Ascon tecnologic TLZ35 User manual

Ascon Tecnologic - TLZ35 - OPERATING INSTRUCTIONS - PAG. 1
TLZ35
MICROPROCESSOR-BASED
DIGITAL ELECTRONIC FREEZER
CONTROLLER
OPERATING INSTRUCTIONS
Vr. 03 (ENG) - 18/02 - cod.: ISTR-MTLZ35-ENG03
ASCON TECNOLOGIC S.rl.
Viale Indipendenza 56, 27029 - VIGEVANO (PV) ITALY
Tel.: [phone] - Fax: [phone]
http:\\www.ascontecnologic.com
[email protected]
PREFACE
 This manual contains the information necessary for
the product to be installed correctly and also instruc-
tions for its maintenance and use; we therefore recom-
mend that the utmost attention is paid to the following
instructions and to save it.
This document is the exclusive property of Ascon Tecnologic
S.rl. which forbids any reproduction and divulgation, even
partially, of the document, unless expressly authorized.
Ascon Tecnologic S.rl. reserves the right to make any formal
or functional changes at any moment and without any notice.
Ascon Tecnologic S.rl. 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.
 Whenever 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.
1. INSTRUMENT DESCRIPTION
1.1 General description
The TLZ 35 is a microprocessor digital controller typically
used in cooling applications with ON/OFF temperature
control and stop compressor defrost control at pre-set
time intervals.
The instrument has up to 2 relay outputs, 1 PTC or NTC
input for temperature probes and 1 configurable digital
input.
The 2 outputs can be used to control the compressor or the
temperature control device (OUT) and an alarm (AL).
The instrument is equipped with 4 program keys, a 4-digit
display and 3 LED signals, in addition to an internal
buzzer that is the sound system for alarms.
Other important characteristics of the instrument are: pro-
gram parameters protection using personalised password,
switching on and off (stand-by) of the instrument using the
front key, parameters configuration via the A01 device and
the possibility to power the instrument with mains between
100 ... 240 VAC.
Index
1. Instrument description ............................................... 1
1.1 General description........................................................... 1
1.2 Front panel description ..................................................... 2
2. Programming ............................................................... 2
2.1 Programming of the set point............................................ 2
2.2 Parameters programming ................................................. 2
2.3 Parameter protection using a password............................ 2
2.4 Parameters programming levels ....................................... 2
2.5 ON/Stand-by Function ...................................................... 2
3. Usage warnings........................................................... 3
3.1 Permitted use.................................................................... 3
4. Installation warnings................................................... 3
4.1 Mechanical mounting........................................................ 3
4.2 Dimensions ....................................................................... 3
4.3 Electrical connections ....................................................... 3
5. Functions ..................................................................... 4
5.1 Measuring and visualization.............................................. 4
5.2 Temperature control .......................................................... 4
5.3 Compressor protection function and power-on delay........ 4
5.4 Defrost control................................................................... 4
5.5 Alarm functions ................................................................. 5
5.6 Digital input ....................................................................... 5
5.7 Functioning of key ....................................................... 5
6. Accessories ................................................................. 6
6.1 Parameters configuration by “A01”.................................... 6
7. Programmable parameters table................................ 7
8. Problems, maintenance and warranty....................... 8
8.1 Notifications ...................................................................... 8
8.2 Cleaning............................................................................ 8
8.3 Warranty and Repairs ....................................................... 8
8.4 Disposal ............................................................................ 8
9. Technical data.............................................................. 8
9.1 Electrical characteristics ................................................... 8
9.2 Mechanical characteristics................................................ 8
9.3 Functional features ........................................................... 9
10. Instrument ordering code........................................... 9

Ascon Tecnologic - TLZ35 - OPERATING INSTRUCTIONS - PAG. 2
1.2 Front panel description
TLZ 35
-12.8.
DefOutAL
1
2
5
6
7
4
3
8
1 : Used for setting the Set point and for programming
the function parameters
2 : Used for decreasing the values to be set and for
selecting the parameters.
3 / : Used for increasing the value to be set, for select-
ing the parameters and for activating manual defrosting.
