ABB AX410 User Manual page 46

Single and Dual Input Analyzers for Low Level Conductivity
AX410, AX411, AX413, AX416, AX418, AX450, AX455 & AX456
Output Type
set to
Time
10. 0
Secs
Cycle Time
PID Controller
Output Type
set to
Analog
4-20mA
0-20mA
----
0-10mA
Output Range
PID Controller
44
Time Proportioning Output
The Time Proportioning Output is interrelated to the retention time of the vessel and the
flow of the chemical reagent and is adjusted experimentally to ensure that the chemical
reagent is adequate to control the dosing under maximum loading. It is recommended
that the Time Proportioning Output is adjusted in Manual Mode set to 100% valve
output before setting up the PID parameters.
The time proportioning output value is calculated using the following equation:
control output x cycle time
on time =
Set the cycle time, between 1.0 and 300.0 seconds in 0.1 second increments - see
appendix B on page 78, Fig. B.4 Mode C.
Note. Changes to the cycle time do not take effect until the start of a new cycle.
Output = 0%
Output = 25%
Output = 50%
Output = 75%
Output = 100%
See Section 5.8.2.
Power Recovery
See Section 5.9.
CONFIG. SECURITY
Analog Output
Set the analog current output range.
See Section 5.8.2.
Power Recovery
See Section 5.9.
CONFIG. SECURITY
100
Permanently de-energized
Energized
2.5s
De-energized
Energized
5s
De-energized
Energized
De-energized
Permanently energized
5 PROGRAMMING
7.5s
5s
7.5s 2.5s
Cycle Time = 10s
IM/AX4CO Issue 11