GH-5S. 5.6 times approx. Tightening torque 0.78N m or less. Disconnection Alarm Indicator

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1 GA- SERIES Amplifier-separated Micro-size Inductive Proximity Sensor GH SERIES -N -U Slim & Small The amplifier is extremely slim, just mm thick. This results in a compact size even if several amplifiers are mounted in a row. Moreover, the sensor head is also extremely small, the smallest being just ".8mm (). GA-4 mm ".8mm Reliable The sensor heads (,, and ) have IP67 protection. Further, the tightening torque has been significantly improved due to its thick case. Conventional models Tightening torque.4n m or less.6 times approx. High Accuracy Sensing with a Slim-size Sensor Tightening torque.78n m or less Accurate Fine adjustments are possible by its 8-turn, wide adjustment range sensitivity adjuster. Besides, its repeatability is!m or less and its temperature characteristics have been improved to twice as good as those of conventional models. Hence, it is suitable for high accuracy positioning applications. Comparison of temperature characteristics (GA- series) Variation (%) Comparison of repeatability Conventional model. times GA- series Within % Conventional model Within % GH series Screw Tightening Type Available GA- Disconnection Alarm Indicator Repeatability!m or less Wire-saving Repeatability!m or less GA-/GH GA- enables sensor head connection by screw tightening. Moreover, since the cover of the connecting portion is transparent, it is possible to confirm whether the connection is proper. Screw for cable clamp If the sensor head cable is damaged, or misconnected, the disconnection alarm indicator (orange ED) lights up for your attention. Disconnection Wrong clamping Amplifier with a plug-in connector, which is connectable to the sensor block of an S-INK system, or to the sensor block for simple wiring S-BMW or S-BW, or to a mating cable, is also available. core Transparent cover Disconnection alarm indicator (Orange) Mating cable CN-4-C (m long) CN-4-C (m long) Plug-in connector type GA-4J, GA-J Note: The above photograph shows GA-4J. 686

2 APPICATIONS Inspecting presence of washer The sensor detects the presence/ absence of a washer by the height of the spring-loaded rod. Aligning press molds The sensor detects even a minute misalignment. GA-/GH Detecting vibration of parts-feeder The sensor detects whether the feeder is vibrating. Spring-loaded rod GOOD ORDER GUIDE Sensor heads Type Cylindrical type Spatterresistant type Contact pin BAD Washer absent Appearance (mm) Sensing range (Note) Model No. ".8 ".8 ".4 "8 Maximum operation distance ( to.6mm) ( to.8mm) ( to.mm).mm Stable sensing range.8mm ( to.mm).4mm 4.mm Hysteresis.7mm or less.mm or less.4mm or less Note: The stable sensing range represents the sensing range for which the sensor can satisfy all the given specifications with the standard sensing object. The maximum operation distance represents the maximum distance for which the sensor can detect the standard sensing object at C constant ambient temperature. Usage within the stable sensing range is recommended for accurate sensing applications. Amplifiers -U Type One-touch clamping type Appearance Model No. GA-4 Supply voltage to 4V DC % Output NPN open-collector transistor -N Screw tightening type GA- Plug-in connector type Plug-in connector type is available. (Standard: cable type) When ordering the plug-in connector type, add suffix J to the model No. Model No.: GA-4J, GA-J Usable with the sensor & wire-saving link system S-INK, sensor block for simple wiring S-BMW or S-BW, or with connector attached cable CN-4-C or CN-4-C. Connector attached cable GA-/GH CN-4-C (m long) CN-4-C (m long) Sensor & wire-saving link system S-INK (Refer to P.6l for details.) Sensor block for simple wiring S-BMW, S-BW (Refer to P.4l for details.) 687

