Emerson dixell XW90LT Wiring diagram

1592027600 XW90LT RTC GB r1.1 10.02.2012.doc XW90LT 1/6
Digital controller for medium-low temperature
refrigeration applications
XW90LT
1. GENERAL WARNING........................................................................................................... 1
2. GENERAL DESCRIPTION .................................................................................................... 1
3. CONTROLLING LOADS ....................................................................................................... 1
4. FRONT PANEL COMMANDS ............................................................................................... 1
5. AUTOMATIC KEYBOARD LOCK.......................................................................................... 2
6. MAX & MIN TEMPERATURE MEMORIZATION .................................................................... 2
7. MAIN FUNCTIONS ............................................................................................................... 2
8. PARAMETERS..................................................................................................................... 2
9. DIGITAL INPUTS.................................................................................................................. 4
10. TTL SERIAL LINE – FOR MONITORING SYSTEMS ............................................................. 4
11. X-REP OUTPUT – OPTIONAL.............................................................................................. 4
12. INSTALLATION AND MOUNTING......................................................................................... 4
13. ELECTRICAL CONNECTIONS.............................................................................................. 4
14. HOW TO USE THE HOT KEY .............................................................................................. 4
15. ALARM SIGNALS ................................................................................................................. 5
16. TECHNICAL DATA ............................................................................................................... 5
17. CONNECTIONS ................................................................................................................... 5
18. DEFAULT SETTING VALUES............................................................................................... 5
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.p.A.” (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.
Dixell Srl reserves the right to change the composition of its products, even without notice, ensuring the
same and unchanged functionality.
2. GENERAL DESCRIPTION
Model XW90LT, format 38x185mm, is microprocessor based controller, suitable for applications on
medium or low temperature ventilated refrigerating units. It has 6 relay outputs to control compressor,
fan, defrost, which can be either electrical or reverse cycle (hot gas) and light. The other ones can be
used as auxiliary output or for alarm signalling. It could be provided with a Real Time Clock which
allows programming of up to 6 daily defrost cycles, divided into holidays and workdays. A “Day and
Night” function with two different set points is fitted for energy saving. It is also provided with up to
four NTC or PTC probe inputs, the first one for temperature control, the second one, to be located
onto the evaporator, to control the defrost termination temperature and to managed the fan. One of
the 2 digital inputs can operate as third temperature probe. The fourth probe is used to signal the
condenser temperature alarm or to display a temperature.
The HOT KEY output allows to connect 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 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
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.
Time
Temper.
Compr.
SET
ON
In case of fault in the thermostat probe the start and stop of the compressor are timed through
parameters Con and CoF.
3.2 DEFROST
Two defrost modes are available through the tdF parameter: defrost through electrical heater (tdF =
EL) and hot gas defrost (tdF = in).
The defrost interval depends on the presence of the RTC (optional). If the RTC is present is controlled
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 scheduled 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 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 dripping time is started, its length is set in the Fdt parameter. With 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;
-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 temperature, 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 evaporator fans
This function, managed by the FCt parameter, is designed to avoid short cycles of evaporator fans,
which could happen when the controller is switched on or after a defrost (when the room air warms
the evaporator). If the temperature difference between the 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 compressor), by means of the Fon and FoF
parameters the fans can carry out on and off cycles even if the compressor is switched off. When the
compressor is stopped the fans go on working for the Fon time. With Fon=0 the fans remain always
off, when the compressor is off.
3.4 AUXILIARY OUTPUT CONFIGURATION
The functioning of the auxiliary relay (default terminals 3-4) can be set by the oAx parameters
according to the kind of application. In the following paragraph the possible settings are explaided.
3.4.1 Auxiliary thermostat
A possible use is the anti condensing heater, with the possibility of switching it on and off also by
keyboard.
Parameters involved:
-ACH: kind of regulation for the auxiliary relay: Ht: heating; cL: cooling;
-SAA: set point for auxiliary relay;
-SHy: differential for auxiliary relay;
-ArP: probe for auxiliary relay;
-Sdd: auxiliary output off during defrost.
The differential is given by the SHy parameter.
