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Technical and Service manual
Inventus upright refrigerators and freezers
C&F
Rev. 201405
Technical and Service manual
Inventus upright refrigerators and freezers
Contents
User manual - Control unit XW70K and D50K
4
Wiring diagram C
14
Wiring diagram F
15
Troubleshooting
16
Fan motor
20
Evaporator
21
Cleaning the condenser filter
22
Probes, P1 temperature probe
23
Probes, P2 defrost probe
24
Probes, P3 condenser probe
24
How to change the hinging of the solid door
26
EC-declaration of conformity for electrical equipment
30
2
Porkka reserves the right to make product alterations at any time and can not be held responsible for any printing errors or omissions.
Technical and Service manual
Inventus upright refrigerators and freezers
3
Porkka reserves the right to make product alterations at any time and can not be held responsible for any printing errors or omissions.
Technical and Service manual
Inventus upright refrigerators and freezers
User manual - Control unit XW70K AND D50K
3.4.2 Timed activation of the fans when the compressor is off.
XW70K AND D50K
1
When FnC=C-n or C-Y (fans in parallel to the compressor), the fans will be able to carry out on and off
cycles even if the compressor is switched off. The on and off interval of time follow the Fon and FoF
parameters. When the compressor is stopped the fans will go on working for the Fon time. On the
other side, with Fon=0 the fans will stay always off when the compressor is off.
GENERAL WARNING
1.1 PLEASE READ BEFORE USING THIS MANUAL
4

By means of the parameter oA4 (28-29) it’s possible to configure the functions of the TRIAC output, as
described in the following paragraphs:


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.
4.1 ON –OFF OUTPUT (DEAFALUT SETTING OA4 = ONF)
By setting oA4 =onF, the TRIAC will operate as “on-off”: it will be activated when the controller is
switched on and it will be switched off when the controller is in stand-by status.
1.2 SAFETY PRECAUTIONS









2
4.2 LIGHT OUTPUT (OA4 = LIG)
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.
By setting oA4=Lig the TRIAC will work as light, it is switched on and off by the light button on the
keyboard and is affected by status of the digital input when i1F=dor.
The parameter LHt (Light timer) sets the time the light will stay on after pressing the light switch on
the keyboard. Every time the key is pushed the timer is re-loaded.
4.3 SECOND COMPRESSOR MANAGEMENT (OA4 = CP2)
By setting oA4 =CP2, the correspondent TRIAC will operate as “second compressor”. It will be
activated in parallel with the first compressor, with a possible delay set in the AC1 parameter
(seconds). Both the compressors are switched off at the same time.
4.4 AUXILIARY OUTPUT (OA4 = AUS)
By setting oA4 =AUS, the TRIAC will work as auxiliary thermostat (ex. anti condensing heater).
Parameters involved:
ACH (cL, Ht): Kind of regulation for the auxiliary output : Ht = heating / CL = cooling;
SAA (-50÷150) Set point for auxiliary output
SHy (0÷25.5°C) Differential for auxiliary output.
With ACH = CL: aux output cut in is SAA+SHy, cut out SAA.
With ACH = Ht: aux output cut in is SAA-SHy, cut out SAA.
ArP (nP, P1, P2, P3, P4) Probe for auxiliary output
Sdd (n, Y) Auxiliary output working during defrost
GENERAL DESCRIPTION
Model XW70K is microprocessor based controller suitable for applications on medium or low
temperature refrigerating units. It has to be connected by means of a two-wire shielded twisted cable
( 1mm) at a distance of up to 30 meters to the keyboard T620T or T620 or V620 or CX620. It is
provided with four relay outputs to control compressor, defrost - which can be either electrical or hot
gas - the evaporator fans and light. It is also provided with 4 NTC or PTC probe inputs, one for
temperature control, one to control the defrost end temperature of the evaporator and the third and
fourth to control condenser temperature or to display another temperature.
The HOT KEY output allows to connect the unit, by means of the external module XJ485-CX, to a
network line ModBUS-RTU compatible such as the dIXEL monitoring units of X-WEB family. It
allows to program the controller by means the HOT KEY programming keyboard.
The instrument is fully configurable through special parameters that can be easily programmed
through the keyboard.
3
SPECIAL FUNCTIONS
4.5 ALARM OUTPUT (OA4 = ALR)
By setting oA4 = ALr the correspondent output will work as alarm, it is switched on when an alarm
happens.
Parameters involved:
tbA (n, y) Alarm output silencing
AoP (cL; oP) Alarm output polarity
4.6 NEUTRAL ZONE (OA4 = DB)
CONTROLLING LOADS
By setting oA4 =db the controller will perform a
“neutral zone” regulation.
The heating element has to be connected to the
correspondent relay.
If the temperature increases and reaches set
point plus differential (HY) the compressor is
started and then turned off when the
temperature reaches the set point value again.
If the temperature decreases and reaches the
set point minus differential (HY) the output
(heater) is switched on and then turned OFF
when the temperature reaches again the set
point.
3.1 THE 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.
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.
3.2 FAST FREEZING
When defrost is not in progress, it can be activated by holding the UP key pressed for about 3 sec.
The compressor operates to maintain the CCS set point for the time set through the CCt parameter.
The cycle can be terminated before the end of the set time using the same activation key UP for 3 sec.
3.3 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).
Two defrost modes are available through the tdF parameter: defrost through electrical heater (tdF =
EL) and hot gas defrost (tdF = in).
A defrost starts after elapsing the idF time.
Other parameters are used to control defrost cycles: its maximum length (MdF) and two defrost
modes: timed or controlled by the evaporator’s probe.
At the end of defrost dripping time is started, its length is set in the Fdt parameter. With Fdt=0 the
dripping time is disabled.
3.4 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 for fans
This function, managed by the FCt parameter, is designed to avoid short cycles of fans, that could
happen when the controller is switched on or after a defrost, when the room air warms the evaporator.
If the difference between the evaporator temperature and the room temperature is higher than the FCt
value, the controller will activate the fans. This function is disabled if FCt=0.
1598027800 XW70K GB PKK R1.0 10.12.2013doc.docx
XW70K
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Porkka reserves the right to make product alterations at any time and can not be held responsible for any printing errors or omissions.
Technical and Service manual
Inventus upright refrigerators and freezers
User manual - Control unit XW70K AND D50K
5
KEYBOARD
°C/°F
6
ON
Light on
ON
ON
Auxiliary relay on (CX620 only)
Measurement unit (CX620 only)
CONTROLLER INTERFACE
6.1 HOW TO SEE THE MIN TEMPERATURE
1.
2.
3.
Press and release the DOWN key.
The “Lo” message will be displayed followed by the minimum temperature recorded.
By pressing the DOWN key or waiting for 5 sec the normal display will be restored.
6.2 HOW TO SEE THE MAX TEMPERATURE
1.
2.
3.
Press and release the UP key.
The “Hi” message will be displayed followed by the maximum temperature recorded.
By pressing the UP key or waiting for 5 sec the normal display will be restored.
6.3 HOW TO RESET THE MAX AND MIN TEMPERATURE RECORDED
To reset the stored temperature, when max or min temperature is displayed:
1. Press SET key until “rST” label starts blinking.
Note: after the installation remember to RESET the temperature stored.
6.4 HOW TO SEE AND MODIFY THE SET POINT
1.
2.
3.
Push and immediately release the SET key: the display will show the Set point value;
To change the SEt value, push the UP or DOWN arrows within 10 sec.
To memorise the new set point value push the SET key again or wait for 10 sec.
6.5 TO START A MANUAL DEFROST
1.
Push the DEF key for more than 2 sec and a manual defrost will start.
6.6 TO ENTER IN PARAMETERS LIST “PR1”
To enter the parameter list “Pr1” (user accessible parameters) operate as follows:
1.
Enter the Programming mode by pressing the Set and DOWN key
start blinking).
for few seconds (
and
2.
The instrument will show the first parameter present in “Pr1”
+
6.7 THE HIDDEN MENU
In the hidden menu there are all the parameters of the instrument.
To display and modify target set point; in programming mode it selects a parameter
or confirm an operation. By holding it pressed for 3 sec when max or min
temperature is displayed it will be erased.
(UP) To see the max stored temperature; in programming mode it browses the
parameter codes or increases the displayed value.
By holding it pressed for 3s the fast freezing cycle is started.
