Technologic TLK 43 Operating Instructions Manual

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 1

MICROPROCESSOR-BASED

DIGITAL

ELECTRONIC CONTROLLER

OPERATING INSTRUCTIONS

Vr. 02 (ENG) - cod.: ISTR 6267

TECNOLOGIC S.p.A.

VIA INDIPENDENZA 56

27029 VIGEVANO (PV) ITALY

TEL.: [phone]
FAX: [phone]

internet : http:\\www.tecnologic.it

e-mail: [email protected]

FOREWORD:

This manual contains the information necessary for the product to
be installed correctly and also instructions for its maintenance and
use; we therefore recommend that the utmost attention is paid to 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 use.
The same applies to each person or Company involved in the
issuing of this manual.
This document is the exclusive property of TECNOLOGIC S.p.A.
which forbids any reproduction and divulgation , even in part, of the
document, unless expressly authorized.
TECNOLOGIC S.p.A. reserves the right to make any formal or
functional changes at any moment and without any notice.

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 2

INDEX

1 INSTRUMENT DESCRIPTION

1.1 GENERAL DESCRIPTION

1.2 FRONT PANEL DESCRIPTION
2 PROGRAMMING

2.1 FAST PROGRAMMING OF THE SET POINT

2.2 SELECTION OF CONTROL STATE AND PARAMETERS

PROGRAMMING

2.3 PARAMETER PROGRAMMING LEVELS

2.4 CONTROL STATES

2.5 ACTIVE SET POINT SELECTION
3 INFORMATION ON INSTALLATION AND USE

3.1 PERMITTED USE

3.2 MECHANICAL MOUNTING

3.3 ELECTRICAL CONNECTIONS

3.4 ELECTRICAL WIRING DIAGRAM
4 FUNCTIONS

4.1 MEASURING AND VISUALIZATION

4.2 OUTPUT CONFIGURATION

4.3 ON/OFF CONTROL

4.4 NEUTRAL ZONE ON/OFF CONTROL

4.5 SINGLE ACTION PID CONTROL

4.6 DOUBLE ACTION PID CONTROL

4.7 PID CONTROL FOR MOTORIZED ACTUATORS WITH

TIME POSITIONING

4.8 AUTO-TUNING AND SELF-TUNING FUNCTIONS

4.9 CONTROL POWER LIMITATION

4.10 LIMITATION OF THE CONTROL POWER VARIATION
SPEED (MAXIMUM RATE OF RISE)

4.11 SPLIT RANGE FUNCTION

4.12 REACHING OF SET POINT AT CONTROLLED SPEED

A

ND AUTOMATIC COMMUTATION BETWEEN TW O

SET POINTS

4.13 SOFT-START FUNCTION

4.14 ALARM FUNCTIONS

4.14.1 ALARM OUTPUT CONFIGURATION

4.14.2 ALARM HYSTERESIS

4.15 HEATER BREAK ALARM FUNCTION

4.16 LOOP BREAK ALARM FUNCTION

4.17 FUNCTION OF KEY “U”

4.18 DIGITAL INPUT

4.19 RS 485 SERIAL INTERFACE

4.20 PARAMETERS CONFIGURATION BY KEY01

5 PROGRAMMABLE PARAMETERS

5.1 PARAMETERS TABLE

5.2 PARAMETERS DESCRIPTION
6 PROBLEMS , MAINTENANCE AND GUARANTEE

6.1 ERROR WARNINGS

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 MEASURING RANGE TABLE

7.6 INSTRUMENT ORDERING CODES

1 - INSTRUMENT DESCRIPTION

1.1 – GENERAL DESCRIPTION

TLK 43 is a “single loop” digital microprocessor-based controller,
with ON/OFF, Neutral Zone ON/OFF, PID single action, PID dual
action (direct and reverse) control, PID for motorized actuators with
time positioning control.
The instrument is equipped with AUTO-TUNING FAST function,

SELF-TUNING function and automatic calculation of the FUZZY
OVERSHOOT CONTROL parameter for PID control.
The PID control has a particular algorithm with TWO DEGREES OF
FREEDOM that optimises the instrument’s features independently

of the event of process disturbances and Set Point variations.

Furthermore, the instrument allows for RS485 serial communication
using MODBUS-RTU communication protocol and a transmission
speed up to 38.400 baud.
The process value is visualized on 4 red displays, the Set value is
visualized on 4 green displays while the outputs status is indicated
by 4 leds.
The instrument provides for the storage of 4 Set Points and can
have up to 4 outputs : relay type or can drive solid state relays type
(SSR), or it is also possible to have up to 2 analogue outputs.
The input is programmable and accepts temperature probes
(Thermocouples J,K,S,B,C,E,L,N,R,T; Thermo-resistances PT100,
Thermistors PTC and NTC; Infrared sensors mod. TECNOLOGIC
IRS) and normalized analogue signals (0/4..20 mA, 0/1..5 V, 0/2..10
V, 0..50/60 mV, 12..60 mV).
The instrument can be equipped with an input for the current
transformer, working as a Heater Break Alarm function and with a
programmable digital input as an alternative to output OUT4.
Other important available functions are: Loop-Break Alarm function,
control power limitation, limitation of the variation speed of the
control power, split-range, reaching of the Set Point at controlled
speed, ramp and dwell function, Soft-Start function, parameters
protection on different levels.

1.2 -

FRONT PANEL DESCRIPTION

1 - Key P : This is used to access the programming parameters and

to confirm selection.
2 - Key DOWN : This is used to decrease the values to be set and
to select the parameters. If the key is held down, the user returns to
the previous programming level until he exits the programming
mode. Outside the programming mode it permits visualisation of the
current measured by the TAHB input, on the SV display.
3 - Key UP : This is used to increase the values to be set and to
select the parameters. If the key is held down, the user returns to
the previous programming level until he exits the programming
mode. Outside the programming mode it permits visualisation of the
output control power, on the SV display.
4 - Key U : This is a key with a function programmable by par.
“USrb”. It can be set to : Activate Auto-tuning and Self-tuning
functions, swap the instrument to manual control, silence the alarm,
change the active Set Point, deactivate control.

5 - Led OUT1 : indicates the state of output OUT1
6 - Led OUT2 : indicates the state of output OUT2
7 - Led OUT3 : indicates the state of output OUT3
8 - Led OUT4 : indicates the state of output OUT4
9 - Led SET : when flashing, it indicates access to the programming

mode.
10 - Led AT/ST : indicates that the Self-tuning function is activated
(light on) or that Auto-tuning (flashing ) is in progress.

11 – Display PV : normally indicates the process value
12 - Display SV : normally indicates the active Set value, however it

can be programmed, using par. “diSP”, to visualize other values.

2 - PROGRAMMING

2.1 – FAST PROGRAMMING OF THE SET POINT

This procedure permits rapid programming of the active Set Point
and possibly the alarm thresholds (see par 2.3)

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 3

Push key “P”, then release it and the display will visualise “SP n”
(where n is the number of the Set Point active at that moment)
alternatively to the programmed value.
To modify the value, press “UP” key to increase it or the “DOWN”
key to decrease it.
These keys change the value one digit at a time but if they are
pressed for more than one second, the value increases or
decreases rapidly and, after two seconds in the same condition, the
changing speed increases in order to allow the desired value to be
reached rapidly.
Once the desired value has been reached, by pushing key P it is
possible to exit by the fast programming mode or it is possible to
visualise the alarm thresholds (see par. 2.3).
To exit the fast Set programming it is necessary to push key P, after
the visualisation of the last Set Point, or alternatively, if no key is
pressed for approx. 15 seconds, the display will return to normal
functioning automatically.

2.2 - SELECTION OF THE CONTROL STATE AND PARAMETERS
PROGRAMMING

By pushing key "P" and holding it down for approx. 2 sec. it is
possible to enter into the main selection menu.
Using the "UP" or DOWN” keys, it is then possible to roll over the
selections:

"OPEr"

to enter into the operating parameters menu

"ConF"

to enter into the configuration parameters menu

"OFF"

to swap the regulator into the OFF state

"rEG"

to swap the regulator into the automatic control state

"tunE"

to activate the Auto-tuning or Self-tuning function

"OPLO"

to swap the regulator to the manual control state
and therefore to program the % control value using

the “UP” and “DOWN” keys
Once the desired item has been selected, push key “P” to confirm.
Selecting "OPEr" and "ConF" gives the possibility of accessing other
menus containing additional parameters and more precisely :
"OPEr" – Operating parameters Menu: this normally contains the
Set Point parameters but it can contain all the desired parameters
(see par. 2.3).
"ConF" – Configuration parameters Menu: this contains all the
operating parameters and the functioning configuration parameters
(alarm configuration, control, input, etc.)
To enter the menu “OPEr”, select the option “OPEr” and press the
key “P”.
The display will now show the code identifying the first group of
parameters (“

]

SP “) and by pressing the “UP” and “DOWN” keys it

will be possible to select the group of parameters to be modified.
Once the desired group of parameters has been selected, the first
group will be visualised on the PV display while the code identifying
the first parameter will be visualised on the SV display, by pushing
the “P” key.
Again, by using the “UP” and “DOWN” keys, it is possible to select
the desired parameter and, if the key “P” is pressed, the display PV
will show the parameter’s code while the display SV will show its
programming value, which can be modified by using the “UP” or
“DOWN” keys.
Once the desired value has been programmed, push key “P” once
more: the new value will be memorised and the displays will show
again the code of the selected parameter and the group.
By using the “UP” or “DOWN” keys, it is then possible to select a
new parameter (if present) and modify it as described above.
To select another group of parameters, keep the “UP” or “DOWN”
key pressed for approx. 2 sec., afterwards the display SV will return
to visualise the code of the group of parameters.
Release the key and by using the “UP” and “DOWN” keys, it will be
possible to select a new group (if present).
To exit the programming mode, no key should be pressed for
approx. 20 seconds, or keep the “UP” or “DOWN” pressed until exit
from the programming mode is obtained.
To enter the menu "ConF" a PASSWORD is required.
At this request, enter, using keys “UP” and “DOWN”, the number
reported on the last page of this manual and push key “P”.

If an incorrect password is entered, the instrument returns to the
previous control state.
If the password is correct, the display SV will visualise the code
identifying the first group of parameters (“

]

SP “) and with keys “UP”

and “DOWN” it will be possible to select the desired group of
parameters
The programming and exit modes for the “ConF” menu are the
same as those described for menu “OPEr”.

2.3 – PARAMETERS PROGRAMMING LEVELS
The menu “OPEr” normally contains the parameters used to
program the Set Point; however it is possible to make all desired
parameters appear or disappear on this level, by following this
procedure:
Enter the menu “ConF” and select the parameter to be made
programmable or not programmable in the menu “OPEr”.
Once the parameter has been selected, if the LED SET is switched
off, this means that the parameter is programmable only in the
menu “ConF”, if instead the LED is on, this means that the
parameter is also programmable in the menu “OPEr”.
To modify the visibility of the parameter, push key “U” : the LED SET
will change its state indicating the parameter accessibility level (on =
menu ”OPEr” and “ConF”; off = menu “ConF” only).
The active Set Point and the alarm thresholds will only be visible on
the Set Point fast programming level (described in par. 2.1) if the
relative parameters are programmed to be visible (i.e. if they are
present in the menu “OPEr”).
The possible modification of these Sets, with the procedure
described in par. 2.1, is instead subordinate to what is programmed
in par. “Edit” (contained in the group “

]

PAn “).

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 4

This parameter can be programmed as :
=SE : The active Set Point can be modified while the alarm
thresholds cannot be modified.
=AE : The active Set Point cannot be modified while the alarm
thresholds can be modified
=SAE : Both the active Set Point and the alarm thresholds can be
modified
=SAnE : Both the active Set Point and the alarm thresholds cannot
be modified

2.4 – CONTROL STATE
The controller can act in 3 different ways : automatic control (rEG),
control off (OFF) and manual control (OPLO).
The instrument is able to pass from one state to the other :

- by selecting the desired state from the main selection menu suing
the keyboard.

- By using the key “U” on the keyboard; suitably programming par.
“USrb” (“USrb” = tunE; “USrb” = OPLO; “USrb” = OFF) it is possible
to pass from “rEG” state to the state programmed on the parameter
and vice versa.

- Automatically (the instrument swaps into "rEG" state at the and of
the auto-tuning execution)
When switched on, the instrument automatically reassumes the
state it was in when it was last switched off.
AUTOMATIC CONTROL (rEG) – Automatic control is the normal
functioning state of the controller.
During automatic control, on the SV display, it is possible to
visualize the control power on the display by pushing key “UP”.
The range of the power values goes from H100 (100% of the output
power with reverse action) to C100 (100% of the output power with
direct action).
CONTROL OFF (OFF) – The instrument can be swapped into the
“OFF” state, i.e. the control and the relative outputs are deactivated.
The alarm outputs are instead working normally.
BUMPLESS MANUAL CONTROL (OPLO) – By means of this
option it is possible to manually program the power percentage
given as output by the controller by deactivating automatic control.
When the instrument is swapped to manual control, the power
percentage, visualised on the SV display, is the same as the last
one supplied and can be modified using the “UP” and “DOWN”
keys.
In case of ON/OFF control, 0% corresponds to the deactivated
output while any value different from 0 corresponds to the activated
output.
As in the case of visualization, the programmable values range from
H100 (100% output power with reverse action) to C100 (100%
output power with direct action).
In case of motorized actuators with time positioning, the manual
control of the output is obtainable in the following way :

- By pushing the UP key, the opening of the actuator is driven

- By pushing DOWN key, the closing of the actuator is driven
For all time during which the manual control is active, “3 Pt” or
“OPEn” is visible on the lower display if the UP key is pressed or
“CLOS” if the DOWN key is pressed.
To return to automatic control, select "rEG" in the selection menu.

