Koganei IONIZER, Technical Information Manualbook

Page 1: ...No BK SP005 Static Electricity Removing Unit IONIZER Technical Information Guidebook ...

Page 2: ...e Changes in Relation to Number of Throttle Valve Needle Rotations 6 Static Charge Removing Range by Nozzle Type 7 Selecting Pneumatic Equipment for Blow Type 8 Discharging Needle Maintenance Period Rough Guidelines 9 Cleaning Procedure for Discharging Needle 10 Steady Flow Fan Type Wind Speed Data 11 Other Materials Static Electricity Countermeasure Accessories 12 Static Electricity Q A 13 Freque...

Page 3: ...afers from being attracted to the transfer arm Removal of static charges on parts when carried by a parts feeder Static electricity is generated due to friction of parts while the parts feeder conveys them and the parts stick to the feeder s surface Use the blow type ionizer to prevent parts from becoming stuck due to static electricity Also simultaneous use with a fan type is effective for the st...

Page 4: ...w type Ionizers with U shaped bar nozzles in confined space to remove static charges on both sides of the wrap film Removal of static charges on devices carried by pallets Use blow type Ionizers with straight bar nozzles to remove static charges on a wide carrying pallet Use straight bar nozzles at two places to remove static charges Removal of static charges in pipes φ50 or less Inserting the tub...

Page 5: ...aped bar nozzle Removal of static charges from both sides simultaneously for up to 100 mm 3 94 in wide film Free mounting L shaped bar nozzle Enables bar rotation to change the direction of the ionized air flow outlet Applicable for 100 and 200 mm 3 94 and 7 87 in ionized air coverage Combining various nozzle units with bender nozzles Combining various nozzle units with the flexible tube enables s...

Page 6: ...ing films Removes static charges generated when film is peeled off from a roller Replace Louvers to match workpiece size Use when removing static charges at high speed in limited areas or when there is some distance to the workpiece Remarks While the application example is for the Steady Flow Fan Type only the same method can be used for the Wide Flow Fan Type as well Select the type to match the ...

Page 7: ...01 Static Charge Removing Characteristics Nozzle used Shower nozzle DTRY NZR20SW All nozzles have the same flow rate When throttle valve is fully open Nozzle used Shower nozzle DTRY NZL20SW All nozzles have the same flow rate When throttle valve is fully open Nozzle used Shower nozzle DTRY NZR20SW Measurement distance 50 mm 1 97 in When throttle valve is fully open Nozzle used Shower nozzle DTRY N...

Page 8: ... 300 250 200 mm mm 150 100 50 0 50 100 50 100 150 200 250 300 350 400 450 500 150 200 250 300 2 4 sec 4 6 sec 6 8 sec 8 10 sec 300 250 200 mm mm 150 100 50 0 50 100 50 100 150 200 250 300 350 400 450 500 150 200 250 300 Standard nozzle DTRY NZL01NS Shower nozzle DTRY NZL21SW 90 type Bender nozzle DTRY NZL300ND 300 mm 11 81 in nominal dimension Straight bar nozzle DTRY NZL100B 100 mm 3 94 in nomina...

Page 9: ...er Membrane air dryer R Regulator Regulator Regulator Regulator DTRY LF040 Mini line filter Ionizer Ionizer Ionizer Ionizer Blowing filling and especially strict particle control locations Locations where dry air or clean dry air is required Clean air for ordinary industrial use Air for ordinary industrial use Moisture removal Oil removal Dry air generation Air pressure regulation Final filter Hig...

Page 10: ...epending on the application conditions perform the cleaning after 300 to 500 hours of use When cleaning the discharging needle cleaning the louver and the inside of the ionizer body at the same time is recommended The photographs below show the shape of the discharging needle after cleaning The tip of the discharging needle can wear down from repeated use While it depends on the application enviro...

Page 11: ...r the static charge removal time and ion balance the charged plate monitor manufactured by was used Static charge removal time is the time required for decaying from 1000V down to 100V 1 2 1 1 1 0 1 0 9 11 ﾚ ﾚ 160 Initial condition Koganei Compact Blow Type DTRY ELL01 Date YYYY MM DD Static charge removal time sec Ion balance V Measurement conditions Cleaning check Discharging needle replacement O...

Page 12: ...ght louver is used 0 2 0 3 1 0 1 1 1 4 3 8 1 4 1 8 1 4 1 3 1 1 1 1 1 3 1 2 1 1 3 8 1 4 1 8 1 4 1 3 0 2 0 3 1 0 1 1 1 4 100 mm 100 mm 100 mm 100 mm 100 mm 100 mm 100 mm 100mm 100 mm m s DTRY ELF03 When wide angle louver is used 0 3 1 3 2 8 3 4 3 1 3 4 3 8 4 3 3 6 3 9 3 0 4 7 4 5 3 7 3 7 3 4 3 8 4 3 3 6 3 9 0 3 1 3 2 8 3 4 3 1 100 mm 100 mm 100 mm 100 mm 100 mm 100 mm 100 mm 100 mm 100 mm m s DTRY E...

