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OMRON Relay Models

Relays are devices making or breaking electric circuits by their output section driven by operational signal, which is triggered by electric input signal controlled by switching devices.

A relay is an electrical control device. It is an electrical appliance that causes a predetermined step change in the controlled quantity in the electrical output circuit when the change in the input quantity (excitation quantity) reaches the specified requirement. It has an interactive relationship between the control system (aka input loop) and the controlled system (aka output loop). Usually used in automated control circuits, it is actually an "automatic switch" that uses a small current to control the operation of a large current. Therefore, it plays the role of automatic adjustment, safety protection and conversion circuit in the circuit.

MY4NJ-DC24v, MY4N-J, MY4N-GS, DC24V, MY4NJ, 24VDC, MY2N-J, MY2N-GS, DC24V, MY2NJ, 24VDC, H3Y-2, H3Y-2-C, H3Y-4 , AC220V, MK2P-I, MK3P-I, G2R-2-SN, G2R-2-SND, G2R-2-SNDI, G2R-2-S, MY2NJ, LY3NJ, LY2NJ, K8DS-PH1, K8DS-PM2, K8AK-PM2, MY2N-GS, MY4N-GS, PYF08A, PYF14A, PTF08A, SSR, MY2, G2R, LY2, H3Y, LY2N, PTF14A, G7l

1. General Purpose Relays

OMRON provides General-purpose Relays, I/O Relays, Power Relays, Latching Relays, and Ratchet Relays. A wide range of products are available for the purpose of sequence control to direct load switching, which will suit for various applications depending on the control method or environment inside of a panel. Multi-pole Relays provide high capacity and high dielectric strength. The G7L and G7J can be used selectively according to the characteristics of a compressor, a heater, or a motor. Special Relay can be used for alternating operation of motor drives.

OMRON Relay Models

2. Safety Relays
Safety Relays are used to build safety circuits for equipment and facilities. Safety Relays have a forced guided mechanism that enables detecting contact welding. G7SA, Compact, Slim Relays Conforming to EN Standards. G7Z, multi-pole Power Relay for Contactor Current Range Capable of Carrying and Switching 40 A at 440 VAC.

3. Terminal Relays
OMRON's Terminal Relay Series contributes to saving space in control panels. They are ideal for output interfaces.
1) G6D-F4PU / G3DZ-F4PU, G6D-F4B / G3DZ-F4B. Model with Push-In Plus technology Added to Terminal Relays with Four-point Output Lineup.
• Realized 5 A rating by optimal designs for wide variety of applications (Push-In Plus technology).
• Push-In Plus terminal enables work reduction and requires no retightening.
• Short Bars (order separately) ensure easy common wiring and crossover wiring to adjacent terminal relays.
• Double wire method enables branch wiring (Push-In Plus technology)
• Each relay has independent coils and contacts for PLC output compatible (both NPN and PNP).
• Mechanical Relay models and power MOS FET relay models (for high frequency contact ratings) are available.
• LED operation indicator, diode for coil surge absorption, and tools for easy removal of relays are included as standard equipment.
• UL and CSA certification for standard models.
VDE certification for Screws terminal, TÜV certification for Push-In Plus terminal.
IP20 protection code for Push-In Plus models.
2) G6B-4[][]ND, Compact Terminal Relay with 4 Independent Outputs
• Equipped with four G6B Mini-relays that are compact, highly sensitive, and highly resistant to dielectric surges, and that can switch 5 amps of power.
• Sealed plastic construction used for relays.
• Easy wiring with separated input/output terminals.
• Special P6B Mounting Socket used to facilitate maintenance (except for high-reliability models).
• UL and CSA certification for standard models (except for high-reliability models). VDE certification for G6B-4BND/47BND/48BND for 12/24 VDC.
• DIN Track mounting, and screw mounting models are available.
• SSR-equipped G3S4 models are also available.
3) G3S4, Compact Terminal SSR with 4 Outputs
• Easy-to-use SSR block that combines four compact G3S SSRs, sockets, and heat sink in one unit.
• Easy wiring with separate I/O terminal construction.
• LED operation indicator.
• Special socket used for easy Relay replacement.
• Mounts either on DIN track or with screws.
• Electromagnetic relay-equipped G6B-4[][]ND models are also available.

