Word Pro - MTLz12ENG1.lwp
TLZ 12
MICROPROCESSOR-BASED
DIGITAL ELECTRONIC FREEZER
CONTROLLER
OPERATING INSTRUCTIONS
Vr. 01 (ENG) - cod.: ISTR 06416
TECNOLOGIC S.p.A.
INDEX
1
1.1
1.2
2
2.1
2.2
2.3
2.4
2.5
3
3.1
3.2
3.3
3.4
4
4.1
4.2
4.3
INSTRUMENT DESCRIPTION
GENERAL DESCRIPTION
FRONT PANEL DESCRIPTION
PROGRAMMING
PROGRAMMING OF SET POINT
PARAMETERS PROGRAMMING
PARAMETER PROTECTION USING THE PASSWORD
PARAMETERS PROGRAMMING LEVEL
ON / STAND-BY FUNCTION
INFORMATION ON INSTALLATION AND USE
PERMITTED USE
MECHANICAL MOUNTING
ELECTRICAL CONNECTIONS
ELECTRICAL WIRING DIAGRAM
FUNCTIONS
MEASURING AND VISUALIZATION
TEMPERATURE CONTROL
COMPRESSOR PROTECTION FUNCTION AND DELAY
AT POWER-ON
4.4 DEFROST CONTROL
4.5 MANUAL DEFROST
4.6 ALARM FUNCTIONS
4.6.1 TEMPERATURE ALARMS
4.6.2 EXTERNAL ALARM
4.7 DIGITAL INPUT
4.8 FUNCTION OF KEY “U”
4.9 PARAMETERS CONFIGURATION BY KEY01
5
PROGRAMMABLE PARAMETERS TABLE
PROBLEMS , MAINTENANCE AND GUARANTEE
6
6.1 SIGNALLING
6.2 CLEANING
6.3 GUARANTEE AND REPAIRS
7
TECHNICAL DATA
7.1 ELECTRICAL DATA
7.2 MECHANICAL DATA
7.3 MECHANICAL DIMENSIONS, PANEL CUT-OUT AND
MOUNTING
7.4 FUNCTIONAL DATA
7.5 INSTRUMENT ORDERING CODE
1 - INSTRUMENT DESCRIPTION
1.1 - GENERAL DESCRIPTION
The model TLZ 12 is a digital controller with microprocessor that is
VIA INDIPENDENZA 56
typically used in cooling applications that have temperature control
with ON/OFF regulation and defrosting control with set time by
27029 VIGEVANO (PV) ITALY
means of stopping compressor.
TEL.: +39 0381 69871
The instrument has up to 2 relay outputs, one input for PTC or NTC
temperature probes and a digital input, that can be configured.
FAX: +39 0381 698730
The 2 outputs can be used for controlling the compressor or the
internet : http:\\www.tecnologic.it
temperature control device (OUT) and an alarm (AL).
e-mail: [email protected]
The instrument is equipped with 4 programme 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: programme
FOREWORD
This manual contains the information necessary for the product to parameters protection using personalised password, switching on
be installed correctly and also instructions for its maintenance and and off (stand-by) of the instrument using the “U” front key, configuuse; we therefore recommend that the utmost attention is paid to ration of parameters via the KEY 01 device and the possibility of
power supply in the range 100 ... 240 VAC.
the following instructions.
Though this manual has been issued with the greatest care, TECNOLOGIC S.p.A. will not take any responsibility deriving from its 1.2 - FRONT PANEL DESCRIPTION
use.
4
The same applies to each person or Company involved in the issuTLZ 12
ing of this manual.
3
This document is the exclusive property of TECNOLOGIC S.p.A.
7
which forbids any reproduction and divulgation , even in part, of the
2
document, unless expressly authorized.
6
1
TECNOLOGIC S.p.A. reserves the right to make any formal or
Out Def
AL
functional changes at any moment and without any notice.
8
5
1 - Key P : Used for setting the Set point and for programming the
function parameters
TECNOLOGIC - TLZ 12 - OPERATING INSTRUCTIONS - Vr.01 - ISTR 06416 - PAG. 1
2 - Key DOWN : Used for decreasing the values to be set and for
selecting the parameters.
