TN2930 - Temperature sensor IFM - Free user manual and instructions

Product type	Electronic temperature sensor
Brand	IFM
Model	TN2930
Measurement range	-40…+125°C / -40…+257°F
Measuring element	Pt1000
Outputs	1 switching output (transistor, 50 mA) + 1 analog output (4…20 mA or 0…10 V)
Switching output accuracy	±(Pt1000 + 0.2 K)
Analog output accuracy	±(Pt1000 + 0.2 K + 0.4% of measurement range)
Display resolution	0.5°C / 0.5°F
Supply voltage	20…30 V DC
Power consumption	< 66 mA
Display	Digital 3 digits, switchable °C/°F, 180° orientation
Indicators	Red LED (switching status), unit indicator
Process connection	M18 x 1.5 (adapter required)
Electrical connection	M12 connector (4 pins)
Housing material	Stainless steel 304, PBTP, PC
Material in contact with fluid	Stainless steel 316L
Protection rating	IP67
Ambient temperature	-25…+70°C
Storage temperature	-40…+100°C
Max pressure	300 bar
Maintenance	Maintenance-free; periodically check proper operation
Switching functions	Hysteresis (NO/NC) or window (NO/NC)
Programming	Via Mode/Enter and Set buttons, lockable

Frequently Asked Questions - TN2930 IFM

How to configure the switching output?

Press Mode/Enter several times until OU1 is displayed. Use Set to select the function: Hno (hysteresis normally open), Hnc (hysteresis normally closed), Fno (window normally open) or Fnc (window normally closed). Confirm with Mode/Enter.

How to change the display unit °C/°F?

Navigate to parameter d,5 (menu M). Press Set to scroll through options: °C, °F, r°C (inverted display) or r°F. Confirm with Mode/Enter. First set the unit before defining thresholds to avoid rounding errors.

What does the error 'OL' on the display mean?

OL indicates a temperature too high, exceeding the measurement range. Check that the probe is not exposed to an excessive heat source. The device automatically returns to normal operation when the temperature returns to the range.

How to clean the temperature sensor?

Clean the outside of the housing with a soft, dry cloth. For parts in contact with the fluid, use a non-aggressive cleaner compatible with Stainless steel 316L. Avoid high-pressure water jets. Disconnect the power supply before cleaning.

What is the required supply voltage?

The device requires a supply voltage of 20...30 V DC according to EN50178 (SELV/PELV). The consumption is less than 66 mA. Observe the wire colors: 1 BN = L+, 2 WH = analog output, 4 BK = switching output, 3 BU = L-.

How to mount the sensor in a pipe?

Use a suitable adapter (accessory). Screw the adapter onto the process connection. Place the sensor on the adapter and tighten the M18 nut with a torque max. 50 Nm. The probe must penetrate at least 12 mm into the pipe. Grease the nut and threads, not the probe tip.

How to clear the min/max temperature memories?

Press Mode/Enter until HI or Lo is displayed. Hold down Set until '- - -' appears. Briefly press Mode/Enter to confirm. Clear the memory after the first commissioning under normal conditions.

How to lock the sensor to prevent accidental programming?

Press both buttons (Mode/Enter and Set) simultaneously for 10 seconds. The display turns off to confirm the lock. Repeat the operation to unlock. The device is delivered unlocked.

What is the accuracy of the analog output?

The accuracy is ±(Pt1000 + 0.2 K + 0.4% of measurement range). For example, for a span of 165°C, the additional error is about 0.66°C. The resolution of the analog output is 0.125°C (or 0.23°F).

How to configure the analog output to 4…20 mA?

In the menu, select parameter rOU. Use Set to choose I (4…20 mA) or U (0…10 V). Confirm with Mode/Enter. Then set ASP (minimum value) and AEP (maximum value) with a difference of at least 10°C/18°F.

USER MANUAL TN2930 IFM

Line drawing of a mechanical device with a cylindrical component and a bolted shaft (no text or symbols)

Inhalt

M = Mode/Enter
S = Set

Eingestellte Parameterwerte Set parameter values Valeurs de paramètre réglées

	WerkseinstellungFactory settingRéglage de base	Benutzer-EinstellungUser settingRéglage utilisateur
SP1 37,0
rP1 35,0
OU1 Hno
ASP 0,0
AEP 100
AOU I
diS °C
CAL 0,0
Verriegelung aktivLocking activeVerrouillage actif	NEINNONON

① 7-segment display
② programming button
③ internal thread M18x1.5

3 = BU (blau), 4 = BK (schwarz)

Programmieren

Technische Daten

Controls and visual indication

1	Indicator for display unit	OFF = indication in °C;ON = indication in °F.
2	7-segment display	Display of the temperature,display of parameters and parameter values.
3	LED red	Switching status;lights if the output has switched.
4	LED red LED ON = displayed temperature + 0.5°
5	Set button	Setting of the parameter values (scrolling by holding pressed; incremental by pressing briefly).
6	Mode / Enter button	Selection of the parameters and acknowledgement of the parameter values.

