Ifm Lr8010 User manual

Operating instructions

Electronic level sensor

LR8010

80290527 / 00 02 / 2020

UK

2

Contents

1 Preliminary note��4

1�1 Symbols used ��4

2 Safety instructions ��4

3 Items supplied��5

4 Functions and features ��6

4�1 Operation with coaxial probe ��6

4�2 Applications ��6

4�2�1 Restriction of the application area ��7

5 Function��8

5�1 Measuring principle ��8

5�2 Features of the unit��8

5�2�1 Easy set-up��8

5�2�2 Display functions ��9

5�2�3 Switching functions��9

5�2�4 Offset for indicating the real level in the tank��10

5�2�5 Probes for different tank heights�� 11

5�2�6 Safe state �� 11

5�2�7 IO-Link function ��12

5�3 Password protection against inadvertent manipulation ��12

6 Installation��12

6�1 Installation location / environment ��12

6�1�1 Coaxial probe ��13

6�2 Probe installation ��13

6�2�1 Attaching the probe��13

6�2�2 Installation of the coaxial pipe ��14

6�3 Shortening of the probe ��15

6�3�1 How to shorten the probe and to determine its length��15

6�3�2 Shortening of the coaxial pipe ��16

6�3�3 Determination of the probe length L if the coaxial probe is mounted��16

6�4 Installation of the unit with coaxial probe in the tank ��17

6�5 Alignment of the sensor housing ��17

7 Electrical connection��18

8 Operating and display elements ��19

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9 Menu��20

9�1 Menu structure��20

9�2 Password protection ��21

10 Parameter setting ��21

10�1 Parameter setting in general ��22

10�2 Basic settings (unit on delivery)��23

10�2�1 Enter probe length ��23

10�2�2 Setting to the medium��24

10�2�3 Configuration of the display ��24

10�3 Offset setting��24

10�4 Define overflow switch point (OP) ��25

10�5 Set the output signals of the outputs OUT1��OUT3 ��25

10�5�1 Setting of the output function��25

10�5�2 Set the switching limits (hysteresis function) ��25

10�5�3 Set the switching limits (window function) ��25

10�5�4 Setting of the switch-off delay��26

10�5�5 Response of the outputs in case of a fault ��26

10�5�6 Setting of the delay time after signal loss ��26

10�5�7 Reset all parameters to factory setting ��26

10�5�8 Enter probe length ��26

10�5�9 Adjustment to the medium to be detected ��27

10�6 Changing the password��27

10�7 Enter password [KEy�C]��27

11 Operation ��28

11�1 Operating indicators ��28

11�2 Read set parameters ��29

11�3 Changing the display unit in the Run mode ��29

11�4 Error indications��30

11�5 Output response in different operating states ��31

12 Technical data and scale drawing��31

13 Setting ranges��31

14 Maintenance ��32

15 Factory setting ��33

4

1 Preliminary note

1.1 Symbols used

►Instruction

> Reaction, result

[…] Designation of keys, buttons or indications

→Cross-reference

Important note

Non-compliance may result in malfunction or interference�

Information

Supplementary note�

CAUTION

Warning of personal injury�

> Slight reversible injuries may result�

2 Safety instructions

• The device described is a subcomponent for integration into a system�

- The system architect is responsible for the safety of the system�

- The system architect undertakes to perform a risk assessment and to create

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 architect

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�

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• 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

product must be carried out by qualified personnel authorised by the machine

operator�

• Protect units and cables against damage�

• The unit complies with the standard EN 61000-6-4� The unit may cause radio

interference in domestic areas� If interference occurs, the user must take

appropriate actions�

• The surface of the unit may get hot if the switching outputs are overloaded�

There is a risk of burns� However, only overload will cause hot surfaces�

3 Items supplied

• Level sensor LR8010 with integrated overflow prevention according to WHG*

• Operating instructions

In addition, the following is necessary for installation and operation:

• 1 probe

• 1 coaxial pipe

• 1 socket

* Building authority approval according to the German Federal Water Act (WHG)�

Only use probes and coaxial pipes from ifm electronic gmbh! The optimum

function is not ensured when using components from other manufacturers�

Available accessories: www�ifm�com

6

4 Functions and features

The unit continuously detects the level of liquids in tanks and generates output

signals according to the parameter settings�4 switching outputs are available:

• 3 freely programmable switching outputs (NC / NO)

• 1 switching output for overflow prevention according to WHG* (NC)

* Building authority approval according to the German Federal Water Act (WHG)�

If the unit is used as overflow prevention with building authority approval

according to the German Federal Water Act (WHG), please observe the

corresponding chapter (= Technical description) of the documentation!

