LED Type Optical Displacement Sensor

Transcription

1 LED Type Optical Displacement Sensor User s Manual Sensor head LH-50 series General purpose controller LH-CL6, LH-CL6P First Edition

2 Contents Contents 1. INTRODUCTION CHECKING PACKED ITEMS...3 CHAPTER 1 CAUTIONS IN HANDLING 1-1 Working environment Wiring and noise countermeasures Warming-up CHAPTER 2 PART DESCRIPTION 2-1 Sensor head (LH-54/58/512) Controller (LH-CL6/CL6P) CHAPTER 3 MOUNTING AND CONNECTION 3-1 Mounting Sensor head Controller Connection Connection of sensor head to controller Cable extension I/O circuit diagram CHAPTER 4 FOR OPTIMUM MEASURMENT 4-1 Setting flow for optimum measurement Optimum setting method CHAPTER 5 USEFUL FUNCTIONS 5-1 Teaching function Analog output hold function level judgement External synchronization input Height measurement using 0-ADJ function...5-5

3 Contents CHAPTER 6 SETTING OPERATION 6-1 Configuration Functions and setting methods RUN MODE SET Table for initial settings CHAPTER 7 DESCRIPTION OF TERMS CHAPTER 8 ERROR INDICATION AND TROUBLESHOOTING 8-1 Error indication Troubleshooting CHAPTER 9 SPECIFICATIONS 9-1 Sensor head Controller CHAPTER 10 DIMENSIONS 10-1 Sensor head Controller

4 Introduction 1. INTRODUCTION Thank you very much for buying our LED type Optical Displacement sensor, sensor head LH-50 series / general purpose controller LH-CL6, LH-CL6P. Please read this User s Manual carefully and thoroughly to make the most of this product s excellent performance capabilities and to use it safely and correctly. This system has been strictly checked and tested prior to its delivery. However, before use, make sure that there is no abnormality caused by transportation and also perform an operation check. If the system is damaged in transit or does not perform as per the specifications, please contact our office. Notes Warranty There may be cases that the illustrations of the product shown in this manual differ slightly from the actual product. The contents of this manual may be subject to change without any prior notice. Further, any reproduction or modification of all or a part of this manual without permission is prohibited. Full care has been taken to prepare the contents of this manual. However, should there be any unclear point, error, etc., which you become aware of, please feel free to contact us. We shall not be responsible for any adverse consequences of operation, regardless of item 3 mentioned above. 1) Warranted period SUNX warrants this product for a period of one year from the date of purchase or delivery to the purchaser s appointed warehouse. 2) Scope of warranty During the above mentioned period, if a failure of the product occurs under normal use and operation, and if it is found by SUNX that it is responsible for the failure, it shall remedy the defect or tender substitution for exchange at its cost and expense. However, in no event shall SUNX be liable for the failure, damage or loss stipulated below: Failure caused by instructions, standards, or handling specified by the customer Failure caused by modifications done in the structure, capabilities, specifications, etc., without consulting SUNX, after the purchase or the delivery of the product delivery of the product Failure caused by a development which could not be foreseen based upon the technology in practice at the time of purchase or contract Failure caused by use which deviates from the conditions/environment given in the product catalog or specifications In case this product is used by being incorporated in the customer s machine, failure which could be avoided if the customer s machine had functions and structure commonly accepted in the industry Failure due to happening of Force Majeure Further, the warranty given here is limited only to this product which has been purchased or delivered. SUNX shall not be responsible for any consequential damage or

5 Introduction loss arising out of the failure of this product.

6 Introduction Explanation on Used Symbols This manual uses a variety of symbols to ensure safe operation. Before reading this manual, fully understand the meaning of these symbols. WARNING This symbol indicates a warning against things, places or states which may pose a risk or danger to the human body. CAUTION This symbol indicates caution against possibilities which may lead to product damage. NOTE This symbol indicates a possibility of wrong operation. REFERENC This symbol indicates matters which are convenient if remembered, or it provides reference for detailed descriptions of the concerned item.

7 Introduction 2. CHECKING PACKED ITEMS Before use, check to see that the following items are present in the package. LH-54/58/512 LH-54/58/512 Sensor head 1 No. Instruction manual1 No. LH-CL6/CL6P LH-CL6/CL6P Controller 1 No. Instruction manual 1 No. Controller mounting bracket (MS-DIN-3) 1 No.

8 Introduction MEMO

9 CHAPTER 1 CAUTIONS IN HANDLING 1-1 Working environment Wiring and noise countermeasures Warming-up...1-3

10 CHAPTER 1 Cautions in handling Working environment WARNING Although this sensor uses a red LED as the beam source, do not directly see the beam emitted from the sensor head, since it has been focused and has high optical intensity. 2. Never disassemble the products. 3. Make sure to carry out the wiring in the power supply OFF condition. CAUTION 4. Operate the products within an ambient temperature of 0 to +45 (sensor head), 0 to +50 (controller). Storage can be at an ambient temperature of -20 to Operate the products within 35 to 85% RH humidity. Further, do not use the product under conditions where condensation may occur due to drastic temperature variation.

