LR8020 - Detector IFM - Free user manual and instructions

USER MANUAL LR8020 IFM

CE

Operating instructions Electronic level sensor

LR8020

LXxxxx

Contents

1 Preliminary note....4

1.1 Symbols used ....4

2 Safety instructions ....4

3 Items supplied....5

4 Getting started 5

4.1 Installation / Electrical connection ....5

4.2 Parameter setting ....5

4.3 Example application ....5

5 Functions and features....6

5.1 Applications ...... 6

5.2 Restriction of the application area ....7

5.3 Special information on DNV-GL approval 8

6 Function....8

6.1 Measuring principle ....8

6.2 Set-up via IO-Link....9

6.3 Switching function....9

6.4 Probes for different tank heights....10

6.5 Defined state in case of a fault 10

6.6 IO-Link 10

7 Installation....10

7.1 Installation location / environment, operation with a single probe ..... 10

7.1.1 Minimum distances for installation in closed metal tanks 11

7.1.2 Installation in pipes (bypass pipe, still pipe) 12

7.1.3 Applications with viscous and fast flowing media 12

7.1.4 Heavy soiling 13

7.1.5 Fill openings 13

7.1.6 Heavy foam build-up and turbulence....14

7.1.7 Notes on tank adjustment....15

7.2 Installation location / environment, operation with a coaxial probe ....16

7.3 Installation of the probe ....17

7.3.1 Attaching the probe....17

7.3.2 Installation of the coaxial pipe 17

7.4 Probe length 18

7.4.1 Shorten the probe....18
7.4.2 Determine probe length L for single probes....19
7.4.3 Shortening of the coaxial pipe 19
7.4.4 Determine probe length L for coaxial probes....19

7.5 Installation of the unit with single probe....20

7.5.1 Installation to G ^3/4 process connection directly in the tank lid ......20
7.5.2 Installation in the tank lid using a G ^3/4 flange plate ....20
7.5.3 Installation in open metal tanks 21
7.5.4 Installation in plastic tanks....22

7.6 Installation of the unit with coaxial probe in the tank 23
7.7 Alignment of the sensor housing 23

8 Electrical connection....24
9 Operating and display elements 25

10 Parameter setting 25

10.1 Parameter setting using PC and USB IO-Link master....25
10.2 Parameter setting via the memory plug....25
10.3 Parameter setting during operation 26
10.4 Adjustable parameters....26

11 Operation....28

11.1 Operation with single probe 28
11.2 Operation with coaxial probe 28
11.3 Function check....29
11.4 Operating and diagnostic messages via IO-Link 29
11.5 Output response in different operating states....29

12 Technical data and scale drawing....29
13 Maintenance / transport....30
14 Factory setting ....31
15 Notes on parameter setting via IO-Link 32
15.1 Unit locking / data storage (as from IO-Link V1.1)....32

1 Preliminary note

1.1 Symbols used

▶ Instructions

▷ Reaction, result

[...] Designation of keys, buttons or indications

→ 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 of the system 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, operation and maintenance of the unit must be carried out by qualified personnel authorised by the machine operator.
• Protect units and cables against damage.

3 Items supplied

• Level sensor LR8020 or LXxxxx
- Operating instructions

▶ In addition, the following is necessary for installation and operation ( → Accessories):

• Probe (→ 11.1)
  • Optional: coaxial pipe ( → 11.2)
• Mounting material (→ 11.1)

Only use accessories from ifm electronic gmbh! The optimum function is not ensured when using components from other manufacturers.

Accessories: www.ifm.com

4 Getting started

For the most frequent applications the quick set-up described below is possible. The quick set-up does not replace observance of the other chapters.

4.1 Installation / Electrical connection

▶ Install the unit correctly ( → 7) and ( → 8)

4.2 Parameter setting

On delivery the unit is not operational. Notes on parameter setting via IO-Link ( → 15)

4.3 Example application

▶ Enter probe length (parameter [LEnG]). Example: [LEnG] = [1000] mm.
▶ Select the medium (parameter [MEdI]). Example: [MEdI] = [MId].
▶ Select type of probe used (parameter [Prob]). Example: [Prob] = [rod].
▶ Transfer the sensor data to the unit.
▶ Carry out tank adjustment according to the installation (button [tREF xxx]).
▶ Now all other settings can be carried out.

