No. SS2-AVP772-0100 Azbil Corporation 3-3) System Configuration with Contact Output (Model AVP 780) Model AVP 780 has a function of transmitting ....contact output signal. This contact output will be sent out via .............. output regardless of the valve position whenever an abnormality in the self ....................(during serious failure) or PST is detected. With this system configuration, the contact output from the instrument is output to the host monitoring system. ..ystem configuration ...... the Model AVP 780. AI Control Valve BPCS AO DO 0-20 mA DC Power supply Emergency ..hut ..own ..ignal (Power Switch: ON/OFF) Contact Signal (Self diagnosis (................ / PST abnormality) 24 V DC Power Supply *1 HART Host Note: the external load resistance is the sum of the BPCS's input resistance and ............................................................... ....................................................................................Figure 16. System Configuration ...... Model AVP 780 Used as ESD Device 12