2.5 – ACTIVE SET POINT SELECTION

This instrument permits pre-programming of up to 4 different Set
points (“SP1”, “SP2”, “SP3”, “SP4”) and then selection of which
one must be active. The maximum number of Set points is
determined by the par. "nSP" located in the group of parameters “

]

SP “.

The active Set point can be selected :

- by parameter "SPAt" in the group of parameters “

]

SP “.

- by key “U” if par. "USrb" = CHSP

- by digital input if par. “diF” = CHSP or = SP1.2 or =HECo)

- Automatically between SP1 and SP2 if a time “dur.t” (see par.

4.12) has been programmed.
Set Points “SP1”, “SP2”, “SP3”, “SP4” will be visible depending on
the maximum number of Set Points selected on par. “nSP” and they
can be programmed with a value that is between the value

programmed on par. “SPLL” and the one programmed on par.

“SPHL”.
Note : in all the following examples the Set point is indicated as

"SP", however the instrument will act according to the Set point
selected as active.

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 DIN case 48 x 48 mm, is designed for flush-in
panel mounting.
Make a hole 45 x 45 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.
The instrument can be removed from its housing from the front side
: it is recommended that the instrument be disconnected from the
power supply when it is necessary to carry out this operation.

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.
As the instrument is built-in equipment with permanent connection
inside housing, it is not equipped with either switches or internal
devices to protect against overload of current: the installation will
include a two-phase circuit-breaker, placed as near as possible to
the instrument, 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 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.
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 spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 5

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

4 - FUNCTIONS

4.1 – MEASURING AND VISUALIZATION

All the parameters referring measurements are contained in the
group “

]

InP”.

By using par. “HCFG”, it is possible to select the input signal type
which may come: from a thermocouple (tc), a thermo-resistance or
a thermistor (rtd), from a transducer with normalised analogue
signal in current (I) or tension (UoLt) or also from a signal coming
from the communication serial line of the instrument (SEr).
Once the signal type has been selected, it is necessary to set the
type of input probe on par. “SEnS”, which can be :

- for thermocouples J (J), K (CrAL), S (S), B (b), C (C), E (E), L (L),
N (n), R (r), T (t) or for infrared sensors serie TECNOLOGIC IRS – A
range - with linearization J (Ir.J) or K (Ir.CA)

- for thermoresistances Pt100 IEC (Pt1) or thermistors PTC KTY81­121 (Ptc) or NTC 103AT-2 (ntc)

- for normalised signals in current 0..20 mA (0.20) or 4..20 mA
(4.20)

- for normalised signals in tension 0..50 mV (0.50), 0..60 mV (0.60),

12..60 mV (12.60), 0..5 V (0.5), 1..5 V (1.5), 0..10 V (0.10) or 2..10 V
(2.10).
We recommend that the instrument be switched on and off
whenever these parameters are modified, in order to obtain a
correct measurement.
For the instruments with input for temperature probes (tc, rtd) it is
possible to select the unit of measurement (°C, °F) through par.
“Unit”, and the desired resolution (0=1°; 1=0,1°) through par. “dP”.
Instead, with regards to the instruments with normalised analogue
input signals, it is first necessary to program the desired resolution
on par. “dP” (0=1; 1=0,1; 2=0,01; 3=0,001) and then, on par.
"SSC", the value that the instrument must visualise at the beginning
of the scale (0/4 mA, 0/12 mV, 0/1 V o 0/2 V) and, on par. "FSC",
the value that the instrument must visualise at the end of the scale
(20 mA, 50 mV, 60 mV, 5 V or 10 V).
In the case of infrared sensors (TECNOLOGIC IRS-"A" range), by
programming the sensor as "Ir.J" or "Ir.CA", the par. "rEFL" is also
present and it allows the correction of possible measuring errors
caused by the environment lighting and by the reflectivity of the
material. This parameter should be programmed with a high value if
the material to be measured is particularly bright / reflective and
must be reduced if the surface is particularly dark / not reflective,

keeping in mind however that for most materials, the recommended
value is within 1.00 and 0.80.
The instrument allows for measuring calibration, which may be used
to recalibrate the instrument according to application needs, by
using par. “OFSt” and “rot”.
Programming par. “rot”=1,000, in par. “OFSt” it is possible to set a
positive or negative offset that is simply added to the value read by
the probe before visualisation, which remains constant for all the
measurements.
If instead, it is desired that the offset set should not be constant for
all the measurements, it is possible to operate the calibration on
any two points.
In this case, in order to decide which values to program on par.
“OFSt” and “rot”, the following formulae must be applied :

“rot” = (D2-D1) / (M2-M1) “OFSt” = D2 - (“rot” x M2)
where:
M1 =measured value 1
D1 = visualisation value when the instrument measures M1
M2 =measured value 2
D2 = visualisation value when the instrument measures M2
It then follows that the instrument will visualise :

DV = MV x “rot” + “OFSt”
where: DV = visualised value MV= measured value
Example 1:

It is desired that the instrument visualises the value
effectively measured at 20° but that, at 200°, it visualises a value
lower than 10° (190°).
Therefore : M1=20 ; D1=20 ; M2=200 ; D2=190
“rot” = (190 - 20) / (200 - 20) = 0,944
“OFSt” = 190 - (0,944 x 200) = 1,2
Example 2:

It is desired that the instrument visualises 10° whilst the
value actually measured is 0°, but, at 500° it visualises a 50° higher
value (550°).
Therefore : M1=0 ; D1=10 ; M2=500 ; D2=550
“rot” = (550 - 10) / (500 - 0) = 1,08
“OFSt” = 550 - (1,08 x 500) = 10
By using par. “FiL” it is possible to program time constant of the
software filter for the input value measured, in order to reduce noise
sensitivity (increasing the time of reading).
In case of measurement error, the instrument supplies the power as
programmed on par. “OPE”.
This power will be calculated according to cycle time programmed
for the PID controller, while for the ON/OFF controllers the cycle
time is automatically considered to be equal to 20 sec. (e.g. In the
event of probe error with ON/OFF control and “OPE”=50, the control
output will be activated for 10 sec., then it will be deactivated for 10
sec. and so on until the measurement error remains.).
By using par. “InE” it is also possible to decide the conditions of the
input error, allowing the instrument to give the power programmed
on par. “OPE” as output.
The possibilities of par. “InE” are :
= Or : the condition occurs in case of over-range or probe breakage
= Ur : the condition occurs in case of under-range or probe
breakage
= Our : the condition occurs in case of over-range or under-range or
probe breakage
Using par. “diSP”, located in the group “

]

PAn”, it is possible to set

normal visualization of the SV display which can be the active Set
Point (SP.F), the control power (Pou), the Set Point operating when
there are active ramps (SP.o) or alarm threshold AL1, 2 or 3 (AL1,
AL2 or AL3).

4.2 - OUTPUT CONFIGURATION

The instrument’s outputs can be programmed by entering the group
of parameters “

]

O1”, “]O2”, “]O3”, “]O4”, where different

parameters (depending on the type of outputs –digital or analogue­available on the instrument) are located.
Note: In the following examples, the number of outputs is
generically indicated with n

- DIGITAL OUTPUTS relay or SSR type :

Within the selected group only the par. “OnF” will be present.
This parameter can be set for the following functions :
= 1.rEG : Main control output

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 6

= 2.rEG : Secondary control output
= ALno : Alarm output normally open
= ALnc : Alarm output normally closed
= OFF : Output deactivated
The coupling [outputs number – alarms number] can be effectuated
in the group relative to the alarm (“

]

AL1”,”]AL2” or “]AL3”).

- ANALOGICAL OUTPUTS 0/4..20 mA or 0/2..10 V (only OUT1,2):
The parameter “Aorn” will present within the group, with which it is
possible to set the beginning of the scale used for the output.
This parameter will therefore be set at:
= 0 : if one intends to use the beginning of the scale as equal to 0 (0
mA if the output is 0/4...20 mA, or 0 V if the output is 0/2...10 V)
= no_0 : if one intends to use the beginning of the scale other than 0
(4 mA if the output is 0/4...20 mA, or 2 V if the output is 0/2...10 V)
The parameter “AonF” will be present by which it is possible to
configure the function of the analogical output as:
= 1.rEG : Primary control output
= 2.rEG : Secondary control output
= r.inP : measurement retransmission output
= r.Err : error retransmission output [SP-PV]
= r.SP : Active Set Point retransmission output
= r.SEr : output led by serial communication line of the instrument
= OFF : deactivated output
In the case that analogical output is configured as 1.rEG or 2.rEG
the output signal will be proportional to the control power calculated
by the instrument starting from 0% (output signal corresponding to
the set beginning of the scale) up to 100% (output signal
corresponds to the maximum that can be supplied by the type of
output available).
The analogical control outputs can only be used for PID single
action or dual action controls.
If the set control mode was the ON/OFF type, the analogical output
could only take on the control states 0 % or 100 %.
In the case that the analogical output function should be configured
for the retransmission of the signal, it is therefore necessary to
programme another two parameters which set the minimum and
maximum reference values.
Therefore, in these cases, set the parameter "AonL" with the value
that the instrument must provide the minimum value (0/4 mA or 0/2
V) in output and the value to which the instrument must provide the
maximum value (20 mA o 10 V) to the parameter "AonH" in output.

4.3 – ON/OFF CONTROL (1rEG)

All the parameters referring to the ON/OFF control are contained in
the group “

]

rEG”.

This type of control can be obtained by programming par."Cont" =
On.FS or = On.FA and works on the output programmed as 1.rEG,
depending on the measure, on the active Set Point “SP”, on the
functioning mode "Func” and on the hysteresis "HSEt".
The instrument carries out an ON/OFF control with symmetric
hysteresis if “Cont" = On.FS or with asymmetrical hysteresis if
“Cont” = On.Fa.
The control works in the following way : in the case of reverse
action, or heating (“FunC”=HEAt), it deactivates the output, when
the process value reaches [SP + HSEt] in case of symmetrical
hysteresis, or [SP] in case of asymmetrical hysteresis and is then
activated again when the process value goes below value [SP ­HSEt]. Vice versa, in case of direct action or cooling ("Func”=CooL),
it deactivates the output, when the process value reaches [SP ­HSEt] in case of symmetrical hysteresis, or [SP] in case of
asymmetrical hysteresis and is activated again when the process
value goes above value [SP + HSEt].

4.4 – NEUTRAL ZONE ON/OFF CONTROL (1rEG - 2rEG)
All the parameters referring to Neutral Zone ON/OFF control are
contained in the group “

]

rEG”.

This type of control can be obtained when 2 outputs are
programmed respectively as 1rEG and 2rEG and the par. “Cont” =
nr .
The Neutral Zone control is used to control plants in which there is
an element which causes a positive increase (ex. Heater, humidifier,
etc.) and an element which causes a negative increase (ex. Cooler,
de-humidifier, etc).
The control functions works on the programmed outputs depending
on the measurement, on the active Set Point “SP” and on the
hysteresis "HSEt".
The control works in the following way : it deactivates the outputs
when the process value reaches the Set Point and it activates the
output 1rEG when the process value goes below value [SP - HSEt],
or it activates the output 2rEG when the process value goes above
[SP + HSEt].
Consequently, the element causing a positive increase has to be
connected to the output programmed as 1rEG while the element
causing a negative increase has to be connected to the output
programmed as 2rEG.

4.5 – SINGLE ACTION PID CONTROL (1rEG)

All the parameters referring to PID control are contained in the
group “

]

rEG”.

The Single Action PID control can be obtained by programming
par."Cont" = Pid and works on the output 1rEG depending on the
active Set Point “SP”, on the functioning mode "Func” and on the
instrument’s PID algorithm with two degree of freedom.

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 7

In order to obtain good stability of the process variable, in the event
of fast processes and with control by digital output, the cycle time
“tcr1” has to have a low value with a very frequent intervention of the
control output.
In this case use of a solid state relay (SSR) is recommended for
driving the actuator.
The Single Action PID control algorithm foresees the setting of the
following parameters :

"Pb" – Proportional Band
"tcr1" – Cycle time of the output 1rEG (digital output only)
"Int" – Integral Time
"rS" – Manual Reset (if “Int =0 only)
"dEr" – Derivative Time
“FuOC” - Fuzzy Overshoot Control

This last parameter allows the variable overshoots at the start up of
the process or at the changing of the Set Point to be avoided.
Please remember that a low value on this parameter reduces the
overshoot while a high value increase it.

1: Value “FuOC” OK
2: Value “FuOC” too high
3: Value “FuOC” too low

4.5 - DOUBLE ACTION PID CONTROLLER (1rEG - 2rEG)

All the parameters referred to PID control are contained into the
group “

]

rEG”.