4.1 Operation with coaxial probe

Only operate the device with coaxial probe! Operation with single probe is

not supported by this unit version�

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�

When using a coaxial probe, media with a low dielectric constant

(e�g� oil and oil-based media) are detected in addition to aqueous media�

Furthermore, no lateral minimum distances to tank walls and objects in the

tank are required (→ 6 Installation)�

4.2 Applications

• Water, water-based media

• Oils, oil-based media

• Medium temperature 0…80 °C

• Tank pressures: -0�5��4 bar

Application examples:

• Detection of power steering oil

• Monitoring of brake fluid

• Detection of water-glycol mixtures

• Monitoring of hydraulic oil in a hydraulic power unit

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4.2.1 Restriction of the application area

Incorrect measurements or 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 (→ 6.1)�

> In case of signal loss, the unit displays [E�033] and switches the

outputs to a defined state (→ 5.2.6 Safe state)�

• Only operate the device with coaxial probe! Operation with single probe is not

supported by this unit version�

• Use for fluids only! Make sure that the coaxial probe will not be blocked or

clogged (e�g� with solid particles or media that tend to deposit)�

Maximum viscosity: 500 mPa · s

• If the unit is to be used in acids or alkalis (e�g� in hygienic areas or in

electroplating applications): first check the compatibility of the product materials

with the media to be monitored (→ Technical data sheet).

8

5 Function

5.1 Measuring principle

Fig. 5-1 Fig. 5-2

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� 5-1)� When they hit the medium to be detected they are reflected and guided

back to the sensor (Fig� 5-2)� 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�

By using a coaxial probe, the guided wave runs only along the inside of

the coaxial pipe� This allows installation where space is very restricted

(→ 6 Installation)�

5.2 Features of the unit

5.2.1 Easy set-up

• When operating voltage is applied to the unit for the first time, the probe length

and the medium to be detected must be entered� Then the unit is ready for

operation (→ 10.2)�

• If necessary, parameters for the output signals and optimisation of the

monitoring functions can be set (→ 10.2.3 to → 10.3)�

• All settings can also be carried out before installation of the unit�

• Reset to the factory settings is possible�

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• The unit can be locked electronically (electronic lock) to prevent unintentional

settings (→ 10.1)� In addition, the sensor can be protected by a password as

an option(→ 5.3)�

5.2.2 Display functions

The unit displays the current level, either in cm, inch or in percent of the final

value of the measuring range� Factory setting: cm� The display unit is defined by

programming (→ 10.2.3 Configuration of the display)�In the Run mode, it can be

temporarily switched between length indication (cm / inch) and percentage:

►Briefly press [Set]�

> The selected unit is displayed for 30 s, the corresponding LED is lit� With each

push of the button the display type is changed�

The set unit of measurement and the switching status of the outputs are indicated

by LEDs�

5.2.3 Switching functions

The unit signals via 4 switching outputs OUT1��OUT3 and OUT-OP that a set limit

level has been reached or that the level is below the limit value�

The output OUT-OP (OP = overflow prevention) functions as integrated overflow

prevention� For safety reasons it is fixed to NC (normally closed principle)�

According to the German building authority approval (WHG), its function is

constantly monitored�

Output OUT-OP has a fixed hysteresis of 10 mm�

For outputs OUT1��OUT3, the following switching functions can be selected:

• Hysteresis function / normally open (Fig� 5-3): [OUx] = [Hno]�

• Hysteresis function / normally closed (Fig� 5-3): [OUx] = [Hnc]�

First the set point (SPx) is set, then the reset point (rPx) with the requested

difference�

10

• Window function / normally open (Fig� 5-4): [OUx] = [Fno]�

• Window function / normally closed (Fig� 5-4): [OUx] = [Fnc]�

The width of the window can be set by means of the difference between

FHx and FLx� FHx = upper value, FLx = lower value�

Fig. 5-3 Fig. 5-4























t

L

FH

FL

1

0

1

0

FE

Fno

Fnc

L = level; HY = hysteresis; FE = window

For the switching outputs OUT1��OUT3, a switch-off delay of max� 60 s

can be set (e�g� for especially long pump cycles)�

5.2.4 Offset for indicating the real level in the tank

The zone between tank bottom and lower edge of the probe can be entered as

offset value [OFS]� So display and switch points refer to the actual level�

For [OFS] = [0]: The reference point is the lower edge of the measuring

probe�

The set offset only refers to the display on the unit� It has no effect on the

process value transmitted via IO-Link� The OFS parameter, however, is

correctly transmitted via IO-Link and can therefore be taken into account

(→ 5.2.7)�

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5.2.5 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 10 cm, the maximum probe length is 160 cm�

• Probe and housing can be rotated without restriction� This enables easy

installation and orientation of the head of the unit after installation�

5.2.6 Safe state

• If a fault is detected or if the signal quality is below a minimum value, the

outputs pass into the "safe state"� For this case, the response of the outputs

OUT1��OUT3 can be set via the parameters [FOU1]��[FOU3]

(→ 10.5.5 Response of the outputs in case of a fault)�

The response of the output OUT-OP (overflow prevention) is fixed: it opens

in case of a fault�

• Temporary loss of signal (caused e�g� by turbulence or foam formation) can be

suppressed for OUT1��OUT3 by using a delay time (→ 10.5.6 Setting of the

delay time after signal loss)� 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 the measured signal is not received again in sufficient strength within the

delay time, the outputs pass into the safe state�

Also the timing of the OUT-OP output is fixed:in case of a fault, it opens

without delay�

12

5.2.7 IO-Link function

This unit has an IO-Link communication interface which enables direct access to

process and diagnostic data�

In addition it is possible to set the parameters of the unit while it is in operation�

Operation of the unit via an IO-Link interface requires an IO-Link capable module

(IO-Link master)�

With a PC, suitable IO-Link software and an IO-Link adapter cable, communication

is possible while the system is not in operation�

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�

5.3 Password protection against inadvertent manipulation

As an option, the sensor can be protected by a password against inadvertent

manipulation and unauthorised changes�

Password on delivery: Not activated!

For activation/deactivation (→ 10.5.7)

6 Installation

6.1 Installation location / environment

The unit must be installed from above!

CAUTION

The surface of the unit may get hot if the switching outputs are

overloaded� However, only overload will cause hot surfaces�

> Risk of burns

►Cover housing to prevent unintentional contact�

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6.1.1 Coaxial probe

• No minimum distances to the tank

wall and structures in the tank (B)

are required�

Minimum distance to the bottom

of the tank: 10 mm�

• 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�

A

B

10 mm

6.2 Probe installation

Probe and coaxial pipe are not included in the scope of delivery� They must be

ordered separately�

Available accessories: www�ifm�com

6.2.1 Attaching the probe

Fixing of the probe:

►Screw the probe to the unit and tighten�

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�

6

In case of high mechanical stress (e�g� strong vibration), it may be

necessary to secure the screw connection� For this purpose, the

manufacturer recommends Loctite 270�

14

Substances such as glue or screw retaining compounds might migrate into

the medium� Therefore, make sure that they are harmless!

When using mechanical means of securing, protruding edges must be

avoided� They may cause interference reflection�

6.2.2 Installation of the coaxial pipe

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

pipe can be shortened (→ 6.3.2 Shortening of the coaxial pipe)�

►Screw the probe to the unit and

tighten it�

Recommended tightening torque:

4 Nm�

►Slide the sensor seal (A) onto the

thread�

►Slide the coaxial pipe (B) onto the

probe� Carefully centre it and carefully

move the probe through the centring

piece (C) – for lengths > 140 cm

through both centring pieces – of

the coaxial pipe� Do not damage the

centring pieces�

►Screw onto the sensor thread and

tighten�

A

C

B

32

Secure the screw connection between the coaxial pipe and the sensor! For

this purpose, the manufacturer recommends Loctite 270�

Substances such as glue or screw retaining compounds might migrate into

the medium� Therefore, make sure that they are harmless!

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6.3 Shortening of the probe

The probe can be shortened to adapt to different tank heights� In that case, not

only the probe but also the coaxial pipe needs to be shortened�

6.3.1 How to shorten the probe and to determine its length

Ensure that the probe length is never below the minimum permissible

probe length of 10 cm (Lmin)! The unit does not support probe lengths below

10 cm� If shorter probes are used, measurement errors can occur�

►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�

►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�

Recommended tightening torque: 4 Nm�

►Precisely measure the probe length L, note the

value� It must be entered during parameter setting

of the unit (→ 10.2)�

Lmin

L

Lmin= 10 cm

16

6.3.2 Shortening of the coaxial pipe

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

Fig. 6-1

►Remove fastening bracket and

centring piece (A, B)�

►Shorten the coaxial pipe to the

requested length: LK= 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 and attach it

using the fixing bracket (B) at the

lower hole (C)�

AB

C

LK= length of the coaxial pipe

L = length of the probe from the lower

edge of the process connection

(→ 6.3.1)

6.3.3 Determination of the probe length L if the coaxial probe is mounted

Only relevant if the probe length L (→ 6.3.1) is unknown:

►Measure the exact total length LK of the coaxial pipe (→ Fig. 6-1, on the right).

