Page 1
Digital controller for m edium-low temperature
refrigeration applications
XW30LH – XW30LRH
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.
• Dixell Srl reserves the right to change the composition of its products, even without notice, ensuring
the same and unchanged functionality.
1.2
SAFETY PRECAUTIONS
• Check the supply voltage is c orrect before connecting the instrum ent.
• Do not expose to water or moisture: use the controller only within the operating limits avoiding sudden
temperature changes with high atmospher ic humidity to prevent formati on of condensation
• Warning: disconnect all electrical connections before any kind of maintenance.
• Fit the probe where it is not acc es sible by the End User. The instrument m ust 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 whic h c an be appl ied 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 usef ul.
2. GENERAL DESCRIPTION
Models XW30LH and XW30LRH, format 38x 185mm, are m icroproces sor based controll ers, suitable
for normal temperature appl ications on ventilated refrigerating uni ts. They have 3 relay outputs to
control compressor, fan, and light.
They could be prov ided with a Real Ti me Clock which al lows programmi ng of up to 6 daily defrost
cycles, divi ded into hol iday s and wor kdays . A “Day and Night” function with two diff erent set points is
fitted for energy savi ng. T hey ar e also provided with up to 3 NTC or P T C pr obe i nputs , t he fi r s t one for
temperature control, the second one, to be located onto the evaporator, to control the defrost
termination temperatur e and to managed the fan. One of the digital i nputs can operate as third
temperature probe. The fourth probe is used to signal the c ondens er tem per at ure alarm or to display a
temperature. NOTE: the fourth probe is available only for XW30LH models.
The HOT KEY output allows connec ting the unit, by means of the external module XJ485-CX, to a
network line ModBUS-RTU compatible such as the dIXEL monitoring units of X-WEB family. It
allows programming 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
The regulation is perfor med according to the
temperature measured by the thermostat
probe with a posi tive diff erential 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 i n the thermostat probe the start and stop of the compress or are timed through
parameters Con and CoF.
3.2 DEFROST
Defrost is performed through a simple stop of the compressor.
The defrost inter v al depends on the pr es 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:
- EdF=in: a defrost starts after elapsing the idF time (standard way for controller without RTC).
- EdF=rtC: defrosts are s cheduled by using a real time clock system, depending on the hours
set in the parameters Ld1..Ld6, during workdays, and in Sd1…Sd6 during holidays.
Other parameters are used t o control defrost cycles: its maximum l ength (MdF) and two defrost
modes: timed or controlled by the evaporator’s probe (P2P).
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;
- 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.
After defrost, there is a timed fan delay allowing for drip time, set by means of the Fnd parameter.
An additional parameter FSt provides the setting of temper ature, detected by the evaporator pr obe,
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 evaporator fans
This function, managed by the FCt parameter, is designed to avoid s hort cycles of evaporator fans,
which could happen when the contr ol l er i s s wi t c hed on or after a defrost (when the room air warms the
evaporator). If the temperature difference between t he evaporator and the room probes is higher than
the value set in the FCt parameter the fans are switched on. With FCt=0 this function is disabled.
3.3.2 Fans cyclic activation with compressor off.
When FnC=C-n or C-Y (fans working in parallel with the c ompr essor ), by means of the Fon and FoF
parameters the fans c an car ry out on and off cyc les even if the com press or is swi tched off . When the
compressor is s topped the fans go on worki ng for the Fon tim e. With Fon=0 the fans remain always
off, when the compressor is off.
4. FRONT PANEL COMMANDS
KEY COMBINATIONS:
+
To lock & unlock the keyboard.
+
To enter in programming mode.
+
To return to the room temperature display.
4.1 USE OF LEDS
Each LED function is described in the following table.
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
ON Light on
°C/°F
ON
Measurement unit
Flashing
Programming phase
5. AUTOMATIC KEYBOARD LOCK
To avoid accidental m odifications of the c ontroller settings , the XW30LH and XW30LRH keyboard
will be locked automatically if no key will be touched for 60 seconds. The controller will show
“LoC” flashing for few seconds when it’s lock ing. The light key is operating even if the keyboard i s
locked.
5.1 TO UNLOCK THE KEYBOARD
1. Touch any key.
2. The keys will be lighted.
3. Keep a key pushed for few seconds till the “on” message is displayed.
6. MAX & MIN TEMPERATURE MEMORIZATION
6.1 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 again or by waiting 5 sec the normal display will be restored.
6.2 HOW TO SEE THE MAX TEMPERATURE
1. Press and release the UP key.
2. The “Hi” message will be displayed followed by the maximum recorded temperature.
3. By pressing the UP key again or by waiting 5 sec the normal display will be restored.
6.3 HOW TO RESET THE MAX AND MIN TEMPERATURE RECORDED
1. Keep SET key pressed more t han 3 sec, while the max or min tem perature is displ ayed. (rSt
message will be displayed).
2. To confirm the operation t he “rSt” message starts bl inking and the normal t emperature will be
displayed.
7. MAIN FUNCTIONS
7.1 TO SET THE CURRENT TIME AND DAY (ONLY 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+ DOWN keys for 3 sec.
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 pus h SET to
confirm the value.
5. Repeat the same operations with Min (minutes) and dAy (day) parameters.
To exit: Push both SET+UP keys or wait for 15 sec without pushing any keys.
To display target set point; in programming mode it selects a parameter or confirm an
operation.
(DEF) To start a manual defrost.
(UP) To see the max stored temperature; in programming mode it browses the
parameter codes or increases the displayed value.
(DOWN) To see the min stored temperature; in programming mode it browses the
parameter codes or decreases the displayed value.
(OFF) To switch the instrument off, if onF=oFF.
(LiG) To switch the light, if oA3=Lig.
1592027560 XW30LH-XW30LRH GB r1.0 18.03.2015 XW30LH – XW30LRH 1/5
Page 2
7.2 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 sec to display
the probe value again.
