TN7430 - Temperature Controller IFM - Free user manual and instructions

Product type	Electronic temperature controller (temperature sensor)
Brand	IFM
Model	TN7430
Measuring range	-40 to +125 °C (-40 to +257 °F)
Accuracy (switching output)	± (PT1000 + 0.2 K)
Resolution	0.5 °C / 1 °F (output), 0.5 °C / 0.5 °F (display)
Display	Digital 4-digit, switchable °C/°F, 180° orientation
Outputs	2 transistor outputs (N.O./N.C.), hysteresis or window function
Max. output current	250 mA
Supply voltage	18-30 V DC
Power consumption	< 50 mA
Dimensions	Length 110.5 mm, diameter 34 mm; thread G1/2, M12 connector
Weight	Approx. 150 g
Protection rating	IP 67, class III
Ambient temperature	-25 to +70 °C
Storage temperature	-40 to +100 °C
Housing material	Stainless steel 304, PBTP, PC, EPDM/X, FPM (Viton)
Main functions	Temperature measurement, display, 2 programmable outputs (hysteresis/window), calibration, min/max memory
Maintenance and cleaning	No maintenance required; clean with a dry cloth
Safety	Short-circuit, reverse polarity, overload protection; installation by electrician
Spare parts and repairability	Device not repairable; must be replaced if defective
General information	EMC approvals according to IEC 1000-4; integrated watchdog; start-up delay 1.5 s

Frequently Asked Questions - TN7430 IFM

How to set the high set point (SP1 or SP2)?

In Display mode, press Mode/Enter until SP1 or SP2 is displayed. Press and hold Set to change the value, then confirm with Mode/Enter.

What does the display 'OL' or 'UL' mean?

OL indicates a temperature too high (exceeding range), UL indicates a temperature too low.

How to clear the min/max temperature memory?

Display HI or Lo with Mode/Enter, press Set until '---' appears, then confirm with Mode/Enter.

How to switch the display from °C to °F?

In the menu, set parameter d1S to °C or °F (or r°C/r°F for reversed orientation).

How to lock the device to prevent inadvertent programming?

In RUN mode, press both buttons simultaneously for 10 seconds. The display briefly turns off to confirm locking/unlocking.

What is the meaning of error codes SC1 or SC2?

A flashing SC1 or SC2 code indicates a short circuit on the corresponding output. That output is then turned off.

How to program an output for window function?

Set parameter OU1 or OU2 to Fno (normally open in window) or Fnc (normally closed in window).

Can this sensor be used with water or corrosive fluids?

The materials in contact with the fluid are stainless steel 303. Check chemical compatibility with your fluid.

What is the installation procedure?

Mount the sensor on a G1/2 process connection. Electrical connection must be made by an electrician with the power off.

How to calibrate the zero point (CAL)?

Set parameter CAL to offset the measurement from -9.9 to +9.9 °C (in 0.1 °C steps) or equivalent in °F.

USER MANUAL TN7430 IFM

Line drawing of a handheld industrial device with a digital display and central button (no text or symbols)

(M) = Mode/Enter
⑤ = Set

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

OUT1 = Hno, OUT2 = Hnc,

SP1 = SP2 / rP1 = rP2.

6. Programmieren

Controls and visual indication

88.8 Mode/Enter Set ① ② ③ ④ .5 ⑤ ⑥

1	Indicator for display unit	OFF = indication in °C;ON = indication in °F
2	7-segment display	display of the system temperature,display of parameters and parameter values
3	2 x LED red	switching status;lights if output I / II 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

1. Functions and features

• The temperature sensor detects the current system temperature,
  • 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
Switching function (can be selected for each output separately)	hysteresis function / N.O. (Hno)
	hysteresis function / N.C. (Hnc)
	window function / N.O. (Fno)
	window function / N.C. (Fnc)

Measuring range:

°C -40 ... +125
	-40 ... 257°F

Hysteresis:

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

When the system temperature is rising, the output switches when the switch-on point has been reached (SPx); when the system temperature is falling again, the output switches back when the switch-off point (rPx) 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 (SPx) and the switch-off point (rPx), 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 SPx and rPx. SPx = upper value, rPx = lower value.

