Emerson Dixell IEV12D Installing And Operating Instructions page 45

LoP Minimum
operating
pressure
HSH Maximum
super heating
value
LSH Minimum
super heating
value
1592026270 IEV12-14D GB r.1.0 21.02.2019
Evaporation Automatic action of the controller to
pressure < LOP counteract the LoP;
activation Active alarm relay output if enabled
threshold by parameter;
delayed by Et39 Enable the buzzer;
seconds icon flashes;
Code of alarm on the display.
Super heating Automatic action of the controller to
value > High counteract the HSH;
superheating Active alarm relay output if enabled
threshold Et12 / by parameter;
Et32 delayed by Enable the buzzer;
Et41 seconds icon flashes;
Code of alarm on the display.
Super heating Automatic action of the controller to
value < Low counteract the LSH;
superheating Active alarm relay output if enabled
threshold Et13 / by parameter;
Et33 delayed by Enable the buzzer;
Et42 seconds icon flashes;
Code of alarm on the display.
IEV
Automatic.
The condition to
come out from
minimum
operating
pressure are:
- the equivalent
temperature of
the pressure
probe exceeds
Et17/Et37 +
4.0°C
- Et17 <
Evaporation
pressure
converted to
temperature <
Et17+4°C and
superheating <
Et13 (low
superheating set
point)
After LOP alarm
reset, the driver
carries out the
aperture of the
valve by
Et16/Et36 steps
at each second
of operation
Automatic when
the superheating
is less or equal
to Et12/Et32 –
1.0°C
Automatic when
the superheating
temperature is
higher or equal
to Et13/Et33 +
1.0°
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