▷ The unit is ready for operation.
▶ Check whether the unit operates correctly.

5 Functions and features

The unit continuously detects the level in tanks.

A PC with USB IO-Link master or a correspondingly programmed memory plug or a configured IO-Link environment is required to set the parameters ( → 6.6), ( → 10).

According to the current state of science the operation of the unit can be classified to be harmless to human health. The radiated energy of the microwaves is, for example, much below that of mobile phones.

5.1 Applications

• Water, water-based media
- Oils, oil-based media (only for operation with coaxial probe)
- For applications under difficult environmental conditions (e.g. weather or harsh cleaning processes) → Technical data sheet.

Application examples:

• Detection of coolant emulsion in a machine tool.
• Detection of cleaning liquid in a parts cleaning system.
• Monitoring of hydraulic oil in a hydraulic power unit. (Only for operation with coaxial probe.)
- Detection of Diesel fuel (Only for operation with coaxial probe, in non hazardous areas!)

5.2 Restriction of the application area

Incorrect measurements / signal loss may be caused by the following media:

• highly absorbing surfaces (e.g. foam)
• intensely bubbling surfaces
• Media which are very inhomogeneous, separate from each other thus forming separation layers (e.g. oil layer on water).

▶ Check the function by performing an application test.

▶ Installation in a steady area ( → 7.1.6)

▷ In case of signal loss, the unit switches the outputs to a defined state ( → 6.5).

- Use the product only for media to which the wetted materials are sufficiently resistant (→ Technical data sheet).

- The unit is not suitable for bulk materials (e.g. plastic granulates).

In case of operation with single probe:

• The unit is not suitable for applications where the probe is subjected to permanent and high mechanical stress (e.g. heavy movement of viscous media or fast flowing media).
• When used in plastic tanks, deterioration caused by electromagnetic interference from other devices may occur (noise immunity to EN61000-6-2). Refer to: (→ 7.5.4).
• When operating with a single probe and small tanks (probe lengths shorter than 200 mm and less than 300 mm distance to the tank wall), interference from the tank (resonances) may occur in rare cases.
  Corrective measures: ( → 7.1).

In case of operation with coaxial probe:

• Not suitable for soiled or viscous media, media containing solid particles and media prone to formation of deposit.
  • Maximum viscosity: 500 mPa·s (at 20°C).

5.3 Special information on DNV-GL approval

For use under DNV-GL conditions (if device approval is available), observe the following instructions:

• Single probes and coaxial probes up to a length of 500 mm can be operated without support.
• For probe lengths from 500 mm to 2000 mm, coaxial probes must be used. These must be supported additionally, either at half length or at the end. The support must be suited to damp occurring vibrations.
• If using a coaxial pipe with a length of 700 mm or longer, additional centering pieces must be mounted in this coaxial pipe (→ Accessories).

6 Function

6.1 Measuring principle

The unit operates on the principle of guided wave radar. It measures the level using electromagnetic pulses in the nanosecond range.

The pulses are transmitted by the sensor head and guided along the probe (Fig. 6-1). When they hit the medium to be detected, they are reflected and guided back to the sensor (Fig. 6-2). The time between transmitting and receiving the pulse directly relates to the travelled distance (D) and the current level. The reference for distance measurement is the lower edge of the process connection.

In case of operation with a coaxial probe, the guided wave runs only along the inside of the coaxial pipe (Fig. 6-3).

6.2 Set-up via IO-Link

The device parameters are set via the IO-Link interface ( → 6.6) and ( → 10).

6.3 Switching function

The unit signals via the switching outputs (OUT1... OUT4) that a set limit has been reached or that the level is below the limit.

The switching limits refer to the lower probe end.

The following switching functions can be selected:

• Hysteresis function / normally open (Fig. 6-4): [oux] = [Hno]
• Hysteresis function / normally closed (Fig. 6-4): [oux] = [Hnc]

First the set point (SP) is set, then the reset point (rP) with the requested difference.

• Window function / normally open (Fig. 6-5): [oux] = [Fno]
• Window function / normally closed (Fig. 6-5): [oux] = [Fnc]

The width of the window can be set by means of the difference between [FH] and [FL]. [FH] = upper value, [FL] = lower value.

Fig. 6-4

Fig. 6-5

L: level
HY: hysteresis
FE: window

For each switching output a switch-on and switch-off delay of max. 60 s can be set (e.g. for especially long pump cycles); ( → 10.4).

