Siemens SENTRON VL Series System Manual page 70

3WL air circuit breakers
3.5 External CubicleBUS modules
Versions
The current carrying capacity of an output is 150 mA here, and the maximum voltage is 24 V
DC. Only direct voltage can be switched. The output module offers a changeover contact in
each case with a maximum load of up to 12 A. Voltages to 230 V and AC voltage are
possible. In addition, the relay contacts are isolated.
Load shedding message
By means of the load shedding and load pick up signals, a load can be switched off or
connected automatically, dependent on the capacity utilization of the circuit breaker. This is
the first stage of energy management.
Configuration
The configuration of the module is set using a rotary coding switch that selects one of the
two output assignments as well as the associated delay time.
Switch position left
If the rotary coding switch is set to one of the positions in the left dark-gray field, the outputs
1 to 6 are assigned the subsequent event signals:
1. Tripping operation due to overload (L)
2. Short-time delayed short-circuit release (S)
3. Instantaneous short-circuit release (I)
4. Ground-fault tripping (G)
5. Ground-fault alarm signal
6. Tripping operation due to overload in the neutral conductor (N)
Switch position right
If the rotary coding switch is set to one of the positions in the right light-gray field, the outputs
1 to 6 are assigned the following functions:
1. Leading signal of overload trip (delay time 0 s)
2. Fault in trip unit (ETU)
3. Load shedding
4. Load pick up
5. Temperature alarm
6. Phase unbalance current
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3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02