dIXEL XB570L User manual

dIXEL Operating and Instructions Manual 1592006100
1592006100 XB570L GB r1.0 04.11.2004.doc XB570L 1/6
XB570L
BLAST CHILLER - QUICK CHILL AND HOLD FUNCTION
Contents
1. General warning_______________________________________ 1
2. General Features ______________________________________ 1
3. Mounting & Installation__________________________________ 1
4. Electrical Connections __________________________________ 1
5. Connections __________________________________________ 1
6. Frontal panel _________________________________________ 1
7. Front Panel Commands _________________________________ 2
8. How To Select A Cycle. _________________________________ 2
9. How To Start The Selected Cycle._________________________ 2
10. How to temporarily stop the running cycle. __________________ 2
11. How to definitively stop the cycle. _________________________ 2
12. How To Modify The Set Point Of The Hold Mode._____________ 2
13. How to start a manual defrost. ____________________________ 2
14. How A Cycle Is Done. __________________________________ 2
15. Function And Parameter Programming Menu ________________ 3
16. Accessing “Pr2” and SECURITY CODE input ________________ 4
17. List of parameters______________________________________ 4
18. Printer management____________________________________ 5
19. IV configurable relay. ___________________________________ 5
20. Digital configurable input.________________________________ 5
21. ALARM SIGNALS _____________________________________ 5
22. Technical data ________________________________________ 6
23. Standard Value of the cycles._____________________________ 6
24. Standard Values of the parameters.________________________ 6
1. General warning
1.1 PLEASE READ BEFORE USING THIS MANUAL
•This manual is part of the product and should be kept near the
instrument for easy and quick reference.
•The instrument shall not be used for purposes different from those
described hereunder. It cannot be used as a safety device.
•Check the application limits before proceeding.
1.2 SAFETY PRECAUTIONS
•Check the supply voltage is correct before connecting the instrument.
•Do not expose to water or moisture: use the controller only within the
operating limits avoiding sudden temperature changes with high
atmospheric humidity to prevent formation of condensation
•Warning: disconnect all electrical connections before any kind of
maintenance.
•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.
•Fit the probe where it is not accessible by the end user.
•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 Features
The series XB has been created for fast chilling or freezing goods according
to international food safety standards.
There are FOUR types of cycles:
•The CYCLES: Cy1, Cy2, Cy3, Cy4 are pre-set according to the most
common cycles used in food - safety applications; the user can select
one of them according to his own requirements and modify it as he
wants.
•Any cycle can be manually terminated before the normal.
•Any cycle can use the third probe like an “insert probe”, it measures the
internal temperature of the product.
•During the Cycle there are no defrosts and the fans are always on, a
defrost cycle can be done before any freezing cycle.
•The cycle is divided up to 3 phases completely configurable by the user.
•Each instrument is provided with an output for remote display XR REP,
which shows the temperature of cabinets or goods.
•The XB570L controller is provided with internal real time clock and can
be connected to the XB05PR printer. This means that a report, which
includes all the main features of cycle, can be printed: start and end of
the cycle, length of the cycle, logging of the temperature of the cabinet
and goods.
3. Mounting & Installation
Model XB570L is a controller panel mounted, hole dims 150x31 mm, and
fixed with the screws. The ambient working temperature range should be
between 0÷60°C. Avoid locations subject to heavy vibration, corrosive gases
or excessive dirt. The same applies to the probes. Ensure ventilation around
the instrument.
4. Electrical Connections
The instruments are provided with a screw terminal block to connect cables
with a cross section up to 2,5 mm2. Before connecting cables make sure the
power supply complies with the instrument’s requirements. Separate the
input connection 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.
4.1 PROBES 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 and from the warmest
place during defrost, to prevent premature defrost termination.
5. Connections
Digital inp.
Evap. Insert Room
XB570L
Def. Alarm/ AUX Fan
12A
250Vac
MAX
20A
8A
250Vac
8A
250Vac
Supply
230Vac
Comp
8A
250Vac
1913 14 15 16125678910111 2 3 4 17 18
6. Frontal panel
Aux
1 2
3 4
6.1 MEANING OF THE LEDS’
A series of light points on the front panels is used to monitor the loads
controlled by the instrument. Each LED function is described in the following
table.
LED MODE ACTION
ON - Compressor enabled
Flashing - Programming Phase (flashing with LED )
- Anti-short cycle delay enabled
ON - Fans enabled
Flashing - Programming Phase (flashing with LED )
- Activation delay active
ON - Defrost active
Flashing - Drip time active
ON - Freezing cycle or hold mode active
Flashing - Instrument temporarily stop
ON - Alarm signalling
- In “Pr2” indicates the parameter is also present
in “Pr1”
AUX ON - IV relay enabled

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7. Front Panel Commands
7.1 WHEN A CYCLE IS NOT ACTIVE.
SET:TO DISPLAY SET POINT OF HOLD MODE:
by pressing and releasing this key when a freezing cycle is not active
the set point of the “Hold mode” is displayed for 5s.
