Page 1
Digital controller for variable speed compressors
XRi77CX
1. GENERAL WARNING............................................................................................................................. 1
2. GENERAL DESCRIPTION..................................................................................................................... 1
3. CONTROLLING LOADS......................................................................................................................... 1
4. VARIABLE SPEED COMPRESSOR CONTROL ............................................................................... 1
5. PULL DOWN ............................................................................................................................................ 2
6. DUAL MAP FEATURE .........................................................ERROR! BOOKMARK NOT DEFINED.
7. FRONT PANEL COMMANDS ............................................................................................................... 2
8. MAX & MIN TEMPERATURE MEMORIZATION ................................................................................ 2
9. MAIN FUNCTIONS.................................................................................................................................. 2
10. PARAMETERS ........................................................................................................................................ 3
11. DIGITAL INPUTS ..................................................................................................................................... 4
12. RS485 SERIAL LINE – FOR MONITORING SYSTEMS .................................................................. 5
13. INSTALLATION AND MOUNTING ....................................................................................................... 5
14. ELECTRICAL CONNECTIONS ............................................................................................................. 5
15. HOW TO USE THE HOT KEY............................................................................................................... 5
16. ALARM SIGNALS .................................................................................................................................... 5
17. TECHNICAL DATA.................................................................................................................................. 5
18. WIRINGS .................................................................................................................................................. 5
19. DEFAULT SETTING VALUES............................................................................................................... 5
1. GENERAL WARNING
1.1 PLEASE READ BEFORE USING THIS MANUAL
This manual is part of the product and should be kept near the instrument for easy and quick
reference.
The instrument shall not be used for purposes different from those described hereunder. It cannot be
used as a safety device.
Check the application limits before proceeding.
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
Model XRi77CX, format 32x74mm, is microprocessor based controller, suitable for applications on
medium or low temperature ventilated refrigerating units. It has four relay outputs to control
compressor, fan, defrost, which can be either electrical or reverse cycle (hot gas) and light
(configurable). It could be provided with a Real Time Clock which allows programming of up to six
daily defrost cycles, divided into holidays and workdays. A “Day and Night” function with two different
set points is fitted for energy saving. It is also provided with up to four NTC probe inputs. The first
probe is used for temperature control. The second probe is used to control the defrost termination
temperature at the evaporator. One of the two digital inputs can operate as third temperature probe.
The fourth probe is used to control the condenser temperature (for condenser alarm management) or
to display a temperature.
The RS485 serial output allows connecting the unit to a network line (ModBUS-RTU compatible)
such as any dIXEL monitoring units of X-WEB family. The HOT-KEY receptacle allows
programming the controller by using an HOTKEY programming device.
The instrument is fully configurable through special parameters that can be easily programmed
through the frontal keyboard.
3. CONTROLLING LOADS
3.1 COMPRESSOR
The regulation is performed according
to the temperature measured by the
thermostat probe with a positive
differential (HY) over the set point: if the
temperature increases and reaches set
point plus differential, the compressor
will start. It will turn off as soon as 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 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.
3.3 CONTROL OF EVAPORATOR FANS
The fan control mode is selected by means of the FnC parameter:
FnC=C_n, fans will switch ON and OFF with the compressor and not run during defrost.
FnC=o_n, fans will run even if the compressor is off, and not run during defrost.
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.
3.3.1 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. How it works: if the temperature difference between evaporator probe and room probe
is higher than the FCt parameter value, fans will be switched on. With FCt=0 the function is disabled.
3.3.2 CYCLIC ACTIVATION OF THE FANS WITH COMPRESSOR OFF
When FnC=C-n or C-Y (fans working in parallel with the compressor), by means of the Fon and FoF
parameters the fans can carry out on and off cycles even if the compressor is switched off. When the
compressor is stopped the fans go on working for the Fon time. With Fon=0 the fans remain always
off, also when the compressor is off.
3.4 RELAY CONFIGURATION (PAR. oA0, oA1, oA2, oA3)
The functioning of the configurable relays (terminals 1-2 and 1-7-8) can be set by the oA1 and oA2
parameters, according to the kind of application. In the following paragraph the possible setting:
3.4.1 LIGHT RELAY
With oAx=LiG the related relay operates as light output.
3.4.2 AUXILIARY RELAY
Relay activation by digital input 1 or digital input 2 (oAx=AUS, i1F or i2F=AUS): with oAx=AUS
and i1F, i2F=AUS the AUX relay is switched on and off by digital inputs.
3.4.3 ON/OFF RELAY (OAX = ONF)
When oAx=onF, the related relay is activated when the controller is turned on and de-activated
when the controller is turned off.
3.4.4 NEUTRAL ZONE REGULATION
With oAx=db the related relay can control a heater element to perform a neutral zone action.
oAx cut in = SET-HY
oAx cut out = SET
3.4.5 ALARM RELAY
With oAx=Alr the related relay operates as alarm relay. It is activated every time an alarm happens.
Its status depends on the tbA parameter: if tbA=Y, the relay is silenced by pressing any key.
If tbA=n, the alarm relay stay on until the alarm condition recovers.
3.4.6 SECOND COMPRESSOR
If oAx=CP2, it will work as second compressor output. The anti-short cycle parameter AC1 gives the
possibility to desynchronize the compressor activations.
3.4.7 SECOND DEFROST OUTPUT
If oAx=dF2, it will work as second defrost output.
NOTE: It is also possible to manage 2 different and independent defrost by using special parameter
map. Please refer to Dixell to activate this function.
3.4.8 NIGHT BLIND MANAGEMENT DURING ENERGY SAVING CYCLES
With oAx=HES, the related relay operates to manage the night blind: the relay is energised when the
energy saving cycle is activated by digital input or frontal button.
3.4.9 HEATER FOR WATER DRIPPING
If oAx=Het, the related output will work as heater for water dripping during and after any defrost.
