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Baumer

Functions

|

8

V2 | OM20/OM30 IO-Link

Operating Manual

33

8.8

Hysteresis

The

Hysteresis

prevents unwanted switching of the switching output. The parameterized value

of the hysteresis is the difference in distance between the points at which the switching output is
activated and deactivated. Baumer recommends always setting the hysteresis not equal to 0.

Positive hysteresis

SP1

SP2

SP1

Point mode

Window mode

1

0

0

1

Ill. 14:

Positive hysteresis

n

Switching output in point mode: A positive hysteresis value corresponds to a right aligned
hysteresis.

n

Switching output in window mode: A positive hysteresis value corresponds to a hysteresis
aligned outside of the window.

n

Example:
▪ Measuring mode of the switching output: point mode
▪ Switching point (SP1): 200 mm
▪ Hysteresis: 1.5 mm
▪ This results in a right aligned hysteresis. If the measured distance is less than 200 mm,

the switching output is active. If the object to be measured moves from 200 mm to
201 mm, the switching output remains active due to the hysteresis. As soon as the mea-
sured distance is greater than 201.5 mm, the switching output is deactivated (switching
output switches to

low

). If the object to be measured moves from 202 mm to 201 mm, the

switching output remains deactivated. The switching output only changes its state at
200 mm (parameterized switching point).

Negative hysteresis

SP1

SP2

SP1

Point mode

Window mode

0

1

0

1

Ill. 15:

Negative hysteresis

n

Switching output in point mode: A negative hysteresis value corresponds to a left aligned
hysteresis.

n

Switching output in window mode: A negative hysteresis value corresponds to a hysteresis
aligned within the window.

n

Example:
▪ Measuring mode of the switching output: window mode
▪ Switching point 1 (SP1): 200 mm
▪ Switching point 2 (SP2): 300 mm
▪ Hysteresis: -1.5 mm

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Содержание OM20

Страница 1: ...V2 7 20 2021 EN US Operating Manual OM20 OM30 IO Link Laser distance sensor ...

Страница 2: ...Measurement field 10 3 4 Operating and display elements 11 3 4 1 Sensor LEDs 11 3 4 2 Teach button 11 3 5 Analog measurement performance 13 3 5 1 Interpretation of the characteristic curves 13 3 6 IO Link 14 3 7 Dimensional drawing 17 4 Transport and storage 18 4 1 Transport 18 4 2 Delivery inspection 18 4 3 Storage 18 5 Installation instructions 19 6 Electrical installation 22 6 1 Pin assignment ...

Страница 3: ...ut 35 8 10 Analog measurement field 36 8 11 Function of the Teach button 38 9 Diagnostic data 39 9 1 Measurement rate 39 9 2 Response delay 40 9 3 Exposure reserve 40 9 4 Signal quality 41 9 5 Device status 41 9 6 Operating time 41 9 7 Histogram function 42 10 Maintenance 45 10 1 Cleaning the sensor 45 11 Troubleshooting 46 11 1 Return and repair 46 11 2 Accessories 46 12 Annex 47 12 1 Analog outp...

Страница 4: ...fety instructions and handling instructions given in this manual In addition the local occupational health and safety regulations and general safety regulations apply The illustrations in this manual are examples only Deviations are at the discretion of Baumer at all times 1 2 Warnings in this manual Warnings draw attention to injury or material damage The warnings in this manual indicate dif fere...

Страница 5: ...f the art and our many years of knowledge and experi ence The manufacturer accepts no liability for damage due to the following reasons n Non observance of the manual n Improper use n Use of unqualified personnel n Unauthorized conversions The obligations agreed in the delivery contract the general terms and conditions and the deliv ery conditions of the manufacturer and its suppliers as well as t...

Страница 6: ...ition you can find the following information among other things in digital format at www baumer com n Operating manual n Data sheet n 3D CAD drawing n Quickstart n Dimensional drawing n Connection diagram pin assignment n IODD file n Certificates EU conformity declaration etc ...

