PV7604 - Pressure switch IFM - Free user manual and instructions

Product Type	Pressure sensor with IO-Link
Model	PV7604
Brand	IFM
Measurement Range	0 to 10 bar
Output Type	PNP/NPN, 4-20 mA, IO-Link
Supply Voltage	18-30 VDC
Current Consumption	< 50 mA
Protection Class	IP67
Housing Material	Stainless steel / PBT
Process Connection	G1/4" internal thread
Electrical Connection	M12 connector, 4-pin
Dimensions (LxWxH)	approx. 60 x 30 x 30 mm
Weight	approx. 0.2 kg
Operating Temperature	-25 to 80 °C
Maintenance	Clean with dry cloth; no moving parts
Safety Notes	Disconnect power before servicing; avoid mechanical shock
Spare Parts	Not applicable; non-repairable unit, replace if faulty

Frequently Asked Questions - PV7604 IFM

How do I connect the IFM PV7604 pressure sensor?

Connect the M12 plug according to the pin assignment: pin 1 (brown) = V+, pin 2 (white) = IO-Link, pin 3 (blue) = V-, pin 4 (black) = switching output. Use a shielded cable for EMC compliance.

What is the default switching point of the PV7604?

The default switching point is set to 50% of the measuring range. For the PV7604 (0-10 bar), that is 5 bar. It can be reconfigured via IO-Link or teach-in.

Can the PV7604 be used in a hydraulic system?

Yes, it is suitable for hydraulic fluids with the proper process connection. Ensure the medium is compatible with stainless steel and PBT. Maximum pressure of 30 bar (static overpressure) must not be exceeded.

How to clean the sensor?

Clean the housing with a soft, dry cloth. For heavy dirt, use a mild detergent. Do not use abrasive cleaners or immerse the sensor in liquid.

What does the LED indicator show?

The PV7604 has a yellow LED that lights up when the switching output is active. A green LED indicates power on. Flashing LEDs signal errors (e.g., short circuit).

How to set a new switching point using the teach-in function?

Apply the desired pressure to the sensor. Briefly press the teach button (located under the label) for < 2 seconds. The output will accept the current pressure as the new switching point. Confirm by a signal change.

What is IO-Link and how is it configured?

IO-Link is a digital communication protocol that allows parameter setting and diagnostics. Use an IO-Link master and configuration software (e.g., IFM moneo or IO-Link Device Tool) to read/write parameters like switching delay, output mode, and scaling.

Is the PV7604 reverse polarity protected?

Yes, the sensor has integrated reverse polarity protection on the power supply lines (pin 1 and 3). However, incorrect connection of output lines may cause damage.

What is the environmental rating of the PV7604?

The device has IP67 protection, meaning it is dust-tight and can withstand temporary immersion in water up to 1 meter depth for 30 minutes. Also, it is rated for ambient temperatures of -25 to 80 °C.

How to troubleshoot no output signal?

Check the power supply (18-30 VDC) and verify the wiring. Ensure the yellow LED is off if output is not active. Use a multimeter to measure voltage at the M12 pins. If the sensor does not respond, it may be defective and must be replaced.

USER MANUAL PV7604 IFM

Operating instructions Electronic pressure sensor for industrial applications

PV76xx

UK

80262454 / 00 03 / 2020

Line drawing of a mechanical component with a cylindrical top and flanged base (no text or symbols)

Contents

1 Preliminary note....2
2 Safety instructions .... 2
3 Functions and features .... 3

3.1 Applications .... 3
3.2 Use in hydraulic systems 4

4 Function....4

4.1 Communication, parameter setting, evaluation .... 5
4.2 Switching function....5
4.3 IO-Link 6

5 Installation....6
6 Electrical connection....7
7 Parameter setting 8

7.1 Parameter setting via PC....8
7.2 Parameter setting via the memory plug 8
7.3 List of the parameters....9

8 Factory setting 10

1 Preliminary note

Symbols used

▶ Instructions
→ Cross-reference

Important note

Non-compliance may result in malfunction or interference.

Information

Supplementary note.

2 Safety instructions

- The device described is a subcomponent for integration into a system.