3.4.10 REGULATION OUTPUT
If oAx=inV, the related output will work as regulation output and will stay active as soon as the
regulation request is running.
4. VARIABLE SPEED COMPRESSOR CONTROL
The controller is able to drive variable speed compressor with frequency control input. The HOTKEY
port is able to issue a frequency signal from 30 to 200Hz, duty cycle=50%. A special cable (CABKXV1) is used to connect the frequency output of the controller to the frequency input of the
compressor. One of the available relays can be set as oAx=inV in order to control the condenser
fan. In this case the fans will be activated only when the regulation is running.
NOTE: in case of using an inverter compressor, it must be controlled ONLY from the frequency
output. DO NOT USE ANY RELAY TO CONTROL THE COMPRESSOR POWER SUPPLY.
4.1 CABLE FOR FREQUENCY OUTPUT
CAB/KXV1
4.2 PARAMETERS
The following parameters are used to set the regulation:
HY1 Differential for proportional band: (0.1 to 25.5°C; 1 to 45°F)
PMi Lower speed limit (in percentage): (0 to PMA)
PMA Upper speed limit (in percentage): (Pmi to 100%)
The wiring polarity follows:
WHITE GND (-)
GREEN FREQ (+)
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voS Speed variation when
temperature increases:
(0 to 100 Hz/min)
t1n Interval of time with speed fixed to P
m
i after start
-
up: (0 to 999 min)
Flashing
Fans delay after defrost in progress.
vo2 Speed variation when temperature decreases: (0 to 100 Hz/min)
t1F Interval of time with speed fixed to Pmi before stopping regulation: (0 to 999 min)
tC2 Interval of time to control temperature deadlocks: (1 to 255 min)
SPi Speed in case of probe error: (Pmi to PMA)
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.
At start-up and after reaching the SET value, it is possible to force the compressor speed to Pmi for
two different intervals of time defined from par. t1n and t1F.
I case of regulation probe error, the compressor speed will be set to the value of par. Spi.
4.3 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 lasts more than the tC2 interval of time, then the controller will
increment the actual speed of a fixed value of 10%. The new compressor speed will stay unchanged
till reaching the SETPOINT or until another interval of time equal to tC2 will expire.
4.4 HOT GAS DEFROST
In case of using hot-gas defrost, it will be possible to set the compressor speed by using par. Aod.
5. 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
SETPOINT
- 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 a couple of intervals (par. tAP) with
predefined compressor speed (par. tP1 and tP2).
6. FRONT PANEL COMMANDS
KEY COMBINATIONS:
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To display target set point; in programming mode it selects a parameter or confirm
an operation.
(DEF) To start a manual defrost.
(UP) To see the used parameter map. When in programming mode, it browses
the parameter codes or increases the displayed value.
(DOWN) To see the used parameter map. When in programming mode, it
browses the parameter codes or decreases the displayed value.
To switch the instrument on and off (when onF=oFF).
To switch on and off the light (when oAx=LiG).
+
+
+
To lock & unlock the keyboard.
To enter in programming mode.
To return to the room temperature display.
6.1 USE OF LEDS
Each LED function is described in the following table.
LED MODE FUNCTION
ON Compressor enabled
Flashing Anti-short cycle delay enabled
ON Defrost enabled
Flashing Drip time in progress
ON Fans enabled
ON An alarm is occurring
ON A PULL DOWN is running
ON Energy saving enabled
ON Light on
ON Auxiliary relay on
ON Measurement unit
,
Flashing Programming phase
7. MAX & MIN TEMPERATURE MEMORIZATION
7.1 HOW TO: SEE THE MIN TEMPERATURE
1. Press and release the DOWN button.
2. The “Lo” message will be displayed followed by the minimum temperature recorded.
3. By pressing the DOWN button again or waiting for 5 sec the normal display will be restored.
7.2 HOW TO: SEE THE MAX TEMPERATURE
1. Press and release the UP button.
2. The “Hi” message will be displayed followed by the maximum temperature recorded.
3. By pressing the UP button again or waiting for 5 sec the normal display will be restored.
7.3 HOW TO: RESET THE MAX AND MIN TEMPERATURE RECORDED
1. Keep SET button pressed for more than 3 sec while the max or min temperature is displayed.
(“rSt” message will be displayed)
2. After confirming the operation, the “rSt” message will start blinking and then the normal
temperature will be displayed.
8. MAIN FUNCTIONS
8.1 TO SET THE CURRENT TIME AND DAY (ONLY WITH RTC)
When the instrument is switched on, it’s necessary to program the time and day.
1. Enter the Pr1 programming menu, by pushing the SET+DOWN keys for 3 sec.
2. The rtC parameter is displayed. Push the SET key to enter the real time clock menu.
3. The Hur (hour) parameter is displayed.
4. Push the SET and set current hour by the UP and DOWN keys, then push SET to
confirm the value.
5. Repeat the same operations with Min (minutes) and dAy (day) parameters.
To exit: Push both SET+UP keys or wait for 15 sec without pushing any keys.
8.2 HOW TO: SEE THE SET POINT
1. Push and immediately release the SET key: the display will show the
Set point value;
2. Push and immediately release the SET key or wait for 5 sec to display
the probe value again.
8.3 HOW TO: CHANGE THE SET POINT
1. Push the SET button 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 will start blinking.
3. To change the actual value, push the UP or DOWN buttons within 10 sec.
4. To memorise the new set point value, push the SET button again or wait for 10 sec.
8.4 HOW TO: START A MANUAL DEFROST
Push the DEF button for more than 2 sec and a manual defrost will start.
8.5 HOW TO: CHANGE A PARAMETER VALUE
To change a parameter value, operate as follows:
1. Enter the Programming mode by pressing the SET+DOWN buttons for 3 sec (the °C or °F LED
will start blinking).
