Filter
Top Products
158 UDC 3300 Controller Product Manual 4/00
Selecting manual or
automatic mode
An alternate action switch places the controller in the Automatic or
Manual mode of operation. Switching between manual and automatic will
be bumpless, except when PD+MR algorithm is selected.
Table 5-9 includes procedures for selecting automatic or manual mode
and changing the output while in manual.
Table 5-9 Procedure for Selecting Automatic or Manual Mode
Step Operation Press Action
1
Selecting
Automatic
Mode
MANUAL
AUTO
until “A” indicator is ON.
The controller regulates its output to
maintain the PV at the desired setpoint.
Upper Display
shows the PV value
Lower Display
shows SP and the
setpoint value
The deviation bargraph indicates the PV
deviation from the setpoint.
The annunciators indicate whichever setpoint
is in use:
SP Local Setpoint
2SP Second Local Setpoint
3SP Third Local Setpoint
RSP Remote Setpoint
CSP Computer Setpoint
2
Selecting
Manual Mode
MANUAL
AUTO
until “MAN” indicator is ON.
The controller holds its output at the last
value used during automatic operation and
stops adjusting the output for changes in
setpoint or process variable.
Upper Display
shows the PV value
Lower Display
shows OUT and the
output value in (%).
The deviation bargraph indicates the PV
deviation from the setpoint.
3
Adjust the
Output in
Manual Mode
or
to adjust the output value while in manual
mode.
Upper Display
shows the PV value
Lower Display
shows OUT and the
output value in %.
4
Return to
Automatic
Mode
MANUAL
AUTO
The “A” indicator will appear indicating
Automatic mode.