TO MODIFY SET POINT OF HOLD MODE: by holding the key
pressed for at least 2s set point change mode is entered: the set point
is displayed and the LEDs of the first and third digits blink. To change
the value use the “UP” and “DOWN” keys. The new value can be
stored either by pressing the “SET” key (the instrument restores
temperature display) or by waiting the exit time-out to expire (15s).
(UP): To start a manual defrost: keep it pressed for 2s and a defrost
will start..
In programming mode or in “Function Menu” it browses the
parameter codes or increases the value of the displayed variable. Hold
pressed for a faster change.
(DOWN): TO ACTIVATE THE AUX RELAY: by holding the key
pressed for 3 s the AUX relay is activated. (The activation time
depends on the related parameter)
In programming mode or in “Function Menu” it browses the
parameter codes or decreases the value of the displayed variable.
Hold pressed for a faster change.
TO START (or STOP) A CYCLE: by pressing it the shown cycle is
started
1
, …,
4
C1, …, C4
To select and deselect a cycle: push one of these keys, the related
led will be lighted and the cycle will be selected. To select another
cycle push another key.
If no leds are on the holding phase is selected.
KEY COMBINATIONS:
+ TO UNLOCK THE KEYBOARD: when held pressed for 3s the
keyboard is unlocked (see “LOC” function).
SET +TO ENTER THE FUNCTION MENU: when a cycle is not active,
by holding these keys pressed for 3s the Function Menu is entered.
SET + TO GO BACK TO THE PREVIOUSLY MENU Once entered in
the Function Menu or in some sub-menu, these keys can be used to
go to the previously menu.
7.2 WHEN A CYCLE IS ACTIVE
SET:TO DISPLAY SET POINTS AND THE DURATION OF THE
CURRENT PHASE:
by pressing and releasing this key when a cycle is active the message
“rPS” room Probe Set is displayed followed by the flashing set point of
the room. While the set point is flashing press again the key and the
message “iPS” (insert Probe Set) will be displayed followed by the
value of the end phase temperature. Press again the SET key and the
remaining time of the phase will be displayed.
(UP): TO DISPLAY THE CURRENT PHASE: press and release the
UP key, the message PH1 (phase 1), or PH2 or PH3 or HP (hold
phase) will be displayed.
(DOWN): TO ACTIVATE THE AUX RELAY: by holding the key
pressed for 3s the AUX relay is activated only if OAC=AA
(anticondensation) or OAC= Li (light). (The activation time depends on
the related parameter)
TO TEMPORARILY STOP THE RUNNING CYCLE: press and release
this key, the running cycle will be stopped for the time set in the PAU
parameter, and the “Stb” flashing message will be diplayed.
TO MANUALLY STOP THE RUNNING CYCLE: keep pressing the key
until the “End” message will be displayed. The running cycle will be
definitively stopped.
8. How To Select A Cycle.
Assure that none cycle is active: the LED of the symbol is OFF.
1. Push one of the following keys C1, C2, C3, C4 the related led will be
lighted and the cycle will be selected.
NOTE: to pass from a cycle to another one simply push the related key.
HOLD PHASE: To select the old phase deselect the enabled cycle
pushing the related key. ES. Cycle 1 is selected (its led is oon), push the
C1 key, the led will be turn off and the hold phase will be enabled.
2. Cycles are pre-set with the following values:
1. Cy1: for fast chilling and conservation of foods (hard +soft
chill).
2. Cy2: for chilling and fast freezing of foods (hard +soft +
freezing cycle).
3. Cy3: for direct fast freezing (only fast freezing cycle)
4. Cy4: for fast freezing avoiding ice skin (hard chill +
freezing cycle)
5. HLd: hold mode function
6. dEF: for starting a manual defrost
3. Now the cycle is memorised and can be activated.
9. How To Start The Selected Cycle.
1. Hold pressed the START key until the LED lights up.
10. How to temporarily stop the running cycle.
1. Press and release the key.
2. The compressor and the fan will be stopped for the PAU time (see
parameters list) and the flashing message “Stb” will be displayed.
3. To restart the cycle press and release the key, the cycle will restart
from the some point at which it was interrupted.
4. In any case the cycle automatically restarts after the PAU time.
11. How to definitively stop the cycle.
1. Hold pressed the key until “End” message will be displayed and
the buzzer will be enabled.
2. The instrument is now placed in stand by mode.
12. How To Modify The Set Point Of The Hold Mode.
When a cycle is not active:
1. Hold the SET key pressed for at least 2s set point change mode is
entered: the set point of the hold mode is displayed and the LEDs of the
first and third digits blink.
2. To change the value use the “UP” and “DOWN” keys.
3. The new value can be stored either by pressing the “SET” key (the
instrument restores temperature display) or by waiting the exit time-out to
expire (15s).
