MINI-BEAM SM2A312LV, SM2A312LVAG and SM2A312LP Self-contained AC-operated Retroreflective Mode Sensors Compact, modulated, self-contained retroreflective sensors for 24-240V ac operation Choose standard visible model for highest excess gain and greatest range, or polarized models for detection of shiny objects Switch-selectable for light-operate or dark operate highly repeatable 4 millisecond response SPST SCR solid-state output switches up to 300 mA low leakage current and saturation voltage Physically and electrically interchangeable with 18 mm barrel-type photoelectrics P Visible red, 650 nm Non-Polarized Polarized AC MINI-BEAM Retroreflective Mode Supply Output Models Range Cable Voltage Type Excess Gain Beam Pattern 1000 SM2A312LV Non-Polarized E SM2A312LV X 75 mm 3.0 in C Retroreflective Mode 100 50 mm 2.0 in E Retroreflective Mode With BRT-3 Reflector 25 mm 1.0 in S S 0 0 SPST 25 mm 1.0 in 10 SM2A312LV 5 m 2 m (6.5 ft) G 50 mm With BRT-3 Reflector 2.0 in 24-240V ac Solid-state A SM2A312LVQD (15 ft) 3-Pin Micro QD I 75 mm 3.0 in 2-Wire N 1 0 1 m 2 m 3 m 4 m 5 m .01 m .10 m 1.0 m 10 m 3 ft 6 ft 9 ft 12 ft 15 ft .033 ft .33 ft 3.3 ft 33 ft DISTANCE DISTANCE 1000 SM2A312LVAG Polarized E X SM2A312LVAG 75 mm 3.0 in C Retroreflective Mode Retroreflective Mode 100 E 50 mm 2.0 in S 25 mm 1.0 in 50 mm With BRT-3 Reflector S 0 0 to SPST 10 G 25 mm 1.0 in SM2A312LVAG 2 m (6.5 ft) A 2 m 24-240V ac Solid-state 50 mm 2.0 in I SM2A312LVAGQD 3-Pin Micro QD With BRT-3 Reflector 75 mm 3.0 in (2 in to 2-Wire N 1 7 ft) 0 .6 m 1.2 m 1.8 m 2.4 m 3.0 m .01 m .10 m 1.0 m 10 m 2 ft 4 ft 6 ft 8 ft 10 ft .033 ft .33 ft 3.3 ft 33 ft DISTANCE DISTANCE 1000 SM2A312LPQD Extended Range Polarized* SM2A312LP E Retroreflective Mode 75 mm 3.0 in X Retroreflective Mode C 50 mm 2.0 in 100 E 25 mm 1.0 in S 10 mm S 0 0 to SPST 25 mm 1.0 in 10 G SM2A312LP 2 m (6.5 ft) 50 mm 2.0 in With BRT-3 Reflector 3 m 24-240V ac Solid-state A SM2A312LPQD 3-Pin Micro QD I 75 mm 3.0 in (0.4 in 2-Wire N 1 0 .6 m 1.2 m 1.8 m 2.4 m 3.0 m to 10 ft) 2 ft 4 ft 6 ft 8 ft 10 ft .01 m 0.1 m 1 m 10 m 0.03 ft 0.3 ft 3 ft 30 ft DISTANCE DISTANCE Note: May not perform with some non-Banner retroreflective targets. Printed in USA P/N 03563J7B MINI-BEAM Sensors SM2A312LV, SM2A312LVAG and SM2A312LP MINI-BEAM Installation and Alignment Proper operation of these sensors requires that they be mounted securely and aligned properly. For best results, final-mount these sensors in an 18 mm hole by their threaded barrel or use one of the available mounting brackets, (see pages 6 - 7). Retroreflective Mode Alignment 1) Begin with the sensor at the desired distance from the retro target and at the Move sensor (or target) to approximate position where it will be mounted. An object at the sensing obtain the fastest receiver LED position should pass through the core of the sensors light beam. pulse rate. 2) Switch the sensor to light-operate mode (see Note, below). Apply power to the sensor, and advance the sensors 15-turn GAIN control to maximum (clockwise end of rotation). If the sensor is seeing the reflected light beam, the alignment LED should be on. Move the sensor up-down-right-left to find the center of the movement zone within which the LED indicator remains lit. (Alternatively, the retro target may be moved.) Reducing the GAIN setting (if necessary) will reduce the size of the movement zone and make more precise alignment possible. 3) Repeat the alignment motions after each GAIN reduction. When you are satisfied that you have obtained optimum alignment, mount the sensor (or reflector) solidly in that position. Increase the receiver GAIN to maximum. Test the system by placing the object to be detected into the sensing position. The LED indicator should go off. (If it does, alignment is complete, and you may now switch the sensor to dark-operate if the application requires it.) If the LED of an LV model sensor does not go off, the sensor is reacting to light reflected from the object (called proxing). 15 Turn If proxing occurs, reduce the GAIN setting until the alignment indicator goes Gain off, plus two additional full turns. Remove the object from the sensing Adjustment and Light/Dark position and check that the alignment indicator LED comes on. Confirm that Operate Switch* the LED goes off when the object is replaced. Gasketed Proxing can be avoided by mounting the sensor so that its light beam is not Acrylic Cover perpendicular to any flat reflective surface on the object to be detected (an Alignment indicator LED lights when the sensor s angle of 10 to 15 degrees is usually sufficient). Also, at distances of a few feet output is conducting. or more, using more than one reflector may increase sensing contrast between object-present and object-absent. * Note regarding Light/Dark operate switch: Turn switch fully clockwise for light operate (sensor outputs conduct when object is absent) Turn switch fully counterclockwise for dark operate (sensor outputs conduct when object is present) page 2 Retro Target Up Left Down