-effective
solutions to be implemented
for automating other devices
in the switchgear.
General
External
Cubicle
BUS
modules
enable the WL Circuit Breaker to
communicate with secondary
devices in the switchgear. They can
be used, for example, to activate
analog displays, transmit circuit
breaker status and cause of trip,
and read additional control signals.
One module is also available for
zone-selective interlocking.
Five different
Cubicle
BUS
modules
can output data from the
Cubicle
BUS
system (four digital output modules
and one analog output module). A
digital input module can transmit
data from the switchgear to the
PROFIBUS master, and a ZSI module
enables zone selective interlocking
among the circuit breakers.
Rotary Switches
With the exception of the
configurable output module, all
external
Cubicle
BUS
modules are
configured using rotary switches.
The arrow on the rotary switch
points to the function that is
currently active. With certain
modules (e.g. digital output
modules), the group selection
(e.g. “1st Module” left; highlighted)
and then any other settings (e.g.
time delay) must be taken into
account. More information on this
is provided with the individual
module instruction sheets and the
WL Instruction Manual.
Installation
The external
Cubicle
BUS
modules
can be installed onto a standard
35mm DIN rail on the panel.
The cable for connecting the first
module to the circuit breaker must
be no longer than 2m.
Prefabricated cables, which can
be ordered separately in different
lengths, must be used to connect
the
Cubicle
BUS
modules to each
other and to the circuit breaker.
These cables enable the various
components to communicate and
supply the
Cubicle
BUS
modules
with 24V DC.
2/20
All external
Cubicle
BUS
modules have the same housing. The
Cubicle
BUS
can be connected
to X1 and X2 with an RJ45 plug or a terminal connection made to X3. This depends on
whether a COM15 module is available.
Figure
2-10
In this example, the rotary switch
has been set to function “0.2”.
Graphic
2-5
WL Circuit Breaker
WL PROFIBUS Communication and Electronic Accessories • July 2004