NOVUS AUTOMATION
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PROCESS CONTROL BEHAVIOR AT TIMING END
During T1 and T2 intervals, the process control acts as it has been configured. However, at the end of the T1 + T2 interval, you can set the controller
to disable process control (
RUN
>>
No
). In Cycle Timer (
CFG
>>
tm
), the parameter
T.RUN
allows you to determine the desired setting:
T.RUN
Timer Run
Allows you to define the behavior of the process control at the end of
T1 + T2
.
on
Temperature control continues to operate.
off
Disables control at the end of the timer (
RUN
=
No
).
T2 TIMER
T2 is the secondary timer. It always starts at the end of T1. It can also be linked to any output available in the controller. The linked output turns on
at the beginning of T2 and turns off at the end of T2.
The
T2
flag indicates the T2 timer condition (see
section):
•
T2 in progress = The T2 flag is flashing.
•
T2 not started or already ended = The T2 flag is off.
TIMING DIRECTION
The time counting of the 2 timers (T1 and T2) can occur in forward or backward mode. In the forward mode (
uP
), counting starts from 0 and goes up
to the programmed time interval value (T1, T2). In backward mode (
dn
), counting starts at the value of the set time interval and counts down to 0.
The timing direction is set in parameter
t.dir
:
T.dir
Timer Direction
T1
timing count direction.
up
Forward mode, starting at 0.
Dn
Backward mode.