96M10800 Instruction Manual CCD Laser Displacement Sensor LK-3100 Series
CONTENTS SAFETY INFORMATION FOR LK-3100 SERIES Safety Information for LK-3100 series ............................................ 2 Safety Precautions on Laser Product ............................................. 3 Checking the Package Contents ..................................................... 6 Part Names ..................................................................................... 7 Connections ....................................................................................
SAFETY PRECAUTIONS ON LASER PRODUCT IEC (French) Class 2 1. Classification Model FDA (CDRH) 21 CFR Part 1040.10 IEC/EN 60825-1 DIN EN 60825-1 LK-011 Class II Class 2 Class 2 2.
SAFETY PRECAUTIONS ON LASER PRODUCT 4. Safety consideration CAUTION Use of controls or adjustments or the performance of procedures other than those specified herein may result in hazardous radiation exposure. WARNING Follow the instructions mentioned in this manual. Otherwise, injury to the human body (eyes and skin) may result. Precautions on class II/2 laser products • Do not stare into the beam.
SAFETY PRECAUTIONS ON LASER PRODUCT 5. Safety features provided with the LK-3100 series The LK-3100 series is provided with the following safety features. Make sure these features function correctly before operating. ■ Remote interlock terminal Laser emission can be stopped by disconnecting the REMOTE terminal from the GND terminal. ■ Key-operated laser switch + A key-operated switch controls the LK-3100 series laser. Remove the key when the laser is not in use.
CHECKING THE PACKAGE CONTENTS The LK-3100 series package includes the following parts and equipment. Ensure that these items are included in your package before using the unit.
PART NAMES Controller 1 1 DIP switches Set alarm hold function, key-lock function, and averaging function. 2 Sensor head connector GAIN 0 N(mA) ) MO MON(V HIGH 1 3 2 TIMING T BRIGH LITY STABU AUTO DARK GND TE REMO 24V DC IN RESE T R GND 4 Indicators TIMING: Lights during synchronous (timing) input. 4 LASE ZERO 3 ON LASER T TIMING 3 Sensitivity setting switch Changes the received light sensitivity according to the reflectance of the target. (➮ Refer to p.
CONNECTIONS 7 AUTO ZERO input Connecting this terminal to the GND terminal (5, 8, 0) resets the analog output to 0 V (12 mA). The input is a one-shot input. This section describes each terminal. Analog voltage output (V) Analog output 0V 13 14 0 MON (V) Analog current output (mA) 9 Alarm output (N.C.) The output contact opens when measurement is impossible due to an insufficient or excessive light quantity, or due to the target being out of the measuring range. The output is normally closed.
INPUT/OUTPUT CIRCUIT INSTALLATION This section describes the input/output circuit diagram of the controller. This section describes how to mount the controller and the sensor head and how to connect the cables. Input circuit (AUTO ZERO, Synchronous, and laser emission stop) 24 V IN 3 KΩ 470 Ω GND Controller The controller can be mounted to a DIN rail. When mounting or removing the controller, pull the claw at the bottom center in the direction of the arrow.
INSTALLATION OUTPUT CHARACTERISTICS AND LED INDICATOR Sensor head Adjust the distance between the sensor head and target by checking the sensor head’s LED operation indicator. Secure the sensor head using M3 screws through the two mounting holes indicated by the arrows in the figure. Limit the tightening torque to 0.2 Nm (2 kgf·cm) or less.
SETTING This section describes how to mount the sensor head according to the target. Border of different color or luster Correct Measuring distance Incorrect Displacement in a hole Correct Incorrect LK-011: Approx. 10 mm When measuring the thickness of a moving object, use the LK-011 at the reference distance as much as possible. This ensures the most reliable detection. Approx.
USING EACH FUNCTION AUTO ZERO This section describes each function to help you make effective use of the LK-3100 series. Relationship between the key-lock function and AUTO ZERO function AUTO ZERO function ➮ Refer to p.15 for the key-lock function. Resets the output voltage to 0 V at the desired point within the measuring range. Changing the zero position enables the output range to be set at either -10 to 0 V, or 0 to 10 V.
USING EACH FUNCTION SHIFT/SPAN Shift adjustment function ZERO RESET Span adjustment function Adjusts the analog value zero point using the UP/DOWN keys for shift adjustment. RESET Adjusts the analog value inclination using the UP/DOWN keys for span adjustment. Use the span adjustment when the sensor head is tilted or the target surface condition affects the analog output characteristics. 10.015 mm 10.015 mm 0.200 mm V V V Holding down the / keys to change the shift value faster.