6.4 Probes for different tank heights

The unit can be installed in tanks of different sizes. Probes in different lengths are available. To adapt to the tank height, each probe can be shortened. The minimum probe length is 100 mm, the maximum probe length 2000 mm.

6.5 Defined state in case of a fault

• In case of a fault a state can be defined for each output.
- If a fault is detected or if the signal quality is below a minimum value, the outputs pass into a defined state. For this case the response of the outputs can be set via the parameter [FOUx] ( → 10.4).
- Temporary loss of signal caused e.g. by turbulence or foam build-up can be suppressed by a delay time (parameter [dFo] (→ 10.4)). During the delay time the last measured value is frozen. If the measured signal is received again in sufficient strength within the delay time, the unit continues to work in normal operation. If, however, it is not received again in sufficient strength within the delay time, the outputs pass into the defined state.

In case of heavy foam build-up and turbulence, note the examples of how to create a steady area ( → 7.1.6)

6.6 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 IO-Link master.

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

7 Installation

7.1 Installation location / environment, operation with a single probe

• Vertical installation from the top is preferred.

▶ Observe the notes on tank adjustment ( → 7.1.7).

• ▶ For installation in open tanks: ( → 7.5.3)
• For installation in plastic tanks: ( → 7.5.4)
- When operating the unit in small tanks (probe lengths shorter than 200 mm and less than 300 mm distance to the tank wall), mount the unit off-centre (eccentrically) to prevent possible interference from tank resonances.

7.1.1 Minimum distances for installation in closed metal tanks

Fig. 7-1	Fig. 7-2
	without adjustment
Installation distances with adjustment (→7.1.7)	Installation distances without adjustment
A1: 10 mm*)	A1: 10 mm*)
A2: 20 mm	A2: 40 mm to even tank walls50 mm to uneven tank walls (e.g. supports)
A3: 20 mm to structures in the tank (B)50 mm to other sensors type LR	A3: 50 mm to structures in the tank (B)50 mm to other sensors type LR
D: ∅ 30 mm if installed in a connection piece	D: No connection piece allowed according to Fig. 7-2

*) Alternatively: Fix probe at the tank bottom. Observe notes ( → 7.1.3).

For installation in connection pieces: If a pipe is used to make the connection piece (Fig. 7-3), it must not protrude into the tank. The installation causes interfering reflections which are not suppressed by the tank adjustment.

Fig. 7-3

7.1.2 Installation in pipes (bypass pipe, still pipe)

The internal pipe diameter (d) must at least have the following value:

d	With adjustment(→ 7.1.7)	Without adjustment
Metal pipe	∅ 30 mm	∅ 100 mm with [MEdl] = [HIGH]∅ 200 mm with [MEdl] = [MId] (→ 10.4)
Plastic pipe *)	∅ 200 mm

*) Observe notes ( → 7.5.4).
▶ If possible, mount the unit off-centre (eccentrically).
Depending on the operating conditions (e.g. viscous medium / flow) the use of centring pieces is recommended ( → Accessories).
The pipe must not be shorter than the probe.

7.1.3 Applications with viscous and fast flowing media

▶ If possible, install the unit in a bypass pipe / still pipe ( → 7.1.2) or a coaxial pipe ( → 7.2).
▶ In addition, the following aspects have to be considered:

▶ The probe must not be in contact with the tank wall / structures in the tank. If required, increase the minimum lateral distances.
▶ If possible, fix the probe at the tank bottom so that it is electrically conductive, e.g. using a sleeve (Fig. 7-4 and 7-5) or a drill hole in the tank bottom (Fig. 7-6).
▶ For installation according to Fig. 7-5: Increase parameter [LEnG] by (h) to offset the length increase (h) ( → 10.4).

▶ For installation according to Fig. 7-6: Reduce parameter [LEnG] by (t) to offset the immersion depth (t) ( → 10.4).

Fig. 7-4	Fig. 7-5	Fig. 7-6
	τ	τ

If the probe is fixed at the tank bottom, a low level may already be detected with empty tank.

▶ Adapt switch points if necessary.

▶ Check the correct function (in particular with empty tank).

7.1.4 Heavy soiling

If the medium is highly polluted, there is the risk that a bridge forms between the probe and the tank wall / inner wall of the pipe or structures in the tank.

