Precision Digital PD540 - Manual (Page 31)

5.6 Auto-Tuning Group (G.AT)
The parameter to activate the auto-tuning function.
When AT is set to ON, auto-tu ning will begin (indicated by the MAN light blinking). This
parameter cannot be used if the controller is in STOP mode.
PV
PV
The auto-tuning feature is used to let the controller measure process characteristics and automatically set the most
appropriate values for the PID parameters. During the initial auto-tuning process, the control outputs will function
in an On/Off condition, and the controller will use the responses to calculate the needed PID values. During this
setup process, the MAN LED on the controller will blink.
Start the auto-tuning process a fter setting a desired set point. Auto-tuning will set the PID parameters for the PID
zone which the set point is in, based on the PID reference point (RP) entered.
Auto-Tuning (AT)
PID Control
ON OFF ON OFF ON Control Output
SP
RP
RL
RH
Auto-Tuning On
(On/Off Operation, MAN LED Blinking)
2.PID
1.PID
Fig 9: Auto-Tuning
AT group selection does not appear if operating in On/Off mode or when set for manual output control.
Press SET/ENT key to select AT group. (Refer to parameter map in section 3.)
?
NOTE
?
NOTE
G.AT G.SP G.PID PWD G.CTL G.IN
G.COM G.RET G.ALM G.OUT
PD540 Series Nova Digital Process and Temperature Controller Instruction Manual
31