Emerson Dixell XR03CH Wiring diagram

1598040330 XR03CH BMB GB r1.0 27.02.2018 XR03CH 1/3
DIGITAL CONTROLLER
XR03CH
1GENERAL WARNING __________________________________________________________________1
2GENERAL DESCRIPTION_______________________________________________________________1
3REGULATION_________________________________________________________________________1
4AUX OUTPUT_________________________________________________________________________1
5FRONT PANEL COMMANDS ____________________________________________________________1
6PARAMETERS________________________________________________________________________2
7DIGITAL INPUTS ______________________________________________________________________2
8INSTALLATION AND MOUNTING_________________________________________________________2
9ELECTRICAL CONNECTIONS ___________________________________________________________2
10 HOW TO USE THE HOT KEY____________________________________________________________2
11 ALARMSIGNALLING___________________________________________________________________2
12 TECHNICAL DATA_____________________________________________________________________2
13 CONNECTIONS _______________________________________________________________________3
14 DEFAULT SETTING VALUES____________________________________________________________3
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.
Checkthe application limits before proceeding.
Dixell Srl reserves the right to change the composition of its products, even without notice, ensuring
the same and unchanged functionality.
1.2 SAFETY PRECAUTIONS
Check the supply voltage is 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.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
the same and unchanged functionality.
2GENERAL DESCRIPTION
The XR03CH, in 3274x50mm short format, is microprocessor basedcontroller suitable for applicationson
normal temperature refrigerating units. It provides two relay output: one for compressor and the other onefor
alarm signalling or as auxiliary output. It provides an NTC probe input and a digital input for alarm signalling,
for switching the auxiliary output or for start defrost. The instrument is fully configurable through special
parameters thatcanbe easily programmed through the keyboard or the byHOTKEY.
3REGULATION
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 fault in the thermostat probe the start and stop of the compressor are timed through
parameters Cy and Cn.
4AUX OUTPUT
The function related to the second relay output can be selected by using par. o1:
-on = output enabled
-oFF = output disabled
5FRONT PANEL COMMANDS
To display target set point, in programming mode it selects a parameter or confirm an
operation
AUX To activate the auxiliary output
In programming mode it browses the parameter codes or increases the displayed
value
In programming mode it browses the parameter codes or decreases the displayed
value.
Keep it pressed more than 3 sec to power ON and OFF the device.
5.1 KEYS COMBINATION
+
To lock or unlock the keyboard
+
To enter in programming mode
+
To return to room temperature display
LED MODO SIGNIFICATO
On Compressor enabled
Flashing Anti-short cycle delay enabled (AC parameter)
On Heating relay active (if o1=on)
on Alarm/error
On Measurement unit
Flashing Programming mode
On Measurement unit
Flashing Programming mode
5.2 HOW TO SEE THE SET POINT
1. Push and immediately release the SET key, the set point willbe showed;
2. Push and immediately release the SET key or wait about 5s to return to normal visualisation.
5.3 HOW TO CHANGE THE SETPOINT
1. Push the SET key for more than 2 sec to change the Set point value;
2. The value of the set point will be displayed and the “°C”or “°F” LED starts blinking;
3. To change the Set value push the or arrows within 10 sec.
4. To memorise the new set point value push the SET keyagain or wait for 10 sec.
5.4 HOW TO CHANGE A PARAMETER VALUE
To change any parameter’s value, operate as follows:
1. Enter the Programming mode by pressing the SET+ keys for 3 sec (“°C” or “°F” LED starts
blinking).
2. Select the required parameter. Press the “SET” key to display its value
3. Use or to change its value.
4. Press “SET”to store the new value and move to the following parameter.
To exit: Press SET+ or wait for 15 sec without pressing a key.
NOTE: the set value is stored even when the procedure is exited by waiting the time-out to expire.
5.5 HIDDEN MENU
The hidden menu includes all the parameters of the instrument.
