dixell EMERSON XR70C Wiring diagram

1592007261 XR70C-D XR72C GB r1.0 18.11.2015 XR70C –XR70D - XR72C 1/4
Digital controller with defrost and fans management
XR70C–XR70D –XR72C
1. GENERAL WARNING
1.1 PLEASE READ BEFORE USING THIS MANUAL
This manual is part of the product and should be kept near the instrument for easy and
quick reference.
The instrument shall not be used for purposes different from those described hereunder.
It cannot be used as a safety device.
Check the application limits before proceeding.
Dixell Srl reserves the right to change the composition of its products, even without
notice, ensuring the same and unchanged functionality.
1.2 SAFETY PRECAUTIONS
Check the supply voltage is 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.
2. GENERAL DESCRIPTION
Models XR70C and XR72C, 32x74 mm format, and XR70D, DIN rail format, are a
microprocessor based controllers, suitable for applications on medium or low temperature
ventilated refrigerating units. They have three relay outputs to control compressor, fan, and
defrost, which can be either electrical or reverse cycle (hot gas). XR70C and XR70D have a
fourth relay for alarms signalling. XR72C has a fourth relay to pilot a second compressor.
They are also provided with two NTC or PTC probe inputs, one for temperature control, the
other, to be located onto the evaporator, to control the defrost termination temperature and to
managed the fan. The instrument is fully configurable through special parameters that can be
easily programmed through the keyboard.
3. CONTROLLING LOADS
3.1 COMPRESSOR
The regulation is performed according to
the temperature measured by the
thermostat probe with a positive
differential from the set point: if the
temperature increases and reaches set
point plus differential the compressor is
started and then turned off when the
temperature reaches the set point value
again.
In case of fault in the thermostat probe the start and stop of the compressor are timed through
parameters “COn” and “COF”.
3.2 2ND COMPRESSOR MANAGEMENT –XR72C ONLY
The relay of the second compressor is activated in parallel with the relay of the first
compressor, with a possible delay set in the AC1 parameter. Both the compressors are
switched off at the same time.
3.3 DEFROST
Two defrost modes are available through the “tdF” parameter: defrost through electrical heater
(tdF = EL) and hot gas defrost (tdF = in). Other parameters are used to control the interval
between defrost cycles (IdF), its maximum length (MdF) and two defrost modes: timed or
controlled by the evaporator’s probe (P2P).
At the end of defrost dripping time is started, its length is set in the FSt parameter. With FSt =0
the dripping time is disabled.
3.4 CONTROL OF EVAPORATOR FANS
The fan control mode is selected by means of the “FnC” parameter:
FnC = C_n: fans will switch ON and OFF with the compressor and not run during defrost;
FnC = o_n fans will run even if the compressor is off, and not run during defrost;
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 will run continuously also during defrost
An additional parameter “FSt” provides the setting of temperature, detected by the evaporator
probe, above which the fans are always OFF. This is used to make sure circulation of air only
if his temperature is lower than set in “FSt”.
3.4.1 Forced activation of 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.
Functioning: if the difference of temperature between the evaporator and the room probes is
more than the value of the Fct parameter, the fans are switched on.
With Fct=0 the function is disabled.
4. FRONT PANEL COMMANDS
XR70C –XR72C XR70D
SET: To display target set point; in programming mode it selects a parameter or confirm an
operation.
(DEF) To start a manual defrost
o(UP): To see the last temperature alarm happened; in programming mode it browses the
parameter codes or increases the displayed value.
n(DOWN) To see the last temperature alarm happened; in programming mode it browses
the parameter codes or decreases the displayed value.
KEY COMBINATIONS:
o + n To lock & unlock the keyboard.
SET + nTo enter in programming mode.
SET + o To return to the room temperature display.
4.1 USE OF LEDS
Each LED function is described in the following table.
LED
MODE
FUNCTION
ON
Compressor enabled
Flashing
-Programming Phase (flashing with )
- Anti-short cycle delay enabled
ON
Defrost enabled
Flashing
- Programming Phase (flashing with )
- Drip time in progress
ON
Fans enabled
Flashing
Fans delay after defrost in progress.