Страница 7: ...oduct is a precision device designed for the detection of objects the acquisition of physi cal measuring units and for the evaluation of measured values for output in the form of electrical signals for the higher level system Unless not especially labelled the product must not be used in potentially explosive atmos pheres Set up Installation mounting and adjustment of this product may only be exec...

Страница 8: ...the following type codes are specified according to laser class 1 OM20 xxxxx HH xxx OM30 xxxxx HH xxx LASER RADIATION DO NOT STARE INTO BEAM Wavelength 640 670nm IEC 60825 1 Ed 3 2014 CLASS 2 LASER PRODUCT Complies with 21 CFR 1040 10 and 1040 11 except for conformance with IEC 60825 1 Ed 3 as described in Laser Notice No 56 dated May 8 2019 Products with the following type codes are specified acc...

Страница 9: ...angula tion principle For this purpose the sensor projects a laser point on the object to be measured This laser point is mapped on the receiver element by the receiving optics The distance to the object to be measured is calculated from the location of the image on the receiver element The measured distance is provided as a measured value via the following channels integrated in the sensor n Digi...

Страница 10: ...ted objects objects not to be measured in this region may lead to deviations in the measurement results n The limits of the measurement range MR are defined via the parameters Start of the mea surement range Sdc and End of the measurement range Sde Zero position ZP n In the factory settings the zero point is located on the front of the sensor ZP 0 mm The output consists of the distance between the...

Страница 11: ...in the timeout can be parameterized via IO Link When the teach button is pressed for longer than 12 seconds the sensor enters oper ating mode without performing a parameterization Parameterization via the Teach button is done according to the procedure described in the fol lowing Teaching the analog measurement field Instruction a Press the teach button briefly ü Green and yellow LEDs light up tea...

Страница 12: ... up briefly Afterwards the sensor goes back to operating mode ü Teach in not OK Green and yellow LEDs blink simultaneously with 8 Hz After the zero point is shifted n the digital measured values before the zero point in the direction of the sensor are output as negative and those after the zero point are output as positive measured values n the limits of the analog measurement field have shifted T...

Страница 13: ...ut limits the repeatability of the analog measure ment results especially at close range a To achieve the highest possible precision measure in the close range of the sensor and limit the analog measuring field to as small an area as possible Also see about this 2 Analog measurement field 36 2 Teach button 11 3 5 1 Interpretation of the characteristic curves The diagrams in the appendix of this do...

Страница 14: ...ce 3 Analog measuring field 10 mm If the analog measuring field is limited to 10 mm the resolution of the analog output limits the repeatability of the sensor to 3 µm The light blue characteristic curve shows the limita tion of the performance 4 Analog measuring field 3 mm If the analog measuring field is restricted to 3 mm measuring range the resolution of the analog output over the entire measur...

Страница 15: ...or calculating the measure ment value Measurement value MDC I 10Scale Unit n Example Measurement value MDC 1000 Scale 6 Unit m Therefore 1000 10 6 m 1000 µm 7 3 Output Boolean n Status of the alarm output Bit 3 0 Alarm is inactive Sensor is functioning as required Bit 3 1 Alarm is active The sen sor must be checked No measured value can be recorded 8 2 Quality Bit Boolean n Status of the signal qu...

Страница 16: ...t n Hysteresis n Zero position n Limits of the measurement range n Limits of the analog measurement field n Output LED alarm switching output n Configuration of the Teach button Diagnostic data The diagnostic data is used for monitoring the status of the device The following diagnostic data is available for the sensor n Measurement rate n Reply delay n Exposure reserve n Signal quality n Device st...

Страница 17: ...O Link Operating Manual 17 3 7 Dimensional drawing 13 34 5 37 M8 x 1 2 9 11 2 19 31 6 LED Teach in 26 3 2 3 2 2 2 7 7 Ill 4 Dimensional drawing OM20 13 6 49 4 2 3 9 41 M8 x 1 6 4 29 40 3 Teach in LED 2 9 7 Ill 5 Dimensional drawing OM30 ...