The auxiliary relay can be switched on also by using the AUX button. In this case it remains on till it’s
manually switched off.
NOTE: If oAx=US and ArP=nP (no probe for auxiliary output), the AUX relay can be activated only by
pushing the AUX button of the keyboard.
3.4.2 On/off relay – oAx = onF
In this case the relay is activated when the controller is turned on and de-activated when the controller
is turned off.
3.4.3 Neutral zone regulation
With oAx=db the AUX relay can control a heater element to perform a neutral zone action.
-output oAx cut in = SET-HY;
-output oAx cut out = SET.
3.4.4 Second compressor
With oAx=CP2, the AUX relay operates as second compressor: it is activated in parallel with the
relay of the first compressor, with a proper activation delay (set in the AC1 parameter). Both the
compressors are switched off at the same time.
3.4.5 Alarm relay
With oAx=ALr the AUX relay operates as alarm relay. It is activated every time an alarm happens. Its
status depends on the tbA parameter:
-tbA=Y: the relay is silenced by pressing any key;
-tbA=n: the alarm relay remains on until the alarm condition recovers.
3.4.6 Night blind management during energy saving cycles
With oAx=HES the AUX relay operates to manage the night blind: the relay is energised when the
energy saving cycle is activated by digital input, frontal button or RTC (optional).
4. FRONT PANEL COMMANDS
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 oAx=Lig.
AUX To switch the auxiliary relay, with oAx=AUS
To activate/de-activate the energy saving cycle

1592027600 XW90LT RTC GB r1.1 10.02.2012.doc XW90LT 2/6
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
ON Auxiliary relay on
°C/°F
ON Measurement unit
Flashing Programming phase
5. AUTOMATIC KEYBOARD LOCK
To avoid accidental modifications of the controller settings, the XW90LT keyboard will be locked
automatically if no key will be touched for 60 seconds. The XW90LT will show “LoC” flashing for
few seconds when it’s locking. The light key is operating even if the keyboard is 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 than 3 sec, while the max or min temperature is displayed. (rSt
message will be displayed).
2. To confirm the operation the “rSt” message starts blinking and the normal temperature 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 push 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.
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 Programming 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 Programming 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 again 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 present in Pr1, after 3 sec the “noP” message will be 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.
7.6.2 MOVE A PARAMETER FROM Pr2 TO Pr1 AND VICEVERSA.
Each parameter present in the Pr2 (HIDDEN MENU) 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 cycle can be activated by keeping the UP key pressed for
about 3 sec. The compressor operates to maintain the CCS set point for the time set through the CCt
parameter. The cycle can be terminated before the end of the set time by keeping the 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 to the normally closed contacts of the relays 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 to 25.5°C; 1 to 45°F) intervention differential for set point.
Compressor Cut IN is Set Point + differential (HY). Compressor Cut OUT is when the
temperature reaches the set point.
LS Minimum set point: (-55°C to SET; -67°F to SET) sets the minimum value for the set
point.
US Maximum set point: (SET to 150°C; SET to 302°F) set the maximum value for set
point.
ot Thermostat probe calibration: (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible
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) allows to adjust possible
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 to 12.0°C; -21 to 21°F) allows to adjust possible
offset of the third probe.
P4P Fourth probe presence: (n; Y) n = Not present; Y = present.
o4 Fourth probe calibration: (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible
offset of the fourth probe.
odS Outputs activation delay at start up: (0 to 255min) 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.
AC Anti-short cycle delay: (0 to 50min) minimum interval between the compressor stop
and the following restart.
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. 10min) allows
to set the length of the continuous cycle. Compressor stays on without 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) it sets the set point
used during the continuous cycle.
Con Compressor ON time with faulty probe: (0 to 255min) time during which the
compressor is active in case of faulty thermostat probe. With Con=0 compressor is
always OFF.

1592027600 XW90LT RTC GB r1.1 10.02.2012.doc XW90LT 3/6
CoF Compressor OFF time with faulty probe: (0 to 255min) 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; °F) °C = Celsius; °F = Fahrenheit.