(DOWN) To see the min stored temperature; in programming mode it browses the
parameter codes or decreases the displayed value.
6.7.1 ENTERING THE HIDDEN MENU
1. Enter the Programming mode by pressing the SET+DOWN keys for 3 sec (the “°C” or “°F” LED will
start blinking).
2. Release the keys and then push again the SET+DOWN keys more than 7 sec. The “Pr2” label will
be displayed immediately, followed from the HY parameter.
NOW THE HIDDEN MENU IS DISPLAYED
3. Select the required parameter.
4. Press SET key to display its actual value
5. Use UP or DOWN keys to change its value.
6. Press SET to store the new value and move to the following parameter.
To exit: Press SET+UP or wait for 15 sec without pressing any key.
(DEF) By holding it pressed for 3 sec the defrost is started.
NOTE1: if no parameter is present in the “Pr1” level, after the first 3 sec the “noP” message will be
displayed. Keep SET+DOWN keys pushed till the “Pr2” message will be displayed.
(ONOFF) Switch ON and OFF the instrument.
NOTE2: the new set value will be stored even if the procedure is exited by waiting for the time-out to
expire.
6.7.2 HOW TO: MOVE A PARAMETER FROM THE HIDDEN MENU TO THE FIRST LEVEL AND
VICEVERSA.
KEY COMBINATIONS
+
To lock and unlock the keyboard.
+
To enter the programming mode.
+
To exit the programming mode.
Each parameter present in the HIDDEN MENU can be moved or put into “THE FIRST LEVEL” (user
level) by pressing SET+DOWN keys. In HIDDEN MENU, if a parameter is present also in the First
Level (Pr1), the decimal point will be lit.
6.7.3 HOW TO CHANGE THE PARAMETER VALUE
1. Enter the Programming mode.
2. Select the required parameter with UP or DOWN.
3. Press the “SET” key to display its value (
and
LED starts 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 for 15 sec without pressing any key.
NOTE: the new programming is stored even when the procedure is exited by waiting the time-out.
5.1 USE OF LEDS
Each LED function is described in the following table.
LED
MODE
ON
FLASHING
ON
FLASHING
ON
FLASHING
ON
ON
ON
ON
6.8 HOW TO LOCK THE KEYBOARD (MANUALLY)
Function
The compressor is running
- Programming Phase (flashing with LED
- Anti-short cycle delay enabled
The fan is running
Programming Phase (flashing with LED
The defrost is enabled
Drip time in progress
1.
)
Keep the UP and DOWN keys pressed together for more than 3 sec the UP and
DOWN keys.
The “PoF” message will be displayed and the keyboard is locked. At this point it is
only possible the viewing of the set point or the MAX o Min temperature stored and
to switch ON and OFF the light, the auxiliary output and the instrument.
2.
+
)
TO UNLOCK THE KEYBOARD
Keep the UP and DOWN keys pressed together for more than 3 sec.
The Fast Freezing cycle is enabled
- ALARM signal
- In “Pr2” indicates that the parameter is also present in “Pr1”
Continuous cycle is running
Energy saving enabled
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XW70K
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Porkka reserves the right to make product alterations at any time and can not be held responsible for any printing errors or omissions.
Technical and Service manual
Inventus upright refrigerators and freezers
User manual - Control unit XW70K AND D50K
dPo
dAF
6.9 ON/OFF FUNCTION (STAND BY)
By pushing the ON/OFF key, the instrument shows “OFF” for 5 sec. and the ON/OFF LED
is switched ON.
During the OFF status, all the relays are switched OFF and the regulations are stopped; if
a monitoring system is connected, it does not record the instrument data and alarms.
When the instrument is in stand by the keyboard displays “oFF”.
FANS
FnC
N.B. During the OFF status the Light and AUX buttons are active.
Fnd
6.10 TO SEE THE PROBE VALUES
1.
2.
Enter in “Pr1” level.
Parameters “dP1”, “dP2”, “dP3” and “dP4” display the value of probes 1, 2, 3 and 4.
7
PARAMETER LIST
FCt
FSt
REGULATION
HY
LS
US
ot
P2P
oE
P3P
o3
P4P
o4
odS
AC
AC1
rtr
CCt
CCS
Con
CoF
Fon
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.
Minimum set point: (-55°C to SET; -67°F to SET) sets the minimum value for the set
point.
Maximum set point: (SET to 150°C; SET to 302°F) set the maximum value for set point.
Thermostat probe calibration: (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible
offset of the thermostat probe. Terminals 1-2.
Second probe presence: (n; Y) n = not present, the defrost stops by time;
Y = present, the defrost stops by temperature. Terminals 2-3
Second probe calibration: (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible offset
of the second probe. Terminals 2-3.
Third probe presence (P3): (n; Y) n = not present, Y = present. Terminals 4-5
Third probe calibration (P3): (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible
offset of the third probe. Terminals 4-5
Fourth probe presence: (n; Y) n = Not present; Y = present. Terminals 5-6
Fourth probe calibration: (-12.0 to 12.0°C; -21 to 21°F) allows to adjust possible offset
of the fourth probe. Terminals 5-6
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.
Anti-short cycle delay: (0 to 50min) minimum interval between the compressor stop and
the following restart.
2nd compressor delay at start up (0÷255s) Used only with oA3 or oA4 = cP2 Time
interval between the switching on of the first compressor and the second one.
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, as
for the following formula (rtr(P1-P2)/100 + P2).
Compressor ON time during continuous cycle: (0.0 to 24h00min, res. 10min) allows to
set the length of the continuous cycle. Compressor stays on without interruption during
CCt time. This is useful, for instance, when the room is filled with new products.
Set point for continuous cycle: (-55 to 150°C; -67 to 302°F) it sets the set point used
during the continuous cycle.
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.
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.
FoF
FAP
rES
rEd
dLY
dtr
ACH
SAA
SHY
ArP
Sdd
dtE
idF
MdF
dSd
dFd
dAd
Fdt
ALP
ALC
ALU
ALL
AFH
Temperature measurement unit: (°C; °F) °C = Celsius; °F = Fahrenheit.
WARNING: When the measurement unit is changed the SET point and the values of
the parameters related to the temperature have to be checked and modified (if
necessary).
Resolution (for °C): (in=1°C; dE=0.1°C) allows decimal point display.
Probe display (P1; P2, P3, P4, SET, dtr) it selects which probe is displayed by the
controller. P1 = Thermostat probe; P2 = Second probe; P3 = Third probe; P4 = Fourth
probe, SET = set point;
dtr = percentage of visualization.
Display delay: (0 to 20min00s; res. 10s) when the temperature increases, the display
is updated of 1°C or 1°F after this time.
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).
ALd
dot
dAo
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; P3 = Probe 3; P4 = Fourth
probe.
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.
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.
Minimum temperature alarm:

If ALC=Ab: [-55°C to ALU; -67 to ALU]

If ALC=rE: [0.0 to 50.0°C or 0 to 90°F]
when this temperature is reached the alarm is enabled, after the ALd delay time.
Differential for temperature alarm recovery: (0.1 to 25.5°C; 1 to 45°F) intervention
differential for recovery of temperature alarm.
Temperature alarm delay: (0 to 255 min) time interval between the detection of an alarm
condition and alarm signalling.
Temperature alarm delay, with door open: (0 to 255 min) time interval between the
detection of temperature alarm condition and alarm signaling with door open.
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 power on and
alarm signalling.
CONDENSER TEMPERATURE ALARM
AP2
AL2
Au2
Defrost type: (EL; in) EL = electrical heater; in = hot gas.
Probe selection for defrost termination: (nP; P1; P2; P3; P4) nP = no probe;
P1 =thermostat probe; P2 = Second probe; P3 =Third probe; P4 = Fourth Probe
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.
Interval between defrost cycles: (0 to 120hours) determines the interval of time
between two defrost cycles.
(Maximum) length for defrost: (0 to 255min) when P2P = nP, (not evaporator probe:
timed defrost) it sets the defrost duration. When P2P different from nP (defrost end
based on temperature) it sets the maximum length for defrost.
Start defrost delay: (0 to 99min) this is useful when different defrost start times are
necessary to avoid overloading the plant.
Temperature displayed during defrost: (rt; it; SEt; dEF) rt = real temperature;
it = temperature at defrost start; SEt = set point; dEF = “dEF” label.
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.
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.
