Novatek-electro TR-101 User manual

NOVATEK-ELECTRO LTD
Research-and-Manufacture Company
DIGITAL TEMPERATURE RELAY
TR-101
USERS MANUAL
www.novatek-electro.com

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TR-101 NOVATEK-ELECTRO
This manual is provided in order to introduce the operating personnel to structure, operating principle,
design, mode of operation and maintenance of TR-101 digital temperature relay (further referred to as
“device”, "TR-101” or “ TR-101 unit”).
1 APPLICATION
TR-101 is designed for measuring and controlling a device temperature by means of four sensors
connected according to a two- or four-wire diagram, with subsequent temperature display. The device can
find various applications in industrial sector, in municipal utilities service, and agriculture.
The device allows for performing the following functions:
•taking temperature measurement on 4 channels with use of standard sensors;
•controlling temperature according to proportional-integral-differential (PID) principle;
•temperature on-off regulation;
•displaying currently measured temperature value on the integral LED digital display;
•transferring the measured values for the sensors monitored via Modbus RTU standard protocol;
•defining a break or a short circuit on the connected sensors lines;
•measured temperature digital filtering and correction;
•programming by the front panel keys and via PC;
•settings backup when de-energized;
•settings protection from unauthorized change;
TR-101 has a flexible power supply and can use any voltage form 24 to 260 V, regardless of polarity.
TR-100 can use the following types of temperature sensors:
Table 1
Sensor
type
Rated resis-
tance at 0 °C,
R0, Оhm
Unique sensor curve (USC) notation Temperature range
national
international
Platinum
W100 =1,3850
W100 =1,3910
50
50П
Pt50
Pt’50
-50…+200
100
100П
Pt100
Pt’100
-50…+200
500
500П
Pt500
Pt’500
-50…+200
1000
1000П
Pt1000
Pt’1000
-50…+200
Copper
W100 =1,4260
W100 =1,4280
50
50М
Cu50
Cu’50
-50…+200
100
100М
Cu100
Cu’100
-50…+200
Nickel
W100 = 1,6170
100
100Н
Ni100
-50…+180
120
120Н
Ni120
-50…+180
500
500Н
Ni500
-50…+180
1000
1000Н
Ni1000
-50…+180
Other
W100 = 2,0805
W100 = 2,0805
990 by 25°C
807 by 0°C
PTC1000
EKS111
-50…+100
W100 – ratio rate of sensor resistance at 100°С to its resistance at 0°С (W100 = R100 / R0)
2 TECHNICAL BRIEF AND OPERATING CONDITIONS
2.1 The basic technical parameters are shown below in table 2.
Table 2
Supply voltage, V
24 – 260 AC/DC
Recommended fuse, A
1
Type of temperature measurement sensors
Pt50, Pt100, Pt500, Pt1000,
Cu50, Cu100, Ni100, Ni120,
Ni500, Ni1000, PTC1000
Quantity of sensors connectable, pcs
1 – 4

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NOVATEK-ELECTRO TR-101
Sensors wiring schematic
2 / 3 wires
Sensor wire length, depending on the wiring schematic, m 2- wire, up to 5
3- wire, up to 100
Quantity of output relays, pcs
4
Data memory, years, no less than
10
Temperature measurement error, °C
±2
Measured temperature range, °C
from -50 to +200
Output relay testing
available
RS-485 MODBUS RTU
available
PID regulation with keyword (relay)
available
Two-position regulator
available
Channel measurement time, sec, no more than
0,6
Protection degree: - enclosure
- terminal block
ІР30
ІР20
Climatic resistance version
У3.1 (moderate)
Power consumption (under load), no more than, VA
4,0
Weight, not more, kg
0,370
Dimensions, mm
90 х 139 х 63
Output contacts commutation lifetime:
- electrical life 10А, 250V AC, times, no less than
- electrical life 10А, 24V DC, times, no less than
100 thousand
100 thousand
Mounting onto standard 35 mm DIN-rail
Mounting position any
Output contacts specification
Cos
ϕ
Max. current at
~ 250 V AC
Maximum power Max. voltage ~
Max. current for
U = 30V D.C.
1,0
10 А
4000 VА
440 V
3 А
2.2 The device is designed for operating in the following environment:
- ambient temperature: from - 35 to +55 °C;
- storage temperature: from - 45 to +70 °C;
- atmospheric pressure from 84 to 106,7 kPa;
- relative air humidity (at temperature 35 °С) 30…80%.
3 EQUIPMENT DESIGN AND OPERATION
3.1 TR-101 DEVICE EQUIPMENT
Trace of symbols at numeric display to letters of Roman alphabet is shown at picture № 3.
Figure 3 - Trace of symbols at numeric display to letters of Roman alphabet
3.1.1 Design
The device is manufactured in plastic casing (9 S-type modules) to be mounted onto standard DIN rail.
The casing outline with overall and mounting dimensions is presented in Figure 3.1.

