3WL air circuit breakers
3.2 COM15 module and BSS module
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02
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3.2
COM15 module and BSS module
3.2.1
PROFIBUS DP COM15 module
With the COM15, the SENTRON WL circuit breaker can exchange data via PROFIBUS DP.
The COM15 fetches some of the most important information about the status of the switch
(on/off, spring energy store, ready, etc.) from the BSS (Breaker Status Sensor) via the
CubicleBUS. This is why both modules are offered together as a PROFIBUS DP
communication connection (option F02).
PROFIBUS DP module COM15 and BSS
The COM15 for the SENTRON WL enables the connection of the circuit breaker to
PROFIBUS DP. It supports the PROFIBUS protocols DPV0 and DPV1, and it can
communicate simultaneously with two masters of class 1 and class 2. This especially
facilitates the commissioning of parameterization tools and diagnostics tools like
Switch ES Power, and of operator control and monitoring systems (e.g. WinCC) for the
SENTRON WL.
Securing
It is possible to disable control/write access to the circuit breaker via hardware and software
if this is necessary for security reasons, e.g. to prevent switching via PROFIBUS
(manual/automatic mode) or to prevent the modification of parameters.
Integral clock
An integral clock adds a time stamp to all events such as minimum and maximum measured
values, alarms, and tripping signals. This clock can be synchronized via PROFIBUS DP in
the same way as the clock of COM15 of SENTRON WL.
Temperature sensor
The COM15 has an integral temperature sensor that provides the temperature in the control
cabinet thanks to its installation location outside the circuit breaker.
The BSS also contains a temperature sensor that shows the temperature in the breaker.
Both sensors are factory-calibrated.
Detecting the switch position
The switch position (operating position, test position, disconnected position and not present)
is detected by means of three built-in micro switches on the underside of COM15, and can
be read out via PROFIBUS DP. The circuit breaker can only be switched on and off in the
connected position and the test position.
