MICRO-EPSILON CapaNCDT 6630 Bedienungsanleitung

MI CRO- EPSI LON

SENSORS & SYSTEMS

capaNCDT 6630

Betriebsanleitung

Instruction manual

MICRO-EPSILON

MESSTECHNIK

GmbH & Co. KG

Königbacher Strasse 15

D-94496 Ortenburg

Tel. +49/85 42/1 68-0

Fax +49/85 42/1 68-90

e-mail [email protected]

www.micro-epsilon.de

DIN EN ISO 9001: 2000

Zertificated acc. to

Zertifiziert nach

Berührungsloses kapazitives Wegmesssystem

Non-Contact Capacitive Displacement Measurement

X9751122-A010014MSC

English

MICRO-EPSILON

Contents

1. Safety ........................................................................................................... 23

1.1 Symbols Used.................................................................................................................23

1.2 Warnings ......................................................................................................................... 23

1.3 Notes on CE-Identification .............................................................................................. 24

1.4 Proper Use ...................................................................................................................... 25

1.5 Proper Environment ........................................................................................................ 25

2. Functional Principle, Technical Data.......................................................... 26

2.1 Measuring Principle ......................................................................................................... 26

2.2 Structure.......................................................................................................................... 27

2.2.1 Controller ........................................................................................................................ 27

2.2.2 Sensors ........................................................................................................................... 28

2.3 Technical Data ................................................................................................................. 28

3. Delivery ....................................................................................................... 30

3.1 Unpacking....................................................................................................................... 30

3.2 Storage ........................................................................................................................... 30

4. Installation and Assembly .......................................................................... 31

4.1 Precautionary Measures .................................................................................................. 31

4.2 Sensor ............................................................................................................................. 31

4.3 Electronics, Ground Connection, Earthing ..................................................................... 33

4.4 Signal Output .................................................................................................................. 33

X9751122-A010014MSC

MICRO-EPSILON

5. Operation..................................................................................................... 33

5.1 Starting Up ...................................................................................................................... 33

5.2 Zero Point and Gain........................................................................................................ 33

6. Operation and Maintenance ....................................................................... 34

7. Warranty ...................................................................................................... 35

8. Appendix...................................................................................................... 36

8.1 Accessories and Spare Parts .......................................................................................... 36

8.2 Sensor Dimensions ......................................................................................................... 36

8.3 PIN-Assignment ............................................................................................................... 37

X9751122-A010014MSC Page 23

English

MICRO-EPSILON

Safety

1. Safety

1.1 Symbols Used

Knowledge of the operating instructions is a prerequisite for equipment operation. The following symbols are

used in this instruction manual:

DANGER! - imminent danger

WARNING! - potentially dangerous situation

IMPORTANT! - useful tips and information

1.2 Warnings

 Disconnect the power supply before touching the sensor surface

ðStatic discharge - danger of injury

ðDanger of injury

 The power supply and the display/output device must be connected in accordance with the safety

regulations for electrical equipment

ðDanger of injury

ðDamage to or destruction of the sensor and/or controller

 Avoid banging and knocking the sensor and controller

ðDamage to or destruction of the sensor and/or controller

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MICRO-EPSILON

Safety

 The power supply may not exceed the specified limits

ðDamage to or destruction of the sensor and/or controller

ðDanger of injury

 Protect the sensor cable against damage

ðDestruction of the sensor

ðFailure of the measuring device

1.3 Notes on CE-Identification

The following applies to the capaNCDT series 6630: EC regulation 89/336/EEC

Products which carry the CE mark satisfy the requirements of the EC regulation EC 89/336/EEC

Electromagnetic Compatibility and the European standards (EN) listed therein. The EC declaration of

conformity is kept available according to EC regulation, article 10 by the authorities responsible at

MICRO-EPSILON MESSTECHNIK

GmbH & Co. KG

Koenigbacher Straße 15

D-94496 Ortenburg

Germany

The system is designed for use in industry and satisfy the requirements of the standards

 EN 50 081-1 RFI emission

 EN 61 000-6-2 Immunity to interference

The systems satisfy the requirements if they comply with the regulations described in the instruction manual

for installation and operation.

X9751122-A010014MSC Page 25

English

MICRO-EPSILON

Functional Principle, Technical Data

1.4 Proper Use

The capaNCDT series 6630 measuring system is designed for use in industrial areas.

It is used for

- displacement, distance, thickness and movement measurement

- position measuring of parts or machine components

The systems may only be operated within the limits specified in the technical data (see chap. 2.3).

The system should only be used in such a way that in case of malfunction or failure personnel or machinery

are not endanged.