1598027800 XW70K GB PKK R1.0 10.12.2013doc.docx
Kind of regulation for auxiliary output: (Ht; CL) Ht = heating; CL = cooling.
Set Point for auxiliary output: (-55.0 to 150.0°C; -67 to 302°F) it defines the room
temperature set point to switch auxiliary output.
Differential for auxiliary output: (0.1 to 25.5°C; 1 to 45°F) intervention differential for
auxiliary output set point.

ACH=CL, AUX Cut in is [SAA+SHY]; AUX Cut out is SAA.

ACH=Ht, AUX Cut in is [SAA–SHY]; AUX Cut out is SAA.
Probe selection for auxiliary: (nP; P1; P2; P3; P4) nP = no probe, the auxiliary output is
switched only by the digital input; P1 = Probe 1 (Thermostat probe); P2 = Probe 2; P3 =
Probe 3; P4 = Probe 4.
Auxiliary output off during defrost: (n; Y) n = the auxiliary output operates during
defrost. Y = the auxiliary output is switched off during defrost.
ALARMS
DEFROST
tdF
dFP
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.
Fans delay after defrost: (0 to 255min) interval between end of defrost and evaporator
fans start.
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.
Fans stop temperature: (-55 to 50°C; -67 to 122°F) setting of temperature, detected by
evaporator probe, above which fans are always OFF.
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.
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 always
off.
Probe selection for fan management: (nP; P1; P2; P3; P4) nP = no probe;
P1 =thermostat probe; P2 = Second probe; P3 =Third probe; P4 =Fourth probe.
OA4 = AUS: AUXILIARY THERMOSTAT CONFIGURATION (terms. 28-29)
DISPLAY
CF
First defrost after start-up: (n; Y) n = after the idF time, Y = immediately.
Defrost delay after continuous cycle: (0.0 to 24h00min, res. 10min) time interval
between the end of the fast freezing cycle and the following defrost related to it.
AH2
Ad2
dA2
bLL
AC2
Probe selection for temperature alarm of condenser: (nP; P1; P2; P3; P4)
nP = no probe; P1 = thermostat probe; P2 = second probe; P3 = Third probe; P4 = Fourth
probe.
Low temperature alarm of condenser: (-55 to 150°C; -67 to 302°F) when this
temperature is reached the LA2 alarm is signalled, possibly after the Ad2 delay.
High temperature alarm of condenser: (-55 to 150°C; -67 to 302°F) when this
temperature is reached the HA2 alarm is signalled, possibly after the Ad2 delay.
Differential for temperature condenser alarm recovery: 0.1 to 25.5°C; 1 to 45°F.
Condenser temperature alarm delay: (0 to 255 min) time interval between the detection
of the condenser alarm condition and alarm signalling.
Condenser temperature alarm exclusion at start up: 0.0 to 24h00min, res. 10min.
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.
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.
RELAY OA3 (22-23) CONFIGURATION
tbA
oA4
Alarm relay silencing (with oAx =ALr): (n; Y) n = silencing disabled: alarm relay stays
on till alarm condition lasts. Y = silencing enabled: alarm relay is switched OFF by
pressing a key during an alarm.
TRIAN output configuration, terminals 28-29: (dEF; FAn; ALr; LiG; AUS; onF; db;
dEF2; HES) dEF = defrost; FAn = Fan; ALr = alarm; LiG = light; AUS = Auxiliary relay;
onF = always on with instrument on; db = neutral zone; dEF2 = do not select it; HES =
night blind.
XW70K
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6
Porkka reserves the right to make product alterations at any time and can not be held responsible for any printing errors or omissions.
Technical and Service manual
Inventus upright refrigerators and freezers
User manual - Control unit XW70K AND D50K
AoP
Alarm relay polarity: (CL; oP) it set if the alarm relay is open or closed when an alarm
occurs. CL = terminals closed during an alarm; oP = terminals open during an alarm.
8.6 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.
DIGITAL INPUT
i1P
i1F
did
I2P
I2F
d2d
nPS
odC
rrd
LES
HES
First digital input polarity: (oP; CL) oP = the digital input is activated by opening the
contact; CL = the digital input is activated by closing the contact.
First digital input configuration: (EAL; bAL; PAL; dor; dEF; ES; AUS; Htr; FAn; HdF;
onF; Sbt) EAL = external alarm: “EA” message is displayed; bAL = serious alarm “CA”
message is displayed; PAL = pressure switch alarm, “CA” message is displayed; dor =
door switch function; dEF = activation of a defrost cycle; AUS = auxiliary output activation
with oA4=AUS; Htr = type of inverting action (cooling or heating); FAn = fan; ES = energy
saving; HdF = Holiday defrost (enable only with RTC); onF = to switch the controller off;
LHt = to activate the light.
Digital input 1 alarm delay: (0 to 255 min) delay between the detection of the external
alarm condition and its signalling.
When i1F= PAL, it is the interval of time to calculate the number of pressure switch
activation.
Second digital input polarity: (oP; CL) oP = the digital input is activated by opening the
contact; CL = the digital input is activated by closing the contact.
Second digital input configuration: (EAL; bAL; PAL; dor; dEF; ES; AUS; Htr; FAn; HdF;
onF; Sbt) EAL = external alarm: “EA” message is displayed; bAL = serious alarm “CA”
message is displayed; PAL = pressure switch alarm, “CA” message is displayed; dor =
door switch function; dEF = activation of a defrost cycle; AUS = auxiliary relay activation
with oA3=AUS; Htr = type of inverting action (cooling or heating); FAn = fan; ES = energy
saving; HdF = Holiday defrost (enable only with RTC); onF = to switch the controller off;
LHt = to activate the light.
Digital input 2 alarm delay: (0 to 255 min) delay between the detection of the external
alarm condition and its signalling.
When i2F= PAL, it is the interval of time to calculate the number of pressure switch
activation.
Number of pressure switch activation: (0 to 15) Number of activation, during the did or
d2d interval, before signalling an alarm event (i1F, i2F=PAL).
If the nPS activation during did or d2d time is reached, switch off and on the instrument to
restart normal regulation.
Compressor status when open door: (no; FAn; CPr;F_C;) no = normal;
FAn = normal; CPr = compressor OFF, F_C = compressor OFF.
Outputs restart after door open alarm: (n; Y) n = outputs follow the odC parameter.
Y = outputs restart with a door open alarm.
Light off during Energy Saving status: n; Y.
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.
8.7 KIND OF ACTION: HEATING OR COOLING (I1F = HTR)
This function allows to invert the regulation of the controller: from cooling to heating and viceversa.
8.8 ENERGY SAVING (I1F = 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.
8.9 DIGITAL INPUTS POLARITY
The digital input polarity depends on the i1P or i2P parameters:
i1P or i2P=CL: the input is activated by closing the contact.
i1P or i2P =OP: the input is activated by opening the contact
9
INSTALLATION AND MOUNTING
D50K keyboard shall be mounted on vertical panel, and fixed using two columns according to the
following dimensions.
OTHER
Adr
PbC
onF
dP1
dP2
dP3
dP4
rSE
rEL
Ptb
8
Serial address: (1 to 247) identifies the instrument address when connected to a
ModBUS compatible monitoring system.
Type of probe: (PtC; ntC) it allows to set the kind of probe used by the instrument:
PtC = PTC probe; ntC = NTC probe.
On/Off key enabling: (nU; oFF; ES) nU = disabled; oFF = enabled; ES = not set it.
Thermostat probe display.
Second probe display.
Third probe display.
Fourth probe display (only for XW60LT models).
Real set point: it shows the set point used during the energy saving cycle or during the
continuous cycle.
Software release for internal use.
Parameter table code: readable only.
The controller XW70K shall be mounted in a din rail
It must be connected to the keyboard by means of a two-wire cable ( 1mm). The temperature range
allowed for correct operation is 0 to 60°C. Avoid places subject to strong vibrations, corrosive gases,
excessive dirt or humidity. The same recommendations apply to probes. Let the air circulate by the
cooling holes.
9.1 XW70K – 8 DIN CASE - DIMENSIONS
DIGITAL INPUT
The free voltage digital inputs are programmable in different configurations by the i1F or i2F
parameters.
8.1 DOOR SWITCH INPUT ( DOR)
It signals the door status and the corresponding relay output status through the odC parameter: no =
normal (any change); Fan = Fan OFF; CPr = Compressor OFF; F_C = Compressor and fan OFF.