2. Select the required parameter. Press the SET button to display its actual value.
3. Use UP or DOWN buttons to change its value.
4. Press SET button to store the new value and move to the following parameter.
To exit: press SET+UP buttons or wait for 15 sec without pressing any key.
NOTE: the set value is stored even when the procedure exits by waiting for the time-out to expire.
8.6 THE HIDDEN MENU
The hidden menu includes all the parameters of the instrument.
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8.6.1 HOW TO: ENTER THE HIDDEN MENU
as for
the following formula (
rtr
(P1-P2)/100 + P2).
voS Speed variation when temperature increases:
(0 to 100 Hz/min)
t1n Interval of time with speed fixed to P
m
i after start
-
up: (0 to 999 min)
Spi Speed in case of probe error:
(Pm
i to PMA)
percentage of visualization.
display is updated of 1
°C or
1°F after this time.
tdF Defrost type:
(EL; in) EL
= electrical heater;
in = hot gas
.
compressor when the defrost is managed for inversion (hot
-
gas).
it = temperature at defrost start;
Set = set point;
dEF = “
dEF
” label.
always off.
1. Enter the Programming mode by pressing the SET+DOWN buttons for 3 sec (the °C or °F LED
will start blinking).
2. Released the buttons and then push again the SET+DOWN buttons for more than 7 sec. The Pr2
label will be displayed immediately followed from the HY parameter.
Now it is possible to browse the hidden menu.
3. Select the required parameter.
4. Press the SET button to display its value.
5. Use UP or DOWN to change its value.
6. Press SET to store the new value and move to the following parameter.
To exit: press SET+DOWN or wait for 15 sec without pressing any key.
NOTE1: if no parameter is present in Pr1 menu, after 3 sec the “noP” message will be displayed.
Keep the buttons pushed till the Pr2 message will be displayed.
NOTE2: the set value is stored even when the procedure is exited by waiting for the time-out to
expire
8.6.2 HOW TO: MOVE A PARAMETER FROM THE HIDDEN MENU TO THE FIRST LEVEL
AND VICEVERSA.
Each parameter present in the hidden menu (Pr2) can be moved into the user level (Pr1) by pressing
SET+DOWN buttons. If a parameter is part of the user level, when showed in the hidden menu the
decimal point will be lit.
8.7 HOW TO: LOCK THE KEYBOARD
1. Keep both UP and DOWN buttons pressed for more than 3 sec.
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 button is pressed more than 3 sec the “PoF” message will be displayed.
8.8 HOW TO: UNLOCK THE KEYBOARD
Keep both UP and DOWN pressed more than 3 sec till the “Pon” message will be displayed.
8.9 THE ON/OFF FUNCTION
When onF=oFF, pushing the ON/OFF key, the instrument is switched off. The “OFF”
message is displayed. In this configuration, the regulation is disabled.
To switch the instrument on, push again the ON/OFF key.
WARNING: Loads connected to the normally closed contacts of the relays are always
supplied and under voltage, even if the instrument is in stand-by mode.
9. PARAMETERS
rtC Real time clock menu (only for controller with RTC): to set the time and date and
defrost start time.
REGULATION
HY Differential: (0.1 to 25.5°C; 1 to 45°F) intervention differential for set point.
Compressor Cut IN is Set Point + differential (HY). Compressor Cut OUT is when the
temperature reaches the set point.
LS Minimum set point: (-100°C to SET; -148°F to SET) sets the minimum value for the
set point.
US Maximum set point: (SET to 150°C; SET to 302°F) set the maximum value for set
point.
Ot Thermostat probe calibration: (-12.0 to 12.0°C; -21 to 21°F) allows to adjust
possible offset of the thermostat probe.
P2P Evaporator probe presence: (n; Y) n = not present, the defrost stops by time;
Y = present, the defrost stops by temperature.
oE Evaporator probe calibration: (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible
offset of the evaporator probe.
P3P Third probe presence (P3): (n; Y) n = not present, the terminals 18-20 operate as
digital input; Y = present, the terminals 18-20 operate as third probe.
O3 Third probe calibration (P3): (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible
offset of the third probe.
P4P Fourth probe presence (P4): (n; Y) n = not present; Y = present
O4 Fourth probe calibration (P4): (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible
offset of the fourth probe
odS Outputs activation delay at start up: (0 to 255min) this function is enabled at the
initial start-up of the instrument and inhibits any output activation for the period of time
set in the parameter.
AC Anti-short cycle delay: (0 to 50min) minimum interval between the compressor stop
and the following restart.
AC1 Anti-short cycle delay for second compressor: (0 to 50min) minimum interval
between the second compressor stop and the following restart.
Rtr Percentage of the second and first probe for regulation: (0 to 100; 100=P1, 0=P2)
it allows to set the regulation according to the percentage of the first and second probe,
CCt PULL DOWN time: (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 PULL DOWN Set Point: (-100 to 150°C; -148 to 302°F) it sets the set point used
during any PULL DOWN cycle.
oHt Differential for PULL DOWN activation: (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.
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.
VARIABLE SPEED COMPRESSOR CONTROL
HY1 Differential for proportional band: (0.1 to 25.5°C; 1 to 45°F)
tAP Interval of time with fixed speed after PULL DOWN: (0 to 999 min)
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Pmi Lower speed limit (in percentage): (0 to PMA)
PMA Upper speed limit (in percentage): (Pmi to 100%)
vo2 Speed variation when temperature decreases: (0 to 100 Hz/min)
t1F Interval of time with speed fixed to Pmi before stopping regulation: (0 to 999 min)
tP1 First interval of time (tAP) with speed fixed after PULL DOWN: (Pmi to PMA)
tP2 Second interval of time (tAP) with speed fixed after PULL DOWN: (Pmi to PMA)
tC2 Interval of time to control temperature deadlocks: (1 to 255 min)
Aod Speed during defrost (used in case of hot gas defrost): (Pmi to PMA)
DISPLAY
CF Temperature measurement unit: (°C; °F) °C = Celsius; °F = Fahrenheit.