Additional precautions for safety and damage prevention must be taken for safety-related applications.

1.5 Proper Environment

 Protection class for sensor, cable

and preamplifier: IP 54

 Operating temperature sensor: -50 to +150 °C (-58 to +302 °F)

controller: +10 to +40 °C (+50 to +104 °F)

 Storage temperature: -10 to +75 °C (+14 to 167 °F)

 Humidity: 5 - 95% (non condensing)

 Ambient pressure: atmospheric pressure

 The space gap between the sensor face and the target must have an unvarying dielectric constant

 The space gap between the sensor face and the target may not be contaminated (e.g. water, rubbed-off

parts, dust, etc.)

 Vibration According to IEC 68-2-6

 Mechanical shock According to IEC 68-2-27

 EMC: Acc. to EN 50 081-1 RFI emission

EN 61 000-6-2 Immunity to interference

Page 26 X9751122-A010014MSC

MICRO-EPSILON

Functional Principle, Technical Data

2. Functional Principle, Technical Data

2.1 Measuring Principle

The principle of capacitive distance measurement with the capaNCDT system is based on the parallel plate

capacitor. If a constant AC current Icflows through the sensor capacitor, the amplitude of the AC voltage Ucat

the sensor is proportional to the distance dbetween the capacitor electrodes.

The two plate electrodes are formed by the

sensor and the target opposite. The

measured AC voltage is compared with a

compensating voltage, rectified, amplified

and output as an analog voltage.

The sensor design with guard ring electrodes

guarantees that the ideally necessary

homogenous electrical field is realized for all

practical purposes.

The linear characteristic of the measuring

signal is achieved without extra electronic

linearization efforts when measuring on

targets made of electrically conductive

materials (metals). Small changes in the

conductivity or magnetic properties do not

affect the sensitivity or linearity.

ground

screening electrode (guardring)

measuring electrode

target: electrical conductor

Fig. 2.1: Functional principle of the guardring capacitor

eoer

C = A

Xc = =

wCUc = >> Uc d

weoerA

IMPORTANT!

A small target and

bent (uneven)

surfaces cause a

nonlinear

characteristic.

X9751122-A010014MSC Page 27

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MICRO-EPSILON

Functional Principle, Technical Data

2.2 Structure

The capaNCDT 6630 is a multi-channel non-contact displacement measuring system for 19 " rack mounting.

All functions such as display and demodulator are pluggable. One measuring channel consists of a sensor

with connecting cable and the controller which comprise the oscillator and demodulator modules. The

electronic modules are Euro size cards and are designed for use in an Eurocard cabinet. The measuring

system has already been calibrated for metal targets.

2.2.1 Controller

The oscillator a part of the controller supplies the sensor with a frequency and amplitude-stable sinusoidal

voltage. The frequency is 31.25 kHz. The oscillator has no

controls and potentiometers.

Demodulation, linearization and amplification of the

distance-dependent measuring signal are the tasks of the

demodulator module. The trimmers (see fig. 2.2)

 Gain

 Zero

are used for setting gain and zero point of the complete

measuring channel (see chap. 5.2).

The analog demodulator output voltage (channel output)

can be set within the range from -10 to +10 Volts at a

maximum output current of 10 mA. The output is short-circuit

proof. The output impedance is less than 10 Ohms.

Zero Gain

Fig. 2.2: DT 6630 with potentiometers

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Functional Principle, Technical Data

2.2.2 Sensors

The sensors are connected to the controller with a 1.6 m (5 ft) long triaxial cable. In order to obtain accurate

measuring results, the surface of the sensor must be kept clean and free from damage.

The capacitive measuring process is area-related. A minimum area is required depending on the sensor

model and measuring range.

ledomrosneSegnargnirusaeMtegratehtforetemaid.niM

mmsehcnimmsehcni

)20(1-106S3.2.pahcees0104.

2.3 Technical Data

DT 6630-S600-1(02)-C1,6 DT 6630(01)-S600-1(02)-C1,6 DT 6630(15)-S600-1(02)-C1,6

200 µm 400 µm 100 µm

50 µm 100 µm 70 µm

calibrated 1±0.1 µm ±0.4 µm ±0.05 µm

uncalibrated 2±0.4 µm ±1.6 µm ±0.2 µm

static30.1 nm 0.2 nm 0.1 nm

dynamic (1 kHz) 10 nm 20 nm 5 nm (4 kHz)

Repeatability static 0.0004 µm 0.0015 µm 0.0004 µm

Model

Measuring range

SMR

Linearity

Resolution

SMR = Start of

measuring range

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