dixell XW460L Wiring diagram

dIXEL
Installing and Operating Instructions 1592018230
1592018230 XW460L-V GB r1.0 04.07.2005.doc r 1.0 * XW460L/XW460V 1/4
XW460L/XW460V
DUAL TEMPERATURE CONTROLLER
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.
2. GENERAL DESCRIPTION
The XW460L/XW460V are instruments able to control 2 temperatures in an independent mode. The
first section is suitable for applications on refrigerating and ventilating units where temperatures used
are medium or low. This section is provided with three relay outputs: one for compressor, one for
defrost and another for evaporator fans. The second section is suitable for medium or low temperature
applications. This section is provided with one relay output for compressor control, the defrost process
is actuated with simple compressor stop. These instruments are provided with three configurable probe
inputs (NTC or PTC), first for control temperature of section 1, second to survey end defrost
temperature for section 1 and third for control temperature of section 2. There is also one configurable
digital input (free contact). All devices may be connected to monitoring system with serial output and
ModBUS-RTU communication protocol. All instruments are configurable with parameters simply
programmable from keyboard.
3. REGULATION
For both sections there are two kinds of actions available: management of cooling process or heating
process. Type of action is selected with cH1/cH2 parameter.
3.1 TYPE OF ACTION
CH1/2 parameters change action of the sections: cH1/cH2 = CL: refrigerating action (1/2); cH1/cH2 =
Ht: heating action (1/2)
3.2 CH1/CH2 = CL FOR COOLING ACTION
For each section, the regulation is
performed according to the temperature
measured by its own thermostat probe
with a positive differential from the set
point.
If the temperature increases and reaches
set point1 (2) plus differential1 (2)
compressor is started and then turned off
when the temperature reaches the set
point value again.
In case of fault in thermostat probe
compressor starts and stops via
“COn1(2)” and “COF1(2)” time.
3.3 CH1/CH2 = HT FOR HEATING ACTION
For each section, the regulation is performed
according to the temperature measured by its
own thermostat probe with a negative differential
from the set point. If temperature decreases and
reaches set point 1/2 minus differential 1/2 the
output is activated and then turned off when the
temperature reaches the set point value again
and then turned off when the temperature
reaches the set point value again.
NOTE: For turn-off defrost you can set
MdF1/MdF2 = 0.
4. DEFROST
4.1 SECTION 1
For the section 1 two defrost modes are available through the “tdF1” parameter: tdF1= rE defrost with
electrical heater; tdF1= in or hot gas.
The defrost interval is control by means of parameter “EdF”:
-rtc (only for instruments with RTC): beginning of defrost cycles is set by the L1d1÷L1d6
parameters during the working days and S1d1÷S1d6 during the holidays;
-in the defrost is made every “IdF” time;
-Sd the interval “IdF” is calculate through Smart Defrost algorithm (only when the comp. is ON)
At the end of defrost the drip time is controlled through the “Fdt” parameter.
4.2 SECTION 2
For the section 2 the defrost is realized with simply stop of compressor. Depending on “idF2”
parameter you may be configure interval between two defrosting cycles, while them during time is
controlled with “MdF2” parameter.
4.3 RELATION BETWEEN DEFROSTS
Different kinds of defrosts are available for each section. The relation between defrosts is set by the
dFS parameter: relation between defrosts.
Four relation between the 2 sections of the controller are available, to manage different kinds of
applications: in = independent defrosts; StS = same defrost start, synchronised defrost end; St = same
defrost start, independent defrost end; SE =sequential defrost.
4.3.1 dFS= in - independent defrosts
The defrosts of the 2 sections of controller are completely independent. First section: defrost interval is
set by idF1 parameter. Second section: defrost interval is set by idF2 parameter.
The defrost interval is control by means of parameter “EdF1(2)”:
-in the defrost is made every “idF” time
-Sd the interval “idF” is calculate through Smart Defrost algorithm (only when the comp. is ON)
Manual defrost activation, by pushing the DOWN key (defrost 1) or UP key (defrost 2).
By pushing the Down key or Up key for 3s, a defrost request is generated for section 1 or 2
respectively. The defrost interval is re-loaded.
4.3.2 dFS = StS – Same defrost start, end defrost synchronised or dFS = St - Same
defrost start, end defrost independent.
The defrost of the 2 sections of controller starts at the same time. idF1 parameter sets the defrost
interval for both the sections. The defrosts are performed at regular interval if EdF1 = in or according to
the Smartdefrost algorithm if EdF1 = Sd.
With dFS = StS regulation restarts only when defrost is finished for both the sections. The section that
finishes the defrost before the other starts dripping time until also the other section has not finished its
defrost.
Manual defrost activation, by pushing the DOWN key (defrost 1) or UP key (defrost 2).
By pushing the Down key or Up key for 3s, a defrost request is generated for both the sections 1 and 2.
The defrost interval is re-loaded.
With dFS = St each section restarts regulation as soon as its defrost is finished.
4.3.3 dFS = SE – sequential defrost
The defrost of 2 sections is synchronised. idF1 parameter sets the defrost interval for both the sections.
Defrosts are performed at regular interval if EdF1 = in or according to the Smartdefrost algorithm if
EdF1 = Sd. Section 1 does its defrost first, at the end of the defrost of section 1, section 2 starts its
defrost.