3 - Key UP/DEFROST : Used for increasing the value to be set, for
selecting the parameters and for activating manual defrosting.
4 - Key U : It can be programmed via the parameter “USrb” to turning on and off (stand-by) the device. In the “hidden” parameter programming mode it’s used to modify the visibility of the parameters
(see par. 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 status (or the temperature control device) 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 P then release it and the display will show SP alternating with the set value.
To change it press the UP key to increase the value or DOWN 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 second 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 P 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’s function parameters, press the key P
and keep it pressed for about 5 seconds, after which the SET led
will light up, the display will visualised the code that identifies the
first parameter.
Using the UP and DOWN keys, the desired parameter can be selected and pressing the P key, the display will alternately show the
parameter code and its setting that can be changed with the UP
and DOWN keys.
Once the desired value has been set, press the key P again: the
new value will be memorised and the display will show only the
code of the selected parameter.
Pressing the UP and DOWN keys, it is possible to select another
parameter and change it as described.
To exit the programming mode, do not press any key for about 20
seconds, or keep the UP or DOWN key pressed until it exits the
programming mode.
2.3 - PARAMETER PROTECTION USING THE PASSWORD
The instrument has a parameter protection function using a password that can be personalised, through the “PASS” parameter.
If one wishes to have this protection, set the password number desired in the parameter “PASS”.
When the protection is working, press the P key to access the parameters and keep it press for about 5 seconds, after which the
LED SET will flash and the display will show “0” .
At this point, using the UP and DOWN keys, set the password
number programmed and press the key "P".
If the password is correct, the display will visualise the code that
identifies the first parameter and it will be possible to programme
the instrument in the same ways described in the previous section.
Protection using a password can be disabled by setting the parameter “PASS” = OFF.
while the second level (“hidden” password) can be accessed according to the following procedure.
Remove the power supply to the instrument, press the key P and
return power to the instrument, keeping the key pressed.
After about 5 sec. the SET led will light up, the display will show the
code that identifies the first parameter and it will be possible to set
the parameters of the instrument using the same programming procedure described previously.
Once the parameter has been selected and the SET is on, it means
that the parameter can be programmed even on the first level ("visible”).
If the LED is off it means that the parameter can only be programmed on this level (i.e. “hidden”).
To change the visibility of the parameter, press the key U: the led
SET will change status, indicating the accessibility level of the parameter (on = parameter “visible”; off = parameter “hidden”).
The access procedure for “hidden” parameters allows the “PASS”
parameter to be checked and changed, and is useful therefore if
the password set has been forgotten.
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 SET led.
If there is no power, and then power returns, 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 U if the
parameter "USrb" = 1 (see par. 4.8)
3 - INFORMATION ON INSTALLATION AND USE
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 ms. The use of the instrument for applications not expressly permitted by the above mentioned rule must adopt all the necessary protective measures. The
instrument CANNOT be used in dangerous 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.
3.2 - MECHANICAL MOUNTING
The instrument, in case 33 x 75 mm, is designed for flush-in panel
mounting. Make a hole 29 x 71 mm and insert the instrument, fixing
it with the provided special bracket. We recommend that the gasket
is mounted in order to obtain the front protection degree as declared. Avoid placing the instrument in environments with very high
humidity levels or dirt that may create condensation or introduction
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
sources of electromagnetic disturbances such as motors, power relays, relays, solenoid valves, etc.
3.3 - ELECTRICAL CONNECTION
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.
2.4 - PARAMETERS PROGRAMMING LEVELS
As the instrument is built-in equipment with permanent connection
The instrument has two parameter programming levels.
inside housing, it is not equipped with either switches or internal
The first level (“visible” parameters) is accessed according to the
devices to protect against overload of current: the installation will
procedure described above (with or without password request)
include an overload protection and a two-phase circuit-breaker, placed as near as possible to the instrument, and located in a position
TECNOLOGIC - TLZ 12 - OPERATING INSTRUCTIONS - Vr.01 - ISTR 06416 - PAG. 2
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 protect properly, using devices (ex. fuses) proportionate to the circulating currents.
