Ascon tecnologic X35 User manual

Ascon Tecnologic - X35- - OPERATING INSTRUCTIONS - PAG. 1
X35
DIGITAL ELECTRONIC
REFRIGERATION UNITS
CONTROLLER
OPERATING INSTRUCTIONS
21/11 - cod.: ISTR_M_X35-_E_00_--
ASCON TECNOLOGIC S.r.l.
Viale Indipendenza 56, 27029 - VIGEVANO (PV) ITALY
Tel.: [phone] - Fax: [phone]
http:\\www.ascontecnologic.com
[email protected]
PREFACE
mThis manual contains the information necessary for
the product to be installed correctly and also instruc-
tions for its maintenance and use; we therefore
rEcommend that the utmost attention is paid to the
following instructions and to save it.
This document is the exclusive property of
Ascon Tecnologic
S.r.l. which forbids any reproduction and divulgation, even
partially, of the document, unless expressly authorized.
Ascon Tecnologic S.r.l. reserves the right to make any formal
or functional changes at any moment and without any notice.
Ascon Tecnologic S.r.l. and its legal representatives do not
assume any responsibility for any damage to people, things
or animals deriving from violation, wrong or improper use or
in any case not in compliance with the instrument features.
mWhenever a failure or a malfunction of the device
may cause dangerous situations for persons, thing
or animals, please remember that the plant has to be
equipped with additional electromechanical devices
which will guarantee safety.
INDEX
1. Instrument description ............................................... 2
1.1 General description........................................................... 2
1.2 Front panel description ..................................................... 2
2. Programming ............................................................... 2
2.1 Fast Set Point programming.............................................. 2
2.2 Standard mode parameters programming ........................ 3
2.3 Parameter Protection Using a Password .......................... 3
2.4 Customized mode parameters programming
(parameters programming level) ....................................... 3
2.5 Reset parameters to default value .................................... 4
2.6 Keyboard lock function...................................................... 4
2.7 Setting the current time and date...................................... 4
2.8 Scheduling events at defined times (models with RTC).... 4
2.9 Displaying HACCP alarms (models with RTC) ................. 5
3. Usage Warnings .......................................................... 5
3.1 Admitted usage................................................................. 5
4. Installation warnings................................................... 5
4.1 Mechanical mounting........................................................ 5
4.1.1 Mechanical dimensions [mm] ............................................... 6
4.1.2 Panel cut-out......................................................................... 6
4.1.3 Mounting............................................................................... 6
4.2 Electrical connections ....................................................... 6
4.2.1 Electrical wiring diagram....................................................... 6
5. Functions ..................................................................... 7
5.1 ON/Stand-by function........................................................ 7
5.2 Normal, Eco and Turbo operating modes.......................... 7
5.2.1 “Normal/Eco” mode operation............................................... 7
5.2.2 Turbo/Normal/Eco mode operation....................................... 7
5.4 Digital Inputs ..................................................................... 8
5.5 Outputs and buzzer configuration ..................................... 9
5.6 Temperature control ........................................................ 10
5.7 Compressor protection function and power-ON delay .... 11
5.8 Defrost control................................................................. 11
5.8.1 Starting automatic defrosts................................................. 12
5.8.2 Manual defrost.................................................................... 13
5.8.3 Defrost ends ....................................................................... 13
5.8.4 Defrosts in event of evaporator probe error ........................ 14
5.8.5 Defrost display lock............................................................. 14
5.8.6 Pre- and post-defrost output............................................... 14
5.8.7 Hot-gas defrost in centralized systems............................... 14
5.9 Evaporator fans control................................................... 15
5.10 Alarm functions ............................................................... 16
5.10.1 Temperature alarms............................................................ 16
5.10.2 External alarms (digital inputs) ........................................... 17
5.10.3 Open door alarm................................................................. 17
5.11 HACCP function (alarm recording) ................................. 17
5.11.1 HACCP temperature alarms............................................... 18
5.11.2 HACCP power failure alarms (black-out) ............................ 18
5.11.3 HACCP alarms from digital input........................................ 18
5.12 Functioning of keys and /Aux ................................ 18
5.13 Clock programmable events............................................ 19
5.14 RS485 Serial Interface.................................................... 19
6. Accessories ............................................................... 20
6.1 Parameters configuration by “A01”.................................. 20
6.2 Parameters configuration using an NFC Device ............. 20
6.3 TVR Y remote display ..................................................... 20
7. Programmable parameters table.............................. 21
8. Problems and maintenance...................................... 27
8.1 Notifications .................................................................... 27
8.1.1 Error messages .................................................................. 27
8.1.2 Other messages ................................................................. 27
8.2 Cleaning.......................................................................... 27
8.3 Disposal .......................................................................... 27
9. Warranty and Repairs ............................................... 27
10. Technical data............................................................ 27
10.1 Electrical characteristics ................................................. 27
10.2 Mechanical characteristics.............................................. 28
10.3 Functional features ......................................................... 28
11. How to order .............................................................. 28

Ascon Tecnologic - X35- - OPERATING INSTRUCTIONS - PAG. 2
1. INSTRUMENT DESCRIPTION
1.1 General description
The X35 model is a digital electronic microprocessor control-
ler that can be used typically for refrigeration applications.
It has ON/OFF temperature control and defrost control at
defined times (Real Time Clock Defrosting), at time inter-
vals, by arrival at temperature or by length of time of continu-
ous compressor operation through stopping the compressor,
electric heating or hot gas/cycle inversion.
The instrument has up to 4 relay outputs, up to 4 inputs
configurable for PTC, NTC and Pt1000 temperature probes,
and 2 digital inputs. It can be also equipped with an RS485
serial communication interface with MODBUS-RTU com-
munication protocol, a calendar clock (Real Time Clock)
and an NFC interface for parameters programming.
The calendar clock allows to program defrosting events, auxiliary
output switching, control Set Point changes, instrument ON/OFF,
etc. at pre-set times (max. 14 daily and 98 weekly events).
A furher feature of the calendar clock instrument version is
the HACCP function which can store the last 10 occurred
alarms (alarm type, start, duration and temperature peaks).