13. How to start a manual defrost.
Assure that none cycle is active or the hold mode is running.
1. Hold press the UP key fro few seconds.
NOTE: The defrost will not be done if the temperature detected by the
evaporator probe is higher than EdF (stop defrost temperature) parameter. In
this case the “nod” message is displayed.
14. How A Cycle Is Done.
1. Every programmable cycle Cy1, Cy2, Cy3 or Cy4 can be divided into up
to 3 phases usually called:
•hard chill
•soft chill
•freezing cycle
2. For each phase there are 3 parameters.
iS1, (iS 2, iS 3): Set point related to the third probe (insert probe) that
stops the current phase.
rS1, (rS2, rS3): set point of the room temperature for each phase.
Pd1, (Pd2, Pd3): the maximum duration time for each phase.
Hds : set point of the hold phase at the end of the whole cycle.
There are also 2 parameters related to the defrost. These are dbC = defrost
before cycle, dbH = defrost before holding (at the end of the cycle).
14.1 CONFIGURABLE CYCLE PARAMETERS
dbc(yes/no) Defrost before the cycle
iS1 (-50÷50°C;1°C/1°F) Insert Probe Set point: when the temperature
measured by the third probe reaches this value the first phase is ended.
rS1(-50÷50°C; 1°C/1°F) Room probe Set point for the first phase: it prevents
temperature from reaching a too low value during the hard cycle.
Pd1(OFF÷4.0h;10 min)Maximum time for first phase
iS2 (-50÷50°C; 1°C/1°F) Insert probe set point to end the second phase when
the temperature measured by the third probe reaches this value the
second phase is ended.

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rS2 (-50÷50°C; 1°C/1°F) Room probe Set point for the second phase: it
prevents temperature from reaching a too low value during the second
phase.
Pd2 OFF÷4.0h; res. 10 min Maximum time for second phase.
iS3 (-50÷50°C; 1°C/1°F) Insert Probe Set point to stop the third (and last)
phase: when the temperature measured by the third probe reaches this
value the whole cycle is ended.
rS3 (-50÷50°C; 1°C/1°F) Room probe Set point for the third (and last) phase:
it prevents temperature from reaching a too low value during the third
(and last) phase.
Pd3 (OFF÷4.0h; 10 min) Maximum time for the third phase.
dbH (yes / no) defrost before the hold phase
HdS (-50÷50 - OFF; 1 °C / 1°F) Set point of the holding phase. With “OFF”
the hold phase is disabled.
IMPORTANT NOTE: If the duration time of a phase is set at the OFF value,
the corresponding phase is disabled. E.g. If Pd3= 0FF the third phase of the
cycle is not active.
14.2 . HOW TO USE THE INSERT PROBE.
By means the insert probe, the internal temperature of products can be
checked. This measure is used to end the various phase of the cycle. A
special internal function detect if the inset probe is not used, in this case the
cycle is made by time
14.3 EXAMPLE OF A BLAST CHILLER CYCLE.
The following drawing explains how a Blast Chiller cycle can be done.
14.3.1 First phase: “Hard chill”.
It is normally used to fast chill hot foods. E.g. from 80°C / 170°F to 20°C /
70°F
During “Hard Chill”, both compressor and fan are always on until the
rS1 temperature is reached. At this point compressor is turned on end
off so as to keep the temperature of the room at the rS1 value. “Hard
Chill” ends when the temperature measured by the third probe reaches
the iS1 value. Normally rS1 is set at few degrees below zero.
14.3.2 Second phase: “Soft chill”.
The Soft Chill starts when the Hard Chill ends. It is used to prevent thin
layer of ice from forming on the product. The Soft Chill lasts until the
temperature measured by the third probe reaches the set point iS2
(usually 4 or 5°C).
During Soft Chill the temperature of the room is regulated by the ambient
probe with the set point rS2 (normally at 0 or 1 °C / 32 or 34°F). When
the box temperature reaches the rS2 value compressor is turned on end
off so as to keep the temperature of the box at this value.
14.3.3 Third phase: “Freezing cycle”.
Freezing Cycle: used to fast freeze foods.
The Freezing Cycle starts when the Soft Chill ends. During the “Freezing
Cycle” both compressor and fan are always on until the rS3 temperature
is reached. At this point compressor and fans are turned on end off so as
to keep the temperature of the room at the rS3 value (normally some
degrees below iS3). Freezing Cycle ends when the temperature
measured by the third probe reaches the iS3 value (normally -18°C /
0°F), in any case it ends when the maximum time Pd1 + Pd2 + Pd3 has
expired.
14.3.4 End of the Blast Chill cycle and starting of the Hold Mode.
When the Blast Chiller cycle ends an alarm signal is generated: buzzer
and alarm relay is turned ON, the display shows the message “End”
alternating with the room temperature.