It is strongly recommended that cables with proper insulation, according to the working voltages and temperatures, be used.
Furthermore, the input cable of the probe has to be kept separate
from line voltage wiring. If the input cable of the probe is screened,
it has to be connected to the ground with only one side.
Whether the instrument is 12 V version it’s recommended to use an
external transformer TCTR, or with equivalent features, and to use
only one transformer for each instrument because there is no insulation between supply and input.
We recommend that a check should be made that the parameters
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 damage to people, things or animals.
Tecnologic S.p.A. 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’s features.
3.4 - ELECTRICAL WIRING DIAGRAM
SPST-NO 16A-AC1
with positive values for a Refrigeration control (“Func”=CooL) or
with negative values for a heating control (“Func”=HEAt).
Temp.
Temp.
SP
HSEt
HSEt
SP
time
ON
OUT
ON
off
time
ON
ON
OUT
off
CooL
ON
off
ON
off
HEAt
In the event of probe error, it is possible to set the instrument so
that that the output “OUT” continues to work 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 time “tonE”, then deactivates it for the time “toFE” and so on
whilst the error remains.
Programming “tonE” = OFF lthe output in probe error condition will
remain switched off.
Programming instead “tonE” to any value and “toFE” = OFF the
output in probe error condition will remain switched on.
Remember that the temperature regulation function can be conditioned by the “Compressor Protection” function described below.
4.3 - COMPRESSOR PROTECTION FUNCTION AND DELAY AT
POWER-ON
SPDT 16A-AC1
The function “Compressor Protection” carried out by the machine
aims to avoid close start ups of the compressor controlled by the
TLZ 12
instrument in cooling applications.
NO NC
C
C
NO NC
INPUTS
This function foresees a time control on the switching on of the
“OUT” output associated with the temperature regulation request.
1 2 3 4 5 6 7 8 9 10 11 12
The protection consists of preventing the output being switched on
OUT
ALARM
during the time set in the parameter “PtC” and counted depending
SUPPLY
on what has been programmed in the parameter “PSC”, and therefore that any activation occurs only after the “PtC” time has
finished.
If during the power on delay phase, the regulator request should
PTC-NTC
PROBE DIG.
disappear, due to an inhibition caused by the compressor protection function, the foreseen start up of the output is naturally cancelled.
4 - FUNCTIONS
Using the parameter "PSC", it is possible to set the type of compressor protection and therefore from when the inhibition time “PtC”
4.1 - MEASURING AND VISUALIZATION
must start.
Via the parameter “SEnS” it is possible to select the type of probes The parameter “PSC” can be set as:
that one wishes to use and which can be: thermistores PTC = 1 : Power on delay
KTY81-121 (Ptc) or NTC 103AT-2 (ntc).
Tem p.
"P S C " = 1
Once the type of probe used has been selected, through the parameter “Unit”, it is possible to select the temperature unit of
HSEt
SP
measurement (°C or °F) and, through the parameter “dP”, the
resolution of the desired measurement (OFF=1°; On =0,1°).
ON
ON
ON
tim e
The instrument allows the measuring to be calibrated, that can be
used for re-calibrating the instrument according to application O U T o f f
o ff
o ff
o ff
needs, through the parameters “OFS”.
P tC
P tC
P tC
Using the parameter “FiL”, it is possible to set the time constant
for the software filter for measuring the input values to be able to
reduce the sensitivity to measurement disturbances (increasing the
= 2 : Delay after power off
time).
Please remember that visualisation of the probe can be changed
Tem p.
"P S C " = 2
by the display block in defrosting function too, by using the parameter “dLo” (see par. 4.4).
HSEt
NO
C
SPDT 5A-AC1
INTERNAL
BUZZER
SP
4.2 - TEMPERATURE CONTROL
The regulation of the instrument is ON/OFF and acts on the output
“OUT” depending on the measuring of probe, of the Set Point O U T
“SP”, the intervention differential “HSEt” and the function mode
“Func” .
Depending on the function mode programmed on the parameter
“Func” the differential is automatically considered by the regulator
ON
ON
o ff
P tC
ON
o ff
P tC
TECNOLOGIC - TLZ 12 - OPERATING INSTRUCTIONS - Vr.01 - ISTR 06416 - PAG. 3
tim e
o ff
P tC
= 3 : Delay between power on phases.