4 : It can be programmed via the parameter USrb to
turning ON and OFF (stand-by) the device. In hidden
parameter programming mode it is used to modify the
visibility of the parameters (see paragraph 2.4).
5 LED SET: Indicates the input in programming mode and
the programming level of the parameters. It also serves
to indicate the Stand-by status.
6 LED Out: Indicates the compressor output (or the
temperature control device) status: on (ON), off (OFF) or
inhibited (flashing).
7 LED DEF/ : Indicates defrosting in progress (ON) or
dripping (flashing).
8 LED AL: Indicates the alarm status (ON), off (OFF) and
silenced (flashing)
2. PROGRAMMING
2.1 Programming of the set point
Press the key then release it, the display will show SP
alternated with the Set Point value. To change it press the
key to increase the value or to decrease it.
These keys increase or decrease the value one digit at a
time, but if the button is pressed for more than one sec-
ond the value increase or decreases rapidly, and after two
seconds pressed, the speed increases even more to all the
desired valued to be reached rapidly.
Exiting the Set mode is achieved by pressing the key or
automatically if no key is pressed for 15 seconds. After that
time the display returns to the normal function mode.
2.2 Parameters programming
To access the instrument function parameters, press the
key and keep it pressed for about 5 seconds, after which
the LED SET lights up and the display shows the code that
identifies the first parameter.
Using the and keys, the desired parameter can be se-
lected and pressing the key, the display alternately shows
the parameter code and its setting that can be changed with
the and keys.
Once the desired value has been set, press the key again:
the new value will be stored and the display returns to show
only the code of the selected parameter.
Pressing the and keys is now possible to another pa-
rameter and change it as described.
To exit the programming mode, press no keys for about 20
seconds, or keep the or key pressed until the instru-
ment exits the programming mode.
2.3 Parameter protection using a password
The instrument has a parameter protection function using a
password that can be personalised through the PASS parameter.
To protect the parameters, set the desired password number
in the parameter PASS.
When the protection is active, press the key to access the
parameters and keep it pressed for about 5 seconds, after
which the LED SET starts flashing and the display shows 0.
At this point, using the and keys, set the password
number programmed and press the key .
If the password is correct, the display shows the code that
identifies the first parameter and it will be possible to pro-
gram the instrument in the same ways described in the previ-
ous section.
Protection using a password can be disabled by setting the
parameter PASS = OFF.
2.4 Parameters programming levels
The instrument has two parameter programming levels.
The first level (visible parameters) is accessed according
to the procedure described above (with or without password
request) while the second level (hidden parameters) can be
accessed according to the following procedure:
–Remove the power supply to the instrument, press the key
and, keeping it pressed, power ON again the instrument;
–After about 5 s the LED SET lights up, the display shows
the code that identifies the first parameter and will be
possible to set the instrument parameters using the same
programming procedure previously described.
–Once the parameter has been selected, if the SET LED is
ON, it can be programmed even on the first (visible) level.
–If SET is OFF, the parameter can only be programmed on
the hidden level (active now).
–To change the visibility of the parameter, press the key:
the SET LED changes its status indicating the accessibility
level of the parameter (ON = visible; OFF = hidden).
The access procedure to hidden parameters is useful if the
password set has been forgotten because allows to access
the PASS parameter and check or change it.
2.5 ON/Stand-by Function
The instrument, once powered up, can assume 2 different
conditions:
ON Means that the controller uses the control functions.
STAND-BY
Means that the controller does not use any control
function and the display is turned off except for the
green LED SET.
In case of power failure, the system always sets itself in the
condition it was in before the black-out.
The ON/Stand-by function can be selected using the key
if the parameter USrb = 1(see paragraph 5.7).

Ascon Tecnologic - TLZ35 - OPERATING INSTRUCTIONS - PAG. 3
3. USAGE WARNINGS
3.1 Permitted use
 The instrument has been projected and manufactured
as a measuring and control device to be used according
to EN61010-1 for the altitudes operation until 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 be used in danger-
ous environments (flammable or explosive) without adequate
protection.
The installer must ensure that EMC rules are respected, also
after the instrument installation, if necessary using proper filters.