▶ Increase minimum distances depending on the pollution intensity.

7.1.5 Fill openings

Do not install the unit in the immediate vicinity of a fill opening (Fig. 7-7). If possible, install a fill pipe (A) in the tank (Fig. 7-8). Keep to the indicated installation distances; if necessary, carry out a tank adjustment.

Fig. 7-7	Fig. 7-8

7.1.6 Heavy foam build-up and turbulence

Heavy foam build-up and turbulence may lead to incorrect measurements. To prevent this:

▶ Install the sensor in a steady area.

Examples how to create a steady area:

• Use coaxial probe. ▶ Observe the application area of the coaxial probe ( → 5.2).
  • Installation in metal bypass or metal still pipe (Fig. 7-9).
• Separation of the installation location by metal sheets / perforated sheets (without figure).

Fig. 7-9

d: minimum diameter ( → 7.1.2)

The access (A, B) must be above the max. level. The access (C, D) must be below the min. level.

This ensures that neither foam nor turbulence impact the measurement. In addition soiling (e.g. by solids in the medium) can also be avoided.

With increased foam build-up the setting [MEdI] = [MId] is recommended ( → 10.4).

7.1.7 Notes on tank adjustment

Tank adjustment (parameter [tREF]) reduces the effect of interference and ensures a higher excess gain in difficult application conditions.

Only carry out a tank adjustment with the unit installed and preferably with empty tank.

Two options are available for tank adjustment:

[Emty] = Adjustment of the complete probe (recommended). For this option the tank must be completely empty!

[FLnG] = Adjustment of the upper 50 mm from the lower edge of the process connection. For this option the tank may be partly filled. The level must, however, not be higher than max. 300 mm below the process connection.

a: adjustment distance 50 mm with option [FLnG]

S: connection piece

b: safety distance to the level ( b ≥ 250 mm )

For probe lengths L < 300 mm no tank adjustment is possible.

The parameter [tREF] is then not available. In this case:

▶ Adhere to all indicated installation distances ( → 7.1).

No tank adjustment is necessary if all installation distances are adhered to.

The unit is then ready for operation without tank adjustment.

Only if data storage is required in an IO-Link application:

The tank adjustment is not saved via IO-Link.

After a replacement it must be carried out again.

More information about data storage: ( → 15.1)

7.2 Installation location / environment, operation with a coaxial probe

▶ Observe the application area of the coaxial probe ( → 5.2).
- No minimum distances to the tank wall and structures in the tank (B) are required.
• A tank adjustment is not required.
- Minimum distance to the bottom of the tank: 10 mm; for slurry / sediment build-up:
▶ Increase the distance accordingly.
- The vent hole (A) must not be covered by mounting elements or similar.
- Do not install the unit in the immediate vicinity of a fill opening. No water jets must enter into the holes of the coaxial pipe.

Note in case of foam build-up: The vent of the coaxial pipe (A) must be above the maximum level. The lower edge of the coaxial pipe must be below the minimum level. This stops foam penetrating the coaxial pipe.

7.3 Installation of the probe

The probe is not supplied. It has to be ordered separately ( → 3 ).

7.3.1 Attaching the probe

▶ Screw the probe to the unit and tighten.
▶ Hold the probe at the point of attachment with a second screwdriver to stop it turning (Fig. 7-10).

Recommended tightening torque: 4 Nm.

For ease of installation and removal the probe connection can be rotated without restriction. Even if rotated several times, there is no risk of damage to the unit.

In case of high mechanical stress (strong vibration, moving viscous media) it may be necessary to secure the screw connection, e.g. by a screw retaining compound.

Substances such as screw retaining compounds may migrate into the medium.

▶ Make sure that they are harmless.
When using mechanical means of securing (e.g. tooth lock washer):
▶ Avoid protruding edges. They may cause interference reflection.

7.3.2 Installation of the coaxial pipe

This subchapter is only relevant if the unit is to be operated with a coaxial probe.

The coaxial pipe and the probe must be of the same length. The coaxial pipe can be shortened ( → 7.4.3).

▶ Slide the seal (A) onto the thread of the sensor.
▶ Slide the coaxial pipe (B) onto the probe. Carefully centre it and carefully move the probe through the centring piece (C) - for lengths > 1400 mm through both centring pieces - of the coaxial pipe. Do not damage the centring pieces.