HOW TO ENTER THE HIDDEN MENU
1. Enter the Programming mode by pressing the SET+ keys for 3 sec (“°C” or “°F” LED starts
blinking).
2. Released the keys, then push again the SET+ keys for more than 7 sec. The L2 label will be
displayed immediatelyfollowed from the Hy parameter.
NOW THE HIDDEN MENU IS ACTIVE
3. Select the required parameter.
4. Press the “SET” key to display its value
5. Use or to change its value.
6. Press “SET”to store the new value and move to the following parameter.
To exit: Press SET+ or wait 15sec without pressing a key.
NOTE1: if none parameter is present in L1, after 3 sec the “nP” message will be displayed. Keep the
keys pressed till the L2 message is displayed.
NOTE2: the set value is stored even when the procedure is exited by waiting the time-out to expire.
MOVE A PARAMETER FROM THE HIDDEN MENU TO THE FIRST LEVEL AND
VICEVERSA
Each parameter present in the HIDDEN MENU can be removed or put into “THE FIRST LEVEL”
(user level) by pressing SET+ . In HIDDEN MENU when a parameter is present in First Level the
decimal point is on.
5.6 TO LOCK THE KEYBOARD
Keep pressed for more than 3 sec both and buttons.
The “OF” message will be displayed and the keyboard will be locked. If a key is pressed more than 3
sec the “OF” message will be displayed.

1598040330 XR03CH BMB GB r1.0 27.02.2018 XR03CH 2/3
5.7 TO UNLOCK THE KEYBOARD
Keep pressed together for more than 3 sec both and keys till the “on” message will be
displayed.
6PARAMETERS
REGULATION
Hy Differential: (0,1 to 25°C; 1 to 45°F) Intervention differential for set point. Compressor Cut IN is SET POINT +differential (Hy). Compressor Cut OUT iswhen the temperature
reaches the set point
LS Minimum SET POINT: (-55°C to SET; -67°F to SET) Setsthe minimum value for the set
point
US Maximum SET POINT: (SET to 99°C; SET to 99°F) Set the maximum value for set point
ot First probe calibration: (-9.9 to 9.9°C; -17 to 17°F) allows to adjust possible offset of the
first probe
od Outputs activation delay at start up: (0 to 99min) This function is enabled at the initial start up of the instrument and inhibits any output activation for the period of time set in the
parameter
AC Anti-short cycle delay: (0 to 50 min) minimum interval between the compressor stop and
the following restart
Cy Compressor ON time with faulty probe: (0 to 99 min) time during which the compressor
is active in case of faulty thermostat probe. With Cy=0 compressor is always OFF
Cn Compressor OFF time with faulty probe: (0 to 99 min) time duringwhich the compressor
is OFF in case of faulty thermostat probe. With Cn=0 compressor is always active
CH Kind of Action: cL= cooling action; Ht = heating action
DISPLAY
CF Measurement unit: (°C to °F) °C=Celsius; °F=Fahrenheit. WARNING: When the measurement unit is changed the SET point and the values of the parameters Hy, LS, US,
oE, o1, AU, AL have to be checked and modified if necessary)
rE Resolution: (dE to in) dE= decimal between -9.9 and 9.9°C; in= integer
dy Display delay: (0 to 15 min) when the temperature increases, the display is updated of 1
°C/1°F after this time
ALARMS
AU Maximum temperature alarm: (AL to 99°C; AL to 99°F) when this temperature is reached
the alarm is enabled, after the “Ad” delay time
AL Minimum temperature alarm: (-55°C to AU; -67°F to AU) when this temperature is
reached the alarm is enabled,after the “Ad” delay time
Ad Temperature alarm delay: (0 to 99 min) time interval between the detection of an alarm
condition and alarm signalling
o1 Auxiliary relay configuration: (on; oFF) on= enabled; oFF= disabled
DIGITAL INPUT (Only XR03CH)
iP Digital input polarity: (oP; cL) oP= activated by closing the contact; cL= activated by
opening the contact
iF Digital input configuration: (EA; bA; do; dF; Au; Hc) EA=external alarm: “EA” message is displayed; bA=serious alarm “CA” message is displayed; do=door switch function;
dF=defrost activation; Au=auxiliary relay activation; Hc=inversion of the kind of action
di Digital input delay: (0 to 99 min) with iF=EA or bA delay between the detection of the external alarm condition and its signalling. With iF=do it represents the delay to activate the
door open alarm
dC Compressor and fan status when open door: (no; Fn; cP; Fc) no=normal; Fn=Fans
OFF; cP=Compressor OFF; Fc=Compressor and fans OFF
rd Regulation with door open: (n to y) n=no regulation if door is opened; Y=when di is
elapsed regulation restarts even if door open alarm is present
OTHER
Pt Parameter code table
rL Software release
7DIGITAL INPUTS
The free voltage digitalinput is programmable in different configurations by the “iF” parameter.