The Double Action PID control is used to control plants where there
is an element which causes a positive increment (ex. Heating) and
an element which causes a negative increment (ex. Cooling).
This type of control is obtainable when 2 outputs are programmed
respectively as 1rEG and 2rEG and the par. “Cont” = Pid.
The element causing a positive increase has to be connected to the
output programmed as 1rEG while the element causing a negative
increase has to be connected to the output programmed as 2rEG.
The Double Action PID control works on the outputs 1rEG and 2rEG
depending on the active Set Point “SP” and on the instrument’s PID
algorithm with two degree of freedom.
In order to obtain a good stability of the process variable, in case of
fast processes and with control by digital outputs, the cycle times
“tcr1” and “tcr2” have to have a low value with a very frequent
intervention of the control outputs.
In this case it’s recommended to use solid state relays (SSR) to
drive the actuators.
The Double Action PID control algorithm needs the programming of
the following parameters :

"Pb" – Proportional Band
"tcr1" – Cycle time of the output 1rEG
“tcr 2” – Cycle time of the output 2rEG
"Int" – Integral Time
"rS" – Manual Reset (if “Int =0 only)
"dEr" – Derivative Time
“FuOC” - Fuzzy Overshoot Control
"Prat" - Power Ratio or relation between power of the element

controlled by output 2rEG and power of the element controlled by
output 1rEG.

4.7 - PID CONTROL FOR MOTORIZED ACTUATORS WITH TIME
POSITIONING (1rEG - 2rEG)

All the parameters concerning the PID control for motorised
actuators are contained in the group “

]

rEG”.

This type of control is used to control installations that have a
motorised actuator with digital opening and closing controls that
remain at the point they have reached if no command is received
and which are started up when 2 outputs are configured as 1rEG
and 2rEG respectively and the parameter “Cont” = 3 Pt is set.
The opening command for actuation will be supplied by the output
configured as 1rEG while the closing command will be supplied by
the output configured as 2rEG.
The PID type control for motorised actuators therefore acts on the
outputs 1rEG and 2rEG depending on the active Set point “SP” and
the result of the PID control algorithm with two degrees of liberty for
the instrument.
The control system used does not foresee a retroaction for finding
the current position of the actuator.
If the actuator is not fitted with safety stop contacts that interrupt the
actuator at the end of its run it is necessary to equip the installation
with these contacts (SQo, SQc) as shown in the diagram

The PID control algorithm for motorised actuators with time
positioning foresees the setting of the following parameters:

“Pb” - Proportional band
“Int” - Integral time
“rS” - manual reset (only if “Int =0)
“dEr” - Derivative time
“FuOC” - Fuzzy Overshoot Control
“tcor” - time of actuator run.

This is the time, expressed in seconds that is needed for the
actuator to pass from the “completely open” position to “completely
closed” position.
“SHrI” - Minimum control value.
It is the value that the control must have reached (in %) before it
has an effect on the output. It is needed to prevent the control from
intervening too frequently.
“PoSI” - Switch on position.
This is the position that the actuator must reach when the
instrument is switched on. It can have the following values :
nO = the actuator remains where it is,
oPEn = the actuator goes to the “completely open” position,
cLoS = the actuator goes to the “completely closed” position.
If the options "OPEn" or "CloS" are programmed, when it is turned
on the device with activate the output 1rEG (if "oPEn") or 2rEG (if
"cLoS") for the time set on parameter "tcor" after which control
begins.
In the event of an error in measurement, the outputs are activated
so that the valve moves to the position fixed by the parameter
“PoSI”.

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 8

4.8 – AUTO-TUNING AND SELF-TUNING FUNCTIONS

All the parameters referring to the AUTO-TUNING and SELF­TUNING functions are contained in the group “

]

rEG”.

The AUTO-TUNING and SELF-TUNING functions permit the
automatic tuning of the PID controller.
The AUTO-TUNING function permits the calculation of the PID
parameters by means of a FAST type tuning cycle and, at the end of
this operation, the parameters are stored into the instrument’s
memory and remain constant during control.
The SELF-TUNING function (rule based "TUNE-IN") instead allows
control monitoring and the continuous calculation of the parameters
during control.
Both functions automatically calculate the following parameters :

"Pb" – Proportional Band
"tcr1" – Cycle time of the output 1rEG
"Int" – Integral Time
"dEr" – Derivative Time
“FuOC” - Fuzzy Overshoot Control

and, for the Double Action PID control, also :

“tcr 2” – Cycle time of the output 2rEG
"Prat" - Ratio P 2rEG/ P 1rEG

To activate the AUTO-TUNING function proceed as follows :

1) Program and activate the desired Set Point.

2) Program par. "Cont" =Pid or =3 Pt if the instrument drives a
motorized actuator with time positioning.

3) Program par. "Func" according to the process to be controlled
through output 1rEG.

4) Program an output as 2rEG if the instrument controls a plant with
double action or a motorized actuator with time positioning.

5) Program par. "Auto" as:

- "1” – if auto-tuning is desired automatically, each time the
instrument is switched on, on the condition that the process value is
lower (with “Func” =HEAt) than [SP- |SP/2|] or higher (with “Func”
=CooL) than [SP+ |SP/2|].

- "2" – if auto-tuning is desired automatically, the next time the
instrument is switched on, on the condition that the process value is
lower (with “Func” =HEAt) than [SP- |SP/2|] or higher (with “Func”
=CooL) than [SP+ |SP/2|], and once the tuning is finished, the par.
“Auto” is automatically swapped to the OFF state

- "3" - if manual auto-tuning is desired, by selecting par. “tunE” in
the main menu or by correctly programming key “U” as “USrb” =
tunE. In this case the auto-tuning starts without any control on the
process value condition. It is recommended to use this option,
starting the auto-tuning when the process value is as far as possible
from the Set Point because, in order to feature the Auto-tuning
FAST with its best performances , it is preferable to respect this
condition.

- "4" - if it’s desired to activate the autotuning automatically at the
end of programmed Soft-Start cycle. The Autotuning will start at the
condition that the process value is lower (with “Func” =HEAt) than
[SP- |SP/2|] or higher (with “Func” =CooL) than [SP+ |SP/2|].

6) Exit from the parameter programming.

7) Connect the instrument to the controlled plant.

8) Activate the Auto-tuning by selecting par. “tunE” in the main
menu (or by correctly programming key “U” ).
At this point the Auto-tuning function is activated and is indicated by
the flashing led AT/ST.
The regulator carries out several operations on the connected plant
in order to calculate the most suitable PID parameters.
If “Auto” = 1 or “Auto” = 2, and if, at the Auto-tuning start, the
condition for the lower process value is not found (with “Func”
=HEAt) than [SP- |SP/2|] or higher (with “Func” =CooL) than [SP+
|SP/2|], the display will show “ErAt” and the instrument will be
swapped to normal control conditions according to the previously
programmed parameters.
To make the error “ErAt” disappear, swap the instrument to the OFF
control (OFF) and then turn it to automatic control (rEG).
The Auto-tuning cycle duration has been limited to 12 hours
maximum.
If Auto-tuning is not completed within 12 hours, the instrument will
show "noAt" on the display.

In case of probe error, the instrument automatically stops the cycle
in progress.
The values calculated by Auto-tuning are automatically stored in the
instrument’s memory at the end of the correct PID parameters
tuning.
Note : The instrument is already programmed in our factory to carry
out auto-tuning at every instrument switch on ("Auto" = 1).
To activate the SELF-TUNING function proceed as follows

1) Program and activate the desired Set Point.

2) Program par. "Cont" =Pid.

3) Program par. "Func" according to the process to be controlled
through output 1rEG.

4) Program an output as 2rEG if the instrument controls a dual­action plant

5) Program par. "SELF" = yES

6) Exit from the parameter programming.

7) Connect the instrument to the controlled plant.

8) Activate Self-tuning selecting par. “tunE” in the main menu (or
by correctly programming key “U”).
When the Self-tuning function is active, the led AT/ST is
permanently lit up and all the PID parameters ("Pb", "Int", "dEr",
etc.) are no longer visualized.

To stop the Auto-tuning cycle or deactivate the Self-tuning function
select one of the control types : "rEG", "OPLO" or "OFF" from the
menu “SEL”. If the instrument is switched off during Auto-tuning or
with the Self-tuning function activated, these functions will remain
activated the next time it is switched on.

4.9 - CONTROL POWER LIMITATION
Using this function, it is possible to limit the output control power
(separately for both control outputs) within a minimum limit and a
maximum limit .
It is only possible to use these limits if the PID control is single or
dual action and it may be useful to overcome some mechanical
problems of the actuators such as valves that do not open until the
output has reached at least 20% and/or are already completely
closed when the power has reached 80%.
The PID control of the instrument normally works producing power
between 0 and 100 % in the case of single-action PID and –100 (C)
and 100 (H) % in the case of dual-action PID.
The function is therefore deactivated by setting “ro1.L” =0 “ro2.L” =
0 and “ro1.H” =100, “ro2.H” = 100.
By setting different values the power is lowered to within the limits
set in order to use the actuator’s dynamics to the maximum.
The parameters that can be set for this function, contained in the

“

]

rEG” block are:
“ro1.L” - minimum power in output from 1rEG (H)
“ro1.H” - maximum power in output from 1rEG (H)
“ro2.L” - minimum power in output from 2rEG (C)
“ro2.H” - maximum power in output from 2rEG (C)

The limitation is not active under the “OPLO” manual control mode.

4.10 - LIMITATION OF THE CONTROL POWER VARIATION
SPEED

This function makes it possible to limit the variation speed of the
control power in output (separately for both control outputs).
It is only possible to use this function if the PID control is single or
dual action and can be useful for overcoming some problems with
the actuators that may need a slow progressive variation in power.
The parameters that can be set for this function, contained in the
block “

]

rEG”, are:

“OPS1” - variation speed of the output power from 1rEG (H)

expressed in [% / sec].
“OPS2” - variation speed of the output power from 2rEG (C)
expressed in [% / sec].
The limitation function is deactivated by setting the parameters =
InF and if “OPLO” is not active in manual control mode.

4.11 - SPLIT RANGE FUNCTION

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 9

The use of this function is only possible if the PID control is dual
function and can be used to delay or bring forward the intervention
of the actuators commanded by the instrument.
Using this function it is therefore possible to optimise the
intervention of the two actuators in such a way that their actions do
not overlap or so that they overlap so that they obtain the mix of the
two actions of the actuators.
Basically, this means setting two power offsets (one for direct action
and one for reverse action) that set the beginning of the intervention
of the actuator commanded by the output.
The parameters that can be set for this function contained in the
block “

]

rEG”, are:
“thr1” : Power threshold at which output 1rEG begins to operate.
“thr2” : Power threshold at which output 2rEG begins to operate.

Basically, if one wishes to bring forward the reverse action (1rEG)
and delay the direct action (2rEG) it is necessary to set positive
values on parameter “thr1” and negative values on parameter “thr2”.
In this way, the area within which the two outputs are not activated
at the same time is increased.

Vice versa if one wishes to extend the reverse action (1rEG) and
bring forward the direct action (2rEG) it is necessary to set negative
values on parameter “thr1” and positive values on parameter “thr2”.
In this way, the area within which the two outputs are activated at
the same time is increased.

The split range function is deactivated by setting the respective
parameters =0.

note : In order to simplify the explanation of the example graphs a
dual action control that is only proportional (and therefore with “dEr”
and “Int” = OFF) with “Prat” = 1.0 and “rS” = 0.0 was considered.

4.12 - REACHING OF THE SET POINT AT CONTROLLED SPEED
AND AUTOMATIC SWITCHING BETWEEN TWO SET POINTS
(RISE RAMP, FALL RAMP AND DWELL TIME)

All the parameters referring to the ramps functioning are contained
in the group “

]

rEG”.

It is possible to reach the set point in a predetermined time (in any
case longer than the time the plant would naturally need). This could
be useful in those processes (heating or chemical treatments, etc.)
where the set point has to be reached gradually, in a predetermined
time.
Once the instrument has reached the first Set Point (SP1) it is
possible to have automatic switching to the second Set Point (SP2)
after a set time, thus obtaining a simple automatic thermic cycle.
These functions are available for all the programmable controls (PID
single and double action, ON/OFF and Neutral Zone ON/OFF).
The function is determined by the following parameters :
"SLor" - Gradient of rise ramp (Process value < Set point)
expressed in unit/minute
"SLoF" - Gradient of fall ramp (Process value > Set point)
expressed in unit/minute.
"dur.t" – Dwell time of Set Point SP1 before automatic switching to
Set Point 2 SP2 (expressed in hrs. and min.).
The functions are deactivated when the relative parameters are =
InF.
When the Set Point value is changed or at switch on, the instrument
automatically determines which of the two values “SLor” or “SLoF” it
has to use.
Note: In case of PID control, if Auto-tuning is desired whilst the
ramp function is active, this will not be carried out until the tuning
cycle has been completed.
It is therefore recommended that Auto-tuning be started avoiding
activating the ramp function and, once the tuning is finished,
deactivate Auto-tuning (“Auto” = OFF), program the desired ramps
and, if it automatic tuning is desired, enable the Self-tuning function.

Examples with starts from values lower than SP and with decreasing
of SP.

4.13 - SOFT-START FUNCTION
All the parameters referring to the Soft -Start functioning are
contained in the group “

]

rEG”.

The Soft-Start function only works through PID control and allows
the limitation of control power when the instrument is switched on,
for a programmable period of time.
This is useful when the actuator, driven by the instrument, may be
damaged excess power supplied when the application is not yet in
the normal rating. (ex. for certain heating elements).
The function depends on the following parameters :

“St.P” – Soft-Start power
“Sst” – Soft-Start time (expressed in hh.mm)

The possible function modes are the following :

1) If both parameters are programmed with values other than OFF,
when switched on the instrument gives an output power as
programmed on par. “St.P” for the time programmed on par. “SSt”.
Practically, the instrument works in manual condition and switches
to automatic control at the elapsing of time “SSt”.