Manual defrost activation, by pushing the DOWN key (defrost 1) or UP key (defrost 2).
By pushing the Down key or Up key for 3s, a defrost request is generated for both the sections 1 and 2.
The defrost interval is re-loaded.
5. CONTROL OF EVAPORATOR FANS (ONLY FOR SECTION 1)
Section 1 has 1 relay to control evaporator fan.
The fan control mode is selected by means of the “FnC1” parameter: FnC1 = C-n fans will switch ON
and OFF with the compressor and not run during defrost; FnC1 = O-n fans will run continuously, but
not during defrost; FnC1 = C-y fans will switch ON and OFF with the compressor and run during
defrost; FnC1 = O-y fans will run continuously also during defrost. After defrost, the fans is turned-on
only if Fnd1 time is ended. An additional parameter “FSt1” provides the setting of temperature, detected
by the evaporator probe, above which the fans are always OFF. This can be used to make sure
circulation of air only if his temperature is lower than set in “FSt1”.
6. THE DISPLAY
XW460L
XW 4 0 0
2
1
2
1
2
1
2
1
2
2
2
1
1
1
1
21
2
XW460V
2 1
2
2
1
1
1
2
1 2
2
1
2
1
2
1
2
1
1
light activation/deactivation
2
Button not enabled
1
Section 1 Stand-By button
2
Section 2 Stand-By button
KEY COMBINATIONS
o+ n To lock and unlock the keyboard.
SET1 + nTo enter the programming mode.
SET1 + oTo exit the programming mode
SET1/2 To display and modify target set point 1/2,in programming mode it selects a parameter or
confirm an operation
n/ (DOWN/DEFROST 1) in programming mode it browses the parameter
codes or decreases the displayed value. By holding it pressed for 3s the
defrost for section 1 is started.
o/ (UP/DEFROST 2) in programming mode it browses the parameter codes
or increases the displayed value. By holding it pressed for 3s the defrost
for section 2 is started.
6.1 MEANING OF THE ICONS
Icon FUNCTION Meaning
ON Celsius degree

dIXEL
Installing and Operating Instructions 1592018230
1592018230 XW460L-V GB r1.0 04.07.2005.doc r 1.0 * XW460L/XW460V 2/4
ON Fahrenheit degree
ON Compressor 1 on
FLASHING Anti-short cycle delay enabled for compressor 1
ON Compressor 2 on
FLASHING Anti-short cycle delay enabled for compressor 2
ON Defrost 1 in progress
FLASHING Drip time in progress for section 1
ON Defrost 2 in progress
ON Fan enabled
FLASHING Drip time in progress
ON ALARM signal
6.2 HOW TO SEE AND MODIFY THE SET-POINT
1. Push and release the SET1 or SET2 key: the bottom display shows the label Set1 or Set2 and
the upper display shows the Set point value flashing;
2. To change the Set value push the o or nwithin 15s;
3. To memorise the new set point value push the SET1 or SET2 key again or wait 15s.
6.3 HOW TO START A MANUAL DEFROST FOR THE SECTION 1 OR SECTION 2
To start a defrost for the section 1: push the DOWN key( ) for 3s.
To start a defrost for the section 2: push the UP key( ) for 3s.
6.4 HOW TO ENTER THE “PR1” PARAMETER LIST
To change the parameter’s value operate as follows:
1. Enter the Programming mode by pressing the Set1 and DOWN key for 3s
2. The controller will show the first parameter present in the Pr1 menu:
-Bottom menu: label
-Upper menu: value
To exit: Press SET + UP or wait 15s without pressing a key.
6.5 HOW TO ENTER IN PARAMETERS LIST “PR2”
To access parameters in “Pr2”:
1. Enter the “Pr1” level.
2. Select “Pr2” – “PAS” parameter and press the “SET1” key.
3. The flashing value “0 - - ” is displayed. use oor nto input the security code and confirm the
figure by pressing “SET” key.
The security code is “321”.
4. If the security code is correct the access to “Pr2” is enabled by pressing “SET1” on the last digit.
Another possibility is the following: After switching ON the instrument, within 30
seconds, push SET1 + nkeys together for 3s: the Pr2 menu will be entered.
6.6 HOW TO MOVE A PARAMETER FROM THE “PR2” MENU TO “PR1” AND VICE VERSA.
Each parameter present in “Pr2” MENU can be removed or put into “Pr1”, user level, by pressing
“SET1 + n”.
In “Pr2” when a parameter is present in “Pr1” the decimal point LE of the bottom display is on.
6.7 HOW TO CHANGE A PARAMETER
To change a parameter value operates as follows:
1. Enter the Programming mode
2. Select the required parameter.
3. Press the “SET1” key and the value starts blinking.
4. Use “UP” or “DOWN” to change its value.
5. Press “SET1” to store the new value and move to the following parameter.
TO EXIT: Press SET1 + oor wait 15s without pressing a key.
NOTE: the set value is stored even when the procedure is exited by waiting the time-out to expire.
6.8 HOW TO LOCK THE KEYBOARD
1. Keep pressed for more than 3 s the o and nkeys.
2. The “POF” message will be displayed and the keyboard will be
locked. At this point it will be possible only to see the set points.