The alarm automatically stops after 30min or by pressing any key.
At the end of the Blast Chiller cycle the controller can start the “Hold
mode” keeping the room temperature at the value set in HdS parameter.
If HdS = OFF, the machine is turned OFF.
NOTE1: with dbH = yES a defrost is done before the holding phase.
NOTE2: If the end cycle temperature IS3 is not reached by the maximum
time Pd1+Pd2+Pd3 the instrument keep on working, but the alarm message
“OCF” is given.
15. Function And Parameter Programming Menu
15.1 FUNCTION MENU
Includes all the main functions controlled by the instrument.
15.2 ACCESS PROCEDURE:
1. Hold the SET and DOWN keys pressed for few seconds, until the label of
the first function will be displayed.
2. The UP and DOWN keys are used to cycle backwards or forward in the
menu.
3. By pressing the SET key the currently displayed function is enabled.
4. To go back to the previously Menu press the SET and DOWN keys
together
15.3 LIST OF FUNCTIONS
15.3.1 “Prb”: probe display
It permits the user to display the temperatures measured by the probes.
•rPr: displays for 10s the temperature measured by the room probe.
•EPr: displays for 10s the temperature measured by the evaporator
probe.
•iPr: displays for 10s the temperature measured by the insert probe.
NOTE1 If a key is pressed when a temperature is displayed, the
instrument go back to show the label of the probe (rPr, EPr, iPr).
NOTE2: If the selected probe is broken, the follow alarm labels will be
displayed: rPF for the room probe, EPF for the evaporator probe, iPF for
the insert probe.
15.3.2 “Pr1”: user parameters
“Pr1” includes all user accessible parameters. If no parameter would be
present in the menu, the label “Pr2” will be displayed.
15.3.3 “Pr2”: installer parameters
“Pr2”: includes all the instrument’s parameters (at installer level). It can be
accessed through a security code. Hence it is possible to modify all
parameters and add or remove parameters from “Pr1” (user level) by
pressing “SET” + “UP”. When a parameter is enabled at user level,
LED (Alarm LED) is on.
15.3.4 “FCy”: cycle management
The FCy menu contains the Cy1, Cy2, Cy3, Cy4 submenu. Each
submenu contains all the configurable parameter of the cycle as shown
in the following drawing:
Cy1
Fcy
Cy2 Cy3 Cy4
rS1
Pd1
dbH
iS2
rS2
Pd2
iS3
rS3
Pd3
iS1
dbC
HdS
rS1
Pd1
dbH
iS2
rS2
Pd2
iS3
rS3
Pd3
iS1
dbC
HdS
rS1
Pd1
dbH
iS2
rS2
Pd2
iS3
rS3
Pd3
iS1
dbC
HdS
rS1
Pd1
dbH
iS2
rS2
Pd2
iS3
rS3
Pd3
iS1
dbC
HdS
15.3.5 “Sto”: cycle length
The Sto menu records the real length of a cycle and the real length of
each single phase. It contains the following sub-menu:
tCy: cycle duration, tP1: first phase duration; tP2: second phase
duration; tP3: third phase duration.

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15.3.6 “rtC”: clock management (for XB570L only)
It contains the real time clock parameters:
SEC: seconds (00÷59);
Min: Minutes (00÷59);
Hou Current hour (1÷24)
7dY: day of the week (Mon = Monday, tue = Tuesday, Wed =
Wednesday, thu = Thursday, Fri = Friday, Sat = Saturday, Sun =
Sunday).
dAY: day of the month (1÷31)
Mon: number of the month (1÷12)
YEA: year (0÷99)
15.3.7 “ALr”: alarms display
This function displays any alarm messages.
15.3.8 “Prt”: printer management
This menu is used for the management of the printer. It contains the
parameters:
PrP printer presence: (Yes/no) Enabling or disabling the printer
itP: printing interval: (0.0÷30.0 min) It sets the interval of printing.
PbP: Which probe print: (,iP: Only the Insert probe; rP: Only the room
probe; irP: The Insert and the room probe; irE: All the probe)
PtH: (yes/no) it enables or disables the printing during the holding
phase.
15.3.9 “tSt”: it starts the instrument self test.
15.3.10 “Out”: exits from menu.
16. Accessing “Pr2” and SECURITY CODE input
To access parameters in “Pr2” a security code is required.
1. Enter Function Menu, select label “Pr2” and press the “SET” key. The
“PAS” flashing message is displayed, shortly followed by “0 _ _” with a
flashing zero.
2. Use “UP” or “DOWN” to input the security code in the flashing digit;
3. Confirm the figure by pressing “SET”.
4. Repeat operations 2 and 3 for the other digits.
5. If the security code is correct the access to “Pr2” is enabled by pressing
“SET” on the last digit, otherwise the “rtC” menu is shown.
If no key is pressed for more than 15 seconds the instrument reverts to room
temperature display mode.