Since the door is opened, after the delay time set through parameter did, the door alarm is enabled,
the display shows the message “dA” and the regulation restarts is rtr = yES. The alarm stops as
soon as the external digital input is disabled again. With the door open, the high and low temperature
alarms are disabled.
10 ELECTRICAL CONNECTIONS
XW70K is provided with screw terminal blocks to connect cables with a cross section up to 2.5 mm2 for
the RS485 (optional) and the keyboard. To connect the other inputs, power supply and relays, XW70K
is provided with Faston connections (6.3mm). Heat-resistant cables have to be used. Before
connecting cables make sure the power supply complies with the instrument’s requirements. Separate
the probe cables from the power supply cables, from the outputs and the power connections. Do not
exceed the maximum current allowed on each relay, in case of heavier loads use a suitable external
relay.
NOTE: the maximum current allowed for all the loads is 20A.
8.2 GENERIC ALARM ( EAL)
As soon as the digital input is activated the unit will wait for did time delay before signalling the “EAL”
alarm message. The outputs status doesn’t change. The alarm stops just after the digital input is deactivated.
8.3 SERIOUS ALARM MODE (BAL)
When the digital input is activated, the unit will wait for did delay before signalling the “CA” alarm
message. The relay outputs are switched OFF. The alarm will stop as soon as the digital input is deactivated.
10.1 PROBE CONNECTIONS
The probes shall be mounted with the bulb upwards to prevent damages due to casual liquid
infiltration. It is recommended to place the thermostat probe away from air streams to correctly
measure the average room temperature. Place the defrost termination probe among the evaporator
fins in the coldest place, where most ice is formed, far from heaters or from the warmest place during
defrost, to prevent premature defrost termination.
8.4 PRESSURE SWITCH (PAL)
If during the interval time set by did parameter, the pressure switch has reached the number of
activation of the nPS parameter, the “CA” pressure alarm message will be displayed. The compressor
and the regulation are stopped. When the digital input is ON the compressor is always OFF. If the
nPS activation in the did time is reached, switch off and on the instrument to restart normal
regulation.
11 TTL/RS485 SERIAL LINE
The TTL connector allows, by means of the external module TTL/RS485 (XJ485CX), to connect the
unit to a network line ModBUS-RTU compatible as the dIXEL monitoring system. The same TTL
connector is used to upload and download the parameter list of the “HOT-KEY”.
8.5 AUXILIARY OUTPUT SWITCHING (AUS)
With oA1 or oA2 or oA3=AUS and i1F or i2F=AUX it switches the correspondent relay.
1598027800 XW70K GB PKK R1.0 10.12.2013doc.docx
XW70K
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Porkka reserves the right to make product alterations at any time and can not be held responsible for any printing errors or omissions.
Technical and Service manual
Inventus upright refrigerators and freezers
User manual - Control unit XW70K AND D50K
12 HOW TO: USE OF THE PROGRAMMING “HOT KEY”
Kind of action: 1B
Pollution degree: normal
Software class: A
Operating temperature: 0 to 60°C (32 to 140°F)
Storage temperature: -25 to 60°C (-13 to 140°F)
Relative humidity: 20 to 85% (no condensing)
Measuring and regulation range:
NTC probe: -40 to 110°C (-58 to 230°F)
PTC probe: -50 to 150°C (-58 to 302°F)
Resolution: 0.1°C or 1°C or 1°F (selectable)
Accuracy (ambient temp. 25°C): ±0.5°C ±1 digit
12.1 PROGRAM A HOT-KEY FROM AN INSTRUMENT (UPLOAD)
1.
2.
3.
4.
Program one controller with the front keypad.
When the controller is ON, insert the “HOT-KEY” and push UP button; the “uPL” message
appears followed a by a flashing “End” label.
Push SET button and the “End” will stop flashing.
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.
15 CONNECTIONS
12.2 PROGRAM AN INSTRUMENT BY USING A HOT-KEY (DOWNLOAD)
1.
2.
3.
4.
5.
15.1 XW70K
Turn OFF the instrument.
Insert a pre-programmed “HOT-KEY” into the 5-PIN receptacle and then turn the Controller
ON.
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.
After 10 seconds the instrument will restart working with the new parameters.
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.
13 ALARM SIGNALS
16 Default setting values
Message Cause
P1
Thermostat probe failure
P2
P3
P4
HA
LA
HA2
LA2
dA
EA
CA
CA
EE
noL
Outputs
Alarm output ON; Compressor output according to
parameters Con and CoF.
Second probe failure
Alarm output ON; Other outputs unchanged
Third probe failure
Alarm output ON; Other outputs unchanged
Fourth probe failure
Alarm output ON; Other outputs unchanged
Maximum temperature alarm
Alarm output ON; Other outputs unchanged
Minimum temperature alarm
Alarm output ON; Other outputs unchanged
Condenser high temperature
It depends on the AC2 parameter
Condenser low temperature
It depends on the bLL parameter
Door open
Compressor and fans restarts
External alarm
Output unchanged.
Serious external alarm (i1F=bAL) All outputs OFF.
Pressure switch alarm (i1F=PAL) All outputs OFF
Data or memory failure
Alarm output ON; Other outputs unchanged
No communication between base Unchanged
and keyboard
Label
Range
Default Level
REGULATION
Hy
Differential
LS
Minimum set point
US Maximum set point
ot
Thermostat probe calibration
P2P Second probe presence
oE
Second probe calibration
P3P Third probe presence
o3
The alarm message is displayed until the alarm condition is recovery.
All the alarm messages are showed alternating with the room temperature except for the “P1” which is
flashing.
To reset the “EE” alarm and restart the normal functioning press any key, the “rSt” message is
displayed for about 3 sec.
Third probe calibration
P4P Fourth probe presence
o4
Fourth probe calibration
Outputs activation delay at start
up
AC Anti-short cycle delay
Ac1 Second compressor delay
rtr P1-P2 percentage for regulation
Compressor ON time during fast
CCt
freezing
LS; US
[0.1 to 25.5°C]
[1 to 45°F]
[-55.0°C to SET]
[-67°F to SET]
[SET to 150°C]
[SET to 302°F]
[-12 to 12°C]
[-21 to 21°F]
n=not present; Y=pres.
[-12 to 12°C]
[-21 to 21°F]
n=not present; Y=pres.
[-12 to 12°C]
[-21 to 21°F]
n=not present; Y=pres.
[-12 to 12°C]
[-21 to 21°F]
Once the alarm signal is detected the buzzer can be silenced by pressing any key. Buzzer is mounted
in the keyboard and it is an option.
13.2 “EE” ALARM
The dIXEL instruments are provided with an internal check for the data integrity. The “EE” alarm
flashes when a failure in the memory data occurs. In such cases the alarm output is enabled.
CCS Set point for continuous cycle
Probe alarms: “P1” (probe1 faulty), “P2”, “P3” and “P4”; they automatically stop 10 sec after the probe
restarts normal operation. Check connections before replacing the probe.
Temperature alarms “HA”, “LA” “HA2” and “LA2” automatically stop as soon as the temperature
returns to normal values.
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.
---
2.0
Pr1
-50.0 Pr2
110
Pr2
0.0
Pr1
Y
Pr1
0.0
Pr2
n
Pr2
0
Pr2
n
Pr2
0
Pr2
0
Pr2
0 to 30 min
0 to 255 sec
0 to 100 (100=P1 , 0=P2)
1
5
100
Pr1
Pr2
Pr2
0.0 to 23h50min, res. 10 min
0.0
Pr2
[-55.0 to 150.0°C]
[-67 to 302°F]
-5
Pr2
0 to 255 min
15
Pr2
0 to 255 min
30
Pr2
°C
dE
P1
0
50
Pr2
Pr1
Pr2
Pr2
Pr2
EL
Pr1
P2
Pr2
Compressor ON time with faulty
Con
probe
Compressor OFF time with faulty
CoF
probe
13.3 ALARM RECOVERY
-5.0
0 to 255 min
odS
13.1 SILENCING BUZZER
DISPLAY
CF
rES
rEd
dLy
dtr
14 Technical data
Keyboards
Housing: self extinguishing ABS
Case: open board: facia 35x86 mm; depth 9mm
Mounting: panel mounting
Protection: IP00;
Connections: pins connections type JST EHR-2
Power supply: from XW70K power module
Display: 3 digits, red LED, 18 mm high
Optional output: buzzer.
