Siemens SENTRON 3WL10 Series Manual page 88

Accessories
3.3 Accessories for communication link and I/O modules
Position signaling switch communication (COM PSS)
Via the communication link, the position signaling switch COM PSS provides the signal
indicating whether the circuit breaker in the guide frame is inserted or removed.
Unlike the position signaling switch PSS, whose signals are available at the auxiliary
conductor terminal system (see Section Accessories for the auxiliary and signaling switches
(Page 80)), the position signaling switch COM PSS only signals two different states:
● INSERTED breaker position (circuit breaker in the CONNECT position)
● ISOLATED breaker position (circuit breaker in the TEST or DISCON position)
Breaker Connect module, external power supply
Via the Breaker Connect module, the electronic trip units (3- and 6-series) and the
communication modules can be supplied with power externally at the auxiliary terminal block
(auxiliary power supply).
Note
To provide the functionality of the circuit breaker as a protective device, the ETU is powered
via an internal transformer in the operating state when the main contacts are closed. When
the contacts are open, the ETU can optionally be powered via the metering function
MF Advanced and the internal voltage tap.
The Breaker Connect module can be installed on the terminal strip of the circuit breaker and
permits installation of communication modules in the ETUs of the 6-series. In this way, the
module establishes connectivity of the circuit breaker with a communication environment.
As a further functionality, it enables the internal circuit beaker bus (CB bus) at terminals CB1
and CB2 to be brought out and an external I/O module (IOM300) to be connected to any
ETU, which can then be configured via a test device (TD410/420).
Depending on the auxiliary voltage used, the following versions can be used:
● External power supply 110 to 240 V AC/DC
● External power supply 24 to 48 V DC
The Breaker Connect module is supplied as standard if the circuit breaker is configured for
communication.
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Air circuit breaker 3WL10
Manual, 11/2017, L1V30499596002-01