3. If a key is pressed more than 3s the “POF” message will be
displayed.
6.9 TO UNLOCK THE KEYBOARD
Keep pressed together for more than 3s the o and nkeys, till the “Pon” message will be displayed.
6.10 ON/OFF FUNCTION – HOW TO SWITCH ON AND OFF THE CONTROLLER
The Stand-By function is directly enabled if you press and release the
1
or
2
button (Stand-By
section 1 or 2). The regulation actions in Stand-By state are disabled while light button
1
active. In
this state all monitoring activities are excluded and never alarms are signalled.
NOTE: With the instrument in stand-by, it’s possible to see and modify the set points and enter
the programming mode.
7. PARAMETER LIST
DIFFERENTIALS
Hy1 Differential1: (0,1÷25,5°C; 1÷45°F): Intervention differential for set point1, always positive.
Compressor1 Cut IN is Set Point Plus Differential1 (Hy1). Compressor1 Cut OUT is when the
temperature reaches the set point1.
Hy2 Differential2: (0,1÷25,5°C; 1÷45°F): Intervention differential for set point2, always positive.
Compressor2 Cut IN is Set Point2 Plus Differential2 (Hy2). Compressor2 Cut OUT is when the
temperature reaches the set point2.
REGULATION – SECTION 1
LS1 Minimum set point1 limit: (-50,0°C÷SET1; -58°F÷SET1) Sets the minimum acceptable value
for the set point1.
US1 Maximum set point1 limit: (SET1÷150°C; SET1÷302°F) Set the maximum acceptable value
for set point1.
odS1 Outputs activation delay of section 1 at start up: (0÷255 min) This function is enabled at the
initial start up of the instrument and inhibits any output activation of the section 1 for the period
of time set in the parameter. (Light can work)
Ac1 Anti-short cycle delay for compressor1: (0÷30 min) interval between the compressor1 stop
and the following restart.
con1 Compressor1 ON time with faulty probe1: (0÷255 min) time during which the compressor1
is active in case of faulty thermostat probe. With con=0 compressor1 is always OFF.
coF1 Compressor1 OFF time with faulty probe1: (0÷255 min) time during which the compressor is
off in case of faulty thermostat probe. With coF=0 compressor is always active.
CH1 Kind of action for section 1: CL = cooling; Ht = heating
REGULATION – SECTION 2
LS2 Minimum set point2 limit: (-50,0°C÷SET2; -58°F÷SET2) Sets the minimum acceptable value
for the set point2.
US2 Maximum set point2 limit: (SET2÷150°C; SET2÷302°F) Set the maximum acceptable value
for set point2.
odS2 Outputs activation delay of section 2 at start up: (0÷255 min) This function is enabled at the
initial start up of the instrument and inhibits any output activation of the section 1 for the period
of time set in the parameter.
Ac2 Anti-short cycle delay for compressor2: (0÷30 min) interval between the compressor2 stop
and the following restart.
con2 Compressor2 ON time with faulty probe2: (0÷255 min) time during which the compressor2
is active in case of faulty thermostat probe. With COn=0 compressor2 is always OFF.
coF2 Compressor2 OFF time with faulty probe2: (0÷255 min) time during which the compressor is
off in case of faulty thermostat probe. With COF=0 compressor2 is always active.
cH2 Kind of action for section 2: CL = cooling; Ht = heating
DISPLAY
cF Temperature measurement unit: °C = Celsius; °F = Fahrenheit. When the measurement unit
is changed the SET point and the values of some parameters have to be modified.
rES Resolution (for °C): (in = 1°C; de = 0,1°C) allows decimal point display. dE = 0,1°C; in = 1 °C
Lod1 Bottom display visualization: select which probe is displayed by the instrument in the bottom
display: P1 = Thermostat1 probe; P2 = Evaporator probe; P3 = Thermostat2 probe
Lod2 Upper display visualization: select which probe is displayed by the instrument in the upper
display: P1 = Thermostat1 probe; P2 = Evaporator probe; P3 = Thermostat2 probe
DEFROST
dFS relation between defrosts: four relation between the 2 sections of the controller are available,
to manage different kinds of applications: ind = independent defrosts; StS = same defrost start,
synchronised defrost end; St = same defrost start, independent defrost end; SE =sequential
defrost;
tdF1 Defrost type, section 1: rE = electrical heater (Compressor OFF); in = hot gas (Compressor
and defrost relays ON)
EdF1 Defrost mode, section 1: in = interval mode. The defrost starts when the time “Idf” is
expired.
SdF1 Set point for SMARTDEFROST, section 1: (-30÷30 °C/ -22÷86 °F) evaporator temperature
which allows the IdF counting (interval between defrosts) in SMARTFROST mode.
dtE1 Defrost termination temperature, section 1: (-50,0÷110,0°C; -58÷230°F) (Enabled only
when the evaporator probe is present) sets the temperature measured by the evaporator probe
which causes the end of defrost.
idF1 Interval between defrosts, section 1: (1÷120h) Determines the time interval between the
beginning of two defrost cycles.
MdF1 Maximum duration of defrost, section 1: (0÷255 min) When P2P = no, no evaporator probe,
it sets the defrost duration, when P2P = yES, defrost end based on temperature, it sets the
maximum length for defrost.
tPF1 Time before defrost, section 1: (0÷30 min) time before starting next defrost.