Страница 18: ...ect as soon as it is detected Damages can only be claimed within the applicable claims deadlines In case of externally visible transport damage proceed as follows Instruction a Do not accept the delivery or only with reservations b Note the scope of the damage on the transport documents or the delivery slip of the carrier c Initiate the claim 4 3 Storage Store the product at the following conditio...

Страница 19: ...6 to 10 to the side so that the light directly reflected by the surface does not hit the receiver of the sensor n For mounting use at least 1 tooth lock washer to break open the paint layer of the sensor OM20 OM30 Screws 2 M3 2 M4 Torque 0 6 Nm 10 1 Nm 10 ü û Mounting the sensor near a wall or a machine component Mount the sensor parallel to the wall to prevent disruptive reflections ü û Measureme...

Страница 20: ... Align the sensor parallel to the colored edge to prevent measurement errors ü û Mounting near strong ambient light Prevent the ambient light from entering the detection range of the receiver ü û Mounting several sensors close to each other Prevent the detection ranges of the receivers from overlapping Only the sensor s own laser spot may be in the detection range of the receiver ...

Страница 21: ...Baumer Installation instructions 5 V2 OM20 OM30 IO Link Operating Manual 21 ü û Mounting for round measurement objects Align the sensor on the same axis as the measurement object to prevent reflections ...

Страница 22: ...ch in 1 2 4 3 1 Vs 2 analog 3 0 V 4 output IO Link 6 2 Connection diagram Vs BU 3 BN 1 BK 4 0 V Z output IO Link WH 2 Analog Push Pull analog Z Z 1 BN Brown 2 WH White 3 BU Blue 4 BK Black 6 3 Connecting the sensor to electricity Instruction a Ensure that the system is disconnected from power b Connect the sensor according to the pin assignment ...

Страница 23: ...indow Hysteresis depending on MR Input Output Settings OUT1 Mode Output LED function SSC1 Alarm Analog Output Output Type 4 20 mA 0 10 VDC Output Characteristic Not inverted Distance AnalogMin Sdc Distance AnalogMax Sde Local User Interface Local Teach Mode XPert Button Time Out 5 min Device Access Locks Data Storage Lock False I Type OM20 P0026 xx xxx SSC1 Param SP 1 2 mm II Type OM20 P0026 xx xx...

Страница 24: ...ision filter calculates the results in the form of floating values The old est measured value is removed as soon as a new measurement is added Therefore the mea suring frequency is not affected by the precision filter In the factory settings the filter is set to Highest In general the more measured values per fil ter the better the repeatability and the higher the reproducibility of the results Mo...

Страница 25: ...ge and Moving Median The higher the number of measured values per filter the longer the response time of the sen sor This means that a change in distance only becomes fully visible for the output after a delay Option 1 Select the required filter length from predefined filter lengths The following selection options are available Value Number of measured values Moving Median Moving Average Standard ...

Страница 26: ... You can specify the length of the Moving Av erage and Moving Median filters after selecting the Custom filter n Moving Median filter 1 21 values n Moving Average filter 1 256 values IO Link parameter Filter operating mode Parameter name Values Description Operation Mode Precision Filter Standard High Very High High est Custom n Selection among predefined filters number of measured values per filt...

Страница 27: ...taneously n Purpose application The Free Running trigger mode can be used in most applications fac tory setting The fastest possible recording of measurement results ensures a larger amount of data Interval trigger mode n The sensor measures with a constant time interval adjustable in µs n Observe the maximum possible measurement frequency in the Interval mode as well If the maximum possible measu...