11 CHAPTER 1 Cautions in handling CAUTION Ambient illuminance with incandescent light should be 3,000lx or less for LH-54 / 58 and 2,500lx or less for LH-512. Do not allow any water, oil, fingerprints etc., which may refract light, or dust dirt, etc., which may block light, to stick to the emitting/receiving surfaces of the sensor head. In case they are present, wipe them with a clean, soft cloth or lens paper. Take care that extraneous light, such as sunlight or light having the same wavelength, does not fall on the receiving part of the sensor head. Especially for accurate measurements, install a shield, etc., to block extraneous light. Take care that in case the measured object has a highly reflective surface or is transparent, accurate measurement may not be possible. Although the sensor has IP67 protection, measurement in water or rain is not possible. Further, the connector part is not water-proof. Avoid dust, dirt, and steam. Besides, avoid use at places subject to intense vibrations or shock. Take care that the sensor head does not come in direct contact with water, oil, grease, or organic solvents, such as thinner, etc. Verify that the power supply voltage variation is within the rating. If power is supplied from a commercial switching regulator, ensure that the frame ground (F.G.) terminal of the power supply is connected to an actual ground. If the controller is used for a long time, although it becomes hot, this does not indicate any abnormality. However, if the controller is used by being enclosed in a control box, make sure to provide proper ventilation.

12 CHAPTER 1 Cautions in handling 1-2 Wiring and noise countermeasures CAUTION 1. In case noise generating equipment (switching regulator, inverter motor, etc. ) is used in the vicinity of this product, connect the frame ground (F.G.) terminal of the equipment to an actual ground. The analog output and alarm output are not incorporated with a short-circuit protection circuit. Do not connect them directly to a power supply or a capacitive load. The controller cable can be extended up to total 50m with a 0.22mm², or more, cable. However, use a 0.15mm² shield wire for the analog output cable extension. Do not run the wires together with high-voltage lines or power lines or put them in the same raceway. This can cause malfunction due to induction. 1-3 Warming-up NOTE Take care that after switching on the power supply, there is a muting time of 5 sec. Use this product 10 min. after the power is supplied. Immediately on supply of power, the electrical circuit is yet to stabilize, which may cause variation in measured values.

13 CHAPTER 2 PART DESCRIPTION 2-1 Sensor head (LH-54/58/512) Controller (LH-CL6/CL6P)...2-3

14 CHAPTER 2Part description 2-1 Sensor head (LH-54/58/512) Emitting indicator (Yellow) Lights up during emission. Operation indicator Green Lights up when object is at center measuring distance. OrangeLights up when object is within measuring range. Turns off when object is outside measuring range. Off Lights up in orange Lights up in green Lights up in orange Off Outside measuring range Center Within measuring range Outside measuring range Emitting part Emits the LED beam. Receiving part Receives the reflected beam. Connector for controller It connects to the controller or the extension cable.

15 CHAPTER 2 Part description Spot diameter 2.4mm 1.6mm 1.0mm or lessor less or less 2.8mm 2.0mm 1.6mm or less or less or less.* LH-54 LH-58 Center measuring distance (40mm) Distance (mm) Center measuring distance (80mm) Distance (mm) 3.4mm 3.0mm 2.1mm or or less or or.* LH-512 Center measuring distance (120mm) Distance (mm) NOTE The spot diameter is based on the definition of 1/e ² (13.5%) of the beam axis light intensity. Take care that some amount of light spreads out of the specified spot diameter and, depending on the conditions around the measured object, may affect the measurement accuracy.

16 CHAPTER 2Part description 2-2 Controller (LH-CL6/CL6P) Comparative output indicator (Orange) Lights up when the respective comparative output is ON. There are two channels, OUT 1 and OUT 2. Emitting indicator (Yellow) Lights up during emission. 0-ADJ indicator (Green) Lights up on 0-ADJ operation. Analog output hold indicator (Orange) Lights up when analog output hold is set. Ext. Sync. Indicator (Green) Lights up when Ext. Sync. Input is effective. Jog switch Switch for setting item selection and setting ƒ ƒ ƒ Mode selection switch Switch for selecting the mode 5 digit LED display (Red) Displays measurement value, and setting item/settings. Connector for sensor head connection Connector for connection to sensor head

17 CHAPTER 3 MOUNTING AND CONNECTION 3-1 Mounting Sensor head Controller Connection Connection of sensor head to controll Cable extension I/O circuit diagram...3-5

18 CHAPTER 3 Mounting and Connection 3-1 Mounting Sensor head Setting method Adjust the distance between the sensor head and the measured object to be within the measuring range, by checking the operation indicator. Further, adjusting the reference position (center of displacement) of the measured object near the center measuring distance (LH-54: 40mm, LH-58: 80mm, LH-512: 120mm) results in stable measurement. Off Outside measuring range Lights up in orange Lights up in green Center Lights up in orange Within measuring range Off Outside measuring range Install the sensor head, such that the surface of the measured object is parallel to the sensing face of the sensor head. Use the two mounting holes and fix the sensor head firmly. However, note that the tightening torque should be 0.5Nm or less. Since the emitting/receiving surfaces of the sensor head use glass, take care that they are not subject to direct shock. Further, do not allow any water, oil, fingerprints, etc., which may refract light, or dust, dirt, etc., which may block light, to stick to the emitting/receiving surfaces of the sensor head. In case they are present, wipe them with a clean, soft cloth or lens paper. If the light reflected from the measured object is reflected once again from the surrounding objects and is received by the sensor head, the measurement is affected. Install the sensor head away from such objects or color them with non-glossy black paint so that reflected light is not received from the surroundings. Direction of mounting In case the measured object is moving as shown below, take care of the mounting direction of the sensor head, as an error may be generated depending on the mounting direction. Eccentricity measurement Level difference measurement In case of extreme change in color or material at a boundary

19 CHAPTER 3 Mounting and Connection Mounting of several sensor heads In case several sensor heads are arranged in a row, mount them by keeping the minimum distance given below. When interference prevention function is used A B C D LH-54 0mm 0mm 10mm 17mm LH-58 0mm 0mm 10mm 17mm LH-512 0mm 0mm 30mm 17mm When interference prevention function is not used A B C D LH-54 20mm 40mm 90mm 20mm LH-58 40mm 100mm 100mm 20mm LH mm 150mm 210mm 20mm CAUTION REFERENCE Regarding the interference prevention function, please refer to page 3-9 Interference prevention function input. Please refer to page 6-19 Interference prevention setting for setting method. If light from the opposite side sensor is not received, even D=0 is OK.