Temperature measurement unit
Resolution (integer/decimal point)
Remote display
Display temperature delay
P1-P2 percentage for disply
tdF Defrost type
Probe selection for defrost
termination
dFP
dtE Defrost termination temperature
idF
MdF
dSd
dFd
dAd
Fdt
dPo
dAF
Power module XW70K
Case: 8 DN: 140X176X148
Connections: Screw terminal block  2.5 mm2 heat-resistant wiring and 6.3mm Faston
Power supply: 230Vac or. 110Vac  10% or 24Vac
Power absorption: 10VA max
Inputs: 4 NTC or PTC probes
Digital inputs: 1 free voltage
Relay outputs: Total current on loads MAX. 20A
Compressor/Valve: relay SPST 8(3) A, 250Vac
Fan: relay SPST 16(5) A, 250Vac
Defrost: relay SPST 20(8) A, 250Vac
Light : relay SPST 16(5) A, 250Vac
On/off : TRIAC 2A max, 250Vac
Serial output: TTL standard
Communication protocol: Modbus - RTU
Data storing: on the non-volatile memory (EEPROM)
1598027800 XW70K GB PKK R1.0 10.12.2013doc.docx
Name
SEt Set point
Interval between defrost cycles
(Maximum) length for 1° defrost
Start defrost delay
Displaying during defrost
MAX display delay after defrost
Draining time
First defrost after start up
Defrost delay after fast freezing
FnC Fans operating mode
Fnd Fans delay after defrost
Differential of temperature for
FCt
forced activation of fans
FSt Fans stop temperature
Fon Fan on time with compressor off
FoF Fan off time with compressor off
Probe selection for fan
FAP
management
XW70K
°C; °F
in; dE
P1; dtr
0.0 to 20min00sec, res. 10 sec
1; 100
DEFROST
EL; in
nP; P1; P2; P3; P4
[-50.0 to 150°C]
[-58 to 302°F]
1 to 120 h
0 to 255 min
0 to 99 min
rt; it; SEt; dEF; dEG
0 to 255 min
0 to 60 min
n; Y
0.0 to 23h50min, res. 10 min
FANS
C-n; C-y; O-n; O-y
0 to 255 min
[0 to 50°C]
[0 to 90°F]
[-55.0 to 50°C]
[-67 to 302°F]
0 to 15 min
0 to 15 min
nP; P1; P2; P3; P4
8.0
Pr1
6
30
0
it
30
0
n
0.0
Pr1
Pr1
Pr2
Pr2
Pr2
Pr2
Pr2
Pr2
o-n
10
Pr1
Pr1
10
Pr2
2
Pr1
0
0
Pr2
Pr2
P2
Pr2
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8
Porkka reserves the right to make product alterations at any time and can not be held responsible for any printing errors or omissions.
Technical and Service manual
Inventus upright refrigerators and freezers
User manual - Control unit XW70K AND D50K
Label
Name
Range
AUXILIARY THERMOSTAT
ACH Kind of action for auxiliary relay
CL; Ht
[-55.0 to 150°C]
SAA Set Point for auxiliary relay
[-67 to 302°F]
[0.1 to 25.5°C]
SHy Differential for auxiliary relay
[1 to 45°F]
ArP Probe selection for auxiliary relay
nP; P1; P2; P3
Sdd Aux.output working during defrost
n; Y
ALARMS
Probe setting for temperature
ALP
P1; P2; P3; P4
alarm
ALC Temperature alarms configuration
rE; Ab
[-55.0 to 150.0°C]
ALU MAXIMUM temperature alarm
[-67 to 302°F]
[-55.0 to 150.0°C]
ALL minimum temperature alarm
[-67 to 302°F]
Temperature alarm and fan
[0.1 to 25.5°C]
AFH
differential
[1 to 45°F]
ALd Temperature alarm delay
0 to 255 min
Temperature alarm delay with
dot
0 to 255 min
door open
dAo
AP2
AL2
AU2
AH2
Ad2
dA2
bLL
AC2
tbA
buM
oA4
AoP
i1P
i1F
did
i2b
i2P
i2F
d2d
nPS
odC
Delay of temperature alarm at
0.0 to 23h50min, res. 10 min
start up
Probe for temperat. alarm of
nP; P1; P2; P3; P4
condenser
Condenser for low temperat.
[-55.0 to 150.0°C]
alarm
[-67 to 302°F]
Condenser for high temperat.
[-55.0 to 150.0°C]
alarm
[-67 to 302°F]
Differential for condenser
[0.1 to 25.5°C]
temperature alarm recovery
[1 to 45°F]
Condenser temperature alarm
0 to 254 min , 255=nU
delay
Delay of cond. temper. alarm at
0.0 to 23h50min, res. 10 min
start up
Compressor off because of
n(0); Y(1)
condenser low temperature alarm
Compr. off for condenser high
n(0); Y(1)
temperature alarm
AUXILIARY OUTPUT
Alarm relay disabling
n=no; Y=yes
Buzzer silencing
n(0); Y(1)
ALr = alarm; dEF = do not select it; Lig
=Light; AUS =AUX; onF=always on; Fan=
TRIAC configuration (28-29)
do not select it; db = do not select it; dF2 =
do not select it
Alarm relay polarity (oA4=ALr)
oP; CL
DIGITAL INPUT
Digital input polarity
oP=opening;CL=closing
Digital input configuration
EAL; bAL; PAL; dor; dEF; Htr; AUS
Digital input alarm delay
0 to 255 min
Second Digital input on base
n,y
Digital input polarity
oP=opening;CL=closing
Digital input configuration
EAL; bAL; PAL; dor; dEF; Htr; AUS
Digital input alarm delay
0 to 255 min
Number of activation of pressure
0 to 15
switch
Compress and fan status when
no; FAn; CPr; F_C
open door
Regulation restart with door open
alarm
Light off during energy saving
LES
status
rrd
HES Differential for Energy Saving
Default Level
Ht
Pr2
5
Pr2
2
Pr2
nP
no
Pr2
Pr2
P1
Pr2
Ab
Pr2
110,0 Pr1
-50,0 Pr1
2,0
Pr2
15
Pr2
15
Pr2
1,3
Pr2
P4
Pr2
-40
Pr2
110
Pr2
5
Pr2
15
Pr2
1,3
Pr2
n
Pr2
n
Pr2
y
yes
Pr2
Pr2
onF
Pr2
CL
Pr2
cL
dor
5
CL
EAL
0
15
Pr1
Pr1
Pr1
Pr1
Pr1
Pr1
Pr2
F-C
Pr2
yes
Pr2
n; Y
no
Pr2
n; Y
0
Pr2
[-30 to 30°C]
[-54 to 54°F]
0
Pr2
1
ntC
oFF
-
Pr1
Pr2
Pr2
Pr1
Pr1
Pr1
Pr1
Pr1
Pr2
Pr2
OTHER
Adr
PbC
onF
dP1
dP2
dP3
dP4
rSE
rEL
Ptb
Serial address
Kind of probe
on/off key enabling
Room probe display
Second probe display
Third probe display
Fourth probe display
Current set point
Software release
Map code
1598027800 XW70K GB PKK R1.0 10.12.2013doc.docx
1 to 247
PtC; ntC
nu, oFF; ES
read only
read only
read only
read only
read only
read only
read only
9.4
-
XW70K
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9
Porkka reserves the right to make product alterations at any time and can not be held responsible for any printing errors or omissions.
