Pixsys ATR 621 series, User Manual

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24 ATR 621 - User manual
- Recovery will start only for holding steps or rising steps in heating regula-
tion or for falling steps in cooling regulation.
- To exit manually from recovery mode press o .
8.5
Waiting step end
This function has been conceived to control kilns working cycles, whenever
the kiln cannot follow gradients programmed by the user. If at step end the
diff erence between process and setpoint values is greater than the value on
parameter 37, controller starts with the next step only after waiting for the
time programmed on parameter 36

, or when this gap becomes lo-
wer than parameter 37

.
5FNQFSBUVS
Ft
5FNQFSBUVSB
5JNFt5FNQP
SETPOINT
Step 1 Step 2
Attesa fine step P-36
Attesa fine step P-36
Step end max. gap (P-37)
Differenza massima fine step (P-37)
Step 3
PROCESS
PROCESSO
- To exit manually from step end waiting function press .
- To disable this function fi x at 0 end step waiting time

.
- During end step waiting red display shows

.
8.6
Heating / Cooling PID
ATR621 is suitable also for applications requiring a combined heating-coo-
ling P.I.D. action.
Command output has to be confi gured as heating PID (

=

and

greater than 0), and one of alarms (

,

,

) has to be confi gured
as

. Command output must be connected to actuator responsible for
heating action, while alarm will control the cooling action.
Parameters to confi gure for heating PID are:

=

Command output action type (Heating)

: Proportional band heating

: Integral time Heating and cooling

: Derivative time Heating and cooling

: Cycle time Heating
Parameters to confi gure for cooling PID are (example: action associated to
alarm 1):