WARNING: When the measurement unit is changed the SET point and the values 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 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 =
percentage of visualization.
rEd X-REP display (optional): (P1; P2, P3, P4, SET, dtr) it selects which probe is
displayed by X- REP. 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 to 20min00s; res. 10s) when the temperature increases, the
display is updated of 1°C or 1°F after this time.
dtr Percentage of the second and first probe for visualization 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 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 time 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; in) EL = electrical heater; in = hot gas.
dFP Probe selection for defrost termination: (nP; P1; P2; P3; P4) nP = no probe;
P1 =thermostat probe; P2 = evaporator probe; P3 =configurable probe; P4 = Probe on
Hot Key plug.
dtE Defrost termination temperature: (-55 to 50°C; -67 to 122°F) (enabled only when
EdF=Pb) sets the temperature measured by the evaporator probe, which causes the
end of defrost.
idF Interval between defrost cycles: (0 to 120hours) determines the interval of time
between two defrost cycles.
MdF (Maximum) length for defrost: (0 to 255min) when P2P=n, (not evaporator probe:
timed defrost) it sets the defrost duration. When P2P=Y (defrost end based on
temperature) it sets the maximum length for defrost.
dSd Start defrost delay: (0 to 99min) this is useful when different defrost start times are
necessary to avoid overloading the plant.
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 defrost: (0 to 255min) sets the maximum time between the
end of defrost and the restarting of the real room temperature display.
Fdt Drip time: (0 to 120min) 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: (n; Y) n= after the idF time, Y= immediately.
dAF Defrost delay after continuous cycle: (0.0 to 24h00min, res. 10min) time interval
between the end of the fast freezing cycle and the following defrost related to it.
FANS
FnC Fans operating mode: (C-n; o-n; C-Y; o-Y) 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 to 255min) interval between end of defrost and evaporator
fans start.
FCt Temperature differential to avoid fan short cycles: (0 to 59°C; 0 to 90°F) (N.B.:
FCt=0 means function disabled) if the difference of temperature between the evaporator
and the room probes is higher than FCt value, the fans will be switched on.
FSt Fans stop temperature: (-55 to 50°C; -67 to 122°F) setting of temperature, detected
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 the evaporator fan ON 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.
FoF Fan OFF time: (0 to 15min)
With FnC=C_n or C_Y, (fan activated in parallel with compressor) it sets the evaporator
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 = Probe on
Hot Key plug.
AUXILIARY THERMOSTAT CONFIGURATION – OAx = AUS
ACH Kind of regulation for auxiliary relay: (Ht; CL) Ht = heating; CL = cooling.
SAA Set Point for auxiliary relay: (-55.0 to 150.0°C; -67 to 302°F) it 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) intervention differential 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 auxiliary: (nP; P1; P2; P3; P4) nP = no probe, the auxiliary relay
is switched only by the digital input; P1 = Probe 1 (Thermostat 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 alarm: (nP; P1; P2; P3; P4) 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 the 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 recovery: (0.1 to 25.5°C; 1 to 45°F) intervention
differential for recovery of temperature alarm.
ALd Temperature alarm delay: (0 to 255 min) time 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 detection of the temperature alarm condition after instrument 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 = thermostat probe; P2 = evaporator probe; P3 = configurable probe;
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 with low temperature alarm of condenser: (n; Y) n= compressor
keeps on working; Y= compressor is switched off till the alarm is present, in any case
regulation restarts after AC time at minimum.
AC2 Compressor off with high temperature alarm of condenser: (n; Y) n= compressor
keeps on working; Y= compressor is switched off till the alarm is present, in any case
regulation restarts after AC time at minimum.