Two Digital Inputs are always available and, as an alter-
native to Pr3 and Pr4 temperature probe inputs, two other
digital inputs can be configured.
1.2 Front panel description
P
U
X35
1
5
3
2
4
10
9
12 7
13
6
11
8
1. Key: Used to set the Set Point (press and release)
and to program the function parameters (pressed for 5 s).
In programming mode is used to enter at parameters
edit mode and confirm the values. In programming mode
can be used together with the key to change the
programming level of the parameters. When the keyboard
is locked pressed together with the button for 5 s (or
pressed alone for 9 s) key to unlock the keyboard.
2. /Aux Key: In programming mode is used for decreas-
ing the values to be set and for selecting the parameters.
Hold pressed for 1 s, while in Normal mode, it can also be
programmed via parameter t.Fb to carry out other func-
tions such as selecting the Eco mode, activating the Aux
output, etc. (see functions of keys / and /Aux ”).
3. /Key: In Normal mode can be used to start/stop a
manual defrost (pressed for 5 s). In programming mode
is used to increase the value to be set and to select
the parameters. In programming mode, can be used,
together with key to change parameters level. Pressed
together with key for 5 s allows the keyboard unlock.
4. /Key: Press and release the key to display the
instrument variables (measured temperatures etc.). In
programming mode press for 2 s to return in Normal
mode. Hold pressed for 1 s, while in Normal mode, it
can also be programmed via parameter t.uF to carry out
other functions such as turn ON/OFF (stand-by) the de-
vice, activate the Aux output, etc. (see functions of keys
/ and /Aux).
5. LED SET: During the normal operating mode, signals
that a key has been pressed. In programming mode
indicates the programming level of the parameters: not
protected (ON), protected (flashing).
6. LED - COOL: Indicates the control output status (com-
pressor or temperature control device) when the istru-
ment is programmed for cooling operation: on (on), off
(off) or inhibited (flashing).
7. LED - HEAT: Indicates the control output status (com-
pressor or temperature control device) when the istru-
ment is programmed for heating operation: on (on), off
(off) or inhibited (flashing).
8. LED
:Indicates: Defrost in progress (on) or drainage
time in progress (flashing).
9. LED
:Shows the Evaporator Fan(s) output status: on
(on), off (off) or inhibited (flashing).
10. LED
:Shows the Alarm active status (on), off (off) and
Acknowledged or Lached (flashing).
11. LED Aux: Shows the Auxiliary output status: on (on), off
(off) or inhibited (flashing).
12. LED :Indicates that the internal clock is running.
If it is steady lit, the current time is presumably correct.
If flashing slowly, it means that there is a clock error
(clock chip not working).
If flashing rapidly, means the clock battery is drained.
13. LED Stand-By: When the instrument is in Stand-by
mode is the only lit LED.
2. PROGRAMMING
2.1 Fast Set Point programming
The normal mode to program the Set Points is done by mo-
mentarily pressing the key, the display shows SP (or SPE
or SPH) alternated to the programmed value. To change the
value shown press the key to increase its value or to
decrease it.
However, through parameter t.Ed is possible to determine
whether and which Set Points can be modified with the fast
mode. t.Ed is programmable between 0(OFF) and 6:
0. oF - No Set Point can be changed with this procedure
(the pression of the
key has no effect);
1. Only SP (normal Set Point) can be adjusted;
2. Only SPE [Eco (Eco) Set Point] can be adjusted;
3. Both SP and SPE can be adjusted;
4. Only the Active Set Point (SP/SPE) can be adjusted;
5. Can be adjusted SP and SPH (Turbo or, if independent,
the Heating Set Point);
6. Can be adjusted SP, SPE and SPH.
For example, if the parameter t.Ed = 1or 3, the procedure is
as follows:
–Press and release key
, the display shows SP alternated
to its value;
–To modify the Set Point, press the keys
/ to increase/
decrease its value;
–If only the SP (t.Ed = 1) is changeable, once reached the
desired value, press the
key to exit the Set Point pro-
gramming mode;
–If also the SPE is programmable (t.Ed = 3), the procedure
is not ended and at the pressure the instrument does
not exit the Set Point programming procedure, but displays
SPE alternated to its value ready for changes;
–To modify the Eco Set Point, press the keys
/ to in-

Ascon Tecnologic - X35- - OPERATING INSTRUCTIONS - PAG. 3
crease/decrease its value;
–Once the desired value is reached press the key
to exit
Set Point programming mode;
–If the Turbo (or independent heating) Set Point can also be
set (t.Ed = 6) by pressing and releasing the key
again,
the display shows SPH alternated with its value. Changes
are made with / keys as for the other Set Points.
Exiting the Set Point programming mode is achieved by
pressing the
key or automatically if no keys are pressed
for about 10 seconds. After that time the display returns to
the normal function mode.
2.2 Standard mode parameters programming
To access the instrument functional parameters when pas-
sword protection is disabled:
–Press the key and keep it pressed for about 5 s, after
which the display shows the code that identifies the first
group of programmable parameters (1st group = ]SP).
–Using the / keys select the desired parameters group,
then enter in that group pressing the key, the display
starts showing the code of the first parameter of the group.
–Using the / keys select the desired parameter and,
pressing the key, enter the change parameter mode
(the display alternately shows the parameter code and
its setting value) that allows to change the parameter
value with the and keys.
–Once the desired value has been set, press the key again:
the new value will be stored and the indstrument returns to
the group parameter list showing only the parameter code.
–Pressing the / keys it is possible to select another
parameter and change it as described.
–To return to the “Group selection mode” keep the key
pressed for 1 s until the instrument shows the group code.
–With / keys it is possible to select another group of
parameters and repeat the changing sequence.
–To exit the programming mode, press no keys for about 30 s
or keep the key pressed for 2 s until the controller exits
the programming mode.
PARAMETERS
(PROGRAM MODE)
PARAMETERS GROUP
(PROGRAM MODE)
SET PARAMETER
Previous
Parameter
Next
Parameter
Increase
Value
Decrease
Value
-50.0s.ls.
