Other Settings - MarelliMotori MEC-100 Manuel De L'utilisateur

By the term maximum reactive power it is meant the reactive power which can be obtained with rated voltage, rated
current and power factor PF=0, that is at zero active power.
If one of the two limits is modified and the current reactive power setpoint is outside the new defined range, the
setpoint is automatically brought to the just modified limit value.
Excitation Current Setpoint:
❑
Reactive Power (%): enter in this field the excitation current setpoint you like to keep, expressed in percentage with respect
to the rated excitation current (the maximum and minimum limits are established in the following two fields, with minimum
increase of 1%).
❑
Minimum Limit (%): enter in this field the minimum value which the excitation current setpoint can reach, expressed in
percentage with respect to the rated excitation current (0% to 100% with min. increase of 1%).
❑
Maximum Limit (%): enter in this field the maximum value which the excitation current setpoint can reach, expressed in
percentage with respect to the rated excitation current (1% to 120% with min. increase of 1%).
PAY PARTICULAR ATTENTION TO THE SELECTION AND/OR MODIFICATION OF THE SETPOINT VALUES.
The limit thresholds set by the MEC-100 Interface System to the setpoint values do not protect against the selection
of setpoints which may be potentially dangerous for the generator and for devices and/or installations connected to
the generator. In all configuration operations of the MEC-100 Interface System, always check that the new setpoints
to be entered are appropriate to the generator and the devices and/or installations connected to the generator.

5.7.4. Other Settings

In Fig. 5.7.4.a the configuration area relative to other functions is shown.
Soft Start (see Par. 3.10):
❑
Soft Start Time (s): enter in this field the time required by the voltage ramp, at the excitation Start-up, to reach the setpoint
value defined in the setpoints window, see Par. 5.7.3 (0 to 3600s, with minimum increase of 1s).
Traverse rate:
❑
Voltage (%/s): enter in this field the variation speed of the generator voltage setpoint when this last is modified by means of
the UP/DOWN contacts or the corresponding buttons of the MEC-100 Interface System see Par. 5.3.2 (0.1%/s to 5%/s,
with minimum increase of 0.1%/s).
❑
Power Factor (hundredthsPF/s): enter in this field the variation speed of the power factor setpoint when this last is modified
by means of the UP/DOWN contacts or the corresponding buttons of the MEC-100 Interface System, see Par. 5.3.2
(1hundredthsPF/s to 10hundredthsPF/s, with minimum increase of 0.1hundredthsPF/s).
❑
Reactive Power (%/s): enter the variation speed of the reactive power setpoint when this last is modified by means of the
UP/DOWN contacts or the corresponding buttons of the MEC-100 Interface System, see Par. 5.3.2 (0,1%/s to 5%/s, with
minimum increase of 0.1%/s).
963857137_M
Fig. 5.7.4.a
Other Settings Area
MEC-100 – Marelli Motori
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