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Notation
There are 16 timers available in AC and DC models of 250 lines. Timers can be
used as contact as well as coil. In Genie T stands for Timer and timer numbers
are represented from 1 to 16. Thus T8 represents the eighth timer. We refer the
value of the nth timer as Tn.
Timer used as Contact
. Normally open (Tn): In this type of contact TRUE value is valid.
. Normally closed. (tn): In this type of contact FALSE value is valid.
Timer used as Coil
. Trigger Input (TTn): In timer functions trigger is required to start timer
operation (Timer cycle).
. Reset Input (RTn): Reset input is used to reset the current Timer value to
zero. The Trigger contact is disabled and the block is ready for a new timer cycle.
Note: If Reset and trigger become true simultaneously then the relay is reset and
the timer does not run.
Timing
Genie allows different timing ranges.
S - Time value is specified in seconds
Maximum time is 999.9 S
Resolution:
100 ms
M: S - Time value is specified in minutes: seconds
Maximum time is 99.59 M
Resolution:
1s
H: M - Time value is specified in hours: minutes
Maximum time is 99.99 H
Resolution is
1min
Note: If Time value = 0 and Trigger is given then unpredictable operation may
take place, this condition is shown as Program Error during program entry.