Technical and Service manual
Inventus upright refrigerators and freezers
Parameters C
Group
Regulation
Parameter
Description
Koodi/Edit
Hy
Differential
2
Regulation
LS
Minimum set point
2
Regulation
US
Maximum set point
12
Probes
ot
Probes
P2P
Probes
oE
Probes
P3P
Probes
o3
Probes
P4P
Probes
Regulation
o4
odS
Air temperature probe calibration
Evaporator (defrost) probe presence
Evaporator (defrost) probe calibration
Condenser probe presence
0
yes
0
yes
Condenser probe calibration
0
Fourth probe presence (not in use)
no
Fourth probe calibration (not in use)
0
Delay at start up
1
3
Regulation
AC
Anti-short cycle delay
Regulation
AC1
Second compressor start delay (not in use)
Regulation
rtr
5
P1-P2 percentage for regulation (not in use)
100
0.00
Regulation
CCt
Continuous cycle duration (not in use)
Regulation
CCS
Set point for continuous cycle (not in use)
Regulation
Con
Compressor ON time with faulty probe
3
Regulation
CoF
Compressor OFF time with faulty probe
20
°C
0
Regulation
CF
Temperature measurement unit
Regulation
rES
Resolution
in
Regulation
rEd
Probe for Temperature display
P1
Regulation
dLy
Display temperature delay
Regulation
dtr
P1-P2 percentage for display (not in use)
Defrost
tdF
Defrost type
EL
Defrost
dFP
Probe selection for defrost
P2
Defrost
dtE
Defrost termination temperature
6
Defrost
idF
Interval between defrost cycles
12
Defrost
MdF
Maximum time for defrost
25
Defrost
dSd
Start defrost delay
Defrost
dFd
Display during defrost shows
dEF
Defrost
dAd
Display delay after defrost
20
Defrost
Fdt
Draining time
Defrost
dPo
First defrost after start-up (not in use)
Defrost
dAF
Defrost delay after fast freezing (not in use)
0.00
O_Y
1.00
50
0
0
no
Fan
FnC
Evaporator fan operating mode
Fan
Fnd
Fan delay after defrost
0
Fan
FCt
Differential of temperature for forced activation of fans (not in use)
10
Fan
FSt
Evaporator fan stop temperature
30
Fan
Fon
Evaporator fan on time with compressor off (not in use)
Fan
FoF
Evaporator fan off time with compressor off (not in use)
Fan
FAP
Probe selection for evaporator fan
Auxiliary
ACH
Kind of action for condenser fan (auxiliary relay)
CL
Auxiliary
SAA
Set point for condenser fan (auxiliary relay)
28
Auxiliary
SHy
Differential for condenser fan (auxiliary relay)
2
Auxiliary
ArP
Probe selection condenser fan (auxiliary relay)
P3
Auxiliary
Sdd
condenser fan (auxiliary relay) switched off during defrost
no
10
Porkka reserves the right to make product alterations at any time and can not be held responsible for any printing errors or omissions.
0
0
P2
Technical and Service manual
Inventus upright refrigerators and freezers
Alarm
ALP
Probe selection for temperature alarms
P1
Alarm
ALC
Temperature alarms configuration
rE
Alarm
ALU
Maximum temperature alarm (setpoint + value of ALU)
5
Alarm
ALL
Minimum temperature alarm (setpoint - value of ALL)
5
Alarm
AFH
Differential for temperature alarm recovery
Alarm
ALd
Temperature alarm delay
15
Alarm
dot
Temperature alarm delay (open door)
15
Alarm
dAo
Delay of temperature alarm at start up
Alarm
AP2
Probe selection for condenser temperature alarms
Alarm
AL2
Condenser low temperature alarm (not in use)
0
Alarm
AU2
Condenser high temperature alarm
55
Alarm
AH2
Differ. for condenser temp. alarm recovery
20
Alarm
Ad2
Condenser temperature alarm delay
Alarm
dA2
Delay of condenser temper. alarm at start up
Alarm
bLL
Compressor off for condenser low temperature alarm
no
Alarm
AC2
Compressor off for condenser high temperature alarm
yes
Alarm
tbA
Alarm relay switched off by pushing a key
yes
Alarm
bUM
Buzzer switched off by pushing a key (not in use)
yes
Configuration
oA3
Condenser fan (third relay) configuration
AUS
Configuration
oA4
Frame heater (fourth relay) configuration
OnF
Alarm
AoP
Alarm relay polarity
OP
1
1.50
P3
0
0.00
Digital inputs
i1P
Door switch polarity (digital input 1)
OP
Digital inputs
i1F
Door switch configuration (digital input 1)
dor
Digital inputs
did
Door switch alarm delay (digital input 1)
Digital inputs
i2P
Digital input 2 polarity (not in use)
1
CL
Digital inputs
i2F
Digital input 2 configuration (not in use)
Digital inputs
d2d
Digital input 2 alarm delay (not in use)
0
Digital inputs
nPS
Number of activation of pressure switch (not in use)
0
Digital inputs
odC
Evaporator fan mode when door open
FAn
Alarm
rrd
Automatic restart with door open alarm
yes
Energy Saving
LES
Light off during energy saving mode (not in use)
no
Energy Saving
HES
Differential for energy saving mode (not in use)
0
Other
Adr
TTL ModBus - serial address
1
Probes
PbC
Kind of probe
ntC
Configuration
onF
On/Off button configuration
OFF
Other
dP1
Displaying value of air temperature probe
Other
dP2
Displaying value of evaporator probe
Other
dP3
Displaying value of condenser probe
Other
dP4
Displaying value of probe 4 probe (not in use)
Other
rSE
Real Set point “SET + ES + SETd” (not in use)
Other
rEL
Firmware Release
Other
Ptb
Map code
2
Regulation
SEt
Set point
4
11
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Technical and Service manual
Inventus upright refrigerators and freezers
Parameters F
Group
Regulation
Parameter
Description
Koodi/Edit
Hy
Differential
2
Regulation
LS
Minimum set point
-25
Regulation
US
Maximum set point
-15
Probes
ot
Air temperature probe calibration
Probes
P2P
Probes
oE
Probes
P3P
Probes
o3
Probes
P4P
Probes
Regulation
o4
odS
Evaporator (defrost) probe presence
Evaporator (defrost) probe calibration
Condenser probe presence
0
yes
0
yes
Condenser probe calibration
0
Fourth probe presence (not in use)
no
Fourth probe calibration (not in use)
0
Delay at start up
1
3
Regulation
AC
Anti-short cycle delay
Regulation
AC1
Second compressor start delay (not in use)
Regulation
rtr
5
P1-P2 percentage for regulation (not in use)
100
0.00
Regulation
CCt
Continuous cycle duration (not in use)
Regulation
CCS
Set point for continuous cycle (not in use)
Regulation
Con
Compressor ON time with faulty probe
3
Regulation
CoF
Compressor OFF time with faulty probe
20
°C
0
Regulation
CF
Temperature measurement unit
Regulation
rES
Resolution
in
Regulation
rEd
Probe for Temperature display
P1
Regulation
dLy
Display temperature delay
Regulation
dtr
P1-P2 percentage for display (not in use)
Defrost
tdF
Defrost type
in
Defrost
dFP
Probe selection for defrost
P2
Defrost
dtE
Defrost termination temperature
6
Defrost
idF
Interval between defrost cycles
6
Defrost
MdF
Maximum time for defrost
25
Defrost
dSd
Start defrost delay
Defrost
dFd
Display during defrost shows
dEF
Defrost
dAd
Display delay after defrost
20
Defrost
Fdt
Draining time
Defrost
dPo
First defrost after start-up (not in use)
Defrost
dAF
Defrost delay after fast freezing (not in use)
0.00
O_n
1.00
50
0
4
no
Fan
FnC
Evaporator fan operating mode
Fan
Fnd
Fan delay after defrost
6
Fan
FCt
Differential of temperature for forced activation of fans (not in use)
10
Fan
FSt
Evaporator fan stop temperature
30
Fan
Fon
Evaporator fan on time with compressor off (not in use)
Fan
FoF
Evaporator fan off time with compressor off (not in use)
Fan
FAP
Probe selection for evaporator fan
Auxiliary
ACH
Kind of action for condenser fan (auxiliary relay)
CL
Auxiliary
SAA
Set point for condenser fan (auxiliary relay)
28
Auxiliary
SHy
Differential for condenser fan (auxiliary relay)
2
Auxiliary
ArP
Probe selection condenser fan (auxiliary relay)
P3
Auxiliary
Sdd
condenser fan (auxiliary relay) switched off during defrost
yes
12
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0
0
P2
Technical and Service manual
Inventus upright refrigerators and freezers
Alarm
ALP
Probe selection for temperature alarms
P1
Alarm
ALC
Temperature alarms configuration
rE
Alarm
ALU
Maximum temperature alarm (setpoint + value of ALU)
5
Alarm
ALL
Minimum temperature alarm (setpoint - value of ALL)
5
Alarm
AFH
Differential for temperature alarm recovery
Alarm
ALd
Temperature alarm delay
15
Alarm
dot
Temperature alarm delay (open door)
15
Alarm
dAo
Delay of temperature alarm at start up
Alarm
AP2
Probe selection for condenser temperature alarms
Alarm
AL2
Condenser low temperature alarm (not in use)
0
Alarm
AU2
Condenser high temperature alarm
55
Alarm
AH2
Differ. for condenser temp. alarm recovery
20
Alarm
Ad2
Condenser temperature alarm delay
Alarm
dA2
Delay of condenser temper. alarm at start up
Alarm
bLL
Compressor off for condenser low temperature alarm
no
Alarm
AC2
Compressor off for condenser high temperature alarm
yes
Alarm
tbA
Alarm relay switched off by pushing a key
yes
Alarm
bUM