4.6 - ALARM FUNCTIONS
The alarm functions of the instrument work on the led AL, on the inTem p.
ternal buzzer (if present) and on the output AL (if present)
"P S C " = 3
The buzzer are activated in alarm conditions and can be disabled
HSEt
(alarm silencing) manually by pressing any key of the instrument .
SP
Any active alarm is shown on the instrument display with the lighting up of the AL led .
ON
ON
ON
tim e
Any silenced alarm status is shown by the AL led flashing .
OUT
o ff
o ff
o ff
The output AL are activated in alarm status but cannot be disabled
P tC
P tC
P tC
manually and are therefore only disabled when the alarm status
ceases.
The alarm conditions of the instrument are:
The function is disabled by programming “PtC” = 0.
During the power on delay phases of the OUT output by inhibiting - Probe errors “E1”, “-E1”
- temperature alarms “HI” and “LO”
the function “Compressor Protection” the led OUT flashes.
It is also possible to prevent activation of the output after the instru- - External alarms “AL”
ment is turned on, for the time set in the parameter “od”.
4.6.1 - TEMPERATURE ALARMS
The function is disabled by “od” = OFF.
During the power on delay phase, the display shows the indication The temperature alarms, that are relative type, work according to
the probe measurement, the alarm thresholds set in parameod, alternating with the normal programmed visualisation.
ters “HAL” (maximum alarm) and “LAL” (minimum alarm) and the
relative differential “dAL”.
4.4 - DEFROST CONTROL
The automatic control of defrost, that is by stopping compressor, Using some parameters it is also possible to delay the enablement and the intervention of these alarms.
occours according to this parameters:
These parameters are:
"dCt" : Defrost interval computation
“PAL” - is the temperature alarm exclusion time on switching on
- rt - based on real time (instrument on)
the
instrument if the instrument is in alarm status when it is
- ct - based only on compressor running time (output on)
switched on.
"dint" : Interval between defrost cycles
“dALd” - is the temperature alarm exclusion time at the end of
"dEFE" : Lenght of defrost cycles
defrosting.
The instrument switch off the output for the time “dEFE” each “dint”
“ALd” - is the temperature alarm delay activation time
time (of real time functioning if “dCt” = rt, or of compressor running
The temperature alarm is enabled at the end of exclusion time and
time if “dCt” = ct).
is enabled after the “ALd” time when the temperature measured by
Temp.
the probe exceeds the value [”SP”+”HAL”] or or goes below the
value [”SP”-”LAL”].
The maximum and minimum temperature alarms can be disabled
HSEt
by setting the relative parameters "HAL" and "LAL" = OFF.
SP
At the same time as the signalling of the alarm device (buzzer and
output AL), the instrument signals the alarm by turning on the led
ON
ON
ON
ON
time
light AL, and visualises on the display:
OUT
off
off
off
off
- Alternately HI and the measured temperature for maximum alarm
- Alternately LO and the measured temperature for the minimum
dEFE
dEFE
dint
dint
alarm
Defrost
(DEFROST)
T em p .
(ex. with “dC” = rt)
dA L
HAL
The occurring defrost cycle is signalized by the led DEF.
Through par. “dLo”,“Etdu” and “dALd” it’s possible to define the
display behaviour during defrost.
The “dLo” parameter pemits the display visualization lock on the
last temperature reading (dLo = On) during all the defrost cycle until, at the end of defrost, the temperature has not reached the value
[SP + Etdu] or is ended the time setted on par. "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 has not reached the value [SP +
Etdu] or is ended the time setted on par. "dALd".
The display will otherwise continue to visualize the temperature
measured by the probe during the defrost cycle (“dLo”= OFF).
Note that during defrosting, the temperature alarms are disabled
during the whole cycle and also afterwards for the time set in the
parameter “dALd” (see par. 4.6).
4.6.2 - EXTERNAL ALARM
The instrument can signal an external alarm by activating the digital
input with the function programmed as “diF” = 3 (see par. 4.7).