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 10

It is advisable not to program a power “St.P” that is too high as the
function is not deactivated when the automatic control power is
found to be lower than the programmed one.

2) If par. “St.P” = OFF and a value is set on par. “SSt” , at the switch
on, the power calculated by the PID controller is divided by the time
“SSt”, in order to calculate a ramp. The output power starts from 0
and is progressively increased, depending on the calculated ramp,
until the “SSt” time is reached or until the power overcomes the
power calculated by the PID controller.
To disable the Soft-Start function simply program par. “Sst” = OFF
Whenever, a measurement errors occurs during the Soft-Start
execution, the function is interrupted and the instrument gives an
output power as programmed on par. “OPE”.
If the measurement is restored, the Soft-Start is still deactivated.
If it’s desired to activate the Autotuning with Soft-Start set par.
“Auto”=4.
The Autotuning will start automatically at the end of programmed
Soft-Start cycle at the condition that the process value is lower (with
“Func” =HEAt) than [SP- |SP/2|] or higher (with “Func” =CooL) than
[SP+ |SP/2|].

4.14 – ALARM FUNCTION (AL1, AL2, AL3)

4.14.1 – ALARM OUTPUT CONFIGURATION

The alarms depend on the process value (AL1, AL2, AL3) and
before setting them to work, it is necessary to know which output the
alarm has to correspond to.
First of all it is necessary to configure in the groups of parameters

“

]

O ”, the parameters relative to the outputs required as alarm

(“O1F” , “O2F” ,“O3F” ,“O4F”), programming the parameter relating
to the desired output as follows :
= ALno if the alarm output has to be ON when the alarm is active,
while it is OFF when the alarm is not active
= ALnc if the alarm output has to be ON when the alarm is not
active, while it is OFF when the alarm is active
Note: In the following examples the alarm’s number is generally
indicated as n
Access the group “]ALn”, relating to the alarm to be set and
program which output the alarm signal must be sent to on par.
“OALn”.
The alarm functioning is instead defined by parameters :

"ALnt " – ALARM TYPE
"Abn" – ALARM CONFIGURATION
“ALn” – ALARM THRESHOLD
“ALnL” – LOW ALARM THRESHOLD (for band alarm) OR

MINIMUM SET OF ALn ALARM THRESHOLD (for low or high
alarm)
“ALnH” - HIGH ALARM THRESHOLD (for band alarm) OR
MAXIMUM SET OF ALn ALARM THRESHOLD (for low or high
alarm)

“HALn” - ALARM HYSTERESIS
“ALnd” – ALARM ACTIVATION DELAY (in sec.)
"ALni" – ALARM BEHAVIOUR IN THE EVENT OF

MEASUREMENT ERROR

"ALnt" – ALARM TYPE

: the alarm output can behave in six

different ways.
LoAb = ABSOLUTE LOW ALARM: The alarm is activated when the
process value goes below the alarm threshold set on parameter
"ALn”. With this mode is possible to program the minimum and the
maximum set of “ALn” by “ALnL” and “ALnH” parameters.

HiAb = ABSOLUTE HIGH ALARM: The alarm is activated when the
process value goes higher than the alarm threshold set on
parameter "ALn". With this mode is possible to program the
minimum and the maximum set of “ALn” by “ALnL” and “ALnH”
parameters.

LHAb = ABSOLUTE BAND ALARM: The alarm is activated when
the process value goes under the alarm threshold set on parameter
"ALnL" or goes higher than the alarm threshold set on parameter
"ALnH".

LodE = DEVIATION LOW ALARM: The alarm is activated when the
process value goes below the value [SP + ALn]. With this mode is
possible to program the minimum and the maximum set of “ALn”
by “ALnL” and “ALnH” parameters.

HidE = DEVIATION HIGH ALARM: The alarm is activated when the
process value goes above the value [SP + ALn]. With this mode is
possible to program the minimum and the maximum set of “ALn”
by “ALnL” and “ALnH” parameters.

LHdE = DEVIATION BAND ALARM: The alarm is activated when
the process value goes below the value [SP + ALnL] or goes above
than the value [SP + ALnH]

"Abn" - ALARM CONFIGURATION

: This parameter can assume a
value between 0 and 15.
The number to be set, which will correspond to the function desired,
is obtained by adding the values reported in the following
descriptions :
ALARM BEHAVIOUR AT SWITCH ON

: the alarm output may
behave in two different ways, depending on the value added to par.
“Abn”.
+0 = NORMAL BEHAVIOUR: The alarm is always activated when
there are alarm conditions.
+1 = ALARM NOT ACTIVATED AT SWITCH ON: If, when switched
on, the instrument is in alarm condition, the alarm is not activated. It
will be activated only when the process value is in non-alarm
conditions and then back in alarm conditions.

ALARM DELAY: the alarm output may behave in two different ways
depending on the value added to par. “Abn”.
+0 = ALARM NOT DELAYED: The alarm is immediately activated
when the alarm condition occurs.
+2 = ALARM DELAYED: When the alarm condition occurs, delay
counting begins, as programmed on par. “ALnd” (expressed in sec.)
and the alarm will be activated only after the elapsing of that time.

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 11

ALARM LATCH: : the alarm output may behave in two different
ways depending on the value added to par. “Abn”.
+ 0 = ALARM NOT LATCHED: The alarm remains active in alarm
conditions only.
+ 4 = ALARM LATCHED: The alarm is active in alarm conditions
and remains active even when these conditions no longer exist, until
the correctly programmed key “U”, (“USrb”=Aac) has been pushed.

ALARM AKNOWLEDGEMENT: : the alarm output may behave in
two different ways depending on the value added to par. “Abn”.
+ 0 = ALARM NOT AKNOWLEDGED: The alarm always remains
active in alarm conditions.
+ 8 = ALARM AKNOWLEDGED: The alarm is active in alarm
conditions and can be deactivated by key “U” if properly
programmed (“USrb”=ASi), and also if alarm conditions still exist.

"ALni" - ALARM ACTIVATION IN CASE OF MEASUREMENT
ERROR: This allows one to establish how the alarm have behave in

the event of a measurement error (yES=alarm active; no=alarm
deactivated).

4.14.2 - ALARMS HYSTERESIS
The alarm function depend s on alarm hysteresis (par. "HALn"),
which works in asymmetric way.
In the event of low alarm, the alarm will be activated when the
process value goes below the alarm threshold value and will be
deactivated when it goes above the alarm threshold + "HALn" ; in
case of high alarm, the alarm will be activated when the process
value goes above the alarm threshold value and will be deactivated
when it goes below the alarm threshold - "HALn".

For the band alarms, the example of the low alarm is applicable to
the low threshold ("ALnL") while the example of the high alarm is
applicable to the high threshold ("ALnH").

4.15 - HEATER BREAK ALARM FUNCTION (HB)

All the parameters referring to the Heater Break alarm function are
contained in the group “

]

Hb”.

The Heater Break alarm function (Breakage of the heating element)
is only available when the instrument is equipped with the input
(TAHB) to measure the current and if use a digital output to control
the load.
This input accepts signals coming from current transformers (TA)
with max. output 50 mA.
The first operation to be carried out in order to obtain a correct
current measurement, is to set the current that the instrument has to
measure at the end of scale of the input TA (50 mA) on par. “IFS”.
It is necessary to establish to which output the alarm has to
correspond.
To do this it is necessary to set the parameter relative to the output
to be used (“O1F” , “O2F” ,“O3F” ,“O4F”) in the groups “

]

O ”,

programming the parameter as :

= ALno if the alarm output has to be active when the alarm is active
while it is deactivated when the alarm is not active.
= ALnc if the alarm output has to be active when the alarm is not
active while it is deactivated when the alarm is active.
Enter group “

]

Hb” and program which output the alarm signal has to

address on parameter “OHb.
The functioning mode of the alarm is instead defined on par. “HbF”
which can be set in the following way :
= 1 : The alarm is active when, with output 1rEG active, the current
measured by the input TAHB is lower than the value programmed
on par. "IHbL" .
= 2 : The alarm is active when, with output 1rEG not active, the
current measured by the input TAHB is higher than the value
programmed on par. "IHbH" .
= 3 : The alarm is active when, with output 1rEG active, the current
measured by the input TAHB is lower than the value programmed
on par. "IHbL" or with output 1rEG not active, the current measured
by the input TAHB is higher than the value programmed on par.
"IHbH".
= 4 : The alarm is active when the current measured by the input
TAHB is lower than the value programmed on par. "IHbL" or the
measured current is higher than the value programmed on par.
"IHbH", independently by the state of the output 1rEG.
On par. “IHbL” the value of the current normally absorbed by the
load when output 1rEG is active has to be set, while on par. “IHbH”
the current normally absorbed by the load when output 1rEG is not
active.
The programming of these parameters has to be carried out while
also considering the fluctuations of the net voltage to avoid
undesired alarms.
With regards to the hysteresis of the HB alarm, this is automatically
calculated by the instrument as 1% of the programmed thresholds.
During functioning it is possible to visualize the current measured by
the input TAHB when output 1rEG is activated, by pushing the
“DOWN” key and the current measured when output 1rEG is
deactivated, by pushing the “DOWN” and “U” keys at the same time.
To exclude the Heater Break alarm it is enough to set “OHb” = OFF.
Note : The HB current measurement is valid if the output 1rEG is
activated (or deactivated) for 264 ms. at least.
This means that, if the cycle time (“tcr1”) is = 1 sec, the HB alarm is
able to intervene only when the output power is higher than 26,4%.

4.16 - LOOP BREAK ALARM FUNCTION
All the parameters referring to the Loop Break alarm function are
contained in the group “

]

LbA”.

The Loop Break alarm is available on all the instruments, which
intervenes when, for any reason (short-circuit of a thermocouple,
thermocouple inversion, load interruption), the loop control is
interrupted.
First of all, it is necessary to establish to which output the alarm has
to correspond.
To do this it is necessary to set the parameter relative to the output
to be used (“O1F” , “O2F” ,“O3F” ,“O4F”) in the groups “

]

O ”,

programming the parameter as :
= ALno if the alarm output has to be ON when the alarm is active
while it is OFF when the alarm is not active.
= ALnc if the alarm output has to be ON when the alarm is not
active while it is OFF when the alarm is active.
Enter group “

]

LbA” and program which output the alarm signal has

to be addressed to on par. “OLbA”.

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 12

The Loop Break alarm is activated if the output power remains at
the 100% of the value for the time programmed on par. "LbAt"
(expressed in sec.).
To avoid false alarms, the value of this parameter has to be set
considering the time the plant takes to reach the Set point when the
measured value is a long distance from it (for example at the plant
start-up).
On alarm intervention, the instrument visualizes the message
“LbA” and behaves as in the case of a measurement error giving a
power output as programmed on par. “OPE” (programmable in the
group “

]

InP”).

To restore normal functioning after the alarm, select the control
mode “OFF” and then re-program the automatic control (“rEG”) after
checking the correct functioning of probe and drive.
To exclude the Loop Break alarm, set “OLbA” = OFF.

4.17 - FUNCTIONING OF KEY “U”
The function of key “U” can be set through par. “USrb” contained in
the group ““

]

PAn”.

The parameter can be programmed as :

= noF : no function
= tunE : Pushing the key for 1 sec. at least, it is possible to

activate/deactivate Auto-tuning or Self-tuning
= OPLO : Pushing the key for 1 sec. at least, it is possible to swap
from automatic control (rEG) to manual one (OPLO) and vice versa.
= Aac : Pushing the key for 1 sec. at least, it is possible to
acknowledge the alarm. (see par. 4.14.1)
= ASi : Pushing the key for 1 sec. at least, it is possible to
acknowledge an active alarm (see par. 4.14.1)
= CHSP : Pushing the key for 1 sec. at least, it is possible to select
one of the 4 pre-programmed Set Points on rotation.
= OFF : Pushing the key for 1 sec. at least, it is possible to swap
from automatic control (rEG) to OFF control (OFF) and vice versa.

4.18 – DIGITAL INPUT

The instrument can also be equipped (in alternative to OUT4) with a
digital input whose function can be set by the parameter "diF"
contained in the group “

]

InP”.

The parameter can be programmed as:

= noF : the input does not carry out any function
= AaC : By closing the contact connected to the digital input, it is

possible to reset a memorised alarm (see par. 4.14.1)
= ASi: By closing the contact connected to the digital input, it is
possible to silence an active alarm (see par. 4.14.1)
= HoLd: By closing the contact connected to the digital input the
measurement taken at that moment is blocked (N.B.: not the
reading on the display, therefore the indication may stabilise itself
with a delay that is proportional to the measuring filter). With the
hold function turned on, the instrument carries out control according
to the memorised measurement. By opening the contact, the
instrument starts normal measurement acquisition once more.
= OFF : When the instrument is in “rEG” status, by closing the
contact connected to the digital input, the instrument is placed in
OFF status. By reopening the contact, the instrument returns to the
automatic control status “rEG”.
= CHSP : by closing and reopening the contact connected to the
digital input, it is possible to select one of the 4 memorised set
points in rotation.
= SP1.2 : By closing the contact connected to the digital input, the
set point SP2 is selected as being active while opening the contact
selects the set point SP1 as active. The function can only be
activated using “nSP” = 2 , also, when it is activated, it disables the
selection of the active set by the parameter “SPAt” and by the key
U.
= HE.Co : by closing the contact connected to the digital input it is
possible to select as active the set point SP2 in “CooL” mode.
Reopening the contact is select as active the set point SP1 in
“HEAt” mode. This function is possible only when “nSP” = 2.