Fdt1 Drain down time, section 1: (0÷60 min.) time interval between reaching defrost termination
temperature and the restoring of the control’s normal operation. This time allows the evaporator
to eliminate water drops that might have formed due to defrost.
dPo1 Defrost at power on section 1: y = Immediately; n= after the idF time;
EdF2 Defrost mode, section 2: in = interval mode. The defrost starts when the time “IdF” is
expired.
idF2 Interval between defrosts, section 2: (1÷120h) Determines the time interval between the
beginning of two defrost cycles.
MdF2 Maximum duration of defrost, section 2: (0÷255 min) it sets the defrost duration.
dFd Display during defrost: rt = real temperature; it = temperature reading at the defrost start;
dAd Defrost display time out: (0÷255 min) Sets the maximum time between the end of defrost and
the restarting of the real room temperature display.
dSd Start defrost delay : ( 0÷99min) This is useful when different defrost start times are necessary
to avoid overloading the plant.
FANS
FnC1 Fan operating mode, section 1: C-n = running with the compressor1, OFF during the defrost;
C-y = running with the compressor1, ON during the defrost; O-n = continuous mode, OFF
during the defrost; O-y = continuous mode, ON during the defrost;
Fnd1 Fan delay after defrost, section 1: (0÷255 min) The time interval between the defrost end
and evaporator fans start.
FSt1 Fan stop temperature, section 1: (-50÷110°C; -58÷230°F) setting of temperature, detected
by evaporator probe, above which the fan is always OFF.
FAP1 Probe selection for fans management, section 1: nP = no probe: fan follows the setting of
FnC1 parameter; P1 = thermostat 1 probe; P2 = evaporator probe; P3 = thermostat 2 probe;
ALARMS
ALc1 Temperature alarms configuration, section 1: it determines if alarms are relative to set point
1 or referred to absolute values: rE relative to set point; Ab absolute temperature.
ALu1 Maximum alarm, section 1: With ALc1=rE: alarm relative to set point1, (0÷50°C) Maximum
alarm is enabled when the probe values exceeds the “SET1+ALU” value. With ALc1=Ab:
absolute alarm, (Set1÷Full Sc.) Maximum alarm is enabled when the probe values exceeds the
“ALU” value
ALL1 Minimum alarm, section 1: with ALc1=rE: relative to set point1, (0÷50°C) this value is
subtracted from the set point1. The alarm signal is enabled when the probe values goes below
the “SET1-ALL” value. With ALc1=Ab absolute value, minimum alarm is enabled when the
probe values goes below the “ALL1” value..
ALd1 Temperature alarm delay, section 1: (0÷255 min) time interval between the detection of an
alarm condition and the corresponding alarm signalling.

dIXEL
Installing and Operating Instructions 1592018230
1592018230 XW460L-V GB r1.0 04.07.2005.doc r 1.0 * XW460L/XW460V 3/4
dAo1 Delay of temperature alarm at start-up, section 1: (0min÷23h 50min) time interval between
the detection of the temperature alarm condition in section after the instrument power on and
the alarm signalling.
ALc2 Temperature alarms configuration, section 2: it determines if alarms are relative to set point
2 or referred to absolute values: rE relative to set point; Ab absolute temperature.
ALu2 Maximum alarm, section 2: with ALc2=rE: alarm relative to set point1, (0÷50°C) Maximum
alarm is enabled when the probe values exceeds the “SET2+ALU” value. with ALc2=Ab:
absolute alarm, (Set2÷Full Sc.) Maximum alarm is enabled when the probe values exceeds the
“ALu” value.
ALL2 Minimum alarm, section 2: With ALc2=rE: relative to set point1, (0÷50°C) this value is
subtracted from the set point2. The alarm signal is enabled when the probe values goes below
the “SET2-ALL” value. With ALc2=Ab absolute value, minimum alarm is enabled when the
probe values goes below the “ALL2” value.
ALd2 Temperature alarm delay, section 2: (0÷255 min) time interval between the detection of an
alarm condition and the corresponding alarm signalling.
dAo2 Delay of temperature alarm at start-up, section 2: (0min÷23h 50min) time interval between
the detection of the temperature alarm condition in section after the instrument power on and
the alarm signalling.
AFH Temperature alarm and fan differential: (0,1÷25,5°C; 1÷45°F) Intervention differential for
temperature alarm set point and fan regulation set point, always positive.
EdA Alarm delay at the end of defrost: (0÷255 min) Time interval between the detection of the
temperature alarm condition at the end of defrost and the alarm signalling.
dot Delay of temperature alarm after closing the door : (0÷255 min) Time delay to signal the
temperature alarm condition after closing the door.
doA Open door alarm delay:(0÷255 min) delay between the detection of the open door condition
and its alarm signalling: the flashing message “dA” is displayed.
PROBE INPUTS
Pbc Kind of probe: Ptc = PTC; ntc = NTC
oFS1 Thermostat1 probe calibration: (-12.0÷12.0°C/ -21÷21°F) allows to adjust possible offset of
the thermostat1 probe.
oFS2 Thermostat2 probe calibration: (-12.0÷12.0°C/ -21÷21°F) allows to adjust possible offset of
the thermostat2 probe.
oFS3 Evaporator probe calibration: (-12.0÷12.0°C/ -21÷21°F) allows to adjust possible offsets of
the evaporator probe.
