RGB Digital Fiberoptic Sensors CZ-K Series Features RGB three-light source Wide detection range of 70 ±20 mm 2.75" ±0.78" High-speed response of 300 µs Water-resistant sensor head IP-67 rated Detecting Distance Long detection distance 70 ± 20 mm (2.75" ± 0.78") Small beam spot 16 ± 4 mm (0.63" ± 0.16") Description A revolutionary detection method ensures the highest stability The CZ-K Series is a technological breakthrough in photoelectric sensors. Detection is based on RGB color components, a superior method to the conventional light quantity receiving method. Long distance and wide-range detection The CZ-K Series is mounted at a distance from the target enabling accurate detection of vibrating targets. The sensor position does not need adjusting even when the target size changes. 70 2.76" ± 20 mm 0.79" Even Vibrating Targets -20 mm --0.79" +20 mm +0.79" 1-mm 0.04" beam spot model available The CZ-41 features a beam spot diameter of 1 mm 0.04" at a distance of 16 mm. Even minute marks can be reliably detected. One press of a button automatically sets the optimal sensitivity To set sensitivity, simply push the SET button once. Workpieces can now be accurately detected. The CZ-K Series recognizes color components instantly and automatically sets the optimal sensitivity (one-point tuning). Eight-color registration and external tuning functions The CZ-K Series can register eight setting values in advance and switches them based on external signals. In addition, the CZ-K Series features an external tuning function that allows sensitivity settings to be performed remotely. These functions enable smooth product changeover. 170
Applications RGB Digital Fiberoptic Sensors CZ-K Ridge detection on cans Detection of glue on cardboard Detection of defective marks on PC boards Specifications Fiber unit Type Long detection distance Reflective Detection of mark on tubes Small beam spot Model CZ-40 CZ-41 Detection range 70 ±20 mm 2.76" ± 0.79" 16 ±4 mm 0.63" ±0.16" Smallest spot diameter 6 mm 0.24" dia. 1 mm 0.04" dia. Minimum bend radius R 25 mm 0.98" R 15 mm 0.59" Enclosure rating IP-67 IP-67 Ambient temperature - 40 to +70 C - 40 to +70 C F iber length 2 m (free-cut) 6.6' 2 m (free-cut) 6.6' Housing material Weight Polyarylate Approx. 27 g Polyarylate Approx. 27 g Amplifier unit Model Light source Response time Indicators Error indication Calibration method Tolerance value adjustment Differentiation mode Timer function Output selection External synchronization input External calibration input Registered color selection Control output Protection circuit Power supply Current consumption Ambient light. A mbient temperature Housing material W eight (including 2-m NPN CZ-K1 PNP Output: Red LED, CZ-K1P Red LED, Green LED, LED 300 µs/1 ms (switch-selectable) Calibration: Orange LED, External synchronization Matching rate/received light intensity: LCD (Red/Green) input: Green LED, Excess light intensity, insufficient light intensity, insufficient color difference 1-point/2-point calibration (switch-selectable) Numerical value setting on digital display C mode/c + I mode/i mode (switch-selectable) OFF-delay timer (40 ms)/timer OFF (switch-selectable) Match output: Turns on when target color matches registered color. Mismatch output: Turns on when target color is different from registered color. (switch-selectable) Non-voltage input, Response speed: 500 µs max. Non-voltage input, Input response time: 20 ms min. 8-bank selection (By external input or key operation), Non-voltage input, Input response time: 20 ms min. NPN: 4DC max. (100 ma max.), Residual voltage: 1. max. Reverse-polarity protection (power supply), overcurrent protection (output), surge absorber (output) 12 to 24 VDC ±10% 75 ma max. Incandescent lamp: 5,000 lux max., - 10 to +5 C 1 5 6.6' cable) Polycarbonate Approx. 115 g Sunlight: 10,000 lux max. 1. When several units are connected, the acceptable ambient temperature varies depending on the conditions given below. To connect several units, be sure to mount them to a DIN rail (metallic plate). Ensure that the output current is 20 ma max. When 3 to 10 units are connected: -10 to +50 C When 11 to 16 units are connected: -10 to +45 C 171