USING EACH FUNCTION SENSITIVITY SETTING Sets an appropriate sensitivity according to the change in target surface condition. GAIN HIGH AUTO Example: Measurement of pin warpage In measuring the warp of moving connector pins, the reflectance of the pin and gap changes greatly, causing a change in the analog output in a short time period. In such a case, set the sensitivity setting switch to LOW and measure only pins that have a high reflectance. LOW Set the sensitivity to AUTO for normal use.
USING EACH FUNCTION DIP SWITCHES Alarm hold function Key-lock function • Setting DIP switch 1 to the upper position (HOLD) The sensor does not produce the 12 V (approx. 21 mA) analog output during alarm output (range over/light quantity alarm), but retains the analog output value just prior to the alarm output. This function is canceled when measurement is again possible.
USING EACH FUNCTION DIP SWITCHES Response speed selection function Set DIP switch 3 to select whether to output every measured value or the average of 8 measured values (moving average). Example: To cancel the influence by surface roughness, LOW is recommended. • DIP switch (HIGH) LOW HIGH 1 2 Analog output 3 • DIP switch (LOW) LOW: Outputs the value of the average of 8 measured values. Offers more stable detection when the luster of the target varies greatly. HIGH: Outputs every measured value.
USING EACH FUNCTION MEASUREMENT MODE SELECTION The LK-011 offers two measurement modes to be used according to the measurement conditions. ■ Mounting the sensor head for mirror-surface measurement Normal mode: Used to measure targets other than mirror-surfaced or transparent objects. The LK-011 is initially set to the normal mode. When the mirror-surface measurement mode is set, the sensor head should be tilted to receive the specular reflection.
USING EACH FUNCTION SAMPLING CYCLE SELECTION • When measuring a target that reflects a small amount of light, such as black rubber: Set a longer sampling cycle. Note: When a short sampling cycle is set for measuring a target that has low reflectance, detection may become unstable or an alarm output is produced due to the extremely small amount of light being received.
HINTS ON CORRECT USE ■ Noise interference (The sensor head is case-grounded.) CAUTION Isolate the sensor cable and extension cable(s) from high-tension lines or power lines, otherwise the sensor may malfunction or the laser diode may deteriorate due to noise interference. • If noise is present at the surface where the sensor head is mounted, install insulator between the mounting surface and the sensor head. • Earth-ground the frame grounding terminal.
INPUT CHARACTERISTICS Timing diagram Minimum input time Synchronous (timing) input Analog 12 V output 0V Laser emission stop input ON (CLOSED) OFF (OPEN) ON (CLOSED) A Sampling cycle 128 µs 256 µs 512 µs 2048 µs OFF (OPEN) Synchronous ON (CLOSED) (timing) input OFF (OPEN) AUTO ZERO input AUTO ZERO ON (CLOSED) OFF (OPEN) input ON (CLOSED) • Laser emission only starts approximately 3 seconds after the laser emission stop input terminal is connected.
SPECIFICATIONS Model Sensor head Controller Measurement mode Reference distance Measuring range Light source Normal 10 mm ±1 mm Wavelength Output Spot diameter Linearity 1. Repeatability 2. Analog output 3.
CHARACTERISTICS MUTUAL INTERFERENCE Angle characteristics Interference will occur only when the beam spot of another sensor is positioned inside of the shadowed area. Changes the span of the analog output when a white ceramic target is tilted by ±30° (Typical) Unit: mm Normal mode Analog voltage (V) A 20 mV 10 –10 mV B 9 10 11 Distance (mm) ±0.5 15 –10 A –30° +30° B Analog voltage (V) 10 mV 10 9 10 11 Distance (mm) –10 –30° +30° 22 ±1.6 15 10 3 7.
WARRANTIES AND DISCLAIMERS (1) KEYENCE warrants the Products to be free of defects in materials and workmanship for a period of one (1) year from the date of shipment. If any models or samples were shown to Buyer, such models or samples were used merely to illustrate the general type and quality of the Products and not to represent that the Products would necessarily conform to said models or samples.
DIMENSIONS Unit: mm ø15 Sensor head Controller LK-011 LK-3101 43 Extension cable (option) Cable length (m) Model 2 LK-C2 5 LK-C5 10 LK-C10 172 42.7 33 3 0 to 140° 500.0 ø5 17.7 140 110 4 x ø5 (mounting hole) 13 76 90 100 112 35.4 (60) 39.8 3 45° 2 x ø3.2 (mounting hole) 2010 24 7 9 to 11 7.