4.19 - RS 485 SERIAL INTERFACE

The instrument can be equipped with a RS 485 serial
communication interface, by means of which it is possible to
connect the regulator with a net to which other instruments
(regulators of PLC) are connected, all depending typically on a
personal computer used as plant supervisor. Using a personal
computer it is possible to acquire all the function information and to
program all the instrument’s configuration parameters. The software
protocol adopted for TLK43 is a MODBUS RTU type, widely used in
several PLC and supervision programs available on the market (TLK
protocol manual is available on request).
The interface circuit allows the connection of up to 32 instruments
on the same line.
To maintain the line in rest conditions a 120 Ohm resistance (Rt)
must be connected to the end of the line.
The instrument is equipped with two terminals called A and B which
have to be connected with all the namesake terminals of the net.
For the wiring operation they must be interlaced with a double cable
(telephonic type) and all the GND terminals must be connected to
the ground. Nevertheless, particularly when the net results very long
or noised and being present potential differences between the GND
terminals, it is advisable to adopt a screened cable wired as in the
drawing.

If the instrument is equipped with a serial interface, the parameters
to be programmed are the following, all present in the parameters
group “

]

SEr” :

"Add" : Address of the station. Set a different number for each

station, from 1 to 255.
"baud" : Transmission speed (baud-rate), programmable from 1200
to 38400 baud. All the stations have to have the same transmission
speed.
"PACS" : Programming access. If programmed as "LoCL" this
means that the instrument is only programmable from the keyboard,
if programmed as "LorE" it is programmable both from the
keyboards and serial line.
If an attempt is made to enter the programming from the keyboard
whilst a communication through the serial port is in progress the
instrument will visualise "buSy" to indicate the busy state.

4.20 - PARAMETERS CONFIGURATION BY “KEY01”

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 3 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 both device and
instrument are being supplied.

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 13

P.A.: For the instruments equipped with RS485 serial

communication, it’s indispensable that the parameter “PACS” is
programmed = LorE.

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 TLK plugging the special
connector.

3) verify that the instrument and 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.

2) connect the device to an instrument TLK having the same
features of the one from which has been downloaded the desired
configuration, plugging the special connector.

3) verify that the instrument and 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
manual.

5 - PROGRAMMABLE PARAMETERS

Here following are described all the parameters available on the
instrument. Some of them could be not present or because they are
depending on the type of instrument or because they are
automatically disabled as unnecessary.

5.1 - PARAMETERS TABLE

Group “SP” (parameters relative to the Set Point)

Par. Description Range Def. Note

1

nSP

Number of
programmable Set
point

1 ÷ 4 1

2

SPAt

Active Set point 1 ÷ nSP 1

3

SP1

Set Point 1 SPLL ÷ SPHL 0

4

SP2

Set Point 2 SPLL ÷ SPHL 0

5

SP3

Set Point 3 SPLL ÷ SPHL 0

6

SP4

Set Point 4 SPLL ÷ SPHL 0

7

SPLL

Low Set Point -1999 ÷ SPHL -1999

8

SPHL

High Set Point SPLL ÷ 9999 9999

Group “InP” (parameters relative to the measure input)

Par. Description Range Def. Note

9

HCFG

Input type tc / rtd / I /

UoLt / SEr

tc

10

SEnS

Probe type tc :

J/ CrAL/ S/ b/

E/ L/ n/ r/ t/ C/

Ir.J / Ir.CA

rtd :

Pt1 / Ptc / ntc

I :

0.20 / 4.20
UoLt :

0.50 / 0.60 /

12.60 / 0.5 /

1.5 / 0.10 /

2.10

J

11

rEFL

Reflection coefficient
for IRS sensors

0.10 ÷ 1.00 1.00

12

SSC

Low scale limit in case
of input with V / I
signals

-1999 ÷ FSC 0

13

FSC

High scale limit in case
of input with V / I
signals

SSC ÷ 9999 0

14

dP

Number of decimal
figures

tc/rtd :

0 / 1

UoLt / I / SEr:

0 ÷ 3

0

15

Unit

Temperature unit of
measurement

tc/rtd :

°C / °F

°C

16

FiL

Input digital filter 0FF÷ 20.0

sec.

0.2

17

OFSt

Measuring Offset -1999 ÷ 9999 0

18

rot

Rotation of the
measuring straight line

0.000 ÷ 2.000 1.000

19

InE

“OPE” functioning in
case of measuring error

Our / Or / Ur OUr

20

OPE

Output power in case of
measuring error

-100 ÷ 100 % 0

21

dIF

Digital input function noF / AaC /

ASi / HoLd /
OFF / CHSP /
SP1.2 /HE.Co

noF

Group “O1” (parameters relative to output 1)

Par. Description Range Def. Note

22

O1F

Functioning of output 1
if digital type

1.rEG / 2.rEG

ALno / ALnc

OFF

1.rEG

23

Aor1

Beginning of output 1
scale if analogical type

0 / no_0 0

24

Ao1F

Functioning of output 1
if analogue type

1.rEG / 2.rEG

r.inP / r.Err
r.SP / r.SEr

OFF

1.rEG

25

Ao1L

Minimum reference for
analogical output 1 for
signal retransmission

-1999 ÷ Ao1H 0

26

Ao1H

Maximum reference for
analogical output 1 for
signal retransmission

Ao1L ÷ 9999 0

Group “O2” (parameters relative to output 2)

Par. Description Range Def. Note

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 14

27

O2F

Functioning of output 2
if digital type

1.rEG / 2.rEG
ALno / ALnc

OFF

OFF

28

Aor2

Beginning of output 2
scale if analogical type

0 / no_0 0

29

Ao2F

Functioning of output 2
if analogue type

1.rEG / 2.rEG

r.inP / r.Err

r.SP / r.SEr

OFF

OFF

30

Ao2L

Minimum reference for
analogical output 2 for
signal retransmission

-1999 ÷ Ao2H 0

31

Ao2H

Maximum reference for
analogical output 2 for
signal retransmission

Ao2L ÷ 9999 0

Group “O3” (parameters relative to output 3)

Par. Description Range Def. Note

32

O3F

Functioning of output 3 1.rEG / 2.rEG

ALno / ALnc

OFF

OFF

Group “O4” (parameters relative to output 4)

Par. Description Range Def. Note

33

O4F

Functioning of output 4 1.rEG / 2.rEG

ALno / ALnc

OFF

OFF

Group “AL1” (parameters relative to alarm AL1)

Par. Description Range Def. Note

34

OAL1

Output where alarm
AL1 is addressed

Out1 / Out2
Out3 / Out4

OFF

Out2

35

AL1t

Alarm AL1 type LoAb / HiAb

LHAb / LodE

HidE / LHdE

LoAb

36

Ab1

Alarm AL1 functioning 0 ÷ 15 0

37

AL1

Alarm AL1 threshold AL1L÷ AL1H 0

38

AL1L

Low threshold band
alarm AL1 or Minimum
set alarm AL1 for high
or low alarm

-1999 ÷ AL1H -1999

39

AL1H

High threshold band
alarm AL1 or Maximum
set alarm AL1 for high
or low alarm

AL1L ÷ 9999 9999

40

HAL1

Alarm AL1 hysteresis OFF ÷ 9999 1

41

AL1d

Activation delay of
alarm AL1

OFF ÷ 9999

sec.

OFF

42

AL1i

A

larm AL1 activation in

case of measuring error

no / yES no

Group “AL2” (parameters relative to alarm AL2)

Par. Description Range Def. Note

43

OAL2

Output where alarm
AL2 is addressed

Out1 / Out2
Out3 / Out4

OFF

OFF

44

AL2t

Alarm AL2 type LoAb / HiAb

LHAb / LodE

HidE / LHdE

LoAb

45

Ab2

Alarm AL2 functioning 0 ÷ 15 0

46

AL2

Alarm AL2 threshold AL2L÷ AL2H 0

47

AL2L

Low threshold band
alarm AL2 or Minimum
set alarm AL2 for high
or low alarm

-1999 ÷ AL2H -1999

48

AL2H

High threshold band
alarm AL2 or Maximum
set alarm AL2 for high
or low alarm

AL2L ÷ 9999 9999

49

HAL2

Alarm AL2 hysteresis OFF ÷ 9999 1

50

AL2d

Activation delay of
alarm AL2

OFF ÷ 9999

sec.

OFF

51

AL2i

A

larm AL2 activation in

case of measuring error

no / yES no

Group “AL3” (parameters relative to alarm AL3)

Par. Description Range Def. Note

52

OAL3

Output where alarm
AL3 is addressed

Out1 / Out2
Out3 / Out4

OFF

OFF

53

AL3t

Alarm AL3 type LoAb / HiAb

LHAb / LodE

HidE / LHdE

LoAb

54

Ab3

Alarm AL3 functioning 0 ÷ 15 0

55

AL3

Alarm AL3 threshold AL3L÷ AL3H 0

56

AL3L

Low threshold band
alarm AL3 or Minimum
set alarm AL3 for high
or low alarm

-1999 ÷ AL3H -1999

57

AL3H

High threshold band
alarm AL3 or Maximum
set alarm AL3 for high
or low alarm

AL3L ÷ 9999 9999

58

HAL3

Alarm AL3 hysteresis OFF ÷ 9999 1

59

AL3d

Activation delay of
alarm AL3

OFF ÷ 9999

sec.

OFF

60

AL3i

A

larm AL3 activation in

case of measuring error

no / yES no

Group “LbA” (parameters relative to Loop Break Alarm)

Par. Description Range Def. Note

61

OLbA

Output where alarm
LbA is addressed

Out1 / Out2
Out3 / Out4

OFF

OFF

62

LbAt

Time necessary to
activate alarm LbA

OFF ÷ 9999

sec.

OFF

Group “Hb” (parameters relative to Heater Break Alarm)

Par. Description Range Def. Note

63

OHb

Output where alarm HB
is addressed

Out1 / Out2
Out3 / Out4

OFF

OFF

64

IFS

High scale limit for input
TA HB

0.0 ÷ 100.0 100.0

65

HbF

Alarm HB function 1 / 2 / 3 / 4 1

66

IHbL

Low alarm HB threshold
(with Out 1rEG ON)

0.0 ÷ IFS 0.0

67

IHbH

High alarm HB
threshold (with Out
1rEG OFF)

IHbL ÷ IFS 100.0

Group “rEG” (parameters relative to control)

Par. Description Range Def. Note

68

Cont

Control type Pid / On.FA

On.FS / nr

3 Pt

Pid

69

Func

Functioning mode
output 1rEg

HEAt / CooL HEAt

70

HSEt

Hysteresis of ON/OFF
control

0 ÷ 9999 1

71

Auto

Autotuning Fast enable OFF /

1 / 2 / 3 / 4

1

72

SELF

Selftuning enable no / yES no

73

Pb

Proportional band 0 ÷ 9999 50

74

Int

Integral time OFF ÷ 9999

sec.

200

75

dEr

Derivative time OFF÷ 9999

sec.

50

76

FuOc

Fuzzy overshoot control 0.00 ÷ 2.00 0,5

77

tcr1

Cycle time of output
1rEg

0.1 ÷ 130.0
sec.

20,0

78

Prat

Power ratio 2rEg / 1rEg 0.01 ÷ 99.99 1.00

79

tcr2

Cycle time of 2rEg 0.1 ÷ 130.0

sec.

10.0

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 15

80

rS

Manual reset -100.0÷100.0 % 0.0

81

tcor

Time for motorised
actuator run

4 ÷ 1000 sec. 4

82

SHrI

Minimum value for
motorised actuator
control

0.0 ÷ 10.0 % 0.0

83

PoSI

Switch on position for
motorised actuator

no /

cLoS / oPEn

no

84

SLor

Gradient of rise ramp 0.00 ÷ 99.99

/ InF

unit/min.

InF

85

dur.t

Duration time 0.00 ÷ 99.59

/ InF

hrs.-min.

InF

86

SLoF

Gradient of fall ramp 0.00 ÷ 99.99

/ InF

unit / min.

InF

87

ro1.L

Minimum power in
output from 1rEG

0 ÷ ro1.H

%

0

88

ro1.H

Maximum power from
output from 1rEG

ro1.L ÷ 100 % 100

89

ro2.L

Minimum power in
output from 2rEG

0 ÷ ro2.H

%

0

90

ro2.H

Maximum power from
output from 2rEG

ro2.L ÷ 100 % 100

91

OPS1

Power variation speed
in output from 1rEG

1 ÷ 50 / InF

% / sec.

InF

92

OPS2

Power variation speed
in output from 2rEG

1 ÷ 50 / InF

% / sec.

InF

93

thr1

Split Range Power
threshold of output
1rEG

-100 ÷ 100 % 0

94

thr2

Split Range Power
threshold of output
2rEG

-100 ÷ 100 % 0

95

St.P

Soft-Start power OFF /

-100 ÷ 100 %

OFF

96

SSt

Soft-Start time OFF /

0.1÷7.59
/ InF

hrs.-min.

