MAIN MENU PRODUCTS APPLICATIONS INDEX SELECTION GUIDE Double-fed Metal Description Plate Detectors Detects metal plates with various thickness A unique detection system enables accurate detection of double-fed metal plates, regardless of target thickness. DD Series sensors reliably detect even warped or vibrating targets (30 mm 1.18" max. allowable vibration). DD Series DD Series Features Easy adjustment using the bar-graph indicatorlDetects double-fed metal plates Output levels can be confirmed using the quick-response bar graphlCompact sensor head and amplifier indicator. Numeric switches ensure accurate sensitivity adjustment. lDetects targets as small as 30 x 30 mm 1.18" lBuilt-in bar graph indicator for output level Part Names and Functions DD-860 Smallest detectable object 30 x 30 mm (1.18") Bar-graph output level Separation distance indicator 30 mm (1.18") Power indicator Reset button Plate-thickness selector Sensitivity switch adjustment switch DD-960 Bar-graph output level indicator Reset button Power indicator Sensitivity Mode-selector switch adjustment switch 336 MAIN MENU PRODUCTS APPLICATIONS INDEX SELECTION GUIDE Double-fed Metal Plate Detectors DD Applications Detection of double-fed lead Detection of overlapped pipes Detection of aluminum foil quantity Detection from target edge frames Specifications Type 2 head type 1 head type Shape (Sensor head) Standard Compact Standard Compact Sensor head DH-220 DH-214 DH-320 DH-314 Model Amplifier DD-860 DD-960 Detection method Detection with a target between the transmitter and the receiver Detection from the target edge T/R T/R T/R separation: separation: separation: 30 mm 1.18" 20 mm 0.79" 15 mm 0.59" max. max. max. 0.04 mm 0.002" 0.1mm 0.004" 0.1 mm 0.004" 1. 1. MODE (A) Steel to Steel to to Steel plate 4.5 mm 0.18" 1.2mm 0.05" 1.6 mm 0.06" MODE (A) thickness: 0.02 mm 0.001" Steel plate thickness: 0.1 0.1 0.004" to Alumin- Alumin- 0.05 mm 0.002" to 0.004" to 2.3 mm 0.09" 1.6 mm 0.06" um um to 5.0 mm 0.20" 10 mm 0.39" Plate thickness MODE (B) MODE (B) 0.01 mm 0.05 mm 0.002" Steel plate thickness: 0.1 Steel plate Copper 0.0003" to Copper to 5.0 mm 0.20" 0.004" to 10 mm 0.39" thickness: 5.0 mm 0.20" 0.1 0.004" to 0.03 mm 0.001" 3.2 mm 0.13" 0.05 mm 0.002" Brass to Brass to 5.0 mm 0.20" 5.0 mm 0.20" 0.1 mm 0.004" Stainle- Stainle- 0.2 mm 0.008" to ss steel ss steel to 5.0 mm 0.20" 5.0 mm 0.20" Maximum detecting Maximum detecting Maximum separation 30 mm 1.18" 20 mm 0.79" distance 4 mm distance 10 mm 0.39" 0.16" MODE MODE (A) (B) Detection 30 mm 1.18" max. 5 mm 5 mm with Allowable vibration (100 x 100 mm 3.94" 20 mm 0.79" max. (50 x 50 mm 1.97") 0.20" 0.20" ± 1 mm 0.04" max. adjustment t=3.2 mm 0.13" max.) Detection 3 mm 5 mm without 0.12" 0.20" adjustment Detecting surface must be 30 x 30 mm 1.18" 50 x 50 mm 1.97" (T-to-R Smallest detectable 30 x 30 mm 1.18" (T-to-R distance: covered with the target (10 x 10 mm 0.39" distance: 30 mm 1.18" object 15 mm 0.59" Vibration: ± 4 mm 0.16") edge with at least 100 mm Vibration: ± 0.5 mm Vibration: ± 4 mm 0.16") 3.94" x 100 mm 3.94". 0.02" max.) NPN: 100mA (40 V) max., Residual voltage: 1 V max. Control 1. output Relay output SPDT: 250 VAC, 2 A (resistive load) Output 3ms Response time5) 0 ms (selectable: 5 ms)5) 0ms(selectable:5ms3ms(selectable:30ms (selectable:30ms) 115/230VAC±15%, 115/230VAC±15%,115/230VAC± Powersupplyvoltage 115/230VAC±15%,50/60Hz 50/60Hz 50/60Hz15%,50/60Hz Powerconsumption1.0VACmax.1. 0VACmax 1.0VACmax10VACmax Ambienttemperature S°ensorhead:-10to+60C°,Amplifier:0to+50C SensorheadAg pprox.300gAg pprox.135 Agpprox.355Approx.365 Weight AmplifierAg pprox.835gAg pprox.835 Agpprox.825Approx.825 1. NPN output can easily be converted to PNP output by connecting the optional OP-5148 PNP output converter. 