ON
An temperature alarm happened
5. TEMPERATURE ALARM AND ITS DURATION RECORDING (HACCP)
Instruments signal and
record temperature
alarms, together with
their duration and max
value reached. See
drawing:
Ex. High temperature alarm
Set
ALu
High temp. alarm
Time
Temperature
ALL
Low temp. alarm
X
X
X
Alarm duration
Max
Temperature
Safe food zone
5.1 HOW TO SEE THE ALARM DURATION AND MAX (MIN) TEMPERATURE
If the alarm LED is on, an alarm has taken place. To see the kind of alarm, the max (min)
reached temperature and alarm duration do as follows:
1. Push the Up or Down key.
2. On the display the following message is shown::
“HAL” for high temperature alarm (“LAL” for the minimum allarm), followed by the
Maximum (minimum) temperature.
Then the “tiM” (tiMe) message is displayed, followed by the “Duration” in h.mm.
3. Then the instrument displays the temperature once again.
NOTE1: if an alarm is still occurring the “tim” shows the partial duration.
NOTE2: the alarm is recorded when the temperature come back to normal values
5.2 HOW TO RESET A RECORDED ALARM OR ONE THAT IS STILL
OCCURRING
1. Hold the SET key pressed for more than 3s, while the recorded alarm is displayed. (the
rSt message will be displayed)
2. To confirm the operation, the “rSt” message starts blinking and the normal temperature
will be displayed.

1592007261 XR70C-D XR72C GB r1.0 18.11.2015 XR70C –XR70D - XR72C 2/4
6. MAIN FUNCTIONS
6.1 HOW TO SEE THE SETPOINT
1. Push and immediately release the SET key: the display will show
the Set point value;
2. Push and immediately release the SET key or wait for 5 seconds to display the probe
value again.
6.2 HOW TO CHANGE THE SETPOINT
1. Push the SET key for more than 2 seconds to change the Set point value;
2. The value of the set point will be displayed and the LED starts blinking;
3. To change the Set value push the o or narrows within 10s.
4. To memorise the new set point value push the SET key again or wait 10s.
6.3 HOW TO START A MANUAL DEFROST
Push the DEF key for more than 2 seconds and a manual defrost will
start.
6.4 HOW TO CHANGE A PARAMETER VALUE
To change the parameter’s value operate as follows:
1. Enter the Programming mode by pressing the Set and DOWN key for
3s ( and start blinking).
2. Select the required parameter.
3. Press the “SET” key to display its value (now only the LED is
blinking).
4. Use “UP” or “DOWN” to change its value.
5. Press “SET” to store the new value and move to the following parameter.
To exit: Press SET + UP or 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.
6.5 THE HIDDEN MENU
The hidden menu Includes all the parameters of the instrument.
6.5.1 HOW TO ENTER THE HIDDEN MENU
1. Enter the Programming mode by pressing the Set + nkey for 3s
(LED 1 and start blinking).
2. When a parameter is displayed keep pressed the Set+nfor more
than 7s.
The Pr2 label will be displayed immediately followed from the HY
parameter. NOW YOU ARE IN THE HIDDEN MENU.
3. Select the required parameter.
4. Press the “SET” key to display its value (Now only the LED is blinking).
5. Use o or nto change its value.
6. Press “SET” to store the new value and move to the following parameter.
To exit: Press SET + o or 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.
6.5.2 HOW TO 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 + n”.
In HIDDEN MENU when a parameter is present in First Level the decimal point is on.
6.6 HOW TO LOCK THE KEYBOARD
1. Keep pressed for more than 3 s the UP and DOWN keys.
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 point or the MAX o Min temperature stored
3. If a key is pressed more than 3s the “POF” message will be displayed.
6.7 TO UNLOCK THE KEYBOARD
Keep pressed together for more than 3s the o and nkeys, till the “Pon” message will be
displayed.
6.8 THE CONTINUOUS CYCLE
When defrost is not in progress, it can be activated by holding the “o”
key pressed for about 3 seconds.
The compressor operates in continuous mode 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 “o”
for 3 seconds.
7. PARAMETERS
NOTE: the parameters preceded by dots are in the Hidden Menu.
REGULATION
Hy Differential: (0,1 ÷ 25,5°C / 1÷255 °F) Intervention differential for set point. Compressor
Cut IN is Set Point Plus Differential (Hy). Compressor Cut OUT is when the temperature
reaches the set point.
