sensors sa1a and sa1b: high-speed, slim style photoelectric sensors www.idec.com usa: (800) 262-idec or (408) 747-0550, canada: (888) 317-idec q-47 q sensors key features of the sa1a and sa1b include: ?ideal for installations with broad or narrow clearances ?available with through-beam between the projector and receiver, which features a sensing range of 6'?-3/4" (2m) ?sensing by diffuse-re?cted light available, with a sensitivity adjustment for eliminating the interference of background light ?through-beam and diffuse-re?cted light sensors are featured in all con?urations ?con?urations include npn or pnp transistor output, with light on or dark on (senses the presence or absence of an object) ?adverse results and circuit damage are avoided through protection from reverse polarity ?high-speed, 1ms response time ?automatic reset with power-up ?protection rated ip66 general specifications power voltage 12v to 24v dc operating voltage 10v to 30v dc, (ripple 10% maximum) current draw 25ma (maximum) dielectric strength between live and dead parts: 1,000v ac, 50/60hz, 1 minute insulation resistance between live and dead parts: 20m ? (minimum), with 500v dc megger operating humidity 35 to 85% rh (avoid condensation) operating tempera- ture ?5?to +55? (avoid freezing) storage temperature ?5?to +65? vibration resistance damage limits: 10 to 55hz, amplitude 1.5mm p-p, 2 hours in each of 3 axes shock resistance damage limits: 500m/s 2 (approximately 50g), 10 shocks in each of 3 axes extraneous light immunity sunlight: 10,000 lux (maximum), incandescent light: 3,000 lux (maximum) ? de?ed as incident or unwanted light received by a sensor, unrelated to the presence or absence of the intended object material housing and lens: polycarbonate degree of protection ip66 ?iec pub 529, sensors rated ip66 are dust-tight, water-resistant, and perform best when not subjected to heavy particle or water blasts cable cable type: 0.2mm 2 ; vinyl cabtyre cable #26 awg x 6'?-3/4" (2m) long t ransmitter: 2-core, receiver: 4-core cable extension 328' (100m) maximum using #22 awg (0.3mm 2 ) cabtyre cable or better weight projector: 40g; receiver: 45g narrow/flat type sa1a/b-tn1, -tn2 sa1a/b-dn1, -dn2 sa1a/b-tp1, -tp2 sa1a/b-dp1, -dp2 function speci?ations detection through-beam diffuse-re?cted light through-beam diffuse-re?cted light sensitivity adjustable adjustable hysteresis 20% (maximum) 20% (maximum) output npn transistor open collector 30v dc, 100ma (maximum) pnp transistor open collector 30v dc, 100ma (maximum) light source infrared led (modulation mode) led on: when output is on response 1ms (maximum) sa1a and sa1b: high-speed, slim style photoelectric sensors
sa1a and sa1b: high-speed, slim style photoelectric sensors sensors q-48 www.idec.com usa: (800) 262-idec or (408) 747-0550, canada: (888) 317-idec q sensors part numbers: sa1a and sa1b sensors slit options, ordered separately, modify the beam size of through-beam sensors. use when interference results from mounting sen sors in close proximity. part number type output on sensing range detects style sa1a-tn1 through- beam npn light on: no object detected 6' ?6-3/4" (2m) opaque objects 0.20" (5mm) minimum sa1a-tn2 dark on: object detected sa1a-tp1 pnp light on: no object detected sa1a-tp2 dark on: object detected sa1a-dn1 re?cted light npn light on: object detected 1.97" (50mm) opaque or t ransparent objects sa1a-dn2 dark on: no object detected sa1a-dp1 pnp light on: object detected sa1a-dp2 dark on: no object detected sa1b-tn1 through- beam npn light on: no object detected 6' ?6-3/4" (2m) opaque objects 0.20" (5mm) minimum sa1b-tn2 dark on: object detected sa1b-tp1 pnp light on: no object detected sa1b-tp2 dark on: object detected sa1b-dn1 re?cted light npn light on: object detected 1.97" (50mm) opaque or t ransparent objects sa1b-dn2 dark on: no object detected sa1b-dp1 pnp light on: object detected sa1b-dp2 dark on: no object detected part number and slit width used on one side used on both sides sa9z-s01 0.02" (0.5mm) 19.69" (0.5m) 11.81" (0.3m) sa9z-s02 0.04" (1mm) 39.37" (1m) 23.62" (0.6m) sa9z-s03 0.08" (2mm) 59.06" (1.5m) 35.43" (0.9m) all sensors include mounting brackets/screws. through-beam sensors come with a crimping tool, and diffuse-re?ected sensors include a screwdriver. modifying beam width: through-beam broad narrow style style
