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Relay Technical Information CONFIGURATION and CONSTRUCTION PROTECTIVE CONSTRUCTION 1

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Relay Technical Information CONFIGURATION and CONSTRUCTION PROTECTIVE CONSTRUCTION 1 Configuration and Construction Relay Technical Information CONFIGURATION AND CONSTRUCTION PROTECTIVE CONSTRUCTION 1. Dust Cover Type 2. Flux-Resistant Type cleaning fluid when cleaning. Harmful To protect from dust, these types are The relay is constructed so that flux will substances on the contacts are removed covered, for example, with a plastic case. not enter inside the relay during by gas purging before sealing with. We recommend hand soldering, because automatic soldering. However, cleaning is 4. Sealed capsule type these relays are not constructed to not possible. This type is hermetically sealed with prevent flux and cleaning fluid from 3. Sealed Type ceramic and metal plating. No harmful entering during automatic soldering. Construction is designed to prevent gas or humidity will ever reach the seeping of flux when soldering and contacts. This type cannot be washed. CONSTRUCTION AND CHARACTERISTICS Automatic Automatic Dust Harmful Gas Type Construction Characteristics Soldering Cleaning Resistance Resistance Most basic construction where the Dust Cover Type case and base (or body) are fitted Take care No Take care No together. Base Terminals are sealed or molded simultaneously. The joint between Yes No Take care No the case and base is higher than Base the surface of the PC board. Flux-Resistant Type Terminals, case, and base are Yes No Take care No filled with sealing resin. Sealing resin Sealed construction with terminals, Sealed Type case and base sealed shut with Yes Yes Yes Yes* sealing resin. Sealing resin Hermetically sealed construction Sealed capsule type by sealing the metal case and (EP and EV relays No No Yes Yes plate, and the terminal and ceramic only) Solder part, with solder. *Since the plastic breathes, please do not use in an atmosphere that contains silicone. OPERATIONAL FUNCTION 1. Single Side Stable Type 2. 1 Coil Latching Type 3. 2 Coil Latching Type Relay which turns on when the coil is Relay with latching construction that can Relay with latching construction energized and turns off when de- maintain the on or off state with a pulse composed of 2 coils: set coil and reset energized. input. With one coil, the relay is set or coil. The relay is set or reset by reset by applying signals of opposite alternately applying pulse signals of the polarities. same polarity. (Schematic example: DS relay) (Schematic example: DS relay) Schematic example: DS relay ds_x61_en_relay_technical_information_090712D 1 Configuration and Construction 4. Operation Indication Indicates the set and reset states either electrically or mechanically for easy maintenance. An LED type (HC relay with LED) is available. LED type, HC relay TERMINAL CONFIGURATION PC board through hole PC board self-clinching Type Plug-in terminal Quick connect terminal Screw terminal terminal terminal Typical relay Terminal configuration Typical relay GQ(AGQ), TX, DS relay TQ relay HJ, HN relay LE, LF, JM relay HE, EP relay type Note: A plug-in solder dual type (HG relay) is also available. MOUNTING METHOD Type Insertion mount Socket mount Terminal socket mount TM type TMP type Mounting configuration Terminal Socket socket Typical relay SP-, HC-, HJ-, HL-, JW-, TQ, DS, S relay NC, HC relay HC relay LE, LF relay type SFS-Relays Notes: • Sockets are available for certain PC board relays (S relay, ST relay). 2 ds_x61_en_relay_technical_information_090712D Definition of Relay Terminology DEFINITION OF RELAY TERMINOLOGY COIL (also referred to as primary or input) 1. Coil Designation Single side stable type 2 coil latching type 1 coil latching type Non-polarized Polarized 4-terminal 3-terminal + — + + — + or + or — — + — — — + A black coil represents the energized 4. Nominal Operating Power As the voltage on an unoperated relay is state. For latching relays, schematic The value of power used by the coil at increased, the value at or below which all diagrams generally show the coil in its nominal voltage. For DC coils expressed contacts must function (transfer). reset state. Therefore, the coil symbol is in watts; AC expressed as volt amperes. 