WARNING: When the measurement unit is changed the SET point and the values of
the parameters HY, LS, US, ot, ALU and ALL have to be checked and modified (if
necessary).
rES Resolution (for °C): (in=1°C; dE=0.1°C) allows decimal point display.
Lod Instrument display: (P1; P2, P3, P4, SET, dtr) it selects which probe is displayed by
the instrument. P1 = Thermostat probe; P2 = Evaporator probe; P3 = Third probe (only
for model with this option enabled); P4 = Fourth probe, SET = set point; dtr =
dLY Display delay: (0 to 20min00s; res. 10 sec) when the temperature increases, the
Dtr Percentage of the second and first probe for visualization when Lod=dtr: (0 to 99;
100=P1, 0=P2) if Lod=dtr it allows to set the visualization according to the percentage
of the first and second probe, as for the following formula (dtr(P1-P2)/100 + P2).
DEFROST
EdF Defrost mode (only for controller with RTC):
- rtC: Real Time Clock mode. Defrost time follows dd1...dd6 and Ld1…Ld6
parameters on working days.
- in: interval mode. The defrost starts when the time idF is expired.
dFP Probe selection for defrost termination: (nP; P1; P2; P3; P4) nP = no probe;
P1 =thermostat probe; P2 = evaporator probe; P3 =configurable probe; P4 = Probe on
Hot Key plug.
dtE Defrost termination temperature: (-55 to 50°C; -67 to 122°F) (enabled only when
EdF=Pb) sets the temperature measured by the evaporator probe, which causes the
end of defrost.
idF Interval between defrost cycles: (0 to 120 hours) determines the interval of time
between two defrost cycles.
MdF (Maximum) length for defrost: (0 to 255min) when P2P=n, (not evaporator probe:
timed defrost) it sets the defrost duration. When P2P=Y (defrost end based on
temperature) it sets the maximum length for defrost.
dSd Start defrost delay: (0 to 99min) this is useful when different defrost start times are
necessary to avoid overloading the plant.
StC Compressor stop before starting any defrost: (0 to 30 min) is used stop the
dFd Temperature displayed during defrost: (rt; it; Set; dEF) rt = real temperature;
dAd MAX display delay after defrost: (0 to 255min) sets the maximum time between the
end of defrost and the restarting of the real room temperature display.
Fdt Drip time: (0 to 120min) time interval between reaching defrost termination
temperature and the restoring of the control’s normal operation. This time allows the
evaporator to eliminate water drops that might have formed due to defrost.
Hon Heating elements on after dripping phase: (0.0 to 24h00min, res. 10 min) the heating
elements stay on for this time after finishing the dripping phase.
dPo First defrost after start-up: (n; Y) n = after the idF time or following RTC, 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.
FANS
FnC Fans operating mode: (C-n; o-n; C-Y; o-Y) C-n = runs with the compressor, OFF
during defrost; o-n = continuous mode, OFF during defrost; C-Y = runs with the
compressor, ON during defrost; o-Y = continuous mode, ON during defrost.
Fnd Fans delay after defrost: (0 to 255min) interval between the end of a defrost and the
next evaporator fans start.
FCt Temperature differential to avoid fan short cycles: (0 to 59°C; 0 to 90°F) (N.B.:
FCt=0 means function disabled) if the difference of temperature between the
evaporator and the room probes is higher than FCt value, the fans will be switched on.
FSt Fans stop temperature: (-50 to 50°C; -55 to 122°F) setting of temperature, detected
by evaporator probe, above which fans are always OFF.
Fon Fan ON time: (0 to 15min) with Fnc=C_n or C_Y, (fan activated in parallel with
compressor) it sets the evaporator fan ON cycling time when the compressor is off.
With Fon=0 and FoF≠0 the fan are always off, with Fon=0 and FoF=0 the fan are
always off.
FoF Fan OFF time: (0 to 15min)
With FnC=C_n or C_Y, (fan activated in parallel with compressor) it sets the evaporator
fan off cycling time when the compressor is off.
With Fon=0 and FoF≠0 the fan are always off, with Fon=0 and FoF=0 the fan are
FAP Probe selection for fan management: (nP; P1; P2; P3; P4) nP = no probe;
P1 =thermostat probe; P2 = evaporator probe; P3 =configurable probe; P4 = Probe on
Hot Key plug.
ALARMS
ALP Probe selection for alarm: (nP; P1; P2; P3; P4) nP = no probe, the temperature
alarms are disabled; P1 = Probe 1 (Thermostat probe); P2 = Probe 2 (evaporator
probe);
P3 = Probe 3 (display probe); P4 = Fourth probe.
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ALC Temperature alarms configuration: (Ab; rE) Ab = absolute temperature, alarm
power on and alarm signalling.
= inverter compressor;
CMP = ONOFF compr
essor; nu=not used.
temperature is reached the
LA2 alarm is signalled, possibly after the Ad2 delay.
temperature is reached the
HA2 alarm is signalled, possibly after the
Ad2 delay. AH2 Differential for temperature condens
er alarm recovery:
0.1 to 25.5°C; 1 to 45°F
activation.
activation.
the holiday times.
dSE Energy Saving cycle length on holidays
: 0 to
24h00min
.
dP2 Evaporator probe display
.
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: [-100°C to ALU; -148 to ALU]
If ALC=rE: [0.0 to 50.0°C or 0 to 90°F]
when this temperature is reached the alarm is enabled, after the Ald delay time.
AFH Differential for temperature alarm recovery: (0.1 to 25.5°C; 1 to 45°F) intervention
differential for recovery of temperature alarm.