LS Minimum set point: (- 50°C÷SET/-58°F÷SET): Sets the minimum acceptable value
for the set point.
US Maximum set point: (SET÷110°C/ SET÷230°F). Set the maximum acceptable
value for set point.
Ot Thermostat probe calibration: (-12.0÷12.0°C; -120÷120°F) allows to adjust possible
offset of the thermostat probe.
P2P Evaporator probe presence: n= not present: the defrost stops by time; y= present: the
defrost stops by temperature.
OE Evaporator probe calibration: (-12.0÷12.0°C; -120÷120°F). allows to adjust
possible offset of the evaporator probe.
OdS Outputs activation delay at start up: (0÷255min) This function is enabled at
the initial start up of the instrument and inhibits any output activation for the period of
time set in the parameter.
AC Anti-short cycle delay: (0÷50 min) minimum interval between the compressor stop and
the following restart.
AC1 2nd compressor delay at start up (only for XR72C). (0÷255s) Time interval between
the switching on of the first compressor and the second one.
CCt Compressor ON time during continuous cycle: (0.0÷24.0h; res. 10min) Allows to
set the length of the continuous cycle: compressor stays on without interruption for the
CCt time. Can be used, for instance, when the room is filled with new products.
COn Compressor ON time with faulty probe: (0÷255 min) time during which the
compressor is active in case of faulty thermostat probe. With COn=0 compressor is
always OFF.
COF Compressor OFF time with faulty probe: (0÷255 min) time during which the
compressor is OFF in case of faulty thermostat probe. With COF=0 compressor is
always active.
DISPLAY
CF Temperature measurement unit:
°C=Celsius; °F=Fahrenheit. WARNING: When the measurement unit is changed the
SET point and the values of the parameters Hy, LS, US, ot, oE, dtE, FCt, FSt, ALU and
ALL have to be checked and modified if necessary).
rES Resolution (for °C): (in = 1°C; dE = 0.1 °C) allows decimal point display.
Lod Display : select which probe is displayed by the instrument: P1 = Thermostat
probe; P2 = Evaporator probe
DEFROST
tdF Defrost type: EL = electrical heater; in = hot gas
dtE Defrost termination temperature: (-50÷50 °C/ -58÷122°F) (Enabled only when
EdF=Pb) sets the temperature measured by the evaporator probe, which causes the end
of defrost.
IdF Interval between defrost cycles: (0÷120h) Determines the time interval between the
beginning of two defrost cycles.
MdF (Maximum) length for defrost: (0÷255min) When P2P = n, (not evaporator probe:
timed defrost) it sets the defrost duration, when P2P = y (defrost end based on
temperature) it sets the maximum length for defrost. With MdF=0 the defrost is disabled.
dSd Start defrost delay: ( 0÷99min) This is useful when different defrost start times are
necessary to avoid overloading the plant.
dFd Temperature displayed during defrost: (rt = real temperature; it = temperature at
defrost start; SEt = set point; dEF = “dEF” label)
dAd MAX display delay after defrost: (0÷255min). Sets the maximum time between
the end of defrost and the restarting of the real room temperature display.
Fdt Drip time: (0  120 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.
dPo First defrost after start-up: (y = immediately; n = after the IdF time)
dAF Defrost delay after continuous cycle: (0  23.5h) time interval between the end
of the fast freezing cycle and the following defrost related to it.
FANS
FnC Fans operating mode: C-n= runs with the compressor, OFF during defrost;
o-n = continuous mode, OFF during defrost;
C-Y = runs with the compressor, ON during defrost;
o-Y = continuous mode, ON during defrost;
Fnd Fans delay after defrost: (0÷255min) Time interval between end of defrost and
evaporator fans start.
Fct Temperature differential avoiding short cycles of fans (0÷59°C; Fct=0 function
disabled). If the difference of temperature between the evaporator and the room probes
is more than the value of the Fct parameter, the fans are switched on.
FSt Fans stop temperature: (-50÷50°C/122°F) setting of temperature, detected by
evaporator probe, above which fans are always OFF.
ALARMS
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: (SET÷110°C; SET÷230°F) when this temperature is
reached the alarm is enabled, after the “ALd” delay time.
