Emerson Dixell XWi70K Wiring diagram

15980xxxxx - XWi70K FULL GB R1.3 24.01.2017.docx XWi70K 1/8
XWi70K
VARIABLE SPEED COMPRESSOR
MANAGEMENT
FW RELEASE 17.2
1GENERAL WARNING......................................................................................................... 1
2GENERAL DESCRIPTION.................................................................................................. 1
3CONTROLLING LOADS......................................................................................................1
4AUXILIARY REGULATORS................................................................................................. 2
5ANALOGUE OUTPUTS.......................................................................................................2
6VARIABLE SPEED COMPRESSOR CONTROL.................................................................. 2
7SPECIAL FUNCTIONS........................................................................................................ 2
8KEYBOARDS......................................................................................................................3
9CONTROLLER INTERFACE............................................................................................... 3
10 PROGRAMMING MODE.....................................................................................................3
11 PARAMETER LIST ............................................................................................................. 4
12 DIGITAL INPUT.................................................................................................................. 6
13 INSTALLATION AND MOUNTING....................................................................................... 7
14 ELECTRICAL CONNECTIONS............................................................................................ 7
15 TTL/RS485 SERIAL LINE.................................................................................................... 7
16 HOW TO: USE OF THE PROGRAMMING “HOT KEY”......................................................... 7
17 ALARM SIGNALS ............................................................................................................... 7
18 TECHNICAL DATA .............................................................................................................7
19 CONNECTIONS..................................................................................................................8
20 DEFAULT SETTING VALUES.............................................................................................8
1GENERAL 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 allelectrical connections before any kind of maintenance.
Fit the probe where it is not accessible by the End User. The instrument must not be opened.
In case of failure or faulty operation send the instrument back to the distributor or to “Dixell S.r.l.”
(see address) with a detailed description of the fault.
Consider the maximum current which can be applied to each relay (see Technical Data).
Ensure that the wires for probes, loads and the power supply are separated and far enough from
each other, without crossing or intertwining.
In case of applications in industrial environments, the use of mains filters (our mod. FT1) in
parallel with inductive loads could be useful.
Dixell Srl reserves the right to change the composition of its products, even without notice,
ensuring thesame and unchanged functionality.
2GENERAL DESCRIPTION
Model XWi70K is a microprocessor based controller suitable for applications on medium or low
temperature refrigerating units. It has to be connected by means of a two-wire shielded twisted cable
(1mm) at a distance of up to 30 meters to the keyboard CX/CH620, T620T/H. It is provided with five
relay outputs to control compressor, defrost (which can be either electrical or hot gas), evaporator and
condenser fans and light or alarm. It is also provided with 4 NTC or PTC fully configurable probe
inputs. It has a both a frequency output and a serial port which can be used to control variable speed
compressors. A couple of analogue outputs (4-20mA or 0-10V) and a master 2-wire RS485 output
complete the HW resources.
The HOT KEY output allows connecting the unit, by means of the external module XJ485-CX, to a
network line ModBUS-RTU compatible such as an X-WEB monitoring system. It allows programming
the controller by means the HOT KEY programming tool.
The instrument is fully configurable and it can be easily programmed through the connected keyboard.
3CONTROLLING LOADS
3.1 FIXED SPEED COMPRESSOR CONTROL
The regulation is performed according to the temperature measured by the thermostat probe with a
positive differential from the set point: if the temperature increases and reaches set point plus
differential the compressor is started and then turned off when the temperature reaches the set point
value again. In case of thermostat probe fault, the compressor works in timed mode as set in the
parameters Con and CoF.
3.2 DOUBLE FIXED SPEED COMPRESSOR CONTROL
The controller is able to drive double compressor circuits. To do this, a couple of relays need to be
properly configured: oAx=CP1 and oAy=CP2. The parameters used for this kind of regulation are the
following:
AC Compressor anti short cycle delay: 0 to 50 min
AC1 Second compressor anti short cycle delay: 0 to 255 sec
2CC Activation mode for second compressor: FUL; HAF
rCC Compressors rotation enabled: no; YES
Cdd Compressor used during a defrost phase: CP1; CP2; bC
The second compressor output is activated byfollowing the 2CC parameter:
-If 2CC=FUL then in parallel with the relay of the first compressor (CP1), with a possible
delay as set in the AC1 parameter. Both compressors are switched off at the same time.
-If 2CC=HAF then only if the temperature T>SET+HY+HY1. The delay AC1 is always
respected. The second compressor is deactivated when T<SET+HY.
With parameter rCC it is possible to enable the compressor rotation function: the activation of the first
and the second compressor will be alternated in order to equalize the number of working hours of both
of them. In case of hot gas defrost operation, it is possible to select if one or both compressors will be
used.
3.3 FAST FREEZING
When defrost is not in progress, it can be activated by keeping the UP key pressed for 3 sec. The
compressor will operate 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 using the same activation key UP for 3 sec.
3.4 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). The internal RTC is controlled by
means of the EdF parameter:
-EdF=in: the defrost is made every idF time – standard way for controller without RTC.
-EdF=rtC: the defrost is real time controlled, depending on the hours set in the parameters
Ld1...Ld6 (for workdays).
Other parameters are used to control defrosting cycles: the maximum length (MdF) and defrosting
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.
3.4.1 RANDOM DEFROST
A random defrost mode can be enabled bypar. Syd=rnd. After any defrost request (received by RTC
or timed by par. idF) a random delay will be added. At the end of the added delay the defrost will start.
The random function lead to desynchronize the start of the defrost phases in those cases where more
than a cabinet is installed in the same “island”. The maximum defrost delay is linked to the following
parameters:
-Mdf=maximum time for any defrost
-ndE=delay multiplier
by the following formula:
MAX_DEFROST_DELAY = Mdf*ndE (min)
For example: if ndE=10 and Mdf=20 min, this means that the total interval of time used by any device
for complete its defrost phase is 200 min.
NOTE:
-take care about the interval of time available for defrost. It must be used for decide both Mdf
and ndEvalues
-the higher is the ndE value and the better is the result in terms of desynchronization. On the
other side, the longer will be the total intervalof time required for performing a defrost.
3.5 EVAPORATOR FANS CONTROL
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 willrun even if the compressor is off, and not run during defrost;
After defrost, there is a timed fan delay allowing for drip time, set by means of the Fnd parameter.
FnC = C_Y: fans will switch ON and OFF with the compressor and run during defrost;
FnC = o_Y: fans willrun continuously also during defrost.
The par. FAP is used to select which temperature probe will be used from the evaporator fan
regulator. A specific setpoint (par. FSt) provides the temperature value, 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-HYF.

15980xxxxx - XWi70K FULL GB R1.3 24.01.2017.docx XWi70K 2/8
3.5.1 Forced activation for fans
This function, managed by the FCt parameter, is designed to avoid short cycles of fans, that could
happen when the controller is switched on or after a defrost, when the room air warms the evaporator.