20 CHAPTER 3 Mounting and Connection Controller How to mount the controller Fit the rear part on the attached controller mounting bracket (MS-DIN-3) or a 35mm width DIN rail. down the front part of the controller on the controller mounting bracket (MS-DIN-3) or the DIN rail to fit it. How to remove the controller Push the controller forward. Lift up the front part of the controller to remove it. CAUTION Please take care that if the front part is lifted without pushing the controller forward, the hooks on the rear portion of the mounting section are likely to break.

21 CHAPTER 3 Mounting and Connection 3-2 Connection Connection of sensor head to controller Hold the sensor head s connector and insert it into the connector provided on the controller for sensor head connection, till its outer ring locks. To remove the sensor head, hold its connector by the outer ring and pull it straight out. While removing the connector from the controller, take care not to touch the terminals inside the connector. CAUTION Make sure to connect or disconnect the connector to the controller in the power supply off condition. Do not pull by holding the cable, as this can result in cable disconnection Cable extension To extend the connection cable between the sensor head and the controller, use the optional exclusive cable. Three types of cable, 2m type (LH-CCJ2), 5m type (LH-CCJ5) and 10m type (LH-CCJ10), are available. Note that although the cable can be extended up to 10m, do not connect together two or more 2m type cables or two 5m type cables. Sensor head Controller LH-CCJ2 (2m) LH-CCJ5 (5m) Sensor head Controller LH-CCJ2 (2m) LH-CCJ5 (5m) LH-CCJ10 (10m)

22 CHAPTER 3 Mounting and Connection I/O circuit diagram LH-CL6 / NPN Output type Color code (Brown) +V Load (Black/White) Output 1 100mA max. Load (Black/Gray) Output 2 100mA max. Load 24V DC 10% (Gray) Alarm output Main circuit 100mA max. (Blue) 0V (Black) Analog voltage output -5 to +5 (Note 1) (Black shield) Analog voltage output GND (White) Analog current output 4 to 20mA (Note 2) (White shield) Analog current output GND (Light blue) 0-ADJ input (Violet) Ext. Sync. input (Pink) Remote interlock input (Orange/Violet) Interference prevention I/O (Note 3) (Pink/Black) Input COM (Blue/White) Input COM Internal circuit Users circuit Non-voltage contact or NPN open-collector transistor SymbolsD1Reverse supply polarity protection diode D2 to D5Input protection diode Z D1 to Z D5Surge absorption zener diode Tr1 to Tr3NPN output transistor or 0-ADJ input, Ext. Sync. input Low(0 to 1V): Effective High(+V or open): Ineffective Remote interlock input Low(0 to 1V): Emission High(+V or open): Emission stopped

23 CHAPTER 3 Mounting and Connection LH-CL6P/ PNP output type Main circuit Color code (Brown)+V 100mA max. (Black/White) Output 1 24V DC 10% 100mA max. (Black/Gray) Load Output 2 100mA max (Gray) Load Alarm Load output (Blue) 0V (Black) Analog voltage output -5 to +5 (Note 1) (Black shield) Analog voltage output GND (White) Analog current output 4 to 20mA (Note 2) (White shield) Analog current output GND (Light blue) 0-ADJ input (Violet) Ext. Sync. input (Pink) Remote interlock input (Orange/Violet) Interference prevention I/O (Note 3) (Pink/Black) Input COM (Blue/White) Input COM Internal circuit Users circuit Non-voltage contact or PNP open-collector transistor Symbols D1Reverse supply polarity protection diode D2 to D5Input protection diode Z D1 to Z D5Surge absorption zener diode Tr1 to Tr3PNP output transistor or 0-ADJ input, Ext. Sync. input Low(0 to 1V, or open): ineffective High(+V): Effective Remote interlock input Low(0 to 1V or open): Emission stopped High(+V: Emission Notes: 1) The device connected to analog output voltage (black) should have an input impedance of 1M or more. 2) The device connected to the analog current output (white) should have a load resistance of 300 or more. 3) Do not connect an interference prevention I/O wire other than of LH-CL6 or LH-CL6P to CAUTION the interference prevention I/O (orange/violet). Further, do not connect together two controllers which have both been set as masters during interference prevention setting, as this will cause a fault. 4) The analog output and the alarm output are not incorporated with a short-circuit protection circuit. Do not connect them directly to a power supply or a capacitive load. 5) Insulate the unused wires so that they do not contact the other wires.

24 CHAPTER 3 Mounting and Connection Power supply input [ Brown (+), Blue (-) ] Input 24V DC10% (Ripple P-P 10% or less). If a power supply transformer is used, make sure to use an isolation transformer. Comparative Output 1, 2 (OUT 1, OUT 2) [ Black/White, Black/Gray ] Based on the set threshold values, the result of comparison is output by an NPN or PNP open-collector transistor. NOTE In case Ext. Sync. function is not used, short-circuit Ext. Sync. Input (violet) to input com (blue/white). Unless it is short-circuited, the comparative output is not effective. REFERENCE The timing of comparison for the comparative output can be externally controlled by using Ext. Sync. input. Please refer to page 5-4 Ext. synchronization input for details. Regarding Ext. Sync. input, please refer to page 3-8 Ext. Sync. input. Alarm output [ Gray ] This is output when an error, such as, no object in the measuring range, (NEARFAR error), insufficient light (DARK) or too much light (BRIGHT), occurs. Alarm output Normal measurement condition ON When error occurs DARK, BRIGHT, or other errors) OFF REFERENCE Please refer to page 6-3 Measured value display for NEAR or FAR, DARK, BRIGHT and other errors, and to page 3-8 Analog displacement output diagrams for the alarm output. Analog voltage output [ Black, Black shield (GND) ] Within the measurement range, the analog voltage corresponding to the displacement is output. Please refer to analog displacement output diagrams below. CAUTION The device connected to analog voltage output should have an input impedance of 1M or more.