ALL Minimum temperature alarm: (-50.0 ÷ SET°C; -58÷230°F when this temperature is
reached the alarm is enabled, after the “ALd” delay time.
ALd Temperature alarm delay: (0÷255 min) time interval between the detection of an
alarm condition and alarm signalling.
dAO Exclusion of temperature alarm at startup: (from 0.0 min to 23.5h) time interval
between the detection of the temperature alarm condition after instrument power on and
alarm signalling.
tbA Alarm relay manual silencing(only for XR70C): (y= when an alarm is
occurring the alarm relay is disabled by pushing a key; n=the alarm relay is activated for
the duration of the alarm).

1592007261 XR70C-D XR72C GB r1.0 18.11.2015 XR70C –XR70D - XR72C 3/4
AoP Alarm relay polarity (only for XR70C): CL = contact 1-5 are closed when an
alarm happens. oP = contact 1-5 are open when an alarm happens.
DIGITAL INPUT
i1P Digital input polarity: oP: the digital input is activated by opening the contact; CL: the
digital input is activated by closing the contact.
i1F Digital input configuration: 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; LHt =not
enabled; Htr = kind of action inversion (cooling –heating).
did:(0255 min) with i1F= EAL or i1F = bAL digital input alarm delay: delay between the
detection of the external alarm condition and its signalling.
with i1F= dor: door open signalling delay
with i1F = PAL: time for pressure switch function: time interval to calculate the
number of the pressure switch activation.
nPS Pressure switch number: (0

15) Number of activation of the pressure switch, during
the “did” interval, before signalling the alarm event (I2F= PAL).
If the nPS activation in the did time is reached, switch off and on the instrument to
restart normal regulation.
odc Compressor and fan status when open door: no = normal; Fan = Fan OFF;
CPr = Compressor OFF; F_C = Compressor and fan OFF.
OTHER
PbC Type of probe: it allows to set the kind of probe used by the instrument: PbC = PBC
probe, ntC = NTC probe.
dP1 First probe display
dP2 Second probe display
rEL Software release for internal use.
Ptb Parameter table code: readable only.
8. DIGITAL INPUT
The free contact digital input is programmable in five different configurations by the “i1F”
parameter.
8.1 DOOR SWITCH INPUT (i1F = 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. 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.
8.2 GENERIC ALARM (i1F = 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 don’t change. The alarm stops just after the
digital input is de-activated.
8.3 SERIOUS ALARM MODE (i1F = 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.
8.4 PRESSURE SWITCH (i1F = 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.
8.5 START DEFROST (i1F = dFr)
It starts a defrost if there are the right conditions. After the defrost is finished, the normal
regulation will restart only if the digital input is disabled otherwise the instrument will wait until
the “MdF” safety time is expired.
8.6 INVERSION OF THE KIND OF ACTION: HEATING-COOLING (i1F = Htr)
This function allows to invert the regulation of the controller: from cooling to heating and
viceversa.
8.7 DIGITAL INPUTS POLARITY
The digital input polarity depends on the “i1P” parameter.
i1P=CL: the input is activated by closing the contact.
i1P=OP: the input is activated by opening the contact
9. INSTALLATION AND MOUNTING
Instruments XR70C and XR72C shall be mounted on vertical
panel, in a 29x71 mm hole, and fixed using the special bracket
supplied.
To obtain an IP65 protection grade use the front panel rubber
gasket (mod. RG-C) as shown in figure.
Instrument XR70D shall be mounted on an omega DIN rail
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 air circulate by the cooling holes.
10. ELECTRICAL CONNECTIONS
The instrument is provided with screw terminal block 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 external relay.
10.1 PROBE CONNECTION
The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid
infiltration. It is recommended to place the thermostat probe away from air streams to correctly
measure the average room temperature. Place the defrost termination probe among the
evaporator fins in the coldest place, where most ice is formed, far from heaters or from the
warmest place during defrost, to prevent premature defrost termination.
11. HOW TO USE THE HOT KEY
11.1 HOW TO PROGRAM A 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 okey; the "uPL" message
appears followed a by flashing “End”
3. Push “SET” key and the End will stop flashing.
4. Turn OFF the instrument remove the “Hot Key”, then turn it ON again.
NOTE: the “Err” message is displayed for failed programming. In this case push again okey
if you want to restart the upload again or remove the “Hot key” to abort the operation.