sensors sa1a and sa1b: high-speed, slim style photoelectric sensors www.idec.com usa: (800) 262-idec or (408) 747-0550, canada: (888) 317-idec q-49 q sensors 0.87" (22mm) 1.50" (38mm) 0.79" (20mm) 0.12" (3mm) 0.63" (16mm) center of projection through-beam 0.65" (16.5mm) diffuse-reflected 0.75" (19mm) 0.30" (7.5mm) 0.22" (5.5mm) 0.22" (5.5mm) ? 0.126" x 0.28" deep (3.2 x 7.1mm) 0.31" (8mm) tw o places 0.07" (1.8mm) 0.04" (1mm) 0.98" (25mm) 0.43" (11mm) 0.55" to 0.87" (14 to 22mm) 0.39" (10mm) 0.04" (1mm) 0.04" (1mm) 0.98" (25mm) 0.43" (11mm) 0.71" (18mm) 0.75" (19mm) 0.30" (7.5mm) 0.22" (5.5mm) 0.22" (5.5mm) ? 0.126" x 0.28" deep (3.2 x 7.1mm) tw o places center of projection 0.83" (21mm) through-beam 0.69" (17.5mm) diffuse-reflected 0.87" (22mm) 1.42" (36mm) 0.12" (3mm) 0.63" (16mm) ? 0.12" (m3) tw o places sa1a (broad view): sa1b (narrow view): through-beam and diffuse-reflected light through-beam and diffuse-reflected light 0.76" 0.24" (6.1mm) 0.18" (4.5mm) 0.35" (9mm) x 0.20" (5mm) (19.2mm) 0.28" (7mm) part no. sa9z ? 0.02" (0.5mm) ? 0.04" (1.0mm) ? 0.08" (2mm) s01: s02: s03: long slot option with slit: modify beam size of through-beam sensor tw o places 2. for through-beam sensors, dimensions for the projector and receiver are the same. on all sensors, the cord is ? 0.16" x 6' C 6-3/4" long (? 4mm x 2m). dimensions
sensors general information www.idec.com usa: (800) 262-idec or (408) 747-0550, canada: (888) 317-idec q-55 q sensors bright, extraneous light such as sunlight, incandescent lights, or ?orescent lights may impair the performance of sensors in detecting color or light. make sure that extraneous light does not exceed recommended levels found in the individual speci?ations sections. when 500 lux is speci?d, this is equal to 50 footcandles. the average factory illumination is ordinarily below this level, except in areas where visual inspection is being performed. only in such brightly lit areas is incident light of particular concern. unwanted light interference can often be avoided simply by making sure that the optical receiver is not aimed directly toward a strong light source. when mounting direction cannot be adjusted, place a light barrier between all nearby light sources and the receiver. when installing sensors which detect re?cted light, make sure that unwanted light re?ctions from nearby surfaces, such as the ?or, walls, re?ctive machinery, or stainless steel, do not reach the optical receiver. also, make sure that re?cted-light sensors mounted in close proximity do not cause interfering re?ctions. when it is not possible to maintain the recom- mended clearance between sensors, as noted in the individual installation sections, provide light barriers between sensors. a slit attachment is available to modify the beam size of through-beam sen- sors. this option is recommended for detecting very small objects (near the size of the smallest object which a sensor can detect) or for eliminating light interference when sensors are mounted in close proximity. important: always consider safety when installing a laser sensor of any kind. make sure that the laser beam cannot inadvertently shine into the eyes of people passing by or working in the vicinity. see safety information on page q-20. the mounting bracket and hardware are included with sensors, where appli- cable. use the appropriate hardware for mounting, along with washers and spring washers or lock nuts. do not overtighten attachment hardware. over- tightening causes damage to the housing and will adversely affect the water- proof characteristics of the sensor. best results can be obtained when the sensor is mounted so that the object sensed is in the center of the beam, rather than when the object is located near the edges of the sensing window. in addition, the most reliable sensing occurs when the majority of the objects being sensed are well within the sensing range, rather than at the extreme near and far limits. 