P2P Thermostat2 probe presence: no= not present; yES= present.
P3P Evaporator probe presence: no= not present: the defrost stops only by time; yES= present:
the defrost stops by temperature and time.
DIGITAL INPUTS
i2P Digital input polarity: cL : the digital input is activated by closing the contact; OP : the digital
input is activated by opening the contact.
i2F Digital input operating mode: configure the digital input function: MP1 = door switch 1; MP2 =
door switch 2, MP: door switch (it’s used by both the sections); EA1 = generic alarm section 1;
EA2 = generic alarm section 2; EAL = generic alarm (it’s used by both the sections); bA1 =
serious alarm mode section 1; bA2 = serious alarm mode section 2; , bAL = serious alarm
mode section (it’s used by both the sections); dF1 = Start defrost, section 1; dF2 = Start
defrost, section 2; dEF = Start defrost (it’s used by both the sections); oF1 = remote on/ off,
section1; oF2 = remote on/ off, section 2; oFF = = remote on/ off (it’s used by both the
sections); ES = Energy Saving
odc1 Compressor and fan status when open door, section 1: no = normal; Fan = Fan OFF; CPr
= Compressor OFF; F_C = Compressor and fan OFF.
rrd1 Outputs restart after door open alarm, section 1: n = status of outputs according to odc1;
Y= outputs restart working.
did1 Time interval delay for digital input alarm, section 1:(0÷255 min.) With i1F or i2F = EAL1 or
bAL1 (external alarms), “did” parameter defines the time delay between the detection and the
successive signalling of the alarm.
odc2 Compressor status when open door, section 2: no ,Fan = normal;; CPr, F_C = Compressor
OFF.
rrd2 Outputs restart after door open alarm, section 2: n = status of outputs according to odc2;
Y= outputs restart working.
did2 Time interval delay for digital input alarm, section 2:(0÷255 min.) With i1F or i2F = EAL1 or
bAL1 (external alarms), “did” parameter defines the time delay between the detection and the
successive signalling of the alarm.
OTHER
HES1 Temperature increase during the Energy Saving cycle, section 1: (-30÷30°C / -54÷54°F)
sets the increasing value of the set point1 during the Energy Saving cycle.
HES2 Temperature increase during the Energy Saving cycle, section 2: (-30÷30°C / -54÷54°F)
sets the increasing value of the set point2 during the Energy Saving cycle.
Adr1/2 RS485 serial address, section 1/2 (1÷247): Identifies section 1/2 address when connected to
a ModBUS compatible monitoring system.
dP1 First probe display; dP2 Second probe display; dP3 Third probe display;
rEL Release software: (read only) Software version of the microprocessor.
Ptb Parameter table: (read only) it shows the original code of the dIXEL parameter map.
Pr2 Access to the protected parameter list (read only).
8. DIGITAL INPUT
The instrument can support up to 2 free contact digital inputs. Both of them can be configured as One is
always configured as door switch, the second is programmable in seven different configurations by the
“I2F” parameter.
8.1 DOOR SWITCH INPUT (MP1, MP2, MP)
It signals the door status to the controller: MP1: door open for section 1; MP2: door open for section
2; MP door open for both the sections.
When the door is open the status of compressor (and fans) depends on the “odc1” and
“odc2”parameters: no = normal (no changes); Fan = Fan OFF (if fan is present); CPr = Compressor
OFF; F_C = Compressor and fan OFF. Since the door is opened, after the delay time set through
parameter “doA”, the alarm output is enabled and the display shows the message “dA”. The alarm
stops as soon as the external digital input is disabled again. During this time and then for the delay
“dot” after closing the door, the high and low temperature alarms are disabled.
8.2 CONFIGURABLE INPUT - GENERIC ALARM (EA1, EA2, EAL)
It signals to the controller: EA1: generic alarm – section 1; EA2: generic alarm – section 2; EAL:
generic alarm – it counts for both the sections. As soon as the digital input is activated the unit will wait
for “did1” time for section 1 and “did2” time for section 2 delay before signalling the “EAL” alarm
message. The outputs status don’t change. The alarm stops just after the digital input is de-activated.
8.3 CONFIGURABLE INPUT - SERIOUS ALARM MODE (BA1, BA2, BAL)
It signals to the controller: bA1: serious alarm – section 1; bA2: serious alarm – section 2; bAL: serious
alarm – it counts for both the sections. As soon as the digital input is activated the unit will wait for
“did1” time for section 1 and “did2” time for section 2 delay before signalling the “bAL” alarm message.
The relay outputs are switched OFF. The alarm will stop as soon as the digital input is de-activated.
8.4 CONFIGURABLE INPUT - START DEFROST (DF1, DF2, DEF)
It executes a defrost if there are the right conditions, respectively for: dF1: section 1; dF2: section 2;
dEF: both the sections. After the defrost is finished, the normal regulation will restart only if the digital
input is disabled otherwise the instrument will wait until the “Mdf1” and “MdF2” safety time is expired.