OMRON Relay Models

4. I/O Relay Terminals

I/O Relay Terminals simplify connecting PLCs and other Controllers and help reduce wiring in control panels. Achieve wiring with one Connecting Cable. Terminals are available for both inputs and outputs.
1) G70V, Our Value Design Products Increase the Value of Your Control Panels. I/O Relay Terminals with 16 Points and Push-In Plus terminal blocks to Downsize Control Panels and Save Labor.
• I/O Relay Terminals with 16 points to mount G2RV Slim I/O Relays.
• Push-In Plus terminal blocks are used to save wiring work in comparison with traditional screw terminals. (Wiring time is reduced by 60%* in comparison with traditional screw terminals.)
• Work is reduced ever further with one-step cable connection to the PLC.
• Diode provided for coil surge absorption.
• Operation indicators for immediate recognition of I/O signal status.
• Accepts G3RV Slim I/O SSRs.
• Greatly reduce wiring work and maximize space efficiency with new models that provide internal connections between I/O terminals. (input models: 16 point/common, output models: 4 points/common)
• DIN Track or screw mounting.
2) G7TC, Single Cable Connection to PLC Means Space is Saved and Less Control Panel Wiring is Required.
• Compact size: 182 (W) ✕ 85 (D) ✕ 68 (H) mm (8-point Output Block width is 102 mm).
• Connects to the PLC through the connector, and requires only a snap-in operation.
• Surge suppressor circuit built-in.
• Immediate recognition of I/O signal status using LED operation indicators.
• G3TA I/O Solid-state relay can be mounted instead of G7T.
• Mounts easily on a DIN track.
• Approved by UL, CSA (except for G7TC-OC16-1).

OMRON Relay Models
3) I/O Terminal Socket, 16-point I/O Terminal Socket accepts Various Devices such as G2R Relays, Solid State Relays, and Timers for More System Flexibility.
• Connects to a PLC with a simple snap-in connector.
• The G70A-ZOC16-3 cab be combined with a DRT1-OD32ML I/O Terminal for DeviceNet connectivity or an SRT2-VOD16ML Connector Terminal for CompoBus/S connectivity.
• SPDT relays can be mounted.
• Conforms to VDE (VDE0106) and CE standards.
• Electric-shock preventive (finger-touch protection) terminal socket.
• DIN rail mountable.
• High-capacity (10 A) terminal socket.
• Excellent noise resistance characteristics.
• Built-in diodes for coil surge suppression.
4) G70D-SOC08, Space-saving and Labor-saving 8-point Output Block
• Relay terminal is just 68 × 80 × 44 mm (W × H × D, when mounted upright).
• Independent contacts and short bar allow easy common connections.
• The common can now be connected with a short bar in the G70D-SOC08.
• No tools are required to remove Relays, so Relay replacement is easier than ever.
• The attached terminal cover prevents shocks.
• Equipped with operation indicators.
• Built-in diodes absorb coil surge.
• Mount either to DIN rail or via screws.

5. Solid-state Relays
No-contact relays that semiconductor is utilized, which enables high-speed and high-frequency operation. OMRON provides Solid-state Relay for enormous range of applications. These Relays enable high-precision, high-frequency temperature control for reflow ovens, molding machines, and sintering ovens. Models are available with fault detection and cyclic control. OMRON Solid-state Contactors provide smooth starting and stopping functions to suppress sudden motor operation and thus reduce mechanical stress. They are ideal for conveyor belts and other applications requiring smooth movement. These Solid-state Relays have the same shape as OMRON's general relays such as MY, LY, MK, G2R and G7T, and are suitable for high-frequency switching, signal exchange with controllers, and other I/O applications.