-25.5
NORMAL MODE
Hold
for 2 s
Hold
for 5 s
Previous
Group
Next
Group
]SP
Hold
for 2 s
2.3 Parameter Protection Using a Password
The instrument has a parameter protection function with a
password that can be customized using the t.PP parameter.
To protect the parameters, set the desired Password Number
at parameter t.PP and exit the programming procedure.
When the protection is active, keep the
key pressed for
about 5 s, after which the display shows r.P. Press again ,
the display shows 0.
Now, using the
/ keys, set the programmed password
number and press again the key.
If the password number inserted is correct, the display shows
the code that identifies the first group of programmable pa-
rameters and it will be possible to program the instrument in
the same ways described in the previous paragraphs.
The password protection can be disabled setting t.PP = oF.
PARAMETERS
(PROGRAM MODE)
INS. CORRECT
PASSWORD
0.R.P.
-25.5
PASSWORD
REQUEST
]
.Sp
NORMAL MODE
Hold
for 2 s
Hold for 5 s Increase
Value
Decrease
Value
Notes: 1. All parameters are configured by default as “pro-
tected” so that by simply setting the t.PP param-
eter they are all password protected.
2. If the Password gets lost, just switch OFF and
ON the instrument supply, push key during the
initial test and keeping the key pressed for 5 s.
In this way it is possible to have access to all the
parameters, verify and modify the parameter t.PP.
2.4 Customized mode parameters programming
(parameters programming level)
The password protection hides all the configuration pa-
rameters behind a factory set password to avoid unwanted
changes being made to the controller set up.
To make a parameter accessible without having to enter the
password when t.PP password protection is activate follows
this procedure:
–Enter the programming mode using the t.PP Password,
select the parameter that must be accessible with no pass-
word protection.
–Once the parameter has been selected, if the SET LED
blinks means that the parameter is programmable by
entering the password (is protected), if the SET LED is
steady lighted means that the parameter is programmable
without password (is not protected).
–To change the parameter visibility, press the key and keep-
ing it pressed also press the key. The SET LED changes
its state indicating the new parameter access level
(on = not protected; blinking = protected by password).
In case some parameters are not protected, accessing the
programming mode the display first shows the not protect-
ed parameters, then the r.p parameter and, after inserting
the password number, will be possible to access the pro-
tected parameters.
Previous
Parameter
Next
Parameter
SET
PA RAMETER
Increase
Value
Decrease
Value
35.0
-25.5
NOT Protected
PA RAMETERS
NORMAL MODE
Hold
for 2 s
Hold for 5 s
PARAMETERS
GROUP
(PROGRAM MODE)
INS. CORRECT
PASSWORD
Increase
Value
Decrease
Value
0.R.P.
PASSWORD
REQUEST
]SP
a.HI.
With regard to setting unprotected parameters, an exception
is HACCP alarm-related parameters (H.01, H.02 etc. which
are visible only when there are alarms stored in memory)
whose display level can be set via the t.HA parameter.
If t.HA = 1the parameters related to stored HACCP alarms

Ascon Tecnologic - X35- - OPERATING INSTRUCTIONS - PAG. 4
are visible only within the ]HA group (which can be displayed
like all other groups without a password if t.PP = oF or by
entering the selected t.PP password).
If t.HA = 2the parameters related to stored HACCP alarms
are visible both within the ]HA group (which can be dis-
played like all other groups without a password if t.PP = oF
or by entering the selected t.PP password) and as unpro-
tected parameters also if the password is active.
2.5 Reset parameters to default value
The instrument allows the reset of the parameters to those
values programmed in factory as default.
To restore the default parameters value set value -48 at r.p
password request.
Therefore, to make the reset to the default parameters, en-
able the Password using the t.PP parameter so that the r.p
setting is requested, at this point insert -48 instead of the
programmed access password number.
Once confirmed the password with the
key the display
shows “---” for 2 s after which the instrument resets all the
parameters to the factory default setting.
2.6 Keyboard lock function
On the instrument it is possible to completely lock the key-
board. This function is useful when the controller is in an
accessible area and changes must be avoided.
To activate the keyboard lock it is enough program the pa-
rameter t.Lo to a value different than oF.
The t.Lo value is the keys inactivity time after which the key-
board will be automatically locked.
Therefore, pressing no buttons for the time set at t.Lo, the
instrument automatically disable the normal keys functions.
When the keyboard is locked, if any of the key is pressed the
display shows LnLn to point out that the lock is active.
To unlock the keyboard it is enough to contemporarily press
+ keys and keep them pressed for 5 s (or the key
alone for 9 s), after which the label LFLF appears on the dis-
play and all the key functions will be available again.
2.7 Setting the current time and date
When the instrument is equipped with the internal calendar/
clock, this must be enabled and programmed to the current
time and day of the week using the c.CL parameter and to
the current date using the c.dt parameter.
After the c.CL parameter has been selected, press the
key
repeatedly to cycle through the following options:
h. + 2 digits for the hour of day in 24h format (e.g.: h.13);
n. + 2 digits for the minutes (e.g.: n.45);
d. + 1 digit for the day of the week (e.g.: d. 1);
oF Clock disabled.
The days of the week are numbered as follows:
d. 1 Monday;
d. 2 Tuesday;
d. 3 Wednesday;
d. 4 Thursday;
d. 5 Friday;
d. 6 Saturday;
d. 7 Sunday.
After selecting the c.dt parameter, press the
key repeat-
edly to cycle through the following options:
y. + 2 digits for the current year (e.g.: y.10);
M.+ 2 digits for the and current month (e.g.: M.05);
d. + 2 digits for the and current date (e.g.: d.31).
Increase
Value
Decrease
Value
Increase
Value
Decrease
Value
SET DAYSET MINUTES
Increase
Value
Decrease
Value
N.45h.13
SET HOUR
D. 1c.cl
CLOCK/CALENDAR
PA RAMETERS
Increase
Value
Decrease
Value
Increase
Value
Decrease
Value
SET DATESET MONTH
Increase
Value
Decrease
Value
y.10
SET YEAR
d.31c.DT
When the internal clock is running, the LED is lighted.