7.3 HOW TO CHANGE THE SETPOINT
1. Push the SET key more than 2 sec to change the Set point value;
2. The value of the set point will be displayed and the “°C” or “°F” LED will start blinking.
3. To change the Set value, push both UP and DOWN arrows within 10 sec.
4. To store the new set point value, push the SET key again or wait for 10 sec.
7.4 HOW TO START A MANUAL DEFROST
Push the DEF key more than 2 sec and to start a manual defrost.
7.5 HOW TO CHANGE A PARAMETER VALUE
To change any parameter, operate as follows:
1. Enter the Progr amming mode by pressing both SET+DOWN keys for 3 sec (the “°C” or “°F” LED
will start blinking).
2. Select the required parameter and then press the SET key to display its value.
3. Use UP or DOWN keys to change its value.
4. Press SET to store the new value and move to the following parameter.
To exit: press both SET+UP keys or wait for 15 sec without pressing any key.
NOTE: the set value is stored even when the procedure is exited by waiting the time-out to expire.
7.6 THE HIDDEN MENU
The hidden menu shows all the parameters of the instrument.
7.6.1 HOW TO ENTER THE HIDDEN MENU (Pr2)
1. Enter the Programmi ng mode by pressing the SET+DOWN keys for 3 sec (the “°C” or “°F”
LED will start blinking).
2. Released the keys and then push agai n the SET+DOWN keys more than 7 sec. The “Pr2”
label will be displayed immediately followed by the HY parameter.
NOW THE HIDDEN MENU IS DISPLAYED.
3. Select the required parameter.
4. Press the SET key to display its 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 keys or wait for 15 sec without pressing any key.
NOTE1: if no parameters are pr esent in Pr1, after 3 sec the “noP” message will be displayed. K eep
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.
7.6.2 MOVE A PARAMETER FROM Pr2 TO Pr1 AND VICEVERSA.
Each parameter present i n the P r 2 ( HI DDEN M E NU) can be moved to the Pr1 (user level) by pressing
both SET+DOWN keys.
When in Pr2 (hidden menu) if a parameter is visible in Pr1, then the decimal point will be on.
7.7 MANUALLY LOCK AND UNLOCK THE KEYBOARD
+
HOW TO LOCK THE KEYBOARD
1. Keep both UP+DOWN keys pressed more than 3 sec.
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.
HOW TO UNLOCK THE KEYBOARD
Keep bothj UP+DOWN keys pressed more than 3 sec.
7.8 THE CONTINUOUS CYCLE
When defrost is not active, a continuous cycl e can be activated by keeping the UP key pressed for
about 3 sec. The compressor operates to mai ntain t he CCS set point for the time set through the CCt
parameter. The cycl e can be t er m i nated bef ore t he end of the s et ti m e by k eepi ng t he UP key pressed
3 sec.
7.9 THE ON/OFF FUNCTION
With onF=oFF, after pushing the ON/OFF key the instrument is switched off. The “OFF”
message will be displayed. In this configuration the regulation is disabled.
To switch the instrument on, push again the ON/OFF key.
WARNING: Loads connected t o th e nor mally closed contact s of t he rel ays are always supplied
and under voltage, even if the instrument is in stand by mode.
8. PARAMETERS
rtC
Real time clock menu (only for controller with RTC): to set the time, date and defrost
start time.
REGULATION
HY
Differential: ( 0.1 t o 25.5°C; 1 to 45°F ) i nter v enti on dif fer enti al for set point. Compressor
Cut IN is Set Point + dif ferential (HY). Compres sor Cut OUT is when the temperature
reaches the set point.
LS
Minimum set point: (-55°C to SET ; -67°F to SE T) sets t he mini mum val ue for the set
point.
US
Maximum set point: (S ET to 150°C; SE T to 302°F) set the maxi mum value for set
point.
Ot
Thermostat probe calibration: (-12.0 to 12.0°C; -21 to 21°F) all ows to adj ust possi ble
offset of the thermostat probe.
P2P
Evaporator probe presence: (n; Y) n = not present, the defrost stops by time;
Y = present, the defrost stops by temperature.
oE
Evaporator probe calibration: (-12.0 to 12.0°C; -21 to 21°F) all ows to adj ust pos si ble
offset of the evaporator probe.
P3P
Third probe presence (P3): (n; Y) n = not present, the terminals 18-20 operate as
digital input; Y = present, the terminals 18-20 operate as third probe.
o3
Third probe calibration (P3): (-12.0 t o 12.0°C; -21 to 21°F) allow s to adjust poss ible
offset of the third probe.
P4P
Fourth probe presence: (n; Y) n = Not present; Y = present.
NOTE: only for XW30LH model.
o4
Fourth probe calibration: (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible offset
of the fourth probe.
NOTE: only for XW30LH model.
odS
Outputs activation del ay at start up: (0 to 255min) this function is enabled at the initial
start up of the instr ument and inhibi ts any output acti vation for the period of ti me set i n
the parameter.
AC
Anti-short cycle delay: (0 t o 50min) minim um interval between the com pressor stop
and the following restart.
AC1
2nd compressor delay at st art up (0÷255s) Us ed only with oA3 or oA4 = cP2 Ti me
interval between the switching on of the first compressor and the second one.
NOTE: only for XW30LH model.
rtr
Percentage of the second and first probe for regulation: (0 to 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 to 24h00min, res. 10mi n) all ows
to set the length of the cont inuous cycle. Compressor stays on w ithout interruption
during CCt time. This is useful, for instance, when the room is filled with new products.
CCS
Set point for continuous cycle: (-55 to 150°C; -67 to 302°F) i t s ets t he set poi nt us ed
during the continuous cycle.
Con
Compressor ON time with faulty probe: (0 to 255min) time during which the
compressor is ac tive in case of faulty thermostat probe. With Con=0 compressor is
always OFF.
