instrument provides for the storage of 4 Set Points and can have
up to 6 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 have 2
programmable digital inputs for free voltage contacts and can be
equipped with an input for the current transformer, working as a
Heater Break Alarm function. 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
TLK 94
Out2
PV
SV
SET
TUN
Out1
Out3 Out4 Out5
7
3
2
8
12
9
6
4
1
13
14
5
11
Out6
10
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 (see par.
4.17) and modify the visibility of the parameters in “ConF” menu
(see par. 2.3).
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 OUT5
: indicates the state of output OUT5
10 - Led OUT6
: indicates the state of output OUT6
11 - Led SET
: it indicates access to the programming mode and
the parameters level (see par. 2.3).
12 - Led TUN
: indicates that the Self-tuning function is activated
(light on) or that Auto-tuning (flashing ) is in progress.
13 - Display PV:
normally indicates the process value
14 - 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)
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) and
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
AL1, AL2, AL3, AL4
(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.
S E L FT U N IN G
A U TO T U N IN G
2 sec.
H old fo r
"O FF "
"rE G "
"O P L O "
Using the "UP" or DOWN” keys, it is then possible to roll over the
selections:
to swap the regulator to the manual control state and
therefore to program the % control value using the
“UP” and “DOWN” keys
"OPLO"
to activate the Auto-tuning or Self-tuning function
"tunE"
to swap the regulator into the automatic control state
"rEG"
to swap the regulator into the OFF state
"OFF"
to enter into the configuration parameters menu
"ConF"
to enter into the operating parameters menu
"OPEr"
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).
TECNOLOGIC spa - TLK 94
-OPERATING INSTRUCTIONS - Vr.01 - 01/10 - ISTR-MTLK94ENG1 - PAG. 2
