ABB AWT420 - Digital I;O, Relays and Analog Output Connections; Ph and Conductivity Connections; Ph;Orp;Pion Sensor Module Connections

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AWT420 | UNIVERSAL 4-WIRE, DUAL-INPUT TRANSMITTER | OI/AWT420-EN REV. B
…5 Electrical installation
Digital I/O, relays and analog output
connections
Figure 10 Digital I/O, relays and analog output connections
pH and conductivity connections
pH/ORP/pIon sensor module connections
NOTICE
ORP (Redox) and Antimony pH sensors do not feature
temperature compensation therefore do not have
temperature sensors or related wiring.
+
–
+
–
Relay and analog outputs
Relays (1 to 4)


Analog outputs (1 to 4)
500 Ω
max.
Digital output (open collector)
Load
Load
N/O
COM
N/C
Load




PSU