AUXILIARY RELAYS
tbA Alarm relay silencing (with oAx =ALr): (n; Y) n= silencing disabled: alarm relay stays
on till alarm condition lasts. Y= silencing enabled: alarm relay is switched OFF by
pressing a key during an alarm.
oA3 Third relay configuration (1-3): (dEF; FAn; ALr; LiG; AUS; onF; db; dEF2; HES) dEF
= defrost; FAn = do not select it; ALr = alarm; LiG = light; AUS = Auxiliary relay; onF =
always on with instrument on; db = neutral zone; dEF2 = do not select it; HES = night
blind.
oA4 Fourth relay configuration (22-23): (dEF; FAn; ALr; LiG; AUS; onF; db; dEF2; HES)
dEF = defrost; FAn = do not select it; ALr = alarm; LiG = light; AUS = Auxiliary relay;
onF = always on with instrument on; db = neutral zone; dEF2 = do not select it; HES =
night blind.
oA5 Fifth relay configuration (20-21): (dEF; FAn; ALr; LiG; AUS; onF; db; dEF2; HES)
dEF = defrost; FAn = do not select it; ALr = alarm; LiG = light; AUS = Auxiliary relay;
onF = always on with instrument on; db = neutral zone; dEF2 = do not select it; HES =
night blind.
AoP Alarm relay polarity: (CL; oP) it set if the alarm relay is open or closed when an alarm
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 activated by opening the
contact; CL = the digital input is activated by closing the contact.
i1F First digital input configuration: (EAL; bAL; PAL; dor; dEF; ES; AUS; Htr; FAn;
HdF; onF; Sbt) EAL = external alarm: “EA” message is displayed; bAL = serious alarm
“CA” message is displayed; PAL = pressure switch alarm, “CA” message is displayed;
dor = door switch function; dEF = activation of a defrost cycle; ES = energy saving;
AUS = auxiliary relay activation with oA2=AUS; Htr = type of inverting action (cooling or
heating); FAn = fan; HdF = Holiday defrost (enable only with RTC); onF = to switch the
controller off; Sbt = to activate Sabbath mode.
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” message is displayed; bAL = serious alarm
“CA” message is displayed; PAL = pressure switch alarm, “CA” message is displayed;
dor = door switch function; dEF = activation of a defrost cycle; ES = energy saving;
AUS = auxiliary relay activation with oA2=AUS; Htr = type of inverting action (cooling or
heating); FAn = fan; HdF = Holiday defrost (enable only with RTC); onF = to switch the
controller off; Sbt = to activate Sabbath mode.
did Digital input 1 alarm delay: (0 to 255 min) delay between the detection of the external
alarm condition and its signalling.
When i1F= PAL, it is the interval of time to calculate the number of pressure switch
activation.
doA Door open alarm delay: 0 to 255 min.
nPS Number of pressure switch activation: (0 to 15) Number of activation, during the did
or d2d interval, before signalling an alarm event (i1F, i2F=PAL).
If the nPS activation during did or d2d time is reached, switch off and on the
instrument 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.

1592027600 XW90LT RTC GB r1.1 10.02.2012.doc XW90LT 4/6
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 during an Energy Saving cycle: (-30.0 to 30.0°C; -54 to 54°F) it
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) set the first day of the week which follows the holiday
times.
Hd2 Second weekly holiday: (Sun to nu) set the second day of the week which follows 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 set point is increased by the value in HES so that the operation set
point is SET+HES.
dLE Energy Saving cycle length during workdays: (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 start: (0 to 23h50min) these parameters set the beginning 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 start: (0 to 23h50min) these parameters set the beginning of the 6
programmable defrost cycles on holidays. Ex: when Sd2=3.4 the second defrost
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.
rSE Real set point: it shows the set point used during the energy saving cycle or during the
continuous cycle.
rEL Software release for internal use.
Ptb Parameter table code: readable only.
9. DIGITAL INPUTS
The first digital input (terminals 13-14) 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 is activated the unit will wait for did time delay before signalling the “EAL”
alarm message. The outputs status doesn’t change. The alarm stops just after the digital input is de-
activated.
9.2 SERIOUS ALARM MODE (i1F or i2F = bAL)
When the digital input is activated, the unit will wait for did delay before signalling the “CA” alarm
message. The relay outputs are switched OFF. The alarm will stop as soon as the digital input is de-
activated.
