Timer Relays

Timer relays combine an electro-mechanical or solid-state relay with a control circuit that uses time as a trigger for the relay. These relays will open or close their contacts based on a user-specified time interval. Several modes of operation are possible with these relays, including:

• On-delay - after application of the input voltage and the user-defined time delay expires, the output is energized
• Off-delay - upon application of the input voltage, the output is energized. When the input voltage is removed and the user-defined time delay expires, the output is de-energized
• On-delay flasher - operates the same as the On Delay relay but with an oscillating output that switches on and off at a user-defined interval
• On-interval - upon application of input voltage, the output is energized and stays energized until the user-defined time delay expires
• Single shot - once the input voltage is applied, the relay waits for a trigger. Once triggered, the output is energized and stays energized until the user-defined time delay expires. This process will start again with any trigger received while the input voltage is present.
• Cyclic (repeat cycle) - when the input voltage is applied, a user-defined time delay begins. At the end of this delay, the output is energized for a second user-defined time interval. At the end of the second interval, the output is de-energized and the sequence repeats until input voltage is removed.

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