Ascon Tecnologic - e33B - OPERATING INSTRUCTIONS - PAG. 6
If
iEt
=
oF
the selection of Eco/Normal modes via the digital
input is disabled.
If
itt
=
oF
the time-out switching from Eco to Normal mode
is disabled.
Temp.
SPE
SP
rd
rEd
iEt
(1)
iEt
time
Normal
Normal
eco
iTt
(2)
Pr1
Switching to Economic mode is indicated by the label
Eco
.
In addition, the selection of the
Eco
mode is always com-
bined with the function of turning OFF the output configured
as
L1
(showcase light).
5.2.2
Turbo/Normal/Eco mode selection
Turbo
mode can be used manually when, after a refrigerator
load phase, a products temperature decrease is required.
It can instead be used automatically to allow the recovery of
the products temperature at the end of an Economic cycle.
Turbo
mode can be selected manually:
–
Pressing
/
turbo
and maintaining it pressed for 5 s;
–
From digital input if parameter
i.Fi
=
8
;
Turbo
mode can be selected automatically:
–
Leaving
Eco
mode (only if
rHC
=
C3
)
–
Every time the instrument is switched ON (only if
rHC
=
C3
and
Pr1
>
SPE
+
rEd
)
The instrument quits
Turbo
mode automatically at the end of
rtC
time or manually using the programmed command (key or
digital input), the instrument always returns to
Normal
mode.
Setting
rHC
=
C3
the operating cycle is:
–
At power ON, the instrument starts in the mode it was in
when it was switched OFF (
Normal
or
Eco
) unless the tem-
perature at power ON is >
SPE
+
rEd
. In this case (see
the drawing) a
Turbo
cycle is automatically started.
–
After time
rtC
the instrument automatically switches to
Normal
mode.
–
If the door is opened frequently, the instrument remains in
Normal
mode. If however the door is not opened for time set
at
iEt
parameter, it automatically switches to
Eco
mode.
–
The instrument remains in
Eco
mode until the door is
opened again or, if set, until the time-out
itt
.
–
On leaving
Eco
mode the instrument therefore runs a
Turbo
cycle to allow product temperature to be restored,
after which it reverts to
Normal
mode and so on.
Temp.
SPE
SP
SPH
rHd
rEd
itt
(2)
rtC
rtC
time
Normal
Turbo
Turbo
iEt
(1)
rd
Pr1
eco
Notes: 1.
The time
iEt
is reset every time the door is ope-
ned, in the case shown the door is always closed.
2.
The
itt
time is stopedas soon as the door is
opened, the instrument immediately switches
to
Turbo
mode. In the case shown, the door is
always closed.
5.3
Measure and display configuration
With parameter
iuP
it is possible to select the tempera-
ture engineering unit and the desired measure resolution
(
C0
= °C/1°;
C1
= °C/0.1°;
F0
= °F/1°;
F1
= °F/0.1°).
The instrument allows the measure calibration, which can
be used to recalibrate the instrument according to applica-
tion needs, the calibration is made by using parameters
iC1
(input Pr1),
iC2
(Pr2 input) and
iC3
(Pr3 input).
Parameters
iP2
/
iP3
allow to select the controller usage of
Pr2
/
Pr3
probe measure as:
EP
Evaporator probe
: used to manage the defrost and
the evaporator fans (see relative functions).
Au
Auxiliary probe
: can be used as a display-only probe,
but it is also possible to associate temperature alarms
(possible uses: product probe, anti-freeze probe, etc.);
DG
Digital Input only for
Pr3
input.
If probe input is not used, set
iP2
or
ip3
=
oF
.
Two inputs cannot be set to perform the same function.
If two inputs are set to do the same function, this is done
only by the
Pr2
input.
Using
iFt
parameter is possible to set a software filter to
decrease the input sensibility to rapid temperature changes,
increasing the sampling time, to stabilize the reading of the
measurement inputs.
In addition to this filter there are other two similar filters used
only for the
Pr1
probe measure visualization, these regard the
increasing (
tdu
parameter) and the decreasing (
tdd
) of
Pr1
measurement to avoid to display fast temperature variations.
The filter blocks the maximum decrement displayed at 0.1°
every
tdd
seconds and the maximum increase displayed
every
tdu
seconds. These filters are reset at power OFF.
Through the
idS
parameter is possible to set the variable
normally displayed:
P1
Pr1
probe measurement;
P2
Pr2
probe measurement;
P3
Pr3
probe measurement;
SP
Active Set Point;
Ec
Pr1
probe measure if the instrument is in
Normal
mode, the label
Eco
if the instrument is in
Eco
mode;
oF
If the numerical display must be switched OFF.
When one of the measures is displayed (
idS
=
P1
/
P2/P3
/
Ec
)
the
iCU
parameter allows to set an offset that is applied only
to the displayed variable (all controls are made according to
the correct temperature value, changed only by the calibra-
tion parameters).
Regardless of what is set at
idS
parameter, all the measure-
ment variables can be shown as descibed at paragraph: “
2.7
- Variables display
”.
It is also noted that the
Pr1
probe display can also be changed
by “
Defrost display lock
” function via the
ddL
parameter
(see the
Defrost function
).