Omron ZEN - 3-6 Using Timers (T) and Holding Timers (#)

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Using Timers (T) and Holding Timers (#) Section 3-6
3-6 Using Timers (T) and Holding Timers (#)
The ZEN has 16 built-in timers and 8 built-in holding timers.
Timer Usage and Operation
Timers The present value being timed will be reset when the timer switches from RUN
mode to STOP mode or the power is turned OFF.
There are five uses of the timer available, depending on the additional function
selection.
Holding timers The present value being timed is held even when the timer switches from RUN
mode to STOP mode or the power is turned OFF. The time will continue when
the trigger input turns ON again. The ON status of the timer bit is also held
when the timer times out.
Only ON-delay holding timers are supported.
X: ON delay timer
Turns ON after a set interval after the trigger
input has turned ON.
Basic Operation
Main Applications
Time lag operations
■: OFF delay timer
Stays ON while the trigger input is ON and turns
OFF after a set interval after the trigger input
has turned OFF.
Basic Operation
Main Applications
Useful for timing lighting and ventilating fans.
Reset input
Trigger input
Setting
Present
value
Timer bit
0
Trigger input
Time
Output
Reset input
Trigger input
Setting
Present
value
Timer bit
0
Trigger input
Time
Output
Z211-E1-03.book Page 74 Friday, November 21, 2008 10:38 AM