The range of time delay relays from Macromatic cover a wide range of options and functions. Time delay relays use a time interval that can be preset to control certain functions. The time interval delays the activation of an output circuit. On Macromatic relays, this interval can be as short as 0.05 seconds or as long as 10230 hours depending on the specific unit. They are available as plug-ins, 1/16 DIN or encapsulated versions. Time delay relays include both single or multi-function units, with each function determining how the time delay will affect operations.

What are time delay relays?

Macromatic time delay relays open or close circuit contacts in relation to a preset time interval. This differs from standard control relays which open or close a circuit depending on whether input voltage is present. Timed relays will start their timing function either when the input voltage is introduced, or by using a control signal (like a switch). At this point the time delay starts right away, or after an operation is performed, depending on the function. Most have adjustable time intervals, set within a certain range, along with LED indicators to let you know the status of the relay or timing function. Making changes is easier with an adjustable timing range, as there is less need to swap out relays.

There are many different functions used with Macromatic time delay relays, which are described in further detail here. Most can be categorized into functions that start with input voltage or functions that start with a control signal. Different functions are more ideally suited to different applications. Some of the most common functions include On Delay, Off Delay, Single Shot and Watchdog. As such, there are Macromatic relays that perform this single function. Whereas some multi-function units can have up to 16 different modes of operation. When determining which relay to choose, things such as what type of trigger you will have, how long you need the time delay to be, why the application needs a delay, what mounting style you need, and how long the circuit will be closed are all factors to consider.

Where are time delay relays used?

Time delay relays are used in applications that need more automated on/off operations or in circuits that are not energized constantly. They are more common than they seem, being used in many different areas. Some main examples include irrigation, HVAC, water management facilities, packaging equipment, and lighting systems. More specifically, an interval timing function, for example, can be used to turn irrigation systems on or off. Lights can be shut off after a certain amount of time to save on energy costs. A watchdog function can have computer system shut off and cool down, and after a timed delay, alert users to an error. Conveyor systems that have multiple components can turn them on or off in a timed order. A flasher function can be used for traffic lights, while an on-delay function can control crosswalk signals. These are but a few scenarios. There are many more examples of where a Macromatic time delay relay could be used.

When compared to manual operation of systems, using Macromatic time delay relays offers more flexibility and accuracy. They provide for more complex processes and greater safety when in use. Many standard units are available online, while custom options can be ordered by email or over the phone