ABB AnalyzeIT AX460 User Manual page 10

...2 OPERATION
...2.2 Operating Page
2.2.2 Dual (Bi-directional) PI Controller
Note. The Dual (Bi-directional) PI Controller operating page replaces the Single Input pH operating page shown in Section 2.3.1
of the User Guide, IM/AX4PH.
7. 0 0
pH
24. 6
Deg.C
Hi 8.00 Lo 6.00
7. 0 0
pH
----
Manual
Control Mode
7. 0 0
pH
60. 0
% Man
Hi 8.00 Lo 6.00
7. 0 0
pH
8. 0 0
pH
High Setpoint
7. 0 0
pH
6. 0 0
pH
Low Setpoint
8
Measured Values
pH.
Temperature.
High and low control set points.
Control Mode
Measured pH.
Control mode.
Use the and keys to switch between manual (
Control Output
Measured pH.
Control output (%), manual (
When is set to
Control Mode
control output between –100 and 100%.
High Control Set Point
Measured pH.
High control set point.
Use the and keys to adjust the high control set point between 0.5 and 14pH.
Low Control Set Point
Measured pH.
Low control set point.
Use the and keys to adjust the low control set point between 0 and 13.5pH.
Note. The minimum span between low and high control set points is 0.5pH.
Continued on next page.
Millivolts
Manual
) or automatic ( ).
Man Auto
(see above), use the
Manual
) and automatic ( ) control.
Auto
and keys to adjust the