CoF
Compressor OFF time with faulty probe: (0 to 255min) time during which the
compressor is O FF in case of faulty thermostat probe. With CoF=0 compressor is
always active.
DISPLAY
CF
Temperature measurement unit: (°C; °F) °C = Celsius; °F = Fahrenheit.
WARNING: When the m easurement unit i s changed the SE T point and the v alues 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 s elec ts whi ch probe i s dis played 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 =
percentage of visualization.
dLY
Display delay: (0 t o 20m i n00s ; r es . 10s ) when the t em per atur e i nc r eas es, the di s pl ay
is updated of 1°C or 1°F after this time.
dtr
Percentage of the second an d first pro be for visualizat ion when Lod=dtr: ( 0 to
99; 100=P1, 0=P2) if Lod=dtr it allows to set the visualization according to the
percentage of the first and sec ond probe, as f or the fol lowi ng form ula ( dtr(P1-P2)/100
+ P2).
DEFROST
EdF
Defrost mode (only for controller with RTC):
- rtC: Real T ime Clock mode. Defrost time follows Ld1 to Ld6 parameters on
workdays and Sd1 to Sd6 on holidays.
- in: interval mode. The defrost starts when the time idf is expired.
dFP
Probe selection for defrost termination: (nP; P1; P2; P3; P4) nP = no probe;
P1 =thermostat probe; P2 = evaporator probe; P3 =configurable pr obe; P4 = Probe on
Hot Key plug.
dtE
Defrost terminati on temperature: (-55 to 50°C; -67 to 122°F ) (enabled only when
EdF=Pb) sets the temperatur e measured by the evaporator probe, which causes the
end of defrost.
idF
Interval between defr ost cycles: (0 to 120hours) determi nes the interval of time
between two defrost cycles.
MdF
(Maximum) length for defrost: (0 to 255min) when P2P=n, (not evaporator pr obe:
timed defrost) it sets the defrost duration. When P2P=Y (defrost end based on
temperature) it sets the maximum length for defrost.
dFd
Temperature displayed during defrost: (rt; it; SEt; dEF) rt = real temperature;
it = temperature at defrost start; SEt = set point; dEF = “dEF” label.
dAd
MAX display delay after d efrost : (0 to 255min) s ets the m axi mum t im e between the
end of defrost and the restarting of the real room temperature display.
FANS
FnC
Fans operating mode: (C-n; o-n; C-Y; o-Y) C-n = runs with the compressor, OFF during
defrost; o-n = c ontinuous mode, OFF duri ng defrost; C-Y = runs with the compres sor,
ON during defrost; o-Y = continuous mode, ON during defrost.
Fnd
Fans delay after defro st: (0 to 255min) i nterv al between end of defr ost and ev aporator
fans start.
FCt
Temperature differ ential to avoid fan short cycles: (0 t o 59°C; 0 to 90°F) (N.B.:
FCt=0 means funct ion disabl ed) if the differ ence of tem peratur e between the evapor ator
and the room probes is higher than FCt value, the fans will be switched on.
FSt
Fans stop temperature: (-55 to 50° C; -67 t o 122°F ) s et ti ng of tem per atur e, det ec ted by
evaporator probe, above which fans are always OFF.
Fon
Fan ON time: (0 to 15min) with Fnc=C_n or C_Y, (fan activated in parallel with
compressor) it sets t he evaporator fan ON cyc li ng t i m e when the c om pr es s or i s off . W i th
Fon=0 and FoF≠0 the fan are always off, with Fon=0 and FoF=0 the fan are always off.
FoF
Fan OFF time: (0 to 15min)
With FnC=C_n or C_Y, (fan ac tiv ated in par all el wi th com press or) i t s ets the ev aporator
fan off cycling time when the compressor is off.
With Fon=0 and FoF≠0 the fan are always off, with Fon=0 and FoF=0 the fan are
always off.
FAP
Probe selection for fan management: (nP; P1; P2; P3; P4) nP = no probe;
P1 =thermostat probe; P2 = evaporator probe; P3 =configurable probe; P4 = 4th Probe.
1592027560 XW30LH-XW30LRH GB r1.0 18.03.2015 XW30LH – XW30LRH 2/5
Page 3
AUXILIARY THERMOSTAT CONFIGURATION
ACH
Kind of regulation for auxiliary relay: (Ht; CL) Ht = heating; CL = cooling.
SAA
Set Point for au xiliary relay: (-55.0 to 150.0°C; -67 to 302°F) i t defines the room
temperature set point to switch auxiliary relay.
SHY
Differential for auxiliary output: (0.1 to 25.5°C; 1 to 45°F) i ntervention di fferential for
auxiliary output set point.
• ACH=CL, AUX Cut in is [SAA+SHY]; AUX Cut out is SAA.
• ACH=Ht, AUX Cut in is [SAA–SHY]; AUX Cut out is SAA.
ArP
Probe selection for au xili ar y: (nP; P1; P2; P3; P4) nP = no pr obe, t he aux i l i ar y r el ay is
switched only by the di gital input; P1 = Probe 1 (T hermostat probe); P2 = Probe 2
(evaporator probe); P3 = Probe 3 (display probe); P4 = Probe 4.
Sdd
Auxiliary relay off during defrost: (n; Y) n = the auxiliary relay operates during defrost.
Y = the auxiliary relay is switched off during defrost.
ALARMS
ALP
Probe selection for al ar m: ( nP ; P 1; P 2; P 3; P 4) nP = no probe, the temperature alarms
are disabled; P1 = Probe 1 (Thermostat probe); P2 = Probe 2 (evaporator probe);
P3 = Probe 3 (display probe); P4 = Fourth probe.
ALC
Temperature alarms configuration: (Ab; rE) Ab = absolute temperature, alarm
temperature is given by t he ALL or ALU values. rE = temperature alarms are referred to
the set point. Temperature alarm is enabled when the temperature exceeds the
[SET+ALU] or [SET-ALL] values.
