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Technical content
Detects laminated or light-dispersing objects in stable operation without be- ing influenced by mirror reflection. Double indication of the detection level and threshold level allows easy grasp of the operating status and easy ad- justment. Automatically sets to the optimum threshold level while sensing objects are being conveyed and incorporates an auto-teaching function that discrim- inates between the mark and back- ground and turns ON when the mark is detected. IP67 watertight construction with M12 rotary connector High response speed of 50 s and half the size of OMRON's conventional models.
Applications
Dependably Detects Marks on Laminated Sheets The coaxial optical system ensures a long sensing distance and stable sensing characteristics over a wide angle range, even for objects that are distance-fluctuating or leaning at an angle, or for laminated objects with marks, which conventional models have difficulty in detecting Auto-Teaching An auto-teaching function automatically sets the threshold value upon a Remote Control input while the workpiece is moving. There is no need to position the mark at the optical spot. F502-EN2-04.book Seite 133 Dienstag, 26. Juli 2005 5:48 17
A-134 Standard Photoelectric Sensors
Ordering Information
Shape Connection method Setting distance Spot diameter Model NPN output PNP output Connector type1 1. Possible to switch between vertical or horizontal connection using the M12 rotary connector 1 x 4 mm E3M-VG11 E3M-VG16 4 x 1 mm E3M-VG21 E3M-VG26 Pre-wired 1 x 4 mm E3M-VG12 E3M-VG17 4 x 1 mm E3M-VG22 E3M-VG27 Shape Model Quantity Remarks E39-L131 1 E39-L132 1 For rear mounting Shape Type Cord type Model Single-end connector (Straight) 2 m 4-wire cord XS2F-D421-D80-A 5 m XS2F-D421-G80-A Single-end connector (L-shaped) 2 m XS2F-D422-D80-A 5 m XS2F-D422-G80-A 10+3 mm F502-EN2-04.book Seite 134 Dienstag, 26. Juli 2005 5:48 17
Item E3M-VG11 E3M-VG12 E3M-VG21 E3M-VG22 E3M-VG16 E3M-VG17 E3M-VG26 E3M-VG27 Sensing distance 10±3 mm Spot size (W x H) 1 x 4 mm 4 x 1 mm 1 x 4 mm 4 x 1 mm Light source (wave- length) Green LED (525 nm) Power supply voltage 10 to 30 VDC, ripple (p-p) 10% max. Current consumption 100 mA max. Control output Load power supply voltage: 30 VDC max. Load current: 100 mA max. (Residual voltage: 1.2 V max.) NPN open collector output type Load power supply voltage: 30 VDC max. Load current: 100 ma max. (Residual voltage: 2 V max.) PNP open collector output type Remote control input 1. Remote controll input and answer-back output share the same signal line. ON: Short-circuited to 0 or 1.5 V max. (with a flow current of 1 mA max.) OFF: Open or VCC - 1.5 V to VCC (with a leakage current of 0.1 mA max.) ON: VCC - 1.5 V to VCC (with an absorption current of 3 mA max.) OFF: Open or 1.5 V max. (with a leakage of 0.1 mA max.) Remote control output1 Load power supply voltage: 30 VDC max. Load current: 100 mA max. (Residual voltage: 1.2 V max.) NPN open collector output type Load power supply voltage: 30 VDC max. Load current: 100 ma max. (Residual voltage: 2 V max.) PNP open collector output type Bank selection Two banks selectable. Available for remo te control only. (Refer to Remote Control Function.) Circuit protection Protection from reversed power supply connection and load short-circuit Response time ON: 50 µs max. OFF: 70 µs max. Ambient illumination (on receiver lens) Incandescent lamp: 3,000 lx max. Sunlight: 10,000 lx max. Ambient temperature Operating: -20°C to 55°C/Storage: -30°C to 70°C (with no icing) Ambient humidity Operating: 35% to 85%/Storage: 35% to 95°C (with no condensation) Insulation resistance 20 M min. (at 500 VDC) Dielectric strength 1,000 VAC, 50/60Hz, 1 min. Vibration resistance 2. The Sensor withstands 0.75 mm double amplitude or 100 m/s² if the mounting bracket is attached to the sensor Destruction: 10 to 55 Hz, 1-mm double amplitude or 150 m/s2 for 2 hrs each in X, Y, and Z directions Shock resistance3 3. The Sensor withstands 300 m/s² if the mounting bracket is attached to the sensor. Destruction: 500 m/s2 3 times each in X, Y, and Z directions Degree of protection IEC60529 IP67 (with protective cover) Connection method Connector Pre-wired Connector Pre -wired Connector Pre-wired Connector Pre-wired Weight with package box Approx. 100 g Material Case: Polybutylene terephthalate Lens: Acrylic (PMMA) Others Instruction manual F502-EN2-04.book Seite 135 Dienstag, 26. Juli 2005 5:48 17