3 GA-/GH OPTIONS Designation Model No. Description Sensor head mounting bracket MS-SS MS-SS MS-SS8 Mounting bracket for Mounting bracket for Mounting bracket for Sensor head mounting bracket The sensor head can be easily fixed. SPECIFICATIONS -U -N GA-/GH Amplifiers Item Applicable sensor head Supply voltage Current consumption Sensing output Output operation Short-circuit protection Disconnection alarm output Output operation Short-circuit protection Max. response frequency Operation indicator Disconnection alarm indicator Ambient temperature Ambient humidity Noise immunity Voltage withstandability Insulation resistance Vibration resistance Shock resistance Temperature characteristics (Note) Material extension Weight Accessories Environmental resistance Type Model No. One-touch clamping type GA-4 Screw tightening type GA- GH series to 4V DC % Ripple P-P % or less ma or less NPN open-collector transistor Maximum sink current: ma Applied voltage: V DC or less (between sensing output and V) Residual voltage: V or less (at ma sink current).4v or less (at 6mA sink current) Switchable either Normally Open or Normally Closed Incorporated NPN open-collector transistor Maximum sink current: ma Applied voltage: V DC or less (between disconnection alarm output and V) Residual voltage: V or less (at ma sink current).4v or less (at 6mA sink current) ON when the sensor head cable is disconnected or misconnected.khz Red ED (lights up when the sensing output is ON) Orange ED (lights up when the disconnection alarm output is ON) 8-turn potentiometer to 6 C (No dew condensation or icing allowed), Storage : to 7 C to 8% RH, Storage: to 8% RH Power line: 4Vp, ms cycle and.!s pulse width; Radiation: Vp, ms cycle and.!s pulse width (with noise simulator),v AC for one min. between all supply terminals connected together and enclosure MΩ, or more, with V DC megger between all supply terminals connected together and enclosure to Hz frequency,.7mm amplitude in X, Y and Z directions for two hours each m/s acceleration (G approx.) in X, Y and Z directions for five times each Within % Enclosure: Heat-resistant ABS, Cover: Polycarbonate, lock lever: PPS (GA-4 only).mm 4-core cabtyre cable, m long Extension up to total m is possible with.mm, or more, cable. 6g approx. MS-DIN- (Amplifier mounting bracket): No., Adjusting screwdriver: No. Note: The value of the temperature characteristics gives the variation in the operation distance, that has been set within the stable sensing range at C, for an ambient temperature drift from to C. 688

4 SPECIFICATIONS Sensor heads Type Item Model No. Applicable amplifier Stable sensing range (Note ) Max. operation distance (Note ) Standard sensing object GA-/GH Cylindrical type Spatter-resistant type GA- series to.6mm to.8mm to.mm to.mm.mm.8mm.4mm 4.mm sheet tmm sheet tmm Hysteresis (Note ) Repeatability (Note ) Protection Ambient temperature Ambient humidity Vibration resistance Shock resistance Environmental resistance Temperature characteristics (Note ) Material Weight.7mm or less.mm or less.4mm or less Along sensing axis, perpendicular to sensing axis:!m or less IP (IEC) IP67 (IEC), IP67g (JEM) to 6 C, Storage: to 7 C to 8% RH, Storage: to 8% RH to Hz frequency,.mm amplitude in X, Y and Z directions for two hours each m/s acceleration (G approx.) in X, Y and Z directions for five times each Within 7% Within % Within 4% Enclosure: Stainless steel (SUS) Sensing face: PVC Enclosure: Stainless steel (SUS) Sensing face: ABS Enclosure: Stainless steel (SUS) Sensing face: PAR Enclosure: Stainless steel (SUS) Sensing face: ABS Enclosure: Stainless steel (SUS) Sensing face: Fluorine resin Oil resistant high-frequency coaxial cable, m long (Note 4) Spatter resistant cable (cable sheath: fluorine resin), m long g approx. g approx. 4g approx. g approx. Notes: ) The stable sensing range represents the sensing range for which the sensor can satisfy all the given specifications with the standard sensing object. The maximum operation distance represents the maximum distance for which the sensor can detect the standard sensing object at C constant ambient temperature. Usage within the stable sensing range is recommended for accurate sensing applications. Notes: ) Value is given for the stable sensing range. Notes: ) The value represents the variation in the operation distance, that has been set within the stable sensing range at C, for an ambient temperature drift from to C. Notes: 4) The length of the sensor head cable cannot be changed. I/O CIRCUIT AND WIRING DIAGRAMS I/O circuit diagram Color code Wiring diagram Brown -U Sensor circuit Tr Tr D ZD ZD (Brown) V (Black) oad Sensing output oad ma max. (Orange) Disconnection alarm output (Blue) V ma max. to 4V DC % Black Orange Blue oad oad to 4V DC % -N Internal circuit Users circuit Symbols... D: Reverse supply polarity protection diode ZD, ZD: Surge absorption zener diode Tr, Tr : NPN output transistor Pin position of plug-in connector type (GA-4J, GA-J) Sensing output Disconnection alarm output V V GA-/GH 68

