Ascon Tecnologic - B05B - OPERATING INSTRUCTIONS - PAG. 9
SP
Active Set Point;
Ec
Probe
Pr1
measurement when the instrument is in Nor-
mal mode and the
Ec
label only when is in
Eco
mode;
F1
The
Pr1
probe measurement
filtered
through param-
eters
dd
and
du
;
oF
Numeric display OFF.
If one of the measurements (
dS
=
P1
,
P2
,
P3
,
Ec
,
F1
) is dis-
played, parameter
CU
allows to set an offset that is to be applied
to the variable display only (all adjustment controls will always
be in accordance with the correct calibration parameter).
Regardless of what set at parameter
DS
, all the instrument
variables can be displayed as explained at paragraph “
2.7 -
Variables display
”.
Note:
The Pr1 probe display can also be changed by the de-
frost display lock function set with parameter
DL
(see
the “
Defrost
” function).
5.4
Digital input configuration
All the parameters for configuring the digital inputs are con-
tained in the
-In
group.
The
P03 operator panel
has 1 digital input (
DI1
) for free of
voltage contacts whose function is defined by parameter
1F
and whose action is delayed by the time set at parameter
1t
.
The
P34 operator panel
has no digital input on-board.
The
B05 controller
always has a digital inputs (
DI4
) whose
function is defined by parameter
4F
. The B05 controller can
also have 2 more digital inputs for free of voltage contacts
(
DI2
and
DI3
) as an alternative to
Pr2
and
Pr3
probe inputs.
To use these inputs as digital ones, their relative param-
eters
P2
or
P3
must be set to
dG
(
P2
/
P3
=
dG
). The function
performed by these inputs configured as digital is defined by
parameters
2F
and
3F
.
The
DI2
action can be delayed by parameter
2t
, while the ac-
tion of
DI3
and
DI4
is instantaneous and can not be delayed.
The function performed by the instrument at
DI
o
activation is
set through parameters
1F
,
2F
,
3F
,
4F
:
0.
Digital input not active;
1.
Cell door opening with NO contact: at input closure the
instrument displays alternately
oP
and the variable set at
dS
parameter. With this mode of operation, the digital in-
put activates also the time set with parameter
oA
elapsed
which the alarm is activated to warn that the door has
been left open. In addition, at door opening, the instru-
ment returns to
Normal
operation if it was in
Eco
mode.
2.
Cell door opening with NO contact similar to
o
F
=
1
, but with
evaporator fans lock. At the intervention of the
Open Door
Alarm
(
oA
), the
evaporator fans
are powerd
ON
again.
3.
Cell door opening with NO contact similar to
o
F
=
1
, but
with compressor and evaporator fans lock. At the inter-
vention of the
Open Door Alarm
(
oA
), the
evaporator
fans
and the
compressor
are powerd
ON
again.
4.
External alarm signal with NO contact: at digital input
closure the alarm is activated, the instrument alternately
displays
AL
and the variable set at parameter
dS
;
5.
External alarm signal with control outputs disabling
(except alarm and light outputs) by NO contact: at digital
input closure the the control outputs are disabled, the
alarm is activated and the instrument alternately displays
the label
AL
and the variable set at parameter
dS
;
6.
Normal/ECO mode selection with NO contact: at digital
input closure the instrument switches to the
ECO
mode
operation. When the Digital Input is open, the instrument
is in
Normal
operation mode;
7.
Instrument Switching ON/OFF (Stand-by) by NO contact:
at digital input closure the instrument is switched ON
while it is placed in Stand-by when the contact is open;
8. Turbo
cycle activation command with NO contact: at
digital input closure the instrument starts a
turbo
cycle;
9.
Remote command of auxiliary output (
AUX
) with NO
contact: at digital input closure the instrument activates
the auxiliary output as described in the
Fo
=
2
operating
mode of the auxiliary output;
10, 11
- Not used;
12.
External
Pr
alarm with
ot
output disabling with NO con-
tact: at digital input closure the output set as
ot
is disa-
bled, the alarm is enabled and the instrument alternately
displays the label
PA
and the variable set at parameter
dS
;
13.
External
Hp
alarm with
ot
output disabling with NO con-
tact: at digital input closure the output set as
ot
is disa-
bled, the alarm is enabled and the instrument alternately
displays the label
HP
and the variable set at parameter
dS
;
14.
External
lp
alarm with
ot
output disabling with NO con-
tact: at digital input closure the output set as
ot
is disa-
bled, the alarm is enabled and the instrument alternately
displays the label
lP
and the variable set at parameter
dS
;
-1, -2, -3, etc.
- Features identical to the above but obtained
through a NC contact and a reversed logic operation.
Note:
Where multiple digital inputs are configured for the
same function, the instrument will treat the contacts
as if they were parallel (and consequently regard the
result as an
OR
function)
5.5
Outputs and Buzzer configuration
All the parameters for configuring the instrument ouputs are
contained in the
-Ou
group.
The instrument outputs can be configured by the relative
parameters
o1
,
o2
,
o3
,
o4
.
The outputs can be configured for the following functions:
ot
To control the temperature control device (e.g. the
compressor). In the case of neutral zone control
(
HC
=
nr
) to control the
cooling
device;
dF
To control the defrosting device;
Fn
To control the evaporator fans;
Au
To control the auxiliary device;
At
To control an alarm that can be acknowledged, the
output contact is normally open and closed in alarm;
AL
To control an alarm that cannot be acknowledged, the
output contact is normally open and closed in alarm;
An
To control a latched alarm, the output contact is nor-
mally open and closed in alarm;
-t
To control an acknowledgeable alarm device, the out-
put contact is normally closed and open in alarm;
-L
To control an alarm that cannot be acknowledged, the
output contact is normally closed and open in alarm;
-n
To control a latched alarm, the output contact is nor-
mally closed and open in alarm;
On
To control a device that must be ON when the instru-
ment is in ON state. The output is therefore disabled
when the instrument is not powered or is in stand-by
status. This mode can be used to control the shop win-
dow lights, the anti fogging resistance or other utilities;