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TR-101 NOVATEK-ELECTRO
Figure 3.1 – TR-101 dimensions
3.1.2 Displaying and control
Figure 3.2. presents the TR-101 front panel exterior.
1 1 0
12
3
4
5
6
7
8
9
10
1 – currently displayed channel number indicator;
2 – seven-digit numerical display;
3 – up key;
4 – down key;
5 – enter key, used in the device programming mode;
6 – view mode and device programming mode enter key;
7 – RS-485 connection and communication activity indicator;
8 – parameter programming mode indicator;
9 – sensors failure indicator;
10 – relay close (open) indicator;
Figure 3.2 – TR –101 Front Panel
In the menu mode, (1,7) indicators display the corresponding parameter (on/off), ( , , ,
, Table 7.1).
Device control:
•use keys to toggle channels;
•use key to enter the parameter view mode;
•to enter the parameter edit mode -press key and hold it within 7 seconds, the “setting”
indicator (fig. 3.2, 8) shall light.
•to save modified value – use key;
•if no key has been pressed within 20 sec, TR-101 will display sign(within 1 sec), and will switch
to the initial state.
3.2 OPERATING PRINCIPLE AND INPUT SIGNAL PROCESSING
3.2.1 Operating principle
In course of its operation, TR-101 performs input sensors scanning, then, based on the data obtained,

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NOVATEK-ELECTRO TR-101
calculates the current temperature value and outputs it on the digital display and sends Control signals to
the corresponding channel relay.
3.2.2 Input signal processing
The signal that is received from sensor is transformed into a temperature digital value.
In order to eliminate the initial input signal processing error, as well as errors that are produced by the
connection wiring; the device measured value can be adjusted. TR-101 provides for two adjustment types,
which allow performing a gain shift or sloping by a specified degree for each channel independently.
3.2.3 Measurements adjustment
3.2.3.1 To provide for the error compensation ΔR = (R0 - R0.TC) produced by the input wiring resistance
RTC, each measured temperature value (Tизм) is added with a user specified value δ. Figure 3.3 shows
an example of a characteristics shift for Pt100 sensor.
Programmable parameters: , , , .
3.2.3.2 To provide for sensor error compensation upon W100 value deviation from the rated value each
Tизм parameter measured value is multiplied by the user set adjustment parameter α.
The ratio boundaries are set within 0,50 to 2,00 limits.
Figure 3.4 shows an example of the characteristic slant variation for Pt100 sensor.
Programmable parameters: , , , .
Figure 3.3 Figure 3.4
3.2.4 Digital filter
To provide for the input signal properties improvement the device employs digital filters that allow
reducing the random interference effect on the temperature measurement.
Programmable parameters:
- digital filter band , , , ;
- digital filter time constant , , , .
The filters are set for each input independently.
3.2.4.1 The digital filter band allows protecting the measurement route from single interference and is set
in ºС. If the measured value Tизм is different from the previous Tизм–1 by the value larger than
parameter value, the device assigns to it a value equal to (Tизм + ) (Figure 3.5). Thus the characteristic
is smoothed out.
As seen in Figure 3.5, smaller band width of the filter leads to slowing down the device reaction to
temperature change. That is why in case of low interference level or during operation with discontinuous
temperatures it is recommended to increase the parameter value or switch off the filter band action by
setting the (, , ) parameter value to 0.
When working under strong interference, in order to eliminate its impact onto the device operation, it is
necessary to reduce the parameter value.
3.2.4.2 The digital filter eliminates the noise signal components by smoothing it exponentially. The main
characteristic of the exponential filter is τф– the digital filter time constant, ( , , )
interval, within which the temperature reaches the 63,2% from measured value Tизм (Figure 3.6).
Reducing τфwill lead to a faster device reaction onto discontinuous temperature variations, but also will