Ald Temperature alarm delay: (0 to 255 min) time interval between the detection of an
alarm condition and alarm signalling.
dAo Exclusion of temperature alarm at start-up: (0.0 to 24h00min, res. 10min) time
interval between the detection of the temperature alarm condition after instrument
CONFIGURABLE RELAYS
oA0 Relay 1 configuration (7-8): (dEF; Fan; Alr; LiG; AUS; onF; db; CP2; dEF2; HES; Het;
inV, CMP, nu) dEF = defrost; Fan = do not select it; Alr = alarm; LiG = light; AUS =
Auxiliary relay; onF = always on with instrument on; db = neutral zone; CP2 = second
compressor output; dF2 = do not select it; HES = night blind; Het = heater output; inV
= inverter compressor; CMP = ONOFF compressor; nu=not used.
oA1 Relay 2 configuration (4-5-6): (dEF; Fan; Alr; LiG; AUS; onF; db; CP2; dEF2; HES;
Het; inV, CMP, nu) dEF = defrost; Fan = do not select it; Alr = alarm; LiG = light; AUS
= Auxiliary relay; onF = always on with instrument on; db = neutral zone; CP2 = second
compressor output; dF2 = do not select it; HES = night blind; Het = heater output; inV
= inverter compressor; CMP = ONOFF compressor; nu=not used.
oA2 Relay 3 configuration (8-9): (dEF; Fan; Alr; LiG; AUS; onF; db; CP2; dEF2; HES; Het;
inV, CMP, nu) dEF = defrost; Fan = do not select it; Alr = alarm; LiG = light; AUS =
Auxiliary relay; onF = always on with instrument on; db = neutral zone; CP2 = second
compressor output; dF2 = do not select it; HES = night blind; Het = heater output; inV
oA3 Relay 4 configuration (10-11-12): (dEF; Fan; Alr; LiG; AUS; onF; db; CP2; dEF2;
HES; Het; inV, CMP, nu) dEF = defrost; Fan = do not select it; Alr = alarm; LiG = light;
AUS = Auxiliary relay; onF = always on with instrument on; db = neutral zone; CP2 =
second compressor output; dF2 = do not select it; HES = night blind; Het = heater
output; inV = inverter compressor; CMP = ONOFF compressor; nu=not used.
CONDENSER TEMPERATURE ALARM
AP2 Probe selection for temperature alarm of condenser: (nP; P1; P2; P3; P4)
nP = no probe; P1 = thermostat probe; P2 = evaporator probe; P3 = configurable
probe; P4 = Probe on Hot Key plug.
AL2 Low temperature alarm of condenser: (-100 to 150°C; -148 to 302°F) when this
Au2 High temperature alarm of condenser: (-100 to 150°C; -148 to 302°F) when this
Ad2 Condenser temperature alarm delay: (0 to 255 min) time interval between the
detection of the condenser alarm condition and alarm signalling.
dA2 Condenser temperature alarm exclusion at start up: 0.0 to 24h00min, res. 10min.
bLL Compressor off with low temperature alarm of condenser: (n; Y) n = compressor
keeps on working; Y = compressor is switched off till the alarm is present, in any case
regulation restarts after AC time at minimum.
AC2 Compressor off with high temperature alarm of condenser: (n; Y) n = compressor
keeps on working; Y = compressor is switched off till the alarm is present, in any case
regulation restarts after AC time at minimum.
DIGITAL INPUTS
i1P Digital input 1 polarity: (oP; CL) oP = the digital input is activated by opening the
contact; CL = the digital input is activated by closing the contact.
I1F Digital input 1 configuration: (EAL; bAL; dor; dEF; ES; AUS; Htr; HdF; onF; nt) EAL =
external alarm: “EA” message is displayed; bAL = serious alarm “CA” message is
displayed; dor = door switch function; dEF = activation of a defrost cycle; ES = energy
saving; AUS = auxiliary relay activation with oAx=AUS; Htr = type of inverting action
(cooling or heating); HdF =do not set it; onF = to switch the controller off; nt = to
change parameter map
i2P Digital input 2 input polarity: (oP; CL) oP = the digital input is activated by opening
the contact; CL = the digital input is activated by closing the contact.
I2F Digital input 2 configuration: (EAL; bAL; dor; dEF; ES; AUS; Htr; HdF; onF; nt) EAL =
external alarm: “EA” message is displayed; bAL = serious alarm “CA” message is
displayed; dor = door switch function; dEF = activation of a defrost cycle; ES = energy
saving; AUS = auxiliary relay activation with oAx=AUS; Htr = type of inverting action
(cooling or heating); HdF =do not set it; onF = to switch the controller off; nt = to
change parameter map
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
D2d Digital input 2 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
nPS Number of external BAL alarms before stopping regulation: (1 to 15) after nPS
activations of the ixF=BAL digital input the regulation will be stopped.
odC Compressor status when open door: (no; Fan; CPr; F_C) no = normal;
Fan = normal; CPr = compressor OFF, F_C = compressor OFF.
Rrd Outputs restart after door open alarm: (n; Y) n = outputs follow the odC parameter.
Y = outputs restart with a door open alarm.
HES Delta temperature during an Energy Saving cycle: (-30.0 to 30.0°C; -54 to 54°F) it
sets the increasing value of the set point [SET+HES] during the Energy Saving cycle.
CURRENT TIME AND WEEKLY HOLIDAYS (ONLY FOR MODELS WITH RTC)
Hur Current hour: 0 to 23h
Min Current minute: 0 to 59min
dAY Current day: Sun to Sat
Hd1 First weekly holiday: (Sun to Sat; nu) set the first day of the week which follows the
holiday times.
Hd2 Second weekly holiday: (Sun to Sat; nu) set the second day of the week which follows
N.B. Hd1,Hd2 can be set also as “nu” value (Not Used).
