Communication And Events; Generator; Genset Frequency - Sices GC250 Technical Manual

9.2.4 Communication and events

The controller records any change of the mains status in the events log, if it is enabled with bit
1 of the P.0441 parameter:
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The following feature for the configuration of the digital outputs related to the mains status is
also available:
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In addition, the controller makes available the mains statuses for the AND/OR logics by means
of the following internal statuses:
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9.3
The controller acquires generator (single or three-phase) voltage and frequency in order to
protect the loads and the generator itself from operating outside its tolerance thresholds. To
connect the generator to the controller, see par. 5.10.

9.3.1 Genset frequency

Several parameters are related to frequency measure of the generator:
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Let us see a practical example upon how thresholds work, with default values for the
parameters we have seen.
Parameter
P.0105
P.0228
EAAM057608EN
EVT.1010: Lack of mains voltage.
EVT.1011: Mains voltage present, but "out of tolerance".
EVT.1012: Network voltage present and "in tolerance".
DOF.3033 - "Mains within tolerance". The controller activates this output when the
mains voltages and frequency are in tolerance from the time configured.
ST.016 - "Mains voltage/frequency present"
ST.017 - "Mains out of tolerance or absent"
ST.018 - "Delay for mains within tolerance"
ST.019 - "Mains within tolerance".
ST.020 - "Delay for mains out of tolerance or absent"
P.0105: rated generator frequency. All frequency measure related thresholds are
expressed percentage of it.
P.0228: threshold (percentage of P.0105) under which the engine is considered idle.
P.0229: threshold (percentage of P.0105) above which the generator is considered
started.
P.0305: low voltage threshold (percentage related to P.0105) below this value the
generator cannot be connected to the loads.
P.0307: high voltage threshold (percentage related to P.0105) above this value the
generator cannot be connected to the loads.
P.0202: hysteresis applied to all the thresholds related to generator frequency. It is a
percentage value of P.0105.
Description
Rated frequency
Stopped engine threshold due
to frequency
Default value Frequency (Hz)
50 Hz 50
10.0 % 5
GC250 Technical Manual 91