If the difference between the evaporator temperature and the room temperature is higher than the FCt
value, the controller will activate the fans. This function is disabled if FCt=0.
3.5.2 Cyclic activation of the fans when the compressor is switched off.
When FnC=C-n or C-Y (fans in parallel to the compressor), the fans will be able to carry out on and off
cycles even if the compressor is switched off. The on and off interval of time follow the Fon and FoF
parameters. When the compressor is stopped the fans will go on working for the Fon time. On the
other side, with Fon=0 the fans willstay always off when the compressor is off.
3.6 CONDENSER FANS CONTROL
The fan control mode is selected by means of the FCC parameter:
FCC = C_n: fans will switch ON and OFF with the compressor and not run during defrost;
FCC = o_n: fans willrun even if the compressor is off, and not run during defrost;
FCC = C_Y: fans will switch ON and OFF with the compressor and run during defrost;
FCC = o_Y: fans willrun continuously also during defrost.
The par. FAC is used to select which temperature probe willbe used from the condenser fan regulator.
This regulator uses a specific setpoint (par. St2) and differential (par. HY2) in order to activate and
deactivate the condenser fans:
-If T>St2+HY2 the condenser fans are activated
-If T<St2 the condenser fans are deactivated.
4AUXILIARY REGULATORS
Up to 2 auxiliary regulators can be used. Both of them can be linked:
-To a digital output (relay) for ONOFF regulation
-To an analogue output for proportional regulation
The parameters used to configure the auxiliary regulators are the following:
ACH Kind of action for auxiliary regulator
SAA Set point forauxiliary regulator
SHY Differential for auxiliary regulator
ArP Probe selection for auxiliary regulator
Sdd Auxiliary regulator disabled during any defrost
A2C Kind of action for auxiliary regulator 2
SA2 Set point forauxiliary regulator 2
SH2 Differential for auxiliary regulator 2
Ar2 Probe selection for auxiliary regulator 2
Sd2 Auxiliary regulator disabled during any defrost 2
5ANALOGUE OUTPUTS
The controller is equipped with 2 configurable analogue outputs, type 4-20mA or 0-10Vdc (selectable).
It is possible to use them for proportional regulation of:
-Evaporator fan speed
-Condenser fan speed
Or as proportional output linked to the:
-Auxiliary regulator 1
-Auxiliary regulator 2
The parameters used to configure the analogue outputs are the following:
1An Kind of analogue output (4,20mA or 0-10Vdc)
1oL Minimum value for analogue output (in percentage)
1oH Maximum value for analogue output (in percentage)
1At Start-up time with analogue output at 100%
2An Kind of analogue output 2 (4,20mA or 0-10Vdc)
2oL Minimum value for analogue output 2 (in percentage)
2oH Maximum value for analogue output 2 (in percentage)
2At Start-up time with analogue output 2 at 100%
6VARIABLE SPEED COMPRESSOR CONTROL
6.1 FREQUENCY MODE
The controller is able to drive Embraco variable speed compressor with frequency control input. The
frequency output port is able to issue a frequency signal from 30 to 200Hz, duty cycle=50%. A special
cable has to be used in order to connect the frequency output of the controller to the frequency input of
the specific inverter.
-CAB/EMB2: cable DD900002 20 for Embraco VNEK/U models
One of the available relays can be set as oAx=inV in order to controlthe compressor power supply.
NOTE: an inverter compressor can be completely controlled from the frequencyoutput only.
6.1.1 CABLE FOR FREQUENCY MODE CONTROL
EMBRACO
GRAY GND (-)
PINK FREQ (+)
6.2 SERIAL MODE CONTROL
The controller is able to drive Embraco variable speed compressor with serial control input. A special
cable has to be used in order to connect the serial port of the controller to the serial port of the specific
inverter.
-CAB/EMB 1.5MT: cable DD190001 51 for Embraco VNEK/U models
One of the available relays can be set as oAx=inV in order to controlthe compressor power supply.
6.2.1 CABLE FOR SERIAL MODE CONTROL
EMBRACO
6.3 PARAMETERS
The following parameters are used to set the regulation:
HY1 Differential for proportional regulation: (0.1 to 25.5°C; 1 to 45°F)
PMi Minimum compressor speed (in percentage): (0 to PMA)
PMA Maximum compressor speed (in percentage): (PMi to 100%)
voS Signal output variation (increment) when temperature is increasing: (1 to 100
Hz/min)
vo2 Signal output variation (decrement) when temperature is decreasing: (0 to 100
Hz/min)
vo3 Signal output variation (decrement) after any Pull Down: (0 to 100 Hz/min)
t1F Time with compressor at PMI before stopping regulation: (0 to 999 min)
SPi Compressor speed (in percentage) in case of any error probe: (Pmi to PMA)
CMn Continuous mode during Normal Mode: (n; Y)
CME Continuous mode during Energy Saving Mode: (n; Y)
The value of the par HY1 can normally be set to the same value of par. HY. In this way, the regulation
band will be extended from SET to SET+HY+HY1. The device will activate the regulation when the
measured temperature will go over the SET+HY value and will stop the regulation when the
temperature will reach the SET value. When the regulation is running, the frequency output, and then
the compressor speed, will be calculated in proportional way by using the PMi…PMA band. After
reaching the SET+HY value, the controller will start increasing the frequency output, and then the
equivalent compressor speed, by using the par. voS. The speed increasing will be stopped as soon as
the proportional calculated value (for the compressor speed) hooks the requested value. In case of
temperature decrement and compressor speed higher than the new requested value, the controller will
decrease the compressor speed proportionally by using the vo2 value. After any Pull Down, and in
case of continuous mode regulation (CMn or CME=Y) it is possible to speed up the compressor speed
decrement by using par. vo3. This helps to avoid subfreezing conditions due to high compressor
speed after reaching the regulation setpoint.
After reaching the SET value it is possible to force the compressor speed to Pmi for t1F min.
I case of regulation probe error, the compressor speed will be set to the value of par. SPi.
It is possible to enable a cyclic or a continuous mode operation both during normal mode or energy
saving mode:
-CMn, CME = Y: after reaching the SETPOINT the VSC willkeep on running
-CMn, CME = n: after reaching the SETPOINT the VSC willbe stopped (after t1F)
6.4 TEMPERATURE DEADLOCK CONTROL
The controller is able to detect temperature deadlocks. If the actual speed is not able to reach the
SETPOINT, and if this condition persists for a long interval of time, then the controller will increment
the actual speed until reaching the SETPOINT. A differential (par. th1) and a speed increment (par.
oFS) is used to detect and manage any deadlock condition.
6.5 HOT GAS DEFROST
In case of using hot-gas defrost, it will be possible to set the compressor speed by using par. Aod.