• The manufacturer is responsible for the safety of the system.
• The system manufacturer undertakes to perform a risk assessment and to create a documentation in accordance with legal and normative requirements

to be provided to the operator and user of the system. This documentation must contain all necessary information and safety instructions for the operator, the user and, if applicable, for any service personnel authorised by the manufacturer of the system.

• Read this document before setting up the product and keep it during the entire service life.
• The product must be suitable for the corresponding applications and environmental conditions without any restrictions.
• Only use the product for its intended purpose (→ Functions and features).
• Only use the product for permissible media (→ Technical data).
• If the operating instructions or the technical data are not adhered to, personal injury and/or damage to property may occur.
• The manufacturer assumes no liability or warranty for any consequences caused by tampering with the product or incorrect use by the operator.
• Installation, electrical connection, set-up, programming, configuration, operation and maintenance of the product must be carried out by personnel qualified and authorised for the respective activity.
• Protect units and cables against damage.

3 Functions and features

The device monitors the system pressure of machines and installations.

3.1 Applications

• Type of pressure: relative pressure

Order number	Measuring range Pressure rating Bursting pressure
Pressure sensors with 1/4 external thread - 18 NPT
	psi bar psi bar psi bar
PV7600 0...5	800 0...400	14500 1000	24655 1700
PV7601	0...3625	0...250	9060	625	17400	1200
PV7602	0...1450	0...100	3625	250	14500	1000
PV7623	0...870	0...60	2175	150	13050	900
PV7603	-14.5...360	-1...25	940	65	8700	600
PV7604	-14.5...145	-1...10	360	25	4350	300

Avoid static and dynamic overpressure exceeding the indicated pressure rating by taking appropriate measures. The indicated bursting pressure must not be exceeded. Even if the bursting pressure is exceeded only for a short time, the unit may be destroyed. ATTENTION: Risk of injury!

Pressure Equipment Directive (PED):

The units with a pressure rating of ≤ 14500 psi ( ≤ 1000 bar) comply with the Pressure Equipment Directive. They are designed for group 2 fluids and are manufactured in accordance with sound engineering practice. Use of media from group 1 fluids on request.

If the cable length exceeds 30 m or if used outside buildings, there is a risk of overvoltage pulses from external sources. We recommend to use the unit in protected operating environments and to limit overvoltage pulses to max. 500 V.

The units are vacuum resistant.

3.2 Use in hydraulic systems

Restrictor in the process connection:

In hydraulic systems, highly dynamic effects such as pressure peaks, cavitation etc. may arise depending on the operating conditions. To reduce these effects on the measuring element of the sensor, a diaphragm attachment is integrated into the process connection.

The specific thread pitch of the diaphragm attachment has the effect of a hole of 0.3 mm.

Please note:

High viscosity may reduce the response time by some milliseconds. Heavy soiling may affect the functionality.

4 Function

• The unit generates output signals according to the operating mode and the parameter setting.
• It also provides the process data, output signals and diagnostic messages via IO-Link.

4.1 Communication, parameter setting, evaluation

OUT1 (pin 4)	• Switching signal for system pressure limit value• Communication via IO-Link
OUT2 (pin 2) •	Switching signal for system pressure limit value

4.2 Switching function

OUTx changes its switching status if it is above or below the set switching limits (SPx, rPx). The following switching functions can be selected:

• Hysteresis function / normally open: [ou1] / [ou2] = [Hno] (→ Fig. 1).
• Hysteresis function / normally closed: [ou1] / [ou2] = [Hnc] (→ Fig. 1).

First the set point (SPx) is set, then the reset point (rPx). The hysteresis defined remains even if SPx is changed again.

• Window function / normally open: [ou1] / [ou2] = [Fno] (→ Fig. 2).
• Window function / normally closed: [ou1] / [ou2] = [Fnc] (→ Fig. 2).

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

P = system pressure; HY = hysteresis; FE = window

When set to the window function the set and reset points have a fixed hysteresis of 0.25 % of the measuring span.

4.3 IO-Link

This unit has an IO-Link communication interface which requires an IO-Link-capable module (IO-Link master) for operation.

The IO-Link interface enables direct access to the process and diagnostic data and provides the possibility to set the parameters of the unit during operation.

In addition communication is possible via a point-to-point connection with a USB adapter cable ( 7).