7.1 DOOR SWITCH (IF=DO)
It signals the door status and the corresponding relay output status through the “dC”parameter: no =
normal (any change); Fn = Fan OFF; CP = Compressor OFF; FC = Compressor and fan OFF.
Since the door is opened, after the delay time set through parameter “di”, the door alarm is enabled,
the display shows the message “dA” and the regulation restarts if rd = y. 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.
7.2 EXTERNAL ALARM (IF=EA)
As soon as the digitalinput is activated the unit will wait for “di” time delay before signalling the “EA”
alarm message. The outputs status don’t change. The alarm stops just after the digital input is de-
activated.
7.3 SERIOUS ALARM (IF=BA)
When the digital input is activated, the unit will wait for “di” 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.
7.4 START DEFROST (IF=DF)
It starts a defrost if there are the right conditions. After the defrost is finished, the normal regulation
will restart only if the digital input is disabled otherwise the instrument will wait until the “dd” safety
time is expired.
7.5 INVERSION OF THE KIND OF ACTION: HEATING - COOLING (IF=HC)
This function allows to invert the regulation of the controller: from cooling to heating and viceversa.
8INSTALLATION AND MOUNTING
The XR03CH shall be mounted on vertical panel, in a 29x71 mm
hole, and fixed using the specialbracket supplied.
The temperature range allowed for correct operation is from 0 to
60°C. Avoid places subject to strong vibrations, corrosive gases,
excessive dirt or humidity. The same recommendations apply to
probes. Let air circulate bythe cooling holes.
9ELECTRICAL CONNECTIONS
The instrument is provided with screw terminalblock to connect cables with a cross section up to 2.5
mm2. 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 externalrelay.
1.1 PROBES
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.
10 HOW TO USE THE HOT KEY
1.2 HOW TO PROGRAM THE HOT KEY FROM THE INSTRUMENT (UPLOAD)
1. Program one controller with the front keypad.
2. When the controller is ON, insert the “Hot key” and push button; the "uP" message will appear
followed a by flashing “Ed”
3. Push “SET” key and the “Ed” will stop flashing
4. Turn OFF the instrument remove the “Hot Key”, then turn it ON again
NOTE: the “Er” message is displayed for failed programming. In this case push again o key if you want to
restartthe upload again or remove the “Hot key” to abort the operation.
4.1 HOW TO PROGRAM AN INSTRUMENT USING HOT KEY (DOWNLOAD)
1. Turn OFFthe instrument.
2. Insert a programmed “Hot Key” into the 5-PIN connector and then turn the Controller ON
3. Automatically the parameter list of the “Hot Key” is downloaded into the Controller memory, the
“do”message is blinking followed a byflashing “Ed”
4. After 10 seconds the instrument willrestart working with the new parameters
5. Remove the “Hot Key”
NOTE: the “Er” message is displayed for failed programming. In this case push again o key if you want to
restartthe upload again or remove the “Hot key” to abort the operation.