2.8 Scheduling events at defined times
(models with RTC)
The events are programmable through the 14 parameters
(c.01... c.14) contained in the ]CE group.
Exactly as for current time, because the parameters for time-
related functions require multiple values to be input, these
parameters are programmed in the following way:
After selecting the desired parameter, press the
key re-
peatedly to cycle through the following parameters:
h. + 2 digits for the hour of day in 24h format (e.g.: h.13);
n. + 2 digits for the minutes of the hour (e.g.: n.40);
d. + 1 digit for the day of the week (e.g.: d. 1);
t.. + 1 digit for the event type to be executed at the
programmed time (e.g.: t. 5).
The days of the week are numbered as follows:
d. 1 Monday;
d. 2 Tuesday;
d. 3 Wednesday;
d. 4 Thursday;
d. 5 Friday;
d. 6 Saturday;
d. 7 Sunday;
d. 8 Every day;
d. 9 Monday, Tuesday, Wednesday, Thursday, Friday;
d.10
Monday, Tuesday, Wednesday, Thursday, Friday, Saturday;
d.11 Saturday and Sunday;
d.oF No day (event disabled).
The instrument offers 14 event programming parameters,
allowing a maximum of 14 x 7 = 98 weekly events to be
scheduled (using d. 8).
For the event types that can be programmed, see the rel-
evant paragraph.
Previous
Event
Next
Event
SET MINUTES
N.40h.13
SET HOUR
Increase
value
Decrease
value
Increase
value
Decrease
value
c.01
]ce PA RAMETERS
EVENT TYPE
d. 1
SET DAY
T. 5
GROUP ]ce
Increase
value
Decrease
value
Increase
value
Decrease
value

Ascon Tecnologic - X35- - OPERATING INSTRUCTIONS - PAG. 5
2.9 Displaying HACCP alarms
(models with RTC)
The HACCP (Hazard Analysis and Critical Control Points)
function causes the instrument to record the last 10 alarms
that have occurred together with the information useful to de-
termine the criticality of the alarm. The function is available
only for those instruments equipped with the calendar clock.
The following HACCP alarms can be stored in memory:
HACCP alarm code Alarm
H1 Maximum temperature alarm H1
L1 Minimum temperature alarm L1
H2 Maximum temperature alarm H2
L2 Minimum temperature alarm L2
bo Power failure alarm (black-out)
AL Alarm from digital input
These Alarms are displayed using the same procedure as
for programming the parameters (parameters H.01 ÷ H.10
inside ]HA group).
As for the events scheduling or the time set, the time-related
functions parameters require multiple values to be input, also
the HACCP Alarms information are inserted in various field that
are to be scrolled to be displayed.
The Alarms info are contained in the ]HA group. To access
the alarm list, press the key while the instrument displays
]HA group acronym, to select the desired alarm (H.01... H.10)
use the / keys, then, press repeatedly to display the
alarm information (alarm code, time etc.).
The instrument shows:
–Alarm type (A. + 2 digits of the HACCP alarm code);
–Alarm start time HACCP
(y. = year, M. =month, d. = day, h. = hours, n. = minutes);
–HACCP alarm duration (E. = hours, e.= minutes);
–Critical temperature
(max. peak if Hi alarm or min. peak if Lo or other alarm).
These parameters are automatically sorted by the instru-
ment from the most recent (H.01) to the oldest (H.10) every
time an alarm is recorded or an alarm is canceled.
If the alarms exceed the number of 10, the instrument
deletes the data relating to the oldest alarm by overwriting
them with the information of the most recent one.
When this occurs, the instrument increases the value of
the H.dL parameter by one unit through which it is possible
to view the number of alarms that the instrument has been
forced to delete because they exceed the allowed memory.
Once the alarm parameter to be viewed has been selected,
the flashing label means that the alarm has never been dis-
played (therefore acknowledged).
To acknowledge an alarm, simply access the parameter
using the
key and view it. At the next display, the label of
the parameter will be fixed.
If the alarm is still in progress at the time of display, data are
shown but the alarm is not acknowledged.
In the presence of unacknowledged HACCP alarms (there-
fore also in progress) the instrument shows the HAC mes-
sage on the display alternated with the normal display.
Within the parameter, the data will be displayed sequentially
through subsequent presses of the
button. The alarm
is canceled if the button is held down for more than 5 s
while viewing one of the alarm data.
Similarly, it is possible to reset the value of the H.dL param-
eter by keeping the key pressed for more than 5 s while
the display shows the number of cleared alarms.
As regards the configuration and operation of the HACCP
alarms, see the relative paragraph.
Previous
Alarm
Next
Alarm
START MONTHSTART YEAR
y.12a.H1
ALARM TYPE
H.01
HACCP ALARMS
START MINUTESSTART HOUR
d.31
START DATE
n.40
Hi/Lo TEMP. PEAK
e.05
AL.ENDURANCE
(h)
AL.ENDURANCE
(min)
12.5
h.06
GROUP ]HA
3. USAGE WARNINGS
3.1 Admitted usage
m The instrument has been projected and manufactured
as a measuring and control device to be used accord-
ing to EN60730-1 at altitudes operation below 2000 m.
The use of the instrument for applications not expressly
permitted by the above mentioned rule must adopt all the
necessary protective measures.
The instrument MUST NOT BE USED in dangerous environ-
ments (flammable or explosive) without adequate protection.
The instrument used with NTC 103AT11 probe (identifiable
by the printed code “103AT-11” visible on the sensor part) or
Pt1000 is compliant with standard EN 13485 (“Thermom-
eters for measuring the air and product temperature for the
transport,storage and distribution of chilled, frozen, deep-
frozen/quick-frozen food and ice cream”) with the following
classification: [EN13485 air, S, A, 1,- 50°C +90°C].
Remember that the end user must periodically check and veri-
fy the thermometers in compliance with standard EN 13486.
The installer must ensure that EMC rules are respected, also
after instrument installation, if necessary using proper filters.
4. INSTALLATION WARNINGS
4.1 Mechanical mounting
The instrument, in case 78 x 35 mm, is designed for flush-
in panel mounting. Make a hole 71 x 29 mm and insert the
instrument, fixing it with the provided special brackets.