25 CHAPTER 3 Mounting and Connection Analog current output [ White, White shield (GND) ] Within the measurement range, the analog current corresponding to the displacement is output. Please refer to analog displacement output diagrams below. CAUTION The device connected to analog current output should have a load resistance of 300 or less. Analog displacement output diagram LH-54 LH-58 LH-512 Center measuring distance (40mm) Center measuring distance (80 mm) Center measuring distance (120mm) Measuring range Measuring range Measuring range D isplacement voltage(v) (21.6mA) + 5 (20mA) (12mA) Distance (mm) D isplacement voltage(v) (21.6mA) + 5 (20mA) (12mA) Distance (mm) D isplacemen voltage(v) (21.6mA) + 5 (20mA) (12mA) Distance (mm) Alarm Output -5-5 (4mA) -5 (4mA) (4mA) Alarm Alarm OFF ON OFF OFF output ON OFF output OFF ON OFF 0 - ADJ input [ Light blue ] Short-circuiting 0-ADJ input (light blue) to input com (blue/white) forcibly adjusts the measured value and the analog output to 0, and the value at this time is taken as the standard 0 for measurements. REFERENCE Please refer to page ADJ for details of the setting and functions. External Sync. input [ Violet ] Short-circuiting external sync. input (violet) to input com (blue/white) enables external synchronization input. This function enables you to externally control the timing of judgement for the comparative output. Detection signal Detected Not detected High Ext. Sync. input Low ON Comparative output OFF NOTE In case Ext. Sync. function is not used, short-circuit Ext. Sync. Input (violet) to input com (blue/white). Unless it is short-circuited, the comparative output is not effective.

26 CHAPTER 3 Mounting and Connection Remote interlock input [ Pink, Pink/Black ] LED emission ON/OFF can be externally controlled by connection/disconnection of remote interlock input (pink) to input com (pink/black). Interference prevention function [ Orange/Violet ] This function is used to avoid interference when 2 sensor heads are installed close to each other, etc. For two controllers, connecting the I/O wire of one controller to the I/O wire of the other controller (connecting the orange/violet lead wires together) puts the sensor in interference prevention mode. In case a number of sensor heads are used closely, take care of the interference range, given in the table below, during installation. Controller set as Master Controller set as Slave Orange/Violet Orange/Violet A B C D A B C D LH-54 0mm 0mm 10mm 17mm LH-58 0mm 0mm 10mm 17mm LH-512 0mm 0mm 30mm 17mm REFERENCE Please refer to page 6-19 Interference prevention function setting for details of setting. CAUTION When this function is used, the linearity, resolution, and response time may deteriorate. Do not connect an interference prevention I/O wire other than of LH-CL6 or LH-CL6P to the interference prevention I/O (orange/violet). Further, do not connect together two controllers which have both been set as masters during interference prevention setting, as this will cause a fault. If light from the opposite side sensor is not received, even D=0 is OK.

27 CHAPTER 4 FOR OPTIMUM MEASUREMENT 4-1 Setting flow for optimum measurement Optimum setting method...4-2

28 CHAPTER For optimum measurement 4-1 Setting flow for optimum measurement Setting flow for the sensor head and the controller In this product, the sensor heads and the controllers can be used in any combination. Before commencing the measurement, follow the setting flow shown below in order to make the most of this product s excellent performance capability. Mount the sensor head Please refer to page 3-1 ŸSensor head for mounting details. Power ON Gain setting Shift adjustment Span adjustment Analog voltage (current) output offset adjustment Please refer to page 6-15 Gain setting for details. Please refer to page 6-8 Shift adjustment for details. Please refer to page 6-8 ŸSpan adjustment for details. Please refer to page 6-21 Analog current output offset setting and page 6-22 Analog voltage output offset setting for details. Start measurement

29 4-2 Optimum setting method Mount the sensor head CHAPTER4 For optimum measurement Step Setting method Details Adjust the distance between the sensor head and the measured object to be within the measuring range, by checking the operation indicator. Off Orange Green Orange Oran ge Off Page 3-1 Sensor head Power ON Gain setting Outside measuring range Center Outside measuring Measuring range range Set the object to be measured within the measuring range and at the closest position from the sensor head. Example: In case of measuring at 30 to 50mm with LH-54. Page 6-5 Gain setting When the measured object color does not change 30mm In SELECT setting, carry out the gain setting to display GOOD 3. Depending on the reflection ratio or gloss of the measured object, it is possible that GOOD 3 state does not change even if the gain is changed. In that case, set the gain at one level lower than the highest gain for GOOD 3. Because of the same reason mentioned above, it is possible that GOOD 3 does not light up. In that case, set the gain at the highest gain for GOOD 2. GOOD 2 Measured object Optimum state GOOD 3 BRIGHT state When the measured object color changes frequently Set the object to be measured within the measuring range. Example: In case of measuring at 30 to 50mm with LH-54. Measured object (30mm to 50mm) to 50mm) Set the gain setting to AUTO. Setting display