6.6 PULL DOWN
An automatic function named PULL DOWN is implemented. This function forces the controller to work
at PMA until reaching a specific SETPOINT (par. CCS) for a maximum interval of time (par. CCt). The
PULL DOWN function is activated:
-At start-up if the temperature measured from the regulation probe is higher than the
SET+HY+HY1
-After any defrost
-If the temperature measured from regulation probe go over the SET+HY+HY1+oHt value.
If one of the above conditions happens, the controller will maintain the maximum compressor speed
(PMA) until reaching the CCS setpoint. The maximum interval of time for any PULLDOWN is defined
from par. CCt. At the end of any PULL DOWN it is possible to set an interval of time (par. t1F) with
predefined compressor speed (PMi).
6.7 OIL MIGRATION CONTROL (VALID ONLY FOR VSC)
In order to avoid oil migration during variable speed compressor operation, a lubrication control is
implemented. If the compressor works with a speed lower than the MnP threshold for tMi time, then
the compressor speed willbe increased to PMA for tMA time.
7SPECIAL FUNCTIONS
By using the parameters oAx it is possible to configure the functions of the relay outputs as described
in the following paragraphs:
7.1 LIGHT RELAY (OAX = LIG)
By setting oAx=Lig the relay will work as light relay, it isswitched on and off by the light button on the
keyboard and is affected by status of thedigital input when i1F=dor.
The parameter LHt (Light timer) sets the time the light will stay on after pressing the light switch on
the keyboard. Every time the key is pushed the timer is re-loaded.
7.2 SECOND COMPRESSOR MANAGEMENT (OA4 = CP2)
By setting one of the parameters oA4=CP2, the correspondent relay will operate as “second
compressor”. It will be activated in parallel with the relay of the first compressor, with a possible delay
set in the AC1 parameter (seconds).

15980xxxxx - XWi70K FULL GB R1.3 24.01.2017.docx XWi70K 3/8
7.3 ON –OFF RELAY (OAX = ONF)
By setting one of the parameters oAx=onF, correspondent the relay will operate as “on-off” relay: it
will be activated when the controller is switched on and it will be switched off when the controller is in
stand-by status.
7.4 ALARM RELAY (OAX=ALR)
By setting oAx=ALr the correspondent relay will work as alarm relay, it is switched on when an alarm
happens.
Parameters involved:
-tbA (n, y) Alarm relaysilencing
-AoP (cL; oP) Alarm relay polarity
7.5 ANTI-SWEAT HEATER (OAX=TIM)
If oAx=tiM, the correspondent relay will be able to work as Anti-Sweat Heater output.
The relay will work based on the parameters btA (base time setting: seconds or minutes), AtF (output
OFF time) and Ato (output ON time) with the following logic: the relay output will cycle (starting with
the OFF time) between OFF and ON status.
7.6 ENERGY SAVING TIMEOUT
If the Energy Saving function has been activate by buttons or digital input, the Energy Saving will be
automatically deactivated once the time defined in the parameter ESt is expired. If the value of ESt=0
the timeout is not considered and the Energy Saving, once activated bybutton or digital input, can be
deactivated only manually by the user.
7.7 NEUTRAL ZONE (OAX=DB)
By setting oAx=db the controller will perform a
“neutral zone”regulation.
The heating element has to be connected to the
correspondent relay.
If the temperature increases and reaches set
point plus differential (HY) the compressor is
started and then turned off when the
temperature reaches the set point value again.
If the temperature decreases and reaches the
set point minus differential (HY) the output
(heater) is switched on and then turned OFF
when the temperature reaches again the set
point.
8KEYBOARDS
Depending on the type of keyboard, some special function could be linked to predetermined buttons.
Follow here below some examples.
8.1 CH620 OR CX620 KEYBOARD
8.2 T620T OR T620H KEYBOARD
To display and modify target set point; in programming mode it selects a parameter
or confirm an operation. By holding it pressed for 3
sec when max or min
temperature is displayed it will be erased.
(UP
) To see the max stored temperature; in programming mode it browses the
parameter codes or increases thedisplayed value.
(DOWN) To see the min stored temperature; in programming
mode it browses the
parameter codes or decreases the displayed value.
(DEF) By holding it pressed for 3 sec the defrost is started.
(LIG) Switch ON and OFF the cold room light.
(ONOFF) Switch ON and OFF the instrument.
KEY COMBINATIONS
+
To lock and unlock the keyboard.
+
To enter the programming mode.
+
To exit the programming mode.
8.3 USE OF LEDS
Each LED function is described in the following table.
LED MODE Function
ON The compressor is running
FLASHING - Programming Phase (flashing with LED )
- Anti-short cycle delay enabled
ON The fan is running
FLASHING Programming Phase (flashing with LED )
ON The defrost is enabled
FLASHING Drip time in progress
ON - ALARM signal
- In “Pr2” indicates that the parameter is also present in “Pr1”
ON Pull down is running
eco ON Energy saving enabled
ON Light on
ON Auxiliary relay on (CX/CH620 only)
°C/°F ON Measurement unit (CX/CH620 only)
9CONTROLLER INTERFACE
HOW TO: SET THE CURRENT TIME AND DAY (ONLY WITH RTC)
When the instrument is switched on, it could be necessary to program the real time clock. This
operation requires to enter the rtC menu (depending on the visibility level) and set the following
parameters: HUr (hours), Min (minutes), dAy (day of the week), dYM (day of the month) Mon (month)
and YAr (year).
9.1 HOW TO SEE THE MIN TEMPERATURE
1.
Press and release the DOWN key.
2. The “Lo” message will be displayed followed by the minimum temperature recorded.
3. By pressing the DOWN key or waiting for 5 sec the normal display will be restored.
9.2 HOW TO SEE THE MAX TEMPERATURE
1.
Press and release the UP key.
2. The “Hi” message will be displayed followed by the maximum temperature recorded.
3. By pressing the UP key or waiting for 5 sec the normal display willbe restored.
9.3 HOW TO RESET THE MAX AND MIN TEMPERATURE RECORDED
To reset the stored temperature, when max or min temperature is displayed:
1. Press SET keyuntil“rSt” labelstarts blinking.
Note: after the installation remember to RESET the temperature stored.
9.4 HOW TO SEE AND MODIFY THE SET POINT
1. Push and immediately release the SET key: the displaywillshow the Set point value;
2. To change the SEt value, push the UP or DOWN arrows within 10 sec.
3. To memorise the new set point value push the SET key again or wait for 10 sec.
9.5 TO START A MANUAL DEFROST
1. Push the DEF key for more than 2 sec and a manual defrost willstart.
9.6 ON/OFF FUNCTION (STAND BY)
By pushing the ON/OFF key, the instrument shows “OFF” for 5 sec. and the ON/OFF LED
is switched ON.
During the OFF status, all the relays are switched OFF and the regulations are stopped; if
a monitoring system is connected, it does not record the instrument data and alarms.
When the instrument is in stand by the keyboard displays “oFF”.
N.B. During the OFF status the Light and AUX buttons are active.
9.7 TO SEE THE PROBE VALUES
1.
