dixell CX620 Installations- und Betriebsanweisungen - Seite 2
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By holding it pressed for 3 sec the defrost is started.
Switch ON and OFF the cold room light.
Switch ON and OFF the instrument.
KEY COMBINATIONS
To lock and unlock the keyboard.
+
+
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
- Programming Phase (flashing with LED
FLASHING
- Anti-short cycle delay enabled
ON
The fan is running
FLASHING
Programming Phase (flashing with LED
ON
The defrost is enabled
FLASHING
Drip time in progress
ON
The Fast Freezing cycle is enabled
- ALARM signal
ON
- 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)
6
AUTOMATIC KEYBOARD LOCK (ONLY FOR T620T)
To avoid accidental modifications of the controller settings, the T620T keyboard will be locked
automatically if no key will be touched for 60 seconds. The T620T will show "LoC" flashing for few
seconds when it's locking. The light key is operating even if the keyboard is locked.
6.1 TO UNLOCK THE T620T
1.
Touch any key.
2.
The keys will be lighted.
3.
Keep a key pushed for few seconds till the "on" message is displayed.
7
CONTROLLER INTERFACE
7.1 HOW TO SEE THE MIN TEMPERATURE
1.
Press and release the DOWN key.
2.
The "Lo" message will be displayed followed by the minimum temperature recorded.
3.
By pressing the DOWN key or waiting for 5 sec the normal display will be restored.
7.2 HOW TO SEE THE MAX TEMPERATURE
1.
Press and release the UP key.
2.
The "Hi" message will be displayed followed by the maximum temperature recorded.
3.
By pressing the UP key or waiting for 5 sec the normal display will be restored.
7.3 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.
Note: after the installation remember to RESET the temperature stored.
7.4 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 UP or DOWN arrows within 10 sec.
3.
To memorise the new set point value push the SET key again or wait for 10 sec.
7.5 TO START A MANUAL DEFROST
1.
Push the DEF key for more than 2 sec and a manual defrost will start.
7.6 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 (
2.
The instrument will show the first parameter present in "Pr1"
1592026000 XW20K GB R2.0 08.06.2011.doc
)
)
and
start blinking).
7.7 THE HIDDEN MENU
In the hidden menu there are all the parameters of the instrument.
7.7.1 ENTERING THE HIDDEN MENU
1. Enter the Programming mode by pressing the SET+DOWN keys for 3 sec (the "°C" or "°F" LED will
start blinking).
2. Release the keys and then push again the SET+DOWN keys more than 7 sec. The "Pr2" label will
be displayed immediately, followed from the HY parameter.
NOW THE HIDDEN MENU IS DISPLAYED
3. Select the required parameter.
4. Press SET key to display its actual value
5. Use UP or DOWN keys to change its value.
6. Press SET to store the new value and move to the following parameter.
To exit: Press SET+UP or wait for 15 sec without pressing any key.
NOTE1: if no parameter is present in the "Pr1" level, after the first 3 sec the "noP" message will be
displayed. Keep SET+DOWN keys pushed till the "Pr2" message will be displayed.
NOTE2: the new set value will be stored even if the procedure is exited by waiting for the time-out to
expire.
7.7.2 HOW TO: MOVE A PARAMETER FROM THE HIDDEN MENU TO THE FIRST LEVEL AND
VICEVERSA.
Each parameter present in the HIDDEN MENU can be moved or put into "THE FIRST LEVEL" (user
level) by pressing SET+DOWN keys. In HIDDEN MENU, if a parameter is present also in the First
Level (Pr1), the decimal point will be lit.
7.7.3 HOW TO CHANGE THE PARAMETER VALUE
1. Enter the Programming mode.
2. Select the required parameter with UP or DOWN.
3. Press the "SET" key to display its value (
4. Use UP or DOWN 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 for 15 sec without pressing any key.
NOTE: the new programming is stored even when the procedure is exited by waiting the time-out.
7.8 HOW TO LOCK THE KEYBOARD (MANUALLY)
1.
Keep the UP and DOWN keys pressed together for more than 3 sec the UP and
DOWN 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 UP and DOWN keys pressed together for more than 3 sec.
7.9 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.
1.1 TO SEE THE PROBE VALUES
1.
Enter in "Pr1" level.
2.
Parameters "dP1", "dP3" and "dP4" display the value of probes 1, 3 and 4.
8
PARAMETER LIST
REGULATION
Hy Differential: (0.1 to 25.5°C; 1 to 45°F) 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: (-55.0°C to SET; -67°F to SET) Sets the minimum acceptable value
for the set point.
US Maximum set point limit: (SET to 150°C; SET to 302°F) Set the maximum acceptable value for
set point.
PROBE INPUTS
ot
Thermostat probe calibration (term. 1-2): (-12.0 to 12.0°C; -21 to 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 to 12.0°C; -21 to 21°F) allows to adjust possible offsets of the
third probe.
P4P Fourth probe presence (term. 5-6): n= not present; y= present.
o4
Fourth probe calibration: (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible offsets of the
fourth probe.
odS Outputs activation delay at start up: (0 to 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 to 30 min) interval between the compressor stop and the following
restart.
AC1 Time delay between turning on compressor 2: (0 to 255 sec) allows to set the delay between
turning on the first and the second compressor. It's used with oA3=CP2.
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and
LED starts blinking).
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