The default SECURITY CODE is 321 .
NOTA1: the general security code is 981. (please refer to parameter PAS)
NOTE2: each parameter in “Pr2” can be removed or put into “Pr1” (user
level) by pressing “SET+ è”. In Pr2 when a parameter is present in “Pr1” or
“rtC” LED is on.
17. List of parameters REGULATION
HyIntervention differential for set point: (0,1 ÷12,0 /0,1°C/1°F), always
positive. Compressor cut IN is Set Point Plus Differential (Hy).
Compressor cut OUT is when the temperature reaches the set point.
AC Anti-short cycle delay: (0÷30 min) minimum interval between the
compressor stop and the following restart.
1c2 Second compressor setting: (enabled only if OAC=C2)
The fourth relay work as second compressor if OAC=Co2.
Second compressor operates on set + OAS. (whit set= set loaded during
the current phase). It starts oAt min. after the first compressor
The following table shows how it works:
Cycle Holding
1c2=0 C1 ON; C2 On C1 on; C2 On
1c2=1 C1 on; C2 On C1 on C2 off
1c2=2 C1 on; C2 off C1 on; C2 On
1c2=3 C1 on; C2 off C1 off; C2 On
rPOThermostat probe calibration (-12,0 ÷12,0; res. 0,1 °C /1°F)
EPP Evaporator probe presence (not present in the XB350C): (no / YES)
no: not present (timed defrost); YES: present (end defrost )
EPO Evaporator probe calibration (not present in the XB350C): (-12,0 ÷
12,0; res. 0,1 °C /1°F)
iPP Insert probe presence (no / YES) no: not present; YES: present.
iPOInsert probe calibration (-12,0 ÷12,0; res. 0,1 °C /1°F)
CF Temperature measurement unit: °C =Celsius; °F =Fahrenheit
rESResolution (for °C): in: integer; de: with decimal point
PAU Time of stand by: (0 ÷60min) after this time the controller restart the
cycle
PFt Maximum acceptable duration of power failure: (0 ÷250 min) if power
failure duration is less than PFt, the cycle restarts from the same point at
which it was stopped otherwise the cycle restarts from the beginning of
the current phase.
iPd Temperature difference for the automatic recognition of the insert
probe: (0 ÷30; ris.1 °C/1°F) if the difference of temperature between the
insert probe and the thermostat probe is less than iPd, the selected cycle
is made by time.
iPtTime delay for the automatic recognition of the insert probe:
(0÷255sec, with 0 only timed cycles are done) time between the start of
a cycle and the comparison of the temperature of the thermostat probe
and the insert probe to recognising if the insert probe is used.
Con Compressor ON time with faulty probe: (0÷255 min) time during
which the compressor is active in case of faulty thermostat probe. With
COn=0 compressor is always OFF
COF Compressor OFF time with faulty probe: (0÷255 min) time during
which the compressor is off in case of faulty thermostat probe. With
COF=0 compressor is always active
diC Digital input operating mode (EAL, bAL, dor)
EAL: external alarm; bAL: serious alarm; dor: door open function
diP: digital input polarity: (OP÷CL)select if the digital input is activated by
opening or closing the contact. OP= opening; CL=closing
did: digital input delay (0÷255 min) delay between digital input activation
and his signalling for configurable or door opened alarm.
NOTE: with diC=EAL did has to be different from zero.
OAC: AUX output configuration: (AL, Li, UL, Ip, AA, rE, dF, C2)
AL: alarm output; Li: light of the cabinet; UL: for the ultra-violet light (It is
actionable only when the controller is in OFF position); Ip: to extract the
insert probe (It is actionable only when the controller is in OFF position);
AA: anti - condensation; rE: the IV relay works as a thermostat, with
direct action (cooling) (OAH>0), and inverse actions (heating) (OAH<0);
dF: the IV relay is activated during the defrost, at the end of the defrost it
remains ON for the OAt time; C2: second compressor. See 1c2
parameter for different settings.
OAP AUX output polarity (OP ÷CL) OP= normally open; if it is ON the
terminals 6-8 are closed. CL= normally closed; if it is ON the terminals 6-
7 are closed.
OAt AUX output timer: (0÷255 min) time in which the AUX output stays ON.
It is enabled when OAC = Li or UL or Ip or AA or dF.
OAS Set point for AUX output (-50÷50; ris.1 °C/ 1°F)
OAH Differential for AUX output: (-12.0÷12,0; ris.0,1°C/1°F, always ≠0)
Intervention differential for the set point of the auxiliary, with OAH<0 the
action is for heating, with OAH>0 it is for cooling. COOLING: AUX cut IN
is OAS Plus Differential (OAH>0). AUX cut OUT is when the temperature
reaches the set point OAS.
HEATING: AUX cut IN is OAS Plus Differential (OAH<0). AUX cut OUT is
when the temperature reaches the set point OAS.
