Novatek TR-101 User guide

DIGITAL TEMPERATURE RELAY

TR-101

USERS MANUAL

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Rated resis­R0, Оhm

national

international

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

W100 =1,4260

W100 =1,4280

50

50М

Cu50

Cu’50

-50…+200

100

100М

Cu100

Cu’100

-50…+200

W100 = 1,6170

100

100Н

Ni100

-50…+180

120

120Н

Ni120

-50…+180

500

500Н

Ni500

-50…+180

1000

1000Н

Ni1000

-50…+180

W100 = 2,0805

W100 = 2,0805

990 by 25°C

807 by 0°C

PTC1000

EKS111

-50…+100

Supply voltage, V

24 – 260 AC/DC

Recommended fuse, A

1

Pt50, Pt100, Pt500, Pt1000,
Ni500, Ni1000, PTC1000

Quantity of sensors connectable, pcs

1 – 4

This manual is provided in order to introduce the operat ing 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;

• programmin g by th e fro nt 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

tance at 0 °C,

Unique sensor curve (USC) notation

Temperature range

Platinum

Copper

Nickel

Other

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

Type of temperature measurement sensors

TR-101

Cu50, Cu100, Ni100, Ni120,

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Sensors wiring schematic

2 / 3 wires

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

- terminal block

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, 24V DC, times, no less than

100 thousand

Mounting onto standard 35 mm DIN-rail

Mounting position any

Max. current at

~ 250 V AC

Max. current for

U = 30V D.C.

1,0

10 А

4000 VА

440 V

3 А

Sensor wire length, depending on the wiring schematic, m

Protection degree: - enclosure

- electrical life 10А, 250V AC, times, no less than

Output contacts specification

2- wire, up to 5

ІР30

100 thousand

Cos ϕ

Maximum power Max. voltage ~

2.2 The device is designed for operating in the following environment:

- ambient temperature: from - 35 to +55 °C;

- storage temperature: from - 45 to +7 0 °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

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1 1 0

1

2

3

4

5

6

7

8

9

10

Figure 3.1 – TR-101 dimensions

3.1.2 Displaying and control

Figure 3.2. presents the TR-101 front panel exterior.

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

• use

• to enter the parameter edit mode - press

indicator (fig. 3.2, 8) shall light.

keys to toggle channels;

key to enter the parameter view mode;

key and hold it within 7 seconds, the “setting”

, , ,

• to save modified value – use

• if no key has been pressed within 20 sec, TR-101 will display

to the initial state.

3.2 OPERATING PRINCIPLE AND INPUT SIGNAL PROCESSING

3.2.1 Operating principle

key;

sign(within 1 sec), and will switch

In course of its operation, TR-101 performs input sensors scanning, then, based on the data obtained,

TR-101

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calculates the current temperature value and outputs it on the digit al 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 (T

изм) is added with a user specified value δ. Figur e 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

T

изм 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 T
parameter value, the device assigns to it a value equal to (T

изм is different from the previous Tизм–1 by the value larger than

изм + ) (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
interval, within which the temperature reaches the 63,2% from measured value T

Reducing

τф will lead to a faster device reaction onto discontinuous temperature variations, but also will

τф – the digital filter time constant, ( , , )

изм (Figure 3.6).

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TR-101

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reduce its protection against interference. Increasing

τф value incr eases the device response rate, while

noise is significantly suppressed.

Figure 3.5 Figure 3.6

3.2.5 Two-position regulator (two-position control)

In the two-position control mode the device works according to one of the two logic types, Figure 3.7:

• Logic №1 (heater) is used to control a heater operation (tubular electric heaters, for instance), or to
produce warning that the current temperature value (Т
that the output relay initially closes at values of Т
closes again at Т

тек < Туст – HS thus effecting the two-position control by Туст setting with the HS

тек < Туст – HS, t hen opens at Ттек > Туст + HS and

тек) is less than t he setting value (Туст). Up on

hysteresis.

• Logic №2 (cooler) is used to control a cooler operation (a fan, for instance), or a warning of exceeding

уст setting value. Upon that t he output relay initially is ON at values of Ттек > Туст + HS, then is OFF at

Т
Т

тек < Туст and ON again at Ттек > Туст + HS.

If using as compressor cooler recommended define HS in

such a manner to provide the normal (minimum) compressor off time to avoid the device damage.

Figure 3.7 - Diagram of output relay function based on the logic type

Programmable parameters:

Т

уст – temperature setting ( , , );

HS – hysteresis

( , , ) – output relay function logic.

( , , );

3.2.6 PID- controller (proportional-plus-integral-plus-derivative control)

3.2.6.1 PID control general principles

TR-101

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