8.5 CONFIGURABLE INPUT - REMOTE ON/OFF (OF1, OF2, ONF)
This function allows to switch ON and OFF a sections of the instrument or the whole instrument
according to the following setting: oF1: section 1; oF2: section 2; onF: it counts for both the sections.
When the digital input is de-activated, the corresponding section restarts working.
8.6 CONFIGURABLE INPUT - ENERGY SAVING (i2F=ES)
The Energy Saving function allows to change the set point value as the result of the SET1+HES1 for
section and SET2 + HES2 fro section 2. This function is enabled until the digital input is activated.
8.7 DIGITAL INPUTS POLARITY
The digital inputs polarity depends on “I1P” and “I2P” parameters. CL : the digital input is activated by
closing the contact. OP : the digital input is activated by opening the contact
9. ELECTRICAL CONNECTIONS
The instrument are provided with screw terminal block to connect cables with a cross section up to 2,5
mm2. 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.
9.1 PROBE CONNECTION
The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid infiltration.
It is recommended to place probe away from air streams to correctly measure the average room
temperature.
10. SERIAL LINE
The optional RS485 output allows the unit to connect to a network line ModBUS-RTU compatible as the
dIXEL monitoring system.
11. USE OF THE PROGRAMMING “HOT KEY “
The unit can UPLOAD or DOWNLOAD the parameter list from its own E2 internal memory to the “Hot
Key” and vice-versa.
11.1 DOWNLOAD FROM THE “HOT KEY” TO THE INSTRUMENT)
1. Turn OFF the instrument, insert the “Hot Key” and then turn the instrument ON.
2. Automatically the parameter list of the “Hot Key” is downloaded into the memory, the “doL”
message is blinking. After 10 seconds the instrument will restart working with the new
parameters.
3. Turn OFF the instrument remove the “Hot Key”, plug in the TTL serial cable, then turn it ON
again.
At the end of the data transfer phase the instrument displays the following messages: “end “ for right
programming. The instrument starts regularly with the new programming. “err” 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.
11.2 UPLOAD (FROM THE INSTRUMENT TO THE “HOT KEY”)
1. When the unit is ON, insert the “Hot key” and push èkey; the "uPL" message appears.
2. Push “SET” key to start the UPLOAD; the “uPL” message is blinking.
3. Turn OFF the instrument remove the “Hot Key”, plug in the TTL serial cable, then turn it ON
again.
At the end of the data transfer phase the instrument displays the following messages: “end “ for right
programming. “err” for failed programming. In this case push “SET” key if you want to restart the
programming again or remove the not programmed “Hot key”.
12. ALARM SIGNALS
Message Cause Outputs
“P1” Thermostat1 probe failure Alarm output ON; Compressor1 output according to
parameters “COn1” and “COF1”
“P2” Thermostat2 probe failure Alarm output ON; Compressor2 output according to
parameters “COn1” and “COF2”
“P3” Evaporator probe failure Alarm output ON; Other outputs unchanged
“HA” High temperature alarm Outputs unchanged
“LA” Low temperature alarm Outputs unchanged
“EE” Some memory problems Alarm output ON; Other outputs OFF
“dA” Door switch alarm Outputs unchanged
“EAL” External alarm Outputs unchanged
“bAL” Serious external alarm Regulation outputs deactivated
“POF” Keyboard locked Outputs unchanged
“POn” Keyboard unlocked Outputs unchanged
The alarm message is displayed until the 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 3s.
12.1 SILENCING BUZZER
Once the alarm signal is detected the buzzer can be silenced by pressing any key.
12.2 “EE” ALARM
The dIXEL instruments are provided with an internal check for the data integrity. Alarm “EE” flashes
when a failure in the memory data occurs. In such cases the alarm output is enabled.

dIXEL
Installing and Operating Instructions 1592018230
1592018230 XW460L-V GB r1.0 04.07.2005.doc r 1.0 * XW460L/XW460V 4/4
12.3 ALARM RECOVERY
Probe alarms : “P1” (probe1 faulty), “P2” and “P3”; they automatically stop 10s after the probe restarts
normal operation. Check connections before replacing the probe. Door switch alarm “dA” stop as soon
as the door is closed. External alarms “EAL”, “bAL” stop as soon as the external digital input is
disabled. The alarm message is displayed until the alarm condition is recovery. All the alarm messages
are showed alternating with the room temperature except for the “P1” which is flashing.
13. INSTALLATION AND MOUNTING
Instruments XW460L 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).
Instruments XW460V shall be mounted on vertical panel, in a 72x56 mm hole, and fixed using screws
∅3 x 2mm. To obtain an IP65 protection grade use the front panel rubber gasket (mod. RGW-V).
To obtain an IP65 protection grade use the front panel rubber gasket (mod. RG-L). The temperature
range allowed for correct operation is 0 - 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.
XW460L CUT OUT XW460V CUT OUT
165
150
31
+0.5
-0
+0.5
-0
+1
-1
Ø3 x2
56
72
40
83,5
14. TECHNICAL DATA
Housing: self extinguishing ABS.
Case: XW460L: facia 38x185 mm; depth 76mm; XW460V: facia 100x64 mm; depth 76mm
Mounting XW460L: panel mounting in a 150x31 mm panel cut-out with two screws. ∅3 x 2mm.
