Direct Acting Single Pid Control; Ouput Assignment - ABB AX410 User Manual

Single and Dual Input Analyzers for Low Level Conductivity
AX410, AX411, AX413, AX416, AX418, AX450, AX455 & AX456 Appendix B
B.1.2 Direct Acting Single PID Control
Direct acting control is used when the process conductivity is greater than the required output conductivity.
100%
Control
Output
Direct
Acting
0%
0% 50% 100%
Process Variable Range
Fig. B.3 Direct Acting Single PID Control
B.2 Ouput Assignment
The output signal is assignable to either relay 1 (Time or Pulse output type) or analog output 1 (Analog output type).
IM/AX4CO Issue 11 79