Enter in “Pr1” level.
2. Parameters “dP1”, “dP2”, “dP3” and “dP4” display the value of probes P1, P2, P3 and P4.
10 PROGRAMMING MODE
The configuration parameters are divided in groups (named menu). After entering the programming
mode, the first label corresponding to the first available group (menu) will appear on the display
depending on the visibility level. Every parameter belonging to a specific menu has its own visibility
rules for placement in PR1 (user accessible parameters) or PR2 (hidden parameters). Any menu can
have parameters placed both in PR1 and/or PR2.

15980xxxxx - XWi70K FULL GB R1.3 24.01.2017.docx XWi70K 4/8
10.1 HOW TO ENTER PARAMETER MENUS UNDER “PR1” LEVEL
To enter a parameter list under “Pr1” level (user accessible parameters), under a specific menu,
operate as follows:
+
1. Enter the Programming mode by pressing the SET+DOWN key for
3 seconds.
2. The display will show the first menu available under “Pr1” level
10.2 HOW TO ENTER PARAMETERS MENUS UNDER “PR2” LEVEL
In the PR2 level there are all the parameters of the instrument.
10.2.1 ENTERING THE PARAMETER MENU UNDER PR2 LEVEL
1. Enter the Programming mode by pressing the SET+DOWN keys for 3 sec: the label of the first
menu available in Pr1 will be displayed (for example: rEG)
2. Release the keys and then push again the SET+DOWN keys more than 7 sec: during this time
both compressor and fan icon will blink. After 7 sec the “Pr2” label will be displayed immediately,
and, after releasing the SET+DOWN keys, the first parameter menu available will be displayed (for
example: rEG)
NOW THE PARAMETER MENU PR2 IS AVAILABLE FOR MODIFICATION
NOTE:
if no parameter is present in the “Pr1” level, after the first 3 sec the “noP” message will be
displayed. Keep SET+DOWN keys pushed tillthe “Pr2” message will be displayed.
10.2.2 HOW TO: MOVE A PARAMETER FROM THE HIDDEN MENU TO THE FIRST LEVEL
AND VICEVERSA.
Each parameter present in the PR2 level can be moved or put into PR1 level (user level) by pressing
SET+DOWN keys. When in PR2 menu, if a parameter is present also in the First Level (Pr1), the
decimal point will be lit.
10.2.3 HOW TO CHANGE A PARAMETER VALUE
1. Enter the programming mode (both in PR1 or PR2 level)
2. Select the required menu with UP or DOWN
3. Press the SET button to enter the parameter list belonging to the selected menu
4. The first available parameter label (depending on the visibility level) will be displayed. The
compressor icon willblink in order to indicate the position in the selected menu
5. Select the required parameter by using UP or DOWN buttons.
6. Press the SET key to display the current value (compressor and fan icon starts blinking to indicate
this condition)
7. Use UP or DOWN to change its value.
8. Press SET to store the new value and move to the following parameter (belonging to the same
menu)
To exit: Press SET+UP or wait for 30 sec without pressing any key.
NOTE:
-the new programming is stored even when the procedure ends by waiting the time-out
-the LIGHT button is used as BACK function when into PROGRAMMING MODE: press it
to exit from a parameter list and return to the upper menu or to discard a parameter value
modification and return to the same parameter label (without changing the previous
parameter value)
10.3 KEYBOARD CONTROL
+
1.
Keep the UP and DOWN keys pressed together for more than 3 sec the UP and
DOWN keys.
2. The “PoF” message willbe displayed and the keyboard is locked. At this point it is
only possible the viewing of the set point or the MAX o Min temperature stored and
to switch ON and OFF the light, the auxiliary output and the instrument.
TO UNLOCK THE KEYBOARD
Keep the UP and DOWN keys pressed together for more than 3 sec.
11 PARAMETER LIST
The configuration parameters are divided in groups (named menu) in order to speed up the browsing
operations. Here below the list of all Menu with their meaning:
rEG Regulation menu: to set regulation band
Prb Real time clock menu (only for controller with RTC): to set the time and date and
defrost start time.
vSC Variable Speed Compressors menu: to set the VSC functional parameters
diS Display menu: to set the visualization rules
dEF Defrost menu: to set thedefrost operationalmode
FAn Ventilator menu: to set the ventilator controlmode
AUS Auxiliary menu: to set the auxiliary output mode
dYn Dynamic Set Point: used to modify the condenser fan regulator output
ALr Alarm menu: to set the alarm thresholds
oUt Output menu: to set the function linked to any configurable output
inP Input menu: to set the function linked to any configurable input
ES Energy saving menu: to set the energy saving mode
rtC Real Time Clock menu: to set the internalclock
oth Others menu: to set other functions like serial address, keyboard functions, real
probe value visualization
REGULATION MENU - rEG
LS Minimum set point value: (-55°C to SET; -67°F to SET) sets the minimum value for the
set point.
US Maximum set point value: (SET to 150°C; SET to 302°F) set the maximum value for
set point.
HY Differential for normal regulation: (0.1 to 25.5°C; 1 to 45°F) differential for set point.
Compressor Cut IN is Set Point + differential (HY). Compressor Cut OUT is when the
temperature reaches the set point.
odS Outputs delay activation after power-on: (0 to 255min) this function is enabled at the
initial startup of the instrument and inhibits any output activation for the period of time set
in the parameter.
AC Compressor anti-short cycle delay: (0 to 50min) minimum interval between the
compressor stop and the following restart.
AC1 Second compressor anti short cycle delay: (0 to 255 sec) delay before activating
second compressor, depending on regulation mode selected by par. 2CC
2CC Activation mode for second compressor: (FUL; HAF) FUL=second compressor
activated in parallel with first one. HAF=second compressor activated with step logic.
rCC Compressors rotation enabled: (n;Y) n= CP1 is always the first compressor activated.
Y= CP1 and CP2 activation is alternated
MCo Maximum time with compressor active: (0 to 255min) maximum time with ONOFF
compressor active. With MCo=0 this function is disabled.
Cdd Compressor used during a defrost phase: (CP1; CP2; 2C) which compressor will be
used during a defrost operation. CP1=only compressor 1; CP2=only compressor 2;
2C=both compressors.
rtr P1 and P2 percentage value 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 Maximum duration for Pull Down: (0.0 to 24h00min, res. 10min) allows setting the
length of the PULL DOWN cycle. Compressor stays on without interruption during CCt
time. This is useful, for instance, when the room is filled with new products.
CCS Differential for Pull Down (SET+CCS or SET+CCS+HES): (-12 to 12°C; -21 to 21°F)
relative value to add to the regulation SETPOINT and to use during any PULL DOWN
cycle.
oHt Threshold for automatic activation of PULL DOWN: (0.0 to 25.5°C; 0 to 45°F) upper
threshold for auto activation of a PULL DOWN
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 (not valid for VSC compressors).
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 (not valid for VSC compressors).
