Video display
When the value of the main temperature
(thermostat control) probe exceeds the
band defined by parameters “SHH” and
“SLH” for longer than “drA” (
caution:
they
can be absolute or relative values depend-
ing on parameter “Att”) the alarm is gen-
erated and a LED lights up permanently.
If present, the internal buzzer and the
alarm relay are also switched on.
If you press any button on the unit, the
alarm LED flashes to indicate that the
alarm has been read by the user.
When the probe value returns within the
permitted band, the LED will remain in the
condition it was in previously (permanently
on or blinking) to signal the event.
NOTE:
To prevent false HACCP alarms,
alarm exclusion times are used (see table
of parameters, ALARMS/HACCP section,
especially par. dAO, H51).
ALARM LOGGING AFTER A BLACK OUT
If a reset event occurs (machine black-
out), two new folders are generated in the
AL folder in order to assess the conditions
of the power source correctly:
•“bCn”(n = 1…8)*;
•“btn”(n = 1…8)*;
*n is a number between 1 and 8 that indi-
cates the number of machine resets.
“bCn” folder
If the thermostat control probe reads a
temperature value that is within the band
limits preset by the values SLH and SHH
following a black out, this folder will con-
tain this value (and the “btn” folder will
contain the value zero).
If the thermostat control probe reads a
value that exceeds the permitted tempera-
ture range, an HACCP alarm is generated
The maximum (or minimum) value
reached by the thermostat control probe
is logged in this folder.
“btn” folder
If the thermostat control probe reads a
temperature value that is within the band
limits preset by the values SLL and SHH
following a black out, this folder will con-
tain the value zero.
If the thermostat control probe reads a
value that exceeds the permitted tempera-
ture range, an HACCP alarm is generated
The period of time that the thermostat
control probe remains out of band limits
will be logged in the same way as for nor-
mal operating in this folder.
Video display
If there are more than 8 (eight) black out
events, folder bC8 flashes and the subse-
quent events are recorded starting with
folders bC1(bt1).
RESET FUNCTION
The RES function (HACCP reset) manually
cancels the HACCP alarms and can be
associated with a button (see parameters
H31…H33; set to 4 to reset) with a delay
set by parameter H02. The RES function
cancels the folders HCn, tCn, bCn, btn
(n=1…8) and resets the drH parameter
(the counter starts). The alarm LED
remains off whereas the display flashes to
indicate that the parameter has been
reset.
After a period of time set by parameter
drH (if not 0) after the last reset, all the
HACCP alarms are automatically deleted. If
the machine is subjected to another black-
out in this period, the counter will be
reset with the value preset with parameter
drH and the next automatic reset will
occur when this value has been reached.
NOTE:
When the unit is switched on for
the first time, any alarms present must be
manually deleted using this function.
ADVANCED FUNCTIONS
LINK (for /CK models only)
The Link function is used to connect up to
8 instruments (1 Master device and 7 slave
and echo devices). The distance between
one device and another must be 7 metres
maximum whereas the maximum distance
between the first and last instrument in
the network must be approximately 50m.
PLEASE NOTE
: the serial link between the
devices is powered.
Master
Instrument that controls the networks and
sends commands to the Slaves. The Master
is selected using parameter L00 (the value
0 defines the Master)
Slave
Instrument(s) supplied with own controls
that also perform(s) commands issued by
the Master (with parameters L00..L07).
Echo
Instrument(s) that only display(s) the values
of the instrument that it is associated with
(it does not therefore have its own I/O
resources but only serves as a repeater).
PLEASE NOTE
: only one Echo can be con-
nected to the same instrument (Master or
Slave; if it is connected to a Slave, you must
set parameter L04=n).
Defrosting
The Link network controls defrosting. The
Master sends the defrost command which
can be performed synchronously (at the
same time) or sequentially (one defrost
after another) without affecting the normal
protections or delays for each instrument
(see parameter L03).
Other Functions
The Master can also activate the functions
associated with buttons or the Digital Input
for all the Slaves: switching lights on/off,
alarm silencing, auxiliary set point, auxiliary
relay, stand-by (on/off) and functions relat-
ed to Night & Day controller (see parame-
ter L05).
The Master can also synchronize the dis-
plays on the Slave or Echo devices with the
display on the Master or a Slave (for the
Echo devices) (see parameter L04).
NOTE: synchronized defrosting refers to
actual defrosting and not to dripping and
subsequent defrosting. The defrost LED on
the Slave units blinks when synchronized
defrosting has terminated and the Slaves
are awaiting for the thermostat control to
be enabled by the Master.
The functions are associated with the
instruments by correctly setting the para-
meters (see the parameter table for the
“Lin” label folder)
NIGHT & DAY CONTROL
The Night & Day control algorithm can be
used to set events and cycles at predefined
times of the week. You can set an event
start time and duration, as well as func-
tions and defrostings (daily or holidays) to
be enabled for each day of the week. By
pressing the “set” button when the “nad”
label appears, the label d0 (day 1) is dis-
played in the “Programming” menu.
Tip: consider d0 = Sunday)
. Use the “UP”
and “DOWN” buttons to set other days
(d1 (day 2 = Monday)…d6 (day 7 =
Saturday)) and Every Day.
By pressing “ENTER” the first parameter
E00 is displayed; use the “UP” and
“DOWN” buttons to scroll through other
parameters E01…03. If you do not use the
keyboard for over 15 seconds (time-out),
or if you press the “fnc” button once, the
last value shown on the display is con-
firmed and you return to the previous
screen mask.
The different functions are set using the
appropriate parameters (see the parameter
table for the folder with the “nad” label)
DEFROST CONTROL
The instrument can be used to select dif-
ferent types of defrosting with the para-
meter
dty, defrost type
.
(defrost execution mode).
The dty parameter can have these values:
0 = electrical defrosting; the compressor is
turned off.
1 = cycle reversing defrosting (hot gas);
the compressor continues operating.
2 = Free mode defrosting (compressor dis-
abled).
ID 983-985 LX (/C /CK) HACCP
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