CZ-K MAIN MENU PRODUCTS APPLICATIONS INDEX SELECTION GUIDE RGB Digital Fiberoptic Sensors Part Names 1 6 7 DIP switch 8 11 12 3 9 13 1. DIP switch Switch various settings 2 4 5 2. Timer selection switch Select timer-off or 40-ms off-delay 3. Output indicator 4. External synchronous input indicator 5. Tuning display light 6. UP/DOWN key Adjustment of setting value 7. LCD display monitor Displays matching rate, received light quantity, and setting value Functions 10 8. MODE selection switch Switching settings value and present value 9. SET button Setting sensitivity 10. Output selection switch N.O. matching output N.C. non-matching output 11. Detection mode switch Fine (high accuracy) mode HSPD (high speed) mode 12. Calibration mode switch One-point or two-point tuning 13. Differentiation mode switch (C/C+I/I) Advantages of RGB color component detection Conventional receiving light quantity methods have inherent limitations such as limited differentiation capability and the inability to compensate for fluctuations in target distance. The RGB color component detection method eliminates these limitations. It is an extremely stable detection method that can detect colors even in rough mounting conditions. Differentiation ability Conventional method: Detection based on light quantity received Received light quantity CZ-K Series method: Detection based on RGB color components ON ON ON OFF Vibration resistance Differentiation cannot be performed as there is no change in the quantity of light received. Received light quantity Threshold Extremely accurate differentiation can be performed based on RGB color component detection. ON OFF Fluctuations in distance change the received light quantity. ON ON The accuracy is not effected by fluctuations in target distance. Built-in highly accurate triple 12-bit A/D converter The received light quantity of each of the three color components: red, blue, and green is converted to 12-bits of data. The CZ-K Series employs a high resolution arithmetic method, tops in the industry, to calculate the combined received light quantity as 36-bit data. Stability is significantly enhanced. High-speed response of 300 µs The CZ-K Series has a high-speed response of 300 µs. For example, a 1-mm mark can be detected on a sheet being fed at 3.3 m/s at HSPD mode. (HSPD = high speed response mode time) 172
RGB Digital Fiberoptic Sensors CZ-K Three modes provide all methods of differentiation The CZ-K Series has three modes that differentiate RGB color components and received light quantity. These correspond to methods of differentiation. C mode: Color components C+I mode: Color components + received light quantity I mode: Received light quantity Timing input function This function holds sensor output according to an external input signal. This is convenient when you want to extend an output result. 1-line connection system PS-T2 Photoelectric sensor FS-T2 Fiberoptic sensor CZ-K1 Built-in self-stabilizer The self-stabilizer monitors quantity fluctuations of the LED emitters due to temperature changes or aging, and automatically keeps transmitted light quantity constant. Stable detection is maintained indefinitely. DC 1 2 3 4 5 OUT Current is supplied through a connector on the side of the body. Connections NPN CZ-K1 Brown 100 ma max. Black Load Pink Orange/purple Yellow/purple Green/purple 12 to 24 VDC 5 to 4DC External calibration External synchronization input External bank selection 1 External bank selection 2 External bank selection 3 PNP CZ-K1P Brown 12 to 24 VDC Pink External calibration External synchronization Orange/purple input External bank selection 1 Yellow/purple External bank selection 2 Green/purple External bank selection 3 100 ma max. Black Load Input/Output Circuits Output circuit NPN CZ-K1 Photoelectric sensor main circuit Overcurrent protection Brown 12 to 24 Black VDC Load 5 to 40 100 ma max. VDC PNP CZ-K1P Photoelectric sensor main circuit Overcurrent protection Brown 100 ma max. Black Load 12 to 24 VDC Input circuit External calibration input External synchronization input External bank selection input 1 to 3 Photoelectric sensor main circuit +5 V -5 V Pink Orange/purple Yellow/purple Green/purple Short-circuit current: Approx. 