A-136 Standard Photoelectric Sensors Engineering Data Technical Guide Glossy Sensing Objects Incline the Sensor to detect glossy objects so that the Sensor will not be influenced by the mirror reflection of light and to ensure the stable sensing operation of the E3M-V. Standard Sensing Object (Color vs. Munsell) Japan Color Enterprises Standard Color Card 230 Sensing Distance vs. Incident Characteristics (Typical) E3M-VG1@ Angle vs. Incident Characteristics (X Direction) E3M-VG1@/VG2@ Angle vs. Incident Characteristics (Y Direction) E3M-VG1@/VG2@ Distance (mm) Angle (˚) Angle (˚) Incidence (%) Incidence (%) Incidence (%) Color Sensing Capacity E3M-VG@@ White Y ellow greenRed Y ellow red Y ellow Green Blue green Blue Purple Red purple Black White Red Y ellow red Y ellow Green yellow Green Black Red purple Purple Blue Blue green /K64 /K64 /K64/K64/K64/K64 /K64/K64 /K64 /K64 /K64 /K64/K64/K64/K64 /K64/K64 /K64/K64/K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64/K64/K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64/K64/K64/K64 /K64/K64 /K64/K64/K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64 /K64/K64 /K64 /K64 /K64 : Detectable ∆: Detectable but unstable X: Not detectable X X X /K64 /K64 X X Differences in Incident by Color Incidence (%) WhiteRed Y ellow red Y ellow Y ellow green Green Blue green Blue Purple Red purple Black Color Sensing object 5 to 155 5 to 155 Sensing object 11 standard colors Munsell color notation White N9.5 Red 4R, 4.5/12.0 Yellow red 4YR, 6.0/11.5 Yellow 5Y, 8.5/11.0 Yellow green 3GY, 6.5/10.0 Green 3G, 6.5/9.0 Blue green 5BG, 4.5/10.0 Blue 3PB, 5.0/10.0 Purple 7P, 5.0/10.0 Red purple 6RP, 4.5/12.5 Black N2.0 F502-EN2-04.book Seite 136 Dienstag, 26. Juli 2005 5:48 17
Operation Indicator (Orange) Lit when the output is ON. Detection Level Indicators (Green) Displays the detection level. SET Button Used for teaching and threshold adjustments. Threshold Indicators (Red) Displays the threshold level. Mode Selector Selects the mode. UP/DOWN Selector Increases the threshold value when set to UP . Decreases the threshold value when set to DOWN. Detection level indi- cators (green, 8 levels) Threshold inidcators (red, 13 levels) Threshold inidcators (red, 13 levels) Main circuit Main circuit Operation indicator (orange) Operation indicator (orange) Remote control input /Answer-back output Remote control input /Answer-back output Load Load Brown White Black Blue Load Load 10 to 30 VDC Control output Brown White Black Blue (See note.) (See note.) NPN (E3M-VG11, E3M-VG12, E3M-VG21, E3M-VG22) PNP (E3M-VG16, E3M-VG17, E3M-VG26, E3M-VG27) 10 to 30 VDC Connector Pin Arrangement 100 mA max. Detection level indi- cators (green, 8 levels) Control output F502-EN2-04.book Seite 137 Dienstag, 26. Juli 2005 5:48 17