ALU
MAXIMUM temperature alarm:
• If ALC=Ab: [ALL to 150.0°C or ALL to 302°F]
• If ALC=rE: [0.0 to 50.0°C or 0 to 90°F]
when this temperature is reached the alarm is enabled, after the ALd delay time.
ALL
Minimum temperature alarm:
• If ALC=Ab: [-55°C to ALU; -67 to ALU]
• If ALC=rE: [0.0 to 50.0°C or 0 to 90°F]
when this temperature is reached the alarm is enabled, after the ALd delay time.
AFH
Differential for temperature alarm recover y: (0.1 to 25.5°C; 1 to 45°F) interventi on
differential for recovery of temperature alarm.
ALd
Temperature alarm del ay: (0 to 255 min) tim e interval between the detection of an
alarm condition and alarm signalling.
dAo
Exclusion of temperature alarm at start-up: (0.0 to 24h00min, res. 10min) time
interval between the detecti on of the temper ature al arm condi tion after ins trum ent power
on and alarm signalling.
CONDENSER TEMPERATURE ALARM
AP2
Probe selection for temperature alarm of condenser: (nP; P1; P2; P3; P4)
nP = no probe; P1 = ther mos tat probe; P2 = evaporator probe; P3 = confi gur abl e pr obe;
P4 = Probe on Hot Key plug.
AL2
Low temperature alarm of condenser: (-55 to 150°C; -67 to 302°F) when this
temperature is reached the LA2 alarm is signalled, possibly after the Ad2 delay.
Au2
High temperature alarm of condenser: (-55 to 150°C; -67 to 302°F) when this
temperature is reached the HA2 alarm is signalled, possibly after the Ad2 delay.
AH2
Differential for temperature condenser alarm recovery: 0.1 to 25.5°C; 1 to 45°F.
Ad2
Condenser temperature alarm delay: (0 to 255 min) time interval between the
detection of the condenser alarm condition and alarm signalling.
dA2
Condenser temperature alarm exclusion at start up: 0.0 to 24h00min, res. 10min.
bLL
Compressor off wit h low temperature alar m of condenser: (n; Y) n = compressor
keeps on working; Y = compress or is switched off ti ll the alar m is pres ent, in any cas e
regulation restarts after AC time at minimum.
AC2
Compressor off with high temperature alar m of condenser: (n; Y) n = compress or
keeps on working; Y = compress or is switched off ti ll the alar m is pres ent, in any cas e
regulation restarts after AC time at minimum.
OUTPUT RELAY
tbA
Alarm relay silencing (wi th oAx =ALr): (n; Y) n = silencing disabled: alarm r el ay s tay s
on till alarm c ondition lasts. Y = si lencing enabled: alarm rel ay is switched OFF by
pressing a key during an alarm.
oA1
Third relay configuration (XW30LH: ter minals 1-3, XW30LRH: terminals 5-6): (dEF;
FAn; ALr; LiG; A US; onF ; db; dEF2; HE S) dEF = defrost; FAn = do not select it; ALr =
alarm; LiG = light; AUS = Auxiliary rel ay; onF = always on with instrum ent on; db =
neutral zone; dEF2 = do not select it; HES = night blind.
AoP
Alarm relay polarity: (CL; oP) it set if the al arm rel ay is open or c losed when an al arm
occurs. CL = terminals closed during an alarm; oP = terminals open during an alarm.
DIGITAL INPUTS
i1P
First digital input polarity: (oP; CL) oP = the digital input is act ivated by opening t he
contact; CL = the digital input is activated by closing the contact.
i1F
First digital input configuration: (EAL; bA L; PAL; dor; dEF; ES; A US; Htr; FAn; HdF;
onF; Sbt) EAL = external alarm: “EA” message is displ ayed; bAL = serious alarm “CA”
message is displ ayed; PAL = pressure switc h alarm , “CA” message i s display ed; dor =
door switch function; dEF = ac tivation of a defrost cycle; ES = energy sav ing; AUS =
auxiliary relay activation with oA2=AUS; Htr = type of inverting action (cooling or
heating); FAn = fan; HdF = Hol iday defr ost (enabl e only wi th RTC); onF = to swi tch t he
controller off; Sbt = to activate Sabbath mode.
did
Digital input 1 alar m delay: (0 to 255 min) delay between the detec tion of t he external
alarm condition and its signalling.
When i1F= PAL, it is the interval of ti me to calculate the number of pres sure switch
activation.
i2P
Second digital input polarity: (oP; CL) oP = the digital input is activated by opening the
contact; CL = the digital input is activated by closing the contact.
i2F
Second digital input configuration: (EAL; bAL; PAL; dor; dEF; ES; AUS; Htr; FAn;
HdF; onF; Sbt) EAL = external alarm: “EA” mes sage is di splayed; bAL = serious alarm
“CA” message is displayed; PAL = pressure switch al arm, “CA” message is di splayed;
dor = door switch func tion; dEF = activation of a defrost cycle; ES = energy saving; AUS
= auxiliary relay activation with oA2=AUS; Htr = type of i nverting action (cooling or
heating); FAn = fan; HdF = Hol iday defr ost (enabl e only wi th RTC); onF = to swi tch t he
controller off; Sbt = to activate Sabbath mode.
doA
Door open alarm delay: 0 to 255 min.
d2d
Digital input 2 alarm delay: (0 to 255 min) delay between the detecti on of the exter nal
alarm condition and its signalling.
When i2F= PAL, it is the interval of ti me to calculate the number of pres sure switch
activation.
nPS
Number of pressure sw itch activatio n: (0 to 15) Number of ac tivati on, during the did
or d2d interval, before signalling an alarm event (i1F, i2F=PAL).