11.2 HOW TO PROGRAM AN INSTRUMENT USING A HOT KEY
(DOWNLOAD)
1. Turn OFF the instrument.
2. Insert a programmed “Hot Key” into the 5 PIN receptacle and then turn the
Controller ON.
3. Automatically the parameter list of the “Hot Key” is downloaded into the Controller
memory, the “doL” message is blinking followed a by flashing “End”.
4. After 10 seconds the instrument will restart working with the new parameters.
5. Remove the “Hot Key”..
NOTE the message “Err” is displayed for failed programming. In this case turn the unit off and
then on if you want to restart the download again or remove the “Hot key” to abort the
operation.
12. ALARM SIGNALS
Message
Cause
Outputs
“P1”
Room probe failure
Compressor output according to par. “Con”
and “COF”
“P2”
Evaporator probe failure
Defrost end is timed
“HA”
Maximum temperature alarm
Outputs unchanged.
“LA”
Minimum temperature alarm
Outputs unchanged.
“dA”
Door open
Compressor and fans according to “odc”
“EA”
External alarm
Output unchanged.
“CA”
Serious external alarm (i1F=bAL)
All outputs OFF.
“CA”
Pressure switch alarm (i1F=PAL)
All outputs OFF
12.1 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 thermostat temperature
returns to normal values and when defrost starts.
Alarms “EA” and “CA” (with i1F=bAL) recover as soon as the digital input is disabled.
Alarm “CA” (with i1F=PAL) recovers only by switching off and on the instrument.

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13. TECHNICAL DATA
Housing: self extinguishing ABS.
Case: XR70C, XR72C frontal 32x74 mm; depth 60mm;
XR70D 4 DIN modules 70x85 mm; depth 61mm
Mounting: XR70C, XR72C panel mounting in a 71x29mm panel cut-out
XR70D DIN RAIL mounted in a omega (3) din rail
Protection: IP20.
Frontal protection: IP65 with frontal gasket RG-C (optional).
Connections: Screw terminal block 2,5 mm2wiring.
Power supply: 24Vac, ±10% 50/60Hz, or 230Vac 10%, 50/60Hz, or 110Vac 10%,
50/60Hz
Power absorption: 3VA max
Display: 3 digits, red LED, 14,2 mm high.
Inputs: 2 NTC or PTC probes; Digital input: free contact
Relay outputs - compressor: relay SPST 5(2) A, 250Vac
defrost: SPDT relay 8(3) A, 250Vac
fan: relay SPST 5(2) A, 250Vac
alarm (XR70C/D only): relay SPST 5(2) A, 250Vac
2° compressor (XR72C only): relay SPST 5(2) A, 250Vac
Buzzer: optional
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.
Relative humidity: 2085% (no condensing)
Measuring and regulation range: NTC probe: -40÷110°C (-40÷230°F)
PTC probe: -50÷150°C (-58÷302°F)
Resolution: 0,1 °C or 1°C or 1 °F (selectable).
Accuracy (ambient temp. 25°C): ±0,7 °C ±1 digit
14. CONNECTIONS
14.1 XR70C
Room Evap
10 11 12
4 5 6 7 8
n.c. Power
Supply
230V
Digital
input
Line
1 2 3
CompDef
Alarm
HOT KEY
9
Fan
Max
15A
8(3)A
250Vac
5(2)A
250Vac
5(2)A
250Vac
5(2)A
250Vac
24Vac supply: connect to the
terminals 7 and 8.
120Vac supply: connect to
the terminals 7 and 8.
14.2 XR72C
Room Evap
10 11 12
4 5 6 7 8
n.c. Power
Supply
230V
Digital
input
Line
1 2 3
Comp1Def
HOT KEY
9
Fan
Max
15A
8(3)A
250Vac
5(2)A
250Vac
5(2)A
250Vac
5(2)A
250Vac
24Vac supply: connect to the
terminals 7 and 8.
120Vac supply: connect to
the terminals 7 and 8.
14.3 XR70D: 8A COMPRESSOR
Line
8(3)A/250Vac 8(3)A/250Vac8(3)A/250Vac
13 14 15 16 17 18 19 20 21 22 23 24
Comp
n.c.n.c.