ENERGY SAVING TIMES (ONLY FOR MODELS WITH RTC)
iLE Energy Saving cycle start during workdays: (0 to 23h50min) during the Energy
Saving cycle the set point is increased by the value in HES so that the operation set
point is SET+HES.
dLE Energy Saving cycle length during workdays: (0 to 24h00min) sets the duration of
the Energy Saving cycle on workdays.
iSE Energy Saving cycle start on holidays: 0 to 23h50min.
DEFROST TIMES (ONLY FOR MODELS WITH RTC)
dd1…dd6 Daily defrost enabled: (n; Y) to enable the Ld1…Ld6 defrost operations for any
Ld1…Ld6 Workday defrost start: (0 to 23h50min) these parameters set the beginning of the
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
PbC Probe type: (ntC; PtC; Pt1) ntC = NTC probe; PtC = PTC probe; Pt1 = PT1000 probe
dPC Function linked to the defrost button: (AUS; dEF) AUS=to activate oAx=AUS output;
dP1 Thermostat probe display.
dP3 Third probe display.
SPd Actual speed in Hz (read only)
rSE Real set point: it shows the set point used during the energy saving cycle or during the
rEL Software release for internal use.
Ptb Parameter table code: readable only.
day of the week.
6 programmable defrost cycles during workdays. Ex: when Ld2=12.4 the second
defrost starts at 12.40 during workdays.
ModBUS compatible monitoring system.
dEF=to activate a manual defrost.
continuous cycle.
10. DIGITAL INPUTS
The first digital input (terminals 18-20) is enabled with P3P=n.
With P3P=n and i1F=i2F the second digital input is disabled.
The free voltage digital inputs are programmable by the i1F and i2F parameters.
10.1 GENERIC ALARM (ixF = 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 deactivated.
10.2 SERIOUS ALARM MODE (ixF = 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 deactivated.
10.3 DOOR SWITCH INPUT (ixF = 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 doA, the door alarm is
enabled, the display shows the message dA and the regulation restarts is rtr=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.
10.4 START DEFROST (ixF = dEF)
It starts a defrost if there are the right conditions. After the defrost is finished, the normal regulation
will restart only if the digital input is disabled otherwise the instrument will wait until the MdF safety
time is expired.
10.5 SWITCH THE AUXILIARY RELAY (ixF = AUS)
With oA2=AUS the digital input switched the status of the auxiliary relay.
10.6 INVERSION OF THE KIND OF ACTION: HEATING-COOLING (ixF = Htr)
This function allows inverting the regulation of the controller: from cooling to heating and viceversa.
10.7 ENERGY SAVING (ixF = ES)
The Energy Saving function allows to change the set point value as the result of the [SET+HES]
(parameter) sum. This function is enabled until the digital input is activated.
10.8 ON OFF FUNCTION (ixF = onF)
Permits to switch the controller on and off.
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10.9 DIGITAL INPUTS POLARITY
Message
Cause Outputs
LA2 Condenser low temperature
It depends on the
bLL parameter
PoF Keyboard locked
[1 to 255°F]
[-148°F to SET]
[-21 to 21°F]
P4P Fourth probe presence
n=not present; Y=pres.
n
Pr2
[-21 to 21°F]
short cycle delay for second
CCt PULL DOWN duration
0.0 to 24h 00min, res.
10min 0.0 Pr2
[-148 to 302°F]
activation
The digital input polarity depends on the i1P and i2P parameters.
i1P or i2P=CL, the input is activated by closing the contact.
i1P or i2P=OP, the input is activated by opening the contact.
11. RS485 SERIAL LINE – FOR MONITORING SYSTEMS
The RS485 serial line allows connecting the instrument to a monitoring system (ModBUS-RTU
compatible) such as the X-WEB500/3000/300.
12. INSTALLATION AND MOUNTING
Instrument XRi77CX shall be mounted on vertical panel, in a
29x71 mm hole, and fixed using the special bracket supplied.
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 air circulate by the cooling holes.
13. ELECTRICAL CONNECTIONS
The instrument is provided with screw terminal block to connect cables with a cross section up to
2.5mm2. 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.
13.1 PROBE CONNECTION
The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid
infiltration. It is recommended to place the thermostat probe away from air streams to correctly
measure the average room temperature. Place the defrost termination probe among the evaporator
fins in the coldest place, where most ice is formed, far from heaters or from the warmest place during
defrost, to prevent premature defrost termination.
14. HOW TO USE THE HOT KEY
14.1 PROGRAM A HOT KEY FROM AN INSTRUMENT (UPLOAD)
1. Program one controller with the front keypad.
2. When the controller is ON, insert the “HOT-KEY” and push UP button; the “uPL” message
appears followed a by a flashing “End” label.
3. Push SET button and the “End” will stop flashing.
4. Turn OFF the instrument, remove the “HOT-KEY” and then turn it ON again.
NOTE: the “Err” message appears in case of a failed programming operation. In this case push
again button if you want to restart the upload again or remove the “HOT-KEY” to abort the operation.
14.2 PROGRAM AN INSTRUMENT BY USING A HOT KEY (DOWNLOAD)
1. Turn OFF the instrument.
2. Insert a pre-programmed “HOT-KEY” into the 5-PIN receptacle and then turn the Controller
ON.
3. The parameter list of the “HOT-KEY” will be automatically downloaded into the Controller
memory. The “doL” message will blink followed a by a flashing “End” label.
4. After 10 seconds the instrument will restart working with the new parameters.
5. Remove the “HOT-KEY”.
NOTE: the message “Err” is displayed for failed programming. In this case turn the unit off and then
on if you want to restart the download again or remove the “HOT-KEY” to abort the operation.