Functions and features

The temperature sensor

• detects the temperature of liquids and gases as well as the surface temperature of solids,
  • shows the current system temperature on its display (in °C or °F),
• and generates 2 output signals according to the set output configuration.

output 1	output 2
hysteresis function / N.O. (Hno)	analogue 4 ... 20 mA (I)
hysteresis function / N.C. (Hnc)
window function / N.O. (Fno)	analogue 0 ... 10 V (U)
window function / N.C. (Fnc)

Measuring range

°C -40	... +125
	-40 ... 257°F

Operating modes

Run mode:

Normal operating mode

At power on the unit is in the Run mode. It carries out its measurement and evaluation functions and provides output signals according to the set parameters.

The value of the analog output depends on the temperature.

The LED display indicates the current temperature, the red LED indicates the switching state of the transistor output.

Display mode:

Indication of parameters and the set parameter values

When the "Mode/Enter" button is pressed briefly, the unit passes to the Display mode which allows parameter values to be read. The internal sensing, processing and output functions of the unit continue as if in Run mode.

• The parameter names are scrolled with each pressing of the "Mode/Enter" button.
• When the "Set" button is pressed briefly, the corresponding parameter value is displayed for 5s. After another 5s the unit returns to the Run mode.

Programming mode:

Setting of the parameter values

While viewing a parameter value pressing the "Set" button for more than 5s causes the unit to enter the programming mode. You can alter the parameter value by pressing the "Set" button and confirm the new value by pressing the "Mode/Enter" button. The internal sensing, processing and output functions of the unit continue as if in Run mode with the original parameter values unless a new value is confirmed.

The unit returns to the Run mode when no button has been pressed for 5s.

Installation

■Installation in pipes / vessels

The unit is adaptable for various process fittings (adapters to be ordered separately as accessories).

1

thread M18 x 1.5

1. Lubricate the nut (3) and all threads with grease to ensure the nut can be loosened and tightened several times.
   Note: No grease must be applied to the sensor tip (A).
2. Screw the suitable adapter (2) onto the process fitting (1).
3. Insert the temperature sensor into the adapter. While keeping the unit aligned tighten the nut (3); (max. tightening torque 50 Nm).

Insertion depth of the sensor: min. 12 mm in the pipe. When the adapters are used which are available as accessories, the correct depth is ensured. Mounting dimension with adapter:

■ Use as a contact sensor for solids

(accessories required)

Maximum contact pressure: 3kN (corresponds to a tightening torque on the nut of approx. 10Nm, page 19, figure 1 / no.3).

Please note the possible difference between the medium temperature and the surface temperature. It can be compensated for by means of a zero-point calibration of the sensor ( menu point CAL, page 23).

Electrical connection

The unit must be connected by a suitably qualified electrician.

The national and international regulations for the installation of electrical equipment must be observed.

Voltage supply to EN50178, SELV, PELV.

Disconnect power before connecting the unit as follows:

graph TD
    A["Component"] --> B["1 BN"]
    A --> C["2 WH"]
    A --> D["4 BK"]
    A --> E["3 BU"]
    B --> F["L+"]
    C --> G["Ground"]
    D --> H["Ground"]
    E --> I["L-"]

Core colours of ifm sockets:

1 = BN (brown), 2 = WH (white)

3 = BU (blue), 4 = BK (black)

Programming
1			Press the Mode/Enter button several times until the respective parameter is displayed.
2			Press the Set button and keep it pressed. The current parameter value is indicated for 5 s, then the value is increased* (incremental by pressing briefly or scrolling by holding pressed).
3			Press the Mode/Enter button briefly (= acknowledgement). The parameter is displayed again, the set parameter value becomes effective.
Wait 5 s (the unit passes to the operating mode and the current measured value is indicated again), or start again with step 1 to program other parameters.

*Decrease the value: Let the display of the parameter value move to the maximum setting value. Then the cycle starts again at the minimum setting value.

Locking / unlocking:

The unit can be electronically locked to prevent unwanted adjustment of the set parameters: Press both pushbuttons for 10s. Indication goes out (= acknowledgement of locking / unlocking).

Units are delivered from the factory in the unlocked state.

Installation and set-up / operation

Check the safe functioning of the unit. The operation is maintenance-free. Failure indication:

OL	Too high a temperature.
UL	Too low a temperature
SC1	Flashing: Short-circuit in the switching output (OUT 1).The output is switched off as long as the short circuit continues.