If the nPS activation dur ing did or d2d time is reached, switc h off and on the instr ument
to restart normal regulation.
odC
Compressor status when open door: (no; FAn; CPr;F_C;) no = normal;
FAn = normal; CPr = compressor OFF, F_C = compressor OFF.
rrd
Outputs restart after door open alarm: (n; Y) n = outputs follow the odC parameter.
Y = outputs restart with a door open alarm.
HES
Delta temperature du ring an Energy Savi ng cycle: (-30.0 to 30.0°C; -54 to 54°F) i t
sets the increasing value of the set point [SET+HES] during the Energy Saving cycle.
CURRENT TIME AND WEEKLY HOLIDAYS (ONLY FOR MODELS WITH RTC)
Hur
Current hour: 0 to 23h.
Min
Current minute: 0 to 59min.
dAY
Current day: Sun to SAt.
Hd1
First weekly holiday: ( Sun to nu) s et the fi rst day of the week whic h foll ows the holiday
times.
Hd2
Second weekly holiday: (S un to nu) set the sec ond day of the week whi ch foll ows the
holiday times.
N.B.: Hd1, Hd2 can be set also as “nu” value (Not Used).
ENERGY SAVING TIMES (ONLY FOR MODELS WITH RTC)
ILE
Energy Saving cycle start during workdays: (0 to 23h50min) during the Energy
Saving cycle the s et point is increased by the value in HES so that the operati on set
point is SET+HES.
dLE
Energy Saving cycle lengt h dur i ng wor kd ays: (0 to 24h00min) sets the duration of the
Energy Saving cycle on workdays.
ISE
Energy Saving cycle start on holidays: 0 to 23h50min.
dSE
Energy Saving cycle length on holidays: 0 to 24h00min.
TO SET DEFROST TIMES (ONLY FOR MODELS WITH RTC)
Ld1...Ld6
Workday defrost st art: (0 to 23h50min) these parameters set the beginni ng of the 6
programmable defrost cycles during workdays. Ex: when Ld2=12.4 the second
defrost starts at 12.40 during workdays.
Sd1...Sd6
Holiday defrost star t: (0 to 23h50min) these parameter s set the beginni ng of the 6
programmable defrost c ycles on holidays. Ex: when Sd2=3.4 the second defros t
starts at 3.40 on holidays.
N.B.: to disable a defrost cycle set it to “nu” (not used).
OTHER
LoC
Lock keyboard timer: nu(9) = keyboard never blocked, or 10 to 255 sec
Adr
Serial address: (1 to 247) identifies the instrument address when connected to a
ModBUS compatible monitoring system.
PbC
Type of probe: (PtC; ntC) it allows to set the kind of probe used by the instrument:
- PtC = PTC probe;
- ntC = NTC probe.
onF
On/Off key enabling: (nU; oFF; ES) nU = disabled; oFF = enabled; ES = not set it.
dP1
Thermostat probe display.
dP2
Evaporator probe display.
dP3
Third probe display.
dP4
Fourth probe display (only for XW30LH model).
rSE
Real set point: it shows the set point used duri ng the energy savi ng cycl e or during the
continuous cycle.
rEL
Software release for internal use.
Ptb
Parameter table code: readable only.
9. DIGITAL INPUTS
The first digital input (XW30LH: terminals 13-14; XW30LRH: terminals 14-15) is enabled if P3P=n.
With P3P=n and i1F=i2F the second digital input will be disabled.
The free voltage digital inputs are programmable by the i1F and i2F parameters.
9.1 GENERIC ALARM (i1F or i2F = EAL)
As soon as the digital input i s act ivat ed the unit wi ll wait for did ti m e delay before signalling the “EAL”
alarm message. The outputs status doesn’ t change. T he alarm s tops jus t after the digi tal i nput is deactivated.
9.2 SERIOUS ALARM MODE (i1F or i2F = bAL)
When the digital input is activated, the unit will wait for did delay before s ignalling the “CA” alarm
message. The relay outputs are sw itched OFF . The alarm will stop as s oon as the digi tal input is deactivated.
9.3 PRESSURE SWITCH (i1F or i2F = PAL)
If during the interval ti me set by did parameter, the pressure swi tch has reached the number of
activation of the nPS parameter; the “CA” pressure al ar m m es s age wi l l be displayed. The compress or
and the regulation are stopped. When the di gital input is ON the compressor is always OFF. If the
nPS activation in the did time is reached, switch off and on the instrument to restart normal
regulation.
9.4 DOOR SWITCH INPUT (i1F or i2F = dor)
It signals the door status and the corresponding r elay output status through the odC parameter: no:
normal (any change); FAn: Fan OFF; CPr: Compressor OFF; F_C: Compressor and fan OFF.
Since the door is opened, after the delay t ime set through par ameter did, the door al arm i s enabled,
the display shows the m essage “dA” and the regulation restar ts if rtr=YES. The alar m stops as
soon as the external digit al input i s disabl ed again. With the door open, the hi gh and low tem peratur e
alarms are disabled.
1592027560 XW30LH-XW30LRH GB r1.0 18.03.2015 XW30LH – XW30LRH 3/5
Page 4
9.5 START DEFROST (i1F or i2F = dEF)
It starts a defrost if there are the right conditions. After the defrost is finished, the normal regulation will
restart only i f t he di gi tal input is disabled otherwise t he i ns tr um ent w i l l wait until the MdF safety ti m e is
expired.
9.6 SWITCH THE AUXILIARY RELAY (i1F or i2F = AUS)
With oAx=AUS the digital input will change the status of the auxiliary relay.
9.7 INVERSION OF THE KIND OF ACTION: HEATING-COOLING (i1F or i2F=Htr)
This function allows to invert the regulation of the controller: from cooling to heating and viceversa.
9.8 ENERGY SAVING (i1F or i2F = ES)
The Energy Saving funct ion allows to change the set point value as the result of the SET+HES
(parameter) sum. This function is enabled until the digital input is activated.
9.9 ON OFF FUNCTION (i1F or i2F = onF)
To switch the controller on and off.
