欧姆龙(OMRON) 通用继电器选型手册.pdf

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欧姆龙(OMRON) 通用继电器选型手册
CONTENTS Technical Information Standards。, 23 Selection guide Control Panel relays MY New model 49 MY 62 Y4H,.,,,,,,,,,,,,,,,,,,,,,, MYK 74 78 G2RS 91 MK-I/-S l01 GeT G2A G2A-434 127 G2AK.,,,,,,,,,,,,,,,,, 133 MM 139 MMK 154 Built-in Relays 166 G7L 175 G4F ·,··非D非 188 G4B 非,非 非非 192 Terminal Relays G6D-F4B/G3DZ-F4B D 196 G6B-4□□ND 202 Special Purpose relays G4Q 208 G9B 213 Safety relay GsA 219 Safety relay unit GOSA 225 Sockets Sockets .,,,,,,,,,,238 OmRon General-purpose Relays and Power Relays echnical Information Classification by Basic Operating and Housing Classification item Representative models Features General- The contacts of these Relays instanta purpose Relays neously turn ON when the coil is ener- gized,and turn OFF when the coil is deenergized. These Relays do not have ly special functions MY G2A G2Rs MK-I/-S Fully Sealed The Relay mechanism is encapsulated General Relays 1) in a plastic case. with the terminals and terminal block sealed by epoxy resin purpose Relays G2A4□ Power Relays These relays are intended to switch heavy loads G4F G4B G7L G7J Latching Relays The contacts of these Relays are mag netically or mechanically locked in either the energized or the deenergized posi tion until a reset signal is input. Single winding and double-Winding coils are available for applying set or reset pulse olas Special- MYK匚 G2AK purpase Relay Ratchet Relays The contacts of Ratchet Relays alter and Stepping nately turn ON and OFF, or sequentially Relays 3) operate, when a pulse signal is input The contacts of stepping relays shift ON or OFF sequentially with each input G4Q G9B 1 Fully Sealed Relays The Fully Sealed Relay is of a simple construction, in Relay is placed in a plastic case. The gaps between the case and Relay terminals, and between the terminals and terminal Terminal Sealed with (base), are sealed with epoxy resin epoxy resIn, 圈樣 (1)There is no problem if the Relay is used on a flat surface. How ever, as much as possible, use it in an atmospheric pressure of 1,013mb=20% Plastic case (2 The Fully Sealed Relay can be immersed for cleaning Note that the sealing of the case and the section filled with are degraded if solder flux adheres, or if heat is generated at the terminals. Due to its simple construction, the Fully sealed Relay is not suitable for applications in an environment or installation location that requires a particularly high level of sealing. For applications in an atmosphere containing flammable or explo sive gases, use the Hermetically Sealed Relay 2)Latching Relays Give sufficient consideration to the vibration and shock produced by other Relays when they close and releas These Latching Relays keep residual magnetism(MYK, G2AK, etc. A continuous flow of current is possible through the set and reset Avoid use in places where there are a lot of magnetic particles or coils. However, avoid applying voltage to the set coil and the reset coil at the same time. Avoid using in a magnetic field(of 70 oersted or greater) Avoid use under conditions where there are many surges in the General-purpose Relays and Power Relays Technical Information OmRon When a large number of Relays are mounted in a row, make sure Notes on circuⅰt that the minimum mounting intervals have been observed between the various types of Relays Circuit connecting two Circuit connecting set coil to the reset voltage be applied before use as a starting procedule that Relays are delivered in the reset condition, but we recommend reset coils in parallel reset coil (+) When a diode is connected in the circuit, external noise and surges S1S2 must be taken into account for the repetitive peak reverse voltage and the dc reverse voltage, and a diode with sufficient capacity used. Also, an average rectification current that is larger than the coil current should be used xcitation with self contacts may not be kept normally. Avoid use in circuits such as the ones shown in the diagrams below Circuit connecting two set Circuit connecting set coil of When DC specifications are used in circuits such as the following coils in parallel Latching relay in parallel +) the latching may be lost and so a diode should be connected (as with another Relay coil the part marked D in the circuit diagram) or the circuit should be sosA modified, or a Latching relay with built-in diode used s,23 Incorrect D2 1 XL Load Mechanical Latching Relay(Model MMK, etc.) XL: Latching Relay When installing more than one Latching Relay side by side, provide a Xb: NC contact of Relay sufficient distance between two adjacent relays for efficient heat radiation Provide a distance of about 20 mm in the vertical directio and about 15 mm in the horizontal direction A very slight gap is provided in the locking section of a Mechanical Latching Relay. Therefore. the resistances of this type of Relay to vibration and shock are slightly interior to standard Latching Relays Do not apply a voltage to the set and reset coils at the same time. If this happens, the Relay will be set 3Basic Operation of Ratchet Relays and