 Whenever 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 devices which will guarantee safety.
4. INSTALLATION WARNINGS
4.1 Mechanical mounting
The instrument, in case 4 DIN Modules, is designed for
mounting on DIN OMEGA rail.
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..
4.2 Dimensions
4.2.1 Mechanical dimensions
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70 27 21 12
84 45 60
TLZ 35
-12.8.
DefOutAL
4.3 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 cir-
cuits connected to the instrument must be protect properly, us-
ing devices (ex. fuses) proportionate to the circulating currents.
It is strongly recommended the usage of cables with proper in-
sulation, according to the working voltages and temperatures.
Furthermore, the probe input cable must to be kept separate
from line voltage wiring. If the probe input cable is shielded,
the shield must be connected to the at only one side.
Whether the instrument is 12 V version it is recommended
to use an external TCTR transformer, or with equivalent fea-
tures, and to use only one transformer for each instrument
because there is no insulation between supply and input.
 It is strongly reccommended to check that the pa-
rameters are those desired and that the application
functions correctly before connecting the outputs to
the actuators so as to avoid malfunctioning that may
cause irregularities in the plant that could cause dam-
age to people, things or animals.
4.3.1 Electrical wiring diagram
Inputs
OUTAL
Power supply
SPST-NO 16A-AC1
SPDT 16A-AC1 SPDT 8A-AC1
PTC-NTC
Probe
Digital
input
Internal
Buzzer

Ascon Tecnologic - TLZ35 - OPERATING INSTRUCTIONS - PAG. 4
5. FUNCTIONS
5.1 Measuring and visualization
Through the SEnS parameter is possible to select the type
of probe connected to the instrument:
PTC Thermistors KTY81-121;
NTC Thermistors 103AT-2.
Once the probe type has been selected, through the param-
eter Unit is possible to select the measurement tempera-
ture unit (°C or °F) and, through dp parameter, the desired
measurement resolution (OFF = 1°; On = 0.1°).
Through the parameter OFS the instrument allows re-cali-
brate the measure in orfer to fit the application needs, .
Using FiL parameter can be set a software filter for measur-
ing the input values in order to decrease the sensibility to
rapid temperature changes (increasing the sampling time).
Must also be noted that the probe measure display can be
changed by the Defrost display lock function via the dLo
parameter (see paragraph 5.4).
5.2 Temperature control
The instrument controls the temperature with an ON/OFF
action and operates on the OUT output depending on the
probe measuring, the SP Set Point, the HSEt intervention
differential (Hysteresis) and the Func function mode.
Depending on the function mode programmed at Func param-
eter, the differential is automatically considered by the control-
ler with positive values for Cooling actions (Func = CooL) or
with negative values for Heating actions (Func = HEAt).
SP
Temp
.T
emp.
Hset
time
offoff
SP Hset
time
ON offoffON ON ON ON ON
outputoutput
HEAtCooL
In the event of probe error, it is possible to set the instrument
so that that the output OUT continues working in cycles
according to the times programmed in the parameter tonE
(activation time) and toFE (deactivation time).
If an error occurs on the probe the instrument activates the
output for the tonE time, then deactivates it for the toFE
time and so on whilst the error remains.
Programming tonE = OFF in probe error conditions the
output remains switched OFF.
Programming instead tonE to any value and toFE = OFF in
probe error conditions the output remains switched.
Remember that the temperature control function can be con-
ditioned by the Compressor protection function and delay at
power-on function described below.
5.3 Compressor protection function and
power-on delay
The Compressor Protection function aims to avoid repeated
compressor start-ups controlled by the instrument in Cooling
applications.
This function foresees a time control on the OUT output acti-
vation despite the requests of the temperature controller.
The protection consists of preventing the output being acti-
vated during the time set at the parameter PtC and counted
depending on what has been programmed at the parameter
PSC and therefore that any activation occurs only after the
PtC time has elapsed.
If during the power ON delay phase, the controller request
should disappear due to an inhibition caused by the com-
pressor protection function, the foreseen output start up is
naturally cancelled.