At the same time as the signalling of the alarm (buzzer and/or output), the instrument signals the alarm by turning on the led AL and
visualising AL and the measured temperature alternately on the
display.
4.5 - MANUAL DEFROST
To start up a manual defrosting cycle, press the key UP/DEFROST
when it is not in programming mode and keep it pressed for about
5 seconds after which, if the conditions are correct, the led DEF will
light up and the instrument will carry out a defrosting cycle.
The start up or switch off commands of a defrosting cycle can also
be given by the digital input that are correctly programmed (see
par. 4.7).
4.7 - DIGITAL INPUT
The digital input present on the instrument accepts contacts free of
voltage, the function carried out is defined by the parameter “diF”.
The parameter “diF” can be configured for the following functions:
= 0 - Digital input not active
= 1 - defrosting commencement command with contact normally
open: on closing the input a defrosting cycle is activated.
SP
LA L
dA L
ON
AL
o ff
HI
ON
o ff
LO
TECNOLOGIC - TLZ 12 - OPERATING INSTRUCTIONS - Vr.01 - ISTR 06416 - PAG. 4
tim e
o ff
2) connect the device to an instrument TLz having the same features of the one from which has been downloaded the desired configuration, plugging the special connector.
3) verify that the instrument or the device are supplied
4) observe the indication led on the device KEY 01: it has to result
green, because if the led results green blinking or red blinking, this
means that on the device it has not been downloaded any valid
configuration and therefore it’s useless to continue.
5) if the les results green, press the button placed on the device.
6) observe the indication led : after having pressed the button, the
led becomes red and therefore, at the end of the data transfer, it
becomes green.
7) now it is possible to disconnect the device.
For additional info, please have a look at the KEY01 instruction
4.8 - FUNCTIONING OF KEY “U”
The U key function can be defined by the parameter “USrb” and manual.
can be configured for the following functions:
5 - PROGRAMMABLE PARAMETERS TABLE
= OFF - The key U carries out no function.
= 1 - Pressing the key for at least 1 second, it is possible to switch
the instrument from the ON status to Stand-by status and vice Here below is a description of all the parameters available on the
instrument. Some of them may not be present, either due to the
versa.
fact they depend on the type of instrument or because they are
automatically disabled as unnecessary.
4.9 - PARAMETERS CONFIGURATION BY “KEY01”
= 2 - defrosting end command with contact normally open: on closing the input a defrosting cycle is ended if in progress or defrosting
is inhibited.
= 3 - External alarm signal with contact normally open: on closing
the input the alarm is activated and the instrument visualises AL
and the measured temperature alternately on the display.
= -1 - defrosting commencement command with contact normally
closed : similar to “diF”=1 but with function logic reversed.
= -2 - defrosting end command with contact normally closed : similar to “diF”=2 but with function logic reversed.
= -3 - External alarm signal with contact normally closed : similar to
“diF”=3 but with function logic reversed.
The instrument is equipped with a connector that allows the transfer from and toward the instrument of the functioning parameters
through the device TECNOLOGIC KEY01 with 5 poles connector.
This device it’s mainly useable for the serial programming of the instruments which need to have the same parameters configuration
or to keep a copy of the programming of an instrument and allow its
rapid retransmission.
To use the device KEY01 it’s necessary that the device or instrument are being supplied.
Instrument supplied and device not supplied
SUPPLY
Par.
Description
1 SPLL Minimum Set Point
2 SPHL Maximum Set Point
3 SEnS Probe Type
4 OFS Probe Calibration
5
6
7
Unit
dP
FiL
8
HSEt
9
tonE
10 toFE
11 Func
Instrument supplied from the device
12
dint
13 dEFE
SUPPLY ADAPTER
12 VDC
14
dCt
15
dLo
AC SUPPLY
To transfer the configuration of an instrument into the device (UPLOAD) it is necessary to proceed in the following way:
1) position both dip switch of KEY 01 in the OFF mode.
2) connect the device to the instrument TLZ plugging the special
connector.
3) verify that the instrument or the device are supplied
4) observe the indication led on the device KEY 01: if it results
green this means that a configuration is already loaded on the device while if it results green blinking or red blinking this means that
it has not been loaded any valid configuration on the device .