OAiProbe selection for the AUX output (rP, EP, iP) rP = thermostat probe,
EP = evaporator probe; iP = insert probe
DEFROST
tdF Defrost type (not present in the XB350C): (rE= electrical heater; in =
hot gas).
dPO Defrost before the holding: no= no defrost; YES= defrost at the start
of a holding cycle.
IdF Interval between defrost cycles: (0.1÷24.0; res. 10 min) Determines
the time interval between the beginning of two defrost cycles. (with 0.0
the defrost is disabled)
dtE Defrost termination temperature (not present in the XB350C): (-
50÷50 °C/°F) Sets the temperature measured by the evaporator probe,
which terminates the defrost.
MdF Maximum length for defrost: (0÷255 min) When EPP = no (timed
defrost) it sets the defrost duration, when EPP = YES (defrost
termination based on temperature) it sets the maximum length for
defrost.
dFd Temperature displayed during defrost: (rt , it, SEt, dEF) rt: real
temperature; it: temperature at the start of defrost; SEt: set point; dEF:
“dEF” message
Fdt Drip time (not present in the XB350C): (0 ÷60 min) Time interval
between reaching defrost termination temperature and the restoring of
the controllers' normal operation. This time allows the evaporator to
eliminate water drops that might have formed during defrost.
FANS
FnC Fans operating mode during the holding phase:
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;
FSt Fan stop temperature: (-50÷50°C/°F; res. 1°C/1°F) if the temperature,
detected by the evaporator probe is above FSt fans are stopped. It
serves to avoid blowing warm air around the room.
AFH Differential for the stop temperature and for the alarm (0.1 ÷25.0
°C; ris.0.1°C/1°F) Fans carry on working when the temperature reaches
the FSt-AFH value, the temperature alarm recovers when the
temperature is AFH degrees below the alarm set.
Fnd Fan delay after defrost: (0 ÷255 min) The time interval between end of
defrost and evaporator fans start.
ALARM
ALU MAXIMUM temperature alarm: (1 ÷50 °C/°F) When the “SET+ALU”
temperature is reached the alarm is enabled, (possibly after the “Ald”
delay time).

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ALL Minimum temperature alarm: (1÷50°C/1°F) When the “SET-ALL”
temperature is reached the alarm is enabled, (possibly after the “Ald”
delay time).
ALd Temperature alarm delay: (0÷255 min) time interval between the
detection of an alarm condition and alarm signalling.
EdA Temperature alarm delay at the end of defrost: (0 ÷255 min) Time
interval between the detection of the temperature alarm condition at the
end of defrost and alarm signalling.
tbA Silencing alarm relay: (Yes= silencing buzzer and alarm relay, no= only
buzzer silencing). OTHER
Ad1 Address 1 for RS485: (0 ÷94)
Ad2 Address 2 for RS485 (0 ÷94)
LodLocal display: (rP, EP, iP, nr) select which probe is displayed by the
instrument: rP: thermostat probe; EP: evaporator probe; iP: insert probe,
nr: during a temperature cycle the insert probe is displayed, during the
holding phase the room probe is displayed; if the cycle is made by time
the time remaining is displayed (in minutes).
rEd Remote display: (rP, EP, Ip) select which probe is displayed by the XR
REP. rP: thermostat probe; EP: evaporator probe; iP: insert probe.
LocSet point of the holding phase lock (no - YES) It locks the set point of
the holding phase.
PAS Security code set up: (0 ÷999) It sets the personal security code.
tPb Type of probe: it displays the probe used (NTC or PTC) (readable only)
rEL Release code (readable only)
Ptb Parameter code (readable only)
17.1 PARAMETERS RELATIONS
PARAMETER : EPP (no XB350C)
Value Hide Display
no EPO - dtE -FSt
YES EPO - dtE -FSt
PARAMETER: IPP
Value Hide Display
no iPO - iPd - iPt
YES iPO - iPd - iPt
PARAMETER: CF
Value Hide Display
°C rES
°F Res
PARAMETER: OAC
Value Hide Display
AL OAt - OAS - OAH - OAi
Li OAS - OAH - OAi OAt
UL OAS - OAH - OAi OAt
iP OAS - OAH - OAi OAt
AA OAS - OAH - OAi OAt
rE OAt OAS - OAH - OAi
dF OAS - OAH - OAi OAt
18. Printer management
The instrument XB570L can drive the serial printer XB05PR by means of
the RS232 output. So temperatures measured during a freezing cycle can be
printed. Time reference is provided by the internal Real Time clock of the
instrument.
The “Prt” functions manages the printer by means of the following
parameters:
Prt: printer presence: (Yes/no) it enables or disables the printer.
itP: printing interval: (0.0÷30.0 min).
PbP: which probe has to be printed: (iP: Only the insert probe; rP: Only
the thermostat probe; irP: Insert and thermostat probes; irE: All the probes.