30 CHAPTER For optimum measurement Step Setting method Details Shift adjustment Set the object to be measured at the center of the measuring range. Example: In case of measuring at 30 to 50mm with LH-54. Page 6-5 ŸShift adjustment (40mm) Center of measuring range Measured object Carry out shift adjustment to display the desired measurement value. Measurement value display Measurement value display Span adjustment (NEAR side) In case the range to be measured is 50% or more of full-scale As shown in the figure below, set the object to be measured at position A, which is at the given distance from the center of the range to be measured, towards the sensor head side (NEAR side). Example: In case of measuring at 30 to 50mm with LH-54. A Center of the range to be measured Measured object (35mm) 5mm Distance of position A from center of range to be measured LH-54 :5mm LH-58 :10mm LH-512 :15mm In case the range to be measured is less than 50% of full-scale Set the object to be measured within the range to be measured at the position which is nearest (NEAR side) to the sensor head. Example: In case of measuring at 36 to 44mm with LH-54. Page 6-8 Span adjustment Position which is nearest to the sensor head within the range to be measured. Measured object (36mm) Carry out span adjustment to display the desired measured value. Example: In case the measurement value is to be 30 to 50mm with LH-54. Measurement value display Measurement value display

31 CHAPTER4 For optimum measurement Step Setting method Details Span In case the range to be measured is 50% or more of full-scale Page 6-8 adjustment As shown in the figure below, set the object to be measured at Span position B, which is at the given distance from the center of the adjustment (FAR side) range to be measured, away from the sensor head side(far side). Example: In case of measuring at 30 to 50mm with LH-54. Distance of position B from center of range to be measured LH-54 :5mm LH-58 :10mm LH-512 :15mm Center of the range to be measured B Measured object (45mm) 5mm In case the range to be measured is less than 50% of full-scale Set the object to be measured within the range to be measured at the position which is farthest (FAR side) from the sensor head. Example: In case of measuring at 36 to 44mm with LH-54. Center of the range to be measured Measured object (44mm) Position which is the farthest from the sensor head within the range to be measured. If the measured value is different, adjust the span of FAR side and the NEAR side to balance them. FAR side span adjustment Measurement value display Adjust Measurement value display NEAR side span adjustment Measurement value display Adjust Measurement value display Off-set adjustment of analog voltage (current) output Fine-adjust the output value of digital panel meter, etc. Page 6-21 Analog current output off-set setting Page 6-22 Analog voltage output off-set setting Start measurement

32 CHAPTER For optimum measurement MEMO

33 CHAPTER 5 USEFUL FUNCTIONS 5-1 Teaching function Analog output hold function level judgement External synchronization input Height measurement using 0-ADJ function...5-5

34 CHAPTER 5 Useful functions Use of functions incorporated in this displacement sensor enables various measurements besides a simple displacement measurement. 5-1 Teaching function In case of measurement of height (thickness) to inspect and decide if the measured object is within the specifications, the threshold value of the comparative output can be automatically set by simply pressing the jog switch. Example Object 1 (OK) Teaching 1 Teaching 2 Object ( NG ) The threshold value of the comparative output is automatically set at the mid-value between the measurement value of Object 1 and the measurement value of Object 2. Measurement value of Object 1 Threshold value Measurement value of Object 2 Object 1 Object 2 REFERENCE Please refer to page 6-32 Teaching 1 or page 6-34 Teaching 2 for details.

35 CHAPTER 5 Useful functions 5-2 Analog output hold function Continuous analog output data can be obtained even if there are extreme changes (e.g. holes etc.) that can cause an error on the measured surface of the object. Measurement of the height of these surfaces Measurement along this line Analog output hold OFF condition 5.5 V Analog voltage output 5.5 Analog output becomes 5.5V (measurement error) at the holes and continuous measurement cannot be done. Analog output hold ON condition Analog voltage output The previous measured value is held. Hold REFERENCE Please refer to page 6-18 Analog output hold setting for details.

36 CHAPTER 5 Useful functions level judgement This product incorporates two independent comparative outputs. Further, for each comparative output, threshold level/output operation setting (NEAR ON, FAR ON) can be selected. Hence, 3 - level judgement is possible. Example In case OUT 1 is set to FAR ON and OUT 2 is set to NEAR ON. LO GO HI OUT 1 Threshold level FAR ON setting OUT 2 Threshold level NEAR ON setting OUT 1 OFF ON OFF OUT 2 ON OFF OUT 1 OUT 2 Judgement OFF OFF No object OFF ON LO ON ON GO ON OFF HI REFERENCE Please refer to page 6-11 Comparative output threshold level setting for details.

37 CHAPTER 5 Useful functions 5-4 External synchronization input By inputting a measurement pulse to the external sync. input, the judgement timing of the comparative output can be controlled. Sync. sensor External Sync. input Measuring state DARK OK DARK OK DARK NG DARK OK DARK External Sync. input ON OFF Comparative output ON OFF REFERENCE Please refer to page 3-5~ I/O Circuit diagram, and page 3-8 External Sync. input for details of connection.

38 CHAPTER 5 Useful functions 5-5 Height measurement using 0-ADJ function Using the 0-ADJ functions, the output corresponding to the standard level can be forcibly set to 0. Hence, an error check is possible by taking the measured master work piece values as standard to discriminate between good and bad pieces. Standard level Height measurement from the standard level Measured surface External Sync. sensor 0-ADJ Sync. sensor To 0-ADJ input External Sync. input Measured surface Measurement value Height from the standard level 0-ADJ Sync. pulse The measurement value at this point is standard 0. Standard surface ON External Sync. input OFF ON Comparative output OFF Judgement OK/NG REFERENCE Please refer to page 3-5~ I/O circuit diagram and page ADJ input for details of connection. Please refer to page ADJ for detailed setting method.