Stepping relays Model Basic circuit Operation pattern Outline Double-winding Set input 9_. In these Relays, the input pulse of the set Latching Relays coil causes the operating condition to be Model MYK Reset inout maintained magnetically or mechanically, Model g2AK Model mKK Load A然 res side puts the Relay into the reset condi Model mmK Ali Load B w屡毯tlon Ratchet Relay Setting Resetting In these Relays, the input pulse of the set contact o contact Reset input 圈 coil causes the operating condition to be maintained mechanically, and similarly Load A Fmm_F the input pulse of the reset coil maintains Load B Esse the reset condition the set and reset con tacts are alternately switched oN and Load a规 OFF Load b Stepping Relays :+ In these Relays, the contacts shift ON or OFF sequentially with each coil input Load B落器 Load A Load B Load C [cad D Load c Load D Note: For details. consult OmroN Classification by Coil Ratings Except for a few models, two types of Relay coils are available: AC-operated and DC-operated AC 12V 48V 50V 100/110V110/120V200220V220/240V voltage DC 6V 12V 24V 48V 100/110V110/120V200/220V|220/240V General-purpose Relays and Power Relays Technical Information omRon Classification by the Built-in Noise Absorption Circuit Some Relays are provided with a built-in element which absorbs the counterelectromotive force generated when the coil is switched OFF. These Relays are ideal for interfacing CPUs, PCs, and microcomputers The release time of these Relays is longer than that of the General Relay, as shown in the diagram below Noise absorber Coil waveform Model Diode(for DC oper- With Model MY(breakdown voltage of diode: 1, 000V) MY LY G2A ation only) MKP MMP Standard type Built-in diode type OFR 140V To To digital 24 VD VDC memory memory current: 1 CR circuit( for Ac With Model MY MY LY operation onl Standard ty Built-in RC circuit type To digital G=0033F VAC nemory Classification by operation Indicator Some Relays are provided with an operation indicator that shows the operation state of the Relays, either by a lighting element, such as Indication method Remarks Model LED, neon lamp, or incandescent lamp, or by mechanical means. By Built-in indicator showing their exact states at a glance, these types of Relays greatly LED facilitate maintenance and troubleshooting →2 MY Neon lamp一( G2A. MKIOP Mechanical An indication plate MY(New model indicato moves according to MYK, G2A(K), the movement of the MKDOP armature MKK□口P General-purpose Relays and Power Relays Technical Information OmRon Classification by Contact Generally, contact ratings are given based on a resistive load and When the load is a dc power supply and the current is high, an inductive load(coso=0. 4 or L/R= 7 ms the form and material switching error may arise from the connection and shorting of the of the contact have also been listed to aid in your selection of an arcing contacts, because the expectation of parallel redundancy is optimum Relay taking into account the required service life along high with the load When the load is a dc power supply and the current is high, a When Relays are used at very small load levels, the error rate will switching error may arise from the connection and shorting of the differ greatly depending on the contact material and the contact arcing contacts. The MM Series of Arc Magnetic Blow-out Relays method, as shown in the chart below For example, the error rate of with built-in permanent magnets are available for such conditions bifurcated contacts is lower than that of single contacts, because the expectation of parallel redundancy is high Example: Model MM IXP Rated load 110 VDC, 7A(LR=O) 110 VDC, 6A(L/R=7 ms) Error Rate Vs load current Guld-plaled single contact o 0.01 bifurcated Load current (mA) General-purpose Relays and Power Relays Technical Information 5 OmROn Classification by Sealing OMRON Relays are divided into the following three types, by classifying their sealing Classification Open Relays Cased Relays Fully Sealed Relays Representative model MM MY G2A4□ Construction his Relay construction This Relay construction hese Relays are sealed in a resin case, or cover, so that does not protect the Relay suppresses the adverse ef- it is difficult for atmospheres containing corrosive gases from contact with or pene- fects of dust on the Relay to affect the Relay. tration by foreign objects. when it must be used in a dusty locati Operating atmosphere Normal atmosphere In an atmosphere containing organic gases such as ammonia or hydrogen sulfide On the control panel for machine tools which produce tities of dust and oil In terminal equipment installed at a location where many people move about, creating a dusty atmo In automatic vending machines and showcases installed outdoors When the Relay is soldered on a PCb board which is to be immersed for cleaning Classification by Terminal The following six types of terminals are available item Solder terminal Screw terminal Octal pin terminal Quick connect Wire-wrap Denotes pcB erminal terminal terminal Terminal form 订管-了 RepresentativeMY, MYK, LY, G2A,MM,G7L,G7J MK,MM,G4Q LY, G4F, G7L,Socket MY MYK LY