15. ALARM SIGNALS
P1 Room probe failure Compressor output acc. to par. Con and CoF
P2 Evaporator probe failure Defrost end is timed
P3 Third probe failure Outputs unchanged
P4 Fourth probe failure Outputs unchanged
HA Maximum temperature alarm Outputs unchanged.
LA Minimum temperature alarm Outputs unchanged.
HA2 Condenser high temperature It depends on the AC2 parameter
dA Door open Compressor restarts
EA External alarm Output unchanged.
CA Serious external alarm (ixF=bAL) All outputs OFF.
rtC Real time clock parameter error
rtF Real time clock malfunctioning Output unchanged. Defrost follows idF.
15.1 SILENCING BUZZER / ALARM RELAY OUTPUT
If tbA=Y, the buzzer and the relay are is silenced by pressing any key.
If tbA=n, only the buzzer is silenced while the alarm relay is on until the alarm condition recovers.
15.2 ALARM RECOVERY
Probe alarms “P1”, “P2” and “P3” 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 i2F=bAL) recover as soon as the digital input is disabled.
15.3 OTHER MESSAGES
Pon Keyboard unlocked.
Output unchanged. Defrost follows idF. Need
to set RTC parameters.
noP In programming mode: no parameter present in Pr1.
On the display or in dP2, dP3, dP4: the selected probe is not enabled.
16. TECHNICAL DATA
Housing: self-extinguishing ABS
Case: frontal 32x74mm; depth 60mm
Mounting: panel mounting in a 71x29mm panel cut-out
Protection: IP20
Frontal protection: IP65
Connections: Screw terminal block 2.5 mm2 wiring
Power supply: (according to the model)
Power absorption: 3VA max
Display: 3 digits, red LEDs, 14.2 mm high
Inputs: Up to 3 NTC probes
Digital inputs: free voltage contact
Frequency output: 30 to 200 Hz, 14Vdc MAX, duty cycle=50%
Relay outputs:
Defrost: SPDT 8(3)A, 250Vac
Fan/Heater: SPST 5(2)A, 250Vac
Light/Compressor2: SPST 8(3)A 250Vac
Data storing: on the non-volatile memory (EEPROM)
Internal clock back-up: 24 hours
Kind of action: 1B
Pollution degree: 2
Software class: A
Rated impulsive voltage: 2500V
Overvoltage Category: II
Operating temperature: 0 to 55°C (32 to 131°F)
Storage temperature: -30 to 85°C (-22 to 185°F)
Relative humidity: 20 to 85% (no condensing)
Measuring and regulation range:
Resolution: 0.1°C or 1°C or 1°F (selectable)
Accuracy (ambient temp. 25°C): ±0.7°C ±1 digit
24Vac, ±10%
230Vac 10%, 50/60Hz
110Vac 10%, 50/60Hz
Compressor: SPST 16A 250Vac
NTC probe: -40 to 110°C (-40 to 230°F)
PTC probe: -50 to 150°C (-55 to 302°F)
PT1000 probe: -100 to 200°C (-148 to 392°F)
17. WIRINGS
18. DEFAULT SETTING VALUES
Label
Set Set point LS to US -23°C - - -
HY Differential
LS Minimum set point
US Maximum set point
Ot Thermostat probe calibration
P2P Evaporator probe presence n=not present; Y=pres. n Pr1
oE Evaporator probe calibration
P3P Third probe presence n=not present; Y=pres. n Pr2
o3 Third probe calibration
o4 Fourth probe calibration
odS Outputs delay at start up 0 to 255 min 1 Pr2
AC Anti-short cycle delay 0 to 50 min 5 Pr1
Anti-
AC1
compressor
rtr P1-P2 percentage for regulation 0 to 100 (100=P1 , 0=P2) 100 Pr2
CCS PULL DOWN set point
Threshold for PULL DOWN
oHt
Compressor ON time with faulty
Con
probe
Compressor OFF time with
CoF
faulty probe
HY1 Differential for proportional band
Name Range Value Level
[0.1 to 25.5°C]
[-100.0°C to SET]
[SET to 150.0°C]
[SET to 302°F]
[-12.0 to 12.0°C]
[-21 to 21°F]
[-12.0 to 12.0°C]
[-21 to 21°F]
[-12.0 to 12.0°C]
[-12.0 to 12.0°C]
0 to 50 min 5 Pr1
[-100.0 to 150.0°C]
0.0 to 25.5°C 10.0 Pr1
0 to 255 min 30 Pr2
0 to 255 min 5 Pr2
[0.1 to 25.5°C]
[1 to 45°F]
1.0°C Pr1
-25°C Pr2
-20°C Pr2
1.0°C Pr1
0.0°C Pr2
0.0°C Pr2
0.0°C Pr2
-23°C Pr2
1.0 Pr1
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Label Name Range Value Level
after PULL DOWN
percentage)
CF Temperature measurement unit
°C; °F °C Pr2 rES Resolution
(only for °C)
in=integer; dE= dec.point
in
Pr1
termination
[-55 to 122°F]
Fdt Draining time
0 to 120 min
5
Pr2
Ab = absolute
condenser
alarm
[-148 to 302°F]
alarm
[-148 to 302°F]
temperature alarm
Label Name Range Value Level
d2d Digital input 2 alarm delay
0 to 255 min
10
Pr1
Adr Serial address
1 to 247 1 Pr2 dP1 Room probe display
-- -
Pr1
Ptb Map code
Read only
-
Pr2
Interval of time with fixed speed
tAP
Lower speed limit (in
PMi
Upper speed limit (in
PMA
percentage)
