User manual OMRON E3MC DATASHEET

[. . . ] Color sensor (LED type) E3MC E3MC RGB Color Sensor Discriminates Delicate Differences in Color. Features Double Indication ensuring high visibilty. · Conformity with the registered colors can be monitored at eight levels. (Detection level indicators) · Allows fine adjustment between fine or rough discrimination while monitoring the measured results. (Threshold level indicators) brightness of sensing objects. Capable of discriminating over 90 different colors. [. . . ] The threshold is set to 4. Locate the registered object at the detection point and press the TEACH button. 3. Threshold Adjustment (If Required) OUTPUT Sensor 1 2 CH- 3 OUT 4 LEVEL THRESHOLD BLIP TEACH SELECT Detection Level and Tolerance As the detected color becomes closer to the registered color (similar colors), the number of lit detection level indicators (green) increase. The control output will turn ON if the detection level (green) exceeds the threshold level (red) and turn OFF if the detection level does not exceed the threshold level. (For conformity output setting) Set the threshold to a higher level for highly-precise color discrimination or to a lower level to allow margins for discriminated colors (ignore minor tint differences, dirt retention or like). Detection Level Sensing object TEACH ADJ RUN ADJ Tolerance Operation indicator: ON Control output: ON Operation indicator: OFF Control output: OFF (Adjustment can be made without a sensing object) The bank selected in the ADJ mode or TEACH mode will become the bank for the RUN mode. Threshold value Threshold value Detection level E3MC A-155 E3MC peration OUTPUT For indicating detection level and threshold value for other channels LEVEL THRESHOLD 1 2 CH- 3 OUT 4 Press the SELECT button. For checking which channel is indicated OUTPUT OUTPUT TEACH SELECT TEACH ADJ RUN 1 2 CH- 3 OUT 4 LEVEL THRESHOLD BLIP 1 2 CH- 3 OUT 4 LEVEL THRESHOLD BLIP Detection is made in the RUN mode. The output ON/OFF status of each channel is displayed on the channel indicators. Double-displayed channels can be checked and selected by pressing the button. TEACH SELECT TEACH SELECT Press the TEACH button TEACH ADJ RUN TEACH ADJ RUN Displays the channel the detection level of which is currently indicated in (CH-OUT). (For three seconds) Displays the selected channel in (CHOUT) (for three seconds) and indicates the detection level and threshold value of the selected channel. Registered Color Selection (Bank Selection Input) 1-output Models Only In the RUN mode, bank selection can be made externally with the bank selection input 1 (yellow) and input 2 (green). The selected bank is indicated by the bank selection indicator. NPN (E3MC-A11/-X11/-Y11) Bank 1 2 3 4 Input 1 OPEN GND OPEN GND Input 2 OPEN OPEN GND GND PNP (E3MC-A41/-X41/-Y41) Bank 1 2 3 4 Input 1 OPEN Vcc OPEN Vcc Input 2 OPEN OPEN Vcc Vcc External synchronous input function The measurement results will be directly output to the control output if the input from the external synchronous input terminal (pink) is set to OFF. The output will hold the previous status if the input of the external synchronous input terminal is set to ON. External synchronous input is valid in RUN or ADJ mode. As for the 4-output models, this function applies to the output of all the channels. Sensing object ON Discrimination OFF result ON External synchronous input Control output Output on hold OFF ON OFF This status can be on hold by an external synchronous input. It will be released by setting the external synchronous input to OFF. Output on hold Same color Different color Same color Same color This status can be on hold so that unwanted color objects can be ignored while they are passing the sensing range. A-156 Standard Photoelectric Sensors Remote teaching (remote control function) Mode Setting When using remote teaching (remote control function), you must set the Sensor to mode B. Setting Method Apply power to the Sensor while pressing the SELECT DOWN button and TEACH button at the same time. TEACH SELECT The following is an example of ladder programming. 00000 00100 TIM000 00100 END TIM000 set value No. 1: 0003 No. 2: 0006 No. 3: 0009 No. 4: 00012 No. 5: 00015 Input: 00000 Output: 00100 Others: Work bits TIM000 #XXXX Checking Method Whether the E3MC is operating in mode A or B can be checked with the operation indicator after mode setting (indicated for 3 s) or in the TEACH mode. Mode A: Operation indicator is OFF. OUTPUT The following is an example of a timing chart of teaching after bank selection. Input detection 1. 5s Remote control input 0. 3s ON OFF Operation in bank 2. 0. 5s ON OFF Bank Sensing Teaching selecting. specified Teaching. Input detection An interval of 0. 6 min. 1. 5s 1 2 CH- 3 OUT 4 Mode B: Operation indicator is ON. LEVEL THRESHOLD Sensing restarts. 0. 3s OUTPUT 1 2 CH- 3 OUT 4 Answerback output LEVEL THRESHOLD in bank 1. 0. 3s 0. 5s Answer-back output with normal signal reception. Answer-back output with teaching OK. (No output if teaching fails. ) Note: 1 . The Sensor is set to mode A before shipment. The current mode selected does not change after the Sensor is turned OFF. [. . . ] Distance where 11 colors of standard sensing objects can be discriminated. As a typical example, 9 colors can be discriminated when 12 mm is set. The fiber to be inserted into the emitter is indicated with white lines. Insert the amplifier fiber into the lower emitter section. [. . . ]