dixell Wing XW40L, Wing XW40V Installing And Operating Insructions

1592009241 XW40L-V GB r1.0 04.05.2011 XW40L – XW40V 1/4

WING

XW40L – XW40V

1. GENERAL WARNING

1.1 PLEASE READ BEFORE USING THIS MANUAL

 This manual is part of the product and should be kept near the instrument for easy and quick

reference.

 The instrument shall not be used for purposes different from those described hereunder. It cannot

be used as a safety device.

 Check the application limits before proceeding.

1.2

SAFETY PRECAUTIONS

 Check the supply voltage is correct before connecting the instrument.
 Do not expose to water or moisture: use the controller only within the operating limits avoiding

sudden temperature changes with high atmospheric humidity to prevent formation of
condensation

 Warning: disconnect all electrical connections before any kind of maintenance.
 Fit the probe where it is not accessible by the End User. The instrument must not be opened.
 In case of failure or faulty operation send the instrument back to the distributor or to “Dixell S.r.l.”

(see address) with a detailed description of the fault.

 Consider the maximum current which can be applied to each relay (see Technical Data).
 Ensure that the wires for probes, loads and the power supply are separated and far enough from

each other, without crossing or intertwining.

 In case of applications in industrial environments, the use of mains filters (our mod. FT1) in parallel

with inductive loads could be useful.

2. GENERAL DESCRIPTION

Model XW40L, 38x185 mm format, and model XW40V, 100x64 format, are microprocessor based
controllers suitable for applications on medium or low temperature refrigerating units. They are provided
with 3 relay outputs to control compressor, defrost - which can be either electrical or hot gas - and the
lights. They are also provided with 2 NTC or PTC probe inputs, one for temperature control, one to
control the defrost end temperature of the evaporator. There are 1 digital inputs (free contact)
configurable by parameter.
An output allows the user to programme the parameter list with the “Hot Key”.

3. CONTROLLING LOADS

3.1 THE COMPRESSOR

The regulation is performed according to the temperature measured by the thermostat probe with a
positive differential from the set point: if the temperature increases and reaches set point plus differential
the compressor is started and then turned off when the temperature reaches the set point value again.
In case of fault in the thermostat probe the start and stop of the compressor are timed through
parameters “COn” and “COF”.

3.2 FAST FREEZING

When defrost is not in progress, it can be activated the keypad by holding the o key pressed for about
3 seconds. The compressor operates in continuous mode 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 about
3 seconds.

3.3 DEFROST

Two defrost modes are available through the “tdF” parameter: defrost with electrical heater or hot gas.
The defrost interval is control by means of parameter “EdF”: (EdF=in) the defrost is made every “IdF”
time, (EdF=Sd) the interval “IdF” is calculate through Smart Defrost algorithm (only when the
compressor is ON and the evaporator temperature is bigger than “SdF” parameter).
At the end of defrost the drip time is controlled through the “Fdt” parameter.

4. KEYBOARD

To display and modify target set point; in programming mode it selects a parameter or
confirm an operation.
By holding it pressed for 3s when max or min temperature is displayed it will be erased.

To see the max. stored temperature; in programming mode it browses the parameter
codes or increases the displayed value. By holding it pressed for 3s the fast freezing cycle
is started.
To see the min stored temperature; in programming mode it browses the parameter codes
or decreases the displayed value.

By holding it pressed for 3s the defrost is started.

Switch ON and OFF the light of the cold-room

Switch ON and OFF the instrument.

KEY COMBINATIONS

+

To lock and unlock the keyboard.

+

To enter the programming mode.

+

To exit the programming mode.

4.1 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 The light is on

4.2 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.

4.3 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.

4.4 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 .

4.5 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. The SET LED start 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.

4.6 TO START A MANUAL DEFROST

1. Push the DEF key for more than 2 seconds and a manual defrost will start.

4.7 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”

1592009241 XW40L-V GB r1.0 04.05.2011 XW40L – XW40V 2/4

4.8 TO ENTER IN PARAMETERS LIST “PR2”

To access parameters in “Pr2”:

1. Enter the “Pr1” level.

2. Select “Pr2” parameter and press the “SET” key.

3. The “PAS” flashing message is displayed, shortly followed by “0 - -” with a flashing zero.

4. Use o or n to input the security code in the flashing digit; confirm the figure by pressing “SET”.
The security code is “321“.

5. If the security code is correct the access to “Pr2” is enabled by pressing “SET” on the last digit.

Another possibility is the following: after switching ON the instrument the user can push Set and DOWN
keys within 30 seconds.

NOTE: each parameter in “Pr2” can be removed or put into “Pr1” (user level) by pressing “SET” + n.
When a parameter is present in “Pr1” LED is on.

4.9 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.

4.10 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.

4.11 ON/OFF FUNCTION

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;

N.B. During the OFF status the Light button is active.

4.12 TO SEE THE PROBE VALUES

1. Enter in “Pr2” level.

2. Select “Prd” parameter with o or n.

3. Press the “SET” key to display “Pb1” label alternate with Pb1 value.

4. Use o and n keys to display the other probe values.

5. Press “SET” to move to the following parameter.

5. 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 acceptable value for the

set point.