39 CHAPTER 6 SETTING OPERATION 6-1 Configuration Functions and setting method RUN ŸMeasurement value display ŸPanel lock setting MODE ŸShift adjustment setting ŸSpan adjustment setting ŸComparative output threshold level setting ŸComparative output timer setting ŸGain setting ŸResponse time setting ŸAnalog output hold setting ŸInterference prevention setting ŸAnalog current output offset setting ŸAnalog voltage output offset setting ŸDisplacement dispay setting ŸSleep setting ŸAll reset SET Ÿ0-ADJ ŸTeaching ŸTeaching Table for initial settings

40 CHAPTER SettingOperation Configuration RUN MODE SET MODE RUN SET MODE RUN Page 6-3 Measurement value display Present measurement value is displayed. - Page 6-5 Shift adjustment ÑÔÒwv setting + - Set ÑÔÒwÊ shift adjustment 10 1(( to Î ON vèìèâ or OFF. When shift adjustment is ON, set the shift amount. + Other settings 3 sec. or more Page 6-4 Panel lock setting ÓÓÖÖÒÐÊ Â Î Set panel lock to ON or vèìèâ OFF Page 6-8 Page 6-11 Comparative ÈÇÆv output threshold setting - + Comparative ÑÏÔv output timer setting - Span adjustment setting Set ÑÓ wê span adjustment 101(( to Î ON vèìèâ or OFF. When span adjustment is ON, set the span amount. Set the threshold value of comparative output. Select either OUT 1 or OUT 2 and either NEAR ON or FAR ON. Then, set the threshold value. Page 6-13 Set the timer of comparative output. Select OFF timer, ON delay, or OFF delay and select the timer interval Gain setting Page 6-17 Response time setting Set response time. Select the response time. Page 6-15 Set gain. Select either AUTO setting or SELECT setting. In case of SELECT setting, select the suitable gain.

41 CHAPTER 6 SettingOperation SET SET MODE RUN Page 6-18 Analog output hold setting Set analog output hold to ON or OFF. Page 6-19 Interference v prevention setting - + Set Interference prevention function. Select either Single, Master, or Slave. Page 6-21 Analog current output offset setting - Set analog current output offset to ON or OFF. In case of ON state, set the offset amount. t Page 6-22 Analog voltage output offset setting Set analog voltage output offset to ON or OFF. In case of ON state, set the offset amount Page 6-25 All reset Initialize the setting values. Page 6-24 Sleep setting Set sleep function to ON or OFF. Page Displacement sv display setting Set displacement display. Select either distance monitor (DISTANCE) or displacement monitor (CENTER). - 0-ADJ Page 6-32 Teaching 1 Page 6-26 Page Set 0-ADJ to ON or OFF and 0-ADJ Store to ON or OFF. Set Teaching 1 to ON or OFF and Teaching 1 Store to ON or OFF. Teaching 2 Set Teaching 2 to ON or OFF and Teaching 2 Store to ON or OFF.

42 CHAPTER SettingOperation 6-2 Functions and setting methods RUN Set the mode selection switch to RUN. SET RUN MODE Measurement value display When sensor head emission is ON Present measurement value is displayed. Measurement value can be displayed as either displacement monitor or distance monitor. (Example) REFERENCE Please refer to page 6-23 Displacement amount display setting for setting of displacement monitor and distance monitor. When sensor head emission is OFF In case LED does not emit due to remote interlock setting, the display is as shown at the right. REFERENCE Please refer to page 3-9 Remote interlock input for ON/OFF of emission. When outside measuring range, or for insufficient/excess light Error description Display When the measured object is outside the near side of the measuring range (NEAR) When the measured object is outside the far side of the measuring range (FAR) When light is insufficient (DARK) When light is excessive (BRIGHT) NOTE Please refer to page Error indication for other error indications. In case the measured object is outside the measuring range and is very close to the sensor head, the measured value may be displayed, instead of NEAR or BRIGHT indication. Please ensure to set the object to be measured within the measuring range. Measurement value may be unstable near the boundaries of the measuring range. Please ensure to correctly set the object to be measured within the measuring range.

43 Panel lock setting CHAPTER 6 SettingOperation Setting the panel lock setting to ON enables the sensor to be put in a state in which operation with the mode selection switch and jog switch is not effective, unless the setting is cancelled. Initial setting: OFF Setting procedure Select mode selection switch to RUN SET Measurement value display MODE RUN 3 sec. or more Set Panel lock to OFF Enter Set Panel lock to ON NOTE Panel lock is maintained even if the power is switched OFF. Panel lock set/cancel is selectable only when the mode selection switch is on RUN. ing the jog switch at the end of the setting conforms the setting, which is written into an EEPROM. If the setting is to be cancelled before confirmation, slide the mode selection switch to another position.

44 CHAPTER SettingOperation MODE Set the mode selection switch to MODE. SET RUN MODE Shift adjustment setting In case the relation between displacement amount and output is desired to be calibrated, shift adjustment is possible. By shift adjustment, the relation between the distance from the sensor head to the measured object and the measured value or the analog output value can be shifted vertically within 10% of full scale. Example: LH-54 Measurement value display Change of 5mm Measurement value display 40mm Analog voltage: 0V Analog current: 12mA 35mm Analog voltage: -2.5V Analog current: 8mA If change from to is desired Measurement value display Analog voltage: -2V Analog current: 8.8mA Change by +1mm with shift adjustment (Please refer to page 6-7 Setting procedure.) Features of shift adjustment setting Relation between displacement amount and output can be adjusted within10% of full-scale (1.0V approx. for analog voltage output and 1.6m approx. for analog current output). Analog output shift adjustment is for, both, current output and voltage output. This setting acts on, both, measurement value display and analog output. If the set values exceed the upper/lower limit of the analog output, they are held at at upper/lower limit of full-scale. Further, the measurement value display is also held at the upper/lower value of full-scale. Initial setting: OFF (zero shift) REFERENCE This function can be used together with 0-ADJ setting. Please refer to page ADJ for details.

