1MEUEN-EX20 V2.0Thank you for purchasing products from Panasonic Electric Works SUNXCo., Ltd. Please read this Instruction Manual carefully and thoroughly forthe correct and optimum use of this product. Kindly keep this manual in aconvenient place for quick reference. This product has been developed / produced for industrial use only. A thin 0.1mm 2 cable is used for this product. Do not use excessive forcewhen pulling on the cable: it may cause cable to break. EX-24(-PN) types are not incorporated with a sensitivity adjuster.Maintain adequate distance from reflective objects in the background,e.g. conveyors, since they may adversely effect sensing. If a reflective object is present in the background, the sensing ofEX-28A(-PN) may be affected. When setting up the sensor, confirmthat the reflective object has no effect. If the reflective object affectssensing, removing the reflective object, color it black, or take otherappropriate measures. If sensors are mounted close together and the ambient temperature isnear the maximum rated value, provide for enough heat radiation /ventilation. Make sure that the power supply is off while wiring. Incorrect wiring will damage the sensor. Verify that the supply voltage including the ripple is within the rating.Verify that the supply voltage variation is within the rating. If power is supplied from a commercial switching regulator, ensure thatthe frame ground (F.G.) terminal of the power supply is connected to anactual ground. In case noise generating equipment (switching regulator, inverter motor,etc.) is used in the vicinity of this product, connect the frame ground(F.G.) terminal of the equipment to an actual ground. Do not run the wires together with high-voltage lines or power lines or putthem in the same raceway. This can cause malfunction due to induction. You can extend the cable up to 50m max. with 0.3mm2 or more cable forboth emitter and receiver (thru-beam types). However, in order to reducenoise, make the wiring as short as possible. Do not use during the initial transient time (0.5s) after the power supply isswitched on. Ensure that the sensor is not directly exposed to the following lightsources as they may adversely effect sensing performance: fluorescentlight from a rapid-starter lamp, a high frequency lighting device, sunlightetc. Do not apply stress directly to the sensor cable joint by forcibly bendingor pulling. This sensor is suitable for indoor use only. Avoid dust, dirt and steam. Do not use this sensor in places havingexcessive vapor, dust, etc., or where it may come in direct contact withwater or corrosive gas. Take care that the sensor does not come in contact with oil, grease,organic solvents such as thinner, etc., strong acid, or alkalines.EX-21EX-23INSTRUCTION MANUALPhotoelectric Sensor Ultra-compact typeEX-20 SeriesWARNING• Never use this product as a sensing device for personnel protection.• In case of using sensing devices for personnel protection, useproducts which meet laws and standards, such as OSHA, ANSI or IECetc., for personnel protection applicable in each region or country.1 CAUTIONS2 PART DESCRIPTIONNo. Part Description1 Beam axis2 Stability indicator(green)Receiver only.Lit when detection is stable accordingto the parameters set.3 Operation indicator(orange)Receiver only.Lit when the output is ON.No. Part Description1 Beam axis2 Stability indicator(green)Receiver only.Lit when detection is stable accordingto the parameters set.3 Operation indicator(orange)Receiver only.Lit when the output is ON.4 Operation modeswitchReceiver only.• L: Light-ONTurn the operation modeswitch fully clockwise until itstops.• D: Dark-ONTurn the operation modeswitch fullycounterclockwise until itstops.5 Sensitivity adjuster Emitter only.Sensing range increased when turnedclockwise.See “SENSITIVITY ADJUSTMENT” onpage 2.12 3LD12 345LDLDRugghölzli 2CH - 5453 BusslingenTel. +41 (0)56 222 38 18Fax +41 (0)56 222 10 12mailbox@sentronic.comwww.sentronic.comProdukte, Support und ServiceSENTRONIC AG