6.
MAIN FUNCTIONS
6.1
TO SET THE CURRENT TIME AND DAY (ONLY FOR INSTRUMENTS
WITH RTC)
When the instrument is switched on, it’s necessary to program the time and day.
1.
Enter the Pr1 programming menu, by pushing the SET +
n
keys for 3s.
2.
The rtc parameter is displayed. Push the SET key to enter the real time clock menu.
3.
The Hur (hour) parameter is displayed.
4.
Push the SET and set current hour by the UP and Down keys, then push SET to confirm
the value..
5.
Repeat the same operations on the Min (minutes) and dAy (day) parameters.
To exit: Push SET+UP keys or wait for 15 sec without pushing any keys.
6.2
HOW TO SEE THE SET POINT
1.
Push and immediately release the SET key: the display will show the Set
point value;
2.
Push and immediately release the SET key or wait for 5 seconds to
display the probe value again.
6.3
HOW TO CHANGE THE SET POINT
1.
Push the SET key for more than 2 seconds to change the Set point value;
2.
The value of the set point will be displayed and the “°C” or “°F” LED starts blinking;
3.
To change the Set value push the
o
or
n
arrows within 10s.
4.
To memorise the new set point value push the SET key again or wait 10s.
6.4
HOW TO START A MANUAL DEFROST
Push the DEF key for more than 2 seconds and a manual defrost will start.
6.5
HOW TO CHANGE A PARAMETER VALUE
To change the parameter’s value operate as follows:
1.
Enter the Programming mode by pressing the Set +
n
keys for 3s (the “°C” or “°F” LED starts
blinking).
2.
Select the required parameter. Press the “SET” key to display its value
3.
Use “UP” or “DOWN” to change its value.
4.
Press “SET” to store the new value and move to the following parameter.
To exit: Press SET + UP or wait 15s without pressing a key.
NOTE: the set value is stored even when the procedure is exited by waiting the time-out to expire.
6.6
THE HIDDEN MENU
The hidden menu Includes all the parameters of the instrument.
6.6.1 HOW TO ENTER THE HIDDEN MENU
1.
Enter the Programming mode by pressing the Set +
n
keys for 3s (the “°C” or “°F” LED starts
blinking).
2.
Released the keys, then push again the Set+
n
keys for more than 7s. The Pr2 label will be
displayed immediately followed from the HY parameter.
NOW YOU ARE IN THE HIDDEN MENU.
3.
Select the required parameter.
4.
Press the “SET” key to display its value
5.
Use
o
or
n
to change its value.
6.
Press “SET” to store the new value and move to the following parameter.
To exit: Press SET +
o
or wait 15s without pressing a key.
NOTE1: if none parameter is present in Pr1, after 3s the “noP” message is displayed. Keep the keys
pushed till the Pr2 message is displayed.
NOTE2: the set value is stored even when the procedure is exited by waiting the time-out to expire.
6.6.2 HOW TO MOVE A PARAMETER FROM THE HIDDEN MENU TO THE
FIRST LEVEL AND VICEVERSA.
Each parameter present in the HIDDEN MENU can be removed or put into “THE FIRST LEVEL” (user
level) by pressing “SET +
n
”.
In HIDDEN MENU when a parameter is present in First Level the decimal point is on.
6.7
HOW TO LOCK THE KEYBOARD
1.
Keep pressed for more than 3 s the UP + DOWN keys.
2.
The “POF” message will be displayed and the keyboard will be locked. At this point it will be
possible only to see the set point or the MAX o Min temperature stored
3.
If a key is pressed more than 3s the “POF” message will be displayed.
6.8
TO UNLOCK THE KEYBOARD
Keep pressed together for more than 3s the
o
and
n
keys, till the “Pon” message will be
displayed.
6.9
THE CONTINUOUS CYCLE
When defrost is not in progress, it can be activated by holding the “
o
” key pressed for about 3
seconds. The compressor operates to maintain the “ccS” set point for the time set through the “CCt”
parameter. The cycle can be terminated before the end of the set time using the same activation key
“
o
” for 3 seconds.
6.10
THE ON/OFF FUNCTION
With “onF = oFF”, pushing the ON/OFF key, the instrument is switched off. The “OFF”
message is displayed. In this configuration, the regulation is disabled.
To switch the instrument on, push again the ON/OFF key.
WARNING: Loads connected to the normally closed contacts of the relays are always supplied
and under voltage, even if the instrument is in stand by mode.
7.
PARAMETERS
rtc Real time clock menu (only for controller with RTC): to set the time and date and defrost start
time.
REGULATION
Hy Differential: (0,1 ÷ 25,5°C / 1÷255 °F) Intervention differential for set point. Compressor Cut IN is
Set Point + differential (Hy). Compressor Cut OUT is when the temperature reaches the set
point.
LS Minimum set point: (- 50°C÷SET/-58°F÷SET): Sets the minimum value for the set point.
US Maximum set point: (SET÷110°C/ SET÷230°F). Set the maximum value for set point.
Ot Thermostat probe calibration: (-12.0÷12.0°C; -120÷120°F) allows to adjust possible offset of
the thermostat probe.
P2P Evaporator probe presence: n= not present: the defrost stops by time; y= present: the defrost
stops by temperature.
OE Evaporator probe calibration: (-12.0÷12.0°C; -120÷120°F). allows to adjust possible offset of
the evaporator probe.
