Dwyer 4C - Manual (Page 11)

Page 11
REGULATION MENU
Press the ENTER key while at the Home Display in order to access the
Regulation Menu. Pressing the INDEX key will cycle through the below
menu items. The parameter will be displayed in the top display, while its
value will be displayed in the bottom display. The UP and DOWN arrows
change the values of the parameters. The ENTER key must be pressed
after any changes.
Auto Tune. The controller will evaluate the process and
select the PID values to maintain good control. Only
available when the control mode is set to PID.
Start learning the process. After the process has been
earned the menu will revert to oFF.
Disables Auto Tune.
Proportional Band Setting.
Integral time (reset time).
Derivative time (rate time).
PD Offset Correction Setting. only available when control
mode is set to PID and integral time = 0. See Programming
and Operation of PID function for moving information.
Integral Deviation Offset Correction associated with
each PID Profile. (n = 0 to 4).
Heating Hysteresis (Differential) Setting. Sets the value for
the amount of difference between the turn off point (set
point) and the turn on point. Figure A shows the output
behavior for a heating (reverse acting) application. Only
available when control mode set to on/off control.
Cooling Hysteresis (Differential) Setting. Sets the value for
the amount of difference between the turn off point (set
point) and the turn on point. Figure A shows the output
behavior for a cooling (direct acting) application. Only
available when control mode set to on/off control.
AT
on
oFF
P
i
d
PdoF
ioFn
HtS
CtS