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6 Employer's liability insurance association regulations

6 Employer's liability insurance association regulations

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POLARIS Laser sensor 10 ... 400



3



Goods receipt, transport, storage



3.1



Goods receipt

Make sure that:





The type and serial numbers on the type plates of the

products match the information on the order and delivery papers, (see Annex A: on page 46).







The delivery is complete (compare with the delivery

note).







All parts are in a proper condition and undamaged.



Notice

Notify LAP immediately in writing about any transport

damage and/or missing parts and include your address

and the order number.

Following the incoming goods inspection, store the components in their transport packaging until they are installed. Observe the storage conditions specified in chapter 3.3 on page 17.

During transportation, the products are protected against

moisture by a plastic film. Do not remove the film until the

temperature of the products has adjusted to room temperature. This prevents the condensation of water on or in the

product. When in doubt, wait for 24 hours before unpacking.

Retain the packaging in case it is necessary to transport

the equipment at a later date. Dispose of the packaging if

necessary in accordance with the local regulations.



3.2



Transport

CAUTION

The components contain highly sensitive parts which must

be particularly protected against shock during

transport/shipping.

If you need to ship components, use the original LAP

packaging if possible.

Transport the laser sensors carefully to avoid damage due

to collisions. The laser devices contain sensitive glass

components.



16



© LAP GmbH, MAN-1104 Rev. 2.6-en-GB, 2015-01



POLARIS Laser sensor 10 ... 400



3.3



Storage



3.3.1



Devices

CAUTION

Ensure that the parts are not exposed to water or condensing moisture.

Notice

Please note that in case of non-adherence to the ambient

conditions the warranty will become void.

The storage rooms must be dry, dust-free, and free of aggressive gases (e. g. acid vapours, ammoniac or hydrogen

sulphide). They must be protected against low temperatures (frost-free).

Please note:





Humidity and aggressive gases can cause corrosion.







Electronic components, motors, bearings and seals

may be damaged if subjected to excessive temperature fluctuations.



When putting the equipment into storage, protect open

plug connections from dust and moisture.

The following climatic conditions must be satisfied when

putting the equipment into storage:

Storage conditions

Ambient temperature



0 °C to +80 °C



Humidity



35% to 85% rel. humidity, noncondensing



Tab. 3-1:



Hardware storage conditions



© LAP GmbH, MAN-1104 Rev.2.6-en-GB, 2015-01



17



POLARIS Laser sensor 10 ... 400



3.3.2



Data medium

When storing the data medium, these climatic storage

conditions must be met:

Storage conditions

Ambient temperature



0 °C to +40 °C



Humidity



35% to 85% rel. humidity, noncondensing



Light irradiation



No direct sunlight



Tab. 3-2:



18



Storage conditions data medium



© LAP GmbH, MAN-1104 Rev. 2.6-en-GB, 2015-01



POLARIS Laser sensor 10 ... 400



4



Technical description



4.1



The laser system in use

POLARIS laser sensors are used to measure the distance

or the thickness of standing or moving objects. By using

this measurement system, you can monitor your production completely and document the quality of the product for

the customer with production logs.

The laser sensors are suitable for industrial applications.

They can be used in any production situation to test individual parts in the laboratory and for online production

control. Impacts to the devices and scratches on the protective glass panels could impair the functionality of the

devices and must be avoided.

The laser sensors operate with a max. sampling rate of 4

kHz. Both digital and analog measurements are output.

For diagnostic purposes, a video signal can be evaluated

using the diagnostic and parametrisation tool.

Several lasers can be operated at one RS485 interface.

The laser sensor parameters can also be checked and

modified via this RS485 interface. For this operating

mode, however, each sensor must first be assigned a dedicated address. The diagnostic and parametrisation tool is

used for this purpose.

Some of the accessories offered by LAP:



4.1.1







Laser sensor holder (see chapter 7.1) for installing

and removing the POLARIS laser sensors easily







RS485 / USB converter for connecting the POLARIS

laser sensors to a USB interface







Interface modules (see chapter 14.2) for processing

binary and analog signals as well as for connecting

encoders to the RS485 network.







User software for processing measurements and visualizing several laser sensors.







Complete, customer-specific solutions.



Operating principle

The measuring principle of the POLARIS laser sensors is

based on the laser triangulation principle. A laser beam

generates a point of light on the measured object which is

imaged by a lens on a CCD line mounted to one side of

the laser.



© LAP GmbH, MAN-1104 Rev.2.6-en-GB, 2015-01



19



POLARIS Laser sensor 10 ... 400



Depending on the distance between laser and measured

object, the position of the exposed pixels on the CCD line

changes.