▶ Screw onto the sensor thread and tighten. Recommended tightening torque: 35 Nm..

If used under DNV GL conditions (if approval available for the device) and if a coaxial pipe of 700 mm or longer is used, additional centring pieces must be mounted in this coaxial pipe ( → Accessories).

7.4 Probe length

7.4.1 Shorten the probe

The probe can be shortened to adapt to different tank heights.

Ensure that the probe length is not below the minimum permissible probe length (Lmin) of 100 mm. The unit does not support probe lengths below 100 mm.

For probe lengths < 300 mm no tank adjustment is possible ( → 7.1.7).

▶ Screw the probe to the unit.
▶ Mark the desired length (L) on the probe. The reference point is the lower edge of the process connection (Fig. 7-11).
▶ Remove the probe from the unit.
▶ Shorten the probe at the mark.
▶ Remove all burrs and sharp edges.
▶ Screw the probe to the unit again and tighten it ( → 7.3.1).

L_min=100\ mm

7.4.2 Determine probe length L for single probes

▶ Precisely measure the probe length L. The reference point is the lower edge of the process connection (Fig. 7-11).
▶ Note down L. It is needed for setting the device parameters ( → 10.4).

7.4.3 Shortening of the coaxial pipe

The coaxial pipe and the probe must be of the same length:

▶ Remove fastening bracket and centring piece (A, B) (Fig. 7-12).
▶ Shorten the coaxial pipe to the requested length: L_K = L + 9 mm
▶ After shortening, at least one hole (C) for insertion of the fixing bracket has to be left.
▶ Remove all burrs and sharp edges.
▶ Insert centring piece (A) at the lower end of the pipe (for lengths > 1400 mm use a second centring piece in the middle of the pipe) and attach it using the fixing bracket (B) at the lower hole (C).

Fig. 7-12

L_K= length of the coaxial pipe L = length of the probe from the lower edge of the process connection ( → 7.4.1)

7.4.4 Determine probe length L for coaxial probes

▶ Measure the exact total length LK of the coaxial pipe (Fig. 7-12, on the right).
▶ Deduct 9 mm from the total length of the coaxial pipe: LK - 9 mm = L.
▶ Note down L. It is needed for setting the device parameters ( → 10.4).

7.5 Installation of the unit with single probe

Before installing and removing the unit: Make sure that no pressure is applied to the system and that there is no medium in the tank that could leak. Also always take into account the potential dangers related to extreme machine and medium temperatures.

For installation in closed metal tanks, the tank lid serves as a launching plate R (Fig. 7-13 and 7-15). Observe the notes on the launching plate ( → 11.1).

7.5.1 Installation to G ^3/4 process connection directly in the tank lid

The sealing ring on the sensor is used as process seal.

The upper sealing area on the process connection must be flush with the tapped hole.

▶ Lightly grease the sensor thread with a suitable paste.
▶ Insert the unit into the process connection.
▶ Tighten it using a spanner. Tightening torque: 35 Nm

7.5.2 Installation in the tank lid using a G ^3/4 flange plate

Fig. 7-14	Fig. 7-15

▶ Arrange for a bore hole in the tank lid. Observe diameter (d) to enable sufficient transfer of the measured signal to the probe (Fig. 7-14). The diameter (d) depends on the wall thickness of the tank lid:

Wall thickness [mm]	1...5	5...8	8...11
d [mm]	35	45	55

▶ Install the flange plate with G³/₄ process connection ( → Accessories) with the flat surface showing to the tank and fix it with appropriate screws.

If necessary, a seal (B in Fig. 7-15) can be inserted between flange plate and tank. Some flange plates are supplied with a seal. If this is not the case, use a suitable seal.

▶ Ensure cleanness and evenness of the sealing areas, especially if the tank is under pressure. Tighten the fixing screws sufficiently.
▶ Lightly grease the sensor thread with a suitable paste.
▶ Insert the unit into the process connection. Make sure that the supplied sensor seal (A in Fig. 7-15) is correctly positioned.
▶ Tighten it using a spanner. Tightening torque: 35 Nm.