A-138 Standard Photoelectric Sensors Adjustments Adjustment Steps 1. Install, wire, and turn ON the Photomicrosensor. 2. Perform teaching (mark registration). Refer to Mark Registration (Teaching). 3. Make fine adjustments of the threshold level if necessary. Refer to Threshold Level Adjustments on page A-139 . 4. Check that the mode selector is set to RUN. Mark Registration (Teaching) Refer to the following for ideal teaching. Refer to the following for each teaching method. Remote one- or two- point teaching is possible. Refer to Remote Control Function. One-point Teaching Note: By teaching on the base, reversed output as shown above (base: ON, mark: OFF) can be obtained. Two-point Teaching Note: Follow the above steps so that the output will be turned ON whenever the mark is detected. By taking the opposite steps, the output will be turned OFF whenever the mark is detected and turned ON whenever the base is detected. Application The base has a color pattern. The mark and base are clearly different in color. The base has no col- or pattern. The mark and base are slightly different in color. The base has no col- or pattern. Remote teaching with no po- sitioning is desired. ‚‚‚ One-point teaching Two-point teaching Auto-teaching The default level is set and the output is ON when the mark is detected. The threshold level is set between the color of the mark and base. The output is ON when the mark is detected. The threshold level is set between color of the mark and base. The output is ON when the mark (i.e., the color with shorter passing time) is de- tected. 1 Set the mode selector to TEACH.
2 Locate the mark to the sensing position and press the SET but-
ton. Then all the red threshold indicators are ON. 3 Set the mode selector to RUN. The output will be ON whenever the set mark is detected. Mark Sensor Base Push Red threshold indicators are ON. 1 Set the mode selector to TEACH. ton. All the red threshold indicators will turn ON.
3 If teaching is successfull, move the mark and press the SET
button at the base. If teaching is successfull, all the green detection level indica- tors are ON. If teaching is unsuccessfull, all the red threshold level indica- tor flash.
4 If teaching is successful, set the mode selector to RUN to com-
plete the teaching operation. If teaching is unsuccessful, restart from the above step 2. Mark Sensor Base Push Red threshold indicators are ON. Mark Sensor Push Teaching is OK Green detection level indicators are ON. Teaching is NG All the red threshold level indicators will flash if there is no difference in incident. Base F502-EN2-04.book Seite 138 Dienstag, 26. Juli 2005 5:48 17
- Check that the mode selector is set to either RUN or ADJUST. 2. Input a 0.9-s pulse signal into the remote control I/O terminal. 1 3. Auto-teaching starts when the mark is moved. When the mark passes six times, auto-teaching completes. If teaching is successful, answer-back output from the remote control I/O terminal will turn ON for 0.3 s. If teaching is unsuccessful, no answer-back signal will be output. Readjust using two-point teaching. (Teaching will be unsuccessful if there is no difference in incident between the mark and base.) 4. If the answer-back signal is ON, the whole teaching operation will be completed. The output will be turned ON whenever the mark (i.e., the color with shorter passing time) is detected. Note: Be sure to connect the E3M-V to the Programmable Controller as shown above. Precautions when Using Automatic Teaching Incorrect discrimination may be caused by automatic teaching in the following cases. Use one-point or two-point teaching in such cases. Color patterns exist in the base. Sensing objects change their positions. Sensing objects have protrusions or surface level differences. Threshold Level Adjustments It is possible to make fine adjustments of the threshold level after teaching. Such fine adjustments can be made remotely as well. Refer to Remote control Function (Bank Selection, Mark Registration, and Threshold Adjustments) on page A-140 . 1. Make sure that the input tolerance of each pulse is within ±0.1 s. Auto-teaching Remote control input/ Answer-back output Incident Auto-teaching Teaching starts Teaching completes and detection starts Answer-back Time Mark (shorter passing time): Output ON Optimal threshold level set Base: Output OFF Dummy sampling (1st mark) Sampling (5th mark) Time Example of Connection to Programmable Controller Sensor Remote control I/O I/O Unit Programmable Controller Output Input