1 ma PLC, etc. External calibration input External synchronization input External bank selection input 1 to 3 Photoelectric sensor main circuit Pink Orange/purple Yellow/purple Green/purple Short-circuit current: Approx. 1 ma PLC, etc. 12 to 24 VDC 173
CZ-K MAIN MENU PRODUCTS APPLICATIONS INDEX SELECTION GUIDE RGB Digital Fiberoptic Sensors Setting Each Mode Differentiation mode setting (Using DIP switches 1 and 2) Change the setting according to the detection conditions such as the target color or received light intensity. Mode C (Color) C + I (Color and intensity) I (Intensity) Switch 1 2 1 2 1 2 Description Detects color using RGB color components. Detects color using RGB color components and received light intensity. Detects color using received light intensity. LCD display indication Current value (Matching rate display) MODE Setting value Press the button once. The setting value flashes on and off. Matching rate display Displays the matching degree (matching rate) of the color of the currently detected target to the reference color registered during calibration. Setting value display Displays the threshold value (criteria) of the matching rate. 1-point/2-point calibration selection (Using DIP switch 3) Change the calibration method. Mode 1-P (1-point calibration) 2-P (2-point calibration) Switch 3 3 Description Detects one specified color. (The sensitivity is automatically set to detect only the one color selected during calibration.) Differentiates two specified colors. (The sensitivity is automatically set to the optimal value to differentiate the two colors selected during calibration.) Sensitivity adjustment The tolerance of the detection can be adjusted. 1. Press the MODE button to show the setting value. DRY. 1 2 3 4 OUT TIM SET OFF N.C N.O MODE SET Operating procedure for using C or C + I mode Setting sensitivity 1-point calibration (Detection of one specified color) Place a target of the reference color in the detection area of the fiber unit. Press the SET button and then release it. The calibration indicator illuminates momentarily and the reference color is saved. 2. Press the UP/DOWN button to change the setting value. A higher value means precise detection. Press Press A lower value means rough detection. 2-point calibration (Differentiation of two colors) 1.Place a target of the reference color in the detection area of the fiber unit. Press the SET button and then release it. The calibration indicator illuminates and the reference color is saved. Narrow tolerance range Wide tolerance range 2.Place a target of the color to be differentiated in the detection area. Press the SET button and then release it. The calibration indicator goes off. The CZ-K1 Series sets the optimal sensitivity to differentiate the two colors. 174
RGB Digital Fiberoptic Sensors CZ-K Characteristics Distance characteristics (Typical) Distance at which point two colors are determined to be the same during a standard distance setting. 