6. Power Controllers
1) G3PW, High-precision Control with Easy Setup
• Precise heater burnout detection.
• Set value and present value monitoring with indicators.
• Phase control or optimum cycle control.
• RS-485 communications to set manipulated variables and monitor load current.
• Total run time monitoring.
• Output modes for phase control: proportional to phase angle, proportional to voltage, proportional to square voltage, and constant-current control.
• Application with various loads: constant load resistance, variable load resistance.
• UL, and IEC/EN (TÜV) certified.
2) G3ZA, Optimum Cycle Control for High-precision Control with Low Noise
• Smaller than a Normal Power Controller.
• Enables low-noise power control in combination with zero-cross SSRs. (See note.)
• One Controller can control up to 8 SSRs.
• RS-485 communications to set manipulated variables and heater burnout detection. The Smart FB Library for the G3ZA can also be used.
• CE Marking
Main Upgraded Functions
• Soft-start function added for lamp heaters.
• Three-phase optimum cycle control added for three-phase heaters.
• Combining with special CT for150-A current detection.
3) G32A-EA, Used in Combination with the G3PA to Enable High-precision Temperature Control
• Use cycle control to achieve power control with little noise.
• Used in combination with the G3PA to connect to single- and three-phase loads.
• Three types of input method available: Internal adjuster, external adjuster, or DC signals from 4 to 20 mA.
• Streamline design. Both DIN track mounting and screw mounting possible.
• Use linking terminals for close mounting of the G3PA.
• Built-in isolation transformer.
• Power supply range: 100 to 240 V.

OMRON Relay Models

7. Low Voltage Switching Gears
A wide range of products including Magnetic Contactors, Manual Motor Starters, Thermal relays and Auxiliary relays. Compatible with motor applications. Mirror contact mechanism (J7KC) supports safety applications.
1) J7KC Series, best Match for upto 2.2 kW (240 VAC) *, 5.5 kW (440 VAC) Motor and Primary Side switches * Based on JIS C 8201-4-1
Control Panels: The Heart of Manufacturing Sites.
Evolution in control panels results in large evolution in production facilities.
And if control panel design, control panel manufacturing processes, and human interaction with them are innovated, control panel manufacturing becomes simpler and takes a leap forward.
OMRON will continue to achieve a control panel evolution and process innovation through many undertakings starting with the shared Value Design for Panel *1 concept for the specifications of products used in control panels.
2) J7MC Series, MPCB system, protection from Overload, Phase failure and Short Circuit
Control Panels: The Heart of Manufacturing Sites.
Evolution in control panels results in large evolution in production facilities.
And if control panel design, control panel manufacturing processes, and human interaction with them are innovated, control panel manufacturing becomes simpler and takes a leap forward.
OMRON will continue to achieve a control panel evolution and process innovation through many undertakings starting with the shared Value Design for Panel *1 concept for the specifications of products used in control panels.
3) J7TC Series, motor Protection from Overload and Phase -loss by Combination with J7KC for up to 2.2 kW (240 VAC) *, 5.5 kW (440 VAC) * Based on JIS C 8201-4-1
Control Panels: The Heart of Manufacturing Sites.
Evolution in control panels results in large evolution in production facilities.
And if control panel design, control panel manufacturing processes, and human interaction with them are innovated, control panel manufacturing becomes simpler and takes a leap forward.
OMRON will continue to achieve a control panel evolution and process innovation through many undertakings starting with the shared Value Design for Panel *1 concept for the specifications of products used in control panels.
4) J7KCA Series, same shape as J7KC magnetic contactors Ideal for standardizing panel design
Control Panels: The Heart of Manufacturing Sites.
Evolution in control panels results in large evolution in production facilities.
And if control panel design, control panel manufacturing processes, and human interaction with them are innovated, control panel manufacturing becomes simpler and takes a leap forward.
OMRON will continue to achieve a control panel evolution and process innovation through many undertakings starting with the shared Value Design for Panel *1 concept for the specifications of products used in control panels.

Technical parameters of the main products of the relay:
①Rated working voltage: refers to the voltage required by the coil when the relay is working normally. Depending on the type of relay, it can be either AC voltage or DC voltage.
② DC resistance: refers to the DC resistance of the coil in the relay, which can be measured by a multimeter.
③ Pull-in current: refers to the minimum current that the relay can produce pull-in action. In normal use, the given current must be slightly larger than the pull-in current, so that the relay can work steadily. As for the working voltage added by the coil, generally it should not exceed 1.5 times of the rated working voltage, otherwise it will produce a larger current and burn the coil.
④Release current: refers to the maximum current of the relay to release action. When the current in the pull-in state of the relay is reduced to a certain degree, the relay will return to the unenergized release state, and the current at this time is much smaller than the pull-in current.
⑤ Contact switching voltage and current: refers to the voltage and current allowed by the relay. It determines the size of the voltage and current that the relay can control, and it cannot exceed this value when used, otherwise it will easily damage the contacts of the relay.

