Ascon Tecnologic - e34B - OPERATING INSTRUCTIONS - PAG. 6
5. FUNCTIONS
5.1
ON/Stand-by function
Once powered the instrument can assume 2 different conditions:
ON
: Means that the controller uses the control functions.
STAND-BY:
Means that the controller uses no control function and
the display is turned off except for the Stand-by LED.
The transition between Standby and ON is equivalent to
power ON the instrument providing the electrical power
In case of power failure, the system always sets itself in the
condition it was in before the black-out
The ON/Stand-by function can be selected:
–
With the key
/ pressed for 1 s if
tUF
=
3
;
–
Using the Digital Input if parameter
iFi
=
7
;
5.2
Normal, Economic and Turbo operation
The instrument allows to pre-set 5 different control Set
points, 3 of which (
SP1
,
SP2
,
SP3
) are
Normal
, one
SPE
is
Economic
(or Eco) and one
SPH
Turbo
.
Associated with each Setpoint there is the relative differential
(hysteresis):
Normal
-
rd
,
Eco
-
rEd
and
Turbo
-
rHe
.
As already explained at paragraph “
2.1 - Quick setting of the
normal Set Point
” the “
Normal
” operating set point can be
only
1
(
Sp1
if
tEd
=
1
) or selectable between 3 preset values (
SP1
,
SP2
,
SP3
if
tEd
=
2
).
Note:
In the following examples the Set point is generally
indicated as
SP
, however the instrument
operates on
the basis of the active Set Point
.
5.2.1
Normal/Eco operation selection
This function can be used when you need to switch two func-
tional temperatures (eg. Day/Night or week-day/week-end).
Pr1
Temp.
SPE
SP
Door
rd
rEd
iEt
time
Normal
DAY (Shop open)
DAY (Shop open)
NIGHT (Shop closed)
Normal
eco
Out
L1
ON
OFF
ON
Example of automatic
ECO
/
Normal
mode activation. during
the business hours the door is opened frequently and the
controller remains in
Normal
mode. After the
iEt
time has
elapsed since the door has not been opened anymore, the
controller switches to
ECO
mode. As soon as the door is
opened again, the controller returns to
Normal
mode.
The Normal/Eco operation can be selected in manual mode:
–
Using the
/ key if parameter
tUF
=
2
;
–
Using the Digital Input if parameter
iFi
=
6
.
The Normal/Eco operation can be selected in automatic mode:
–
Elapsed the
iEt
time after the door has been closed
(Normal/Eco switching).
–
At door opening if the
SPE
Setpoint is activated by
iEt
parameter (Eco/Normal switching).
–
Elapsed the
itt
time after the door has been closed and
from the activation of
SPE
Setpoint (Eco mode) by
iEt
parameter (Eco/Normal switching).
To use this function, it is necessary to set the Digital Input as:
iFi
=
1
,
2
or
3
(door open Input).
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.