5 GA-/GH Setting distance (mm) Setting distance (mm) SENSING CHARACTERISTICS (TYPICA) Sensing field. Standard sensing object sheet tmm # eft Center Right Operating point?(mm) Sensing field Standard sensing object sheet tmm #. eft Center Right Operating point?(mm) The graph on the left is plotted with the sensitivity adjusted so as to just detect a tmm iron sheet placed at a distance of.6mm. The graph on the left is plotted with the sensitivity adjusted so as to just detect a tmm iron sheet placed at a distance of.8mm. Correlation between sensing object size and sensing range As the sensing object size becomes Sensing object a amm tmm smaller than the standard size (iron sheet tmm), the sensing range shortens as shown in the left figure. Sensing range (mm). Stainless steel (SUS4) Aluminum Sensing object side length a (mm) ( ) The graph on the left is plotted with the sensitivity adjusted so as to just detect a tmm iron sheet placed at a distance of.6mm. Correlation between sensing object size and sensing range As the sensing object size becomes Sensing object a amm smaller than the standard size (iron tmm sheet tmm), the sensing range shortens as shown in the left figure. Sensing range (mm). Stainless steel (SUS4) Aluminum Sensing object side length a (mm) ( ) The graph on the left is plotted with the sensitivity adjusted so as to just detect a tmm iron sheet placed at a distance of.8mm. -U -N GA-/GH Setting distance (mm) Setting distance (mm) Sensing field. Standard sensing object sheet tmm # 4 4 eft Center Right Operating point?(mm) Sensing field Standard sensing object sheet tmm # eft Center Right Operating point?(mm) The graph on the left is plotted with the sensitivity adjusted so as to just detect a tmm iron sheet placed at a distance of.mm. The graph on the left is plotted with the sensitivity adjusted so as to just detect a tmm iron sheet placed at a distance of.mm. Correlation between sensing object size and sensing range As the sensing object size becomes smaller than the standard size (iron sheet tmm), the sensing range shortens as shown in the left figure. Sensing range (mm). Sensing object a amm tmm Stainless steel (SUS4) Aluminum Sensing object side length a (mm) ( ) The graph on the left is plotted with the sensitivity adjusted so as to just detect a tmm iron sheet placed at a distance of.mm. Correlation between sensing object size and sensing range As the sensing object size becomes Sensing range (mm) Stainless steel (SUS4) Sensing object a amm Aluminum tmm Sensing object side length a (mm) smaller than the standard size (iron sheet tmm), the sensing range shortens as shown in the left figure. ( ) The graph on the left is plotted with the sensitivity adjusted so as to just detect a tmm iron sheet placed at a distance of.mm. 6

6 PRECAUTIONS FOR PROPER USE This product is not a safety sensor. Its use is not intended or designed to protect life and prevent body injury or property damage from dangerous parts of machinery. It is a normal object detection sensor. Mounting of the amplifier Make sure to connect the GH sensor head to the GA- amplifier correctly, or malfunction will occur. Do not shorten or lengthen the sensor head cable. How to mount the amplifier Fit the rear part of the amplifier on the attached amplifier mounting bracket (MS-DIN-) or a mm width DIN rail. Press down the front part of the amplifier on the attached amplifier mounting bracket (MS-DIN-)or DIN rail to fit it. How to remove the amplifier Push the amplifier forward. ift up the front part of the amplifier to remove it. Note: Please take care that if the front part is lifted without pushing the amplifier forwards, the hooks on the rear portion of the mounting section are likely to break. Sensor head cable connection GA-4 Prepare the cable end as shown in the right figure, and twist the shield wire and the cable core inner conductor, respectively. If they are not twisted properly, they may not enter the inlets resulting in misconnection. Note: Separate the shield wire from the cable core. Open the cover. Flip the cable lock lever down. 4 Referring to the cable connection diagram at the side of the amplifier, insert the shield wire and the cable core straight into the inlets, without bending them. Flip up the cable lock lever to lock the cable. 6 Make sure to fit the cover on the amplifier after connecting the sensor head. Attached amplifier mounting bracket or mm width DIN rail Note: If there is a shred of the cable left inside the cable inlet, remove it before connecting the sensor head cables. Turn the amplifier upside down, and tap it around the holes. If the shred still remains, peel the bottom seal off the amplifier, and drop it out. (The seal is reusable.) shred seath core Cover lock lever mm mm 4 core 6 Cover GA- Prepare the cable end as shown in the right figure, and twist the shield wire and the cable core inner conductor, respectively. Note: Separate the shield wire from the cable core. Open the cover. oosen the screw for the cable clamp by turning it counterclockwise. 4 Referring to the cable connection diagram at the side of the amplifier, insert the shield wire and the cable core straight into the inlets, without bending them. Tighten the screw for the cable clamp by turning it clockwise. The tightening torque should be.n m or less. 6 Make sure to fit the cover on the amplifier after connecting the sensor head. Note: Take care since the shield wire may get slightly exposed. Set screw (M or less) A GA-/GH Refer to P.86l for general precautions. Mounting of the sensor head How to mount the sensor head The tightening torque should be as given below. Make sure to use a set screw with a cup-point end. Note: Do not tighten excessively. Distance from surrounding metal If there is a metal near the sensor head, it may affect the sensing performance. Keep the minimum distance specified in the table below. Background metal B Model No. sheath core mm mm Cover Screw for cable clamp 4 Screw for cable clamp Tightening torque.7n m.7n m.78n m.n m core 6 Cover Model No. B (mm) 4 A (mm) or more 4 or more or more or more -U -N GA-/GH Seal Seal 6