337 MAIN MENU PRODUCTS APPLICATIONS INDEX SELECTION GUIDE Double-fed Metal Plate Detectors DD Connections RT DD-860 DD-960 Shield Shield NPN Shield NPN output 0 V White Red White Red output 0 V White Red Shield Black White 16 15 14 13 12 11 10 9 16 15 14 13 12 11 10 9 123 4 5 6 7 8 123 4 5 6 7 8 N.O. N.C. COM 115 N.O. N.C. COM 115 VAC Relay output VAC Relay output 230 VAC Output selection input 230 VAC Output selection input Open: Latch output Open: Latch output Short-circuited: One-shot output Short-circuited: One-shot output Adjustment DD-860 (2 head type) DD-960 (1 head type) Set the mode selector switch according to the SET ADJ. detecting method. SET: Plate thickness selector Sensor head and target 200 Mode Detecting method ADJ: Sensitivity adjustment selector positions at adjustment Detection from upper or lower side of Target target MODE (A) 1.Choose the thickness range that matches the plate Adjust the sensor with the target thickness using SET switch. covering half of the detecting surface. Scale/ 1 2 3 4 5 6 Detection from the Material Target target edge 4.5 2.3 1.2 0.5 0.1 0.08 0.18" 0.09" 0.05" 0.02" 0.004" 0.003" Steel 0.39" MODE to 2.3 to 1.2 to 0.5 to 0.1 to 0.08 to 0.04 10 mm max. (B) 0.09" 0.05" 0.02" 0.004" 0.003" 0.002" Adjust the sensor with the target 10 5.0 2.0 1.2 0.5 center-aligned with the detecting 10 0.39" 0.20" 0.08" 0.05" 0.02" surface. Aluminum 0.39" to 5.0 to 2.0 to 1.2 to 0.5 to 0.02 0.20" 0.08" 0.05" 0.02" 0.0008" 5.0 Detection without re-adjustment even if target size Stainless 0.20" — — ——— has changed steel to0.1 0.004" ADJ 5.0 2.0 1.2 5.0 5.0 0.20" 0.08" 0.05" 0.02" Copper — 0.20" to2.0to1.2to0.5to0.1 MODE A 25 0.08" 0.05" 0.02"0.004" MODE B 5.0 2.0 0.5 0.20" 0.08" 0.02" Brass ——— to2.0to0.5to0.5 0.08" 0.02"0.001" 1. Place the thinnest target as close to the detecting 2.Place a target between surface as vibration amplitude allows. Increment the the transmitter and 1.97" sensitivity adjustment switch (ADJ) from “00” until 1.97" receiver. Increment the 50 mm or more 50 mm or more the red detection indicator turns ON. sensitivity adjustment switch (ADJ) from “00” 2. Place two of the thickest targets as far from the until the red detection detecting surface as vibration amplitude allows. indicator turns OFF. Decrement the level adjustment switch until the red detection indicator turns OFF. 3.Place two target plates between the transmitter and receiver. Increment the sensitivity adjustment switch 3. Set the sensitivity adjustment switch halfway until the detection indicator turns OFF. between the values in steps 1 and 2. 4.Set the sensitivity adjustment switch halfway between the values in steps 2 and 3. 338 MAIN MENU PRODUCTS APPLICATIONS INDEX SELECTION GUIDE Double-fed Metal Plate Detectors DD Hints on Correct Use DD-960 Obtaining the response time (DD-860) If there is heavy noise interference, switch the response Place two target plates between the transmitter and time to 30 ms. receiver and measure the distance that the plates travel (The response time has been factory set to 3 ms.) from the start of detection to the end of detection. Travel speed v Target Target travel l When using targets with finished surfaces (e.g. zinc- Response time (T) = direction v Detection plated), contact KEYENCE for further information. Detection end start Distance l Surrounding metal Response time (T) Response time selection For information on the influence of surrounding metals, 50 ms or more 50 ms contact KEYENCE. 5 ms to 50 ms 5 ms Sensor cable Response time selection When a power line is present near the sensor cable, use a DD-860 separate metallic-conduit tube for the sensor cable to Response time can be decreased from the factory-set 50 prevent surge voltage and noise interference causing ms down to 5 ms for detection of minute targets and sensor malfunction. To extend the sensor cable, use the rapidly moving targets. optional extension cable. The cable extension length is limited to within 20 m 65.6'. Open the cover using a flat blade Mount the cover by screwdriver. pushing it to the front panel side using a screwdriver. Dimensions Unit: mm Inch Sensor head (2 head type) (1 head type) DH-220 DH-214 DH-320 DH-314 ş0.20" 2, ş5 hole 2 x ş4.5 ş0.18" Spot facing: 8 x 10, 0.31" x 0.39" mounting hole Depth: 17 0.67" P0.04" M14 X P1 P0.04" Across-flats: 19, 0.75" M12 X P1 26 1.023" 0.98" 25 Across-flats: 19, 0.75" Thickness: 3.5 0.14" ş5 ş0.20" Thickness: 3.5 0.14" 2-core shield ş3.2 ş.13" ş8 ş0.31" 1.26" 32 7 0.28" 2-core shield ş0.31" ş23 ş8 2-core shield x 2 70 ş0.91" 110 2-core shield x 2 2.76" 4.33" Detecting surface 80 3.15" 0.98" 0.59" 90 0.71" 15 25 22 0.87" 3.54" Detecting surface 18 7 0.28" 0.91" 23 8.5 0.33" 0.12" 3 Amplifier When mounting the terminal cover (optional OP-048) DD-860/960 2 0.08" (Common to DD-860/960) 4-slot (Note) 5 0.20" (For mounting) 4 0.16" 4.13" 140 104 5.51 114 105 4.09" 4.49" 3.39" 3.66" 3.86" 3.90" 86 93 99 98 98 99 3.86" 3.90" 339