Omega CNI8 User Manual
38
ACTION TYPE SUBMENU:
The error that results from the measurement of the Process Variable may be
positive or negative since it may be greater or smaller than the Setpoint. If a
positive error should cause the instrument output to increase (i.e. cooling), it would
be called Direct Acting. If a negative error should cause the output to increase
(i.e. heating), it would be called Reverse Acting.
positive or negative since it may be greater or smaller than the Setpoint. If a
positive error should cause the instrument output to increase (i.e. cooling), it would
be called Direct Acting. If a negative error should cause the output to increase
(i.e. heating), it would be called Reverse Acting.
Press
d
18) Display flashes
DRçT Direct or RVRS Reverse.
Press
b
19) Scroll through the available selections: “Direct” or “Reverse”.
Press
d
20) Display shows
STRD stored message momentarily and then
advances to
AUTo only, if it was changed, otherwise press a to
advance to
AUTo Auto PID Submenu (if PID Control Type was
selected).
If “ON/OFF” was selected in the Control Type, the display skips
to the Dead Band Submenu.
to the Dead Band Submenu.
AUTO PID SUBMENU:
Press
d
21) Display flashes
ENBL or DSBL.
Press
b
22) Scroll through the available selections: “Enable” or
“Disable”.
“Disable”.
Press
d
23) Display shows
STRD stored message momentarily and then
advances to
ANTL only, if it was changed, otherwise press a to
advance to
ANTL Anti Integral Submenu.
If “Enabled”, the controller can determine, by enabling Start PID, the
optimum values for the three adjustments — Proportional, Reset and
Rate corresponding to P, I, and D. These values may be changed once
the auto tuning is complete.
optimum values for the three adjustments — Proportional, Reset and
Rate corresponding to P, I, and D. These values may be changed once
the auto tuning is complete.
If “Disabled” is selected, the user will manually enter these three
adjustment values. If you want the instrument to do the auto PID and the
P , PI or PID, first select auto disable and enter 0000 for unwanted
parameter. i.e. for PI enter 0000 for the rate.
adjustment values. If you want the instrument to do the auto PID and the
P , PI or PID, first select auto disable and enter 0000 for unwanted
parameter. i.e. for PI enter 0000 for the rate.
ANTI INTEGRAL SUBMENU:
Press
d
24) Display flashes
ENBL or DSBL.
Press
b
25) Scroll through the available selections: “Enable” or “Disable”.
Press
d
26) Display shows
STRD stored message momentarily and then
advances to
STRT only, if it was changed, otherwise press a to
advance to
STRT to Start Auto Tune PID Submenu (If auto PID
was Enabled).
If Auto PID was disabled display advances to
PRoP
Proportional Band Submenu.