9.10 DIGITAL INPUTS POLARITY
The digital input polarity depends on the i1P and i2P parameters.
- i1P or i2P =CL: the input is activated by closing the contact.
- i1P or i2P=OP: the input is activated by opening the contact.
10. TTL SERIAL LINE – FOR MONITORING SYSTEMS
The TTL serial line, available through the HOT KEY connector, allows by means of the external
TTL/RS485 converter, XJ485-CX, to c onnect the instrument to a moni toring system ModBUS-RTU
compatible such as the X-WEB500/3000/300.
11. X-REP OUTPUT – OPTIONAL
As optional, an X-REP can be connected to the instrument, trough the dedicated connector.
To connect the X-REP to the
instrument the following
connectors must be used
CAB/REP1(1m), CAB/REP2
(2m), CAB/REP5 (5m),
12. INSTALLATION AND MOUNTING
The XW30LH shall be mounted on vertic al panel, in a 150x31 mm hole, and fixed using the special
brackets supplied wi th the controllers. The temper ature range allowed for correct operation is 0 to
60°C. Avoid places s ubj ec t to s tr ong v i br at i ons , c or r osive gases, excessive dir t or humi di ty . The same
recommendations apply to probes. Let the air circulate by the cooling holes.
12.1 CUT OUT
13. ELECTRICAL CONNECTIONS
The instruments are prov ided with sc rew termi nal block to c onnect cables wi th a cross section up to
2.5 mm
2
for the digital and analogue input s. Relays and power supply have a Faston connection
(6.3mm). Heat-resistant c ables have to be used. Before connecting cables m ake sure the power
supply complies with the instrument’s requirements.
Separate the probe cables from t he power supply cables, from the outputs and the power connections.
Do not exceed the maximum current allowed on eac h relay, in cas e of heavier loads us e a suitable
external relay.
N.B. Maximum current allowed for all the loads is 20A.
13.1 PROBE CONNECTION
The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid
infiltration. It is recommended to place the thermos tat probe away from air streams to correct ly
measure the average room temperature. Pl ace the defrost termi nation probe among the evaporator
fins in the coldest pl ace, wher e mos t ic e is f ormed, far fr om heaters or fr om the war mes t plac e during
defrost, to prevent premature defrost termination.
14. HOW TO USE THE HOT KEY
14.1 PROGRAM A HOT KEY FROM AN INSTRUMENT (UPLOAD)
1. Program one controller with the front keypad.
2. When the controller is ON, insert the “HOT-KEY” and push UP button; the “uPL” message
appears followed a by a flashing “End” label.
3. Push SET button and the “End” will stop flashing.
4. Turn OFF the instrument, remove the “HOT-KEY” and then turn it ON again.
NOTE: the “Err” message appears in c ase of a f ail ed program mi ng operation. In this case push again
button if you want to restart the upload again or remove the “HOT-KEY” to abort the operation.
14.2 PROGRAM AN INSTRUMENT BY USING A HOT KEY (DOWNLOAD)
1. Turn OFF the instrument.
2. Insert a pre-programmed “HOT-KEY” into the 5-PIN receptacle and then turn the Controller
ON.
3. The parameter list of the “HOT-KEY” will be automati cally downloaded into the Controller
memory. The “doL” message will blink followed a by a flashing “End” label.
4. After 10 seconds the instrument will restart working with the new parameters.
5. Remove the “HOT-KEY”.
NOTE: the m essage “Err” is di splayed for fai led program ming. In this case turn the unit off and then
on if you want to restart the download again or remove the “HOT-KEY” to abort the operation.
15. ALARM SIGNALS
Message
Cause
Outputs
P1
Room probe failure
Compressor output acc. to par. Con and CoF
P2
Evaporator probe failure
Defrost end is timed
P3
Third probe failure
Outputs unchanged
P4
Fourth probe failure
Outputs unchanged
HA
Maximum temperature alarm
Outputs unchanged.
LA
Minimum temperature alarm
Outputs unchanged.
HA2
Condenser high temperature
It depends on the AC2 parameter
LA2
Condenser low temperature
It depends on the bLL parameter
dA
Door open
Compressor and fans restarts
EA
External alarm
Output unchanged.
CA
Serious external alarm (i1F=bAL)
All outputs OFF.
CA
Pressure switch alarm (i1F=PAL)
All outputs OFF
rtC Real time clock alarm
Alarm output ON; Other outputs unchanged;
Defrosts according to par. idF Set real time clock
has to be set.
rtF Real time clock board failure
Alarm output ON; Other outputs unchanged;
Defrosts according to par. idF. Contact the service.
15.1 SILENCING BUZZER / ALARM RELAY OUTPUT
- tbA=Y: the buzzer and the relay are is silenced by pressing any key.
- tbA=n: only the buzzer is silenced while the alarm relay is on until the alarm condition
recovers.
15.2 ALARM RECOVERY
Probe alarms P1, P2, P3 and P4 start s ome seconds after the fault in the related pr obe; they
automatically s top some seconds after the probe restarts normal oper ati on. C heck c onnec t i ons befor e
replacing the probe.
Temperature alarms HA, LA, HA2 and LA2 automatic ally stop as soon as the temperature retur ns to
normal values.
Alarms EA and CA (with i1F=bAL) recover as soon as the digital input is disabled.
Alarm CA (with i1F=PAL) recovers only by switching off and on the instrument.
15.3 OTHER MESSAGES
on
Keyboard enabled after automatic lock.
LOC
Keyboard automatically locked
Pon
Keyboard unlocked.