US Maximum set point limit: (SET110°C; SET÷230°F) Set the maximum acceptable value for set

point.

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.
(Light can work)

AC Anti-short cycle delay: (0÷30 min) interval between the compressor stop and the following

restart.

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.

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. When the measurement unit is

changed the SET point and the values of some 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

Lod Local display : select which probe is displayed by the instrument:

P1 = Thermostat probe
P2 = Evaporator probe
1r2 = difference between P1 and P2 (P1-P2)

DEFROST
tdF Defrost type:

rE = electrical heater (Compressor OFF)
in = hot gas (Compressor and defrost relays ON)

EdF Defrost mode:

in = interval mode. The defrost starts when the time “Idf” is expired.
Sd = Smartfrost mode. The time IdF (interval between defrosts) is increased only when the

compressor is running (even non consecutively) and only if the evaporator temperature is less than
the value in "SdF” (set point for SMARTFROST).

SdF Set point for SMARTFROST: (-3030 °C/ -2286 °F) evaporator temperature which allows the

IdF counting (interval between defrosts) in SMARTFROST mode.

dtE Defrost termination temperature: (-50,0÷110,0°C; -58÷230°F) (Enabled only when the

evaporator probe is 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.

dSd Start defrost delay: ( 0÷99min) This is useful when different defrost start times are necessary to

avoid overloading the plant.

Fdt Drain down time: (0÷60 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 fast freezing: (0min÷23h 50min) after a Fast Freezing cycle, the first defrost

will be delayed for this time.

ALARMS
ALC Temperature alarm configuration

rE = High and Low alarms related to Set Point
Ab = High and low alarms related to the absolute temperature.

ALU High temperature alarm setting:

ALC= rE, 0  50°C or 90°F
ALC= Ab, ALL  110°C or 230°F
when this temperature is reached and after the ALd delay time the HA alarm is enabled.

ALL Low temperature alarm setting:
ALC = rE , 0  50 °C or 90°F
ALC = Ab , - 50°C or -58°F  ALU
when this temperature is reached and after the ALd delay time, the LA alarm is enabled,.
AFH Temperature alarm differential: (0,1÷25,5°C; 1÷45°F) Intervention differential for temperature

alarm set point, always positive.

ALd Temperature alarm delay: (0÷255 min) time interval between the detection of an alarm condition

and the corresponding alarm signalling.

dAO Delay of temperature alarm at start-up: (0min÷23h 50min) time interval between the detection of

the temperature alarm condition after the instrument power on and the alarm signalling.

EdA Alarm delay at the end of defrost: (0255 min) Time interval between the detection of the

temperature alarm condition at the end of defrost and the alarm signalling.

dot Delay of temperature alarm after closing the door : (0255 min) Time delay to signal the

temperature alarm condition after closing the door.

doA Open door alarm delay:(0÷255 min) delay between the detection of the open door condition and

its alarm signalling: the flashing message “dA” is displayed.

nPS Pressure switch number: (0 15) Number of activation of the pressure switch, during the “did”

interval, before signalling the alarm event (I2F= PAL).

If the nPS activation in the did time is reached, switch off and on the instrument to restart
normal regulation.

PROBE INPUTS
Ot Thermostat probe calibration: (-12.012.0°C/ -2121°F) allows to adjust possible offset of the

thermostat probe.

OE Evaporator probe calibration: (-12.0 12.0°C/ -2121°F) allows to adjust possible offsets of the

evaporator probe.

P2P Evaporator probe presence: n= not present: the defrost stops only by time; y= present: the

defrost stops by temperature and time.

HES Temperature increase during the Energy Saving cycle : (-30,0°C  30,0°C / -22÷86°F) sets

the increasing value of the set point during the Energy Saving cycle.

DIGITAL INPUTS
odc Compressor status when open door:

no, Fan = normal; CPr, F_C = Compressor OFF.

I2P Configurable digital input polarity:

CL : the digital input is activated by closing the contact;
OP : the digital input is activated by opening the contact

I2F Digital input operating mode: configure the digital input function:
EAL = generic alarm;
bAL = serious alarm mode;
PAL = Pressure switch;
dFr = Start defrost;
AUS = Not used;
Es = Energy Saving;
onF = remote On/OFF.
dor = door switch
did Time interval/delay for digital input alarm:(0255 min.) Time interval to calculate the number of

the pressure switch activation when I2F=PAL. If I2F=EAL or bAL (external alarms), “did” parameter
defines the time delay between the detection and the successive signalling of the alarm.

OTHER
PbC Type of probe: it allows to set the kind of probe used by the instrument:

PbC = PBC probe, ntC = NTC probe.
rEL Release software: (read only) Software version of the microprocessor.
Ptb Parameter table: (read only) it shows the original code of the dIXEL parameter map.
Prd Probes display: (read only) display the temperature values of the evaporator probe Pb2.
Pr2 Access to the protected parameter list (read only).

6. DIGITAL INPUTS

The XW40L has 1 free contact digital input. It is programmable in seven different configurations by the
“I2F” parameter.