Distance between the holes 165mm
XW460V: panel mounting in a 56x72 mm panel cut-out with two screws. ∅3x2mm.
Distance between the holes 40mm
Protection: IP20. Frontal protection: IP65 with optional frontal gasket mod RG-L (XW460L); RGW-V
(XW460V). Connections: Screw terminal block ≤2,5 mm2heat-resistant wiring and 6,3mm Faston
Power supply: 24Vac ±10% or 110Vac ±10% or 230Vac ±10%; Power absorption: 10VA max.
Display: 3 digits, red LED, 14,2 mm high.
Inputs: 2 NTC or PTC probe; Digital input: 1 free voltage
Relay outputs:
Compressor 1: XW460L relay SPST 20(8) A, 250Vac; XW460V relay SPST 8(3) A, 250Vac;
Compressor 2: relay SPDT 8(3) A, 250Vac; defrost: relay SPDT 8(3) A,250Vac;
Fans: relay SPDT 8(3)A, 250Vac; light1: relay SPST 8(3) A, 250Vac;
light2: relay SPST 8(3) A, 250Vac;
Other output : buzzer for alarm signalling Data storing: on the non-volatile memory (EEPROM).
Kind of action: 1B. Pollution grade: normal. Software class: A.
Operating temperature: 0÷60 °C. Storage temperature: -30÷85 °C(22÷185°F)
Relative humidity: 20÷85% (no condensing).
Measuring and regulation range: PTC probe: -50÷150°C (-58÷302°F); NTC probe: -40÷110°C (-
58÷230°F); Resolution: 0,1 °C or 1 °F (selectable). Accuracy (amb. temp. 25°C): ±0,5 °C ±1 digit
15. WIRING CONNECTIONS
XW460L
Room 1
11
910 1 2 13 1716 18 19 21 22 23
14 15
HOT KEY
Supp ly
230V~
LN
Co m p2
20(8) A
250V~
62738451
Fan
8( 3) A
250V~8(3)A 250V~8( 3 ) A 250V~8( 3 ) A 250V~
Dig.
Inpu t
8( 3 ) A
250V~
Def
NC
Lig ht2 Lig ht1 Comp1
Def .
Room 2
24/110Vac Power Supply: connect to 14-15 terminals
XW460V
L
N
8(3)A25 0V~
MA X
20A
2123 2022 18 17 16 14 13
12 11 10 9 8765 432
Su pp ly
230V~
Comp1
Def
N.C.
De f .
HO T KE Y
Dig. Input
8(3 ) A 8(3 ) A 8(3 ) A 8(3 ) A 8(3 ) A
C
Comp2
Light1
Li g ht 2
Room2
Room1
Fan
24/110Vac Power Supply: connect to 2-3 terminals
16. DEFAULT SETTING VALUES
Label Nome Range Default level
REGULATION
Set1 Set point 1 LS1÷US1 -5.0 - - -
Set2 Set point 2 LS2÷US2 3.0 - - -
Hy1 Differential 1 0,1÷25,5 °C / 1÷45°F 2.0 Pr1
Hy2 Differential 2 0,1÷25,5 °C / 1÷45°F 2.0 Pr1
REGULATION – SECTION 1
LS1 Minimum set point1 limit -50,0°C÷SET1 / -58°F÷SET1 -50.0 Pr2
US1 Maximum set point1 limit SET1 ÷ 150°C / SET1 ÷ 302°F 110 Pr2
odS1 Outputs activation delay of sect. 1 at start up 0÷255 min. 0 Pr2
Ac1 Anti-short cycle delay for compressor1 0÷30 min. 1 Pr1
con1 Compressor1 ON time with faulty probe1 0÷255 min. 15 Pr2
coF1 Compressor1 OFF time with faulty probe1 0÷255 min. 15 Pr2
cH1 Kind of action for section 1 cL / Ht cL Pr2
REGULATION – SECTION 2
LS2 Minimum set point 2 limit -50,0°C÷SET2 / -58°F÷SET2 -50.0 Pr2
US2 Maximum set point 2 limit SET2 ÷ 150°C / SET2 ÷ 302°F 110 Pr2
Label Nome Range Default level
odS2 Outputs activation delay of sect. 2 at start up 0÷255 min. 0 Pr2
Ac2 Anti-short cycle delay for compressor2 0÷30 min. 1 Pr1
con2 Compressor2 ON time with faulty probe2 0÷255 min. 15 Pr2
coF2 Compressor2 OFF time with faulty probe2 0÷255 min. 15 Pr2
cH2 Kind of action for section 2 cL / Ht cL Pr2
DISPLAY
cF Temperature measurement unit °C / °F °C Pr2
rES Resolution (for °C in ÷ de dE Pr1
Lod1 Bottom display visualization P1 ÷ P4 P1 Pr2
Lod2 Upper display visualization P1 ÷ P4 P3 Pr2
DEFROST
dFS Relation between defrosts ind; StS; Sti, SE ind Pr2
tdF1 Kind of defrost section 1 rE, in rE Pr2
EdF1 Defrost mode, section 1 In, Sd,RTC In Pr2
SdF1 Set point for Smart Defrost section 1 -30 ÷ +30°C / -22÷+86°F 0 Pr2
