![]() ![]() At the end of the time delay (t), the output is de-energized and remains in that condition for the time delay (t). Upon application of input voltage, the output is energized and the time delay (t) begins. At the end of the time delay (t), the output is de-energized and the sequence repeats until input voltage is removed. ![]() At the end of the time delay (t), the output is energized and remains in that condition for the time delay (t). Upon application of input voltage, the time delay (t) begins. At the end of the time delay (t), the output is de-energized and the time delay relay is ready to accept another trigger. During the time delay (t), the trigger is ignored. When the trigger is applied, the output is energized and the time delay (t) begins. Upon application of input voltage, the time delay relay is ready to accept a trigger. Any application of the trigger during the time delay will reset the time delay (t) and the output remains energized. At the end of the time delay (t), the output is de-energized. Upon removal of the trigger, the time delay (t) begins. When the trigger is applied, the output is energized. Input voltage must be removed to reset the time delay relay. Input voltage must be removed to reset the time delay relay & de-energize the output. At the end of the time delay (t), the output is energized. Please check the catalog pages or specification sheets of each multi-function product to confirm what functions are included. NOTE: Not all functions are available on any of our multi-function products. If you cannot find a product to fit your requirements or have any questions, Macromatic's Application Engineers offer technical information along with product selection and application assistance. A Timing Chart shows the relationship between Input Voltage, Trigger (if present) and Output. Note that the user must provide the voltage to power the load being switched by the output contacts of the time delay relay.īelow are both written and visual descriptions on how the common timing functions operate. Output (Load)-every time delay relay has an output (either mechanical relay or solid state) that will open & close to control the load.As noted above, this trigger can either be a control switch (dry contact switch) or a power trigger (voltage). Trigger Signal-on certain timing functions, a trigger is used to initiate the unit after input voltage has been applied. ![]() Depending on the function, input voltage will either initiate the unit or make it ready to initiate when a trigger is applied. Input Voltage-control voltage applied to the input terminals.To help understand, some definitions are important: Only products that have a "power trigger" should be used with voltage as the trigger. voltage (commonly known as a power trigger)ĬAUTION: any time delay relay that is designed to be initiated with a dry contact control switch trigger could be damaged if voltage is applied to the trigger switch terminals. ![]() a control switch (dry contact), i.e., limit switch, push button, float switch, etc.These trigger signals can be one of two designs: Typically, time delay relays are initiated or triggered by one of two methods: The difference between relays and time delay relays is when the output contacts open & close: on a control relay, it happens when voltage is applied and removed from the coil on time delay relays, the contacts can open or close before or after some time delay. Their purpose is to control an event based on time. Time delay relays are simply control relays with a time delay built in. When designing circuits using time delay relays, questions such as what initiates a time delay relay, does the timing start with the application or release of voltage, when is the output relay energized, etc., must be asked. Understanding the differences between all the functions available in time delay relays can sometimes be a daunting task. What is the difference between On Delay, Off Delay, Single Shot, Interval On and all these other time delay functions? Solution/Resolution: ![]()
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