In order to obtain the declared front protection degree use the
screw type bracket (optional).
Avoid placing the instrument in environments with very high
humidity levels or dirt that may create condensation or intro-
duction of conductive substances into the instrument.
Ensure adequate ventilation to the instrument and avoid
installation in containers that house devices which may
overheat or which may cause the instrument to function at a
higher temperature than the one permitted and declared.
Connect the instrument as far away as possible from sourc-
es of electromagnetic disturbances such as motors, power
relays, relays, solenoid valves, etc.

Ascon Tecnologic - X35- - OPERATING INSTRUCTIONS - PAG. 6
4.1.1 Mechanical dimensions [mm]
P
U
X35
35
78
28
12.2
664
Blue: Fixed terminals
Red: Removable terminal
s
4.1.2 Panel cut-out
15 mm min.
12 mm min.
71+0.6 mm
29
+0.6
Recommended
panel cutout
4.1.3 Mounting
Panel max. 12 mm (#1) max. 29 mm (#2)
“Butterfly” type
brackets (#1)
Screw type
bracket (#2)
34
4386
4.2 Electrical connections
Carry out the electrical wiring by connecting only one wire to
each terminal, according to the following diagram, checking
that the power supply is the same as that indicated on the
instrument and that the load current absorption is no higher
than the maximum electricity current permitted.
As the instrument is built-in equipment with permanent con-
nection inside housing, it is not equipped with either switches
or internal devices to protect against overload of current: the
installation will include an overload protection and a two-
phase circuit-breaker, placed as near as possible to the in-
strument, and located in a position that can easily be reached
by the user and marked as instrument disconnecting
device which interrupts the power supply to the equipment.
It is also recommended that the supply of all the electrical
circuits connected to the instrument must be properly pro-
tected, using devices (ex. fuses) proportionate to the circulat-
ing currents.
It is strongly recommended that cables with proper insula-
tion, according to the working voltages and temperatures are
to be used.
Furthermore, the probe input cable must be kept separate
from line voltage wiring.
When a probe shielded cable is used, the protection shield
should be connected to ground at only one side.
For the electrical supply of the G(12... 24 VDC) type instru-
ments it is recommended to use an external TCTR transformer,
or with equivalent features and to use a transformer for each
instrument because there is no insulation between input and
power supply.
For the Xversion of the instrument (12 VDC power supply) it
is necessary to use a power supply capable of supplying the
indicated voltage.
m We recommended that a check should be made that
the parameters are those desired and that the ap-
plication functions correctly before connecting the
outputs to the actuators so as to avoid malfunctioning
that may cause irregularities in the plant that could
cause damage to people, things or animals.
4.2.1 Electrical wiring diagram
1234567891011 12 13 1415 16
Internal
Buzzer
Pr1 Pr2
DI1DI2 D+ D- GND
Pr3 Pr4
DI3DI4
Power
supply
Outputs
Inputs
RS485
2 A Gen.Use
10 A Res.
12 A Res. 30 LRA / 5 FLA
UL
X35-
Out2:
Out1:
Out3,4:
8 (3) A
16 (9) A10 (4) A
4 (4) A
2 (1) A5 (1) A
EN
61810
EN
60730 10
5
cycles, 0 ÷ 50°C
1718 1920 21 2223 2425 2627 28
NO
NO NO NO
NC
C
Out2
C
Out1
C
Out3
C
Out4
Serial
interface

Ascon Tecnologic - X35- - OPERATING INSTRUCTIONS - PAG. 7
5. FUNCTIONS
5.1 ON/Stand-by function
The instrument, once powered up, can assume 2 different
conditions:
– ON: The controller uses the control functions.
– Stand-by: The controller uses no control function and the
display is turned OFF except for the Stand-by LED.
The transition between Standby and ON status is equivalent
to power ON the instrument providing the electrical power.
If a power failure occours, when the voltage returns the system
always sets itself in the condition it was in before the black-out.
The ON/Stand-by function can be selected:
–Pressing the key
/ for at least 1 s if parameter
t.UF = 3or 5;
–Pressing the key
/AUX for at least 1 s if parameter
t.Fb = 3or 5;
–Using the digital input if parameter i.oF= 7or 15
(where ocan be 1... 4);
–By programming a programmable event through the clock
(if present).
5.2 Normal, Eco and Turbo operating modes
The instrument allows to pre-set up to 3 control Set Points:
SP Normal Set Point;
SPE Eco (economical) Set Point;
SPH Turbo Set Point.
Associated with each of them is the relative differential (hys-
teresis):
r.d Normal mode differential;
r.Ed Eco mode differential;
r.Hd Turbo mode differential.
The switching between these modes can be automatic or manual.
5.2.1 “Normal/Eco” mode operation
Thi operation mode can be used where it is necessary to
switch between two different operating temperatures
(e.g.: day/night or working days/holidays).
Normal/Eco mode can be selected manually:
–Pressing the
/ key if parameter t.UF = 2;
–Pressing the
/AUX key if parameter t.Fb = 2;
–By a digital input if parameter i.oF= 6
(where ocan be 1... 4);
Normal/Eco mode can be selected automatically:
–After the door has been closed for time i.Et (switching
from Normal to Eco);
–When the door is opened if the SPE Set Point is active
from parameter i.Et (switching from Normal to Eco);
–After the door has been closed for time i.tt since activa-
tion of the SPE Set Point from parameter i.Et (switching
from Eco to Normal);
–At defined times through the clock by programming events
t.6 (switch to Eco mode) and t.7 (switch to Normal mode).
For further information see the paragraph on programming
events through the clock.
Temp.
SPE
SP
Door
r.d
r.Ed
i.Et
time“Norm.”
DAY (Shop open) DAY (Shop open)NIGHT (Shop closed)
“Norm.” “ECO”
Pr1
Example of automatic switching between Eco mode and
Normal mode. During working hours the door is frequently
opened and the controller remains in Normal mode. When
the door has not been opened for time i.Et, the control-
ler switches to Eco mode. As soon as the door is opened
again, the controller reverts to Normal mode.