MK Relay G2AK G4B. G7J PY PT. PL G2A.G2A434 G2AK. G7L. G7J Some quick-connect terminals can be used with Faston receptacles and positive-lock connectors Example: G4F, G4B, and G7L Classification by Mounting Style Select the mounting style best suited to your application from the following four Relay mounting styles Classification Socket mounting Screw mounting Bracket mounting PCB mounting Terminal form necting I风 bracke Back ng Socket TUU connect Representative MY, MK, G2RS, LY, MM, G2A, G4Q, G7L, MY, LY, G4F, G4B, G7LG7L, G7J MY LY G2A. G7L Relays G7S 6 General-purpose Relays and Power Relays Technical Information OmRon ■ Glossary Contacts Contact Symbol NO contact Nc contact SPDT contact Contact Form The contact mechanism of the relay Number of contact poles Double-break No Double-break no Make-before contact contact break contact The number of contact circuits Rated load t The rated load of the contact of the Relay, which determines the Wiper contac characteristic performance of the contact of the Relay, is expressed contacr y Latching Relay Ratchet Relay contact by the switching voltage and switching current Maximum Switching Voltage ♀s The switching voltage of the relay determines the characteristic per- rmance of the contact of the Relay. do not apply voltage that exceeds the maximum switching voltage of the Relay Make-before-break Contact A contact arrangement in which part of the switching section is Carry Current shared between both an No and an Nc contact. When the Relay The value of the current which can be continuously applied to the operates or releases, the contact that closes the circuit operates Relay contacts without opening or closing them, which also allows before the contact that opens the circuit releases. Thus both the con tacts are closed momentarily at the same time the Relay to stay within the permissible temperature rise limit Maximum Switching(Contact) Current Maximum Switching Power The maximum capacity value of the load which can be switched with a current which serves as a reference in determining the perfor mance of the Relay contacts. This value will never exceed the carry out causing problems of material break-down and/ar electrical over- current. When using a Relay, plan not to exceed this value load. When using a Relay, be careful not to exceed this value. For example, when switching voltage V, is known, max. switching current Contact Resistance I, can be obtained at the point of intersection on the characteristic curve"Maximum switching power"below. Conversely, max switching The total resistance of the conductor, which includes specific resistin voltage V, can be operated if I, is known ities. such as of the armature and terminal and the resistance of the contacts. This value is determined by measuring the voltage drop Max switching current ( across the contacts by the allowed test current shown in the table Maximum switching power [W(VA)] Switching voltage(V1) 0: voltmet For instance, if the switching voltage 40 V, the max. switching cur- 只: ariab| e resisto rent =2 A(see circled point on graph Terminal Terminal R Test Current Rated current or switched current (a) Test current (mA 0.01 or higher but less than 0.1 10 0. 1 or higher but less than 1 100 1 or higher 1.000 To measure the contact resistance. a milliohmmeter can be also used, though the accuracy drops slightl 4050100 500 Switching voltage(V) General-purpose Relays and Power Relays Technical Information OmROn Electrical Endurance Maximum Switching Power The electrical endurance of the Relay can be determined from the Electrical life"curve shown below, based on the rated switching cur rent (1)obtained above For instance, the electrical endurance for the max. switching current of 2 A is slightly over 300,000 operations(see circled point on graph Wmax. AMax 8 Permissible 1000 0 Failure rate The failure rate indicates the lower limit of the switching power of Relay. Such minute load levels are found in microelectronic circuits This value may vary, depending on operating frequency, operating Switching current (A) conditions, expected reliability level of the relay, etc. It is always rec- However, with a DC load, it may become difficult to break a circuit of ommended to double-check Relay suitability under actual load condi 48V or more, due to arcing. Determine suitability of the Relay in tions actual usage testing. Correlation between the contact ratings is as In this catalog, the failure rate of each Relay is indicated as a refer shown below ence value. It indicates error level at a reliability level of 60% (Yso) 60=0. 1 x 10 operation means that one error is presumed to occur er 10,000,000 operations at the reliability level of 60% Coil Single-stable Double-winding Single-winding latching With pole Without pole 4 terminals 3 terminals R R Coil Current(Applicable to AC-switching Type Only) A current which flows through the coil when the rated voltage is applied to the coil at a temperature of 23C. The tolerance is +15%,20%o unless therwise specified 8 General-purpose Relays and Power Relays Technical Information

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