GEYA Timer relay provides simple time-based control, with multiple modes and adjustable timing ranges, discrete outputs, and a mechanical or electronic display.
It is designed for industrial process control, machine control, and a variety of other uses.
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What is a Control Relay?
Control relay is indeed a fundamental electrical component that is used in many new electronic systems. In general, a control relay is a valve that is regulated by an electrical current. A control relay is an electrical instrument that releases or shuts a switch to enable electricity to pass via a conductor coil that is not directly in touch with the switch.
Control relays are electrical mechanisms that regulate the flow of electric current in circuitry. Control relays were created about as much as a century earlier, and today’s world of electronics relies on them to regulate the current flow, which operates so many of our electric and electronic gadgets. Control relays are electrical components found in motors, hydroelectric dams, power distribution systems, transistors, as well as other uses.
What is a Timer Relay?
A timer relay is an electrical control relay that has a delay time built in. Its goal is to use the time to regulate an occurrence. On coil power supply, de-energization, or perhaps both, the armature movement is delayed by a timer relay. Its purpose is to turn on or off a device, circuitry, or system.
The majority of electricians are familiar with the concept of a timer relay. In the energy industry, it is very famous and well-known equipment. Since 1968, Timer Relay has been renowned for its dependable designs that offer extended service lifetimes and minimal maintenance costs. Timer relays use a simple working concept that allows you to select from a variety of functions as well as time delay ranges to guarantee that you get the appropriate timer for your needs.
What is a Multifunctional Timer Relay?
A multipurpose or multifunctional time relay is a timepiece that can perform a variety of timing tasks. A multifunctional timer may be used to choose and apply several management functions. It’s ideal for a wide range of applications, from simple to complex controllers.
Difference between Timer Relay and Electromechanical Relay
The shifting of output connections distinguishes an electromechanical control relay from a timer relay. When electricity is added to or withdrawn from the coil, the terminals of an electromechanical relay change direction. A timer relay’s connections will change the position prior to as well as after the actual predetermined time interval.
The following is the functional mechanism of a timer relay:
- The timer relay is first given a voltage source.
- The microcontroller then begins to boot up.
- The Microcontroller then receives the information from the connection in the following phase. On the front surface of the timer, the interface comprises many customization options. Rotating valves and potentiometers are used to establish the time function, completion time, and precise modification of the required delay time.
- The microcontroller reads the information from the control signals, such as the control signal for beginning the delay, in the fourth stage. The Start impetus’ or ‘trigger’ is the data that the timer needs to start the action.
- The timeframe is now set to run.
- The output relay energizes/de-energizes whenever the set time delay is finished.
- The power flow supplies the connected device, such as a contactor, once the output relay is turned on.
Functions of Timer Relays
There are different types of timer relays or time delay relay. The most common are ON-delay timers as well as OFF-delay timers. Here is a detailed description of the functioning of time delay relays:
Once the input voltage (power) is provided, usually open on-delay clocks begin timing. At the conclusion of the delay, the output is powered. To de-energize the outputs as well as reset the time delay relay, the input voltage must be withdrawn.
Blower motors, also known as delay-on-operate timers, are frequently used to postpone the functioning of gas, electric, or oil heater for a set time period after it has been switched on. On-delay timers can also be used to spread the start timings of various compressors or motors operated by the main switch.
This reduces the amount of surge current in the power line. Burglar and intruder alarms, open-door alerts, power distribution scheduling; microwave ignitor controls, as well as fan controls are among the other uses.
Off-delay timers are typically referred to as delay on release, delay on break, post purge delay, release delay as well as delay on de-energization. Once the incoming power is supplied, off-delay timers are prepared to accept the activation. The trigger energises an outlet, but this must be withdrawn before the time delay can commence. At the conclusion of the time delay interval, an outlet is de-energized. The triggering will reset if it is used during the wait.
Off-delay timers have been used in air-conditioning units to keep the blower motor running after the cooling compressor has been turned off by the thermostat. They could also be used to power electrical equipment and motors for a certain amount of time, such as coin-operated dryers in commercial laundry facilities.
One Shot Timers
One shot timers are time delay relays or solid state timers that are also generally characterized as a single shot, one shot relay, latching relay, single pulse, latching off-delay, single-shot interval, as well as latching delay on de-energization.
When power is applied, the contacts change position quickly and stay in that position for the time delay provided. The contacts return to their regular location after the time delay. During and before timing, power must be applied. When the time delay is finished, and the control switch is released, the system is reset.
Bypass timing, pulse shaping, on interval, interval delay, and delay on energization with instantaneous transfer or some name to refer to interval timers.
When electricity is turned on, the time delay begins. The output is powered throughout the time delay and de-energizes at the conclusion, remaining de-energized unless power is disconnected.
Benefits and Drawbacks of Time Delay Relay
The absence of mechanical as well as working elements in a timer relay or time delay relay has become one of the device’s major benefits. Time delay relays are not vulnerable to mechanical degradation such as arc flash as well as pitting because no connections are opened or closed. As a consequence, timer relays could run for an infinite number of on/off revolutions without losing performance.
Sound is also lessened because there are no moving parts. In power cabinets with thousands of timer relays, the silent functioning of timer relays is extremely advantageous.
Timers also have substantially quicker reaction rates than their electromechanical predecessors due to a lack of mechanical systems. Instant-on-time relay gadgets are useful for fast-acting electrical gadgets because they can send on/off signals from the control system to the load circuit within just 20 microseconds.
Further to that, many timer relays use substantially lesser power to activate the control as well as load circuits than electromechanical valves. Most time delay relays, for instance, can trigger load connections with as little as just one milliamp within the control circuit and volts as minimal as 3 volts Direct – current in the control circuit.
- Timer relays have a few drawbacks that, depending on the requirements, might be deemed minor. Here are a few examples:
- When closed, there is more resistance and heat generation. Hence passive heatsinks or other cooling methods are usually necessary.
- When the circuit is open, the resistance is lower, and there is a risk of excessive current.
- Voltage/current characteristics that aren’t linear
- Attributed to the prevalence of diodes, the instantaneous reverse recovery time is longer.
- Changes in polarity may also affect some timer relays.
Real-life Application Examples of Time Delay Relay
Timer relays can be used in a variety of situations, including:
- Machinery: Single machines, the commencement of star-delta motor, industrial automation as well as procedures are all examples.
- Buildings: Lighting systems, automated gates, vehicle parking barricades, as well as roller shutters are all instances…
- Water Systems: Pumping management, as well as irrigation systems, are included.
- HVAC: Fans and centralised water systems are a part.
- Time delay relay is used in cyclic switching of machinery. The biweekly initiations of a fan to protect it from clogging, or the draining of pipelines to keep them clear, are examples of cyclic switching of machinery.
- Lighting control, such as the delayed shifting of many rows of lights in manufacturing plants or conservatories, is an example.
- The delayed switch-off of the conveyor system or the consecutive shut down of a plant are examples of time-controlled beginning as well as shut-down of industrial equipment.
- Alarm triggers in the event of a problem, for example, to allow the flashing of a bulb in industrial and moving stock uses.
- Commissioning a star-delta motor to mitigate interphase short-circuits, for instance, limit beginning voltage with a changeover delay.
- When you hit the button for a pedestrian, for example, the signal light switches with don’t walk to walk after a brief delay.
- Wash your car; whenever cash is deposited, for instance, the vehicle washes runs for five minutes.