CIRCUTOR MDC-20 - Manual (Page 32)

MDC-20
Page 32 of 58 User Manual
sync with the main meter. This sync pulse output must lead to one of the unit inputs to
be synchronised, in this case, the MDC-20. The input used for synchronisation must be
configured in the corresponding field after selecting the external synchronisation
checkbox. It is understood that there is a sync pulse when there is a change in the logic
state from 0 to 1 in the variable or configured input. If the external synchronisation box is
not selected, the internal clock of the MDC-20 will be used for synchronisation.
8.1.2 Alarms
The unit has two very useful alarms for managing the installation that can be used so that the
system warns the user of any anomaly.
Fig.8-3 . – Alarm setup screen.
• Control alarm: Variable or physical output to be activated as an alarm in case of
exceeding the maximum power configured in the MDC-20 and the unit has no more
loads to disconnect.
• Communications alarm: Variable physical output to be activated as an alarm if one of
the installation units does not communicate with the controller or is in any of the error
states.
8.1.3 Safety margin over the setpoint (%):
• Safety margin in % over the maximum set point at the end of a period. For example, if
you configure 10% in the set point margin and the maximum energy is 150 kWh, your
real set point will be: 150-10%=135 kWh
Fig.8-4 . – Configuration of safety margin
8.1.4 Simulation
The information entered in these fields is only used in the simulation window (see section0). The
simulation shows how the system will respond when it starts working. The more accurate the
information entered, the more real the simulation by the program.
Fig.8-5 . – Simulation configuration screen
• Uncontrolled load (kW):Enter in this field the total power of the installation not subject
to power control (loads not controlled by the MDC-20), which generally coincide with
priority loads that cannot be disconnected.
• Variation factor (%): Variation of total power of installation in %, so that the simulation
does not always work with the maximum theoretical values configured and is more real.