IFM SB4 Series Manuale utente

Operating instructions

Mechatronic flow sensor

SBx4xx

11368300 / 0005 / 2021

SBx4xx Mechatronic flow sensor

Contents

1 Preliminary note.............................................................. 3

1.1 Symbols used........................................................... 3

1.2 Warnings used.......................................................... 3

2 Safety instructions............................................................ 4

3 Intended use ................................................................ 5

4 Function.................................................................... 6

4.1 Analogue output......................................................... 6

5 Mounting ................................................................... 7

5.1 Process connection ...................................................... 7

5.2 Interference ............................................................ 7

5.3 Mounting accessories..................................................... 8

5.4 Installation in case of water containing dirt. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

6 Electrical connection .......................................................... 9

7 Troubleshooting.............................................................. 10

8 Maintenance, repair and disposal ................................................ 11

8.1 Clean the device......................................................... 11

Mechatronic flow sensor SBx4xx

1 Preliminary note

You will find instructions, technical data, approvals and further information using the QR code on the

unit / packaging or at www.ifm.com.

1.1 Symbols used

Requirement

Instructions

Reaction, result

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

Cross-reference

Important note

Non-compliance may result in malfunction or interference.

Information

Supplementary note

1.2 Warnings used

ATTENTION

Warning of damage to property

CAUTION

Warning of personal injury

wSlight reversible injuries may result.

SBx4xx Mechatronic flow sensor

2 Safety instructions

• The unit 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 (Ò Intended use).

• Only use the product for permissible media.

• 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 product must be

carried out by qualified personnel authorised by the machine operator.

• Protect units and cables against damage.

Mechatronic flow sensor SBx4xx

3 Intended use

The unit monitors liquid media (water, glycol solutions, industrial oils, coolants).

It detects the volume flow (flow rate/time) and outputs an analogue signal that is proportional to the

process value.

ATTENTION

Frost formation of the medium.

wThe sensor may be damaged.

uEnsure that the medium in the sensor does not freeze during operation and transport.

SBx4xx Mechatronic flow sensor

4 Function

The unit detects the flow according to the principle of differential pressure by means of a permanent

magnet and a measuring cell.

4.1 Analogue output

I [mA]

MEW Q [l/min]0

Fig.1: Analogue output (water 20

°C)

The analogue signal for water is linear from 4 mA (= no flow) to 20 mA

(= final value of the measuring range, VMR).

If the measured value is above the final value of the measuring range, a

current signal of > 20 mA is output.

Mechatronic flow sensor SBx4xx

5 Mounting

CAUTION

During installation or in case of a fault (e.g. housing damage) media under high pressure or

hot media can leak from the system.

wRisk of injury caused by pressure or burns.

uEnsure that the system is free of pressure during installation.

uEnsure that no media can leak at the mounting location during installation.

uEquip the unit with suitable protection (e.g. cover) to avoid hazard to personnel from

leaking media.

5.1 Process connection

uAvoid major changes of cross section on the inlet side.

uFit the unit in the pipe in accordance with the flow direction (arrow) and tighten at the spanner flats.

Do not clamp the housing in a vice.

IN OUT

Fig.2: Process connection

IN: Inlet

OUT: Outlet

Loosening the socket head screw (1) and moving the cap do not change the setting of the

sensor. However, moving the cap may be useful to read the label.

Calming sections on the sensor's inlet or outlet side are not necessary.

The sensor can also prevent backflow.

5.2 Interference

uThe following minimum distances must be adhered to:

Distance between the sensor and ferromagnetic materials ≥30mm*

Distance between the sensor and constant / alternating fields ≥500mm

Distance between the sensor axes for side-by-side installation ≥50mm

* The pipe may consist of ferromagnetic material.

SBx4xx Mechatronic flow sensor

5.3 Mounting accessories

uIf necessary, fasten the unit on the mounting plate (not supplied) from underneath.

Fig.3: Installation with mounting plate

1: Threaded hole M8 (depth 6 mm) on the bottom side of the unit

Information about available accessories at www.ifm.com

5.4 Installation in case of water containing dirt

uUse a 200-micron filter in front of the inlet (IN).

uInstall sensor horizontally.

uAdhere to the inclination angle to the horizontal axis:

± 90°

± 5°

Fig.4: Alignment in case of water containing dirt

In clean medium, installation in vertical pipes is also possible.

Information about available filters at www.ifm.com.

Mechatronic flow sensor SBx4xx

6 Electrical connection

The device 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.

uDisconnect power.

uConnect the unit as follows:

2 1

L+

1 BN

2 WH

3 BU

Fig.5: Wiring diagram (colours in accordance with DIN EN60947-5-2)

BN: Brown WH: White

BU: Blue

Information about available sockets / plugs at www.ifm.com.

SBx4xx Mechatronic flow sensor

7 Troubleshooting

If there are dirt particles between the float and the housing the display value of the sensor does not

return to zero in case of flow standstill. In case of contamination the display value can be up to 30 % of

the final value of the measuring range.

uClean the device.

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