dIXEL
Installing and Operating Instructions
1592026000
1592026000 XW20K GB R1.0 22.02.2008.doc
XW20K
2/5
+
To enter the programming mode.
+
To exit the programming mode.
5.1
USE OF LEDS
Each LED function is described in the following table.
LED
MODE
Function
ON
The compressor is running
FLASHING
- Programming Phase (flashing with LED
)
- Anti-short cycle delay enabled
FLASHING
Programming Phase (flashing with LED
)
ON
The defrost is enabled
FLASHING
Drip time in progress
ON
The Fast Freezing cycle is enabled
ON -
ALARM
signal
- In “Pr2” indicates that the parameter is also present in “Pr1”
ON
Continuous cycle is running
ON
Energy saving enabled
ON Light
on
ON
Auxiliary relay on (CX620 only)
°C/°F
ON
Measurement unit (CX620 only)
5.2
HOW TO SEE THE MIN TEMPERATURE
1.
Press and release the
n
key.
2.
The “Lo” message will be displayed followed by the minimum temperature recorded.
3.
By pressing the
n
key or waiting for 5s the normal display will be restored.
5.3
HOW TO SEE THE MAX TEMPERATURE
1.
Press and release the
o
key.
2.
The “Hi” message will be displayed followed by the maximum temperature recorded.
3.
By pressing the
o
key or waiting for 5s the normal display will be restored.
5.4
HOW TO RESET THE MAX AND MIN TEMPERATURE RECORDED
To reset the stored temperature, when max or min temperature is displayed :
1.
Press SET key until “rST” label starts blinking.
N.B. After the installation RESET the temperature stored .
5.5
HOW TO SEE AND MODIFY THE SET POINT
1.
Push and immediately release the
SET
key: the display will show the Set point value;
2.
To change the Set value push the
o
or
n
arrows within 10s.
3.
To memorise the new set point value push the
SET
key again or wait 10s.
5.6
TO START A MANUAL DEFROST
1. Push
the
DEF
key for more than 2 seconds and a manual defrost will start.
5.7
TO ENTER IN PARAMETERS LIST “PR1”
To enter the parameter list “Pr1” (user accessible parameters) operate as follows:
1. Enter the Programming mode by pressing the Set and DOWN key for
few seconds (
and
start blinking).
2. The instrument will show the first parameter present in “Pr1”
THE HIDDEN MENU
The hidden menu Includes all the parameters of the instrument.
HOW TO ENTER THE HIDDEN MENU
1.
Enter the Programming mode by pressing the
Set
+
n
keys for 3s (
and
start 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.
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.
5.8
HOW TO CHANGE THE PARAMETER VALUE
1.
Enter the Programming mode.
2.
Select the required parameter with
o
or
n
.
3.
Press the “
SET
” key to display its value (
and
LED starts blinking).
4.
Use
o
or
n
to change its value.
5.
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 new programming is stored even when the procedure is exited by waiting the time-out.
5.9
HOW TO LOCK THE KEYBOARD
1.
Keep the
o
and
n
keys pressed together for more than 3 s the
o
and
n
keys.
2.
The “POF” message will be displayed and the keyboard is locked. At this point it is
only possible the viewing of the set point or the MAX o Min temperature stored and
to switch ON and OFF the light, the auxiliary output and the instrument.
TO UNLOCK THE KEYBOARD
Keep the
o
and
n
keys pressed together for more than 3s.
5.10
ON/OFF FUNCTION (STAND BY)
By pushing the
ON/OFF
key, the instrument shows “OFF” for 5 sec. and the ON/OFF LED
is switched ON.
During the OFF status, all the relays are switched OFF and the regulations are stopped; if
a monitoring system is connected, it does not record the instrument data and alarms.
When the instrument is in stand by the keyboard displays “oFF”.
N.B. During the OFF status the Light and AUX buttons are active.
5.11
TO SEE THE PROBE VALUES
1.
