PN7222 - Pressure sensor IFM - Free user manual and instructions

Product type	Electronic pressure sensor
Brand	IFM
Model	PN7222
Measuring range	0 ... 100 bar
Overload pressure	300 bar
Burst pressure	650 bar
Pressure type	Relative pressure
Display	Digital (1%...105% of measuring range)
Outputs	2 switching outputs (transistor, 250 mA)
Output functions	Hysteresis / Window (N.O. or N.C.)
Supply voltage	18 ... 30 V DC
Current consumption	< 60 mA
Electrical protection	Reverse polarity, overload, short-circuit
Protection rating	IP 67 (models PN7xx0 to PN7xx2)
Fluid contact material	Stainless steel 303, ceramic, FPM (Viton)
Housing material	EPDM/X, FPM, PA, Pocan, PC, Stainless steel 304
Ambient temperature	-25 ... +80 °C
Fluid temperature	-25 ... +80 °C
Dimensions (excluding connection)	91.5 mm x Ø34 mm
Process connection	M12 x 1
Weight	Approx. 100 g

Frequently Asked Questions - PN7222 IFM

How to install the PN7222 pressure sensor?

Before installation, ensure that the pressure is zero in the circuit. Fix the sensor using a suitable process connection (see the 'Port Size' label). Observe the recommended tightening torque.

How to electrically connect the PN7222?

The connection must be made by an electrician. Use a 18-30 V DC power supply according to EN50178 (SELV/PELV). Follow the wiring diagram: pin 1 (BN) = L+, pin 3 (BU) = L-, pin 4 (BK) = OUT1, pin 2 (WH) = OUT2.

What are the available operating modes?

The sensor offers two modes: Run mode (pressure display and normal switching) and Display mode (viewing parameters without modification). Programming mode allows changing the switching thresholds and other settings.

How to set the set points SP1 and rP1?

In programming mode, navigate with the Mode/Enter button until SP1. Press and hold Set to increment the value, then confirm with Mode/Enter. rP1 is set in the same way, but must be lower than SP1.

What do the error codes OL, SC1 and SC2 mean?

OL indicates overpressure (≥110% of measuring range). Flashing SC1 or SC2 indicates a short circuit on the corresponding output; the affected output is then deactivated.

What is the accuracy of the PN7222 sensor?

The repeatability is < ±0.25% of the measuring range. The switching point accuracy is < ±1.0% of the measuring range.

How to clean and maintain the sensor?

Disconnect the power supply before cleaning. Use a soft, dry cloth. Avoid aggressive solvents. Periodically check the condition of the seals and cable.

What is the service life of the sensor?

The sensor is designed for more than 100 million switching cycles under specified conditions. The actual service life depends on the operating conditions (pressure, temperature, fluid).

How to lock the keypad to prevent accidental modification?

In Run mode, press both buttons (Mode/Enter and Set) simultaneously for 10 seconds. The display turns off briefly and 'Loc' appears if a modification is attempted. Repeat the operation to unlock.

What are the usage limitations for gaseous fluids?

For pressurized gaseous fluids, use is always limited to 25 bar maximum, regardless of the sensor's measuring range.

USER MANUAL PN7222 IFM

Line drawing of a digital pressure meter with dual dials and a base (no text or symbols)

InhaltSicherheitshinweise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1. Bestimmungsgemäße Verwendung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2. Betriebsarten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3. Einstellbare Parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4. Montage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5. Elektrischer Anschluß . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6. Programmieren . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7. Inbetriebnahme / Betrieb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8. Maßzeichnung . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9. Technische Daten . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

DEUTSCH

ContentsSafety instructions ...... page 14Controls and visual indication ...... page 141. Function and features ...... page 152. Operating modes ...... page 173. Adjustable parameters ...... page 184. Installation ...... page 195. Electrical connection ...... page 196. Programming ...... page 207. Installation and set-up / operation ...... page 218. Scale drawing ...... page 219. Technical data ...... page 22

ENGLISH

M = Mode/Enter
S = Set

Programmieren / Programming / Programmation

1	1 x 2 x...	Parameter aufrufenSelect parametersSélectionner les paramètres
2	> 5s	Werte einstellen*Set Values*Régler la valeurs*
3	1 x	Werte bestätigenAcknowledgement of valuesConfirmer la valeur

*Wert verringern: Lassen Sie die Anzeige bis zum maximalen Einstellwert laufen. Danach beginnt der Durchlauf wieder beim minimalen Einstellwert.
*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.
*Réduire la valeur du paramètre: Laisser l'affichage de la valeur du paramètre aller jusqu'à la valeur de réglage maximum. Ensuite le cycle recommence à la valeur de réglage minimum.

Sicherheitshinweise

$$ O U T 1 = H n o, O U T 2 = H n c, $$

$$ \mathrm{SP1} = \mathrm{SP2} / \mathrm{rP1} = \mathrm{rP2}. $$

6. Programmieren

Please read the product description prior to installing the unit. Please check that the product is suitable for your application without any restrictions.

If the operating instructions or the technical data are not adhered to, personal injury and/or damage to property may occur.

Please check in all applications that the product materials (see Technical data) are compatible with the media to be measured.

For gaseous media the application is limited to max. 25 bar.