45 CHAPTER 6 SettingOperation Analog displacement output diagram LH-54 Center measuring distance (40mm) LH-58 Center measuring distance (80mm) Displacement output (V) (20mA) mA +1.0 Displacement output (V) (20mA) mA Distance -1.0 (mm) (10.4mA) Distance -1.0 (mm) (10.4mA) -5 (4mA) -5 (4mA) LH-512 Center measuring distance (120mm) Displacement output (V) (20mA) mA Distance -1.0 (mm) (10.4mA) -5 (4mA) NOTE After shift adjustment, the set values that exceed the upper/lower limit of the measurement value or analog output are held at the upper/lower limit of full-scale.

46 CHAPTER SettingOperation Setting procedure Set the mode selection switch to MODE. Turn the jog switch towards the + or the - side to display the shift adjustment setting. (Please refer to page Configuration for the operation procedure until now.) Shift OFF Blinks Enter Shift adjustment is set to OFF. Shift ON Select either Shift ON or Shift OFF by turning the jog switch to the + or the - side. In case the set value is to be increased, turn the jog switch a little to the + side to increase the set value slowly. If the jog switch is turned fully to the + side, the set value increases rapidly. Present measurement value is displayed. In case the set value is to be decreased, turn the jog switch a little to the - side to decrease the set value slowly. If the jog switch is turned fully to the - side, the set value decreases rapidly. Enter Shift value is set. NOTE ing the jog switch at the end of the setting confirms the setting, which is written into an EEPROM. If the setting is to be cancelled before confirmation, slide the mode selection switch to another position.

47 Span adjustment setting CHAPTER 6 SettingOperation In case the relation between displacement amount and output is desired to be calibrated, span adjustment is possible. By span adjustment, the output span (slope) of the measurement value or analog output versus the distance from the sensor head to the measured object can be adjusted within 10% of full scale. Example: LH-54 Change of 5mm Measurement value display Measurement value display 40mm 35mm If change from to is desired. Measurement value display Change by mm with span adjustment. (Please refer to page 6-10 Setting procedure for details.) Features of span adjustment setting The span (slope) of the output versus the displacement can be adjusted within 10% of full scale (10V approx. for analog voltage output and 1.6m approx. for analog current output). Analog output span adjustment is for, both, current output and voltage output. This setting acts on, both, measurement value display and analog output. If the set values exceed the upper/lower limit of the analog output, they are held at the upper/lower limit of full-scale. Further, the measurement value display is also held at the upper/lower value of full-scale. Initial setting: OFF (Span amount 1) REFERENCE This function can be used together with 0-ADJ setting. Please refer to page ADJ for details.

48 CHAPTER SettingOperation Analog displacement output diagram LH-54 Center measuring distance (40mm) LH-58 Center measuring distance (80mm) (20mA) (20mA) Displacement Output (V) Displacement Output (V) Distance (mm) Distance (mm) -5 (4mA) -5 (4mA) LH-512 Center measuring distance (120mm) Displacement Output (V) (20mA) Distance (mm) -5 (4mA) NOTE After span adjustment, the set values that exceed the upper/lower limit of the measurement value or analog output are held at the upper/lower limit of full-scale.

49 CHAPTER 6 SettingOperation Setting procedure Set the mode selection switch to MODE. Turn the jog switch towards the + or the - side to display the span adjustment setting. (Please refer to page Configuration for the operation procedure until now.) Span OFF Blinks Enter Span adjustment is set to OFF. Span ON Select either Span ON or Span OFF by turning the jog switch to the + or the - side. In case the set value is to be increased, turn the jog switch a little to the + side to increase the set value slowly. If the jog switch is turned fully to the + side, the set value increases rapidly. Present measurement value is displayed. In case the set value is to be decreased, turn the jog switch a little to the - side to decrease the set value slowly. If the jog switch is turned fully to the - side, the set value decreases rapidly. Enter Span value is set. NOTE ing the jog switch at the end of the setting confirms the setting, which is written into an EEPROM. If the setting is to be cancelled before confirmation, slide the mode selection switch to another position.

50 CHAPTER SettingOperation Comparative output threshold value setting The comparison result is output, based on the set threshold values. Two independent outputs (OUT 1 & OUT 2) are available. For each output, threshold values and output operation can be set. There are two types of output operation, NEAR ON and FAR ON. Further, the timing to judge the comparative output can be specified by an external synchronization input. The following explains the setting procedure for output operation and threshold value. OUT 1 : FAR ON OUT 2NEAR ON Comparative output OUT 1 OUT 2 Hysteresis Hysteresis: 0.15%F.S. ON OFF Hysteresis ON OFF OUT1 set value OUT2 set value Displacement output () OUT 1: FAR ON OUT 2: FAR ON Comparative output OUT 1 OUT 2 Hysteresis Hysteresis: 0.15%F.S. ON OFF Hysteresis ON OFF OUT 1 set value OUT 2 set value Displacement output () Hysteresis: 0.15%F.S. OUT 1: NEAR ON OUT 2: NEAR ON Comparative output OUT 1 OUT 2 Hysteresis Hysteresis ON OFF ON OFF OUT1 set value OUT 2 set value Displacement output () Initial settingthreshold value Measurement center Output operationnear ON REFERENCE Please refer to page 3-8 External Sync. input for external synchronization input. Please refer to page External Synchronization input for further details. Threshold values can be also set by teaching with an actual object. Please refer to page 6-32 Teaching 1 or page 6-34 Teaching 2 for details.