This function requires use of a digital input configured as
i.oF= 1, 2or 3(door open input).
If i.Et = oF the Eco/Normal mode selection via the digital
input configured as door, is disabled.
If i.tt = oF the Eco/Normal mode switching due to time-out
is disabled.
When switched in Eco mode, the label Eco is displayed.
If i.dS = Ec the display always shows the label Eco when the
instrument is in Eco mode. Otherwise the label Eco appears
approximatively every 10 seconds alternated with the normal
display set by the i.dS parameter.
The Eco mode selection is always combined with the turn
OFF the Auxiliary output function when used as a shop win-
dow light (o.Fo = 3).
Temp.
SPE
SP
r.d
r.Ed
i.tt (2) i.Et
time
i.Et (1)
Pr1
“Normal” “Normal”“ECO”
Notes: 1. i.Et time is reset all the times the door is opened.
In the case shown, the door is always closed.
2. i.tt time stops when the door is opened and
the
instrument immediately switches to Normal mode.
In the case shown, the door is always closed.
5.2.2 Turbo/Normal/Eco mode operation
Turbo mode can be selected manually:
–Pressing the
/ key if parameter t.UF = 4;
–Pressing the
/AUX key if parameter t.Fb = 4;
–By a digital input if parameter i.oF= 8
(where ocan be 1... 4).
Turbo mode can be selected automatically:
–Leaving Eco mode (only if r.HC = C3);
–Every time the instrument is turned ON (only if r.HC = C3
and Pr1 > SPE + r.Ed)
.
The instrument quits Turbo mode automatically when r.tC
time has elapsed or Turbo mode can be manually ended
using the programmed command (key or digital input); the
instrument always returns to Normal mode.
Turbo mode can be applied manually, for example when the
user wishes to lower the temperature of the products quickly
after loading the refrigerator. However, Turbo mode is ap-
plied automatically to restore product temperature at the end
of Eco mode.

Ascon Tecnologic - X35- - OPERATING INSTRUCTIONS - PAG. 8
Setting r.HC = C3 gives the following operating cycle:
Temp.
SPE
Eco
SP
SPH
T
urbo
r.Hd
r.Ed
i.tt (2) r.tCr.tC
time
Normal TurboECOTurbo
i.Et (1)
r.d
r.Hc = C3
Pr1
Notes: 1. i.Et time is reset all the times the door is opened.
In the case shown, the door is always closed.
2. i.tt time stops when the door is opened and
the
instrument immediately switches to Normal mode.
In the case shown, the door is always closed.
When switched ON, the instrument starts in the same mode
it was in when it was switched OFF (Normal or Eco) unless
the temperature at switch-on is higher than SPE + r.Ed. In
this case (see the previous figure) a Turbo cycle is automati-
cally started. After the r.tC time has elapsed, the instrument
automatically switches to Normal mode.
If the door is frequently opened the instrument remains in
Normal mode. If however the door is not opened for i.Et
time, it automatically switches to Eco mode. The instrument
remains in Eco mode until the door is opened again or, if set,
until the i.tt time-out has elapsed.
When leaving Eco mode, the instrument therefore runs a
Turbo cycle to allow the product temperature to be restored,
after which it reverts to Normal mode and so on.
When Turbo mode is ON, this is indicated by the characters
trb shown on the display alternated with the normal display.
The Normal SP Set Point can be set between the values
stored for S.LS and S.HS parameters (S.LS < SP < S.HS), Eco
Set Point SPE can be set between the values of SP and S.HS
(SP < SPE < S.HS) and the Turbo Set Point SPH can be set
between the values of S.LS and SP (S.LS < SPH < SP).
Note: In the examples that follow, the Set Point is generically
indicated as SP and the histeresis as r.d, however, op-
erationally, the instrument will act on the basis of the
Set Point and of the histeresis selected as active.
5.3 Measure inputs and display configuration
All parameters concerning measuring inputs are contained in
the ]In group.
With i.SE parameter it is possible to select the type of probe
connected to the instrument. Admitted types: thermistors
PTC KTY81-121 (Pt), NTC 103AT-2 (nt) or Pt1000 (P1).
With i.up parameter it is possible to select the temperature
measurement unit and resolution (C0 = °C/1°; C1 = °C/0.1°;
F0 = °F/1°; F1 = °F/0.1°).
The instrument allows the measuring to be calibrated, that
can be used for re-calibrating the instrument according to
application needs, through parameters i.C1 (for Pr1 input),
i.C2 (for Pr2), i.C3 (for Pr3) and i.C4 (for Pr4).
The usage of Pr2, Pr3 and Pr4 probes is defined by param-
eters i.P2, i.P3 and i.P4. These can be configured for the
following functions:
EP Evaporator Probe: used to manage the defrost and
the evaporator fans (see the relative paragraph);
Au Auxiliary Probe: can be used as a display-only probe
but it is also possible to assign it temperature alarms
(possible usages: product, antifreeze probe, etc.);
cd Condenser Probe: can be used as a display-only
probe but it is also possible to assign it temperature
alarms in order to signal condenser malfunctions
alarms (e.g. dirty/clogged condenser);
2E Evaporator Probe 2: The probe performs the func-
tions described later for controlling defrosts in the
second evaporator of twin-evaporator plants;
dG Digital input (see the Digital inputs functions);
oF Input not used, when Pr2 and/or Pr3 and/or Pr4 is/
are not used, set i.P2, i.P3, i.P4 to oF.
It is not possible to program more inputs for the same func-
tion (priority goes to lowest number input).
With i.Ft parameter it is possible to set a software filter related
to the input value measurement in order to decrease the sensi-
bility to rapid temperature variations (increasing the time).
With i.ds parameter it is possible to establish what is normally
shown on the display:
P1 Pr1 probe measurement;
P2 Pr2 probe measurement;
P3 Pr3 probe measurement;
P4 Pr4 probe measurement;
SP Active Set Point;
Ec The Pr1 probe measurement in normal mode and the
label Eco when in Eco mode;
oF Diplay switched OFF.
With i.CU parameter it is possible to program a measure
offset that is applied only to the temperature shown on the
display when i.dS= P1, P2, P3, P4, Ec (not to the control).