OFF

Group “PAn” (parameters relative to the user interface)

Par. Description Range Def. Note

97

USrb

Functioning of key “U” noF / tunE /

OPLO / Aac /

ASi / CHSP /

OFF

noF

98

diSP

Variable visualized on
the SV display

OFF / Pou /

SP.F / SP.o /

AL1 / AL2 /

AL3

SP.F

99

Edit

Fast programming of
active Set Point and
alarms

SE / AE /

SAE / SAnE

SAE

Group “SEr” (parameters relative to the serial communication)

Par. Description Range Def. Note

100

Add

Station address in case
of serial communication

0 … 255 1

101

baud

Transmission speed
(Baud rate)

1200 / 2400 /

9600 / 19.2 /

38.4

9600

102

PACS

Access at the
programming through
serial port

LoCL / LorE LorE

5.2 - PARAMETERS DESCRIPTION

GROUP “ ]SP” (PARAMETERS RELATIVE TO THE SET POINT):

These allow the setting of the control Sets and the Sets
function modes.
nSP – NUMBER OF PROGRAMMABLE SET POINTS: This allows

definition of the number of Set Points which will be programmed and
stored (from 1 to 4).
SPAt – ACTIVE SET POINT : If more than one Set Point is stored,
this allows selection of the active Set Point.

SP1 - SET POINT 1: Value of the Set Point n. 1
SP2 - SET POINT 2: Value of the Set Point n. 2 (it appears if “nSP”

>2 only)
SP3 - SET POINT 3: Value of the Set Point n. 3 (it appears if “nSP”
>3 only)
SP4 - SET POINT 4: Value of the Set Point n. 4 (it appears if “nSP”
=4 only)

SPLL – LOW SET POINT: Lower value programmable as Set Point
SPHL – HIGH SET POINT : Higher value programmable as Set

Point

GROUP “

]

InP” (PARAMETERS RELATIVE TO THE INPUTS):

These permit the definition of visualization modes of the
variable measured by the probe.
HCFG – INPUT TYPE : This permits selection of the input type :

thermocouples (tc), thermo-resistances or thermistors (rtd),
normalized signals in current (I), in voltage (UoLt) or a
measurement coming from the serial line (SEr).
SEnS – PROBE TYPE: Depending on what is programmed on par.
“HCFG” this permits the type of probe to be selected :

- for thermocouples (“HCFG”=tc): J (J), K (CrAL), S (S), B (b), C (C),
E (E), L (L), N (n), R (r), T (t), or for TECNOLOGIC infrared sensors
IRS series range A with linearization J (Ir.J) or K (Ir.CA)

- thermoresistances/thermistors (“HCFG”=rtd): Pt100 IEC (Pt1) or
thermistors PTC KTY81-121 (Ptc) or NTC 103AT-2 (ntc)

- normalized signals in current (“HCFG”=I): 0..20 mA (0.20) or 4..20
mA (4.20)

- normalized signals in voltage (“HCFG”=UoLt): 0..50 mV (0.50),

0..60 mV (0.60), 12..60 mV (12.60), 0..5 V (0.5), 1..5 V (1.5), 0..10 V
(0.10) or 2..10 V (2.10).
rEFL - REFLECTION COEFFICIENT FOR IRS SENSORS: this can
be used only when “SEnS” = Ir.J or Ir.CA and allows any measuring
errors caused by the environment’s lighting and the reflexivity of the
material to be corrected. Set this parameter to a high value when
the material to be measured is particularly light/reflective and reduce
it when the surface is especially dark/non-reflective , keeping in
mind however that for most materials, the recommended value is
between 1.00 and 0.80.
SSC – LOW SCALE LIMIT IN EVENT OF INPUT WITH V/I
SIGNALS : This is the value the instrument has to visualise when
the minimum value that can be measured on the scale (0/4 mA,
0/12 mV, 0/1 V or 0/2 V) is present at the output.
FSC – HIGH SCALE LIMIT IN EVENT OF INPUT WITH V/I
SIGNALS : This is the value the instrument has to visualise when
the maximum value that can be measured on the scale (20 mA, 50
mV, 60 mV, 5 V or 10 V) is present at the input.
dP – NUMBER OF DECIMAL FIGURES: This allows determination
of the measuring resolution as 1 (0), 0.1 (1), 0.01 (2), 0.001 (3). In
the case of temperature probes the allowed resolutions are 1° (0)
and 0.1° (1).
Unit – TEMPERTURE UNIT OF MEASUREMENT : When the
temperature is measured by temperature probes, this parameter
permits definition if the visualisation is expressed as degree
Centigrade (°C) or Fahrenheit (°F).
Filt – INPUT DIGITAL FILTER : This permits programming of the
constant of time of the software filter referring to the measured input
value (in sec.) in order to reduce noise sensitivity (increasing the
time of reading).
OFSt – MEASURING OFFSET: Positive or negative Offset which is
added to the value measured by the probe.
rot – ROTATION OF THE MEASURING STRAIGHT LINE: In this
way the offset programmed on par. “OFSt” is not constant for all
measurements. By programming “rot”=1.000, the value “OFSt” is
simply added to the value read by the probe before visualisation and

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 16

it remains constant for all the measurements. If instead one does
not want the programmed offset to be constant for all the
measurements, it is possible to carry out calibration on two desired
values.
In this case, to define the values to be programmed on par. “OFSt”
and “rot”, it is necessary to enforce the following formulae :

“rot” = (D2-D1) / (M2-M1) “OFSt” = D2 - (“rot” x M2)
where: M1 =measured value 1; D1 = visualisation value when the
instrument measures M1
M2 =measured value. 2; D2 = visualisation value when the
instrument measures M2
It then follows that the instrument will visualise : DV = MV x “rot” +

“OFSt”

where: DV = visualised value; MV= measured value
InE – “OPE” FUNCTIONING IN CASE OF MEASUREMENT
ERROR: This defines the error conditions of the input allowing the
instrument to give the power programmed on par. “OPE” as output.
The possibilities are :
= Or : the condition occurs in case of over-range or probe breakage
= Ur : the condition occurs in case of under-range or probe
breakage
= Our : the condition occurs in case of over-range or under-range or
probe breakage
OPE – OUTPUT POWER IN CASE OF MEASUREMENT ERROR:
This permits setting of the power that the instrument has to give as
output in case of measurement error. For the ON/OFF regulators
the power is calculated considering a cycle time equal to 20 sec.
dIF - DIGITAL INPUT FUNCTION: this allows the digital input
function to be defined as:
= noF : the input does not carry out any function
= Aac : By closing the contact connected to the digital input it is
possible to reset a memorised alarm
= ASi :By closing the contact connected to the digital input it is
possible to silence an active alarm
= HoLd : By closing the contact connected to the digital input the
measurement taken at that moment is blocked (N.B.: not the
reading on the display, therefore the indication may stabilise itself
with a delay that is proportional to the measuring filter). With the
hold function turned on, the instrument carries out control according
to the memorised measurement. By opening the contact, the
instrument starts normal measurement acquisition once more.
= OFF : When the instrument is in “rEG” status, by closing the
contact connected to the digital input, the instrument is placed in
OFF status. .
= CHSP : by closing and reopening the contact connected to the
digital input, it is possible to select one of the 4 memorised set
points in rotation.
= SP1.2 : By closing the contact connected to the digital input, the
set point SP2 is selected while opening the contact selects the set
point SP1 . The function can only be activated using “nSP” = 2 , .
= HE.Co : Closing the contact connected to the digital input it is
possible to select as active the set point SP2 in “CooL” mode.
Reopening the contact is select as active the set point SP1 in
“HEAt” mode. This function is possible only when “nSP” = 2.

GROUP “

]

O1” (PARAMETERS RELATIVE TO OUTPUT OUT1):
They permit to program the output OUT1 functioning.
O1F – FUNCTIONING OF OUTPUT OUT 1 DIGITAL TYPE: This

defines the functioning of output OUT 1 as: control output 1 (1.rEG),
control output 2 (2.rEG), alarm output as normally open (ALno),
output alarm normally closed (ALnc), output not used (OFF).
Aor1 - BEGINNING OF OUTPUT SCALE 1 ANALOGICAL TYPE:
This allows the beginning of the analogical output OUT1 to be set.
This parameter will therefore be set with: "0" if one intends to use
the beginning of the scale as being equal to 0 (0 mA, or 0 V) or
"no_0" if one intends to use the beginning of the scale as being
other than 0 (4 mA, or 2 V).
Ao1F - ANALOGICAL OUTPUT OUT1 FUNCTION: This determines
the function of the OUT 1 output as: control output 1 (1.rEG), control
output 2 (2.rEG), measurement retransmission output (r.inP), error
retransmission output [SP-PV] (r.Err), Active Set Point

retransmission output (r.SP), output guided by the instrument’s
serial communications line (rSEr), output not used (OFF).
Ao1L - MINIMUM REFERENCE FOR ANALOGICAL OUTPUT OUT
1 FOR SIGNAL RETRANSMISSION: in the event that the analogical
output function is configured for the retransmission of the signal, set
this parameter with the value to which the instrument must supply
the minimum value in output (0/4 mA or 0/2 V)
Ao1H - MAXIMUM REFERENCE FOR ANALOGICAL OUTPUT
OUT 1 FOR SIGNAL RETRANSMISSION: in the event that the
analogical output function is configured for the retransmission of the
signal, set this parameter with the value to which the instrument
must supply the maximum value in output (20 mA or 10 V).

GROUP “

]

O2” (PARAMETERS RELATIVE TO OUTPUT OUT2):
They permit to program the output OUT2 functioning.
O2F - FUNCTIONING OF OUTPUT OUT 2 DIGITAL TYPE: Equal to

“O1F” but referred to output OUT2.
Aor2 - BEGINNING OF ANALOGICAL OUTPUT SCALE OUT 2 :
Equal to “Aor1” but referred to output OUT2.
Ao2F - ANALOGICAL OUTPUT OUT2 FUNCTION: Equal to “Ao1F”
but referred to output OUT2.
Ao2L - MINIMUM REFERENCE FOR ANALOGICAL OUTPUT OUT
2 FOR SIGNAL RETRANSMISSION: Equal to “Ao1L” but referred to
output OUT2.
Ao2H - MAXIMUM REFERENCE FOR ANALOGICAL OUTPUT
OUT 2 FOR SIGNAL RETRANSMISSION: Equal to “Ao1H” but
referred to output OUT2.

GROUP “

]

O3” (PARAMETERS RELATIVE TO OUTPUT OUT3):
They permit to program the output OUT3 functioning.
O3F – FUNCTIONING OF OUTPUT OUT 3 DIGITAL TYPE: Equal

to “O1F” but referred to OUT3.

GROUP “

]

O4” (PARAMETERS RELATIVE TO OUTPUT OUT4):
They permit to program the output OUT4 functioning.
O4F – FUNCTIONING OF OUTPUT OUT 4 DIGITAL TYPE: Equal

to “O1F” but referred to OUT4.

GROUP “

]

AL1” (PARAMETERS RELATIVE TO ALARM AL1):

These permit setting of the process alarm AL1 function.
OAL1 – OUTPUT WHERE ALARM AL1 IS ADDRESSED: It defines

to which output the alarm AL1 has to be addressed.
AL1t – ALARM AL1 TYPE: permits the choice of behaviour for
alarm A1, by 6 different selections:
= LoAb – ABSOLUTE LOW ALARM : The alarm is activated when
the process value goes below the alarm threshold set on parameter
"AL1".
= HiAb - ABSOLUTE HIGH ALARM: The alarm is activated when
the process value goes above the alarm threshold set on parameter
"AL1".
= LHAb - ABSOLUTE BAND ALARM: The alarm is activated when
the process value goes below the alarm threshold set on parameter
"AL1L" or goes higher than alarm set on parameter "AL1H".
= LodE – DEVIATION LOW ALARM: The alarm is activated when
the process value goes below the value [SP + AL1]
= HidE – DEVIATION HIGH ALARM: The alarm is activated when
the process value goes above the value [SP + AL1]
= LHdE – DEVIATION BAND ALARM: The alarm is activated when
the process value goes below the value [SP + AL1L] or goes above
the value [SP + AL1H]
Ab1 – ALARM AL1 FUNCTION: This permits definition of alarm AL1
functions, by entering a number between 0 and 15. The number to
be programmed, that corresponds to the desired function, is
obtained adding the values reported in the following description :
ALARM BEHAVIOUR AT SWITCH ON

:
+0 = NORMAL BEHAVIOUR: The alarm is always activated when
there are alarm conditions.
+1 = ALARM NOT ACTIVATED AT SWITCH ON: If, at switch on,
the instrument is in alarm condition, the alarm is not activated. It will
be activated only when the process value goes beyond and then
returns to alarm conditions.
ALARM DELAY

:

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 17

+0 = ALARM NOT DELAYED: The alarm is immediately activated
when the alarm condition occurs.
+2 = ALARM DELAYED: When the alarm condition occurs, delay
counting starts as programmed on par. “ALnd” (expressed in sec.)
and the alarm will be activated only after this time has elapsed.
ALARM LATCH

: :
+ 0 = ALARM NOT LATCHED: The alarm remains active in alarm
conditions only.
+ 4 = ALARM LATCHED: The alarm is active in alarm conditions
and remains active even if these conditions no longer exist, until the
correctly programmed key “U” (“USrb”=Aac) has been pushed
ALARM AKNOWLEDGEMENT

: :
+ 0 = ALARM NOT AKNOWLEDGED: The alarm remains always
active in alarm conditions.
+ 8 = ALARM AKNOWLEDGED: The alarm is active in alarm
conditions and can be deactivated through key “U” if properly
programmed (“USrb”=ASi), also if alarm conditions still exist.
AL1 – ALARM AL1 THRESHOLD : Alarm AL1 threshold for low and
high alarms.
AL1L – LOW ALARM AL1 : Alarm AL1 low threshold when the
alarm is a band type or minimum set of AL1 alarm threshold when
the alarm is low or high type.
AL1H – HIGH ALARM AL1: Alarm AL1 high threshold when the
alarm is a band type or maximum set of AL1 alarm threshold when
the alarm is low or high type.
HAL1 - ALARM AL1 HYSTERESIS: Asymmetrical semi-band
relative to alarm AL1 threshold which defines the deactivation value
of alarm AL1.
AL1d – ACTIVATION DELAY OF ALARM AL1: This permits
definition of alarm delay activation AL1 when the delay function on
par. “Ab1” is activated.
AL1i – ALARM AL1 ACTIVATION IN CASE OF MEASUREMENT
ERROR: This permits a definition of measurement error conditions,
i.e whether the alarm has to be active ("yES") or not ("no").

