KROHNE OPTISWITCH 3000 C Manuale utente

Operating Instructions

OPTISWITCH 3000 C

with transistor output

Contents

1About this document

1.1Function ............................. 5

1.2Target group .......................... 5

1.3Symbolism used ....................... 5

2For your safety

2.1Authorised personnel .................... 6

2.2Appropriate use........................ 6

2.3Warning about misuse ................... 6

2.4General safety instructions ................ 6

2.5CE conformity ......................... 6

3Product description

3.1Conﬁguration.......................... 7

3.2Principle of operation .................... 7

3.3Adjustment ........................... 8

3.4Storage and transport ................... 8

4Mounting

4.1General instructions ..................... 10

4.2Mounting information .................... 11

5Connecting to power supply

5.1Preparing the connection ................. 14

5.2Connection procedure ................... 14

5.3Wiring plans,signal chamber housing ........ 16

6Setup

6.1General.............................. 18

6.2Adjustment elements .................... 18

6.3Function chart ......................... 19

7Maintenance and fault rectiﬁcation

7.1Maintenance .......................... 21

7.2Fault rectiﬁcation ....................... 21

7.3Exchanging the electronics................ 22

7.4Instrument repair ....................... 23

8Dismounting

8.1Dismounting steps ...................... 24

8.2Disposal ............................. 24

2OPTISWITCH 3000 C-with transistor output

Contents

30060-EN-060112

9Supplement

9.1Technical data......................... 25

9.2Dimensions ........................... 27

9.3Certiﬁcates ........................... 28

Supplementary operating instructions manuals

Information:

OPTISWITCH 3000 Cis available in diﬀerent versions.

Depending on the selected version,supplementary operating

instructions manuals will also be included in the delivery.The

supplementary operating instructions manuals are listed in

section "Product description".

Operating instructions manuals for accessories and

replacement parts

Tip:

To ensure reliable use and operation of your OPTISWITCH

3000 Cwe oﬀer accessories and replacement parts.The

corresponding operating instructions manuals are:

lOperating instructions manual "Oscillator"

OPTISWITCH 3000 C-with transistor output 3

Contents

30060-EN-060112

1About this document

1.1Function

This operating instructions manual has all the information you

need for quick setup and safe operation.Please read this

manual before you start setup.

1.2Target group

This operating instructions manual is directed to trained

personnel.The contents of this manual should be made

available to these personnel and put into practice by them.

1.3Symbolism used

Information,tip,note

This symbol indicates helpful additional information.

Caution,warning,danger

This symbol informs you of a dangerous situation that could

occur.Ignoring this cautionary note can impair the person and/

or the instrument.

Ex applications

This symbol indicates special instructions for Ex applications.

lList

The dot set in front indicates a list with no implied sequence.

àAction

This arrow indicates a single action.

1Sequence

Numbers set in front indicate successive steps in a procedure.

4OPTISWITCH 3000 C-with transistor output

About this document

30060-EN-060112

2For your safety

2.1Authorised personnel

All operations described in this operating instructions manual

must be carried out only by trained,specialist personnel

authorised by the operator.For safety and warranty reasons,

any internal work on the instruments must be carried out only

by personnel authorised by the manufacturer.

2.2Appropriate use

OPTISWITCH 3000 Cis a sensor for level detection.

Detailed information on the application range of OPTISWITCH

3000 Cis available in chapter "Product description".

2.3Warning about misuse

Inappropriate or incorrect use of the instrument can give rise to

application-speciﬁc hazards,e.g.vessel overﬁll or damage to

system components through incorrect mounting or adjustment.

2.4General safety instructions

OPTISWITCH 3000 Cis a high-tech instrument requiring the

strict observance of standard regulations and guidelines.The

user must take note of the safety instructions in this operating

instructions manual,the country-speciﬁc installation standards

(e.g.the VDE regulations in Germany)as well as all prevailing

safety regulations and accident prevention rules.

2.5CE conformity

OPTISWITCH 3000 Cis in CE conformity with EMC (89/336/

EWG), fulﬁls the NAMUR recommendation NE 21 and is in CE

conformity with NSR (73/23/EWG).

Conformity has been judged acc.to the following standards:

lEMC:

-Emission EN 61326:1997 (class B)

-Susceptibility EN 61326:1997/A1:1998

lLVD:EN 61010-1:2001

OPTISWITCH 3000 C-with transistor output 5

For your safety

30060-EN-060112

3Product description

3.1Conﬁguration

The scope of delivery encompasses:

lOPTISWITCH 3000 Clevel sensor

lDocumentation

-this operating instructions manual

-Supplementary instructions manual "Plug connector for

level sensors"-optional

OPTISWITCH 3000 Cconsists of the following components:

lHousing cover

lHousing with electronics

lprocess ﬁtting with tuning fork

Fig.1:OPTISWITCH 3000 C-with plastic housing

1Housing cover

2Housing with electronics

3Process ﬁtting

3.2Principle of operation

OPTISWITCH 3000 Cis a level sensor with tuning fork for level

detection.

