Ascon Tecnologic - B05B - OPERATING INSTRUCTIONS - PAG. 2
2 digital inputs
for
free of voltage contacts
(1 is on the P03
display panel). The
4 outputs
can be used to
control the
compressor
or the
temperature control device
, the
de-
froster
, the
evaporator fans
and a
configurable auxiliary
device
(Light, Alarm, etc.)
The
3 temperature probe inputs
can be used to
control the
cell temperature
, measure the
evaporator temperature
,
and measure an
auxiliary temperature
(e.g. product tem-
perature, condenser temperature, etc.).
One digital input
is always available on
the control unit
and,
as an
alternative
to
Pr2
and
Pr3
temperature probe inputs,
2 other digital inputs
can be configured; the
P03 display
panel
has an additional digital input.
Digital inputs
can be
configured
to
execute various functions
such as
cell
door signal
,
defrost commands
, the
selection of a differ-
ent temperature-control set point
,
reporting an external
alarm
, to
activate a continuous cycle
, to
activate the
auxiliary output
, etc..
The sistem is also equipped with an
alarm voltage function
that provides to
disable the outputs
if
the mains
voltage is
too high
or
too low
.
The
function selection
and
operating parameters pro-
gramming
is done by the
4 keys
(mechanical or capacitive)
present on the operator panel.
The
connection between
the
B05B
and the display panel
P03CB/P34B
is made via a
thin three poles cable
that also
provides
the
power supply
to the
operator panel
.
1.2
HMI Front Panel description
1.2.1
P03CB Display Unit/Operator Panel
7
6
5
8
3
4
2
1
9
10
11
1.2.2
P34B Display Unit/Operator Panel
P34B
P
U
trb
4
2
1
5
7
13
12
8
6
3
10
1.
/ :
Pressed for 1 s enables the
ECO
function or
forces
the instrument
in
Standby/Run status
(the function
selection is made with parameter
UF
). Pressing /
together with the / key for 5 s allows to enter in
parameter programming mode. Pressing / together
with the key for 5 s allows to display the instrument
variables (measured temperatures etc.). In programming
mode / can be used to return in normal mode.
2.
/ :
Pressed and released is used to access the Set
Point change function and modify the
SP
value. In normal
mode (pressed for 5 s) can be used to
start/stop a manual
defrost
. In parameter programming or variables display
mode is used for selecting the parameters and for increas-
ing the values to be set. In programming mode, if pressed
together with the / key allows to modify the param-
eters programming level. When pressed together with the
/ key for more than 5 s locks/unlocks the keyboard.
3.
/
turbo
:
Pressed and released is used to access
the Set Point change function and modify the
SP
value.
Pressed for 5 s allows to
enable/disable
a
turbo control
mode cycle
. In parameter programming or variables
display mode is used for selecting the parameters and for
decreasing the values to be set.
4.
/ :
Pressed for 1 s allows to
manually enable/disable
the
Output
configured as “
Light
” (the function selection is
made with parameter
Fb
). Pressing / together with
the / key for 5 s allows to enter in parameter pro-
gramming mode. In programming mode / is used
to access parameter editing and value confirmation. In
programming mode, if pressed together with the
/
key allows to modify the parameters programming level.
When pressed together with the
/
key for more than
5 s locks/unlocks the keyboard.
5. LED SET:
In normal mode shows when a key is pressed.
In programming mode
SET
indicates the programming
level of the parameters.
6. LED
: Indicates the output status (compressor or
temperature control device) when the instrument is
programmed for
cooling/heating operation (cooling
operation for P34)
:
ON
(lit up),
OFF
(turned OFF) or
inhibited
(blinking).
7. LED :
Indicates that the
defrost
is in
progress
(
ON
)
or
drainage time in progress
(blinking).
8. LED
: Indicates fan evaporator output status
ON
(on),
OFF
(off) or
inhibited
(blinking).
9. LED
:
On the
P03
indicates that the
ECO function
is enabled
. The
P34
shows the label
Eco
when in
Eco
mode alternated to the normal display.
10. Decimal Point/Stand by:
When the instrument is placed
in Stand by mode, this is the only lighted LED. During
the normal operation is the decimal separator.
11. Engineering Unit LED:
Displays the temperature meas-
urement unit in usage
°C
/
°F
(
P03 only
).
12. LED :
On the
P34
shows the
Alarm status
(
ON
), off
(
OFF
) and Acknowledged or Lached (
blinking
).
13. LED :
On the
P34
indicates the output status (com-
pressor or temperature control device) when the instru-
ment is programmed for
heating operation
:
ON
(lit up),
OFF
(turned OFF) or
inhibited
(blinking).
