MINI-BEAM SM312W and SM312DBZ Self-contained DC-operated Wide-angle Diffuse Mode Proximity Sensors Compact, modulated, self-contained infrared wide-angle diffuse proximity mode sensors for 10-30V dc operation SM312W wide angle (divergent) diffuse mode sensor, 125 mm (5 in) range Ideal for close-range sensing of transparent or translucent objects, or objects with small profile SM312DBZ: wide-angle diffuse mode sensor, 300 mm (12 in) range Both models have clear acrylic opto-element covers to meet FDA food-processing application requirements Switch-selectable for light operate or dark operate Includes Banners exclusive AID alignment system* Highly-repeatable 1 millisecond response Both sourcing and sinking outputs (150 mA max. each) continuous overload and short-circuit protected Rugged, epoxy-encapsulated construction: meets NEMA standards 1, 2, 3, 3S, 4, 4X, 6, 12 and 13 IEC IP67 *US patent number 4356393 Infrared, 880 nm MINI-BEAM Diffuse Mode Models Supply Output Excess Gain Beam Pattern Models Range Cable* Voltage Type Performance based on 90% reflectance white test card 1000 SM312DBZ E SM312DBZ 15 mm 0.6 in X Diffuse Mode Diffuse Mode C 10 mm 0.4 in 100 E 5 mm 0.2 in S 0 0 S SM312DBZ 300 mm 2 m (6.5 ) Bipolar 10-30V dc 5 mm 0.2 in 10 SM312DBZQD (12 ) 4-Pin Euro QD NPN/PNP G 10 mm 0.4 in A 15 mm 0.6 in I N 0 75 mm 150 mm 225 mm 300 mm 375 mm 1 3.0 in 6.0 in 9.0 in 12.0 in 15.0 in 1 mm 10 mm 100 mm 1000 mm .04 in .40 in 4.0 in 40 in DISTANCE DISTANCE 1000 SM312W E SM312W X 22.5 mm 0.9 in Diffuse Mode Diffuse Mode C 100 15.0 mm 0.6 in E S 7.5 mm 0.3 in S SM312W 130 mm 2 m (6.5 ) Bipolar 0 0 10-30V dc 7.5 mm 0.3 in 10 G SM312WQD (5 ) 4-Pin Euro QD NPN/PNP A 15.0 mm 0.6 in I 22.5 mm 0.9 in N 1 0 25 mm 50 mm 75 mm 100 mm 125 mm 1 mm 10 mm 100 mm 1000 mm 1.0 in 2.0 in 3.0 in 4.0 in 5.0 in .04 in .4 in 4 in 40 in DISTANCE DISTANCE *NOTES: i) 9 m (30 ) cables are available by adding suffix W/30 to the model number of any cabled sensor (e.g., SM312DBZ W/30). ii) A 150 mm (6 ) long pigtail cable with attached QD connector is available by adding suffix QDP to the model number of any MINI-BEAM sensor (e.g., SM312DBZQDP). See page 5 for more information. iii) A model with a QD connector requires an accessory mating cable. See page 6 for more information. iv) May be ordered with 0.3 millisecond on/off response by adding suffix MHS to the model numbers (e.g., SM312DBZMHS). This modification reduces sensing range (and excess gain). Printed in USA 05/01 P/N 03564 rev. C MINI-BEAM Sensors SM312W and SM312DBZ MINI-BEAM Installation and Alignment Proper operation of a SM312W or SM312DBZ sensor requires that it be mounted securely DIFFUSE MODE ALIGNMENT and aligned properly. The wide-angle optics of these sensors makes sensor alignment very forgiving. 1) Begin with the sensor at the desired distance from the object to be sensed, and at the approximate position where it will be mounted. Any background should be as far behind the object as possible (at least three times the sensor-to-object distance), and as dark a color as possible, compared to the object. Ideally, the object should present SM312DBZ or SM312W its largest reflective surface to the sensor. 2) Apply power to the sensor, and advance the 15-turn GAIN control to maximum (clockwise end of rotation). The GAIN control is clutched at both ends to avoid damage, and will free-wheel when either end point is reached. If the sensor is seeing its reflected light, the sensor alignment LED should be on. Move the sensor up-down-right-left (include angular rotation) to obtain the fastest receiver LED pulse rate. If a pulse is not observable (too fast to count), reduce the GAIN control (counterclockwise rotation) to obtain a countable pulse rate. 3) Repeat the alignment motions after each GAIN reduction. When you have found the sensor orientation that produces the fastest pulse rate, mount the sensor solidly in that position. Increase the receiver GAIN to maximum. Test the system by removing the object from the sensing position. The alignment LED indicator should go off. If the LED indicator does not go off, the sensor is reacting to light reflected from a background surface. Reduce the GAIN setting until the alignment indicator goes off, SM312W and SM312DBZ plus two additional full turns. Again place the object in the sensing position. If the 15 Turn alignment indicator does not come on, the sensor is receiving as much or more Gain light energy from the background as from the object. Consider the following Adjustment and Light/Dark alternatives: Operate Switch* Gasketed a) move the sensor closer to the object and reduce the sensitivity (GAIN) Acrylic Cover b) reduce background reflectivity by painting the background with flat-black AID Indicator LED Lights when the paint, or by scuffing the background or cutting a hole through it sensor sees the reflection of its own modulated light and pulses at a rate proportional to the strength of the received light signal. c) tilt the sensor or the background so that the sensing beam is not perpendicular to the background. * Note regarding Light/Dark operate switch: Turn switch fully clockwise for light operate (sensor outputs conduct when sensing light is present) Turn switch fully counterclockwise for dark operate (sensor outputs conduct when sensing light is not present) Banner Engineering Corp. Minneapolis, U.S.A. www.bannerengineering.com Tel: 763.544.3164 page 2 Object Up Left Right Down