Whether looking for a timer for sale in your business or to use in your project, you’ll need to choose from different types of timer relays. But that can be tricky depending on your application or market. Here, we’ll go over the 5 most common types of timer relays, so you can make a decision based on the specific needs.
Time Relay Definition
A time relay is a device, usually electromechanical, that opens or closes a circuit after a preset period. Timed relays can be used to delay the energizing of a circuit, delay the de-energizing of a circuit, and perform timing in either directions or a combination of both.
The time delay can be adjustable or fixed, depending on the needs of the application. The time delay is usually adjustable using a knob, dial, multi-position switch, or other means. This allows the user to change the time delay without having to replace the entire relay.
A time delay relay can also be used to repetitively energize and de-energize a circuit at preset intervals. These types of timer relays are often used in applications such as water sprinklers, where the circuit is powered for a set period, then left without power for a set period.
Because timing needs and other requirements are different, time relays are built in a variety of different types. Here’s a look at the most common types of timer relays, their best applications, and other important information.
Types of Timer Relays
Time delay relay manufacturers make the device in a variety of sizes, operation methods, and other design variations. Most of the time, the relays will differ in the mode of operation.
Time relay operation can be either on-delay or off-delay. As the name implies, an on-delay timer will turn on after a specific time delay, while an off-delay timer will turn off after a specific time delay.
There are other types of time relays as well, such as those that are multi-functional. Based on your application needs and other factors such as price and accuracy or switching action, you can choose from the following types of timer relays.
1. On Delay Timer Relay
The on-delay time delay relay is the most common type of time relay. As the name suggests, this type of relay will start the timing action when an input voltage is applied, and energize the output after the set timing.
In order to de-energize the output, this input voltage must be removed, after which the on time delay relay will reset.
On-delay time delay relays are used in applications where it is necessary to ensure that a certain process has taken place before starting another process.
For example, you may use an on-delay timer in a conveyor belt application to make sure that the belt is up to speed before starting the next process. Other common uses of these Types of Timer Relays are:
- As an indicator in a process control system
- To indicate that a device is turned on
- In traffic signals
Conclusion
There are many different types of timer relays that are available on the market today. Each type of relay has its own unique set of features and benefits. Choosing the right type of time delay relay for your application will, thus, depend on what you want to use the device for. That’s because each type of time delay timing relay is designed for a specific purpose.
- In sprinklers to cycle the times when
- Pump controls to cycle the pump and prevent it from overheating.
- In electrical equipment systems where it is necessary to turn the device on and off at specific intervals.