New relay:
The new relay refers to the electromagnetic relay developed to meet the new special requirements and the use under special environmental conditions. Its main features are small size, light weight, vibration resistance, shock resistance, and low load range Load to 5A, 28 V rated load, the product has reliability index (failure efficiency level) requirements, the product adopts resistance welding or laser welding sealing hermetically sealed structure, mainly used in signal transmission and weak current in electronic control equipment Power switching.
New electromagnetic relays include: non-magnetic holding relays and magnetic holding relays. The non-magnetic holding relay is a monostable relay. The relay coil's contact output state changes under the specified voltage excitation, but after the coil excitation is canceled, the contact output state returns to the initial state. The magnetic holding relay is a bistable relay, which is divided into a single coil structure and a double coil structure, and the coil excitation is an electric pulse method. For single-coil relays, the contact output state of the coil changes when the coil is under the specified voltage excitation amount. After the coil excitation is canceled, the contact can maintain the existing state. Reverse voltage excitation amount. For the double-coil structure relay, when the first coil is under the specified voltage excitation, the contact output state changes. After the coil excitation is canceled, the contact can maintain the existing state. To change the contact output state, the second The coil plus the specified voltage excitation amount.
Due to the special performance of the new relay, its detection methods and requirements are also different from those of conventional relays. The main testing contents include electrical parameter testing, electrical performance index testing, mechanical performance index testing and physical performance index testing.

Main function:
The relay is an automatic switching element with isolation function. It is widely used in remote control, telemetry, communication, automatic control, mechatronics, and power electronic equipment. It is one of the most important control elements.
The relay generally has a sensing mechanism (input part) that can reflect certain input variables (such as current, voltage, power, impedance, frequency, temperature, pressure, speed, light, etc.); The actuator (output part) controlled by "break"; between the input part and the output part of the relay, there is an intermediate mechanism (driving part) for coupling and isolating the input quantity, functional processing and driving the output part.
As a control element, in summary, the relay has the following functions:
1) Expanding the control range: For example, when the control signal of a multi-contact relay reaches a certain value, it can change, disconnect, and connect multiple circuits at the same time according to different forms of contact groups.
2) Amplification: For example, sensitive relays, intermediate relays, etc., can control very large power circuits with a very small control amount.
3) Comprehensive signal: For example, when multiple control signals are input to the multi-winding relay in the prescribed form, after a comparative synthesis, the predetermined control effect is achieved.
4) Automatic, remote control and monitoring: for example, the relay on the automatic device together with other electrical appliances can form a program control circuit to realize automatic operation.

OMRON Relay Models

Generally speaking, when there is no relay installed in the electromechanical control system, most of the cases use the contactor (symbol KM) as the electric actuator, so that some basic automatic control actions can be achieved. However, if such components are installed in an environment where a relatively complicated system control needs to be coordinated, it will appear to be very inadequate or even unable to achieve the actual use requirements.
To be precise, in most electromechanical control systems, it is often encountered that information needs to be judged and logically calculated according to different states of the system or changes in parameter values, and at the same time The result of logic operation is used to control electrical actuators such as contactors, so as to achieve the purpose of automatic control. So here we must choose to use electrical components that are capable of accurate judgment and calculation of various states and parameter values ​​of the system, and we can call this type of electrical component a relay
Substantially defined, the relay is a component that is used as a signal transmission, and it must be converted into its contact open and closed state according to a specific form of input signal. Generally speaking, the overall structure of the relay is composed of three important parts: the intermediate mechanism, the bearing mechanism and the actuator.

The role of the bearing mechanism is to accurately reflect the input of the relay itself, and at the same time, it is transmitted to the intermediate mechanism and the amount set in advance (that is, the setting value) to make the two values ​​compare with each other. In this process If it is detected that the set value is reached (excessive or insufficient), the intermediate mechanism will prompt the actuator to act, closing and opening its contacts to achieve a certain control purpose.

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