1 2 3 9 10 11 124 5 6 7 8
n.c.
8(3)A/250Vac
Power
Supply
HOT KEY
24Vac/dc supply: connect to
the terminals 11 and 12.
120Vac supply: connect to
the terminals 11 and 12.
230Vac supply: connect to
the terminals 11 and 12.
14.4 XR70D: 20A COMPRESSOR
Line
8(3)A/250Vac 8(3)A/250Vac20(8)A/250Vac
15 16 17 18 19 20 21 22 23 24
Comp
n.c.n.c.
8(3)A/250Vac
1 2 3 9 10 11 124 5 6 7 8
Power
Supply
HOT KEY
24Vac/dc supply: connect to
the terminals 11 and 12.
120Vac supply: connect to
the terminals 11 and 12.
230Vac supply: connect to
the terminals 11 and 12.
15. DEFAULT SETTING VALUES
Label
Name
Range
°C/°F
Set
Set point
LS÷US
-5/0
Hy
Differential
0,125.5°C/ 1255°F
2/4
LS
Minimum set point
-50°CSET/-58°FSET
-50/-58
US
Maximum set point
SET110°C/ SET 230°F
110/230
Ot
Thermostat probe calibration
-1212°C /-120120°F
0
P2P
Evaporator probe presence
n=not present; Y=pres.
y
OE
Evaporator probe calibration
-1212°C /-120120°F
0
OdS
Outputs delay at start up
0÷255 min
0
AC
Anti-short cycle delay
0 50 min
1
AC1
2nd compressor delay
0 255s
1
CCt
Continuos cycle duration
0.0÷24.0h
0.0
COn
Compressor ON time with faulty probe
0 255 min
15
COF
Compressor OFF time with faulty probe
0 255 min
30
CF
Temperature measurement unit
°C °F
°C/°F
rES
Resolution
in=integer; dE= dec.point
dE/-
Lod
Probe displayed
P1;P2
P1
tdF
Defrost type
EL=el. heater; in= hot gas
EL
dtE
Defrost termination temperature
-50 50 °C
8/46
IdF
Interval between defrost cycles
0 120 h
6
MdF
(Maximum) length for defrost
0 255 min
30
dSd
Start defrost delay
0÷99min
0
dFd
Displaying during defrost
rt, it, SEt, DEF
it
dAd
MAX display delay after defrost
0 ÷ 255 min
30
Fdt
Draining time
0÷120 min
0
dPo
First defrost after startup
n=after IdF; y=immed.
n
dAF
Defrost delay after fast freezing
0 ÷ 23h e 50’
0.0
Fnc
Fan operating mode
C-n, o-n, C-y, o-Y
o-n
Fnd
Fan delay after defrost
0÷255min
10
Fct
Differential of temperature for forced
activation of fans
0÷50°C
10
FSt
Fan stop temperature
-50÷50°C/-58÷122°F
2/35
ALc
Temperat. alarms configuration
rE= related to set;
Ab = absolute
Ab
ALU
MAXIMUM temperature alarm
Set110.0°C; Set÷230°F
110/230
ALL
Minimum temperature alarm
-50.0°CSet/ -58°FSet
-50/-58
ALd
Temperature alarm delay
0 255 min
15
dAO
Delay of temperature alarm at start up
0 23h e 50’
1.30
tbA
Manual disabling of alarm relay
y=yes; n=no
y
AoP
Alarm relay polarity
oP; cL
cL
i1P
Digital input polarity
oP=opening;CL=closing
CL
i1F
Digital input configuration
EAL=extern. alarm; bAL=lock regulation;
PAL=press. switch; dor=door switch;
dEF=defrost; LHt=disabled; Htr = heating
- cooling
dor
did
Digital input alarm delay
0÷255min
15
Nps
Number of activation of pressure switch
0 ÷15
15
odc
Compressor and fan status when open
door:
no = normal; Fan = Fan OFF; CPr =
Compr. OFF; F_C = Compr & fan OFF
F-C
PbC
Kind of probe
Ptc; ntc
ntc/Ptc
dP1
Room probe display
--
--
dP2
Evaporator probe display
--
--
rEL
Software release
--
2.7
Ptb
Map code
--
-
Hidden parameters