PROBE MENU – Prb
PbC Probe type selection: ntC; PtC
ot Probe P1 calibration: (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible offset of
the thermostat probe. Terminals 1-2.
P2P Probe P2 presence: (n; Y) n= not present, the defrost stops bytime;
Y= present, thedefrost stops bytemperature. Terminals 2-3
oE Probe P2 calibration: (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible offset of
the second probe. Terminals 2-3.
P3P Probe P3 presence (P3): (n; Y) n= not present, Y= present. Terminals 4-5
o3 Probe P3 calibration (P3): (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible
offset of the third probe. Terminals 4-5
P4P Probe P4 presence: (n; Y) n = Notpresent; Y = present. Terminals 5-6
o4 Probe P4 calibration: (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible offset of
the fourth probe. Terminals 5-6
VARIABLE SPEED COMPRESSOR MENU - vSC
HY1 Differential for proportional regulation: (0.1 to 25.5°C; 1 to 45°F) differential for
proportional regulation band
Fr0 Frequency output value with compressor stopped: (0 to 50Hz) frequency output
signal when compressor stopped
PMi Minimum compressor speed (in percentage): (0 to PMA) minimum compressor
speed for proportionalregulation
PMA Maximum compressor speed (in percentage): (PMi to 100%) maximum compressor
speed for proportionalregulation
vdC Type of variable speed compressor: (nu; FrE; VC1; VC2) nu = no variable speed
compressor connected; FrE = frequency command; VC1 = Embraco VNEK/U type; VC2
= do not use it
voS Signal output variation (increment) when temperature is increasing: (1 to 100Hz)
vo2 Signal output variation (decrement) when temperature is decreasing: (0 to 100Hz)
vo3 Signal output variation (decrement) after any Pull Down: (0 to 100Hz)
PdP Compressor speed (in percentage) during a Pull Down: (0 to 100%)
t1F Time with compressor at PMI before stop: (0 to 255 min) interval of time with
compressor speed at PMi before stopping the regulation
SPi Compressor speed (in percentage) in case of any probe error: (PMi to PMA) fixed
value for compressor velocity when error probe is active
Aod Compressor speed (in percentage) during any defrost: (0 to 100%) fixed value for
compressor velocity during any defrost
AoF Compressor speed during a pre-defrost phase: (0 to 100%) fixed value for
compressor velocity during any pre-defrost phase (par. StC)
tH1 Differential for deadlock control: (0.1 to 1.0°C) differential for deadlock control

15980xxxxx - XWi70K FULL GB R1.3 24.01.2017.docx XWi70K 5/8
oFS Speed increment during deadlock condition: (1 to 10Hz) increment for compressor
velocity during any deadlock condition
CMn Continuous mode during normal mode: (n; Y) n=the compressor will be stopped
after reaching the SETPOINT. Y=the compressor will keep on running after reaching
the SETPOINT.
CME Continuous mode during energy saving mode: (n; Y) n=the compressor will be
stopped after reaching the SETPOINT. Y=the compressor will keep on running after
reaching the SETPOINT.
MnP Minimum compressor speed for lubrication control activation (valid only for
VSC): (0 to 100%) threshold value used to activate the lubrication function
tMi Compressor running time below the MnP threshold: (0 to 24h00min) interval of time
with compressor velocity below MnP before activating the lubrication function
tMA Interval of time with compressor a PMA during lubrication control: (0 to 255 sec)
interval of time with compressor velocity a PMA
A00 Number of serial controlled compressors: (0 to 2) how many variable speed
compressors controlled via serial mode. 0 = none; 1=1 VSC; 2=do not use it.
DISPLAY MENU - diS
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 related to the temperature have to be checked and modified (if
necessary).
rES Resolution for °C: (in=1°C; dE=0.1°C) allowsdecimal point display.
rEd Remote display (P1; P2, P3, P4, SET, dtr) it selects which probe is displayed by the
controller. P1 = Thermostat probe; P2 = Second probe; P3 = Third probe; P4 = Fourth
probe, SET = set point; dtr = percentage of visualization.
dLY Temperature visualization delay: (0 to 20min00s; res. 10s) when the temperature
increases, the display is updated of 1°C or 1°F after this time.
Dtr Visualization percentage F(P1;P2): (0 to 99; 100=P1, 0=P2) if rEd=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 MENU - dEF
EdF Defrost mode: (rtC; in; ond) rtC = realtime clock control; in = interval of time control
tdF Defrost type: (EL; in) EL = electricalheater; in = hot gas.
dFP Probe selection for defrost control: (nP; P1; P2; P3; P4) nP = no probe;
P1 =thermostat probe; P2 = Second probe; P3 =Third probe; P4 = Fourth Probe
dtE Defrost end 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 two consecutive defrost cycles: (0 to 120hours) determines the
interval of time between two defrost cycles.
MdF Maximum length for any defrost: (0 to 255min) when P2P = nP, (not evaporator
probe: timed defrost) it sets the defrost duration. When P2P different from nP (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.
StC Compressor stop before activating any hot-gas defrost operation: (0 to 30 min) is
used stop the compressor when a defrost is managed for inversion (hot-gas).
dFd Displaying during defrost: (rt; it; SEt; dEF) rt = realtemperature;
it = temperature at defrost start; SEt = set point; dEF = “dEF”label.
dAd Delay for display temperature updating after any defrost: (0 to 255min) sets the
maximum time between the end of defrost and the restarting of the real room
temperature display.
Fdt Driping 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 Defrost after power-on: (n; Y) n= after the idF time, Y= immediately.
dAF Delay before activating the defrost output (used only if tdF=in): (0 to StC) used to
delay the activation of the defrost output.
Syd Type of synchronized defrost: (nu; Syn; rnd) nu=not used; Syn=do not use it;
rnd=random defrost function
ndE Number of devices for random defrost (Syd=rnd): (1 to 20) used to determinate the
number of appliances with random defrost function active
VENTILATORI FAN MENU - FAn
FAP Probe selection for evaporator fan management: (nP; P1; P2; P3; P4) nP = no probe;
P1 =thermostat probe; P2 = Second probe; P3 =Third probe; P4 =Fourth probe.
FSt Evaporator fan stop temperature: (-55 to 50°C; -67 to 122°F) setting of temperature,
detected byevaporator probe, above which fans are always OFF.
HYF Differential for evaporator fan: (0.1 to 25.5 °C; 1 to 45°F) differential used for
evaporator fan regulator
FnC Evaporator fan 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, ONduring defrost.
Fnd Evaporator fan delay after any defrost: (0 to 255min) interval between end of defrost
and evaporator fans start.
FCt Temperature differential for evaporator fan activation: (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.
Ft Evaporator fan controlled during defrost: (no; Yes) no = fan stopped during defrost;
Yes = fan controlled during anydefrost
Fon Evaporator fan ON time (with compressor OFF): (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=0the fan are always off.
