REGOLATORE CONTROLLER ATR121 ATR141 Manuale User ...

Fahrenheit
ATR141
30 ATR121
ATR141
31 ATR121
Baud rate of
serial
communication
Slave address 1-254
300 bit/s
9600 bit/s
19200 bit/s
38400 bit/s
ATR141
32 ATR121
ATR141
Delay serial
communication
0-100 Milliseconds
14 TUNING
Tuning operation allows the setting of optimal PID parameters in order to
assure good control action:
-Stable, “straight-line” control of temperature around setpoint, without
fluctuations;
-quick response to deviations from setpoint caused by external noises
Tuning involves calculating and setting of the following parameters:
• Proportional band (inertia of plant; expressed as °C for temperature)
• Integral time (determines the time taken by the controller to remove
steady-state error signals, Inertia of plant expresses as time value);
• Derivative time (reaction of controller to change of measured value,
usually ¼ of integral time)
Setpoint value cannot be modified during Autotuning.
15 MANUAL START OF TUNING
Select parameter as (manual start)
Press Display Do
19