5) press the button placed on the device.
6) observe the indication led : after having pressed the button, the
led becomes red and therefore, at the end of the data transfer, it
becomes green.
7) now it is possible to disconnect the device.
To transfer the configuration loaded on the device onto an instrument of the same family (DOWNLOAD), it is necessary to proceed
in the following way:
1) position both dip switch of KEY 01 in the ON mode.
16 Etdu
17 PSC
18
PtC
19
od
20 HAL
21 LAL
Range
Def.
-58.0 ÷ SPHL -50.0
SPLL ÷ 302.0 100.0
Ptc - ntc
Ptc
-30.0 ÷ 30.0
0.0
°C/°F
Unit of measurement
°C - °F
°C
Decimal point
On - OFF
On
Measurement filter
OFF ÷ 20.0
2.0
sec
Differential
0.0 ÷ 30.0
2.0
°C/°F
Activation time output OFF ÷ 99.59 OFF
OUT for probe broken
min.sec
Deactivation time out- OFF ÷ 99.59 OFF
put OUT for probe
min.sec
broken
Function mode output HEAt - CooL CooL
OUT
Defrosting interval
OFF ÷ 24.00 6.00
hrs.min
Lenght of defrost cycle 0.01 ÷ 99.59 30.00
min.sec
Defrosting
intervals
rt - ct
rt
Counting mode:
rt = real time
ct = On OUT time
Defrost display Lock:
On - OFF - Lb OFF
OFF= display free
On= Lock on temperature before defrost
Lb= Lock on label “dEF”
(during defrosting) and
“PdEF”
(during
post-defrosting)
Differential display un- 0.0 ÷ 30.0
2.0
lock after defrost
°C/°F
Type of compressor
1-2-3
1
protection:
1= delay at switch on
2= delay after switch off
3= delay between starts
Compressor protection OFF ÷ 99.59 OFF
time
min.sec
Delay at power on
OFF ÷ 99.59 OFF
min.sec
Relative High tempera- OFF ÷ 100.0 OFF
ture Alarm threshold
°C/°F
Relative Low tempera- OFF ÷ 100.0 OFF
ture Alarm threshold
°C/°F
TECNOLOGIC - TLZ 12 - OPERATING INSTRUCTIONS - Vr.01 - ISTR 06416 - PAG. 5
Note
Alarms
22 dAL Temperature
Differential
23 ALd Temperature Alarms
delay
Alarms
24 PAL Temperature
delay at power on
Alarms
25 dALd Temperature
delay and unlock display delay after defrost
26 USrb Function mode key U:
OFF= No Function
1= ON/STAND-BY
27 diF Function and function
logic of digital input:
0 = No function
1= Start defrost
2= End defrost
3= External alarm
28 PASS Access Password to
parameter functions
29 SP Set Point
0.0 ÷ 30.0
°C/°F
OFF ÷ 99.59
min.sec
OFF ÷ 24.00
hrs.min
OFF ÷ 24.00
hrs.min
2.0
OFF
2.00
1.00
OFF / 1
OFF
-3 / -2 / -1 / 0
/1/2/3
0
OFF ÷ 9999
OFF
SPLL ÷ SPHL
0.0
6 - PROBLEMS, MAINTENANCE AND GUARANTEE
6.1 - SIGNALLING
Error Signalling:
Error
Reason
The probe may be interE1
rupted or in short circuit,
-E1
or may measure a value
outside
the
range
allowed
EEPr Internal memory error
Action
Check the correct connection of the probe with the
instrument and check the
probe works correctly
7 - TECHNICAL DATA
7.1 - ELECTRICAL DATA
Power supply: 12 VAC/VDC, 24 VAC/VDC, 100..240 VAC +/- 10%
Frequency AC: 50/60 Hz
Power consumption: 3 VA approx.
Input/s: 1 input for temperature probes: PTC (KTY 81-121, 990 Ω
@ 25 °C) or NTC (103AT-2, 10KΩ @ 25 °C); 1 digital input for free
voltage contacts
Output/s: up to 2 relay outputs: OUT SPST-NO (16A-AC1, 6A-AC3
250 VAC) or SPDT 16A-AC1, 6A-AC3 250 VAC) and AL SPST-NO
(5A-AC1, 2A-AC3 250 VAC).