7.5.3 Installation in open metal tanks

For installation in open metal tanks, use a metal fixture with G ^3/4 process connection to install the unit. It serves as a launching plate (R). Minimum size: 150 x 150 mm for a square fixture, 150 mm diameter for a circular fixture (→ 11.1).
▶ If possible, mount the unit in the middle of the fixture. Adhere to the specified installation distances according to ( → 7.1); if necessary, carry out a tank adjustment.

R: launching plate ( → Accessories)

▶ Lightly grease the sensor thread with a suitable paste.
▶ Insert the unit into the process connection.
▶ Tighten it using a spanner. Tightening torque: 35 Nm

7.5.4 Installation in plastic tanks

R: launching plate ( → Accessories)

To enable sufficient transfer of the measured signal, note in case of installation in plastic tanks or metal tanks with plastic lid:

▶ The plastic lid must be provided with a drill hole with a minimum diameter of 150 mm.
▶ For installation of the unit, a metal flange plate (launching plate, R) with G ^3/4 process connection must be used which sufficiently covers the drill hole.
▶ Ensure a minimum distance (= 100 mm) between the probe and the tank wall. Adhere to the installation instructions according to (→ 7.1.2) to (→ 7.1.6); if necessary, carry out a tank adjustment.

When installed in plastic tanks, there may be deterioration caused by electromagnetic interference from other devices. Possible remedies:

• Attach a large-surface, metal screen at the outside of the tank. Check grounding concept; if necessary, change.
• Eliminate sources of interference or reduce emissions from the source of interference taking electro-technical measures.
  • Installation in a metal pipe in the plastic tank.
• Installation with coaxial probe in the plastic tank. Observe the application area of the coaxial probe ( → 5.2).

▶ Lightly grease the sensor thread with a suitable paste.
▶ Insert the unit into the process connection.
▶ Tighten it using a spanner. Tightening torque: 35 Nm

7.6 Installation of the unit with coaxial probe in the tank

▶ Seal the process connection:

• For pipes with G ^3/4 process connection: slide the supplied seal onto the thread of the coaxial pipe. Lightly grease the thread with a suitable paste.
• For pipes with 3/4 NPT process connection: Apply a suitable sealing material (e.g. PTFE tape) on the thread.

▶ Insert the unit with the coaxial probe into the process connection.
▶ Tighten it using a spanner. Tightening torque: 35 Nm

7.7 Alignment of the sensor housing

After installation, the sensor housing can be aligned. it can be rotated without restriction.

Even if rotated several times there is no risk of damage to the unit.

8 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 according to SELV, PELV.

For marine applications (if approval available for the device), additional surge protection is required.

▶ Disconnect power.
▶ Connect the unit as follows:

Core colours
Pin	Socket	ifm	to DIN 47100
1	BN	brown	white
2	WH	white	brown
3	BU	blue	green
4	BK	black	yellow
5	GY	grey	grey
6	PK	pink	pink
7	VT	violet	blue
				OUT1: switching output 1 / IO-Link
				OUT2... OUT4: switching outputs 2...4
				Colours to ifm
Example circuits
4 x positive switching				4 x negative switching

When operating voltage is applied to the unit for the first time, the basic settings must be entered first ( → 10). Only then is the unit ready for operation.

9 Operating and display elements

This unit version has no operating and display elements.

For parameter setting ( → 10).

For units with display and operating elements → www.ifm.com.

10 Parameter setting

A PC with USB IO-Link master ( → 10.1), a correspondingly programmed memory plug ( → 10.2) or a configured IO-Link environment ( → 10.3) is required to set the parameters.

All parameters except tank adjustment ( → 7.1.7) can be set before installation and set-up of the unit or during operation ( → 10.3).

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

▶ Make sure that there will be no malfunctions / dangerous operation in your plant.

10.1 Parameter setting using PC and USB IO-Link master

▶ Prepare PC, software and master → observe the operating instructions of the respective units / software (→ 6.6).
▶ Connect the unit to the USB IO-Link master ( → Accessories).
▶ Follow the menu of the IO-Link software.
▶ Set the parameters, adjustable parameters ( → 10.4).
▶ Check if the parameter setting was accepted by the unit. If necessary, read sensor again.
▶ Remove USB IO-Link master and put the unit into operation ( → 11).

10.2 Parameter setting via the memory plug

Via a memory plug ( → Accessories), a parameter set can be written/transferred to the unit ( → 6.6).