Speed variation when
voS
temperature increases
Speed variation when
vo2
temperature decreases
Interval of time with speed fixed
t1n
to PMi after start-up
Interval of time with speed fixed
t1F
to PMi before stopping
regulation
First interval of time (tAP) with
tP1
speed fixed after PULL DOWN
Second interval of time (tAP)
tP2
with speed fixed after PULL
DOWN
Interval of time to control
tC2
temperature deadlocks
SPi Speed in case of probe error PMi to PMA 60 Pr2
Speed during defrost (used in
Aod
case of hot gas defrost)
0 to 999 min 0 Pr2
0 to PMA 20 Pr2
PMi to 100% 80 Pr2
0 to 100 Hz 2 Pr2
0 to 100 Hz 1 Pr2
0 to 999 min 0 Pr2
0 to 999 min 0 Pr2
PMi to PMA 30 Pr2
PMi to PMA 30 Pr2
1 to 255 min 60 Pr2
PMi to PMA 80 Pr2
Lod Probe displayed P1; P2 P1 Pr2
dLY Display temperature delay 0.0 to 20min 00s, res. 10s 0.0 Pr2
dtr P1-P2 percentage for display 1 to 99 99 Pr2
tdF Defrost type EL=el. heater; in= hot gas in Pr1
Probe selection for defrost
dFP
dtE Defrost termination temperature
idF Interval between defrost cycles 1 to 120 hours 72 Pr1
MdF (Maximum) length for defrost 0 to 255 min 15 Pr1
dSd Start defrost delay 0 to 255 min 0 Pr2
StC Compressor stop befor defrost 0 to 30 min 5 Pr2
dFd Displaying during defrost rt, it, SEt, DEF it Pr2
nP; P1; P2; P3; P4 P2 Pr2
[-50.0 to 50.0°C]
4.0°C Pr1
dAd MAX display delay after defrost 0 to 255 min 120 Pr2
Heating elements on after
Hon
dripping phase
dPo First defrost after start-up n=after idF; Y=immediately n Pr2
Delay for defrost output
dAF
activation
FnC Fan operating mode C-n; o-n; C-Y; o-Y o-n Pr1
Fnd Fan delay after defrost 0 to 255 min 0 Pr1
Temperature differential to avoid
FCt
fan short cycles
FSt Fan stop temperature
Fon Fan on time with compressor off
FoF Fan off time with compressor off
Probe selection for fan
FAP
management
0 to 24h 00min, res. 10min 0.0 Pr2
0 to StC 2.0 Pr2
0 to 59°C
0 to 90°F
[-50.0 to 50.0°C]
[-55 to 122°F]
0 to 15 min 0 Pr2
0 to 15 min 0 Pr2
0 Pr2
50°C Pr1
nP; P1; P2; P3; P4 nP Pr2
ALP Alarm probe selection nP; P1; P2; P3; P4 P1 Pr2
ALC Temperat. alarms configuration
ALU MAXIMUM temperature alarm
ALL Minimum temperature alarm
Differential for temperat. alarm
AFH
recovery
ALd Temperature alarm delay 0 to 255 min 150 Pr2
Delay of temperature alarm at
dAo
start up
Probe for temperat. alarm of
AP2
Condenser for low temperat.
AL2
Condenser for high temperat.
AU2
Differ. for condenser temp. alar.
AH2
recovery
Condenser temperature alarm
Ad2
delay
Delay of cond. temper. alarm at
dA2
start up
Compr. off for condenser low
bLL
temperature alarm
Compr. off for condenser high
AC2
oA0 Relay 1 configuration (7-8)
oA1 Relay 2 configuration (4-5-6)
rE= related to set;
[ALL to 150.0°C]
[ALL to 302°F]
[-100.0°C to ALU]
[-148°F to ALU]
[0.1°C to 25.5°C]
[1°F to 45°F]
rE Pr2
8.0°C Pr1
7.0°C Pr1
1.0°C Pr2
0.0 to 24h00min, res. 10min 24.0 Pr2
nP; P1; P2; P3; P4 P4
[-100 to 150°C]
[-100 to 150°C]
[0.1 to 25.5°C]
[1 to 45°F]
-40
110
5
0 to 254 min, 255(nu) 15
0.0 to 24h00min, res. 10 min 1.3
n; Y n
n; Y n
dEF; FAn; ALr; LiG; AUS; onF;
db; CP2; dF2; HES; HEt; CMP,
inV; nu
dEF; FAn; ALr; LiG; AUS; onF;
db; CP2; dF2; HES; HEt; CMP,
inV; nu
inV Pr2
dEF Pr2
oA2 Relay 3 configuration (8-9)
oA3 Relay 4 configuration (10-11-12)
i1P Digital input polarity (18-20) oP; CL CL Pr1
i1F Digital input 1 configuration
i2P Digital input polarity oP; CL CL Pr2
i2F Digital input configuration
did Digital input 1 alarm delay 0 to 255 min 0 Pr1
Number of activation of the
nPS
digital input before activating
pressure alarm
Compress and fan status when
odC
open door
Regulation restart with door
rrd
open alarm
HES Differential for Energy Saving
dEF; FAn; ALr; LiG; AUS; onF;
db; CP2; dF2; HES; HEt; CMP,
inV; nu
dEF; FAn; ALr; LiG; AUS; onF;
db; CP2; dF2; HES; HEt; CMP,
inV; nu
EAL; bAL; dor; dEF; ES; AUS;
Htr; FAn; HdF; onF; nt
EAL; bAL; dor; dEF; ES; AUS;
Htr; FAn; HdF; onF; nt
0 to 15 15 Pr1
no; FAn; CPr; F_C no Pr2
n; Y n Pr2
[-30.0 to 30.0°C]
[-54 to 54°F]
HEt Pr2
LiG Pr2
dor Pr1
EAL Pr2
0.0°C Pr2
dP2 Evaporator probe display -- - Pr1
dP3 Third probe display -- - Pr1
SPd Frequency output (in Hz) Read only - Pr1
rSE Real set Read only - Pr2
rEL Software release Read only - Pr2
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