PtH: Printing during the holding phase (yES, no) yES = Printing enabled
during the holding phase; no= Printing disabled during the holding phase.
19. IV configurable relay.
The relay can be used for
19.1.1 OAC=AL: for remote alarm
the IV relay is switched ON when an alarm happens.
19.1.2 OAC=Li: light
The light is switched on pressing the DOWN key or when the door is opened
(if dIC=dor). It stays on for the OAt time. It can be switched off before the OAt
time by pressing the DOWN key or by closing the door. NOTE: with OAt=0 it
can be switched off only by pressing the DOWN key or by closing the door.
19.1.3 OAC=UL: UV light for a sterilisation cycle
It is used for a sterilisation cycle of the machine.
It can be enabled ONLY WHEN THE CONTROLLER IS NOT WORKING or
when a manual defrost is running.
The ultra violet light stays on for the OAt time. It can be switched off before
the OAt time by pressing the DOWN key.
NOTE: with OAt=0 it can be switched off only by pressing the DOWN key.
19.1.4 OAC=AA: to enable the resistor of anti condensation
It can be enabled by pressing the DOWN key. The resistor stays on for the
OAt time. It can be switched off before the OAt time by pressing the DOWN
key.
NOTE: with OAt=0 it can be switched off only by pressing the DOWN key.
19.1.5 OAC=iP to extract the insert probe by means of a resistor
heater
It can be enabled ONLY WHEN THE CONTROLLER IS NOT WORKING. To
extract the insert probe press the DOWN key for few seconds. The resistor
stays on for the OAt time. To switch it OFF before the OAt time, press the
DOWN key for few seconds. NOTE: with OAt=0 it can be switched off only by
pressing the DOWN key.
19.1.6 OAC=rE thermostat function
The IV relay works like a thermostat with the set point OAS and the
differential OAH. The kind of action is selectable by means of the OAH
parameter: with OAH<0, the action is for heating, with OAH>0 it is for
cooling. In this case the probe used for the regulation is selected by means
of the OAi parameter.
E.G. with OAi = rP; OAH>0
19.1.7 OAC = C2: as second compressor.
Second compressor operates on the following set: set + OAS. (whit set=
set loaded during the current phase). It starts oAt min. after the first
compressor
The following table shows how it works:
Cycle Holding
1c2=0 C1 ON; C2 On C1 on; C2 On
1c2=1 C1 on; C2 On C1 on C2 off
1c2=2 C1 on; C2 off C1 on; C2 On
1c2=3 C1 on; C2 off C1 off; C2 On
20. Digital configurable input.
The configurable input has 3 functions, selectable by means of the dIC
parameter
•dIC=EAL Signal a external alarm (after the dId time):buzzer enabled,
“EA” message on the display.
•dIC=bAL Signal a external serious alarm(after the dId time):buzzer
enabled, all the loads are switched OFF and the cycle is stopped, “CA”
message on the display. When the alarm recovers the controller is
placed in stand by mode.
•diC=dor: “door switch” input: the compressor and the fans are
stopped; if OAC=Li the light is switched on; after the dId time the buzzer
is enabled and the dA message is displayed.
21. ALARM SIGNALS
Mess. Cause Outputs
“EE” Data or memory
failure Alarm output ON; Other outputs unchanged
“rPF” Thermostat Probe
failure Alarm output ON; Compressor output
according to parameters “COn” and “COF”
“EPF” Evaporator Probe
failure Alarm output ON; Defrost termination is timed; No temperature control on fans.
“iPF” Insert probe failure Alarm output ON; Other outputs unchanged;
The cycle is made by time
“rtC” Real Time Clock data
lost Alarm output ON; Other outputs unchanged;
“rtF” Real Time Clock
failure Alarm output ON; Other outputs unchanged; The date and the duration of the cycle are not
available.
“HA” Maximum
temperature alarm Alarm output ON; Other outputs unchanged.
“LA” Minimum temperature
alarm Alarm output ON; Other outputs unchanged.

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Mess. Cause Outputs
“FF” Fast freezing
interrupted by short
power failure
Alarm output ON; The freezing cycle restart
from the same point at which was interrupted.
“PFA” Fast freezing
interrupted by long
power failure
Alarm output ON; The freezing cycle restart
from the current phase.
“OCF” Max duration of the
cycle is expired Alarm output ON; Other outputs unchanged. In any case the cycle ends when the final
temperature is reached
“EA” External alarm Alarm output ON; Other outputs unchanged.
“CA” Serious external
alarm Alarm output ON; Other outputs OFF.
“dA” Door open alarm Alarm output ON; Other outputs unchanged.
22. Technical data
Housing: self extinguishing ABS.
Case: frontal 185x38 mm; depth 70mm;
Mounting: panel mounting in a 150x31mm panel cut-out
Frontal protection: IP65
Connections: Screw terminal block ≤2,5mm2wiring.