FoF Evaporator fan OFF time (with compressor OFF): (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.
FAC Probe selection for condenser fan: (nP; P1; P2; P3; P4) nP = no probe, regulator
disabled; P1 =thermostat probe; P2 = Second probe; P3 =Third probe; P4 =Fourth probe.
St2 Regulation Set Point for condenser fan: (-100 to 200 °C; -148 to 302°F) set point used
for condenser fan regulator
HY2 Differential for condenser fan: (0.1 to 25.5°C; 1 to 45°F) differential used for condenser
fan regulator
FCC Condenser fan mode operation: (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, ONduring defrost
AUXILIARY MENU – AUS
ACH Kind of action for Auxiliary regulator: (CL; Ht) CL = cooling; Ht= heating
SAA Set point for auxiliary regulator: (-100 to 200 °C; -148 to 302°F) set point used for
auxiliary regulator
SHY Differential for auxiliary regulator: (0.1 to 25.5°C; 1 to 45°F) differential used for
auxiliary regulator
ArP Probe selection for auxiliary regulator: (nP; P1; P2; P3; P4) nP = no probe, regulator
disabled; P1 =thermostat probe; P2 = Second probe; P3 =Third probe; P4 =Fourth probe
Sdd Auxiliary regulator disabled during any defrost: (n; Y) n= enabled; Y =disabled
A2C Kind of action for Auxiliary regulator 2: (CL; Ht) CL = cooling; Ht= heating
SA2 Set point for auxiliary regulator 2: (-100 to 200 °C; -148 to 302°F) set point used for
auxiliary regulator 2
SH2 Differential for auxiliary regulator 2: (0.1 to 25.5°C; 1 to 45°F) differential used for
auxiliary regulator 2
Ar2 Probe selection for auxiliary regulator 2: (nP; P1; P2; P3; P4) nP = no probe, regulator
disabled; P1 = thermostat probe; P2 =Second probe; P3 =Third probe; P4 = Fourth probe
Sd2 Auxiliary regulator 2 disabled during any defrost: (n; Y) n = enabled; Y =disabled
btA Base time for parameter Ato and AtF: (Min; SEC) Min=base time is in minutes;
SEC=base time is in seconds
Ato Interval of time with auxiliary output active: 0 to 255
AtF Interval of time with auxiliary output not active: 0 to 255
1An Kind of analogue output 1: (VLt; Cur) VLt = 0-10Vdc; Cur=4-20mA
1oL Minimum value for analogue output 1 (in percentage): (0 to 100%) output value at the
beginning of the scale
1oH Maximum value for analogue output 1 (in percentage): (0 to 100%) output value at the
end of the scale
1At Start-up time with analogue output 1 at 100%: (0 to 255 sec) analogue output will be
forced at 100% for this intervalof time after anypower-on
2An Kind of analogue output 2: (VLt; Cur) VLt = 0-10Vdc; Cur=4-20mA
2oL Minimum value for analogue output 2 (in percentage): (0 to 100%) output value at the
beginning of the scale
2oH Maximum value for analogue output 2 (in percentage): (0 to 100%) output value at the
end of the scale
2At Start-up time with analogue output 2 at 100%: (0 to 255 sec) analogue output will be
forced at 100% for this intervalof time after anypower-on
DYNAMIC SET POINT – dYn
dSi Reference probe for dynamic set point function: (nP; P1; P2; P3; P4) nP = no probe,
regulator disabled; P1 = thermostat probe; P2 = Second probe; P3 =Third probe; P4 =
Fourth probe
dSS Regulation set point for dynamic set point function: (-100 to 200 °C; -148 to 302°F)
regulation set point used
dSb Regulation band for dynamic set point: (-50 to +50°C; -58 to 122°F) band of action for
dynamic set point
dSH Differential for dynamic set point: (-50 to 50°C; -100 to 100°F) differential used
ALARM MENU - ALr
ALP Temperature alarm probe selection: (nP; P1; P2; P3; P4) nP = no probe, the
temperature alarms are disabled; P1 = Probe 1 (Thermostat probe); P2 = Probe 2; P3 =
Probe 3; 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 Temperature alarm recovery differential: (0.1 to 25.5°C; 1 to 45°F) intervention
differentialfor recovery of temperature alarm.
ALd Temperature alarm delay: (0 to 255 min) time interval between the detection of an alarm
condition and alarm signaling.
dot Temperature alarm delay when door is open: (0 to 255 min) delay before activating the
door open alarm
dAo Temperature alarm delay at power-on: (0.0 to 24h00min, res. 10min) time interval
between the detection of the temperature alarm condition after instrument power on and
alarm signaling.
AP2 Second temperature alarm probe selection: (nP; P1; P2; P3; P4)
nP = no probe; P1 = thermostat probe; P2 = second probe; P3 = Third probe; P4 = Fourth
probe.
AL2 Second low temperature alarm: (-55 to 150°C; -67 to 302°F) when this temperature is
reached the LA2 alarm is signaled, possibly after the Ad2 delay.
Au2 Second high temperature alarm: (-55 to 150°C; -67 to 302°F) when this temperature is
reached the HA2 alarm is signaled, possibly after the Ad2 delay.
AH2 Second temperature alarm recovery differential: 0.1 to 25.5°C; 1to 45°F.
Ad2 Second temperature alarm delay: (0 to 255 min) time interval between the detection of
the condenser alarm condition and alarm signaling.
dA2 Second temperature alarm activation delay after power on: 0.0 to 24h00min, res.
10min.

15980xxxxx - XWi70K FULL GB R1.3 24.01.2017.docx XWi70K 6/8
bLL Compressor off due to second low temperature alarm: (n; Y) n= compressor keeps
on working; Y= compressor is switched off tillthe alarm is present, in any case regulation
restarts after AC time at minimum.
AC2 Compressor off due to second high temperature alarm: (n; Y) n= compressor keeps
on working; Y= compressor is switched off tillthe alarm is present, in any case regulation
restarts after AC time at minimum.