Using the parameter PSC is possible to set the type of com-
pressor protection and therefore from when the inhibition
time PtC must start. PSC parameter can be set as:
1 Power ON delay;
SP
Temp.
time
offoff off off
ON ON
HSet
PtC PtC
PSC = 1
PtC
ON
Output
2 Delay after power OFF;
offoff off
ON
SP
time
HSet
PtC PtC
PSC = 2
PtC
ON ON
Temp.
Output
3 Delay between power ON phases.
offoffoff
ON
SP time
HSEt
PtC PtC
PSC = 3
PP3
ON ON
Temp.
Output
The function is disabled by programming PtC = 0.
During the output power ON delay caused by the “Compres-
sor Protection” function, the LED OUT flashes.
It is also possible to prevent the output activation at instru-
ment power ON, for the time set at the parameter od. The
power ON delay function is disabled by od = OFF.
During the power ON delay phase the display shows the
indication od alternated to the normal visualisation.
5.4 Defrost control
5.4.1 Automatic defrosts
The automatic defrost control is achieved by stopping the
compressor and occurs according to this parameters:
dCt Defrost interval computation:
rt = Based on total functioning time (instrument ON);
ct = Based on compressor running time only (output ON).
dint Interval between defrost cycles;
dEFE Lenght of defrost cycles.
The instrument switches OFF the output for the time dEFE
at every dint time (of total time functioning if dCt = rt or of
compressor running time if dCt = ct).

Ascon Tecnologic - TLZ35 - OPERATING INSTRUCTIONS - PAG. 5
SP
Defrost
offoff
ON ON
Temp.
time
ON ON
HSet
dEFE
(Defrost)
dEFE
dint
dint
Example with dC = rt.
The occurring defrost cycle is pointed out by the LED .
Through parameters dLo, Etdu and dALd is possible to
define the display behaviour during defrost.
The dLo parameter locks the visualization on the last tempera-
ture reading (dLo = on) during all the defrost cycle until, at the
end of defrost, the temperature reaches the value [SP + Etdu]
or is ended the time set on parameter dALd.
Or it permits the visualization of label dEF (dLo = Lb) during
the defrost cycle and, after the defrost, of label PdEF until,
at the end of defrost, the temperature reaches the value
[SP + Etdu] or is ended the time set at parameter dALd.
When dLo = oFF the display continues showing the temper-
ature measured by the probe during the defrost cycle.
Note: The temperature alarms are disabled during the whole
defrost cycle and also afterwards for the time set at
the parameter dALd.
5.4.2 Manual defrost
To start a manual defrost cycle, press the / key when the
instrument is not in programming mode and keep it pressed
for about 5 s after which, if the conditions are correct, the
LED lights up and the instrument performsa defrost cycle.
The defrost cycle start/stop commands can also be given by
a correctly programmed the digital input (see paragraph 5.6).
5.5 Alarm functions
The alarm functions of the instrument act on the AL LED,
on the internal buzzer (if present) and on the AL output (if
present).
The buzzer is activated in alarm conditions and can be
disabled (alarm silencing) manually by pressing any of of the
instrument keys.
To Point out an alarm condition the instrument turns ON the
AL LED, to signal a silenced alarm condition it causes the
AL LED to flash,
The AL output is active in alarm status and cannot be disa-
bled manually, it is therefore disabled only when the alarm
status has ceased.
The alarm conditions of the instrument are:
–E1I/-E1 Probe errors;
–HI/LO Temperature alarms;
–External alarms AL.
5.5.1 Temperature alarms
The temperature alarms, that are relative type, work accord-
ing to the probe measurement, the alarm thresholds set
at parameters HAL (maximum alarm) and LAL (minimum
alarm) and the relative differential dAL.
Using some parameters it is also possible to delay the ena-
bling and the intervention of these alarms:
PAL Is the temperature alarm exclusion time on switching
on the instrument if the instrument is in alarm status
when it is switched on;
dALd Is the temperature alarm exclusion time at the end of
defrosting;
ALd Is the temperature alarm delay activation time.
The temperature alarm is enabled at the end of exclusion
time and is enabled after the ALd time when the temperature
measured by the probe exceeds the value [SP + HAL] or or
goes below the value [SP - LAL].