The corrections to the probe measurements applied to he
control procedure are those of calibration parameters.
Regardless of what has been set at i.dS parameter, it is
possible to view all the measurement variables by ciclically
pressing and releasing the
key. The display will alternate-
ly show the code that identifies the variable (see below) and
its value. The variables that can be displayed are:
Pr1 + Pr1 probe measure;
Pr2 + Pr2 probe measure;
Pr3 + Pr3 probe measure (oN/oF status if digital input);
Pr3 + Pr3 probe measure (oN/oF status if digital input);
Lt + The lowest temperature measured by Pr1 probe;
Ht + The highest temperature measured by Pr1 probe.
and, if the real time clock is enabled:
h. + 2 digits for the actual hour;
n. + 2 digits for the actual minutes;
d. + 2 digits for the actual day;
When the instrument is switched OFF, Pr1 peak values are
always reset. It is also possible to manually reset these
values pressing the key
for 3 s during peak visualization.
The display will show “---” and peak memory will be reset.
The istrument automatically exits the display variable mode
15 seconds after the last pressure on the
key.
Please remember that Pr1 probe data visualisation can be
changed by the defrost display lock function (parameter d.dL
see the Defrost function).
5.4 Digital Inputs
All parameters concerning the Digital Inputs are contained in
the ]In group.
The instrument has 2 voltage-free digital inputs whose func-
tion are defined by parameters i.1F and i.2F and whose
action can be delayed by the time period set with parameters

Ascon Tecnologic - X35- - OPERATING INSTRUCTIONS - PAG. 9
i.1t and i.2t.
In addition, the instrument may have 2 further voltage-free
digital inputs as an alternative to the measurement inputs
Pr3 and Pr4. In order to use these inputs digitally, the user
must set the relevant parameters i.P3 and/or i.P4 = dG.
The function performed by these digitally configured inputs
is defined by parameters i.3F and i.4F while their action is
instantaneous and cannot be delayed.
The parameters i.1F, i.2F, i.3F, i.4F can be configured for
the following functions:
0 No function;
1 Cell door opening sensor with NO contact: at input
closure the instrument alternately displays oP and the
variable set at i.dS parameter. This Digital Input func-
tion starts also the timer set with parameter A.oA elapsed
which the Open Door Alarm is activated. In addition, at
door opening, the controller returns to Normal mode if it
was in Eco mode and the Eco mode had been activated
by i.Et parameter;
2 Cell door opening sensor with fan stop with NO contact:
Similar to i.
o F= 1, but with fans stop function. Once
elapsed the A.oA interval the controller activates the Door
open Alarm and restarts the fans.
3 Cell door opening sensor with compressor and fan stop with
NO contact: Similar to i. o F= 2, but with compressor stop.
Once elapsed the A.oA interval the controller activates the
Door open Alarm and restarts the fans and the compressor;
4 External alarm signal with NO contact: at input closure the
alarm is activated and the instrument alternately shows
AL and the variable set at parameter i.dS.
5 External alarm signal with all control outputs disabled with
NO contact: at input closure the alarm is activated, all the
control output are disabled and the instrument alternately
shows AL and the variable set at parameter i.dS;
6 Normal/Eco mode selection with NO contact: at input
closure the Eco mode is activated. When instead the
contact is open Normal mode is activate.
7 Instrument ON/OFF (stand-by) selection with NO contact:
at input closure the instrument is switched ON while it is
placed in Stand-by mode when the digital input is open;
8 Turbo activation command with NO contact: at input clo-
sure the instrument starts a Turbo cycle;
9 AUX auxiliary output remote command of with NO contact:
at input closure the instrument activates the auxiliary
output as described in the o.Fo = 2operating mode of the
auxiliary output.
10 Disable recording of HACCP alarms with NO contact:
at input closure the instrument disables the recording of
HACCP alarms;
11 Reset recording of HACCP alarms with NO contact: at input
closure the instrument deletes all recorded HACCP alarms.
12 External PrA alarm signal and ot output disabled by
NO contact: at input closure the instrument deactivates
the output configured as ot and activates the alarm, the
instrument display shows PrA alternated with the variable
defined at i.dS parameter;
13 External HP alarm signal and ot output disabled by NO
contact:
at input closure the instrument deactivates the
output configured as ot and activates the alarm, the
instrument display shows HP alternating with the variable
defined at i.dS parameter.
14 External LP alarm signal and ot output disabled by NO
contact:
at input closure the instrument deactivates the
output configured as ot and activates the alarm, the
instrument display shows LP alternated with the variable
defined at i.dS parameter.
15 Forcing a programmed Switch-ON/Switch-OFF (Stand-
by) event with NO contact: the input closure of at least 1 s
switches the instrument from the ON to the Stand-by state
and vice-versa, until the next event. Therefore, if switch-
on/stand-by events are programmed using the clock, this
operation mode forces the state until the next event.
16 Defrost activation command with NO contact: at input
closure the instrument starts a defrost cycle;
17 End-Defrost command with NO contact: at input closure
if the defrost cycle is in progress the instrument stops it,
otherwise inhibits the defrost start;
18 Turbo cycle command with NO contact and mono-stable
command: at input closure the instrument starts a Turbo
cycle. Turbo mode remains active since the Digital Input
remains active and the r.tc time is elapsed. If the con-
tact is opened during r.tc time counting, the Turbo cycle
is interruppted. Elapsed the r.tc time count, in order to
start a new Turbo cycle it is necessay de-activate then
re-acivate the Digital Input.
19 Inhibition of events programmed by clock.
-1, -2, -3 etc.
Features identical to the above but obtained through
a NC contact and a reversed logic operation.
Note: Where multiple digital inputs are configured for the
same function, the instrument will treat the contacts
as if they were parallel (and consequently regard the
result as an OR function).
5.5 Outputs and buzzer configuration
All parameters concerning the outputs configuration are
contained in the ]Ou group.
The instrument outputs can be configured using parameters
o.o1, o.o2, o.o3, o.o4.