Buzzer switched off by pushing a key (not in use)
yes
Configuration
oA3
Condenser fan (third relay) configuration
AUS
Configuration
oA4
Frame heater (fourth relay) configuration
OnF
Alarm
AoP
Alarm relay polarity
OP
1
2.00
P3
0
0.00
Digital inputs
i1P
Door switch polarity (digital input 1)
OP
Digital inputs
i1F
Door switch configuration (digital input 1)
dor
Digital inputs
did
Door switch alarm delay (digital input 1)
Digital inputs
i2P
Digital input 2 polarity (not in use)
1
CL
Digital inputs
i2F
Digital input 2 configuration (not in use)
Digital inputs
d2d
Digital input 2 alarm delay (not in use)
0
Digital inputs
nPS
Number of activation of pressure switch (not in use)
0
Digital inputs
odC
Evaporator fan mode when door open
FAn
Alarm
rrd
Automatic restart with door open alarm
yes
Energy Saving
LES
Light off during energy saving mode (not in use)
no
Energy Saving
HES
Differential for energy saving mode (not in use)
0
Other
Adr
TTL ModBus - serial address
1
Probes
PbC
Kind of probe
ntC
Configuration
onF
On/Off button configuration
OFF
Other
dP1
Displaying value of air temperature probe
Other
dP2
Displaying value of evaporator probe
Other
dP3
Displaying value of condenser probe
Other
dP4
Displaying value of probe 4 probe (not in use)
Other
rSE
Real Set point “SET + ES + SETd” (not in use)
Other
rEL
Firmware Release
Other
Ptb
Map code
2
Regulation
SEt
Set point
-20
13
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EAL
Technical and Service manual
Inventus upright refrigerators and freezers
Wiring diagram C
14
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Technical and Service manual
Inventus upright refrigerators and freezers
Wiring diagram F
15
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Technical and Service manual
Inventus upright refrigerators and freezers
Troubleshooting
Probe alarm P1, P2 or P3
shown on the display
The unit gives ”HA” or ”LA”
temperature alarm
The probe cable has come off the card connectors
Attach the cable to the
card connectors
The probe cable is broken
Replace the probe
The control probe P1 for the temperature inside the
cabinet does not function properly.
Replace the P1 probe
If the control probe P1 measures the temperature
incorrectly, the compressor could run for too long
periods, if the compressor signal LED is seen on the
display all the time. The fault may cause low
temperature alarm”LA”.
T1 may also cause high temperature alarm ”HA” when
the compressor does not start, or functions for too
short a period.
Measure the real temperature inside the cabinet with
a separate thermometer and compare with the
temperature display of the control unit. In case
there is a big difference, the P1 probe is probably
malfunctioning.
The fan signal LED in the
control device is not on and
the evaporator fan does
not rotate. It is also possible
that the display will show
”HA” alarm because of too
high a temperature inside
the cabinet (Note! Only in
models with probe P2)
The evaporator probe P2 does not function properly.
The fan signal LED on the
control device is not on
and the evaporator fan
does not rotate. It is also
possible that the unit shows
”HA” alarm because of too
high temperature inside
the cabinet (Note! Only
models with door switch).
The door switch does not function properly.
Replace the probe P2
Check the reading of probe P2 with the ”Probe”
button and compare it to with the value of the Fst
parameter.
If the Fst has been adjusted to e.g. -5°C and the unit
feels cold but the ”P2” reading is e.g. +10°C, the fault
is probably in the probe P2. The false temperature
data of the probe P2 prevents the evaporator fan
from starting.
Replace the switch.
Leave the door ajar for 3 minutes. It the control
display shows ”dA” ”door open” alarm, the door
switch is OK. If there is no alarm, the door switch is
out of order.
You can also measure the functionality with a
multimeter of the card connectors.
16
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Technical and Service manual
Inventus upright refrigerators and freezers
Troubleshooting
The fan signal LED in the
control device is on but the
evaporator fan does not
rotate. It is possible that
the unit gives ”HA” alarm
because of too high
temperature inside the
cabinet.
Measure the boards connectors, if voltage comes to
the fan points. If there is voltage to the points, the
fan is out of order.
Replace the fan
Measure the board connectors for the fan. If the
control voltage does not come to the points, the
board is defective.
Replace the board
The unit gives ”Csd” alarm.
First, make sure that the
signal LED on the display
condenser fan is on. If so,
the condenser fan should
running.
If the fan does not operate even though its signal
LED is on, measure the board connectors if voltage
comes to the fan points the fan is out of order.
Replace the fan
Measure the board connectors to see if voltage
comes to the fan points. If there is no power to the
points, the board is defective.
Replace the board
The evaporator ice’s up, the
cabinet will begin to warm
up or the temperature of a
freezer cabinet ‘F’ is slow to
regain back to the set
temperature.
A. The fault can be structural
Check the door gasket
RAPID CHECK ABC
The evaporator ice’s up, the
cabinet will begin to warm
up or the temperature of a
freezer cabinet ‘F’ is slow to
regain back to the set
temperature.
The fault can be structural.
Check if the unit is tight.
Close the door and pull it
immediately open. If you
need strength to open
the door, the cabinet is
probably tight. If it is easy
to open, there is an air
leakage somewhere.
B. The fault can be caused by misuse of the unit,
negligence of cleaning and/or the ambient
conditions
C. The fault can be caused by an electric and/or
refrigeration technical problem
Replace the probe
Measure if the suction
pressure if exceptionally
low. Normally about:
1 bar F, 1-4 bar C
The door gasket leaks. The gasket can be torn,
hardened or fatigued. Even the frame of the
cabinet can be distorted if it has been incorrectly
assembled.
Replace the gasket and/or
refit the cabinet
Either the inlet or the sealing face of the evaporator
box leaks. Check first the tightness of the inlet. Only
then remove the evaporator box.
Change the sealings if
necessary
The sealing face of the machine cassette leaks.
Remove the machine cassette.
Add butyl mastic on the
sealing face if necessary
17
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Technical and Service manual
Inventus upright refrigerators and freezers
Troubleshooting
The evaporator ice’s up, the
cabinet will begin to warm
up or the temperature of a
freezer cabinet ‘F’ is slow to
regain back to the set
temperature.
The air circulation of the condenser has been blocked Check that the air
by something.
circulation is not blocked.
The condenser or the condenser filter is dirty and
blocked.
Clean the filter and/or the
condenser.
The condenser fan does not function.
See the item:
The unit gives ”Csd” alarm.
The equipment being used to other purpose of use
than it was meant for.
Check that no one is
trying to refrigerate
or freeze warm foodstuffs.
Air circulation inside the cabinet is blocked.
Check that the air
circulation is not blocked.
See the item ” The fan signal LED in the control
device is on but the evaporator fan does not rotate.”
Replace the fan
In case the equipment has two evaporator fans,
check that both fans function. If one of them does
not function it is probably not possible to reach the
required temperature.
Replace the fan
The fault can be caused by
the condenser.
The evaporator ice’s up, the
cabinet will begin to warm
up or the temperature of a
freezer cabinet ‘F’ is slow to
regain back to the set
temperature.
The fault can be caused by
Misuse of the unit.
The evaporator ice’s up, the
cabinet will begin to warm
up or the temperature of a
freezer cabinet ‘F’ is slow to
regain back to the set
temperature.
The fault can be caused by
the Function of the
evaporator fan.
The evaporator ice’s up, the
cabinet will begin to warm
up or the temperature of a
freezer cabinet ‘F’ is slow to
regain back to the set
temperature.
The fault can be caused
by the function of defrosting.
See the item ”The evaporator probe P2 does not
function properly”.
The hot-gas defrosting of the cabinet with own
cooling unit does not function.
Replace the magnet valve
if necessary.
Check the function of the electromagnetic valve.
The valve pipe to the evaporator is hot in the
beginning of defrosting if the valve opens normally.