SAF Differential for anti-freezing control: (0.0 to 25.5°C; 0 to 45°F) lower threshold used to
avoid freezing conditions. If T<SET-SAF, then the compressor will be stopped. If SAF=0
this function is disabled.
tbA Alarm relay deactivation (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.
bUM Buzzer muting: (n; Y) n= buzzer cannot be stopped; Y= buzzer activation due to any
alarm can be stopped
OUTPUT CONFIGURATIONS – oUt
oA1
(20-21) Relay 1 configuration, terminals 16-17: (nu; onF; dEF; Fan; Alr; LiG; Au1; Au2; db; CP1; CP2; dF2; HES; Het; inV; tiM; Cnd) nu=not used; onF = always on with
instrument on; dEF=defrost; Fan=Fan; Alr=alarm; LiG=light; Au1=auxiliary output;
Au2=not used; db=neutral zone; CP1, CP2=do not select it; dF2=do not select it;
HES=night blinds; Het=do not select it; inV=inverter output; tiM=timed mode
activation; Cnd=condenser fan
oA2
(16-17) Relay 2 configuration, terminals 20-21: (nu; onF; dEF; Fan; Alr; LiG; Au1; Au2; db; CP1; CP2; dF2; HES; Het; inV; tiM; Cnd) nu=not used; onF = always on with
instrument on; dEF=defrost; Fan=Fan; Alr=alarm; LiG=light; Au1=auxiliary output;
Au2=not used; db=neutral zone; CP1, CP2=do not select it; dF2=do not select it;
HES=night blinds; Het=do not select it; inV=inverter output; tiM=timed mode
activation; Cnd=condenser fan
oA3
(18-19) Relay 3 configuration, terminals 22-23: (nu; onF; dEF; Fan; Alr; LiG; Au1; Au2; db; CP1; CP2; dF2; HES; Het; inV; tiM; Cnd) nu=not used; onF = always on with
instrument on; dEF=defrost; Fan=Fan; Alr=alarm; LiG=light; Au1=auxiliary output;
Au2=not used; db=neutral zone; CP1, CP2=do not select it; dF2=do not select it;
HES=night blinds; Het=do not select it; inV=inverter output; tiM=timed mode
activation; Cnd=condenser fan
oA4
(22-23) Relay 4 configuration, terminals 29-30-31: (nu; onF; dEF; Fan; Alr; LiG; Au1; Au2; db; CP1; CP2; dF2; HES; Het; inV; tiM; Cnd) nu=not used; onF = always on with
instrument on; dEF=defrost; Fan=Fan; Alr=alarm; LiG=light; Au1=auxiliary output;
Au2=not used; db=neutral zone; CP1, CP2=do not select it; dF2=do not select it;
HES=night blinds; Het=do not select it; inV=inverter output; tiM=timed mode
activation; Cnd=condenser fan
oA5
(29-30-
31)
Relay 4 configuration, terminals 29-30-31: (nu; onF; dEF; Fan; Alr; LiG; Au1; Au2;
db; CP1; CP2; dF2; HES; Het; inV; tiM; Cnd) nu=not used; onF = always on with
instrument on; dEF=defrost; Fan=Fan; Alr=alarm; LiG=light; Au1=auxiliary output;
Au2=not used; db=neutral zone; CP1, CP2=do not select it; dF2=do not select it;
HES=night blinds; Het=do not select it; inV=inverter output; tiM=timed mode
activation; Cnd=condenser fan
1Ao Analogue output 1 (4-20mA; 0-10Vdc): (nu, tiM, FAn, AUS, ALr, Cnd) nu = not
used, regulator disabled; tiM = timed mode; FAn = linked to the evaporator fan
regulator; ALr = linked to any alarm condition; Cnd = linked to the condenser fan
regulator
2Ao Analogue output 2 (4-20mA; 0-10Vdc): (nu, tiM, FAn, AUS, ALr, Cnd) nu = not
used, regulator disabled; tiM = timed mode; FAn = linked to the evaporator fan
regulator; ALr = linked to any alarm condition; Cnd = linked to the condenser fan
regulator
3Ao Analogue output 3 (PWM): (nu; FrE; ALr) nu = not used, regulator disabled; FrE =
frequency output for variable speed compressors; ALr = linked to any alarm
condition
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 INPUT MENU - inP
i1P Digital input 1 polarity: (oP; CL) oP = the digital input is activated by opening the
contact; CL = the digitalinput is activated by closing the contact.
i1F Digital input 1 configuration: (EAL; bAL; PAL; dor; dEF; AUS; Htr; FAn; ES; HdF; LHt;
onF) 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; AUS = auxiliary relay activation
with oAx=AUS; Htr = type of inverting action (cooling or heating); FAn = evaporator fan
activation; ES = energy saving; HdF = Holiday defrost (enable only with RTC); onF = to
switch the controller off; LHt = to activate the light.
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.
i2P Digital input 2 polarity: (oP; CL) oP = the digital input is activated by opening the
contact; CL = the digitalinput is activated by closing the contact.
i2F Digital input 2 configuration: EAL; bAL; PAL; dor; dEF; AUS; Htr; FAn; ES; HdF; LHt;
onF) 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; AUS = auxiliary relay activation
with oAx=AUS; Htr = type of inverting action (cooling or heating); FAn = evaporator fan
activation; ES = energy saving; HdF = Holiday defrost (enable only with RTC); onF = to
switch the controller off; LHt = to activate the light.
d2d Digital input 2 alarm delay: (0 to 255 min) delay between the detection of the external
alarm condition and its signaling.
When i2F= PAL, it is the interval of time to calculate the number of pressure switch
activation.
nPS Number of pressure alarm events before stopping the regulation (Lock alarm): (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 and fan status after door opening: (no; FAn; CPr;F_C;) no = normal;
FAn = normal; CPr = compressor OFF, F_C = compressor OFF.
rrd Regulation restart after open door alarm: (n; Y) n= outputs follow the odC parameter.
Y= outputs restart with a door open alarm.
ENERGY SAVING MENU – ES
HES Differential for energy saving mode: (-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.
ESt Time-out for energy saving mode: (0 to 255 hours) maximum duration for energy
saving mode. If ESt=0 then this function is disabled.
LdE Energy saving mode controls the lights: (n; Y) lights off when energy saving mode is
active
REAL TIME CLOCK MENU - rtC
Hur Hour: 0 to 23h
Min Minute: 0 to 59min
dAY Day of the week: Sun to Sat
dYM Day of the month: 0 to 31
Mon Month: 1 to 12
YAr Year: 00 to 99
Hd1 First day of the weekend: (Sun to Sat; nu) set the first day of the week which
follows the holiday times.
Hd2 Second day of the weekend: (Sun to Sat; nu) set the second day of the week
which follows the holiday times.
iLE Working day energy saving starting time: (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 Working day Energy saving duration: (0 to 24h00min) sets the duration of the
Energy Saving cycle on workdays.
iSE Holyday energy saving starting time: 0 to 23h50min.
dSE Holyday energy saving duration: 0 to 24h00min.
dd1…dd6 Daily defrost enabled: (n; Y) to enable the Ld1…Ld6 defrost operations for any day
of the week.
Ld1…Ld6 Daily 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.
N.B.: To disable a defrost cycle set it to “nu”(not used). Ex: if Ld6=nu;the sixth defrost cycle will
be disabled.
OTHER
Adr Serial address: (1 to 247) identifies the instrument address when connected to a Modbus
compatible monitoring system.
onC On/Off key enabling: (nU; oFF; ES; SEr) nU = disabled; oFF = enabled; ES = energy
saving mode; SEr = do not use it
dP1 Probe P1 value visualization (read only)
dP2 Probe P2 value visualization (read only)
dP3 Probe P3 value visualization (read only)
dP4 Probe P4 value visualization (read only)
SPd Instantaneous compressor speed (in percentage): read only
rSE Real regulation set point: it shows the set point used during the energy saving cycle or
during the continuous cycle.
rEL Firmware release
Ptb Parameter map code
12 DIGITAL INPUT
The free voltage digitalinputs are programmable in different configurations bythe i1F or i2F
parameters.