Enter in “
Pr1
” level.
2. Parameters “dP1”, “dP2” “dP3” and “dP4” display the value of probes 1, 2, 3 and 4.
6. Parameter List
REGULATION
Hy Differential:
(0,1÷25,5°C; 1÷45°F): Intervention differential for set point, always positive.
Compressor Cut IN is Set Point Plus Differential (Hy). Compressor Cut OUT is when the
temperature reaches the set point.
LS Minimum set point limit:
(-50,0°C
÷
SET; -58°F÷SET) Sets the minimum value for the set point.
US Maximum set point limit:
(SET
÷
110°C; SET÷230°F) Set the maximum value for set point.
PROBE INPUTS
Ot Thermostat
probe
calibration (term. 1-2): (
(-12.0
÷
12.0°C/ -21
÷
21°F) allows to adjust possible
offset of the thermostat probe.
P3P Third probe presence (term. 4-5): n
= not present;
y=
present.
O3 Third probe calibration:
(-12.0
÷
12.0°C/ -21
÷
21°F) allows to adjust offsets of the third probe.
P4P Fourth probe presence (term. 5-6): n
= not present;
y=
present.
O4 Fourth probe calibration:
(-12.0
÷
12.0°C/ -21
÷
21°F) allows to adjust possible offsets of the
fourth probe.
OdS Outputs activation delay at start up:
(0÷255 min) 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.
(AUX and Light can work)
AC Anti-short cycle delay:
(0÷30 min) interval between the compressor stop and the following
restart.
AC1 Time delay between turning on compressor 2 :
(0÷255 sec) allows to set the delay between
turning on the first and the second compressor. It’s used with oA3 = cP2.
CCt Thermostat override:
(0min ÷23h 50min) allows to set the length of the continuous cycle. 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.
CH Type of action: CL
= cooling;
Ht
= heating.
DISPLAY
CF Temperature measurement unit:
°C = Celsius; °F = Fahrenheit . When the measurement unit
is changed the SET point and the values of the regulation parameters have to be modified
rES Resolution (for °C)
: (in = 1°C; de = 0,1°C) allows decimal point display.
dE
= 0,1°C;
in
= 1 °C
rEd Remote display :
select which probe is displayed by the remote display (
T620or CX620 or
V620
)
(
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
= Fourth probe,
SET
= set point; ;
dtr
= not set it.
dLy Display delay:
(0 ÷20.0m; risul. 10s) when the temperature increases, the display is updated of
1 °C/1°F after this time.
DEFROST
dFP Probe selection for defrost termination: nP
= no probe;
P1
=thermostat probe;
P2 =
not set it;
P3
=Third probe;
P4
= Fourth probe.
dtE Defrost termination temperature:
(-50,0÷110,0°C; -58÷230°F) (Enabled only when the dFP =
P3 or P4 and these probes are present) sets the temperature measured by the evaporator probe
which causes the end of defrost.
IdF Interval between defrosts:
(1÷120h) Determines the time interval between the beginning of two
defrost cycles.
MdF (Maximum) duration of defrost:
(0÷255 min) When
P2P = n
, no evaporator probe, it sets the
defrost duration, when
P2P = y
, defrost end based on temperature, it sets the maximum length
for defrost.
dFd Display during defrost: rt
= real temperature;
it
= temperature reading at the defrost start;
Set
= set point;
dEF
= “dEF” label;
dEG
= “dEG” label;
dAd Defrost display time out:
(0
÷
255 min) Sets the maximum time between the end of defrost and
the restarting of the real room temperature display.
OA3 = AUS: AUXILIARY THERMOSTAT CONFIGURATION (terms. 22-23)
ACH Kind of regulation for auxiliary relay
:
Ht
= heating;
CL
= cooling
SAA Set Point for auxiliary relay:
(-50,0÷110,0°C; -58÷230°F) it defines the room temperature
setpoint to switch auxiliary relay.