51 CHAPTER 6 SettingOperation Setting procedure Set the mode selection switch to MODE. Turn the jog switch towards the + or the - side to display the comparative output threshold value setting. (Please refer to page Configuration for the operation procedure until now.) Select either OUT 1 or OUT 2 by turning the jog switch towards the + side or the - side. Select either FAR ON or NEAR ON by turning the jog switch towards the + side or the - side. OUT 1 FAR ON OUT 2 NEAR ON In case the threshold value is to be increased, turn the jog switch a little to the + side to increase the threshold value slowly. If the jog switch is turned fully to the + side, the threshold value increases rapidly. Present threshold value is displayed. In case the threshold value is to be decreased, turn the jog switch a little to the - side to decrease the threshold value slowly. If the jog switch is turned fully to the - side, the threshold value decreases rapidly. Enter The display blinks thrice, and then the threshold value is set. NOTE ing the jog switch at the end of the setting confirms the setting, which is written into an EEPROM. If the setting is to be cancelled before confirmation, slide the mode selection switch to another position.

52 CHAPTER SettingOperation Comparative output timer setting This function sets a timer for the comparative output or alarm output. ON-delay timer, which is useful when sensing only objects with a long passage time, and OFF-delay timer, which is useful when the sensor is connected to devices having a slow response time, etc., are incorporated. The timer period can be selected from four values: 40ms, 100ms, 200ms or 500ms. ON-delay timer OFF-delay timer Without timer : Neglects short detection signals. : Extends the output signal by a fixed time interval. : Timer is not used. Initial setting : Without timer Sensing condition Sensing Not sensing ON Without timer OFF ON-delay T ON OFF OFF-delay T T T ON OFF NOTE The timer setting is common for comparative outputs, OUT 1, OUT 2 and alarm output.

53 CHAPTER 6 SettingOperation Setting procedure Set the mode selection switch to MODE. Turn the jog switch towards the + or the - side to display the comparative output timer setting. (Please refer to page Configuration for the operation procedure until now.) Select Without timer, ON-delay or OFF-delay by turning the jog switch towards the + side or the - side. Without timer Enter Without timer is set. Set the timer interval to 40, 100, 200 or 500ms by turning the jog switch towards the + side or the - side. ON-delay 40ms 100ms OFF-delay 200ms 500ms Enter Selected timer interval is entered. NOTE ing the jog switch at the end of the setting confirms the setting, which is written into an EEPROM. If the setting is to be cancelled before confirmation, slide the mode selection switch to another position.

54 CHAPTER SettingOperation Gain setting Gain setting is the setting of the receiving light sensitivity of the sensor head. This product calculates the measurement value by the reflected light from the measured object. Therefore, it is necessary to set the receiving light sensitivity of the sensor head suitably to account for any changes in the received light due to the reflectivity of the object s surface. Gain setting can be selected from two types, AUTO setting or SELECT setting. AUTO : Gain is automatically changed according to the change in the reflectivity (received light) of the measured object. (Note 1) SELECT: Receiving light sensitivity can be selected from 11 settings according to the measured object. Further, the optimum gain can be confirmed by checking the LED indications of BRIGHT, GOOD, or DARK (see the diagram below). Set the gain so that GOOD 3 is displayed. (Note 2) DARK state GOOD 1 GOOD 2 GOOD 3 BRIGHT state BRI. GOOD DAR. BRI. GOOD DAR. BRI. GOOD DAR. BRI. GOOD DAR. BRI. GOOD DAR. Light intensity : Low Optimum state Light intensity : High During SELECT setting, if the measured object is outside the measuring range, the following display appears. In this case, set the measured object within the measuring range. If the measured object is outside the near side of the measuring range (NEAR) BRI. GOOD DAR. If the measured object is outside the far side of the measuring range (FAR) BRI. GOOD DAR. Initial setting : SELECT setting 04 NOTE 1) In the auto setting, the linearity and resolution may deteriorate. 2) Depending on the reflection ratio or gloss of the measured object, it is possible that GOOD 3 state does not change even if the gain is changed. In that case, set the gain at one level lower than the highest gain for GOOD 3. Because of the same reason mentioned above, it is possible that GOOD 3 does not light up. In that case, set the gain at the highest gain for GOOD 2.

55 CHAPTER 6 SettingOperation Setting procedure Set the mode selection switch to MODE. Turn the jog switch towards the + or the - side to display the gain setting. (Please refer to page Configuration for the operation procedure until now.) Select AUTO setting or SELECT setting by turning the jog switch towards the + side or the - side. Depending on the gain setting, the three digits on the right indicate either BRIGHT, DARK, or GOOD. SELECT setting Select the sensitivity from 1 to 11 by turning the jog switch towards the + side or the - side. Selected gain is entered. Enter Auto setting is entered. AUTO setting Enter NOTE ing the jog switch at the end of the setting confirms the setting, which is written into an EEPROM. If the setting is to be cancelled before confirmation, slide the mode selection switch to another position.

56 CHAPTER SettingOperation Response time setting This function changes the response time. The response time can be selected from eight values : 0.5, 1, 10, 20, 30, 40, 100 or 300ms. The resolution changes depending upon the selected response time. Hence, set the required response time taking the resolution into consideration. For measuring the displacement accurately : Set to slow response time. (High resolution) For fast response : Set to fast response time. (Low resolution) Initial setting : 300ms Setting procedure Set the mode selection switch to MODE. Turn the jog switch towards the + or the - side to display the response time setting. (Please refer to page Configuration for the operation procedure until now.) Select the response time as 0.5, 1, 10, 20, 30, 40, 100 or 300ms by turning the jog switch towards the + side or the - side. The response time is entered. Enter NOTE ing the jog switch at the end of the setting confirms the setting, which is written into an EEPROM. If the setting is to be cancelled before confirmation, slide the mode selection switch to another position.