9.3 PRESSURE SWITCH (i1F or i2F = PAL)
If during the interval time set by did parameter, the pressure switch has reached the number of
activation of the nPS parameter; the “CA” pressure alarm message will be displayed. The compressor
and the regulation are stopped. When the digital 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 relay 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 time set through parameter did, the door alarm is enabled,
the display shows the message “dA” and the regulation restarts if rtr=YES. The alarm stops as
soon as the external digital input is disabled again. With the door open, the high and low temperature
alarms are disabled.
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 if the digital input is disabled otherwise the instrument will wait until the MdF safety
time 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 function 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 HOLIDAY DEFROST (i1F or i2F = HDF) (ONLY FOR MODELS WITH RTC)
This function enabled the holiday defrost setting.
9.10 ON OFF FUNCTION (i1F or i2F = onF)
To switch the controller on and off.
9.11 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 connect the instrument to a monitoring 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 XW90LT shall be mounted on vertical panel, in a 150x31 mm hole, and fixed using the special
brackets supplied with the controllers. The temperature range allowed for correct operation is 0 to
60°C. Avoid places subject to strong vibrations, corrosive gases, excessive dirt or humidity. The
same recommendations apply to probes. Let the air circulate by the cooling holes.
12.1 CUT OUT
13. ELECTRICAL CONNECTIONS
The instruments are provided with screw terminal block to connect cables with a cross section up to
2.5 mm2 for the digital and analogue inputs. Relays and power supply have a Faston connection
(6.3mm). Heat-resistant cables have to be used. Before connecting cables make sure the power
supply complies with the instrument’s requirements. Separate the probe cables from the power supply
cables, from the outputs and the power connections. Do not exceed the maximum current allowed on
each relay, in case of heavier loads use 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 thermostat probe away from air streams to correctly
measure the average room temperature. Place the defrost termination probe among the evaporator
fins in the coldest place, where most ice is formed, far from heaters or from the warmest place 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 case of a failed programming 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 automatically 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 message “Err” is displayed for failed programming. 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.

1592027600 XW90LT RTC GB r1.1 10.02.2012.doc XW90LT 5/6
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 some seconds after the fault in the related probe; they
automatically stop some seconds after the probe restarts normal operation. Check connections before
replacing the probe.
Temperature alarms HA, LA, HA2 and“LA2 automatically stop as soon as the temperature returns 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 76mm
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 mm2heat-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: 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
Defrost: relay SPST 8(3) A, 250Vac
Auxiliary: SPST relay 8(3) A, 250Vac
Alarm: SPST relay 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
17. CONNECTIONS
Supply: 120Vac or 24Vac: connect to terminals 11-12
The X-REP output is optional
The light relay can be also 16(5)A according to the model
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 n=not present; Y=present n Pr2
o4 Fourth probe calibration [-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
rEd2 X-REP display P1; P2; P3; P4; SEt; dtr 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
tdF Defrost type EL=el. heater; in= hot gas EL Pr1
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
dSd Start defrost delay 0 to 99min 0 Pr2
dFd Displaying during defrost rt; it; SEt; DEF it Pr2
dAd MAX display delay after defrost 0 to 255 min 30 Pr2
Fdt Draining time 0 to 120 min 0 Pr2
dPo First defrost after start-up n=after idF; y=immed. n Pr2
dAF Defrost delay after fast freezing 0.0 to 23h50min 0.0 Pr2
Fnc Fan operating mode C-n; o-n; C-y; o-Y o-n Pr1
Fnd Fan delay after defrost 0 to 255 min 10 Pr1
FCt Differential of temperature for forced
activation of fans 0 yo 50°C 10 Pr2
FSt Fan stop temperature [-50 to 50°C]
[-55 to 122°F] 2 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
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 P4 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

1592027600 XW90LT RTC GB r1.1 10.02.2012.doc XW90LT 6/6
Label Name Range °C/°F Level
oA3 Third 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
oA4 Fourth 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
AUS Pr2
oA5 Fifth 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
ALr Pr2
AoP Alarm relay polarity (oAx=ALr) oP; cL cL Pr2
i1P Digital input polarity oP=opening; CL=closing cL Pr1
i1F Digital input 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 Digital 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 6.9 Pr2
Ptb Map code Read Only Pr2
* Only for model with real time clock
2Only for XW90LT with X-REP output