Page 13: ...oated with antistatic agents They also have intermediate shield layers to prevent the build up of static charges on the packaging material or on the packaged content Use the bags to protect contents from breakdowns or damage due to static electricity Antistatic Fingerstalls and Gloves Fingerstalls and gloves are made of natural rubber containing carbon black or synthetic rubber containing antistat...

Page 14: ...us holding a positive electrical charge the nucleus further consists of positive protons and electrically neutral neutrons The electrons revolve around this nucleus And it is these electrons that form the basis of static electricity In normal conditions the positive electrical charge held by the protons is balanced against the negative electrical charge held by the electrons so that the atom overa...

Page 15: ...sure The higher the pressure the greater the amount of static electricity generated Friction The greater the friction the greater the amount of static electricity generated Temperature While not a major change a higher temperature results in a smaller resistance value Insulator Humidity The higher the humidity the smaller the amount of static electricity generated Triboelectric electrification Sta...

Page 16: ...ough the conductor grounding the charged conductor results in 0V Ground Electrically balanced state Ground Since electrons do not move freely grounding the charged insulator does not result in 0V In addition the amount of charges varies by location resulting in different polarities from one point to another Grounding an insulator does not result in 0V Insulator charge is not evenly distributed Con...

Page 17: ...closest to the charged body and a positive charge appears on the opposite surface Next pulling the charged body away returns the charge of the conductor to its original state When a positively charged body is brought close to a conductor grounding the conductor neutralizes the charge If the conductor is cut off from t h e g r o u n d a n d t h e n separated from the charged body the negative charg...

Page 18: ...l be positively charged and the other negatively charged In reality of course variations in temperature humidity surface shape etc may prevent the following series from appearing View this as a general example of what a series could look like Discharge Semiconductor example of device Ground Charged body Approaches Air Human hand Asbestos Glass Mica Nylon Lead Silk Aluminum Paper Cotton Steel Wood ...

Page 19: ...del HBM Machine Model MM and Charged Device Model CDM Model when the body s static charge is discharged to a device pin when touched Model when the static charge on a metallic device is discharged to a device pin when touched Model when static charge on a device conductor part chip wire lead frame etc is discharged when the device pin touches equipment or tools Causes example Wrist strap or conduc...

Page 20: ...issions 2 Ionizer Simultaneously remove dust and eliminate static charges using a relatively strong wind force Ionizer Air gun type blow type ion wiper etc Dust Charged product Ionizer Dust Static charges not eliminated Some dust cannot be removed with weak wind force Static charge elminated product Static charge elminated product Dust Removal Points 1 Blow dust off 2 Static charge elimination fro...

Page 21: ...the charge on the workpiece is large charged dust adheres to it Even non charged dust can become internally polarized and adhere to it When dust becomes charged electrostatic induction causes the dust to adhere to the product Since grounding alone will not change the situation the static charges must be removed from dust Static electricity removal using ionizers Grounding wrist straps conductive s...

Page 22: ...ge is locally generated between two conductors causing a breakdown in air insulation and generating blue violet light In a corona discharge ionizer high voltage is applied to the discharging needle to generate the corona discharge The corona discharge causes the air near the discharging needle to electrically break down generating ions Applying a positive high voltage to the discharging needle gen...

Page 23: ...Provides a good ion balance Generates fewer ions than DC method Poor ion balance at close distances Generates more ions than AC method Discharging needle Discharging needle Discharging needle AC method Generates positive and negative ions in alternating sequence from a single discharging needle DC method Generates ions from dedicated positive only or negative only discharging needle ...

Page 24: ...harge per microsurface area is excellent Ion conditions inside the tube Ion conditions inside the tube Strong attraction force fosters neutralization Weak attraction force avoids neutralization Tube interior Tube interior φ6 φ6 In commercial frequency ionizers the frequency for generating ions is a low 50 60 Hz that results in a poor ion balance over short periods of time This causes ions within t...

Page 25: ... balance 0V 100V Static charge removing time 100V 1000V Note Note Static charge removing time Measures how close an object approaches 0V when it is continuously delivered with positive and negative ions A value closer to 0V represents an excellent ion balance In addition a poor ion balance means that the target object is susceptible to becoming charged Ion balance Note Measurement of static dharge...

Page 26: ...tes an average value the actual voltage fluctuation known as over voltage has an effect on the workpiece t t Long cycle for generation of positive and negative ions Short cycle for generation of positive and negative ions Large voltage fluctuation Situation on workpiece surface when ionizer is used Low frequency ionizer Apparent ion balance Small voltage fluctuation High frequency ionizer ...

