Ascon Tecnologic - e33 - OPERATING INSTRUCTIONS - PAG. 7
5.4
Digital input configuration
The digital input function (available on
terminal 12
or instead
of
Pr2
input if
ip2
=
dg
) is defined using the
iFi
parameter
and the action is delayed for the time programmed with pa-
rameter
iti
. The
iFi
parameter can be configured for the
following functions:
0
Digital input not active;
1
Cell door opening with NO contact: at input closure (and
after the
iti
) the instrument alternately displays
oP
and the
variable set at
idS
parameter. This DI operation mode ac-
tivates also the time set with parameter
AoA
elapsed which
the alarm is activated to warn that the door has been left
open. In addition, at door opening, the instrument returns to
Normal
operation if it was in
Eco
mode and the
Eco
mode
activation was enabled through parameter
iEt
;
2
Cell door opening with NO contact: Similar to
iFi
=
1
but with evaporator fans stop. In addition, at open door
alarm intervention (
AoA
), the fans are restarted;
3
Cell door opening with compressor and fan outputs lock
and NO contact: similar to
iFi
=
2
but with compressor
and fans lock. At open door alarm intervention (
AoA
)
both the fans and the compressor are re-activated.
4
External alarm signal with NO contact: at input closing
(and after the
iti
time) the alarm is activated and the
instrument alternately shows on the display:
AL
and the
variable set with parameter
idS
;
5
External alarm signal with all control outputs disabled
and NO contact: at input closing (and after the
iti
time)
all the control outputs are disabled, the alarm is activated
and the instrument alternately shows on the display:
AL
and the variable set with parameter
idS
;
6
Normal/Eco mode selection with NO contact: at input clos-
ing (and after the
iti
time) the instrument switches to
Economic
operation mode. Opening the digital input, the
instrument returns in
Normal
operation mode.
7
Instrument On/Off (stand-by) selection with NO contact:
at input closing (and after the
iti
time) the instrument
is switched ON while it is placed in Stand-by mode when
the digital input is open;
8 Turbo
activation
command with NO contact: at input
closing (and after the
iti
time) the instrument starts a
Turbo cycle;
9 Defrost
activation
command with NO contact: at input
closing (and after the
iti
time) the instrument starts a
defrost cycle;
10 End-Defrost
command with NO contact: at input closing
(and after the iti time), if the defrost cycle is in progress
the instrument stops it, otherwise inhibits the defrost start;
-1... -10
- Features identical to the above but obtained
through a NC contact and a reversed logic operation.
5.5
Outputs and buzzer configuration
The instrument outputs can be configured by the relative pa-
rameters
oo1
,
oo2
and
oo3
. The outputs can be configured
for the following functions:
ot
To control the temperature control device (e.g. Compres-
sor). To manage the cooling control device for neutral zone
control or Cooling/Heating (
rHC
=
nr
or
HC
);
df
To control the defrosting device;
Fn
To control the evaporator fans;
Au
To control the auxiliary device;
At
To control a silenceable alarm device through a contact
that is NO in normal operation then closed when the
alarm sounds;
AL
To control an alarm that cannot be silenced through a
contact that is NO in normal operation then closed when
the alarm sounds;
An
To control an alarm with a memory function through a
contact that is NO in normal operation then closed when
the alarm sounds (see alarm memory);
-t
To control a silenceable alarm device through a contact
that is NC in normal operation then closed when the
alarm sounds;
-L
Control an alarm that cannot be silenced through a con-
tact that is NC in normal operation then closed when the
alarm sounds;
-n
To control an alarm with a memory function through a
contact that is NC in normal operation then closed when
the alarm sounds;
on
To command a device that must be turned ON when the
instrument is ON. The output is therefore deactivated
when the instrument is not powered or is in standby
mode. This mode of operation can be used as a control
of the shop window lighting, anti-fogging resistors or
other utilities;
HE
To control a heating device in neutral zone or Cooling/
Heating control mode (
rHC
=
nr
or
HC
);
oF
Output disabled.
If one of the outputs is configured as auxiliary output (
oo1
/
oo2
/
oo3
=
Au
), its function is set by parameter
oFo
and its opera-
tion can be conditioned by the time set to at parameter
otu
.
Parameter
oFo
can be configured for the following functions:
oF
Auxiliary output not active;
1
Temperature control output delayed with NO contact:
the auxiliary output is activated with a delay that can be
set with parameter
otu
applied to the output configured
as
ot
. The output is then turned OFF at the same time
as the
ot
output is disabled. This function mode can be
used as a command for a second compressor or for all
other working utilities according to the same ot output
conditions, but which must be delayed after the start up
of the compressor to avoid excess electricity absorption;
2
Activation by front key (
or
): the output is activated
by pressing the keys
or
suitably configured (
tUF
or
tFb
=
1
). These commands have a bi-stable (toggle)
function (at first pression the output is activated, at the
second is disabled). In this mode, the
Aux
output can be
turned OFF automatically after the time set at parameter
otu
. When
otu
=
oF
the output is activated and deac-
tivated only manually, using the
or
keys or via the
digital input. Differently, the output, once activated, is
turned OFF automatically after the
otu
time. This mode
of operation can be used as a control of the shop win-
dow lighting, anti-fogging resistors or other utilities;
3
Shop window light managed by Normal/Eco mode. This
output will be ON in Normal mode and OFF when in Eco
mode operation.
4
Internal Light output managed by digital input. This out-
put will be ON when door is opened (
iFi
=
1
,
2
,
3
).
If present, the internal buzzer can be configured by param-
eter
obu
for the following functions:
oF
Buzzer always disabled;
1
The Buzzer sounds when an alarm is active;
2
The Buzzer sounds when a key pressed (no alarm);
3
The Buzzer sounds when a key pressed and when an
alarm is active.