1 Set the mode selector to ADJUST
Select the upper or lower threshold selector. Whenever the SET button is pressed, the threshold level will move. Two indicators will be lit together when the threshold level is an even level. 3 After setting the level, set the mode selector to RUN. The threshold level increases. The threshold level decreases. Lower threshold limit Press Upper threshold limit Threshold indicators Threshold level F502-EN2-04.book Seite 139 Dienstag, 26. Juli 2005 5:48 17
A-140 Standard Photoelectric Sensors Detection Level Indicator Detection Level Indicator The control output of the E3M-V will be turned ON if the detection lev- el exceeds the threshold level. The indication of the detection level varies with the teaching method. One-point Teaching The upper and lower threshold values are set on the basis of the mark and the detection level indicators indicate the degree of color confor- mity to the mark's color. Two-point or Auto-teaching A single threshold value is set between the mark (registered first) and the base (registered next). The detection level indicators indicate the tolerance between the mark and base. Remote control Function (Bank Selection, Mark Registration, and Threshold Adjustments) Under Run Mode or Adjust Mode The input of any of the signals listed in the following table into the re- mote control I/O terminal allows remote control of the E3M-V. When the signal is accepted, answer-back output will be turned ON for 0.3 s. Only in the case of one-point teaching, however, can the signal be manually input, provided that the input is ON for 1.5 s or more. Timing Chart Note: If Signals are sent continuously, make sure that there is an interval of 2.5 s between signal inputs as shown above. Control Signals Note: The input error of each signal pulse must be within ± 0.1 s Ladder Program Example Control signals are input by a ladder program as shown below. Detection level Output OFF Output ON Threshold value Mark Output OFF Detection level indicators Operation indicator Threshold value Threshold value Detection level Output OFF Output ON Threshold value Mark Detection level indicators Operation indicator Threshold value Base Input signal Answer-back output: ON only when the process completes normally. Detection restartsSetting change Input discrimination (1.8 s) 2.5 s min. Next input signal 2.0 s 0.3 s Remote control I/O Sensor operation No. Control signal Function
1 Bank 1 is selected (operation
mode) Bank 2 is selected (operation indicator ON in TEACH mode) Auto-teaching
4 Two-point teaching (1st and
2nd) One-point teaching (or input for 1.5 s min.) Threshold level 1 is selected. Threshold level 3 is selected. Threshold level 5 is selected. Threshold level 7 is selected. Threshold level 9 is selected. Threshold level 11 is selected. Threshold level 13 is selected. Input: 00000 Output: 00100 Others: IR bits TIM000, TIM001, and TIM002 set values F502-EN2-04.book Seite 140 Dienstag, 26. Juli 2005 5:48 17
Note: All units are in millimeters unless otherwise indicated. Mark Sensors Eight detection level indicators Seven level threshold indicators Operation indicator M2.6 nut M12 Connector M2.6 10-dia. lens Two, 4.5-dia. mounting holes Mounting Holes Two, M4 Optical axis 47.8 45 Two, 4.5 dia. mounting holes 67.8 Vinyl-insulated round cable with three conductors, 6 dia. (17 x 0.16 dia.); standard length: 2 m Connector Models Pre-Wired Models F502-EN2-04.book Seite 141 Dienstag, 26. Juli 2005 5:48 17
A-142 Standard Photoelectric Sensors Accessories (Order Separately) Mounting Brackets E39-L131 E39-L132 Two, 4.2 dia. 4.2 dia. Material: Stainless steel (SUS304) Material: Stainless steel (SUS304) 905+15 905+15 F502-EN2-04.book Seite 142 Dienstag, 26. Juli 2005 5:48 17