PoF
Keyboard locked
noP
In programming mode: none parameter is present in Pr1
On the display or in dP2, dP3, dP4: the selected probe is nor enabled
16. TECHNICAL DATA
Housing: self extinguishing ABS
Case: facia 38x185 mm; depth [XW30LH: 76mm], [XW30LRH: 40mm]
Mounting: panel mounting in a 150x31 mm panel cut-out with the 2 metal brackets supplied
Protection: IP20
Frontal protection: IP65
Connections: screw terminal block
≤ 2.5 mm
2
heat-resistant wiring and 6.3mm Faston
Power supply: 230Vac or. 110Vac or 24Vac
± 10%
Power absorption: 5VA max
Display: 3 digits, white LED, 14.2 mm high
Inputs: Up to 4 NTC or PTC probes
Digital inputs: 2 free voltage
Relay outputs for XW30LH models: Total current on loads MAX. 20A
Compressor: relay SPST 20(8) A, 250Vac
Light: relay SPST 8 or 16(3) A, 250Vac
Fans: relay SPST 8(3) A, 250Vac
Relay outputs for XW30LRH models: Total current on loads MAX. 16A
Compressor: relay SPST 20(8)A, 250Vac
Fans: relay SPST 5A, 250Vac
Light: relay SPST 8(3) A, 250Vac
Other output: buzzer
Serial output: TTL standard
Communication protocol: Modbus - RTU
Data storing: on the non-volatile memory (EEPROM)
Internal clock back-up: 24 hours (only for model with RTC)
Kind of action: 1B
Pollution degree: 2
Software class: A
Rated impulsive voltage: 2500V
Over voltage Category: II
Operating temperature: 0 to 60 °C (32 to 140°F)
Storage temperature: -30 to 85°C (-22 to 185°F).
Relative humidity: 20 to 85% (not condensing)
Measuring and regulation range:
NTC probe: -40 to 110°C (-40 to 230°F)
PTC probe: -50 to 150°C (-58 to 302°F)
Resolution: 0.1°C or 1°C or 1°F (selectable)
Accuracy (ambient temp. 25°C): ±0.7°C ±1 digit
1592027560 XW30LH-XW30LRH GB r1.0 18.03.2015 XW30LH – XW30LRH 4/5
Page 5
17. CONNECTIONS
17.1 XW30LH
Supply: 120Vac or 24Vac: connect to terminals 11-12
The light relay can be also 16(5)A according to the model
17.2 XW30LRH
Model at 120Vac: connect to terminals 8-9
18. DEFAULT SETTING VALUES
Label
Name
Range
°C/°F
Level
Set
Set point
LS to US
-5.0
- - -
rtC*
Real time clock menu
-
-
Pr1
Hy
Differential
[0.1 to 25.5°C]
[1 to 45°F]
2.0 Pr1
LS
Minimum set point
[-55°C to SET]
[-67°F to SET]
-50.0 Pr2
US
Maximum set point
[SET to 150°C]
[SET to 302°F]
110 Pr2
ot
Thermostat probe calibration
[-12 to 12°C]
[-21 to 21°F]
0.0 Pr1
P2P
Evaporator probe presence
n=not present; Y=present
Y
Pr1
oE
Evaporator probe calibration
[-12 to 12°C]
[-21 to 21°F]
0.0 Pr2
P3P
Third probe presence
n=not present; Y=present
n
Pr2
o3
Third probe calibration
[-12 to 12°C]
[-21 to 21°F]
0 Pr2
P4P
Fourth probe presence (only for
XW30LH)
n=not present; Y=present n Pr2
o4
Fourth probe calibration (only for
XW30LH)
[-12 to 12°C]
[-21 to 21°F]
0 Pr2
odS
Outputs delay at start up
0 to 255 min
0
Pr2
AC
Anti-short cycle delay
0 to 50 min
1
Pr1
Ac1
Second compressor start delay
0 to 255 sec
5
Pr2
rtr
P1-P2 percentage for regulation
0 to 100 (100=P1 , 0=P2)
100
Pr2
CCt
Continuous cycle duration
0.0 to 24h00min
0.0
Pr2
CCS
Set point for continuous cycle
[-55.0 to 150.0°C]
[-67 to 302°F]
-5 Pr2
Con
Compressor ON time with faulty probe
0 to 255 min
15
Pr2
CoF
Compressor OFF time with faulty probe
0 to 255 min
30
Pr2
CF
Temperature measurement unit
°C to °F
°C
Pr2
rES
Resolution
in=integer; dE= dec.point
dE
Pr1
Lod
Probe displayed
P1; P2
P1
Pr2
dLy
Display temperature delay
0.0 to 20min00sec (10 sec)
0.0
Pr2
dtr
P1-P2 percentage for display
1 to 99
50
Pr2
EdF*
Kind of interval for defrost
rtC; in
in
Pr2
dFP
Probe selection for defrost termination
nP; P1; P2; P3; P4
P2
Pr2
dtE
Defrost termination temperature
-50 to 50°C
8
Pr1
idF
Interval between defrost cycles
1 to 120 hours
6
Pr1
MdF
(Maximum) length for defrost
0 to 255 min
30
Pr1
dFd
Displaying during defrost
rt; it; SEt; DEF
it
Pr2
dAd
MAX display delay after defrost
0 to 255 min
30
Pr2
Fnc
Fan operating mode
C-n; o-n; C-y; o-Y
o-y
Pr1
Fnd
Fan delay after defrost
0 to 255 min
0
Pr1
FCt
Differential of temperature for forced
activation of fans
0 yo 50°C
0 Pr2
FSt
Fan stop temperature
[-50 to 50°C]
[-55 to 122°F]
40 Pr1
Fon
Fan on time with compressor off
0 to 15 min
0
Pr2
FoF
Fan off time with compressor off
0 to 15 min
0
Pr2
