Operating Mode - Icar MCP4 Notice D'utilisation

SCROLL with +/MAX If pressed for 10 seconds, enters the setup session.
SCROLL with -/MIN
+/MAX with -/MIN
RESET/PHASE
with SCROLL
RESET/PHASE
with +/MAX
RESET/PHASE
with -/MIN

1.3 OPERATING MODE

Voltage protection
The input line voltage, measured in true RMS, is compared with the threshold value
programmed. If the voltage exceed the threshold for a time longer than 30 minutes, an
alarm is produced (V, phase and ALARM leds blinking) and the alarm relay is opened.
Current protection
The input current, measured in true RMS, is compared with the reference value set at
120% of nominal value (the primary current of CT). If the current exceed the threshold for
a time longer than 3 seconds, an alarm is produced (I, phase and ALARM leds blinking)
and the alarm relay is opened.
THD Protection
The current signal is processed to extract the total distortion value. Such a value is
compared with the programmed threshold: if the THD value exceed the actual threshold
(THD% High Current Threshold or THD% Low Current Threshold) for a time longer than
programmed, an alarm is produced (Thd%, phase and ALARM leds blinking) and the
alarm relay is opened.
Temperature protection
Temperature value is compared with the temperature threshold programmed: if the
temperature value exceed the threshold for a time longer than 10 seconds, the FAN is
lighted and the FAN relay is closed.
If the temperature exceed the sum of threshold and delta temperature, an alarm is
produced (Temp. and ALARM leds blinking), the alarm relay is closed and the FAN relay
is opened. This alarm can only be restored manually.
Operation timings
All protections have integral times, i.e. they keep into account the previous exceeding the
Special keys (two keys pressed)
Defines the actual measure as default measure to be displayed at
the power-on.
Starts the cyclic scanning of all the measure on the display every
3 seconds.
If pressed on power on changes connection mode 1-phase (as
MCP3) or 3-phase (as MCP4).
Activates manually the cooling devices relay.
Deactivates manually the cooling devices relay.
The contact of the cooling device control relay
is opened under temperature alarm condition.
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