Emerson EZMotion User Manual page 114

Level ON Timer
With this type of timer, when the Input of the timer activates, the internal clock begins to count. When the Preset time is reached, the
output of the timer turns ON. If the Input of the timer turns OFF before the output turns ON, then the internal clock stops counting and
the output will not turn ON. The whole sequence begins again the next time the Input turns ON. This means that the Input must
remain ON for the duration of the Preset Time in order for the Output to turn ON.
The Level On Timer does not use the Reset, but rather, the Output will remain ON as long as the Input remains ON. When the Input
turns OFF, the Output will automatically turn OFF.
Figure 104:
Edge OFF Timer
With this type of timer, when the Input of the timer activates, the Output turns ON automatically. When the Input turns OFF, the
internal clock begins to count. Once the Preset time is reached, the Output of the timer turns OFF. As soon as the Input turns OFF, it
does not matter what happens to the state of the Input, the Output will turn OFF when the Preset time is reached. The Output will
remain OFF until the Reset is activated.
Note that if the Input is already ON when the Reset activates, the Output will not automatically activate at that point. The timer
controller must see a rising edge on the Input to activate the Output.
Figure 105:
Level OFF Timer
With this type of timer, when the Input of the timer activates, the Output turns ON automatically. When the Input turns OFF, the
internal clock begins to count. Once the Preset time is reached, the Output of the timer turns OFF. If the Input turns ON again before
the Preset time is reached, the clock resets to zero and waits again for the Input to turn OFF before starting the count.
102
Level ON Timer - Timing Diagram
Edge Off Timer - Timing Diagram
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EZMotion User/Programming Guide
Revision: A8