AWT420 | UNIVERSAL 4-WIRE, DUAL-INPUT TRANSMITTER | OI/AWT420-EN REV. B
45
Control
channels are configurable for reverse or direct-acting control. pH channels are configurable for
reverse-acting, direct-acting or dual (Acid/Base) control.
Control outputs are configurable for Analog, Time Proportioning or Pulse Frequency output.
Analog control outputs can be assigned to any of the available analog outputs. Time
proportioning control outputs can be assigned to any of the available relays or digital outputs
and pulse frequency control outputs can be assigned to any of the available relays or digital
outputs.
Menu
Comment Default
PID 1 (2)
Control Action Off
Control Mode Auto, Manual Auto
Reverse Control
Direct Control
If Control ActionReverse or Direct-Acting:
Setpoint Numeric value, limited to PV Range. PV range low
Control Type P
Proportional Band
Integral Action Time If Control TypeP+I or P+I+D:
•
Derivative
Action Time
If Control TypeP+I+D or P+D:
•
Manual Reset If Control Type P or P+D:
•
Output Type Analog, Time Proportioning, Pulse Frequency. Analog
Cycle Time If Output TypeTime Proportioning:
•
Pulse Frequency If Output TypePulse Frequency:
•
Acid Controller
Setpoint (SPA) PV range high
Control Type P, P+I. P
Proportional Band
Integral Action Time Enabled if Control TypeP+I:
•
Output Type Analog, Time Proportioning, Pulse Frequency. Analog
Cycle Time If Output TypeTime Proportioning:
•
Pulse Frequency If Output TypePulse Frequency:
•
Control
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