Technical information / Functioning / Parameters

Adjustable parameters

SP1	Switch-on point: Upper limit value at which the output changes its switching status.
rP1	Switch-off point: Lower limit value at which the output changes its switching status.rP1 is always lower than SP1. The unit only accepts values which are lower than SP1.Changing the switch-on point also changes the switch-off point (the hysteresis remains constant).If the hysteresis is higher than the new switch point, it is automatically reduced (rP1 is set to the minimum setting value).Setting range:
		SP1 rP1		in steps of
	°C			0.5-39.5 ...
	°F	-39 ... +257 -40 ... +256		1
OU1ASP	Configuration of the switching output4 switching functions can be set:Hno = hysteresis / normally openHnc = hysteresis / normally closedFno = window function / normally openFnc = window function / normally closedLower end of analogue outputMeasured value for which the output signal is 4mA / 0V.
REP	Upper end of analogue outputMeasured value for which the output signal is 20 mA / 10 V.Minimum distance between ASP - AEP: 10°C / 18°F.Setting range:
		ASP AEP		in steps of
	°C			0.5-40 ... -115 .
	°F	-40 ... +239 -22 ... +257		1
AOU	Output function for the analog output2 options can be selected:I = 4 ... 20 mA / U = 0 ... 10 V
d1S	Setting of the display4 options can be selected:°C = display in °Celsius°F = display in °Fahrenheitr°C = display in °Celsius (inverted)r°F = display in °Fahrenheit (inverted)Select the display unit before setting the switch points (SP1, rP1) and the limits for the analog output signal (ASP, AEP). This avoids rounding errors generated internally during the conversion of the units and enables exact setting of the values.Units are delivered from the factory with dis = °C
CAL	Calibration offsetThe internal measured value (operating value of the sensor) is offset against the real measured value.
		setting range		in steps of
	°C			0.1-9.9 ... +9.9
	°F	-17.5 ... +17.5		0.5
HI Lo	Min-Max memory for system temperature• Hi: displays the highest measured temperature• Lo: displays the lowest measured temperatureErase the memory:- Press the "Mode/Enter" button until HI or Lo is displayed.- Press the "Set" button and keep it pressed until "-" is displayed.- Then press the "Mode/Enter" button briefly.It is recommended to erase the memory as soon as the unit starts working under normal operating conditions.

Hysteresis:

The hysteresis keeps the switching state of the outputs stable if the system temperature varies about the preset value.

With the system temperature rising, the output switches when the switch-on point has been reached (SP1). With the system temperature falling, the output does not switch back until the switch-off point (rP1) has been reached. The hysteresis can be adjusted: First the switch-on point is set, then the switch-off point with the requested difference.

Window function:

The window function enables the monitoring of a defined acceptable range.

When the system temperature varies between the switch-on point (SP1) and the switch-off point (rP1), the output is switched (window function/NO) or not switched (window function/NC).

The width of the window can be set by means of the difference between SP1 and rP1. SP1 = upper value, rP1 = lower value.

Technical data

Measuring range. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -40...+125°C / -40...+257°F

Operating voltage [V] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 ... 30 DCCurrent rating [mA]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Short-circuit protection,Reverse polarity protection / overload protection,Integrated WatchdogVoltage drop [V]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < 2Current consumption [mA] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < 66

Measuring element . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 x Pt 1000 to DIN EN 60751, class BAccuracy (the values apply to flowing water)Switching output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ± (Pt 1000 + 0.2 K)Analog output . . . . . ± (Pt 1000 + 0.2 K + 0.4% of the set measuring span)Display . . . . . . . . . . . . . . . . . . . . . . ± (Pt 1000 + 0.2 K + 1⁄2 digit)ResolutionSwitching output [°C/°F] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.5 / 1Analog output [°C/°F] . . . . . . . . . . . . . . . . . . . . . . . . 0.125 / 0.23Display [°C/°F] . . . . . . . . . . . . . . . . . . . . . . . . 0.5 / 0.5Temperature drift [% of value of measuring range/10 K] . . . . . . . . ± 0.1

Measuring / display cycle [ms] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200Dynamic response (according to DIN 60751) [s] T0.5 = 1 / T0.9 = 3Power-on delay time [s] 1.5

Housing material . . . . . . . . stainless steel (304S15); Pocan; PC (Macrolon);EPDM/X (Santoprene); FPM (Viton)Materials (wetted parts) stainless steel (316S12)Operating temperature [°C] -25 ... +70Storage temperature [°C] -40 ... +100Protection IP 67, IIIInsulation resistance [MΩ] >100 (500 V DC)Shock resistance [g] 50 (DIN / IEC 68-2-27, 11ms)Vibration resistance [g] 20 (DIN / IEC 68-2-6, 10 - 2000 Hz)Permissible overl. pressure [bar] 300EMCEN 6100-4-2 ESD: 4 / 8 KVEN 6100-4-3 HF radiated: 10 V/mEN 6100-4-4 Burst: 2 KVEN 6100-4-6 HF conducted: 10 V

1 = BN (brun), 2 = WH (blanc),

3 = BU (bleu), 4 = BK (noir)

Programmation

Données techniques