Страница 28: ... Zero Position Zero Position n Zero position Baumer commands Zero Position Teach n Teach in the current position as the new zero position 8 4 Measurement range With the Measurement range function the limits of the measurement range can be set so that the active measurement range is limited to a partial range of the maximum measurement range of the sensor The purpose of this function is to eliminat...

Страница 29: ... invalid measured value should be suppressed The time period is used to mask invalid measured values at the outputs The output digital or analog output is set only after expiration of the time period Invalid Value Handling example 1 n Parameters Type of Invalid Value Handling min output point Time period Hold Time 1000 ms n Interpretation Invalid measured values are ignored at both the digital and...

Страница 30: ...Invalid Value Handling example 2 IO Link parameter Invalid Value Handling Parameter name Values Description AnalogSetting Value after Dropout Last valid near far n Type of Invalid Value Handling Last valid Last valid measured value near min output point far max output point Process Value Disruption Filter Hold Time n Time period during which an invalid mea sured value is suppressed ...

Страница 31: ... the minimum maximum height of a measurement object Reach a desired position with a tool that edits an object Window mode SP1 SP2 SP1 SP2 0 1 Ill 11 Sensor in the window mode measurement mode n The smallest switching window is 2 mm n Purpose application example Quality control Check the dimensions of a measurement object within a tolerance win dow IO Link parameter Switching points Parameter name ...

Страница 32: ...n as the defined distance SP1 is not reached n Window mode The switching output is activated as soon as the measured value is within the window of SP1 and SP2 Active Low SP1 SP2 SP1 Point mode Window mode 0 1 0 1 Ill 13 Polarity Active Low n Point mode The switching output is activated as soon as the defined distance SP1 is ex ceeded n Window mode The switching output is activated as soon as the m...

Страница 33: ...sults in a right aligned hysteresis If the measured distance is less than 200 mm the switching output is active If the object to be measured moves from 200 mm to 201 mm the switching output remains active due to the hysteresis As soon as the mea sured distance is greater than 201 5 mm the switching output is deactivated switching output switches to low If the object to be measured moves from 202 m...

Страница 34: ...red nears the switching points from the inside of the window the switching output remains active until 200 mm and 300 mm parameterized switching points Point mode switching output behavior Positive hysteresis High Low Level Hysteresis Switching point P1 Active low level Ill 16 Behavior of the switching output in point mode positive hysteresis Negative hysteresis High Low Level Hysteresis Switching...

Страница 35: ...eresis Window Ill 19 Behavior of the switching output in window mode negative hysteresis IO Link parameter Hysteresis Parameter name Values Description Hysteresis SSC1 Width Enter the hysteresis as a positive or negative nu merical value in mm 8 9 Function of the output The IO Link communication principle can also be used as a switching output In the factory set tings the function of the output is...

Страница 36: ...t of the analog measurement range factory setting Sde Sdc Sde ZP Analog measurement field P1 P2 Ill 20 Analog measurement field factory setting Sdc Start of the measurement range Sde End of the measurement range P1 Min limit of the analog measurement range P2 Max limit of the analog measurement range ZP Zero position You have the option of inverting the characteristic curve of the analog measureme...

Страница 37: ...the range of the analog output Distance Analog Min Enter the min limit of the analog measure ment range in mm Distance Analog Max Enter the max limit of the analog mea surement range in mm Output Characteristic Not Inverted Inverted Inverting the analog output Baumer commands Output Scale at Analog Min Teach in min limit of the analog measure ment range alternatively to the Teach but ton Baumer co...

Страница 38: ...fter 5 min the timeout can be parameterized via IO Link Teaching the zero position in the Xpress mode Instruction a Place the measurement object at the desired position for the zero position b Keep the Teach button pressed for 2 seconds ü Green LED blinks with 2 Hz Result ü Teach In ok Sensor goes back to the operating mode ü Teach in not OK Green and yellow LEDs blink simultaneously with 8 Hz IO ...

