OSAKA
- USER MANUAL - B4U - v2 - PAG. 6
-
After closing the door, the time “Et” elapses and the Economic Set
Point “SE” is activated; Setting in the parameter "tt" the maximum
time that you want to allow operation in Economy mode with the door
closed (switching from Economy to Normal mode).
Example of automatic ECONOMIC-NORMAL mode operation.
During working hours, the door is opened frequently and the B4U
remains in NORMAL mode.
After the "Et" time has elapsed and the door has been closed for that
time, the B4U switches to ECONOMY mode. As soon as the door is
reopened, the B4U returns to normal mode.
For this automatic change function you must use a digital input
configured as
"1F / 2F / 3F / 4F" = 1, 2 or 3 (door open input).
If "Et" = oF,
the change from ECONOMIC mode to NORMAL through
digital input (configured as open door) will be disabled
.
If "tt" = oF,
the change from ECONOMIC mode to NORMAL for the
maximum time allowed in ECONOMIC mode with the door closed will
be disabled
.
(
1) - The time Et is reset every time the door is opened. In the case
of the example, the door is always closed.
(2) - Time tt stops when the door is opened and the B4U immediately
switches to NORMAL mode. In the case of the example, the door is
always closed.
When entering ECONOMY mode, the initials "Ec" will be shown on
the display.
In the event that the cabinet light is also used (output configured as
“L1”), the ECONOMIC mode selection is always associated with the
function of deactivating the auxiliary output.
“TURBO-NORMAL-ECONOMIC” MODE OPERATION:
The TURBO mode can be used manually when a rapid decrease in
product temperature is needed after the refrigerator is open.
Instead, it can be used automatically to allow product temperature
recovery at the end of ECONOMY operation.
TURBO mode can be switched manually:
- Through digital input if parameter "1F / 2F / 3F / 4F" = 8
TURBO mode can be switched automatically:
- Exiting ECONOMIC mode (only if "HC" = C3)
- Every time the B4U is started (only if "HC" = C3 and Pr1 greater
than SE + Ed).
In order for the TURBO mode to be automatically switched off, the
"tC" time must be expired or, if not, manually through the
programmed key or digital input, and the B4U will return to normal
mode.
When entering TURBO
mode, the initials “tr” will appear on the
display alternating, every 10 seconds, with the normal screen.
Setting "HC" = C3 the operating cycle is as follows:
When turned on, the B4U automatically goes into the mode it was in
before shutting down (Normal or ECO) unless the start-up
temperature is higher than SE + Ed. In this case, a TURBO cycle is
automatically started.
After the time “tC”, the B4U automatically switches to NORMAL
mode.
If the door is opened frequently, the B4U will switch to NORMAL
mode, if instead the door is not opened during the "Et" time, it will
automatically switch to ECONOMY mode.
The B4U remains in ECONOMY mode until the door is reopened or,
if configured, until the "tt" timeout.
When it exits the ECONOMY mode, the B4U performs a TURBO
cycle to recover the temperature of the products, then returns to the
NORMAL operating mode, and so on.
(
1) - The time Et is reset every time the door is opened. In the case
of the example, the door is always closed.
(2) - Time tt stops when the door is opened and the B4U immediately
switches to TURBO mode. In the case of the example, the door is
always closed.
5.3 - PROBE INPUTS CONFIGURATION AND DISPLAY
The parameters related to the configuration of the measurement
inputs are found in the group "-In". Using the parameter "uP" it is
possible to select the temperature measurement unit and the desired
measurement resolution (C0 = ° C / 1 °; C1 = ° C / 0.1 °; F0 = ° F / 1
°; F1 = ° F / 0.1 °).
The B4U allows the measurement to be calibrated, which can be
used to re-calibrate the equipment, according to the needs of the
application, by means of the parameter "C1" (input Pr1), "C2" (input
Pr2) and "C3" (input Pr3 ).
Parameters "P2" and "P3" allow selecting the use of the inputs by the
B4U according to the following possibilities:
= EP - Evaporator probe: the probe functions to control defrosts and
evaporator fans.
= Au - Auxiliary probe: It can be used as a display probe although it
is also possible to associate it with temperature alarms (Possibility of
using: product probe, anti-freeze probe, etc.)
= cd - Condenser probe: It can be used as a display probe although
it is also possible to associate it with temperature alarms, so that it
signals alarms related to condenser malfunction (eg dirty / plugged
condenser).
= dG - Digital input (see digital input functions)
If the input is not used, set "P2 and P3" = oF in the In folder.
It is not possible to configure the two inputs for the same function. If
the two inputs were configured for the same function, only the input
with the lower value will act.
Through the "Ft" parameter it is possible to set a software filter
relative to the measurement of the input value, so that we can reduce
the sensitivity and the rapid variation in temperature (increasing the
sampling time).
In addition to this filter, there are 2 other similar filters, but they are
used only to show the measurement of the Pr1 probe both for the
increase (parameter "du") and for the decrease (parameter "dd") and
thus avoid showing a rapid change in temperature.
The filter blocks the maximum reduction displayed at 0.1 ° every "dd"
second and the maximum increase displayed every "du" second.
At each connection, the filters are reset naturally.
In order to visualize the filtered measurement of Pr1, we will use the
parameter "dS" = F1, otherwise we will program "dS" = P1.
With the parameter "dS" it is possible to establish the standard
display of the screen between these options:
P1
: Measurement of the Pr1 probe.
P2
: Measurement of the Pr2 probe.
P3
: Measurement of the Pr3 probe.