3. sa6a ultrasonic sensors are not affected by extraneous light. mounting re?cted-light sensors through-beam sensors laser sensors do not operate a sensor under any conditions exceeding these speci?ations. do not operate a sensor under current and voltage conditions other than those for which the individual sensor is rated. do not exceed the recommended operating temperature and humidity. although sensors are rated for operation below 0?, this speci?ation does not imply that performance characteristics will remain constant under pro- longed freezing conditions. continued exposure and the accompanying frost, ice, dew, and condensation which accumulate on the optical surface will adversely affect sensor performance. to maintain superior performance characteristics, do not exceed vibration and shock resistance ratings while operating a sensor. in addition, avoid isolated impacts to the sensor housing which are severe enough to adversely affect the waterproof characteristics. sensors rated ip67 are resistant to moisture when occasionally immersed in still water. sensors rated ip64 through ip66 are resistant to moisture when occasionally subjected to splashing or when located in the vicinity of turbu- lent waters. these ratings do not imply that a sensor is intended for use under continual high-pressure water spray. avoid such applications to main- tain optimal sensor performance. sensors rated ip64 through ip67 are dust-tight and water-tight. for best per- formance, avoid using any sensor in an area where it will be subjected to heavy particle blasts and where dust, water, or steam will accumulate on the optical surface. do not test the housing for dielectric strength and insulation resistance, since the housing is connected to the electronic circuit ground of a sensor. do not perform dielectric strength and insulation resistance tests on electrical sys- tems without disconnecting photoelectric sensors, as such testing may result in damage to the sensor. several lines of sensors, as noted in the individual operation sections, are provided with an internal circuit to turn an output off for a speci?d amount of time upon power-up. this delay is normal; it prevents a transient state when turning power on. the optical surface of each sensor must be cleaned on a regular basis for con- tinual superior performance. use a soft cloth dipped in isopropyl alcohol to remove dust and moisture build-up. important: do not use organic solvents (such as thinner, ammonia, caustic soda, or benzene) to clean any part of a sensor. all sensors experience signal inconsistencies under the in?ence of inductive noise. do not use sensors in close proximity to transformers, large inductive motors, or generators. avoid using sensors in direct contact with sources of excessive heat. also avoid operation in close proximity to welding equipment. speci?ations iec (international electrotechnical commission) ratings start-up optimum performance extraneous light general information 1. even though the sa6a ultrasonic sensor features protection against noise, there may be adverse effects from strong noise. 2. it is strongly recommended to avoid using any sensor where it will be continually subjected to elements which impair perfor- mance or cause corrosive damage to the sensor. in particular, avoid strong vibrations and shocks, corrosive gases, oils, and ch emi- cals, as well as blasts of water, steam, dust, or other particles.