The maximum and minimum temperature alarms can be
disabled setting the relative parameters HAL/LAL = OFF.
At the same time as the signalling of the alarm device
(buzzer and AL output), the instrument signals the alarm by
turning ON the AL LED and shows on the display:
–The label HI alternated to the measured temperature for
maximum alarm;
–The label Lo alternated to the measured temperature for
the minimum alarm.
Temp.
HAL
SP
dAL
time
Alarm
ALA dAL
offoffoff ON ON
Hi Lo
5.5.2 External alarm
The instrument can signal an external alarm activated by the
digital input (when its function is programmed as diF = 3
see paragraph 5.6).
Simultaneously with the alarm signal (buzzer and/or output),
the instrument points out the alarm by turning on the AL
LED and showing on the display the label AL alternated to
the measured temperature.
5.6 Digital input
The digital input present on the instrument accepts free of
voltage contacts, the function carried out is defined by the
parameter diF can be configured for the following functions:
0Digital input not active;
1Defrost start command with NO contact: the input
closure causes the start of a defrost cycle;
2Defrost end command with NO contact: the input clo-
sure causes the end of the active defrost cycle or the
defrosts inhibition;
3External alarm signal with NO contact: closing the
input the alarm is activated and the instrument displays
the label AL alternated to the measured temperature;
-1 Defrost start command with NO contact: similar to
diF = 1but with reversed logic function;
-2 Defrost end command with NC contact: similar to
diF = 2but with reversed logic function;
-3 External alarm signal with NO contact: similar to
diF = 3but with reversed logic function.
5.7 Functioning of key
The key function can be defined by the parameter USrb
and can be configured for the following functions:
OFF The key carries out no function.
1Pressing the key for at least 1 second, it is possible to
switch the instrument from the ON status to Stand-by
status and vice versa.

Ascon Tecnologic - TLZ35 - OPERATING INSTRUCTIONS - PAG. 6
6. ACCESSORIES
The instrument is equipped with a 5-pole connector which
can be used to link some external accessories that allow to
perform some functions in “off-line” mode.
6.1 Parameters configuration by “A01”
The A01 device can be linked to the 5 poles connector to
transfer from and toward the instrument the functioning
parameters.
This device it is mainly usable for the serial programming of
some instruments which need to have the same parameters
configuration or to keep a copy of the parameters setting of an
instrument and allow its rapid retransmission.
The same device allows to connect a PC via USB with which,
through the appropriate configuration software for “AT Univer-
salConf tools”, the operating parameters can be configured.
To use the device A01 it is necessary that the device or instru-
ment are being supplied directly or through the key.
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AC supply
Supply adapter
12 VDC
Power
supply
Enter
PWS 12 V
A B C TTL
+-
USB to PC
USB
Enter
PWS 12 V
A B C TTL
+-
USB to PC
USB
TLZ 35
-12.8.
DefOutAL
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TLZ 35
-12.8.
DefOutAL
For additional info, please have a look at the A01 instruction
manual.

Ascon Tecnologic - TLZ35 - OPERATING INSTRUCTIONS - PAG. 7
7. PROGRAMMABLE PARAMETERS TABLE
Here below is a description of all the parameters available on the instrument. Some of them may not be present, either due
to the fact they depend on the type of instrument or because they are automatically disabled as unnecessary.
