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 96 mm, is designed for flush-in
panel mounting.
Make a hole 45 x 92 mm and insert the instrument, fixing it with the
provided special brackets.
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 an overload protection and 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 the supply of all the electrical circuits
connected to the instrument must be protect properly, using
devices (ex. fuses) proportionate to the circulating currents.
It is strongly recommended that cables with proper insulation,
according to the working voltages and temperatures, be used.
Furthermore, the input cable of the probe has to be kept separate
from line voltage wiring. If the input cable of the probe is screened,
it has to be connected to the ground with only one side.
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.
3.4 - ELECTRICAL WIRING DIAGRAM
Out2,3,4,5: 4A-AC1(2A-AC3)/ 250 VAC
Out1: 6A-AC1(3A-AC3)/ 250 VAC
Pt100
A
B
GND
Out6
+12 VDC
0/1..5 V
0/2..10 V
+
0/4..20
(active)
(passive)
4..20
mA
mA
+
+
NTC
INPUT
PTC
TA HB
RS485
NO
G
4b
ANALOG.: 0/4..20mA - 0/2..10V
1b
TC
+
2b
3b
RELAYS:
OUTPUTS
SSR: 12 VDC/20 mA
6b
5b
1a
2a
4a
3a
+
+
NO
+
+
G
NC
C
+
C
NO
DIG. IN 2
DIG. IN 1
5a
6a
+
+
Out1
10b
SUPPLY
7b
9b
8b
Out2
12b
11b
7a
Out4
Out3
9a
8a
10a
Out5
12a
11a
TLK 94
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
KTY81-121 (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”.
TECNOLOGIC spa - TLK 94
-OPERATING INSTRUCTIONS - Vr.01 - 01/10 - ISTR-MTLK94ENG1 - PAG. 4