FAP
Probe selection for fan management
nP; P1; P2; P3; P4
P2
Pr2
ACH
Kind of action for auxiliary relay
CL; Ht
cL
Pr2
SAA
Set Point
for auxiliary relay
[-55.0 to 150°C]
[-67 to 302°F]
0,0 Pr2
SHy
Differential for auxiliary relay
[0.1 to 25.5°C]
[1 to 45°F]
2,0 Pr2
ArP
Probe selection for auxiliary relay
nP; P1; P2; P3; P4
nP
Pr2
Sdd
Auxiliary relay operating during defrost
n(0); Y(1)
n
Pr2
ALP
Alarm probe selection
nP; P1; P2; P3; P4
P1
Pr2
ALC
Temperat. alarms configuration
rE= related to set;
Ab = absolute
Ab Pr2
ALU
MAXIMUM temperature alarm
[SET to 150.0°C]
[SET to 302°F]
110,0 Pr1
ALL
Minimum temperature alarm
[-55.0°C to SET]
[-67°F to SET]
-50,0 Pr1
Label
Name
Range
°C/°F
Level
AFH
Differential for temperat. alarm recovery
[0.1 to 25.5°C]
[1 to 45°F]
2,0 Pr2
ALd
Temperature alarm delay
0 to 255 min
15
Pr2
dAo
Delay of temperature alarm at start up
0.0 to 23h50min
1,3
Pr2
AP2
Probe for temperat. alarm of condenser
nP; P1; P2; P3; P4
nP
Pr2
AL2
Condenser for low temperat. alarm
[-55 to 150°C]
[-67 to 302°F]
-40 Pr2
AU2
Condenser for high temperat. alarm
[-55 to 150°C]
[-67 to 302°F]
110 Pr2
AH2
Differ. for condenser temp. alar. recovery
[0.1°C to 25.5°C]
[1°F to 45°F]
5 Pr2
Ad2
Condenser temperature alarm delay
0 to 254 min; 255=nU
15
Pr2
dA2
Delay of cond. temper. alarm at start up
0.0 to 23h50min
1,3
Pr2
bLL
Compr. off for condenser low temperature
alarm
n(0); Y(1) n Pr2
AC2
Compr. off for condenser high
temperature alarm
n(0); Y(1) n Pr2
tbA
Alarm relay disabling
n(0); Y(1)
y
Pr2
oA1
Light
relay configuration
ALr = alarm; dEF = do not select
it; Lig =Light; AUS =AUX;
onF=always on; Fan= do not
select it; db = neutral zone; cP2
= second compressor; dF2 = do
not select it; HES = night blind
Lig Pr2
AoP
Alarm relay polarity (oA1=ALr)
oP; cL
cL
Pr2
i1P
Digital input polarity
oP=opening; CL=closing
cL
Pr1
i1F
Digital i
nput 1 configuration
EAL, bAL, PAL, dor; dEF; Htr,
AUS
dor Pr1
did
Digital input alarm delay
0 to 255 min
15
Pr1
i2P
Digital input polarity
oP=opening; CL=closing
cL
Pr2
i2F
Dig
ital input configuration
EAL, bAL, PAL, dor; dEF; Htr,
AUS
EAL Pr2
d2d
Digital input alarm delay
0 to 255 min
5
Pr2
nPS
Number of activation of pressure switch
0 to 15
15
Pr2
odc
Compress and fan status when open door
no; Fan; CPr; F_C
F-c
Pr2
rrd
Regulation restart with door open alarm
n(0); Y(1)
y
Pr2
HES
Differential for Energy Saving
[-30 to 30°C]
[-54 to 54°F]
0 Pr2
Hur*
Current hour
0 to 23
-
rtc
Min*
Current minute
0 to 59
-
rtc
dAY*
Current day
Sun to SAt
-
rtc
Hd1*
First weekly holiday
Sun to SAt; nu
nu
rtc
Hd2*
Second weekly holiday
Sun to SAt; nu
nu
rtc
ILE*
Energy Saving cycle start during
workdays
0.0 to 23h50min 0 rtc
dLE*
Energy Saving cycle length during
workdays
0.0 to 24h00min 0 rtc
ISE*
Energy Saving cycle start on holidays
0.0 to 23h50min
0
rtc
dSE*
Energy Saving cycle length on holidays
0.0 to 24h00min
0
rtc
Ld1*
1st workdays defrost start
0.0 to 23h50min; nu
6.0
rtc
Ld2*
2nd workdays defrost start
0.0 to 23h50min; nu
13.0
rtc
Ld3*
3rd workdays defrost start
0.0 to 23h50min; nu
21.0
rtc
Ld4*
4th workdays defrost start
0.0 to 23h50min; nu
0.0
rtc
Ld5*
5th workdays defrost start
0.0 to 23h50min; nu
0.0
rtc
Ld6*
6th workdays defrost start
0.0 to 23h50min; nu
0.0
rtc
Sd1*
1st holiday defrost start
0.0 to 23h50min; nu
6.0
rtc
Sd2*
2nd holiday defrost start
0.0 to 23h50min; nu
13.0
rtc
Sd3*
3rd holiday defrost start
0.0 to 23h50min; nu
21.0
rtc
Sd4*
4th holiday defrost start
0.0 to 23h50min; nu
0.0
rtc
Sd5*
5th holiday defrost start
0.0 to 23h50min; nu
0.0
rtc
Sd6*
6th holiday defrost start
0.0 to 23h50min; nu
0.0
rtc
LoC
Keyboard lock timer
nu; 10 to 255 sec
60
Pr2
Adr
Serial address
1 to 247
1
Pr2
PbC
Kind of probe
PtC; ntC
ntc
Pr2
onF
on/off key enabling
nu, oFF; ES
oFF
Pr2
dP1
Room probe display
Read Only
-
Pr2
dP2
Evaporator probe display
Read Only
-
Pr2
dP3
Third probe display
Read Only
-
Pr2
dP4
Fourth probe display
Read Only
-
Pr2
rSE
Real set
actual set
-
Pr2
rEL
Software release
Read Only
1.8
Pr2
Ptb
Map code
Read Only
Pr2
* Only for model with real time clock
1592027560 XW30LH-XW30LRH GB r1.0 18.03.2015 XW30LH – XW30LRH 5/5
Loading...