dtE1 End defrost temperature -50.0 ÷ 150.0 °C / -58 ÷ 302 °F 6.0 Pr2
idF1 Interval between defrosts, section 1 1÷120ore 6 Pr1
MdF1 Maximum duration of defrost, section 1 0÷255 min. 20 Pr1
tPF1 Time before defrost 0 ÷ 30 min. 0 Pr2
Fdt1 Dripping time section 1. 1 0÷60 min. 0 Pr2
dPo1 Defrost at power on section . 1 n ÷ y n Pr2
EdF2 Defrost mode, section 2: In, Sd, RTC in Pr2
idF2 Interval between defrosts, section 2 1÷120ore 8 Pr1
MdF2 (Maximum) duration of defrost, section 2 0÷255 min. 20 Pr1
dFd Display during defrost rt, it, SEt, dEF, dEG it Pr2
dAd Defrost display time out 0÷255 min. 20 Pr2
dSd Defrost delay 0÷255 min. 0 Pr2
FANS
FnC1 Fans operating mode, section 1 C-n, C-y, O-n, O-y O-n Pr2
Fnd1 Fans delay after defrost, section 1 0÷255 min. 10 Pr2
FSt1 Fans stop temperature, section 1 -50,0÷110°C/ -58÷230°F 2.0 Pr2
FAP1 Probe for fans P1÷P3 P2 Pr2
ALARM
ALc1 Temperature alarms configuration, section 1 rE / Ab Ab Pr2
ALu1 Maximum alarm, section 1 -50,0÷150°C/ -58÷302°F 110 Pr1
ALL1 Minimum alarm, section 1 -50,0÷150°C/ -58÷302°F -50.0 Pr1
ALd1 Temperature alarm delay, section 1 0÷255 min. 15 Pr2
dAo1 Delay of temp. alarm at start-up, section 1 0 ÷ 23h 50 min. 1.3 Pr2
ALc2 Temp. alarms configuration, section 2 re ÷ Ab Ab Pr2
ALu2 Maximum alarm, section 2 -50,0÷150°C/ -58÷302°F 110 Pr1
ALL2 Minimum alarm, section 2 -50,0÷150°C/ -58÷302°F -50.0 Pr1
ALd2 Temperature alarm delay, section 2 0÷255 min. 15 Pr2
dAo2 Delay of temp. alarm at start-up, section 2 0 ÷ 23h 50 min. 1.3 Pr2
AFH Temperature alarm and fan differential 0,1÷25,5 °C / 1÷45°F 1.0 Pr2
EdA Alarm delay at the end of defrost 0÷255 min. 20 Pr2
dot Delay of temp. alarm after closing the door 0÷255 min. 20 Pr2
doA Open door alarm delay 0÷254 min., nu 15 Pr2
Pbc Kind of probe PTC/ntc ntc Pr2
ANALOG INPUTS
oFS1 Thermostat1 probe calibration -12,0÷12,0°C / -21÷21°F 0.0 Pr2
oFS2 Thermostat2 probe calibration -12,0÷12,0°C / -21÷21°F 0.0 Pr2
oFS3 Evaporator probe calibration -12,0÷12,0°C / -21÷21°F 0.0 Pr2
P2P Thermostat2 probe presence n / y Y Pr2
P3P Evaporator probe presence n / y Y Pr2
DIGITAL INPUTS
i2P Digital input 2 polarity cL÷OP cL Pr2
i2F Digital input 2 operating mode
MP1; MP2, MP; EA1; EA2;
EAL; bA1; bA2; , bAL; dF1; dF2;
dEF; oF1; oF2; oFF; ES
EAL Pr2
Odc1 Comp. and fan status when open door, sect
1 no, Fan, CPr, F_C no Pr2
rrd1 Outputs restart after door open alarm, sect. 1 n, y y Pr2
did1 Time interval delay for digital input alarm,
sect. 1 0÷255 min. 5 Pr2
odc2 Comp. status when open door, section 2: no, Fan, CPr, F_C 0 Pr2
rrd2 Outputs restart after door open alarm, sect. 2 n, y y Pr2
did2 Time interval delay for digital input alarm,
sect. 2 0÷255 min. 5 Pr2
OTHER
HES1 Temp. increase during the Energy Saving
cycle, sect. 1 -30÷30°C / -54÷54°F 0 Pr2
HES2 Temp. increase during the Energy Saving
cycle, section 2 -30÷30°C / -54÷54°F 0 Pr2
Adr1 RS485 serial address, section 1 1÷247 1 Pr2
Adr2 RS485 serial address, section 2 1÷247 1 Pr2
dP1 Thermostat 1 probe value - - - - - - Pr1
dP2 Thermostat 2 probe value - - - - - - Pr1
dP3 Evaporator probe value - - - - - - Pr1
rEL Release software --- - - - Pr2
Ptb Parameter table - - - 4 Pr2
Pr2 Access to the protected parameter list - - - Pr1
Dixell S.p.A.
Via dell’Industria, 27 - 32010 Z.I Pieve d’Alpago (BL) ITALY
tel. +39 - 0437 - 98 33 - fax +39 - 0437 - 98 93 13 –
E-mail:[email protected] - http://www.dixell.com