▶ Load suitable parameter set (e.g. using a PC) to the memory plug → observe the operating instructions of the memory plug.
▶ Make sure that the sensor has the original factory settings.
▶ Connect the memory plug between sensor and socket.

▷ When voltage is supplied, the parameter set is transferred from the memory plug to the sensor.
▶ Remove the memory plug and put the unit into operation ( → 10.4).

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.

The tank adjustment is not saved by the memory plug and it is not transferred. After replacement of the unit it has to be carried out manually.

10.3 Parameter setting during operation

▶ Make sure that the sensor is connected to an IO-Link-capable module (master) ( → 6.6).
▶ Read the sensor using a suitable IO-Link software → observe the operating instructions of the respective software.
▶ Set the parameters, adjustable parameters ( → 10.4).
▶ Check if the parameter setting was accepted by the unit. If necessary, read sensor again.
▶ Check whether the unit operates correctly.

10.4 Adjustable parameters

LEnG *)	Input of the probe length:Setting range: 100... 2000 mm / 4.0...78.8 inch. Determination of the probe length: (→ 7.4.2), (→ 7.4.4). After changing the probe length, a tank adjustment already made is deleted.
MEdI *)	Medium selection:[HIGH] = For water and water-based media. Operating mode is optimised for suppression of deposits on the probe. [MId] = For water-based media and media with a mean dielectric constant value, e.g. oil-in-water emulsions. Operating mode optimised for the detection of media with increased foam build-up. [LOW] = For oils and oil-based media (→ 11.2).
Prob *)	Input of the type of probe. For [MEdl] = [LOW] the option [COAx] must be set (→ 11.2). [rod] = single probe for the detection of water-based media[COAx] = coaxial probe for the detection of oil, oil-based media and water-based media Observe the application area of the coaxial probe (→ 5.2)
tREF	Carry out tank adjustment (button [tREF Emty] or [tREF FInG]):[tREF Emty] = adjustment of the complete probe (recommended)[tREF FLnG] = adjustment of the upper 50 mm from the lower edge of the process connection. Observe the notes on tank adjustment (→ 7.1.7).
ou1...ou4	Output configuration of the switching outputs OUT1... OUT4:[Hno] = hysteresis function/NO[Hnc] = hysteresis function/NC[Fno] = window function/NO[Fnc] = window function/NC[OFF] = output OFF (of high impedance)
SP_FH1...4	Set points 1...4 or upper limits 1...4 for window function:Setting range: 15 (35)... L-30 mm / 0.6 (1.4)... L-1.2 inch Note: The values in brackets apply to the setting [MEdl] = [LOW].
rP_FL1...4	Reset points 1...4 or lower limits 1...4 for window function:Setting range: 10 (30)... L-35 mm / 0.4 (1.2)... L-1.4 inch Note: The values in brackets apply to the setting [MEdl] = [LOW].
dS1...4	Switch-on delay**) for OUT1... OUT4. Setting range 0.0...60.0 s
dr1...4	Switch-off delay**) for OUT1... OUT4. Setting range 0.0...60.0 s
uni	Unit of measurement; mm or inch
FOU1...4	Response of OUT1... OUT4 in case of a fault:[On] = output switches ON in case of a fault[OFF] = output switches OFF in case of a fault Note: The IO-Link process value reacts according to the setting FOU1. In addition the process value is set to "invalid" (→ 11.4).
dFo	Delay time of the outputs for the state defined with [FOU2]. Only effective in case of a fault. Note: The delay time also has effect on the IO-Link process value in case of a fault.
P-n	Output polarity for the switching output: [PnP] = output is positive switching [PnP] = output is negative switching

*) Basic settings

**) Response according to VDMA. According to VDMA the switch-on delay always has an effect on SP, the switch-off delay always on rP irrespective of whether the normally open or normally closed function is used.

11 Operation

11.1 Operation with single probe

The single probe is made up of one individual rod. Operation with a single probe is suited for the detection of aqueous media, in particular of heavily soiled aqueous media.

For correct function with single probe, the unit needs a sufficiently large metal launching surface / launching plate. It is necessary for transferring the microwave pulse to the tank with optimum transmission power.

For installation in closed metal tanks / metal bypass pipes, the tank lid / upper pipe section serves as a launching surface. For installation in open metal tanks, tanks made of plastic or metal tanks with plastic lids a sufficiently large fixing plate, a metal plate or similar must be used ( → 7.5.3) and ( → 7.5.4).