2. Operating modes

Run mode:

(Normal operating mode)

When the supply voltage has been applied, the unit is in the Run mode. It monitors and switches the transistor outputs according to the set parameters..

The LED display indicates the current system temperature, the red LEDs indicate the switching state of the transistor outputs.

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 press 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)

The unit passes to the programming mode when after the selection of a parameter value (Display mode) the "Set" button is pressed until the display of the parameter value is changed. Internally the unit remains in the operating mode. It continues its monitoring function with the existing parameters until the change has been terminated.

You can change the parameter value by pressing the "Set" button and confirm it by pressing the "Mode/Enter" button. The unit returns to the Run mode when no button has been pressed for 5s.

3. Adjustable parameters

(menu structure: see fold out page)

SP1SP2	Switch-on point: Upper limit value at which the output changes its switching status.
		setting range in steps of
	°C	-39.5 ... +125 0.5
		-39 ... +257 1°F
rP1rP2	Switch-off point: Lower limit value at which the output changes its switching status.
		setting range in steps of
	°C	-40 ... +124.5 0.5
		-40 ... +256 1°F
	rPx is always lower than SPx. The unit only accepts values which are lower than SPx.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 (rPx is set to the minimum setting value).
OU1OU2	Configuration of the switching outputs4 switching functions can be set:Hno = hysteresis / normally openHnc = hysteresis / normally closedFno = window function / normally openFnc = window function / normally closed
d15	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)
CAL	Calibration offsetThe internal measured value (operating value of the sensor) is offset against the real measured value.
		setting range in steps of
	°C	-9.9 ... +9.9 0.1
		-17.5 ... +17.5 0.5°F

HILo

Min-Max memory for system temperatureHi: displays the highest measured temperatureLo: 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.

4. Installation

Mount the temperature sensor to the G ^1/2 process connection.

5. Electrical connection

The unit must only be connected by an 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. Wiring:

graph TD
    A["4: OUT1\n2: OUT2"] --> B["1: BN"]
    A --> C["2: WH"]
    A --> D["3: BU"]
    A --> E["4: BK"]
    B --> F["L+"]
    C --> G["BK"]
    D --> H["BU"]
    E --> I["L-"]

Core colours of ifm sockets:

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

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

Programming of complementary outputs:

output 1: = Hno, output 2: = Hnc,

SP1 = SP2 / rP1 = rP2.

6. 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 5s, 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 5s (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 (in Run mode) both pushbuttons for 10s. As soon as the indication goes out the unit is locked or unlocked. Units are delivered from the factory in the unlocked state.

7. 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 switching output 1/2;
SC2	the respective output is switched off.

8. Scale drawing

7-segment display programming button

Ø34 M12 x1 Ø6,5 G1/2 13 18 33 110,5

49 M12 x1 76,5 30

9. Technical data

Operating voltage [V]....18 ... 30 DCCurrent rating [mA].....250Short-circuit protection,Reverse polarity protection / overload protection,Integrated WatchdogVoltage drop [V].....< 2Current consumption [mA]....< 50

Measuring element....1 x PT 1000 to DIN EN 60751, class BAccuracySwitching output....± (PT 1000 + 0.2 K)Display....± (PT 1000 + 0.2 K + 1⁄2 digit)ResolutionSwitching output [°C/°F]....0.5 / 1Display [°C/°F]....0.5 / 0.5Temperature drift [% of value of measuring range/10 K]....± 0.1

Measuring / display cycle [ms]....200Power-on delay time [s]....1.5

Housing material....stainless steel (304S15); Pocan; PC (Macrolon);EPDM/X (Santoprene); FPM (Viton)Materials (wetted parts)....stainless steel (303S22)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)EMCIEC 1000/4/2 ESD:....4 / 8 KVIEC 1000/4/3 HF radiated:....10 V/mIEC 1000/4/4 Burst:....2 KVIEC 1000/4/6 HF conducted:....10 V

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

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