User manual OMRON F3EM DATASHEET

[. . . ] Models with RS485 serial output are available. Contact your OMRON representative. Lightcurtain accessories Shape Type Laser alignment kit Comment snap-on Laser beam generator and level Order Code F39-TGR-LLK2-SB Protective tube for F3ET-_ -150 for F3ET-_ -300 for F3ET-_ -600 for F3ET-_ -900 F3ET-IP150 F3ET-IP300 F3ET-IP600 F3ET-IP900 F3EM Measuring lightcurtain in robust aluminium housing 1 Rating/Specifications Item Sensing distance Vertical measurement range Minimum detectable object size Pitch Control Analog models output Serial models Response time Light source (wave length) Power supply voltage Ambient temperature Degree of protection Dimensions (see also page 4) Material Case Cover 1 Through-beam F3EM-005_ F3EM-018_ 0 to 3 m 0 to 15 m 0 to MaxM mm; MaxM: 150, 300, 600, 900, 0 to MaxM mm; MaxM: 150, 300, 600, 900, 20001 21002 10 mm 30 mm 5 mm 18 mm 0-10 VDC, max. load current 30 mA RS 232 Analog output: 5 ms + 0, 18 x channels; Serial output: 4. 5 ms + 0. 38 x channels at 4800 bps Infrared LED (950 nm) 24 VDC ±10% 0 to 50°C IEC 60529 IP65 35 x 45 x (55 + 0. 98 x MaxM) mm 35 x 45 x (55 + 1. 06 x MaxM) mm Aluminium Polycarbonate Models with different measurement ranges between 150 mm and 2000 mm are available in 50 mm intervals. [. . . ] The analog output can operate either in STANDARD mode or INVERTED mode: · STANDARD mode: 0 V (if no beams is interrupted) to 10 V (if all beams are interrupted) · INVERTED mode: 10 V (if no beams is interrupted) to 0 V (if all beams are interrupted) Please find the DIP switch setting below: Switch 123 Distance setting (NEAR position recommended if distance is <1 m ON NEAR OFF FAR (default) not used 4 Operation mode Communication protocol The communication of serial interface provides two possible operation modes: · Command-response · Triggered by external input A) In command-response mode the command is 1 byte: Command (hexadecimal) = 'BF' The light curtain responds with a fixed number of bytes depending on the number of light beams. the response of a light curtain with 20 beams is 3 bytes: 1st byte 2nd byte 3rd byte 8 16 0 7 15 0 6 14 0 5 13 0 4 12 20 3 11 19 2 10 18 1 9 17 not used ON OFF DECREASING INCREASING (default) The response bytes are composed by each bit representing the status of each beam in the order as in the example above. Remaining unused bits in the last byte are set to zero. Each bit signals: 0 = BEAM NOT INTERUPTED 1 = BEAM INTERRUPTED This drawing shows how the beams are numbered on the light curtain Analog output value The output value is related linear to the number of beams interrupted by the object to be measured. For STANDARD mode: Output voltage = (10/ n° of optical units) * n° of interrupted beams [VDC] If multiple objects are inside the sensing area, the system will read the total number of beams interrupted accordingly. Referring to the illustration below, the F3EM provides an output signal in proportion with the sum of A+B: A B As a result each response byte contains 8 beams. The following formula applies for the calculation if the number of response bytes: number of bytes = INT (number of optical units + 7) / 8) The maximum number of optical beams that can be managed is 400. B) Trigger by external input Serial Output Models - RS232 (F3EM-_-D2) The RS232 serial interface of F3EM is specified as follows: · Full duplex operation · Data format: 8-N-1 (bit start - 8-bit data - 1-bit stop - no parity) Transmission speed setting (Baud Rate) The baud rate can be set by DIP switch 1 and 2. Alternatively the response can be forced by signal on the STROBE input (PNP logic); the light curtain responds on the serial line with the same protocol explained above. Measurement method In order to avoid missing information the light curtain stores interruption of beam signals until the status is sent in the next protocol response. After the response is sent the interruption status is reset (all bits to zero). Therefore it can occur that a command or trigger arrives before the scan is completed. In this case the scan is interrupted and the status of the scan before is transferred in the response protocol. @ The baud rate must be set both on the receiver bar dip-switches as well as the transmitter bar dip-switches to align the timing synchronism of the two bars. DIP Switch 2 OFF ON (default) OFF ON Baud Rate (bps) 4800 9600 (default) 19200 38400 DIP Switch 1 OFF OFF (default) ON ON F3EM Measuring lightcurtain in robust aluminium housing 5 Mounting Mechanical attachment and alignment Standard Mounting Bracket (provided with the sensor) When the mounting bracket is attached to the surface, the mounting screws can be inserted into the mounting rail of the light curtain. This allows a vertical position adjustment. Adjustable Mounting Bracket Order separately under: F39-TGR-ST-ADJ For adjustment of the optical axis angle, the adjustable mounting bracket allows a turning of the light curtain. Laser Alignment Order separately under: F39-TGR-LLK2-SB The laser alignment kit can be snapped onto the light curtain and emits a high visibility laser beam for ensuring the optimal optical axis angle adjustment. Cable connectors For pin arrangement and connecting the wires refer to Output Circuits. Material Size M12 Shape Type General purpose (screw) Features 5 wire Nut Cable XS2F-M12PVC5S2M XS2F-M12PVC5A2M Order code Brass (CuZn) PVC 2M PUR 2M XS2F-M12PUR5S2M XS2F-M12PUR5A2M 6 F3EM Measuring lightcurtain in robust aluminium housing Precautions @ WARNING The F3EM multi-beam photoelectric sensor with beam evaluation function is not a safety component for ensuring the safety of people which is defined in EC directive (2006/42/EC) or by any other regulations or standards. Power Supply Voltage and Output Load Power Supply Voltage Do not connect an AC power supply to the Sensor. [. . . ] Cleaning Never use paint thinners or other organic solvents to clean the surface of the product M12 Connector Always turn OFF the power supply to the sensor before connecting or disconnecting the metal connector. Hold the connector cover to connect or disconnect it. Do not use pliers; otherwise the connector may be damaged. [. . . ]