For operation with single probe, minimum distances to tank walls and structures in the tank must be adhered to (→ 7.1) .

11.2 Operation with coaxial probe

The coaxial probe is made up of an inner probe and an outer probe pipe (coaxial pipe). The probe is centred in the coaxial pipe by one or several spacers. In case of operation with a coaxial probe media with a low dielectric constant (e.g. oil and oil-based media) are detected in addition to aqueous media.

In addition, the following applies in case of operation with coaxial probe:

• No launching plate is required.
- No minimum distances to tank walls and objects in the tank need to be observed.
• No tank adjustment is necessary.

Observe the application area of the coaxial probe ( → 5.2).

11.3 Function check

After power-on the device is in the operating mode. It carries out its measurement and evaluation functions and generates output signals according to the set parameters.

▶ Check whether the unit operates correctly.

11.4 Operating and diagnostic messages via IO-Link

IODD and IODD descriptive text as a pdf file at: www.ifm.com

11.5 Output response in different operating states

	OUT1...4
Initialisation	OFF
Normal operation	according to the level and setting [oux] OFF or ON
Fault	OFF for [FOUx] = [OFF]ON for [FOUx] = [On]

12 Technical data and scale drawing

Technical data sheet and scale drawing at www.ifm.com.

13 Maintenance / transport

▶ Keep the process connection free of deposits and foreign bodies.

In case of heavy soiling:

▶ Clean the process connection and the probe at regular intervals.

In case of longer operation separation layers can form in the medium (e.g. oil on water). This applies especially to still pipes or bypasses:

▶ Remove separation layers at regular intervals.

In case of operation with coaxial probe:

▶ Ensure that the vent hole (at the upper end of the coaxial pipe) remains free.
▶ Keep the interior of the coaxial pipe clear of foreign bodies and soiling.

When the medium is changed, it may also be necessary to adapt the unit settings ( → 10.4).

Only if data storage is required in an IO-Link application:

The tank adjustment is not saved via IO-Link. After a replacement it must be carried out again ( → 10).

More information about data storage: ( → 15.1)

▶ It is not possible to repair the unit.
▶ After use dispose of the unit in an environmentally friendly way in accordance with the applicable national regulations.
▶ In case of returns ensure that the unit is free from soiling, especially dangerous and toxic substances.
▶ For transport only use appropriate packaging to avoid damage of the unit.

14 Factory setting

(special units LXxxxx*) are not taken into account)

	Factory setting	User setting
LEnG	100
MEdl	HIGH
Prob	rod
tREF Emy	--
tREF FInG	--
SP_FH1	25 % VMR*)
rP_FL1	5 mm below SP_FH1
SP_FH2	50 % VMR*)
rP_FL2	5 mm below SP_FH2
SP_FH3	75 % VMR*)
rP_FL3	5 mm below SP_FH3
SP_FH4	100 % VMR*)
rP_FL4	5 mm below SP_FH4
ou1...ou3	Hno
ou4	Hnc
dS1...dS4	0.0
dr1...dr4	0.0
uni	mm
FOU1... FOU4	OFF
dFo	0.0
P-n	PnP

*) Settings of the special units LXxxxx → Technical data sheet

** VMR = final value of the measuring range = LEnG value minus 30 (in mm)

When the LEnG value is entered, the unit calculates the basic setting.

15 Notes on parameter setting via IO-Link

On delivery the unit is not operational.

During set-up, valid basic settings have to be sent to the device once even if the default settings correspond to the connected device.

For parameter setting: (→ 10)

Only if data storage is required in an IO-Link application:

The tank adjustment is not saved via IO-Link. After a replacement it must be carried out again ( → 10.4).

After a factory reset (button [Restore Factory Settings]), the device reboots and the factory settings are restored.

15.1 Unit locking / data storage (as from IO-Link V1.1)

The IO-Link master stores all parameters of the connected sensor (except tank adjustment, see above) if configured in the master (data storage). When a sensor is replaced by a sensor of the same type, the parameters of the old sensor are automatically written to the new sensor if configured in the master and if the new sensor has the factory settings.

For safety reasons the parameter download can be refused by the sensor. Factory setting: [Open]

Data storage

- [Open] = unit allows parameter download from the master- [Locked] = unit refuses parameter download from the master

More information at www.ifm.com