dixell XW60LS Installing And Operating Instructions
Digital controller for medium-low temperature
The regulation is perf ormed ac cordi ng to
by the
thermostat probe with a positive
differential from the set point: if the
started and then turned off when the
LED
MODE
FUNCTION
ON
Compressor enabled
Flashing
Anti-short cycle delay enabled
ON
Defrost enabled
Flashing
Drip time in progress
ON
Fans enabled
Flashing
Fans delay after defrost in progress.
ON
An alarm is occurring
ON
Continuous cycle is running
ON
Energy saving enabled
°C/°F
ON
Measurement unit
°C/°F
Flashing
Programming phase
n
n
o
o
refrigeration applications
XW60LS
1. GENERAL WARNING
Functioning: i f the difference of temper ature between the evaporator and the room probes is more
than the value of the Fct parameter, the fans are switched on. With Fct=0 the function is disabled.
3.3.2 Cyclical activation of the fans with compressor off.
When Fnc = c-n or c-Y ( fans in parallel to t he c om pr es s or) , by means of the Fon and FoF parameters
the fans can carry out on and off c ycl es ev en if the compressor is s wi tc hed of f. W hen the c om pr es s or
is stopped the fans go on worki ng for the F on tim e. Wi th Fon =0 t he fans rem ain al ways off, when the
compressor is off.
4. FRONT PANEL COMMANDS
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.
• Dixell Srl reserves the right to change the composition of its products, even without notice, ensuring
the same and unchanged functionality .
1.2
• Check the supply voltage is correct before connecting the ins trument.
• Do not expose to water or moisture: use the controller only within the operating limits avoiding sudden
• Warning: disconnect all electr ical connections before any kind of mai ntenance.
• 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
• Consider the maximum current which can be applied to each relay (see Technical D ata).
• Ensure that the wires for probes, loads and the power supply are separated and far enough from each
• In case of applications in industrial environments, the use of mains filters (our mod. FT1) in parallel
SAFETY PRECAUTIONS
temperature changes with high atmospheric humi di ty to prevent formation of condensation
address) with a detailed descript i on of the fault.
other, without crossing or i ntertwining.
with inductive loads could be useful.
2. GENERAL DESCRIPTION
Model XW60LS, format 38x185mm, is microprocessor based controller, sui table for applicati ons on
medium or low tem peratur e venti lated r efri gerati ng units . It has 3 relay outputs to control com pres sor,
fan and defrost, which c an be either electri cal or rever se cycle (hot gas ) It could be provided with a
Real Time Clock which allows programmi ng of up to 6 daily defrost cy cles, divi ded into holidays and
workdays. A “Day and Night” func tion wit h two different s et points is f itted for energy savi ng. It i s al so
provided with up to three NTC or PTC probe inputs, the f irst one for temperatur e control , the second
one, to be located onto the evaporator, to c ontrol the defros t term inat ion tem peratur e and to m anaged
the fan. Third probe can operates as digital input.
The HOT KEY output allows to connect the unit, by means of t he external module X J485-CX, to a
network line ModBUS-RTU compatible such as the dIXEL monitoring units of X-WEB family. It
allows to program the controller by means the HOT KEY programming keyboard.
The instrument is fully configurable through special parameters that can be easily programmed
through the keyboard.
3. CONTROLLING LOADS
3.1 COMPRESSOR
4.1 STANDARD FRONTAL PANEL
4.2 STEEL FINISHING
: To display target set point; in programming mode i t selects a parameter or confirm an
operation.
(DEF) To start a manual defrost
(UP): To see the max. stored temperatur e; in programming mode i t browses the parameter
codes or increases the displayed value.
(DOWN) To see the min s tored temperature; in pr ogramming mode i t browses the parameter
codes or decreases the displayed value.
To switch the instrument off, if onF = oFF.
NOT USED.
KEY COMBINATIONS:
+
+ To enter in programming mode.
+
To lock & unlock the keyboard.
To return to the room temperature display.
4.3 USE OF LEDS
Each LED function is described in the following table.
the temperature measured
temperature increases and reaches set
point plus di fferential the compress or is
temperature reaches the set point val ue
again.
In case of fault i n the thermostat probe the start and stop of the compress or are timed through
parameters “COn” and “COF”.
3.2 DEFROST
Two defrost modes ar e avail able t hrough the “tdF” param eter: defr ost thr ough elec tri cal heater ( tdF =
EL) and hot gas defrost (tdF = in).
The defrost interval depends on the pres enc e of t he RTC (opt i onal ) . I f the RT C i s pr es ent i s c ont rolled
by means of parameter “EdF”:
- with EdF=in the defrost is made every “IdF” time – standard way for controller without RTC.
- with EdF = “rtc”, the defros t is made i n real tim e depending on the hour s set in the par ameters
Ld1..Ld6 on workdays and in Sd1…Sd6 in holidays;
Other parameters are used to control defrost cycles: its maximum length (MdF) and two defrost
modes: timed or controlled by the evaporator’s probe (P2P).
At the end of defrost drippi ng time is started, its l ength is set in the F dt parameter. Wit h Fdt =0 the
dripping time is disabled.
3.3 CONTROL OF EVAPORATOR FANS
The fan control mode is selected by means of the “FnC” parameter:
FnC = C_n: fans will switch ON and OFF with the compressor and not run during defrost;
FnC = o_n fans will run even if the compressor is off, and not run during defrost;
After defrost, there is a timed fan delay allowing for drip time, set by means of the “Fnd” parameter.