The exposed pixels are evaluated and the dimension of

the relevant object status is determined by processing signals via a digital signal processor (DSP).

The calculated distances are output or queried via the

RS485 bus and the analog output.

In addition, the limit values of the measured values can be

monitored. To this end, two limit value outputs are implemented whose respective limit values can be set in the diagnostic and parametrisation tool under "Filters / Limit

Values".

All objects which are neither very reflective nor transparent

can be measured.



1



Laser



2



CCD line



3



Receiver lens



4



Measuring range



5



Measuring distance



Fig. 4-1:



Measuring principle (diagram)



The computer used for the diagnostic and parametrisation

tool software must have an RS485 interface, e.g. the USBto-RS485 adapter from LAP. For further information

please refer to chapter 14.1 of this operation manual.

Information on the wiring of the laser sensors and the

functions of the display LEDs is presented in chapter

4.2.4.

The POLARIS laser sensors can also be operated via the

digital intermediate transfer module POLARIS CONNECT

or POLARIS HUB module. For notes and information on

this, refer to the corresponding description of functions

and operation.

20



© LAP GmbH, MAN-1104 Rev. 2.6-en-GB, 2015-01



POLARIS Laser sensor 10 ... 400



4.1.2



Thickness measurement using two laser sensors

Thickness measurements are possible using two

POLARIS laser sensors. In this case the user must ensure

that the surface of the measured object never leaves the

measuring range of the corresponding laser sensor on either side of the measured object (see Fig. 4-1: Representation of the measuring ranges).

Each laser sensor must therefore be mounted so that the

end of its measuring range covers the surface of the

measured object at the farthest possible distance.

The measured value 0 corresponds to the point farthest

away. The measured values increase towards the POLARIS.

In the marginal case of an absolutely flat, extremely thin

measured object, the clear width is the sum of the distances of both ends of the measuring range.

The middle of the measuring range and the clear width are

shown in the following diagram for the sake of clarification.



1



Reference surface



2



Measuring distance



3



Start (upper sensor) and end (lower sensor) of measuring range



4



Middle of the measuring range



5



End (upper sensor) and start (lower sensor) of measuring range



6



Clear width for thickness measurement



7



Measured object



Fig. 4-1:



Representation of the measuring ranges



The installation dimensions for the respective model sizes

are listed in the following table.



© LAP GmbH, MAN-1104 Rev.2.6-en-GB, 2015-01



21



POLARIS Laser sensor 10 ... 400



Measuring

Type

range

(mm)



Measuring distance = start of

measuring

range (mm)



Middle of

measuring

range

(mm)



Clear width beEnd of

tween the laser

measuring

sensors for thickrange

ness measurement

(mm)

(mm)



10



10



51



56



61



112



30



30



100



115



130



230



70



70



190



225



260



450



130



130



220



285



350



570



250



250



380



505



630



1010



400



400



440



640



840



1280



Tab. 4-1:



POLARIS installation dimensions



Note regarding thickness measurement: Add the minimum

product thickness to the clear width.

4.1.3



Converting the sensor value to a measured value

The value range of the sensors is 2768 to 62768 and is

independent of the sensor's measuring range. The value

2768 corresponds to the end of the measuring range that

is farthest away from the sensor and the value 62768 corresponds to the end that is closest to the sensor.

The actual measured value in mm is obtained by subtracting 2768 from the sensor value and then multiplying the

difference by the sensor's measuring range and dividing

by the resolution (60000). The following equation can be

used:



Fig. 4-2:



Measured value formula



This yields the settings for the Wetec display converter:





Scale factor = measuring range / 60000







Offset = 2768 x measuring range / 60000



This results in the following for the inverse representation

of the measured value:



Fig. 4-3:



22



Measured value formula (inverse)



© LAP GmbH, MAN-1104 Rev. 2.6-en-GB, 2015-01



POLARIS Laser sensor 10 ... 400



This yields the settings for the Wetec display converter:





Scale factor = -measuring range / 60000







Offset = 62768 x measuring range / 60000



Factors for the standard measuring ranges:

Descending

Measuring

range



4.1.4



Scale

factor



Offset



Ascending

Scale

factor



Offset



2



0.0000333



-0.0923



-0.0000333



2.092



10



0.0001667



-0.4613



-0.0001667



10.461



30



0.0005000



-1.3840



-0.0005000



31.384



70



0.0011667



-3.2293



-0.0011667



73.229



130



0.0021667



-5.9973



-0.0021667



135.997



250



0.0041667



-11.5333



-0.0041667



261.533



400



0.0066667



-18.4533



-0.0066667



418.453



Tab. 4-2:



