Description
A single-function time relay is designed to perform a specific time-delayed operation. It provides a single timing function and is typically used for applications where a single time delay is needed. These relays are straightforward to use and offer a cost-effective solution for basic time-based control. A multifunction time relay, as the name suggests, offers multiple timing functions in a single device. This type of relay provides various timing modes or functions, allowing you to set different time delays for different purposes within a single relay unit. Multifunction relays are versatile and can be applied to a wider range of applications with varying timing requirements. Timing Functions in Time Relays:
On-Delay Delay On Make: The relay s output is delayed after the input signal is applied.
Off-Delay Delay On Break: The relay s output is delayed after the input signal is removed.
Interval/Differential: The relay operates when the input signal is applied and then resets when the input is removed, with a delay before resetting.
Recycler/Flasher: The relay cycles between on and off states at a set time interval.
One-Shot/Pulse Generator: The relay produces a single output pulse when the input signal is applied.
Cyclic Timer: The relay operates in a cyclic manner, cycling through on and off states with specific time delays. When selecting a time relay, consider the required time delay range, the number of timing functions needed, the accuracy of timing, voltage and current ratings, and compatibility with the control system.