89
31.2 Recovery of interrupted cycle with programmable
gradient
Temperature
T i m e
Recovery phase
with programmable
gradient.
Parameter 23
To desable this function,
enter 0 (zero) on parameter 23
.
Recovery is active only for
positive or null steps .
To quit recovery function
manually press
or
.
At restart if process value (kiln
temperature) is lower than setpoint
value, ATR620 stops the cycle in
progress and executes a rising step
with the programmable gradient
entered on
to gain the
setpoint which had been reached
before power failure. Cycle restarts
from this point.
During recovery stage, led
is
flashing, chronometer is not counting
and display shows
instead
of step number.
31.3 Waiting function
Temperature
T i m e
Waiting
P-21
Max. gap
Stop and P-22
To desable this function enter
0 on
.
When the function Waiting
is active,
chronometer is not
counting and display 2 shows
instead of step number
This function is specifically useful to
control firing cycles on kilns
whenever the plant is unable to follow
the gradients programmed by the
operator.
If the gap process -setpoint is bigger
than the value entered on parameter
22, the controller will start next step
only after waiting for the time entered
on parameter 21 or when the gap is
lower than value of parameter 22
(see graph beside).
To quit the function manually,
press