Scale factors for standard measuring ranges



Fig. 4-4:



Dimensions of the POLARIS laser sensor



Dimensions



© LAP GmbH, MAN-1104 Rev.2.6-en-GB, 2015-01



23



POLARIS Laser sensor 10 ... 400



4.1.5



Technical data

Property



Value



Operating voltage



18 … 30 VDC



Current consumption



Max. 250 mA



Laser power



1 mW (optional 3 … 7 mW)



Laser class



2, 3R or 3B; observe laser warning label



Laser source



Laser diode 670 nm (red)



Life expectancy



more than 30,000 hours of operation

(at T=25 °C)



Measuring frequency



300 Hz ≤ 4 kHz



Data formats



SynchroNet, FastBin, ASCII decimal



Interface



RS485, opto-isolated, up to 960 kBaud



Contacting



Coninvers connector, 9-pin

4 … 20 mA



Analog output

Max. burden 470 Ω

Limit value outputs



≤ 50 mA, common feed Vcc



International Protection

IP65

Rating

Dimensions L x W x H



168 x 109 x 39 mm



Weight



1100 g



Ambient light

(operation)



≤ 3000 Lux



Ambient temperature

(operation)



0 °C to +40 °C



Humidity

(operation)



35% to 85% rel. humidity, non-condensing



Tab. 4-3:



General POLARIS data



Comments regarding measuring frequency: With the default factory settings, the POLARIS DSP controls both the

laser power and, if that is insufficient, the exposure time of

the CCD line in real time to obtain the optimum measurement results. If the application requires, a fixed exposure

time of 250 às is possible.



24



â LAP GmbH, MAN-1104 Rev. 2.6-en-GB, 2015-01



POLARIS Laser sensor 10 ... 400



4.1.6



Model overview

Repeat

accuracy

(over

time)*

[μm]



Model/type



MeasurMeasuring dising range

tance

[mm]

[mm]



POLARIS 10



10



51



0.2



± 0.4



± 1 / 0.01



100 / 280



POLARIS 30



30



100



0.5



± 1.0



± 3 / 0.01



120 / 350



POLARIS 70



70



190



1.0



± 1.5



± 7 / 0.01



140 / 380



POLARIS 130



130



220



2.0



± 3.0



± 13 / 0.01



170 / 420



POLARIS 250



250



380



4.0



± 7.0



± 25 / 0.01



200 / 700



POLARIS 400



400



440



6.0



± 10.0



± 40 / 0.01



250 / 840



Resolution

[μm]



Measuring uncertainty

[μm]*/%**



Min. /Max.

measuring

point width

[μm]



* Derived from DIN 32877, averaging of 64 individual values **In % of

the measuring range

Tab. 4-4:



POLARIS measuring ranges and basic clearances



Comments:





Special measuring ranges are possible on request in

addition to the indicated measuring ranges.







The resolution, repeat accuracy and measuring uncertainty refer to transmission via the RS485 interface.







The repeat accuracy and measuring uncertainty refer

to an ambient temperature of 20°C, measured on a

matt white surface and an integration time of 100ms,

2σ.







Repeat accuracy derived from DIN 32877, averaging

of 64 individual values







The percentage value for the measuring uncertainty

refers to the entire measuring range.







Measuring point width: Dimension of the spot parallel

to the laser sensor cover.



4.2



Outputs



4.2.1



Description of the outputs

An RS485 bus, a limit value output and an analog output

are provided as outputs.



© LAP GmbH, MAN-1104 Rev.2.6-en-GB, 2015-01



25



POLARIS Laser sensor 10 ... 400



Circuit diagram of the limit value outputs:

Two outputs form a supply group with the same external

supply potential.



Fig. 4-5:



4.2.2



Output group



Data output format

The LAP SynchroNet protocol is used by default for the

communication between the POLARIS laser sensors.

This protocol was developed for the communication of

LAP laser sensors of the POLARIS series via the RS485

interface and is especially designed for a high data transmission rate with little protocol overhead and greatest

possible flexibility and system openness for future developments.

To achieve the lowest possible redundancy during transmission, the data are transmitted in binary format. For the

clear differentiation of data and addresses the address

bytes receive a parity bit set to on and the data a parity bit

set to off.

Each POLARIS laser sensor represents an individual subscriber in the RS485 network. Each laser sensor is assigned a dedicated address and a subsequent subscriber.

The sending of a network address is simultaneously the

token transfer to the addressed device.

The following output value is reserved for diagnostics in

the SynchroNet format:

FFFFHex



26



"No object in measuring range"



© LAP GmbH, MAN-1104 Rev. 2.6-en-GB, 2015-01



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