12.1 DOOR SWITCH INPUT ( 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 is 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.
12.2 GENERIC ALARM ( 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.
12.3 SERIOUS ALARM MODE (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.
12.4 PRESSURE SWITCH (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.
12.5 START DEFROST (DEF)
It starts a defrost if there are the right conditions. After the defrost is finished, the normalregulation will
restart only if the digital input is disabled otherwise the instrument will wait until the MdF safety time is
expired.
12.6 KIND OF ACTION: HEATING OR COOLING (HTR)
This function allows inverting the regulation of the controller: from cooling to heating and vice versa.

15980xxxxx - XWi70K FULL GB R1.3 24.01.2017.docx XWi70K 7/8
12.7 ENERGY SAVING (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 thedigital input is activated.
12.8 EVAPORATOR FAN CONTROL (FAN)
Outputs set as evaporator fan (FAn) willbe activated or deactivated following the digital input polarity.
12.9 HOLIDAY MODE (HDF)
Holiday mode activation.
12.10 REMOTE LIGHT CONTROL (LHT)
To manage the light activation from remote.
12.11 REMOTE ON OFF (ONF)
To issue a remote ON/OFF command.
12.12 DIGITAL INPUTS POLARITY
The digital input polarity depends on the i1P or 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
13 INSTALLATION AND MOUNTING
T620 keyboard shall be mounted on vertical panel, in a 150x31 mm hole, and fixed using two screws
3 x 2mm. To obtain an IP65 protection grade use the front panel rubber gasket (mod. RG-L).
VX620 keyboard shall be mounted on vertical panel, in a 72x56 mm hole, and fixed using two screws
3 x 2mm. To obtain an IP65 protection grade use the front panel rubber gasket (mod. RGW-V).
CX/CH620 keyboard shall be mounted on vertical panel, in a 29x71 mm hole, and fixed using the
specialbracket supplied.
The controller XWi70K shall be mounted in a din rail.
It must be connected to the keyboard by means of a two-wire cable (1mm). 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.
13.1 XWi70K – 8 DIN CASE - DIMENSIONS
14 ELECTRICAL CONNECTIONS
XWi70K is provided with screw terminal blocks to connect cables with a cross section up to 2.5 mm2
for the RS485 (optional) and the keyboard. To connect the other inputs, power supply and relays,
XWi70K is provided with Plug-in connections (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.
NOTE: the maximum current allowed for all the loads is 16A.
14.1 PROBE CONNECTIONS
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.
15 TTL/RS485 SERIAL LINE
The TTL connector allows, by means of the external module TTL/RS485 (XJ485CX), to connect the
unit to a network line ModBUS-RTU compatible as the Dixell monitoring system. The same TTL
connector is used to upload and download the parameter list of the “HOT-KEY”.
16 HOW TO: USE OF THE PROGRAMMING “HOT KEY”
16.1 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.
16.2 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 willrestart 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.
17 ALARM SIGNALS
Message Cause Outputs
P1 Thermostat probe failure
Alarm output ON; Compressor output according to
parameters Con and CoF
P2 Second probe failure Alarm output ON; Other outputs unchanged
P3 Third probe failure Alarm output ON; Other outputs unchanged
P4 Fourth probe failure Alarm output ON; Other outputs unchanged
HA Maximum temperature alarm Alarm output ON; Other outputs unchanged
LA Minimum temperature alarm Alarm output ON; Other 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 Externalalarm Output unchanged
CA Serious external alarm (i1F=bAL) All outputs OFF
CA Pressure switch alarm (i1F=PAL) All outputs OFF
EE Data or memoryfailure Alarm output ON; Other outputs unchanged
noL No communication between base
and keyboard Unchanged
The alarm message is displayed untilthe alarm condition is recovery.
All the alarm messages are showed alternating with the room temperature except for the “P1” which is
flashing.
To reset the “EE” alarm and restart the normal functioning press any key, the “rSt” message is
displayed for about 3 sec.
17.1 BUZZER MUTING
Once the alarm signal is detected the buzzer can be silenced by pressing any key. Buzzer is mounted
in the keyboard and it is an option.
17.2 “EE” ALARM
The Dixell instruments are provided with an internal check for the data integrity. The “EE” alarm
flashes when a failure in the memory data occurs. In such cases the alarm output is enabled.
17.3 ALARM RECOVERY
Probe alarms: “P1” (probe1 faulty), “P2”, “P3” and “P4”; they automatically stop 10 sec after the probe
restarts normaloperation. Check connections before replacing the probe.
Temperature alarms “HA”, “LA” “HA2” and “LA2” automatically stop as soon as the temperature
returns to normalvalues.
Alarms “EA” and “CA” (with i1F=bAL)recovers as soonas the digital input is disabled.
Alarm “CA” (with i1F=PAL) recovers only by switching off and on the instrument.
18 Technical data
Keyboards
Housing: self-extinguishing ABS
Case: CX/CH620 dimension 32x74 mm; depth 23mm
Mounting: CX/CH620: panel mounting in a 29x71 mm hole, and fixed using the special bracket
Protection: IP20; Frontal protection: IP65 with frontalgasket
Connections: Screw terminal block 2.5 mm2
Power supply: from XWi70K power module
Display: 3 digits, red LED, 14.2 mm high
Optional output: buzzer
Power module XWi70K
Case: 8 DIN: 140x176x148
Connections: Screw terminal block 2.5 mm2heat-resistant wiring and 6.3mm Plug-in type
Power supply: 230Vac or. 110Vac 10% or 24Vac
Power absorption: 10VA max
Temperature probe inputs: 4 NTC or PTC probes
Digital inputs: 2 free voltage contacts
Relay outputs: Total current on loads MAX. 16A
Compressor/Valve: relay SPST 20(8) A, 250Vac
Fan: relay SPST 8(3) A, 250Vac
Defrost: relay SPST 20(8) A, 250Vac
Light: relay SPST 16(5) A, 250Vac
Alarm: relay SPDT 7(2) A, 250Vac
Serial output: TTL standard
Communication protocol: Modbus - RTU
Data storing: on the non-volatile memory (EEPROM)
Kind of action: 1B; Pollution degree: normal
Software class: A
Operating temperature: 0 to 60°C (32 to 140°F)
Storage temperature: -25 to 60°C (-13 to 140°F)
Relative humidity: 20 to85% (no condensing)
Measuring and regulation range:
NTC probe: -40 to 110°C (-58 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): ±0.5°C ±1digit

15980xxxxx - XWi70K FULL GB R1.3 24.01.2017.docx XWi70K 8/8
19 CONNECTIONS
19.1 XWi70K
20 Default setting values
TBD