P3P Third probe presence (P3): n= not present:, the terminals 13-14 operate as digital input.; y=
present:, the terminals 13-14 operate as third probe.
O3 Third probe calibration (P3): (-12.0÷12.0°C; -120÷120°F). allows to adjust possible offset of the
third probe.
OdS Outputs activation delay at start up: (0÷255min) This function is enabled at the initial start up
of the instrument and inhibits any output activation for the period of time set in the parameter.
AC Anti-short cycle delay: (0÷50 min) minimum interval between the compressor stop and the
following restart.
rtr Percentage of the second and first probe for regulation (0÷100; 100 = P1, 0 = P2 ): it allows
to set the regulation according to the percentage of the first and second probe, as for the
following formula (rtr(P1-P2)/100 + P2).
CCt Compressor ON time during continuous cycle: (0.0÷24.0h; res. 10min) Allows to set the
length of the continuous cycle: compressor stays on without interruption for the CCt time. Can be
used, for instance, when the room is filled with new products.
CCS Set point for continuous cycle: (-50÷150°C) it sets the set point used during the continuous
cycle.
COn Compressor ON time with faulty probe: (0÷255 min) time during which the compressor is
active in case of faulty thermostat probe. With COn=0 compressor is always OFF.
COF Compressor OFF time with faulty probe: (0÷255 min) time during which the compressor is
OFF in case of faulty thermostat probe. With COF=0 compressor is always active.
DISPLAY
CF Temperature measurement unit: °C=Celsius; °F=Fahrenheit. WARNING: When the
measurement unit is changed the SET point and the values of the parameters Hy, LS, US, Ot,
ALU and ALL have to be checked and modified if necessary).
rES Resolution (for °C): (in = 1°C; dE = 0.1 °C) allows decimal point display.
Lod Instrument display: (P1; P2, P3, P4, SET, dtr): it selects which probe is displayed by the
instrument: P1 = Thermostat probe; P2 = Evaporator probe; P3 = Third probe(only for model with
this option enabled); P4 = NOT SET IT, SET = set point; dtr = percentage of visualization.
rEd X- REP display (optional): (P1; P2, P3, P4, SET, dtr): it selects which probe is displayed by X-
REP: P1 = Thermostat probe; P2 = Evaporator probe; P3 = Third probe(only for model with this
option enabled); P4 = NOT SET IT, SET = set point; dtr = percentage of visualization.
dLy Display delay: (0 ÷20.0m; resul. 10s) when the temperature increases, the display is updated of
1 °C/1°F after this time.
dtr Percentage of the second and first probe for visualization when Lod = dtr (0÷100; 100 =
P1, 0 = P2 ): if Lod = dtr it allows to set the visualization according to the percentage of the first
and second probe, as for the following formula (dtr(P1-P2)/100 + P2).
DEFROST
EdF Defrost mode (only for controller with RTC):
rtc = Real Time Clock mode. Defrost time follows Ld1÷Ld6 parameters on workdays and
Sd1÷Sd6 on holidays.
in = interval mode. The defrost starts when the time “Idf” is expired.
tdF Defrost type: EL = electrical heater; in = hot gas
dFP Probe selection for defrost termination: nP = no probe; P1 =thermostat probe; P2 =
evaporator probe; P3 =configurable probe; P4 = NOT SET IT.
dtE Defrost termination temperature: (-50÷50 °C/
-58÷122°F) (Enabled only when EdF=Pb) sets the temperature measured by the evaporator
probe, which causes the end of defrost.
IdF Interval between defrost cycles: (0÷120h) Determines the time interval between the beginning
of two defrost cycles.
MdF (Maximum) length for defrost: (0÷255min) When P2P = n, (not evaporator probe: timed
defrost) it sets the defrost duration, when P2P = y (defrost end based on temperature) it sets the
maximum length for defrost.
dSd Start defrost delay: ( 0÷99min) This is useful when different defrost start times are necessary to
avoid overloading the plant.
dFd Temperature displayed during defrost: (rt = real temperature; it = temperature at defrost start;
SEt = set point; dEF = “dEF” label)
dAd MAX display delay after defrost: (0÷255min). Sets the maximum time between the end of
defrost and the restarting of the real room temperature display.
Fdt Drip time: (0
÷
120 min) time interval between reaching defrost termination temperature and the
restoring of the control’s normal operation. This time allows the evaporator to eliminate water
drops that might have formed due to defrost.
dPo First defrost after start-up: (y = immediately; n = after the IdF time)
dAF Defrost delay after continuous cycle: (0
÷
23.5h) time interval between the end of the fast
freezing cycle and the following defrost related to it.
FANS
FnC Fans operating mode: C-n= runs with the compressor, OFF during defrost;
o-n = continuous mode, OFF during defrost;
C-Y = runs with the compressor, ON during defrost;
o-Y = continuous mode, ON during defrost;
Fnd Fans delay after defrost: (0÷255min) Interval between end of defrost and evaporator fans start.
Fct Temperature differential avoiding short cycles of fans (0÷59°C; Fct=0 function disabled). If
the difference of temperature between the evaporator and the room probes is more than the
value of the Fct parameter, the fans are switched on.
FSt Fans stop temperature: (-50÷50°C/122°F) setting of temperature, detected by evaporator
probe, above which fans are always OFF.
1592027350 XW60LS RTC GB r1.0 18.03.2015
XW60LS
2/5