Page 27: ...the ionizer be installed A As shown in Figure 1 when a charged plastic panel is placed on top of a grounded metal plate the charge on the plastic panel surface is apparently neutralized by the differing charge induced from the adjacent metal plate surface In addition the potential in the plastic panel becomes virtually equal to the ground surface The situation when the plastic panel is lifted away...

Page 28: ...inating charges of a small charged object The blow type can bring the nozzle closer to the charged object If the charged object is compact and the objective is pinpoint static charge removal charge elimination effects are better than for the fan type When eliminating charges of a large charged object When the targeted workpiece is large in size and the ionizer must be set at a certain distance awa...

Page 29: ...plication conditions Cleaning replacement and other maintenance is required for the ionizer discharging needle Repeated use of corona discharge can cause wear on the tip of the discharging needle after a long period of use Since discharging needle wear can cause deterioration of performance periodic maintenance is required While the operating life of the discharging needle depends on the material ...

Page 30: ...nduction charge in the detection electrode surface This induction charge is then calculated and displayed as the potential of the charged body A high speed tuning fork shutter is incorporated in the front of an actual detecting electrode An alternating current signal proportional to the charge is obtained depending on the amount of shutter opening and closing and that signal is used to measure the...

Page 31: ...100V Measured using Koganei measurement conditions The measuring instrument conforms to IEC61340 All Koganei brand products are in compliance with the RoHS directive There are no model changes required to achieve RoHS compliance Since the blow type performance is affected by the supplied compressed air the environment has little effect on it The fan type however is susceptible to the effects of th...

Page 32: ...pecially made for each model The connection part cone shaped part to the ionizer main body is made of aluminum alloy while the tips are made of stainless steel Abnormalities can occur in such cases as when the cap is loose when the nozzle comes into contact with a ground or when the discharging needle is exceptionally dirty When abnormal output is detected a red lamp lights up Since the mounting h...

Page 33: ...ay the measured potential so that the measured value will be easier to read This sets the maximum and minimum voltages and when a charge exceeding the range defined by these two values is detected outputs an alarm Input output response time refers to the time required in averaged data output mode for outputting measurement data equivalent to the actual charge amount Data output cycle refers to the...

Page 34: ...m the plastic surface of the body It is 10 pF The CC monitor checks the cleanliness level in clean booths etc using simple detection of particles to display the cleanliness level The particle counter is an instrument for measuring particles By contrast the CC monitor is an instrument for simple detection of particles It is not a substitute The counter is for periodic short term measurement while t...

Page 35: ...cable wiring is correct Check the tips of all of the discharging needles and clean the dirty tips or replace the damaged ones Check that the discharging needle discharging needle unit is firmly attached Check whether the discharging needle is dirty Check that the ground wire is firmly connected to the ground terminal on the main body Check that the ground wire is firmly connected to the ground Che...

Page 36: ...n vary depending on the timing of pressing the RESET button After an alarm occurs if RESET is pressed before the particle density falls below the setting value If the RESET button is pressed when the particle density is at the setting value or higher only the buzzer is cancelled All other alarm LEDs and external outputs are maintained The alarm LEDs and external outputs are cancelled when the part...

Page 37: ... package leads terminals become charged due to friction etc causing a break when the charge is discharged via the device terminal CPM charged package model A list of materials that produce a charge when rubbed together arranged in order depending on whether they have positive or negative charges In general rubbing induced electrification is larger for materials whose positional relationship is dis...

Page 38: ...perators and minimize the risk of damage due to static electricity as a condition for handling ESDS or equipment Electrostatic Attraction Attraction of particles to workpieces due to static electricity Electrostatic Discharge Sensitive Devices Stand alone devices integrated circuits or mounted parts with the possibility of damage due to encounters with electric fields or electrostatic discharge du...

Page 39: ...rations it even exists in the natural world at 0 005 ppm to 0 05 ppm depending on the environment The allowed ozone density in Japan s labor environment is an average of 0 1 ppm or less over an 8 hour period Japan Society for Occupational Health Refers to particles with extremely tiny diameters and generally to particles of 10 µm or less that rarely precipitate out when suspended in a gas Charging...

Page 40: ... attach their theoretical charge removal capacity is greatly affected by the potential of the charged object and they therefore cannot perform charge removal when the amount of charge is low approx 3 kV or less In ionizers such characteristics as static charge removing time static charge removing range ion balance etc The time required for reduction from a certain voltage down to a specified volta...

Page 41: ...40 MEMO ...

Page 42: ...rated capacity any improper use or application or any improper installation of the product or any substitution upon it with parts not furnished or approved by KOGANEI CORP shall void this warranty This warranty covers only such items supplied by KOGANEI CORP The products of other manufacturers are covered only by such warranties made by those original manufacturers even though such items may have ...