250 CZ-40 9.84" 50 CZ-41 1.97" Detecting distance (mm) 200 150 100 50 7.87" 5.91" 3.94" 1.97" Detecting distance (mm) 40 30 20 10 1.57" 1.18" 0.79" 0.39" 0 White Red Yellowish orange Yellow Yellowish green Green Bluish green Bluish purple Reddish purple White Red Yellowish orange Yellow Yellowish green Green Bluish green Bluish purple Reddish purple Angle characteristics (Typical) Matching rate for angle during white paper setting CZ-40 1000 Coincidence degree 995 990 985 980 975 970-60 -40-20 0 20 40 60 Gradient ( ) Hints on Correct Use A detection error may occur when the target is subjected to direct or reflected light from high-frequency lighting equipment such as an inverter fluorescent lamp. In this case, place a light shield plate around the fiber unit or change its location. When any of the external inputs (calibration, synchronization or bank selection) are not used, cut the appropriate input cables (pink, purple, orange/purple, yellow/purple or green/purple) at the root or connect them to the + terminal of the power supply. The cable should not be extended more than 100 m. 328.1' (To connect several units, contact Keyence for further information.) Do not use the CZ-K1 outdoors. Even when the same color is detected, the displayed value may vary depending on the characteristics of each amplifier, the length of the fiber cable and the location. If there are several colors in a single beam spot, the CZ-K1 determines the color by averaging those colors. Therefore, it may produce an output even though the color is different from the registered color. When detecting a metal surface or glossy target When a target has a metal or 10 to 15 glossy surface, the calibration/ differentiation may fail. To detect such a target, tilt the fiber unit by approximately 10 to 15 degrees. 175
CZ-K MAIN MENU PRODUCTS APPLICATIONS INDEX SELECTION GUIDE RGB Digital Fiberoptic Sensors Target movement and fiber unit orientation To stabilize the sensor output at a border, mount the fiber unit parallel to the border line as much as possible. Simplified operation label for CZ-K1 Series (attached to the CZ-K1) A convenient simplified operation label is attached. Please apply it close to the sensor. Incorrect Correct Button Names DIP switch ON 1234 CZ-K1 Quick Reference [ UP/DOWN button [Fine sensitivity adjustment] MODE SET Mode button M [Calling preset value] Display Switching Matching rate display [In C/C+I mode] : Briefly press the button.] Using button M M Fine sensitivity adjustment Press Preset value display SET button S [Sensitivity setting] Precise Press Rough Sensitivity Setting Using button S Error display Target movement direction Target movement direction 1-point calibration (DIP switch 3: OFF) Received light intensity is too low. With a target in place, S. 2-point calibration (DIP switch 3: ON) Received light intensity is too high. With a target in place, S, and * In I mode, button operation is the same as that with the target removed, S. of the FS-V1. CZ Quick Reference Dimensions CZ-K1/K1P When mounted to DIN rail Brown, blue, ø5.2 X Black, Pink, : 0.45m 2 ø0.20" Orange/purple, green/purple, yellow/purple: 0.25m 2 Cable length: 2m 6.6' When mounting bracket is attached (attached to CZ-K1/K1P amplifier) 1.1 0.04" Unit: mm Inch 78 3.07" 0.16" 4 0.26" 6.7 6.5 0.26" 24 0.94" 0.04" 0.23" 1.1 5.8 (33) 28.5 (1.30") 1.12" 8.4 35.4 0.33" 1.39" 53.5 24 min. 2.11" 0.94" (12.7) (0.50") 36.5 1.44" 0.20" 5 11.6 0.46" 18.5 15 2-ø3.2 0.73" 0.59" ø0.13" 22 0.87" 2-(4.4 X 3.4) (0.17" X 0.13") SUS304 24 min. 0.94" Amplifier mounting bracket (accessory) 16 0.63" 80.31 " 0.59" 15 1.12" 28.5 CZ-40 long detection distance sensor head 6.3 0.25" 13.2 0.52" 25.5 1.00" Slot (Note) ø3.3 ø0.13" (Mounting hole) ø2.2 X 2 ø0.09" CZ-41 small-beam-spot sensor head 6.3 0.25" 13.3 0.52" 27 28.5 1.12" 1.06" 2-ø3.3 ø0.13" ø2.2 X 2 (Mounting hole) ø0.09 13 0.51" 14 11.5 0.55" 0.45" 28 1.10" 33 1.30" 17.5 11.5 13 0.69" 0.45" 0.51" 2000 32 1.26" 78.74" 37 (Free-cut) 1.46" 2000 78.74" (Free-cut) 0.5 11.5 (Note) Detail of slot 0.02" 0.45" 176
RGB Digital Fiberoptic Sensors CZ-K Unit: mm Inch Mounting bracket (attached to CZ-40/41) When mounting bracket is attached to CZ-40 3.6 9.5 0.14" 0.37" 8 5 0.20" 0.31" 3.5 0.14" 4 0.16" 3.5 0.14" Detail of slot 2 X M3 screw 6 0.24" 11.517.5 0.45" 0.69" t=1.5 0.06" SUS304 11.5 0.45" 18 0.71" 33 1.30" 45 1.77" The sensor head angle can be changed by a maximum of 45 degrees upward and downward. 3.6 11.5 0.14" 0.45" 18.7 0.74" 14.5 0.57" t=1.2 0.05" SUS304 (32) (1.26") 177