Ascon Tecnologic - B05B - OPERATING INSTRUCTIONS - PAG. 10
HE
To control an heating device in neutral zone control
mode (
HC
=
nr
);
L1
Output of the shop window light managed by
Normal
/
Eco
mode. This output will be ON in
Normal
mode
and OFF in
Eco
mode operation;
L2
Output of the light internal to the cell managed by a
digital input. This output will be ON when door is open
(only if
o
F
=
1
,
2
,
3
);
-d
Defrost output with NC contact;
oF
Output disabled.
If one of the output is configured as
auxiliary
(
o
o
=
Au
),
the function carried out by auxiliary output is defined by the
parameter
Fo
and the function is conditioned by the time set
in parameter
tu
.
The parameter
Fo
can be configured for the following functions:
oF
Auxiliary output not active;
1.
Delayed temperature control output. The auxiliary output
is activated with a delay from the activation of the
ot
output, the delay can be set with parameter
tu
. The
Aux
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 condi-
tions, but which must be delayed after the start up of the
compressor to avoid excessive current absorption;
2.
Activation by digital input: the output is activated by a digital
input suitably configured (
o
F
=
9
). The commands have a
toggle function which means that at the first impulse, the
output is activated while at the second is disabled. In this
mode, the
AUX
output can be turned OFF automatically
after a certain time that can be set at parameter
tu
. With
tu
=
oF
the output is activated and deactivated only manu-
ally through a digital input. Differently, the output, once
activated, is turned OFF automatically after the
tu
time has
elapsed. This mode can be used to control the cell light,
the anti fogging resistances or other utilities.
The internal buzzer (when present) can be configured by
parameter
bu
for the following functions:
oF
Buzzer always disabled;
1.
The Buzzer signals the active alarms only;
2.
The Buzzer signals the key pressed only (no alarm);
3.
The Buzzer signals the active alarms (continuous sound)
and the key pressed;
4.
The Buzzer signals the active alarms (with intermittent
beep) and the key pressed.
5.6
Temperature control
All parameters relative to the temperature control are con-
tained in the
-re
group.
The instrument
control
is
ON/OFF
and acts on the
ot
and
HE
outputs
depending on the
PR1
probe measuring, the
active
Set Point(s)
S1
(or
S2
,
S3
,
SE
,
SH
), the Histeresys
d
(or
Ed
and/or
Hd
) and the function mode
HC
.
Through
HC
parameter is possible to set the following operations:
C
Cooling;
H
Heating;
nr
Neutral zone;
HC
Cooling and Heating with 2 independent Set Points;
C3
Cooling with 3 automatic modes of intervention.
5.6.1
Cooling and Heating (
C
or
H
)
SP
Temp.
d
time
off
off
SP
Temp.
d
time
ON
HC
=
C
HC
=
H
off
off
ON
ON
ON
ON
ON
ot
output
ot
output
Pr1
Pr1
Depending on the function mode programmed with parameter
HC
the differential is automatically considered by the control-
ler with positive values for a
Refrigeration
control (
HC
=
C
) or
negative values for a
Heating
control (
rHC
=
H
).
Note:
The
P03
display panel has only one LED to show the
Heat or Cool action, while the
P34
has 2 LEDs, one
for the
Heating
action and one for the
Cooling
action.
5.6.2
Neutral zone (
nr
)
S1
HE
output
ot
output
off
ON
Temp.
time
d
d
off
off
ON
ON
PR1
HC
=
nr
When
HC
=
nr
, the output configured as
ot
operates with
cooling
action (such as
HC
=
C
) while the output configured
as
HE
operates with
heating
action (as
HC
=
H
). In this
case, the set point for both outputs is the active one between
S1
,
S2
,
S3
,
SE
,
SH
and the intervention differential (
d
,
Ed
or
Hd
) is automatically considered by the controller as positive
for the cooling action and negative for the heating one.
5.6.3
Heating and cooling with 2 independent
Set Points (
HC
)
S1
SH
off
off
off
Temp.
time
d
Hd
off
off
off
ON
ON
ON
ON
ON
HE
output
ot
output
PR1
As in the previous case, when
HC
=
HC
, the output config-
ured as
ot
operates with
cooling
action (such as
HC
=
C
)
while the output configured as
HE
operates with
heating
ac-
tion (as
HC
=
H
), but now, the Set Point of the
ot
output is the
one
set as active
, while the one of the
HE
output is the
SH
Set Point. The intervention differential for the
ot
output is the
active one (
d
,
Ed
or
Hd
) and is considered by the controller
as
positive
(because is a
cooling
action) while the interven-
tion differential for the
HE
output is the
Hd
one and is consid-
ered
negative
(because is a
heating
action).
In this functioning mode, the activation of the
turbo
cycle
causes the instrument to operate with neutral zone setting
with
SH
Set Point.