Electrical life for relay outputs: OUT SPST-NO: 100000 op. ; SPDT:
50000 op. (om. VDE); AL: 100000 op.
Installation category: II
Measurement category: I
Protection class against electric shock: Class II for Front panel
Insulation: Reinforced insulation between the low voltage part
(supply H type and relay outputs) and front panel; Reinforced 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.
7.2 - MECHANICAL DATA
Housing: Self-extinguishing plastic, UL 94 V0
Dimensions: 33 x 75 mm, depth 64 mm
Weight: 115 g approx.
Mounting: Flush in panel in 29 x 71 mm hole
Connections: 2,5 mm 2 screw terminals block
Degree of front panel protection : IP 65 mounted in panel with
gasket
Pollution situation: 2
Operating temperature: 0 ... 50 °C
Operating humidity: 30 ... 95 RH% without condensation
Storage temperature: -10 ... +60 °C
Check and if necessary reprogramme the parameters function.
In probe error status, the output OUT behaves as set by the pa- 7.3 – MECHANICAL DIMENSIONS, PANEL CUT-OUT AND
rameters “tonE” and “toFE”.
MOUNTING [mm]
75
TLZ 12
Out Def
AL
64
min. 15 mm
6.2 - CLEANING
We recommend cleaning of the instrument with a slightly wet cloth
using water and not abrasive cleaners or solvents which may damage the instrument.
29
71
min. 12 mm
6.3 - GUARANTEE AND REPAIRS
The instrument is under warranty against manufacturing flaws or
faulty material, that are found within 12 months from delivery date.
The guarantee is limited to repairs or to the replacement of the instrument.
The eventual opening of the housing, the violation of the instrument
or the improper use and installation of the product will bring about
the immediate withdrawal of the warranty’s 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 TECNOLOGIC with a detailed description of the faults found, without any fees or charge for
Tecnologic, except in the event of alternative agreements.
28
Reason
Delay in switching on in progress
Defrosting in progress with “dLo”=Lb
Post-defrosting in progress with “dLo”=Lb
Maximum temperature alarm in progress
Minimum temperature alarm in progress
Digital input alarm in progress
5
33
Other Signalling:
Message
od
dEF
PdEF
HI
LO
AL
RECOMMENDED
PANEL CUTOUT
TECNOLOGIC - TLZ 12 - OPERATING INSTRUCTIONS - Vr.01 - ISTR 06416 - PAG. 6
BRACKETS
TYPE 2
34
31
43
86
74
BRACKET
TYPE 1
PANEL + GASKET
MAX 29 mm
MAX 12 mm
TYPE 2
PANEL + GASKET
TYPE 1
7.4 - FUNCTIONAL FEATURES
Temperature Control: ON/OFF mode
Defrost control: interval cycles by stopping compressor
Measurement range: PTC: -50...150 °C / -58 ... 302 °F;
NTC: -50...109 °C / -58...228 °F
Display resolution: 1 ° or 0,1°
Overall accuracy: +/- 0,5 % fs
Sampling rate: 130 ms.
Display: 4 Digit Red h 12 mm
Compliance: ECC directive EMC 2004/108/CE (EN 61326), ECC
directive LV 2006/95/CE (EN 61010-1)
7.5 - INSTRUMENT ORDERING CODE
TLZ 12 a b c d ee f
a : POWER SUPPLY
H = 100...240 VAC
L = 24 VAC/VDC
F = 12 VAC/VDC
b : OUTPUT OUT TYPE
S = Relay SPDT 16A-AC1
R = Relay SPST-NO 16A-AC1
c : ALARM OUTPUT
R = Relay
- = None
d : INTERNAL BUZZER
B = Yes
- = No
ee : SPECIAL CODES
f : SPECIAL VERSIONS
TECNOLOGIC - TLZ 12 - OPERATING INSTRUCTIONS - Vr.01 - ISTR 06416 - PAG. 7
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