Parameter Description Range Default Note
1 SPLL Minimum Set Point -58.0 ÷ SPHL -50.0
2 SPHL Maximum Set Point SPLL ÷ 302.0 100.0
3 SEnS Probe Type Ptc Thermistors PTC KTY81-121;
ntc Thermistor NTC 103AT-2 Ptc
4 OFS Probe Calibration -30.0 ÷ 30.0°C/°F 0.0
5 Unit Unit of measurement °C Celsius degrees;
°F Farenheit degrees °C
6 dP Decimal point OFF 1°;
On 0.1° On
7 FiL Measurement filter OFF Function disabled;
0.1 ÷ 20.0 s 2.0
8 HSEt Differential 0.0 ÷ 30.0°C/°F 2.0
9 tonE Activation time OUT output for probe broken OFF Function disabled;
00.01 ÷ 99.59 min.s OFF
10 toFE Deactivation time OUT output for probe broken OFF Function disabled;
00.01 ÷ 99.59 min.s OFF
11 Func Function mode OUT output HEAt Heating;
CooL Cooling CooL
12 dint Defrosting interval OFF Function disabled;
00.01 ÷ 24.00 h.min 6.00
13 dEFE Lenght of defrost cycle 0.01 ÷ 99.59 min.s 30.00
14 dCt Defrosting intervals Counting mode rt Total time the instrument has been in ON status;
ct Total time the OUT output has been in ON status rt
15 dLo Defrost display Lock
OFF Not active;
On Lock on temperature before defrost;
Lb Lock on label dEF (during defrost) and PdEF (after post-defrost)
OFF
16 Etdu Differential display unlock after defrost 0.0 ÷ 30.0°C/°F 2.0
17 PSC Type of compressor protection
1Delay at switch ON of the compressor;
2Delay after switch OFF of the compressor;
3Delay between compressor starts
1
18 PtC Compressor protection time OFF Function disabled;
00.01 ÷ 99.59 min.s
OFF
19 od Delay at power on OFF Function disabled;
00.01 ÷ 99.59 min.s
OFF
20 HAL Relative High temperature Alarm threshold OFF Function disabled;
0.1 ÷ 100.0°C/°F OFF
21 LAL Relative Low temperature Alarm threshold OFF Function disabled;
0.1 ÷ 100.0°C/°F OFF
22 dAL Temperature Alarms Differential 0.0 ÷ 30.0°C/°F 2.0
23 ALd Temperature Alarms delay OFF Function disabled;
00.01 ÷ 99.59 min.s OFF
24 PAL Temperature Alarms delay at power on OFF Function disabled;
00.01 ÷ 24.00 h.min 2.00
25 dALd Temperature Alarms delay and unlock display
delay after defrost
OFF Function disabled;
00.01 ÷ 24.00 h.min 1.00
26 USrb Function mode key OFF None;
1ON/STAND-BY OFF
27 diF
Function and function logic of digital input.
-1, -2 and -3 functions, are the same of the
positive ones, but with inverse logic
0No function;
1Start defrost;
2Stop defrost;
3external alarm
0
28 PASS Access Password to parameter functions OFF Function disabled;
1 ÷ 9999 OFF
29 SP Set Point SPLL ÷ SPHL 0.0

Ascon Tecnologic - TLZ35 - OPERATING INSTRUCTIONS - PAG. 8
8. PROBLEMS, MAINTENANCE AND WARRANTY
8.1 Notifications
8.1.1 Error messages
Error Reason Action
E1 -E1
The probe may be interrupted
(E) or in short circuit (-E) or
may measure a value outside
the range allowed
Check the probe connec-
tion with the instrument
and check that the probe
works correctly
eepr Internal memory error
Check and if necessary
re-programme the param-
eters function
In probe error status, the OUT output behaves as set by the
parameters tonE and toFE.
8.1.2 Other messages
Message Reason
od Delay at power-on in progress
Hi Maximum temperature alarm in progress
Lo Minimum temperature alarm in progress
AL Digital Input alarm in progress
dEF Defrost in progress with dLo = Lb
PdF Post-defrost in progress with dLo = Lb
8.2 Cleaning
We recommend cleaning of the instrument only with a slightly
wet cloth using water and not abrasive cleaners or solvents.
8.3 Warranty and Repairs
The instrument is under warranty against manufacturing flaws
or faulty material, that are found within 18 months from deliv-
ery date. The warranty is limited to repairs or to the replace-
ment of the instrument.
The eventual opening of the housing, the violation of the instru-
ment or the improper use and installation of the product will
bring about the immediate withdrawal of the warranty effects.
In the event of a faulty instrument, either within the period
of warranty, or further to its expiry, please contact our sales
department to obtain authorisation for sending the instrument
to our company.
The faulty product must be shipped to Ascon Tecnologic with
a detailed description of the faults found, without any fees or
charge for Ascon Tecnologic, except in the event of alternative
agreements.