It is designed for industrial use in all areas of process

technology and is preferably used for bulk solids.

Typical applications are overﬁll and dry run protection.Thanks

to its simple and robust measuring system,OPTISWITCH

3000 Cis virtually unaﬀected by the chemical and physical

properties of the solid.

It functions even when exposed to strong external vibration or

changing products.

Scope of delivery

Components

Area of application

6OPTISWITCH 3000 C-with transistor output

Product description

30060-EN-060112

Fault monitoring

The electronics of OPTISWITCH 3000 Ccontinuously mon-

itors the following criteria:

lCorrect vibrating frequency

lLine break to the piezo drive

If one of these faults is detected or in case the power supply

fails,the electronics takes on a deﬁned switching condition,i.e.

the output transistor blocks (safe condition).

The tuning fork is piezoelectrically energised and vibrates at its

mechanical resonance frequency of approx.150 Hz.When the

tuning fork is submerged in the product,the vibration

amplitude changes.This change is detected by the integrated

oscillator and converted into a switching command.

OPTISWITCH 3000 Cis a compact instrument,i.e.it can be

operated without external evaluation system.The integrated

electronics evaluates the level signal and outputs a switching

signal.With this switching signal,a connected device can be

operated directly (e.g.a warning system,aPLC,a pump etc.).

The exact range of the voltage supply is speciﬁed in the

"Technical data"in the "Supplement".

3.3Adjustment

OPTISWITCH 3000 Ccan detect products with a density

>0.08 g/cm³(>0.003 lbs/in³).

On the electronics module you will ﬁnd the following indicating

and adjustment elements:

lsignal lamp for indication of the switching condition (green/

red)

lmode switch for selection of the output current

3.4Storage and transport

Your instrument was protected by packaging during transport.

Its capacity to handle normal loads during transport is assured

by a test acc.to DIN 55439.

The packaging of standard instruments consists of environ-

ment-friendly,recyclable cardboard.In addition,the sensor is

provided with a protective cover of cardboard.For special

versions PE foam or PE foil is also used.Dispose of the

packaging material via specialised recycling companies.

Physical principle

Power supply

Packaging

OPTISWITCH 3000 C-with transistor output 7

Product description

30060-EN-060112

lStorage and transport temperature see "Supplement -

Technical data -Ambient conditions"

lRelative humidity 20 …85 %

Storage and transport tem-

perature

8OPTISWITCH 3000 C-with transistor output

Product description

30060-EN-060112

4Mounting

4.1General instructions

In general,OPTISWITCH 3000 Ccan be mounted in any

position.The instrument must be mounted in such a way that

the vibrating element is at the height of the requested switching

point.

Use the recommended cable (see chapter "Connecting to

power supply")and tighten the cable gland.

You can give your OPTISWITCH 3000 Cadditional protection

against moisture penetration by leading the connection cable

downward in front of the cable entry.Rain and condensation

water can thus drain oﬀ.This applies mainly to mounting

outdoors,in areas where moisture is expected (e.g.by

cleaning processes)or on cooled or heated vessels.

Fig.2:Measures against moisture penetration

Do not hold OPTISWITCH 3000 Con the vibrating element.

The sensor can be damaged by the weight of the instrument.

Remove the protective cover just before mounting.

The process ﬁtting must be sealed if there is gauge or low

pressure in the vessel.Before use,check if the seal material is

resistant against the measured product and the process

temperature.

The vibrating level switch is a measuring instrument and must

be treated accordingly.Bending the vibrating element will

destroy the instrument.

Switching point

Moisture

Transport

Pressure/Vacuum

Handling

OPTISWITCH 3000 C-with transistor output 9

Mounting

30060-EN-060112

Warning:

The housing must not be used to screw the instrument in!

Applying tightening force on the housing can damage its

internal mechanical parts.

To screw in,use the hexagon above the thread.

4.2Mounting information

The vibrating element should protrude into the vessel to avoid

buildup.For that reason,avoid using mounting bosses for

ﬂanges and screwed ﬁttings.This applies particularly to use

with adhesive products.

Install the instrument in such a way that the tuning fork does

not protrude directly into the ﬁlling stream.Should such an

installation location be necessary,mount a suitable baﬄe

above or in front of the tuning fork.

If such an installation location should be necessary,mount a

suitable protective sheet above or in front of the vibrating

element -see illustration a.).

In abrasive solids,mounting acc.to illustration b.has proven.A

spout forms in the concave protective sheet preventing wear of

the protective sheet.

To achieve a very precise switching point,you can install

OPTISWITCH 3000 Chorizontally.However,if the switching

point can have a tolerance of a few centimeters,we

recommend mounting OPTISWITCH 3000 Capprox.20°

inclined to the vessel bottom to avoid buildup.

Socket

Filling opening

Horizontal installation

10 OPTISWITCH 3000 C-with transistor output

Mounting

30060-EN-060112

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