Classification Wire color Connector pin No. Use DC Brown 1 Power supply (+V) --- 2 --- Blue 3 Power supply (0V) Black 4 Output Single-end Connector (Straight Model) Single-end Connector (L-shaped Model) XS2F-D422-D80-A (L=2 m) XS2F-D422-G80-A (L=5 m) 5 dia. 14.9 dia. 6 dia. 5 dia. 6 dia. XS2F-D421-D80-A (L=2 m) XS2F-D421-G80-A (L=5 m) Pin No. Wire colors DC/AC Brown White Blue Black Note: 1 .pin No. 2 is not used. 2 .For details, refer to the Sensor I/O Connectors Catalog (X065) F502-EN2-04.book Seite 143 Dienstag, 26. Juli 2005 5:48 17
A-144 Standard Photoelectric Sensors Precautions Observe the following precautions to ensure safety. Do not use the Sensor in locations subject to flammable or explo- sive gases. Do not use the Sensor in water or conductive solution. Do not disassemble, repair, or modify the Sensor. Use the Sensor under proper power supply specifications such as the use of AC or DC power supply. Do not apply any voltage or current exceeding the rated level. Be careful with the power supply polarities and wire correctly. Connect the loads correctly. Do not short-circuit both ends of loads. Correct Use Installation Power Reset Time Since the E3M-V is ready to detect objects from 100 ms max. after the E3M-V is turned ON, operate the remaining devices 100 ms after the Sensor is turned ON. If power is supplied to the E3M-V and the load independently, be sure to turn on the E3M-V first. Power OFF The E3M-V may output a single pulse when the control power supply is turned OFF. If the E3M-V is connected to a timer or counter to which power is supplied from an independent power supply, the E3M- V will be more likely to output a single pulse when the control power supply is turned OFF. Therefore, supply power to the timer or counter from the same power supply for the E3M-V. Power Supply Type No full-wave or half-wave rectified power supplies can be connected to the E3M-V. Power Supply Connection Be sure to ground the FG (frame ground) and G (ground) terminals if a switching regulator is connected to the E3M-V, otherwise the E3M- V may malfunction due to the switching noise of the switching regula- tor. Wiring Cable The cable can be extended up to 100 m provided that the thickness of the cable is 0.3 mm2 minimum. Repeated Cable Bending The cable must not be bent repeatedly. High-tension Lines The power supply lines of the Sensor must not be wired alongside power lines or high-tension lines in the same conduit, otherwise the Sensor may become damaged or malfunction due to induction noise that may be generated from the power lines or high-tension lines. Route the lines separately or in a single conduit. Cable Pulling Force Do not pull cables with pulling forces exceeding 50N. Mounting Screw Tightening Make sure that the casing is tightened to a maximum torque of 1.2 N o m. Mounting Direction When Sensors are mounted to face each other, make sure to adjust the optical axes so that the Sensors will not be mutually interfered. Others EEPROM Write Error An EEPROM error may result if power supply to the Sensor fails or the Sensor is influenced by static noise, in which case the threshold level indicators will flash. Perform the teaching and threshold level setting of the E3M-V again. M12 Metal Connector Make sure to connect or disconnect the metal connector after turning off the E3M-V. Make sure to hold the connector cover when connecting or discon- necting the metal connector. Tighten the metal connector securely by hand. Do not use any tool, such as pliers, otherwise the metal connector may be damaged. If the metal connector is not tightened securely, the metal connector may be disconnected by vibration and the proper degree of protection of the E3M-V may not be maintained. In the interest of product improvement, specifications are subject to change without notice. ALL DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters into inches, multiply by 0.03937. To convert grams into ounces, multiply by 0.03527. Cat. No. E280-E2-01A-X F502-EN2-04.book Seite 144 Dienstag, 26. Juli 2005 5:48 17