GROUP “

]

AL2” (PARAMETERS RELATIVE TO ALARM AL2):

These permit the setting of the process alarm AL2 functions.
OAL2 - OUTPUT WHERE ALARM AL2 IS ADDRESSED: this

defines on which output the alarm AL2 has to be addressed.
AL2t - ALARM AL2 TYPE: Similar to “AL1t” but referring to alarm
AL2.
Ab2 - ALARM AL2 FUNCTIONING: Similar to “Ab1t” but referring to
alarm AL2.
AL2 - ALARM AL2 THRESHOLD : Similar to “AL1” but referring to
alarm AL2.
AL2L - LOW ALARM AL2 : Similar to “AL1L” but referring to alarm
AL2.
AL2H - HIGH ALARM AL2 : Similar to “AL1H” but referring to alarm
AL2.
HAL2 - ALARM AL2 HYSTERESIS: Similar to “HAL1” but referring
to alarm AL2.
AL2d - ACTIVATION DELAY OF ALARM AL2: Similar to “AL1d” but
referring to alarm AL2.
AL2i - ALARM AL2 ACTIVATION IN CASE OF MEASUREMENT
ERROR: Similar to “AL1i” but referring to alarm AL2.

GROUP “

]

AL3” (PARAMETERS RELATIVE TO ALARM AL3):

These permit the setting of the process alarm AL3.
OAL3 - OUTPUT WHERE ALARM AL3 IS ADDRESSED: It defines

on which output the alarm AL3 has to be addressed.
AL3t - ALARM AL3 TYPE: Similar to “AL1t” but referring to alarm
AL3.
Ab3 - ALARM AL3 FUNCTIONING: Similar to “Ab1t” but referring to
alarm AL3.
AL3- ALARM AL3 THRESHOLD : Similar to “AL1” but referring to
alarm AL3.
AL3L - LOW ALARM AL3 : Similar to “AL1L” but referring to alarm
AL3.
AL3H - HIGH ALARM AL3 : Similar to “AL1H” but referring to alarm
AL3.

HAL3 - ALARM AL3 HYSTERESIS: Similar to “HAL1” but referring
to alarm AL3.
AL3d - ACTIVATION DELAY OF ALARM AL3: Similar to “AL1d” but
referring to alarm AL3.
AL3i - ALARM AL3 ACTIVATION IN CASE OF MEASUREMENT
ERROR: Similar to “AL1i” but referring to alarm AL3.

GROUP “LbA” (PARAMETERS RELATIVE TO THE LOOP
BREAK ALARM): this contains the parameters relative to the
Loop Break alarm (control loop interruption), which intervenes
when, for any reason (short-circuit of a thermocouple, load
interruption, etc) the control loop is interrupted.
OLbA – OUTPUT WHERE THE LOOP BREAK ALARM IS

ADDRESSED: This defines to which output the LOOP BREAK alarm
has to be addressed.
LbAt – TIME NECESSARY TO ACTIVATE THE LOOP BREAK
ALARM : Delay time to the intervention of the Loop Break alarm.
The alarm intervenes when the output power remains at 100% for
the time programmed on this parameter (in sec.)

GROUP “

]

Hb” (PARAMETERS RELATIVE TO THE HEATER
BREAK ALARM): this contains the parameters relative to the
Heater Break alarm (heating element breakage).
This function is present only when the instrument is equipped
with the input (TAHB) to measure the current absorbed by the
load. This input accepts signals coming from current
transformers (TA) with max. output 50 mA.
OHb – OUTPUT WHERE HEATER BREAK ALARM IS

ADDRESSED: this defines to which output the HEATER BREAK
alarm has to be addressed.
IFS – HIGH SCALE LIMIT FOR INPUT TA HB: Value that the
instrument has to visualise when as input TA HB It is present a
value of 50 mA.
HbF – ALARM HB FUNCTION: It defines the functioning of the
Heater Break alarm as:
= 1 : The alarm is active when, with output 1rEG active, the current
measured by the input TAHB is lower than the value programmed
on par. "IHbL" .
= 2 : The alarm is active when, with output 1rEG not active, the
current measured by the input TAHB is higher than the value
programmed on par. "IHbH" .
= 3 : The alarm is active when, with output 1rEG active, the current
measured by the input TAHB is lower than the value programmed
on par. "IHbL" or with output 1rEG not active, the current measured
by the input TAHB is higher than the value programmed on par.
"IHbH".
= 4 : The alarm is active when the current measured by the input
TAHB is lower than the value programmed on par. "IHbL" or the
measured current is higher than the value programmed on par.
"IHbH", independently by the state of the output 1rEG.
IHbL – LOW ALARM HB THRESHOLD: Enter the value of the
current normally absorbed by the load driven by the output 1reG,
when this is active.
IHbH – HIGH ALARM HB THRESHOLD: Enter the value of the
current normally absorbed by the load driven by the output 1reG,
when this is not active.

GROUP “

]

rEG” (PARAMETERS RELATIVE TO THE CONTROL):

this contains the parameters relative to control functions.
Cont – CONTROL TYPE: This permits selection of one of the

possible control modes offered by the instrument : PID (Pid), PID for
for motorised actuators (3Pt), ON/OFF with asymmetrical hysteresis
(On.FA), ON/OFF with symmetrical hysteresis (On.FS), Neutral
Zone ON/OFF (nr).
Func – FUNCTIONING MODE OUTPUT 1rEG: this permits one to
decide whether the control output 1rEG has to carry out a reverse
action, as for example a Heating process ("HEAt") or a direct action,
as for example a Cooling process ("CooL").
HSEt – ON/OFF CONTROL HYSTERESIS: Semi-band relative to
the Set Point which defines the activation and deactivation values of
the control output/s in case of ON/OFF control (On.FA, On.FS, nr).

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 18

Auto – AUTO-TUNING FAST ENABLE : this parameter allows one

to decide how Auto-tuning has to be carried out. The possible
selections are :
= 1 – if auto-tuning is desired automatically, each time the
instrument is switched on, on the condition that the process value is
lower (with “Func” =HEAt) than [SP- |SP/2|] or higher (with “Func”
=CooL) than [SP+ |SP/2|].
= 2 – if auto-tuning is desired automatically, the next time the
instrument is switched on, on the condition that the process value is
lower (with “Func” =HEAt) than [SP- |SP/2|] or higher (with “Func”
=CooL) than [SP+ |SP/2|], and once the tuning is finished, the par.
“Auto” is automatically swapped to the OFF state
= 3 - if manual auto-tuning is desired, by selecting par. “tunE” in
the main menu or by correctly programming key “U” as “USrb” =
tunE. In this case the auto-tuning starts without any control on the
process value condition. It is recommended to use this option,
starting the auto-tuning when the process value is as far as possible
from the Set Point because, in order to feature the Auto-tuning
FAST with its best performances , it is preferable to respect this
condition.
= 4 - if it’s desired to activate the autotuning automatically at the
end of programmed Soft-Start cycle. The Autotuning will start at the
condition that the process value is lower (with “Func” =HEAt) than
[SP- |SP/2|] or higher (with “Func” =CooL) than [SP+ |SP/2|].
= OFF - Autotuning disabled.
When it’s occurring an Autotuning cycle, led AT blinks.
SELF – SELF-TUNING ENABLE: Parameter used to enable (yES)
or disable (no) the Self-tuning function. Once the function has been
enabled, the Self-tuning has to be started by selecting item “tunE”,
in the main menu, or through key U properly programmed (“USrb” =
tunE).When the Self-tuning function is active, led AT is permanently
lit, and all the PID parameters ("Pb", "Int", "dEr", ecc.) are no longer
visualised.
Pb – PROPORTIONAL BAND: Width of the band around the Set
Point within which the proportional control is performed.
Int – INTEGRAL TIME: Integral time to be programmed in the PID
algorithm, expressed in sec.
dEr – DERIVATIVE TIME: : Derivative time to be programmed in the
PID algorithm, expressed in sec.
FuOc - FUZZY OVERSHOOT CONTROL: Parameter that permits
the elimination of the variable over-shoots at the start up of the
process or at the changing of the Set Point. A low value of this
parameter reduces the overshoot while a high value increase it.
tcr1 – CYCLE TIME OF OUTPUT 1rEG : Cycle time of output 1rEG
with PID control mode, expressed in sec..
Prat – POWER RATIO 2rEG / 1rEG : Parameter where it is possible
to program the power ratio between the element controlled by output
2rEG (ex.Cooling) and the element controlled by output 1rEG (ex.
Heating) in case of PID double action control.
tcr2 - CYCLE TIME OF OUTPUT 2rEG : Cycle time of output 2rEG
with PID double action control mode, expressed in sec..
rS - MANUAL RESET: Power Offset added to the power increase of
the proportional term, in order to eliminate the error when it is not
present the integral value. This parameter is only visualised when
“Int” =0.

Specific parameters for PID control for motorised actuators
with opening and closing controls that remain at the point they
have reached if no command is given. If the actuator has no
stop contacts that interrupt the action at the end of its run, it is
necessary to equip the installation with these contacts.
tcor - TIME OF MOTORISED ACTUATOR RUN: the time,

expressed in seconds that it takes the actuator to pass from the
“completely open” position to the “completely closed” position must
be set on this parameter".
SHrI - MINIMUM VALUE OF MOTORISED ACTUATOR CONTROL:
this is the value that the control must have reached (in %) before it
has an effect on the output.
PoSi - POSITIONING OF THE MOTORISED ACTUATOR SWITCH
ON : this allows to decide whether, when the instrument is switched
on, the actuator must remain where it is ("no"), whether is must be
taken to the maximum opening position ("oPEn") or the maximum
closing position ("cLoS").

Parameters relative to the ramps, allowing the Set Point to be
reached in a predetermined time.
Furthermore, once the first Set (SP1) has been reached, it is
possible to have automatic switching to the second Set (SP2)
after a programmable time, thus obtaining a simple thermal
cycle (functions available for all the control types)
SLor – GRADIENT OF RISE RAMP: Gradient of rise ramp to be

carried out when the process value is lower than the active Set
Point, expressed in unit/minute.
Programming the parameter = InF the ramp is not active.
dur.t - DWELL TIME: Dwell time of the Set Point SP1 before the
automatic switching to SP2 (expressed in hrs. and min.)
Using this parameter, once the first Set (SP1) has been reached, it
is possible to have automatic switching to the second Set (SP2)
after a programmable time, thus obtaining a simple thermal cycle.
Programming the parameter = InF the function is not active.
SLoF - GRADIENT OF FALL RAMP: Gradient of fall ramp to be
carried out when the process value is higher than the active Set
Point, expressed in unit/minute.
Programming the parameter = InF the ramp is not active.

Parameters for the power limitation and output power variation
speed functions, functions that can only be activated using
single or dual action PID controls.
ro1.L - MINIMUM OUTPUT POWER 1rEG: on this parameter set

the value that one desires for the output 1rEG when the internal
control decides that the power must be 0 %.
ro1.H - MAXIMUM OUTPUT POWER 1rEG: on this parameter set
the value that one desires for the output 1rEG when the internal
control decides that the power must be100 %.
ro2.L - MINIMUM OUTPUT POWER 2rEG: on this parameter set
the value that one desires for the output 2rEG when the internal
control decides that the power must be 0 %.
ro2.H - MAXIMUM OUTPUT POWER 2rEG: on this parameter set
the value that one desires for the output 2rEG when the internal
control decides that the power must be100 %.
OPS1 - POWER VARIATION SPEED IN OUTPUT 1rEG: this sets
the power variation speed for the control power in output 1rEG
(expressed in % / sec).
OPS2 - POWER VARIATION SPEED IN OUTPUT 2rEG: this sets
the power variation speed for the control power in output 2rEG
(expressed in % / sec).

Parameters for the function of the SPLIT RANGE that can only
be activated using the dual action PID control and can be used
to delay or bring forward the intervention of the two actuators
commanded by the instrument. Using this function, it is
possible to optimise the intervention of the two actuators in
such a way that their actions do not overlay or so that that they
overlap so that the mix of the actuators’ two action is obtained .
thr1 - POWER THRESHOLD AT WHICH THE OUTPUT 1rEG

BEGINS TO OPERATE: set this parameter with the power value at
which the output 1rEG begins to operate, keeping in mind the fact
that the positive values bring forward the action while negative
values delay it.
thr2 - POWER THRESHOLD AT WHICH THE OUTPUT 2rEG
BEGINS TO OPERATE: set this parameter with the power value at
which the output 2rEG begins to operate, keeping in mind the fact
that negative values bring forward the action and the positive values
delay it

Parameters relative to the Soft-Start function, which allows
limitation of control power, when the instrument is switched
on, for a predetermined time. This function is only available for
PID control.
St.P - SOFT START POWER: If parameter “SSt” is programmed

with a value other than OFF, this is the power given as output at the
instrument switch on, for the time “SSt”.
Practically speaking, the instrument works in manual condition and
switches to automatic control at the elapsing of time “SSt”.
If instead par. “St.P” = OFF and a value is set on par. “SSt” at
switch on, the power calculated by the PID controller is divided by
the time “SSt”, in order to calculate a ramp. The output power starts
from 0 and is progressively increased, according to the calculated

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 19

ramp, until the time “SSt” is reached or until the power overcomes
the power calculated by the PID controller.
SSt - SOFT START TIME (for PID control only): Duration time in
hours and min. of the Soft-Start described on pa. “St.P”.
To disable the Soft-Start function set par. “SSt” = OFF.