general information sensors q-56 www.idec.com usa: (800) 262-idec or (408) 747-0550, canada: (888) 317-idec q sensors a void running high-voltages or power lines in the same conduit with sensor signal lines. this prevents inaccurate results or damage from induced noise. use a separate conduit when the in?ence of power lines or electromagnetic equipment may occur, particularly when the distance of the wiring is extended. important: connect the sensor cables and wires as noted in the individual wiring sections. failure to connect as shown in wiring diagrams will result in damage to the internal circuit. when extending sensor cables and wires, make sure to use cables equal or superior to that recommended in the individual speci?ations sections. when wiring terminals, be sure to prevent contact between adjoining termi- nals. when using ring or fork lug terminals, use the insulated sleeve style only. each sensor terminal can accept only one ring of fork lug terminal. on isf series photoelectric sensors, use recommended cable, along with the attached packing gland and washer, when wiring the terminals. this ensures waterproof and dustproof characteristics. noise resistance characteristics are improved when a sensor is grounded to the 0v power terminal. if the 0v power terminal is not at ground potential, use a ceramic 0.01? capacitor which can withstand 250v ac minimum. when using a switching power supply, be sure to ground the fg terminal to eliminate high-frequency noise. the power supply should include an insulat- ing transformer, not an autotransformer. on isf series photoelectric sensors, the power supply should be sized accord- ing to the voltage drop through the lead wire when using a long extension for the dc type (328' or 100m maximum extension). the compact ps5r-a power supply is the perfect companion item for most idec sensors. this power supply is only 1.77" (45mm) wide, 3.15" (80mm) tall, and 2.76" (70mm) deep. call an idec representative for more details. strong magnetic ?lds may detract from the accuracy of the sensing measure- ment. avoid mounting a sensor directly to machinery, since the housing is con- nected to the electronic circuit ground of the sensor. if it is necessary to mount a sensor on machinery, use the insulating plate and sleeve provided. part number output ratings ps5r-a12 12v dc, 0.62a PS5R-A24 24v dc, 0.32a attenuation: reduction of beam intensity as a result of environmental fac- tors such as dust, humidity, steam, etc. dark on: output energized when light is not detected by the receiving ele- ment. for through-beam sensors, light from the projector is not detected by the receiver when an object is present. for re?cted light sensors, light is not detected when it is not re?cted from an object surface. diffuse-re?cted light sensors: sensors that detect all scattered, re?cted light. light re?cted from nearby surfaces, as well as intended object surface, is detected. diffuse-re?cted light sensors are often called ?roximity switches,?since they switch when any object is near. also use to detect color contrast when colors re?ct light intensity differently (green led recommended for this application). eeprom: acronym which stands for electronically erasable, programma- ble, read only memory. excess gain: ratio of optical power available at a given projector-to- receiver range divided by the minimum optical power required to trigger the receiver. extraneous light: incident light received by a sensor, irrelated to the pres- ence or absence of object being detected. extraneous light is usually unwanted background light such as sunlight and incandescent lamps in close proximity. ? e: the measurement of color difference as a three-variable function, located on an xyz axis of light, hue, and chroma values. hysteresis: operating point and release point at different levels. for solid state sensors, this is accomplished electrically. for mechanical switches, it results from storing potential energy before the transition occurs. light on: output energized when light is detected by receiving element. for through-beam sensors, light from the projector is detected by the receiver when an object is not present. for re?cted light sensors, light is detected when it is re?cted from an object surface. linearity: measurement of how nearly linear, that is, how accurate actual analog output is, with respect to distance. npn/pnp: t ypes of open collector transistors. npn is a sink transistor; output on establishes negative potential difference. pnp is a source tran- sistor; output on establishes positive potential difference. polarizing: filtering out all re?cted light except that which is projected in one plane only. polarized retro-re?cted light sensors detect the light from corner-cube type re?ctors when an object is not present. re?cted-light sensors: sensors with the projector and receiver in one housing. light is projected by the light source, and re?cted light is received by the optical surface. includes diffuse-re?cted, retro-re?cted, limited-re?cted, and spot-re?cted sensors. repeatability: ability of a sensor to reproduce output readings consis- tently when the same value is applied consecutively, in the same direction, for a speci?d number of cycles, or for a speci?d time duration. resolution: overall dimension of the smallest object which can be detected (when sensing the presence of an object) or smallest increment of distance which can be distinguished with reliable results (when sensing the position of an object). response time: t ime elapsed between input and output. total response time is the sum of object detection, ampli?r response, and output response times. retro-re?ctive scan: this type of re?cted light sensor uses a special re?ctor to return projected light when an object is not present. sensor detects the presence of an object when the light is re?cted differently. through-beam sensors: sensors with a separate projector and receiver. the light source from the projector is detected by the receiver, except when an object is present. t ransient: undesirable surge of current (many times larger than normal current) for a very short period, such as during the start-up of an inductive motor. glossary power supply wiring power supply miscellaneous
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