Power supply: 230Vac, ±10%
Power absorption: 5VA max.
Display: 3 digits, red LED, 14,2 mm high.
Inputs: 3 PTC or NTC probes
Relay outputs:
compressor: relay SPST 20(8)A or 8(3) A, 250Vac
defrost:: relay 8(3)A, 250Vac
fans: relay SPST 8(3)A, 250Vac
IV relay: relay SPDT 8(3)A, 250Vac
Serial output: RS232 serial output for XB05PR printer connection
Data storing: on the non-volatile memory (EEPROM).
Operating temperature: 0÷60 °C.
Storage temperature: -30÷85 °C.
Relative humidity: 20÷85% (no condensing)
Measuring range: -55÷50 °C
Resolution: 0,1 °C or 1 °F (selectable).
Accuracy of the controller at 25°C: ±0,3 °C ±1 digit
23. Standard Value of the cycles.
Cy1: for fast chilling and conservation of foods at positive temperature
dbC = no iS2 = 5°C (41°F) rS3=-2°C (28°F)
iS1 = 20°C (68°F) rS2 =-2°C (28°F) Pd3 = OFF
rS1= -10°C (14°F) Pd2 = 2.0 h dbH = yes
Pd1 = 2.0 h iS3 = 3°C (37°F) HdS = 3°C (37°F)
Cy2: for chilling and fast freezing of foods with holding
dbC = no iS2 = 5°C (41°F) rS3=-30°C (-22°F)
iS1 = 10°C (50°F) rS2= -2°C (28°F) Pd3 = 2.0 h
rS1 = -10°C (14°F) Pd2 = 2.0 h dbH = YES
Pd1 = 2.0 h iS3=-18°C (0°F) HdS =-18°C (0°F)
Cy3: direct fast freezing with holding
dbC = no iS2=-18°C (0°F) rS3=-30°C (-22°F)
iS1 = -18°C (0°F) rS2=-30°C(-22°F) Pd3 = OFF
rS1=-30°C (-22°F) Pd2 =OFF dbH = yes
Pd1 = 4.0 iS3 =-18°C (0°F) HdS = -18°C (0°F)
Cy4: direct fast freezing without holding
dbC = no iS2=-18°C (0°F) rS3=-30°C (-22°F)
iS1 =-18°C (0°F) rS2=-30°C (-22°F) Pd3 = OFF
rS1=-30°C (-22°F) Pd2 =OFF dbH = no
Pd1 = 4.0 iS3=-18°C (0°F) HdS = OFF
24. Standard Values of the parameters.
Lab Description XB570L
°C/°F
Regulation
Hy differential 2/4
AC Anti-short cycle delay 1
1c2 Second compressor configuration 0
rPO Thermostat probe calibration 0
EPP Evaporator probe presence yes
EPO Evaporator probe calibration 0
iPP Insert probe presence yes
iPO Insert probe calibration 0
CF Temperature measurement unit °C/°F
rES Resolution (for °C): dE
PAU Time of stand by 0
PFt Maximum acceptable duration of power failure 15
iPd Temperature difference for the automatic recognition of the insert probe 3/6
iPt Time delay for the automatic recognition of the insert probe 60
Con Compressor ON time with faulty probe 15
COF Compressor OFF time with faulty probe 10
diC Digital input operating mode EAL
diP Digital input polarity CL
did Digital input delay 5
OAC AUX output configuration AL
OAP AUX output polarity CL
OAt AUX output timer 0
OAS Set point for AUX output 0/32
OAH Differential for AUX output 2/4
OAi Probe selection for the AUX output rP
Defrost
tdF Defrost type rE
dPO Defrost before holding cycle no
IdF Interval between defrost cycles 6.0
dtE Defrost termination temperature 8/46
MdF Maximum length for defrost 20
dFd Temperature displayed during defrost rt
Fdt Drip time 0
Fans
FnC Fan operating mode c_n
FSt Fan stop temperature 30
AFH Differential for the stop temperature and for the alarm 2/4
Fnd Fan delay after defrost 2
Alarm
ALU MAXIMUM temperature alarm 30/60
ALL Minimum temperature alarm 30/60
ALd Temperature alarm delay 15
EdA Alarm delay after defrost 30
tbA Silencing alarm relay y
Others
Ad1 Address 1 for RS485: 0
Ad2 Address 2 for RS485 1
Lod Local display rP
rEd Remote display iP
LOC Keypad LOCK no
PAS Security code set up 321
tPb Type of probe (readable only) ntc
rEL Release code (readable only) --
Ptb Parameter code (readable only) --
Dixell S.p.A.
Z.I. Via dell’Industria, 27
32010 Pieve d’Alpago (BL) ITALY
tel. +39 - 0437 - 98 33 - fax +39 - 0437 - 989 313
E-mail: [email protected] - http://www.dixell.com