►Deduct 9 mm from the total length of the coaxial pipe: LK– 9 mm = L�

►Note down L� It must be entered during parameter setting of the unit (→ 10.2)�

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6.4 Installation of the unit with coaxial probe in the tank

There must be a fitting process connection (G¾) in the tank�

►Seal the process connection: slide the supplied seal onto the thread of the

coaxial pipe�

►Screw the unit with the coaxial pipe into the tank and tighten it�

Secure the screw connection between the coaxial pipe and the tank! For

this purpose, the manufacturer recommends Loctite 270�

Substances such as glue or screw retaining compounds might migrate into

the medium� Therefore, make sure that they are harmless!

6.5 Alignment of the sensor housing

After installation, the sensor housing can be aligned:

The sensor housing can be rotated without restriction� Even if rotated

several times there is no risk of damage to the unit�

18

7 Electrical connection

The unit must be connected by a qualified electrician�

Observe the national and international regulations for the installation of

electrical equipment!

Voltage supply according to EN 50178, SELV, PELV�

►Disconnect power�

►Connect the unit as follows:

6

2

1

4

57

3

1

2

4

6

3

5

L+

L

OUT1 / IO-Link

OUT2

OUT-OP

OUT3

Pin / connection Core colours

for ifm sockets for sockets according to

DIN 47100

1 L+ brown white

2 OUT2 (switching output 2) white brown

3 L- blue green

4OUT1 / IO-Link (switching

output 1) black yellow

5 OUT3 (switching output 3) grey grey

6OUT-OP (switching output

for overflow prevention) pink pink

7 not used violet blue

Sockets and 8-pole connectors to 4-pole connectors are available as accessories:

Available accessories: www�ifm�com

When operating voltage is applied to the unit for the first time, the probe

length and the medium to be detected must be entered� Only then is the

unit ready for operation (→ 10.2)�

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8 Operating and display elements

10

9

11

Mode/Enter Set

cm

1

inch

%

2

OUT3

7

OUT-OP

OUT1

OUT2

83 45 6

1 to 8: indicator LEDs

LED 1 green Indication of the level in cm�

LED 2 green Indication of the level in inch�

LED 3 green Indication of the level in % of the final value of the measuring

range�

LED 4 not used

LED 5 yellow

Switching status of the overflow prevention (OUT-OP):

• LED on: no overflow

• LED off: tank is full

LED 6 yellow Output 3 is switched�

LED 7 yellow Output 2 is switched�

LED 8 yellow Output 1 is switched�

9: alphanumeric display, 4 digits

Indication of the current level�

Operation and fault indication�

Indication of the parameters and parameter values�

10: Set button

Setting of the parameter values (scrolling by holding pressed; incrementally by

pressing once)�

Change between cm/inch indication and percent indication in the normal operating mode

(Run mode)�

11: Mode/Enter button

Selection of the parameters and acknowledgement of the parameter values�

20

9 Menu

9.1 Menu structure

1

M

SP1 FH1

S

M

S

5�0 5�0

rP1 FL1

ou3 Hno

OP

CodE

S

M

S

M

4�5 4�5

M

EF S

M

dr2 S

M

S

0�0

dr3 0�0

OFF

FOU1

FOU2 OFF

S

M

FOU3

dFo

S

M

Uni S

M

S

cm

SELd L

OFF

0�0

M

SP2 FH2

S

M

S

10�0 10�0

rP2 FL2

S

M

S

M

9�5 9�5

M

SP3 FH3

S

M

S

15�0 15�0

rP3 FL3

S

M

S

M

14�5 14�5

M

S

S%S

ou1

ou2

30s

M

S----

M

Hno

M

dr1 S

M

0�0

M

S

- - - -

LEnG 24�0

HIGH

MEdI S

M

OFS S

M

0

M

rES S

M

- - - -

cm inch

M

2

KEy�C 1000

S

M

1: Menu level 1

2: Menu level 2

Menu items highlighted in grey, e�g� [ FH1 ], are only active when assigned

parameters have been selected�

IFM LR8010 User manual

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