The IODDs necessary for the configuration of the unit, detailed information about process data structure, diagnostic information, parameter addresses and the necessary information about the required IO-Link hardware and software can be found at www.ifm.com.

5 Installation

Before installing and removing the unit:

Make sure that no pressure is applied to the system.

▶ Insert the unit in a suitable process connection.
▶ Tighten firmly. Recommended tightening torque:

Final value of the measuring range Tightening torque in Nm

up to 5800 psi (400 bar) max. 50

Depends on lubrication, seal and pressure load.

6 Electrical connection

The unit must be connected by a qualified electrician.

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

Voltage supply to EN 50178, SELV, PELV.

▶ Disconnect power.
▶ Connect the unit as follows:

Core colours
BK black
BN brown
BU blue
WH white
			OUT1: switching output or IO-LinkOUT2: switching outputColours to DIN EN 60947-5-2
Example circuits
2 x positive switching 2 x negative switching
1 x positive switching, 1 x IO-Link 1 x negative switching, 1 x IO-Link

7 Parameter setting

The unit can only be configured via IO-Link function.

▶ Prepare IO-Link hardware and software for parameter setting.
▶ Connect unit with e.g. IO-Link interface ( 7.1) or programmed memory plug ( 7.2).
▶ Set the parameters.
▶ Put the unit into operation.

The parameters can be set before installation or during operation.

Changing parameters during operation can influence the function of the plant.

▶ Ensure that there will be no malfunctions in the plant.

7.1 Parameter setting via PC

For parameter setting an IO-Link software is necessary (e.g. LINERECORDER SENSOR).

IO-Link interfaces from ifm are available for the connection of the unit via the USB interface of a computer → www.ifm.com.

▶ Prepare computer, software and interface.
▶ Connect unit with IO-Link interface.
▶ Follow the menu of the IO-Link software.
▶ Set the parameters.
▶ Put the unit into operation.

Adjustable parameters ( 7.3).

7.2 Parameter setting via the memory plug

A parameter set can be written / transferred to the unit via a memory plug (storage module) → www.ifm.com.

▶ Load suitable parameter set (e.g. using a PC) to the memory plug
▶ Connect memory plug between sensor and socket

When voltage is supplied, the parameter set is transferred from the memory plug to the sensor.
▶ Remove memory plug.

▶ Put the unit into operation.

Adjustable parameters ( 7.3).

The memory plug can also be used to save the current parameter setting of a unit and to transfer it to other units of the same type.

You can find more information about the memory plug in the technical documentation → www.ifm.com.

7.3 List of the parameters

Parameter Function
SPx/rPx Upper	per / lower limit value for system pressure at which OUTx switches with hysteresis setting.Prerequisite: setting OUTx is [Hno] or [Hnc].
FHx/FLx Upper	per / lower limit value for system pressure at which OUTx switches with window setting.Prerequisite: OUTx setting is [Fno] or [Fnc].
ou1 Output function for OUT1:Switching signal for the pressure limit values: hysteresis function [H ..] or window function [F ..], either normally open [. no] or normally closed [. nc].
ou2 Output function for OUT2:Switching signal for the pressure limit values: hysteresis function [H ..] .] or window function [F ..], either normally open [. no] or normally closed [. nc].
dS1 / dS2 Switching delay for OUT1 / OUT2.
dr1 / dr2 Switch-off delay for OUT1 / OUT2.
P-n Output logic: pnp / npn.
Lo Minimum value memory for system pressure.
Hi Maximum value memory for system pressure.
dAP Damping of the switch point.
coF Zero-point calibration
HIPS	Setting of the threshold for the overload counter
HIPC	Number of overload processes

For more information see the IODD description ( www.ifm.com) or the context-specific parameter descriptions of the used IO-Link software.

8 Factory setting

	Factory setting User setting
SP1 25% VMR *
rP1 23% VMR *
ou1 Hno
ou2 Hno
SP2 75% VMR *
rP2 73% VMR *
dS1 0.0
dr1 0.0
dS2 0.0
dr2 0.0
P-n PnP
dAP 0.06
coF 0
HIPS VMR
HIPC 0

* = The specified per cent value of the final value of the measuring range (VMR) is set.

UK

More information at www.ifm.com