11 ALARM SIGNALLING
Mess. Cause Outputs
"P1" Room probe failure Compressor output according to “Cy”e “Cn”
"HA" Maximum temperature alarm Outputs unchanged
"LA" Minimum temperature alarm Outputs unchanged
“EA” External alarm Outputs unchanged
“CA” Serious external alarm All outputs OFF
“dA” Door Open Compressor and fans restarts
4.2 ALARM RECOVERY
Probe alarms P1”and “P2” start some seconds after the fault in the related probe; they automatically
stop some seconds after the probe restarts normal operation. Check connections before replacing
the probe. Temperature alarms “HA” and “LA” automatically stop as soon as the temperature returns
to normal values.
Alarms “EA” and “CA” (with iF=bA) recover as soon as the digital input is disabled.
12 TECHNICAL DATA
Housing: self extinguishing ABS
Case: frontal 32x74 mm; depth 50mm
Mounting: panel mounting in a 71x29mm panel cut-out
Protection: IP20; Frontal protection: IP65
Connections: Screw terminal block 2,5 mm2wiring
Power supply: according to the model 110Vac 10%, 50/60Hz --- 230Vac 10%, 50/60Hz
Power absorption: 3.5VA max
Display: 2 digits, red LED, 14,2 mm high; Inputs: Up to 2 NTC probes
Digital input: free voltage contact (if present)
Relay outputs: compressor SPST 20(8)A 250Vac or 8(3) A 250Vac
Aux: SPDT 8(3) A 250Vac
Data storing: on the non-volatile memory (EEPROM)
Kind of action: 1B; Pollution degree: 2; Software class: A
Rated impulsive voltage: 2500V; Overvoltage Category: II
Operating temperature: 0 to 60 °C; Storage temperature: -25to60°C
Relative humidity: 20 to 85% (no condensing)
Measuring and regulation range: NTC probe: -40 to 110°C
Resolution: 0,1 °C or 1°Cor 1 °F (selectable); Accuracy (ambient temp. 25°C): ±0,1 °C ±1 digit

1598040330 XR03CH BMB GB r1.0 27.02.2018 XR03CH 3/3
13 CONNECTIONS
NOTE: In modelwith 110Vac the power supplyhas to be connected to 6-7 terminals
14 DEFAULT SETTING VALUES
LABEL DESCRIPTION RANGE DEFAULT
Hy Differential 0.1 to 25°C
1 to 45°F 2.0°C
LS Minimum Set Point -55°C to SET
-67°F to SET -55°C
US Maximum Set Point SET to 99°C
SET to 99°F 99°C
ot First probe calibration -9.9 to 9.9°C
-17 to 17°F 0°C
od Outputs activation delay at start up 0 to 99min 0
AC Anti-short cycle delay 0 to 50 min 1
Cy Compressor ON time faulty probe 0 to 99 min 15
Cn Compressor OFF time faulty probe 0 to 99 min 30
CF Measurement units °C; °F °C
rE Resolution dE; in dE
dy Display delay 0 to 15 min 0
id Interval between defrost cycles 0 ÷ 99 (hour) 6
Md Maximum lenght for defrost 0 ÷ 99 (min.) 30
dF Display during defrost rt(0) - it(1) - SP(2) - dE(3) it
FC Fans operating mode C_n(0) - O_n(1) - C_Y(2) -
O_Y(3) O_Y
AU Maximum temperature alarm ALL to 99°C
ALL to 99°F 99.0°C
AL Minimum temperature alarm -55°C to ALU
-67°F to ALU -55.0°C
Ad Temperature alarm delay 0 to 99 min 15
o1 Auxiliary relay configuration on; oFF fn
iP Digital input polarity cL; oP cL
iF Digital input configuration EA; bA; do;dF; Au; Hc do
di Digital input delay 0 to 99 min 15
dC Compressor and fan status when open
door no; Fn; cP; Fc FC
rd Regulation with door open n; Y Y
Pt Parameter code table Read Only - - -
rL Firmware release Read Only - - -