The outputs can be configured for the following functions:
ot Controls the compressor or however, the temperature
control device;
dF Controls the first defrost device;
Fn Controls the evaporator fans;
Au Controls the auxiliary device;
At Controls a silenceable alarm device through a contact
that is normally open and then closed when in alarm;
AL
Controls an alarm that cannot be silenced through a
contact that is normally open and closed when in alarm;
An Controls an alarm with a memory function through a
contact that is normally open and closed when in alarm.
-t Control a silenceable alarm device through a contact
that is normally closed and then open when in alarm;
-L
Control an alarm that cannot be silenced through a
contact that is normally closed and open when in alarm;
-n Control an alarm with a memory function through a
contact that is normally closed and open when in alarm;
on For controlling a device that must be active when the
instrument is ON. The output is therefore disabled
when the instrument is not powered or is in stand-by.
This mode of operation can be used as a lighting con-
trol for the showcase, anti-fog heaters or other utilities;
HE For controlling the heating device in neutral zone con-
trol mode (r.HC = nr);
2d Controls the second defrost device;

Ascon Tecnologic - X35- - OPERATING INSTRUCTIONS - PAG. 10
L1 Shop light output managed by Normal/Eco mode. The
output is ON in Normal mode and OFF in Eco mode
operation.
L2 Cell
internal light output managed by digital input. The
output is always OFF, it turns ON only from digital input
configured as door opening (i.oF= 1, 2, 3);
oF No function (Output disabled).
When the outputs are deactivated (o.o
o = oF), they can be
controlled from the serial port at the following addresses:
Hex. Address Description Output status
28E
Enable/Disable
OUT1 when o.o1 = oF
0 = Disable output;
1 = Enable output.
28F
Enable/Disable
OUT2 when o.o2 = oF
0 = Disable output;
1 = Enable output.
290
Enable/Disable
OUT3 when o.o3 = oF
0 = Disable output;
1 = Enable output.
291
Enable/Disable
OUT4 when o.o4 = oF
0 = Disable output;
1 = Enable output.
If one of the outputs is configured as Auxiliary (o.oo= Au) its
function is defined by the parameter o.Fo and the function is
conditioned by the time set at parameter o.tu.
The parameter o.Fo can be configured for:
oF Auxiliary output not active;
1 Control output with delayed activation: the auxiliary output
is activated after o.tu delay time from ot output activa-
tion; the auxiliary output is then turned OFF when ot is
disabled. This working mode can be used as a command
for a second compressor or other utilities with the same
ot output conditions, but which must be delayed after the
compressor start up to avoid excessive current absorption;
2 Output activated by front key ( /or /AUX), Digital Input
or Real Time Clock: the output is activated by pressing a key
or when suitably configured (t.UF or t.Fb = 1) or by a
digital input command if configured (i. o F= 9) or by an RTC
event. The commands by key or digital input have a bi-
stable (toggle) function. Bi-stable means that the 1st com-
mand turns ON the output, while the 2nd turns the output
OFF. In this mode, the AUX output can be turned OFF
automatically after the time set at o.tu parameter. When
o.tu = oF the output is activated and disabled only manu-
ally using a key ( or ), Digital Input or RTC ON/OFF
event, otherwise, the output, once activated, is turned
OFF automatically after the o.tu time. This function can
be used to manage, for example, the cell light, anti-fog
resistances or other utilities. If AUX output ON/OFF events
are programmed by Real Time Clock, the action of the
keys or Digital Input (in this AUX output mode) forces
output status until the next event.
3
Intake solenoid valve output. The output is used to control
the Hot-Gas intake valve in centralized systems (d.dt = HG)
defrost mode. The output configured in this way is perma-
nently activated during the temperature control operation,
while it is disabled during defrost and post-defrost to avoid
the introduction of hot gas into the intake line.
The internal buzzer can be configured with parameter o.bu
for the following functions:
oF Buzzer always disabled;
1 The buzzer is activated only to signal alarms;
2 The buzzer is activated briefly only to signal the keys
pressure (it does not signal alarms);
3 The buzzer is activated both to signal the alarms and the
keys pressure.
5.6 Temperature control
All parameters concerning the Temperature control functions
can be found in the ]re group.
The instrument control method is of ON/OFF type and acts
on the outputs programmed as ot and HE in response to:
Pr1 probe measurement, Set Point(s) SP (or SPE and/or
SPH) value(s), Intervention differential r.d (or r.Ed and/or
r.Hd) value and r.HC the operating mode.
Via the parameter r.HC the following functions can be obtained:
CCooling or HHeating
Depending on the function mode programmed with
parameter r.HC the differential is automatically consid-
ered by the controller with positive values for Cooling
control (r.HC = C) or negative values for Heating control
(r.HC = H).
SP
Temp.
r.d
time
offoff
SP r.d
time
ON
rHC
= C
rHC
= H
offoffON ON ON ON ON
Output
ot
Output
ot
Pr1
Temp.
Pr1
nr Neutral Zone or Cooling and Heating a single Set Point
When r.HC = nr, the output configured as ot operates
with a Cooling action (like r.HC = C) while the output
configured as HE operates with a heating action; both
the actions use the active Set Point (SP/SPE/SPH).
The intervention differential (r.d/r.Ed/r.Hd) is automati-
cally assumed by the controller to have positive values
for the Cooling action and negative values for the
Heating action.
SP
off off
ON
Temp.
time
r.d
r.d
offoff
r.Hc
= nr
ON
ON
HE
ot
Outputs
Pr1
HC Cooling and Heating with two independent Set Points
As in the previous case, when r.HC = HC the output
configured as ot operates with Cooling action (like
r.HC = C) while the output configured as HE operates
with Heating action. In this case, however, the Set
Point for the ot output is the active one (SP/SPE/SPH)
while for HE output the Set Point is SPH. The inter-
vention differential for ot output is the active differen-
tial (r.d/r.Ed/r.Hd) and is automatically assumed by the
controller to have positive values for the Cooling action
while for the output HE the differential is r.Hd consid-
ered with negative values as for the Heating actions.
In this mode, the activation of the Turbo cycle causes
the instrument to operate with Neutral Zone and SPH
Set Point.