7. Drop-Out Voltage also shown for the reset coil in its reset Nominal Power (W or VA) = Nominal (Release or Must Release Voltage) state. Voltage Nominal Current. As the voltage on an operated relay is 2. Nominal Coil Voltage 5. Coil Resistance decreased, the value at or above which (Rated Coil Voltage) This is the DC resistance of the coil in DC all contacts must revert to their A single value (or narrow range) of type relays for the temperature conditions unoperated position. listed in the catalog. (Note that for certain source voltage intended by design to be 8. Maximum Continuous Voltage applied to the coil or input. types of relays, the DC resistance may be for temperatures other than the The maximum voltage that can be 3. Nominal Operating Current standard 20C 68F.) applied continuously to the coil without The value of current flow in the coil when causing damage. Short duration spikes of 6. Pick-Up Voltage nominal voltage is impressed on the coil. a higher voltage may be tolerable, but (Pull-In Voltage or Must Operate Voltage) this should not be assumed without first checking with the manufacturer. CONTACTS (secondary or output) 1. Contact Forms switched by the contacts. This value is voltage can be obtained from this graph. Denotes the contact mechanism and the product of switching voltage x For example, if the switching voltage is number of contacts in the contact circuit. switching current, and will be lower than fixed in a certain application, the the maximum voltage and maximum maximum switching current can be 2. Contact Symbols current product. obtained from the intersection between the voltage on the axis and the maximum Form A contacts 5. Maximum Switching Voltage (normally open contacts) switching power. The maximum open circuit voltage which Form B contacts Maximum switching capacity (normally closed contacts) can safely be switched by the contacts. AC and DC voltage maximums will differ 1.000V Form C contacts in most cases. (changeover contacts) 6. Maximum Switching Current ❇Max. Form A contacts are also called N.O. 100V switching The maximum current which can safely power contacts or make contacts. be switched by the contacts. AC and DC DC voltage Form B contacts are also called N.C. current maximums may differ. contacts or break contacts. 7. Maximum Switching Power 10V Form C contacts are also called changeover contacts or transfer contacts. The upper limit of power which can be switched by the contacts. Care should be 10mV 3. MBB Contacts taken not to exceed this value. 10µA 10mA 1A DC current Abbreviation for make-before-break 8. Maximum Switching Capacity contacts. Contact mechanism where Example: Using TX relay at a switching Form A contacts (normally open This is listed in the data column for each type of relay as the maximum value of the voltage of 60V DC, the maximum contacts) close before Form B contacts switching current is 1A. open (normally closed contacts). contact capacity and is an interrelationship of the maximum (*Maximum switching capacity is given 4. Rated Switching Power switching power, maximum switching for a resistive load. Be sure to carefully The design value in watts (DC) or volt voltage, and maximum switching current. check the actual load before use.) amperes (AC) which can safely be The switching current and switching ds_x61_en_relay_technical_information_090712D 3 Definition of Relay Terminology 9. Minimum switching capability voltage-drop method as shown below. In general, for relays with a contact rating This value is a guideline as to the lowest The measuring currents are designated. of 1A or more, measure using the possible level at which it will be possible voltage-drop method at 1A 6V DC. for a low level load to allow switching. V 11. Maximum Carrying Current The level of reliability of this value The maximum current which after closing depends on switching frequency, ambient Measured contact or prior to opening, the contacts can conditions, change in the desired contact safely pass without being subject to resistance, and the absolute value. R A Power temperature rise in excess of their design Please use a relay with AgPd contacts if source (AC or DC) limit, or the design limit of other your needs analog low level loads, temperature sensitive components in the control, or a contact resistance of 100 A : :Ammeter V : Voltmeter R :Variable resistor relay (coil, springs, insulation, etc.). This m or less. Test Currents value is usually in excess of the We recommend that you verify with one Rated Contact Current or Test Current maximum switching current. of our sales offices regarding usage. Switching Current (A) (mA) Less than 0.01 1 12. Capacitance 10. Contact Resistance 0.01 or more and less than 0.1 10 This value is measured between the This value is the combined resistance of 0.1 or more and less than 1 100 terminals at 1kHz and 20C 68°F. the resistance when the contacts are 1 or more 1,000 touching each other, the resistance of the terminals and contact spring. The contact The resistance can be measured with resistance is measured using the reasonable accuracy on a YHP 4328A milliohmmeter. ELECTRICAL PERFORMANCE 1. Insulation Resistance is usually specified, indicating rise time, 5. Release Time (Reset Time) The resistance value between all peak value and fall time. The elapsed time from the initial removal mutually isolated conducting sections of of coil power until the reclosure of the 100 the relay, i.e. between coil and contacts, Form B (normally closed) contacts (last 90 across open contacts and between coil or contact with multi-pole). This time does contacts to any core or frame at ground not include any bounce time. Peak value potential. This value is usually expressed 50 6.
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