Controls and visual indication

1	7-segment display	display of the system pressure, display of parameters and parameter values
2	2 x LED red	switching status; lights if output I / II has switched
3	Mode / Enter button	selection of the parameters and acknowledgement of the parameter values
4	Set button	setting of the parameter values (scrolling by holding pressed; incremental by pressing briefly)

1. Function and features

• The pressure sensor detects the system pressure,
  • shows the current system pressure on its display (indication as from 1% to 105% of the value of the measuring range)
• 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)

Applications

Type of pressure: relative pressure

Order no.	Measuring range	Permissible overl. pressure	Bursting pressure
PN7xx0/PE7xx0	0 ... 400 bar 600 bar	1000 bar
PN7xx1/PE7xx1	0 ... 250 bar 400 bar	850 bar
PN7xx2/PE7xx2	0 ... 100 bar 300 bar	650 bar
PN7xx3/PE7xx3	0 ... 25 bar 100 bar	350 bar
PN7xx4/PE7xx4	0 ... 10 bar 50 bar 1	50 bar
PN7xx6/PE7xx6	0 ... 2,5 bar 20 bar	50 bar
PN7xx7/PE7xx7	0 ... 1 bar	10 bar	30 bar

Avoid static and dynamic overpressure exceeding the given overload pressure.

Even if the bursting pressure is exceeded only for a short time the unit can be destroyed (danger of injuries)!

For gaseous media the application is limited to max. 25 bar.

Indication of the current system pressure as from 1% of the value of the measuring range. Display "0" does not mean that the system is free of pressure!

Hysteresis:

The hysteresis keeps the switching state of the output stable if the system pressure varies about the preset value. When the system pressure is rising, the output switches when the switch-on point has been reached (SPx); when the system pressure is falling again, the output switches back when the switch-off point (rPx) has been reached.

The hysteresis can be set: 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 pressure varies between the switch-on point (Sx1) 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 display shows the current system pressure, the red LEDs indicate the switching state of the outputs.

Display mode:

(Indication of parameters and the set parameter values)

When the "Mode/Enter" button is pressed for a short time, the unit passes to the Display mode. Internally it remains in the operating mode. Irrespective of this the set parameter values can be read:

• 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)

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 page 3)

	Switch-on point: Upper limit value at which the output changes its switching status.● setting range 1 ... 100% of the value of the measuring range● in steps of 0.5% of the value of the measuring range● indicated in bar
	Switch-off point: Lower limit value at which the output changes its switching status.● setting range 0.5 ... 99.5% of the value of the measuring range● in steps of 0.5% of the value of the measuring range● indicated in barrPx is always lower than SPx. The unit only accepts values which are 0.5% lower than SPx.Changing the switch-on point also changes the switch-off point (the distance between SPx and rPx remains constant).If the distance is higher than the new switch point, it is automatically reduced (rPx is set to the minimum setting value).
	Delay time for the switching outputsdSx = switch-on delay; drx = switch-off delayThe output does not immediately change its switching status when the switching condition is met but when the delay time has elapsed. If the switching condition is no longer met when the delay time has elapsed, the switching state of the output does not change.● setting range: 0 - 0.2 - 0.4 ... 9.8 - 10 - 11 - ... - 49 - 50s● in steps of 0.2 or 1s● indicated in seconds
	Switching functions of the switching outputs4 settings can be selected:Hno = hysteresis / normally openHnc = hysteresis / normally closedFno = window function / normally openFnc = window function / normally closed
dAP	Damping for the switching outputsPressure peaks of short duration or high frequency can be filtered out.dAP-value = response time between pressure change and change of the switching status in ms.the value for dAP defines the switching frequency (f) of the output:
	dAP	3	6	10	17	30	60	125	250	500
	f [Hz]	170	80	50	30	16	8	4	2	1

4. Installation

Before mounting and removing the sensor, make sure that no pressure is applied to the system.

Mount the pressure sensor on a suitable process connection (see type label "Port Size").

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["4: BK"]
    A --> E["3: BU"]
    B --> F["L+"]
    C --> G["BK"]
    D --> H["L-"]
    E --> I["L-"]

Core colours of ifm sockets:

$$ 1 = \text { BN(brown) }, 2 = \text { WH(white) }, $$

$$ 3 = \text {BU} (\text {blue}), 4 = \text {BK} (\text {black}). $$

Programming of complementary outputs:

$$ \text { output 1: } = \text { Hno, output 2: } = \text { Hnc }, $$

$$ \mathrm{SP1} = \mathrm{SP2} / \mathrm{rP1} = \mathrm{rP2}. $$

6. Programming

Take the following 3 steps for 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.

If no button is pressed for 20s during the setting procedure, the unit returns to the operating mode.

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.

With the unit in the locked state is indicated briefly when you try to change parameter values.

7. Installation and set-up / Operation

After mounting, wiring and setting check whether the unit operates correctly.

Faults displayed during operation:

OL	= overload pressure(as from approx. 110% of the max. nominal pressure)
SC1	(flashing) = short-circuit in switching output 1/2;the respective output is switched off
SC2

8. Scale drawing

7-segment display

programming button

process connection

9. Technical data

Operating voltage [V] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 ... 30 DCCurrent rating [mA]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . short-circuit protection, reverse polarity protection / overload protection, integrated WatchdogVoltage drop[V] < 2Current consumption [mA] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Repeatability [% of value of measuring range] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Accuracy of switch point [% of value of measuring range] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Temperature drift [% of value of measuring range / 10 K] . . . . . . . . . . . . . . . . . . . . . . . . . . in the temperature range [°C] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Power-on delay time [s] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Materials (wetted parts) . . . . . stainless steel (303S22); ceramics; FPM (Viton)Housing material. . . . . EPDM/X (Santoprene); FPM (Viton); PA; Pocan;PC (Macrolon); stainless steel (304S15)Protection Px7xx0 ... Px7xx2 . . . IP 67Protection Px7xx3 ... Px7xx7 . . IP 65*Protection class. . . . 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)Switching cycles min. 100 millionAmbient temperature [°C] -25 ... +80Medium temperature [°C] -25 ... +80Storage temperature [°C] -40 ... +100EMCIEC 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

*Increased protection (IP 67) with accessories (Order no. E30038).

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

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