Страница 39: ...is limited by the measurement rate and the distance change at the output is influenced by the selected filter value settings Therefore consider the measurement rate in connection with the settings of the filter The measuring frequency value depends on the exposure time The sensor automatically ad justs its exposure time to the object to be measured in order to always receive an optimum light quant...

Страница 40: ...ponse delay Ill 22 Response delay INFO Filter settings do not affect the response delay IO Link diagnostic data Response delay Name Description Measurement Values PV1 Response Delay Output of the response delay 9 3 Exposure reserve The exposure reserve indicates the light quantity reflected by the measurement object as a rel ative factor without unit The exposure reserve helps you with the followi...

Страница 41: ... recorded anymore 9 5 Device status The device status provides information about the status of the device IO Link diagnostic data Device status Name Description DeviceStatus n Output of the device status 0 Device OK in the operating state 1 Maintenance required critical signal quality 2 Outside the specification measured value cannot be recorded 9 6 Operating time The operating time of the sensor ...

Страница 42: ...f valid range n Number of intervals bins Example Measurement range of the sensor 50 550 mm n Unit mm n Start of valid range 50 mm n End of valid range 550 mm n Number of intervals bins 20 This yields Interval bin covers the following range 550 mm 50 mm 20 25 mm If the sensor records the value 76 mm 5 times and the value 162 mm 15 times in 20 measure ments the following distribution results Bin Val...

Страница 43: ...after the zero position has been moved the measured distance depends on the zero position Exposure reserve In each measurement a value is recorded for the exposure reserve As the exposure reserve is always described by a fixed value range the following information has a fixed value n Start of valid range 0 n End of valid range 100 n Number of intervals bins 20 This yields 1 interval covers a value...

Страница 44: ...e Description Baumer commands Exposure Reserve Resetable Histogram Reset Resetting the exposure reserve his togram Exposure Reserve Resetable Histogram Range Start Start of valid range Exposure Reserve Resetable Histogram Range End End of valid range Exposure Reserve Resetable Histogram Nbr of Bins Number of intervals bins Exposure Reserve Resetable Histogram Bin 1 20 Bin 1 20 ...

Страница 45: ...not affect the housing surface and seals NOTICE Material damage due to improper cleaning Unsuitable cleaning agents and methods can cause leaks and damage the sensor the seals or the connections a Always check the suitability of the cleaning agent for the surface to be cleaned b Do not use scouring agents solvents or other aggressive cleaning agents c Do not use jets of liquid for cleaning for exa...

Страница 46: ... be found in the data sheet n Remedy Move the measurement object into the measurement range n Error The measurement results are incorrect n Possible cause The direct reflection of the laser hits the receiver of the sensor This happens especially with shiny surfaces n Remedy Tilt the sensor to the side so that the direct reflection of the laser does not hit the receiver of the sensor n Error The me...

Страница 47: ...rams The following diagrams show the resolution of the analog output in relation to the measuring distance for the different sensor types The type code of the sensor shown is indicated in the caption Ill 23 Characteristic curves for OM20 x0026 xx Yxx Ill 24 Characteristic curves for OM20 x0120 xx Yxx ...

Страница 48: ...12 Annex Baumer 48 Operating Manual OM20 OM30 IO Link V2 Ill 25 Characteristic curves for OM30 x0100 xx Yxx Ill 26 Characteristic curves for OM30 x0350 xx Yxx ...

Страница 49: ...Baumer Annex 12 V2 OM20 OM30 IO Link Operating Manual 49 Ill 27 Characteristic curves for OM30 x0550 xx Yxx ...

Страница 50: ...2 Ill 14 Positive hysteresis 33 Ill 15 Negative hysteresis 33 Ill 16 Behavior of the switching output in point mode positive hysteresis 34 Ill 17 Behavior of the switching output in point mode negative hysteresis 34 Ill 18 Behavior of the switching output in window mode positive hysteresis 35 Ill 19 Behavior of the switching output in window mode negative hysteresis 35 Ill 20 Analog measurement fi...

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