7 GA-/GH PRECAUTIONS FOR PROPER USE Mutual interference When two or more sensors are installed in parallel or face to face, keep the minimum separation distance specified below to avoid mutual interference. <Face to face mounting> <Parallel mounting> Model No. C (mm) D (mm) Sensing range The sensing range is specified for the standard sensing object. With a non-ferrous metal, the sensing range is obtained by multiplying with the correction coefficient specified below. Correction coefficient Model No. Metal Stainless steel (SUS4).68 approx.. approx..6 approx..64 approx.. approx.. approx..4 approx..7 approx. Aluminum. approx.. approx.. approx.. approx. Part description GA-4 C core inlet inlet GA- D lock lever Operation mode switch 4 6 Operation indicator (Red) Disconnection alarm indicator (Orange) Refer to P.86lfor general precautions. Others Do not use during the initial transient time (ms) after the power supply is switched on. Do not use the sensor at places having intense vibrations, as this can cause malfunction. When the sensor head is mounted on a moving base, stress should not be applied to the sensor cable joint. Stress Stress -U Screw for cable clamp inlet core inlet Operation mode switch Operation indicator (Red) Disconnection alarm indicator (Orange) Sensitivity adjustment -N Step Sensing condition Set the operation mode switch to NORM. (Initial setting) Adjustment Turn the sensitivity adjuster fully counterclockwise. (Minimum sensitivity) Sensitivity adjuster MIN MAX GA-/GH Approach along sensing axis Approach perpendicular to sensing axis Sensor head Sensor head Sensing object Sensing object Movement axis Movement axis Place the sensing object within the stable sensing range. Turn the sensitivity adjuster clockwise and set it at the where the operation indicator lights up. Place the sensing object within the stable sensing range. Turn the sensitivity adjuster clockwise, and set it at the optimum sensing point b which is a little beyond the where the operation indicator lights up. MIN MAX MIN MAX A A B Select the operation mode as per your application. (NORM.: Normally open, INV: Normally closed) Note: Use the accessory screwdriver to turn the adjuster slowly. Turning with excessive strength will cause damage to the adjuster. 6

8 DIMENSIONS (Unit: mm) GA-4 core inlet inlet..8 Amplifier Assembly dimensions with attached amplifier mounting bracket lock lever The cable output section of the plug-in connector -". holes type sensor differs Seal Note: The top view is without the cable and the cover. MS-DIN " ". holes Operation mode switch Operation indicator (Red).6 Disconnection alarm indicator (Orange) "4. cable m long " Attached amplifier mounting bracket (MS-DIN-). Amplifier mounting bracket (Accessory for amplifier) t.. Shield wire inlet.7 GA- -screw for cable clamp core inlet The cable output section of the plug-in connector type sensor differs A GA-/GH Amplifier Assembly dimensions with attached amplifier mounting bracket ". holes Sensor head B Model No. A B C C Note: The top view is without the cable and the cover. Operation mode switch Operation indicator (Red).6 Disconnection alarm. indicator (Orange) m long "4. cable m long " Attached amplifier mounting bracket (MS-DIN-)... ".8 ".6 ".8 ". ".4 ". "8. ". -U Material: Cold rolled carbon steel (SPCC) Material: (Uni-chrome plated) MS-SS MS-SS MS-SS8 Sensor head mounting bracket (Optional) -N -". mounting holes F D E G Material: Nylon 66 Symbol Model No. MS-SS MS-SS MS-SS8 D E F G Applicable sensor head model No. GA-/GH 6