The electric defrosting of the cabinet with central
cooling unit does not function.
Replace the board.
Measure the function of the defrost relay of the
control board connectors. If no voltage comes to the
points, the relay is defective.
The electric defrosting of the cabinet with central
cooling unit does not function.
Replace the heater.
Measure the function of the defrost relay of the
control board connectors. If voltage comes to the
points, the heater is defective.
18
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Technical and Service manual
Inventus upright refrigerators and freezers
Troubleshooting
The compressor does not
start, the unit does not
become cold.
Measure of the boards’ connectors, if there is no
voltage to the compressor points.
Replace the board.
If voltage comes to the connectors, the relay and or
the compressor may be defective.
Replace the relay unit
and/or the compressor.
19
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Technical and Service manual
Inventus upright refrigerators and freezers
Fan motor
1. Always switch off the cabinet from the main
electrical supply by removing cable and plug
from wall socket.
Loosen four finger screws (a).
(a)
2. Pull out the roof plate (b).
(b)
3. Remove the fan (c) and loosen the fan plug.
Change the fan.
(c)
20
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Technical and Service manual
Inventus upright refrigerators and freezers
Evaporator
(a)
(c)
(b)
(a)
(d)
1. Loosen two ribbon screws (a).
Remove temperature probe (b).
Loosen magnet valve screws (c, F models only).
3. Remove the ribbons.
(e)
(d)
2. Loosen four screws (d) and plastic plug
(e).
4. Lift up the evaporator box and change
the evaporator.
21
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Technical and Service manual
Inventus upright refrigerators and freezers
Cleaning the condenser filter
1. Switch off the cabinet from the main
electrical supply by removing cable and
plug from wall socket. The condenser is
situated on the right hand side of the
machine compartment of the cabinet
when facing the front. Remove the
knurled - head screw on the lower
part of the top front panel, then pivot
the panel (a) upwards on it’s hinges
until it is secure, leaving the machine
compartment open. Take care that the
panel will not fall back and cause injury.
(a)
2. Push the filter holding bracket (b) down
from the top until it becomes free, then
swing to the right, when you can then
remove the filter and or use a dry brush
or vacuum cleaner to remove dust from
condenser fins.
(b)
3. Was the filter (c) with e.g. liquid
detergent, rinse the filter and let it dry,
and then put replace. Switch that cabinet
on only when the front cover has been
replaced in position and screw is back in
place.
(c)
22
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Technical and Service manual
Inventus upright refrigerators and freezers
Probes, P1 Temperature probe
1. Pull out the temperature
probe (a).
(a)
2. Pull out the probe
adapter (b).
Replace the probe and
reinstall the whole set.
(b)
3. Probe + adapter
20mm
23
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Technical and Service manual
Inventus upright refrigerators and freezers
Probes, P2 defrost probe
1. Lift up the evaporator box,
see page 13.
2. Replace the probe.
Use two cable ties and
insulation material.
(a)
Probes, P3 condenser probe
1. Pivot the panel upwards
on it’s hinges until it
is secure, leaving the
machine compartment
open. Take care that the
panel will not fall back
and cause injury.
2. Replace the probe (a). Use
cable tie and insulation
material.
(a)
24
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Technical and Service manual
Inventus upright refrigerators and freezers
25
Porkka reserves the right to make product alterations at any time and can not be held responsible for any printing errors or omissions.
Not proof read yet!
Technical and Service manual
Inventus upright refrigerators and freezers
How to change the hinging of the solid door
You will need a straight ball head allen key (4 mm), a sharp flat screw driver, a sheat-knife and a
hammer.
1. Open the door over 90 °C and carefully remove the
black sealing plugs on the other side with your
knife.
2. Loosen the two hex screws in the upper hinge,
supporting the door with your foot
3. Lift the door off the lower hinge. Do not change
the angle.
26
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Not proof read yet!
Technical and Service manual
Inventus upright refrigerators and freezers
How to change the hinging of the solid door
4. Place the door steadily against the wall, the handle
being on the bottom side.
Carefully tap off the former upper hinge with a
hammer. Remove the lock counter bracket, too.
5. Install the former upper hinge and replace the lower
hinge by screwing it to its place. The hinge is
pretensioned, so be carefull not to release it. If
released, retension the spring as shown.
27
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Not proof read yet!
Technical and Service manual
Inventus upright refrigerators and freezers
How to change the hinging of the solid door
6. Loosen the former lower hinge from the body and
tap it carefully with a hammer to replace the former
upper hinge you just took off from the door leaf.
Position according to pics. The hinge is pretensioned,
so be carefull not to release it.
7. ”Drop” the door with care to rest on the lower hinge
and support the front of the door with your foot.
Should the mounting hole of the upper hinge not
match with the holes in the body, the door is not in
its place.
Screw the upper hinge to the body while the door is
opened more than 90°C.
Fix the sealing plugs (4 pcs) back to their place.
28
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Technical and Service manual
Inventus upright refrigerators and freezers
29
Porkka reserves the right to make product alterations at any time and can not be held responsible for any printing errors or omissions.
Technical and Service manual
Inventus upright refrigerators and freezers
EC-declaration of conformity for electrical equipment
Manufacturer
PORKKA FINLAND OY
Address
Soisalmentie 3, FI-15860 HOLLOLA 2, Finland
Herewith declares that
the Inventus chiller and freezer cabinets
C6, C7, C8
F6, F7, F8
are in conformity with the provisions of Low Voltage Directive
(Directive 2006/95/EC), as amended, and with national implementing
legislation;
are in conformity with the provisions of the following other IEC directives
CB EMC
EMC directive 2004/108/EC,
and furthermore declares that
the following harmonized standards have been applied
IEC 335-2-24
EN953
WEEE 2012/19/EU
RoHS 2011/65/EC
Ozone Deplating Substances Regulation 1005/2009
Fluorinated Greenhause GasesRegulation 842/2006
Ecodesign 327/2011
Also Porkka Finland use in own production following quality standard
ISO 9001
ISO 14001
Hollola, 2.01.2014
PORKKA FINLAND OY
Timo Masanen
Product manager
30
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Technical and Service manual
Inventus upright refrigerators and freezers
31
Porkka reserves the right to make product alterations at any time and can not be held responsible for any printing errors or omissions.
Porkka Finland Oy is an internationally recognised
designer and manufacturer of Refrigeration and
Food Storage/Display Equipment.
Porkka Finland Oy is an internationally recognised designer and manufacturer of Refrigeration and
Food Storage/Display Equipment. The range incorporates Chilled, Frozen and Heated options. Major
clients include commercial kitchens, restaurants, fast food outlets, hotels, industrial canteens, hospitals,
laboratories and retailers throughout the World.
Our main markets outside of Finland include Scandinavia, United Kingdom, Germany, Switzerland,
Holland, Belgium, Russia and the Baltic regions. 80% of the companies’ turnover is derived from
foreign transactions and exports. On going and adaptive development by numerous foreign subsidiaries
and representatives ensures our continued growth.
Porkka’s success is based on decades of experience, customer focused design and continuous
product development.
Porkka Finland Oy is part of the Huurre Group. Porkka and Huurre brands are well known for their
quality and reliability throughout the world.
Porkka Finland Oy designs and manufactures to a quality standard ISO 9001 which is controlled and certified by Lloyd’s
Register Quality Assurance. We also hold the environmental certificate ISO 14001 which also has been issued by LRQA,
where environment impact in production is kept to a minimum.
Porkka Finland Oy reserves the right to make any changes without prior notice.
Porkka Finland Oy
Soisalmentie 3
FI-15860 Hollola, Finland
Tel. +358 20 5555 12
Fax. +358 20 5555 497
e-mail: [email protected]
www.porkka.fi
Porkka Scandinavia AB
Industrigatan 21
S-61933 Trosa, Sverige
Tel. +46 156 348 40
Fax +46 156 167 50
e-post: [email protected]
www.porkka.se
Porkka Norge AS
Lensmannslia 30
N-1386 Asker, Norge
Tel. +47 66 98 77 77
Fax +47 66 98 77 88
e-post: [email protected]
www.porkka.no
Porkka (U.K.) Limited
29B Greenhill Crescent
Watford Business Park, Watford
Hertfordshire, WD18 8YB, UK
Tel. +44 1923 23 36 75
Fax +44 1923 80 57 17
e-mail: [email protected]
www.porkka.co.uk