8.4 Disposal
The appliance (or the product) must be
disposed of separately in compliance
with the local standards in force on
waste disposal.
9. TECHNICAL DATA
9.1 Electrical characteristics
Power supply: 12 VAC/VDC, 24 VAC/VDC, 100… 240 VAC
±10%;
AC frequency: 50/60 Hz;
Power consumption: about 3 VA;
Inputs: 2 inputs for temperature probes:
PTC (KTY 81-121, 990W@ 25 °C)
NTC (103AT-2, 10 kW@ 25°C);
1 free of voltage digital input;
Output: Up to 2 relay outputs:
Out SPST-NO/SPDT (16A-AC1, 6A-AC3
250 VAC,1 HP 250 VAC, 1/2 HP 125 VAC)
AL SPDT (8AAC1, 3A-AC3 250 VAC,
1/2 HP 250VAC, 1/3 HP 125 VAC);
Relay output Electrical life:
OUT SPST-NO: 100000 operations;
SPDT: 50000 operations (VDE approval);
AL 100000 operations;
Installation category: II;
Measurement category: I;
Protection class against electric shock: Class II for Front
panel;
Isolation: Reinforced insulation between the low voltage
part (supply H type and relay outputs) and front panel; Re-
inforced insulation between the low voltage section (supply
type H and relay outputs) and the extra low voltage section
(inputs); Reinforced between supply and relay outputs; No
insulation between supply F type and inputs.
9.2 Mechanical characteristics
Case: Plastic, self-extinguishing degree: V-0 according to
UL 94;
Front protection: IP 40 for indoor locations according to
EN 60070-1;
Terminals protection: IP 20 according to EN 60070-1;
Installation: Omega DIN rail mounting;
Terminal block: 24 M3 screw terminals for cables of
0.25 ÷ 2.5 mm2 (AWG22 ÷ AWG14) with connection dia-
gram;
Dimensions: 70 x 84, depth 60 mm,
(2.76 x 3.31 x 2.36 in.) according to DIN43700;
Weight: 200 g max..
Connections: 0.2 ÷ 2.5 mm2/AWG 24 ÷ 14 cables;
Pollution degree: 2;
Operating temperature: 0 ÷ 50°C;
Operating humidity: 30 ÷ 95 RH% with no condensation;
Storage temperature: -25 ÷ +60°C.

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9.3 Functional features
Temperature Control: ON/OFF mode;
Defrost control: Interval cycles by stopping compressor;
Measurement range: NTC: -50 ÷ +109°C/-58 ÷ +228°F,
PTC: -50 ÷ 150°C/-58 ÷ 302°F;
Display resolution: 1° or 0.1° (range -99.9 ÷ +99.9°);
Overall accuracy: ±(0.5% fs + 1 digit);
Sampling rate: 130 ms;
Display: 4 Digit Red, height 12 mm;
Compliance: EMC Directive 2004/108/CE (EN55022: class
B; EN61000-4-2: 8kV air, 4kV cont.; EN61000-4-3: 10V/m;
EN61000-4-4: 2kV supply and relay outputs, 1kV inputs;
EN61000-4-5: supply 2kV com. mode, 1 kV\diff. mode;
EN61000-4-6: 3V),
LV Directive 2006/95/CE (EN 60730-1, EN 60730-2-9),
Approvals: C-UL (file n. E212227).
10. INSTRUMENT ORDERING CODE
MODEL
TLZ35 = Instrument with mechanical keyboard
a: POWER SUPPLY
H = 100... 240 VAC
L = 24 VAC/VDC
F = 12 VAC/VDC
b: OUT OUTPUT
S =
Out1 Relay SPDT 16A-AC1 (for resistive loads)
R = Out1 Relay SPST-NO 16A-AC1 (for resistive loads)
d: INTERNAL BUZZER
B = Buzzer present
- = Not present
c: AL OUTPUT
R = Out1 Relay SPST-NO 16A-AC1 (for resistive loads)
- = Not present
ee: CODES RESERVES; ff: CODES SPECIAUX
caTLZ35 bdee ff

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