FnC = C_Y fans will switch ON and OFF with the compressor and run during defrost;
FnC = o_Y fans will run continuously also during defrost
An additional parameter “FSt” provides the s etting of temper ature, detected by the evaporator probe,
above which the fans are always OFF. This is used to make sure circulation of air only if his
temperature is lower than set in “FSt”.
3.3.1 Forced activation of fans
This function managed by the Fct parameter is designed to avoid s hort cycles of fans, that coul d
happen when the control l er is switched on or after a defrost, when the r oom ai r war m s the ev apor ator .
5. MAX & MIN TEMPERATURE MEMORIZATION
5.1 HOW TO SEE THE MIN TEMPERATURE
1. Press and release the
key.
2. The “Lo” message will be displayed followed by the minimum temperature recorded.
3. By pressing the
key again or by waiting 5s the normal display will be restored.
5.2 HOW TO SEE THE MAX TEMPERATURE
1. Press and release the
key.
2. The “Hi” message will be displayed followed by the maximum temperature recorded.
3. By pressing the
key again or by waiting 5s the normal display will be restored.
5.3 HOW TO RESET THE MAX AND MIN TEMPERATURE RECORDED
1. Hold press the SET k ey for more than 3s , while the max . or min tem perature is dis played. (rSt
message will be displayed)
2. To confirm the operati on the “rSt” message starts blinking and the normal temperature will be
displayed.
1592027350 XW60LS RTC GB r1.0 18.03.2015 XW60LS 1/5
6. MAIN FUNCTIONS
1. Push and immediatel y r elease the SET key: the di s pl ay w i l l s how t he S et
2. Push and immediately release the SET key or wait for 5 seconds to
Push the DEF key for more than 2 seconds and a manual defrost will start.
n
o
With “onF = oFF”, pushing the ON/OFF key, the instr ument is swi tched off. The “OFF”
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
point value;
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
6.5 HOW TO CHANGE A PARAMETER VALUE
To change the parameter’s value operate as follows:
1. Enter the Programm ing mode by pres sing 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 Programm ing mode by pres sing the Set + n keys for 3s (the “°C” or “°F” LED starts
blinking).
2. Released the keys, then push agai n 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: i f none parameter is pres ent in Pr 1, after 3s the “noP ” message is displ ayed. Keep the k eys
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 VIC EVER SA.
Each parameter pres ent i n the HI DDE N M E NU can be r em ov ed or put into “THE FIRST LEVEL” (user
level) by pressing “SET +
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 wil l 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 wil l be
displayed.
6.9 THE CONTINUOUS CYCLE
When defrost is not in progress, i t can be activated by holding the “o” key pressed for about 3
seconds. The compressor operates to mai ntain the “ccS” set point for the tim e set through the “CCt”
parameter. The cycl e can be term inated before the end of the s et tim e using the sam e activ ation key
“
” for 3 seconds.
6.10 THE ON/OFF FUNCTION
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 t he nor mally clo sed cont acts of t he r elays 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) Int erventi on dif ferenti al for set point. Compr essor Cut IN is
Set Point + differenti al (Hy). Compressor Cut O UT is when the temperature reac hes 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 pr obe calibration: (-12.0÷12.0°C; -120÷120°F) al lows to adjust possi ble offset of
the thermostat probe.
P2P Evaporator pr obe presen ce: n= not pr esent: the defros t 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 possi ble offset of
the evaporator probe.
P3P Third probe presence (P3): n= not present:, the termi nals 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 activat ion delay at start up: (0÷255mi n) Thi s funct ion i s enabl ed at the ini tial star t 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 inter val between the compressor stop and the
following restart.
rtr Percentage of the seco nd and f ir st p r o be for regulation (0÷100; 100 = P1, 0 = P2 ): it allows
to set the regulation ac cording to the percentage of the first and s econd 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 cyc le: compr essor stay s on without interruption for the CCt tim e. 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 conti nuous
cycle.
COn Compressor ON time with faulty probe: (0÷255 min) tim e during which the compr essor 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 duri ng 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 S ET point and t he values of t he 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, S ET, dtr): it selects whic h 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 d isp lay ( optional): ( P 1; P 2, P 3, P 4, S E T, dtr ) : i t selects which probe is displ ay ed by X-
REP: P1 = Therm ostat probe; P2 = Evaporator probe; P3 = Third probe(only for model with t his
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 th e second and first probe for visualization when Lod = d tr (0÷100; 100 =
P1, 0 = P2 ): if Lod = dtr it allows to s et t he visualization according to t he perc ent age of the fir s t
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 ti me 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 temper ature measured by the evaporator
probe, which causes the end of defrost.
IdF Int erval bet ween def ro st cycles: ( 0÷ 120h) Deter m ines the time interval between the begi nni ng
of two defrost cycles.
MdF (Maximum) length for defrost: (0÷255min) When P2P = n, (not ev aporator probe: timed
defrost) it set s the defr os t dur at i on, when P2P = y ( defr os t end bas ed on tem per atur e) i t s ets the
maximum length for defrost.
dSd Start defrost delay: ( 0÷99min) This i s us eful when different defrost start times ar e nec es s ar y 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 def rost: (0÷255min). Sets the m aximum time between the end of
defrost and the restarting of the real room temperature display.
Fdt Drip time: (0÷120 min) time interv al between reac hing defros t termi nation temper ature and the
restoring of the control ’s normal operation. T his time allows the ev aporator 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 Defr ost delay after continuous cycle: (0÷23.5h) t ime 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 Temper ature dif ferential avo iding short cycles of fans (0÷ 59°C; Fc t=0 functi on disabl ed). If
the difference of tem perature 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
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