GROUP “

]

PAn” (PARAMETERS RELATIVE TO THE USER

INTERFACE) : This contains the parameters relative to the key
U and display functions.
Usrb - KEY U FUNCTION : Decides which function is associated to

key U. The possible selections are :
= noF : no function
= tunE : Pushing the key for 1 sec. at least, it is possible to
activate/deactivate the Auto-tuning or the Self-tuning
= OPLO : Pushing the key for 1 sec. at least, it is possible to swap
from the automatic control (rEG) to the manual one (OPLO) and vice
versa.
= Aac : Pushing the key for 1 sec. at least, it is possible to
acknowledge the alarm.
= ASi : Pushing the key for 1 sec. at least, it is possible to
acknowledge an active alarm
= CHSP : Pushing the key for 1 sec. at least, it is possible to select
one of the 4 pre-programmed Set Points on rotation.
= OFF : Pushing the key for 1 sec. at least, it is possible to swap
from the automatic control (rEG) to the OFF control (OFF) and vice
versa.
diSP - VARIABLE VISUALISED ON THE DISPLAY SV: Parameter
trough which it’s possible to decide what is visualised on the display
SV : the active Set Point (= SP.F), the Set Point active when there
are ramps (= SP.o), the control power (= Pou), the alarm thresholds
AL1, 2 or 3 (= AL1, AL2 or AL3) or it can be switched off (OFF).
Edit - FAST PROGRAMMING OF ACTIVE SET POINT AND
ALARMS: This decides which are the Sets that can be programmed
by the fast procedure. The parameter can be programmed as :
=SE: The active Set Point can be modified while the alarm
thresholds cannot be modified
=AE :The active Set Point cannot be modified while the alarm
thresholds can be modified
=SAE: If the active Set Point or the alarm thresholds can be
modified
=SAnE: If the active Set Point or the alarm thresholds cannot be
modified

GROUP “

]

SEr” (PARAMETERS RELATIVE TO THE SERIAL

COMMUNICATION): If the instrument is equipped with RS485
serial communication these parameters allow device
configuration for communication.
Add – STATION ADDRESS IN CASE OF SERIAL

COMMUNICATION : This is used to set the instrument address in
the communication net. Programme a different number for each
station, from 1 to 255.
baud – TRANSMISSION SPEED (BAUD RATE): Set the data
transmission speed of the network to which the instrument is
connected. The possible selections are 1200, 2400, 9600, 19.2
(19200), 38.4 (38400).
All stations must have the same transmission speed.
PACS ACCESS TO PROGRAMMING THROUGH SERIAL PORT :
Programming access. If programmed as "LoCL" this means that the
instrument can only be programmed from the keyboard, if
programmed as "LorE" it can be programmed from both the
keyboards and serial line.

6 - PROBLEMS, MAINTENANCE AND GUARANTEE

6.1 - ERROR SIGNALLING

In error conditions, the instrument provides an output power as
programmed on par “OPE” and activates the desired alarms, if the
relative parameters “ALni” have been programmed = yES.

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.

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.

7 - TECHNICAL DATA

7.1 – ELECTRICAL DATA

Power supply:

24 VAC/VDC, 100... 240 VAC +/- 10%

Frequency AC:

50/60 Hz

Power consumption:

10 VA approx.

Input/s:

1 input for temperature probes: tc J,K,S ; RTD Pt 100 IEC;
PTC KTY 81-121 (990 Ω @ 25 °C); NTC 103AT-2 (10KΩ @ 25 °C)
or mV signals 0...50 mV, 0...60 mV, 12 ...60 mV or normalized
signals 0/4...20 mA, 0/1...5 V , 0/2...10 V.
1 input for current transformer (50 mA max.)

Error Reason Action

- - - -

Probe interrupted

uuuu

The measured variable
is under the probe’s
limits (under-range)

oooo

The measured variable
is over the probe’s
limits (over-range)

Verify the correct
connection between
probe and
instrument and then
verify the correct
functioning of the
probe

ErAt

Auto-tuning not possible
because the process
value is higher (with
“Func” =HEAt) than [SP­|SP/2|] or lower (with
“Func” =CooL) than
[SP+ |SP/2|]

Swap the instrument
to OFF control (OFF)
and then to
automatic control
(rEG) in order to
make the error
message disappear.
Once the error has
been found, try to
repeat the auto­tuning.

noAt

Auto-tuning not finished
within 12 hours

Check the
functioning of probe
and actuator and try
to repeat the auto­tuning.

LbA

Loop control interrupted
(Loop break alarm)

Check the working of
probe and actuator
and swap the
instrument to (rEG)
control

ErEP

Possible anomaly of the
EEPROM memory

Push key “P”

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 20

1 digital input for free voltage contact
Impedance normalized signals input:

0/4..20 mA: 51 Ω;
mV and V: 1 MΩ
Output/s:

Up to 4 digital outputs. Relay SPST-NO (OUT1:5 A-AC1, 2
A-AC3 / 250 VAC; OUT2-3-4:3 A-AC1, 1 A-AC3 / 250 VAC) ; or in
tension to drive SSR (7mA/ 14VDC).
Up to 2 analogue outputs: 0/4 ..20 mA o 0/2 ..10 V.
The output OUT1 for SSR can be 20mA/14VDC if the 12 VDC
auxiliary supply output is not used.
Auxiliary supply output:

12 VDC / 20 mA Max.

Electrical life for relay outputs:

100000 operat.

Installation category:

II

Measurement category:

I

Protection class against electric shock:

Class II for Front panel

Insulation:

Reinforced insulation between the low voltage section
(supply and relay outputs) and the front panel; Reinforced insulation
between the low voltage section (supply and relay outputs) and the
extra low voltage section (inputs, analogue outputs, SSR outputs);
analogue and SSR outputs optoisolated respect to the input. 50 V
insulation between RS485 and extra low voltage section.

7.2 – MECHANICAL DATA
Housing:

Self-extinguishing plastic, UL 94 V0

Dimensions:

48 x 48 mm DIN, depth 98 mm

Weight:

190 g approx.

Mounting:

Flush in panel in 45 x 45 mm hole

Connections:

2 x 1 mm2 screw terminals block

Degree of front panel protection :

IP 54 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

7.3 – MECHANICAL DIMENSIONS, PANEL CUT-OUT AND
MOUNTING [mm]

7.4 – FUNCTIONAL FEATURES

Control: ON/OFF, single and double action PID, PID for motorized
actuators with time positioning
Measurement range:

according to the used probe (see range table)

Display resolution:

according to the probe used 1/0,1/0,01/0,001

Overall accuracy:

+/- 0,15 % fs

Max. cold junction compensation drift (in tc) :

0,04 °C/°C with
operating temperature 0 ... 50 °C after warm-up of 20 min.
Sampling rate:

130 ms.

Serial Interface :

RS485 insulated

Communication protocol:

MODBUS RTU (JBUS)

Baud rate:

Programmable from 1200 ... 38400 baud

Display: Display:

4 digit, 1 Red (PV) and 1 green (SV), h 7 mm

Compliance:

ECC directive EMC 89/336 (EN 61326), ECC directive

LV 73/23 and 93/68 (EN 61010-1)

7.5

– MEASURING RANGE TABLE

INPUT “dP” = 0 “dP”= 1, 2, 3

tc J

“HCFG” = tc

“SEnS” = J

-160 ... 1000 °C

- 256 ... 1832 °F

-160.0 ... 999.9 °C

-199.9 ... 999.9 °F

tc K

“HCFG” = tc

“SEnS” = CrAl

-270 ... 1370 °C

- 454 ... 2498 °F

-199.9 ... 999.9 °C

-199.9 ... 999.9 °F

tc S

“HCFG” = tc

“SEnS” = S

-50 ... 1760 °C

-58 ... 3200 °F

-50.0 ... 999.9 °C

-58.0 ... 999.9 °F

tc B

“HCFG” = tc

“SEnS” = b

72 ... 1820 °C

162 ... 3308 °F

72.0 ... 999.9 °C

162.0 ... 999.9 °F

tc E

“HCFG” = tc

“SEnS” = E

-150 ... 750 °C

-252 ... 1382 °F

-150.0 ... 999.9 °C

-199.9 ... 999.9 °F

tc L

“HCFG” = tc

“SEnS” = L

-150 ... 900 °C

-252 ... 1652 °F

-150.0 ... 900.0 °C

-199.9 ... 999.9 °F

tc N

“HCFG” = tc

“SEnS” = n

-270 ... 1300 °C

-454 ... 2372 °F

-199.9 ... 999.9 °C

-199.9 ... 999.9 °F

tc R

“HCFG” = tc

“SEnS” = r

-50 ... 1760 °C

-58 ... 3200 °F

-50.0 ... 999.9 °C

-58.0 ... 999.9 °F

tc T

“HCFG” = tc

“SEnS” = t

-270 ... 400 °C

-454 ... 752 °F

-199.9 ... 400.0 °C

-199.9 ... 752.0 °F

tc C

“HCFG” = tc

“SEnS” = C

0 ... 2320 °C

32 ... 4208 °F

0.0 ... 999.9 °C

32.0 ... 999.9 °F

TECNOLOGIC IRS

range “A”

“HCFG” = tc

“SEnS”= Ir.J - Ir.CA

-46 ... 785 °C

-50 ... 1445 °F

-46.0 ... 785.0 °C

-50.8 ... 999.9 °F

Pt100 (IEC)

“HCFG” = rtd

“SEnS” = Pt1

-200 ... 850 °C

-328 ... 1562 °F

-199.9 ... 850.0 °C

-199.9 ... 999.9 °F

TECNOLOGIC spa - TLK 43 - OPERATING INSTRUCTIONS - Vr.02 - ISTR 06267 - PAG. 21

PTC (KTY81-121)

“HCFG” = rtd
“SEnS” = Ptc

-55 ... 150 °C

-67 ... 302 °F

-55.0 ... 150.0 °C

-67.0 ...302.0 °F

NTC (103-AT2)

“HCFG” = rtd
“SEnS” = ntc

-50 ... 110 °C

-58 ... 230 °F

-50.0 ... 110.0 °C

-58.0 ... 230.0 °F

0..20 mA

“HCFG” = I

“SEnS” = 0.20

-1999 ... 9999

-199.9 ... 999.9

-19.99 ... 99.99

-1.999 ... 9.999

4..20 mA

“HCFG” = I

“SEnS” = 4.20

-1999 ... 9999

-199.9 ... 999.9

-19.99 ... 99.99

-1.999 ... 9.999

0 ... 50 mV

“HCFG” = UoLt

“SEnS” = 0.50

-1999 ... 9999

-199.9 ... 999.9

-19.99 ... 99.99

-1.999 ... 9.999

0 ... 60 mV

“HCFG” = UoLt

“SEnS” = 0.60

-1999 ... 9999

-199.9 ... 999.9

-19.99 ... 99.99

-1.999 ... 9.999

12 ... 60 mV
“HCFG” = UoLt
“SEnS” = 12.60

-1999 ... 9999

-199.9 ... 999.9

-19.99 ... 99.99

-1.999 ... 9.999

0 ... 5 V

“HCFG” = UoLt

“SEnS” = 0.5

-1999 ... 9999

-199.9 ... 999.9

-19.99 ... 99.99

-1.999 ... 9.999

1 ... 5 V

“HCFG” = UoLt

“SEnS” = 1.5

-1999 ... 9999

-199.9 ... 999.9

-19.99 ... 99.99

-1.999 ... 9.999

0 ... 10 V

“HCFG” = UoLt

“SEnS” = 0.10

-1999 ... 9999

-199.9 ... 999.9

-19.99 ... 99.99

-1.999 ... 9.999

2 ... 10 V

“HCFG” = UoLt

“SEnS” = 2.10

-1999 ... 9999

-199.9 ... 999.9

-19.99 ... 99.99

-1.999 ... 9.999

7.6 – INSTRUMENT ORDERING CODE

TLK 43 a b c d e f g h ii

a : POWER SUPPLY
L = 24 VAC/VDC
H = 100 ... 240 VAC

b : OUTPUT OUT1
R = Relay
O = Voltage VDC for SSR
C = Analogue 0/4 ..20 mA
V = Analogue 0/2 .. 10 V

c : OUTPUT OUT2
R = Relay
O = Voltage VDC for SSR
C = Analogue 0/4 ..20 mA
V = Analogue 0/2 .. 10 V

- = None

d : OUTPUT OUT3
R = Relay
O = Voltage VDC for SSR

- = None

e : OUTPUT OUT4
R = Relay
O = Voltage VDC for SSR

- = None

f : COMMUNICATION INTERFACE
S = RS 485 Serial interface
I = RS 485 Serial Interface + digital input

- = No interface

g : CURRENT TRANSFORMER INPUT

- = Not present
H = Present

h : OPTIONAL PROBES

- = None

ii : SPECIAL CODES

Note :

- The output OUT4 must be the same type as OUT3.

- The digital input can only be present as an alternative to the output
OUT4.

TLK 43 PASSWORD = 381